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
  30
  31 #ifndef CONFIG_NO_CONFIG_BLOBS
  32 #if defined(IEEE8021X_EAPOL) || !defined(CONFIG_NO_WPA)
  33 static void wpa_supplicant_set_config_blob(void *ctx,
  34                                            struct wpa_config_blob *blob)
  35 {
  36         struct wpa_supplicant *wpa_s = ctx;
  37         wpa_config_set_blob(wpa_s->conf, blob);
  38         if (wpa_s->conf->update_config) {
  39                 int ret = wpa_config_write(wpa_s->confname, wpa_s->conf);
  40                 if (ret) {
  41                         wpa_printf(MSG_DEBUG, "Failed to update config after "
  42                                    "blob set");
  43                 }
  44         }
  45 }
  46
  47
  48 static const struct wpa_config_blob *
  49 wpa_supplicant_get_config_blob(void *ctx, const char *name)
  50 {
  51         struct wpa_supplicant *wpa_s = ctx;
  52         return wpa_config_get_blob(wpa_s->conf, name);
  53 }
  54 #endif /* defined(IEEE8021X_EAPOL) || !defined(CONFIG_NO_WPA) */
  55 #endif /* CONFIG_NO_CONFIG_BLOBS */
  56
  57
  58 #if defined(IEEE8021X_EAPOL) || !defined(CONFIG_NO_WPA)
  59 static u8 * wpa_alloc_eapol(const struct wpa_supplicant *wpa_s, u8 type,
  60                             const void *data, u16 data_len,
  61                             size_t *msg_len, void **data_pos)
  62 {
  63         struct ieee802_1x_hdr *hdr;
  64
  65         *msg_len = sizeof(*hdr) + data_len;
  66         hdr = os_malloc(*msg_len);
  67         if (hdr == NULL)
  68                 return NULL;
  69
  70         hdr->version = wpa_s->conf->eapol_version;
  71         hdr->type = type;
  72         hdr->length = host_to_be16(data_len);
  73
  74         if (data)
  75                 os_memcpy(hdr + 1, data, data_len);
  76         else
  77                 os_memset(hdr + 1, 0, data_len);
  78
  79         if (data_pos)
  80                 *data_pos = hdr + 1;
  81
  82         return (u8 *) hdr;
  83 }
  84
  85
  86 /**
  87  * wpa_ether_send - Send Ethernet frame
  88  * @wpa_s: Pointer to wpa_supplicant data
  89  * @dest: Destination MAC address
  90  * @proto: Ethertype in host byte order
  91  * @buf: Frame payload starting from IEEE 802.1X header
  92  * @len: Frame payload length
  93  * Returns: >=0 on success, <0 on failure
  94  */
  95 static int wpa_ether_send(struct wpa_supplicant *wpa_s, const u8 *dest,
  96                           u16 proto, const u8 *buf, size_t len)
  97 {
  98         if (wpa_s->l2) {
  99                 return l2_packet_send(wpa_s->l2, dest, proto, buf, len);
 100         }
 101
 102         return wpa_drv_send_eapol(wpa_s, dest, proto, buf, len);
 103 }
 104 #endif /* IEEE8021X_EAPOL || !CONFIG_NO_WPA */
 105
 106
 107 #ifdef IEEE8021X_EAPOL
 108
 109 /**
 110  * wpa_supplicant_eapol_send - Send IEEE 802.1X EAPOL packet to Authenticator
 111  * @ctx: Pointer to wpa_supplicant data (wpa_s)
 112  * @type: IEEE 802.1X packet type (IEEE802_1X_TYPE_*)
 113  * @buf: EAPOL payload (after IEEE 802.1X header)
 114  * @len: EAPOL payload length
 115  * Returns: >=0 on success, <0 on failure
 116  *
 117  * This function adds Ethernet and IEEE 802.1X header and sends the EAPOL frame
 118  * to the current Authenticator.
 119  */
 120 static int wpa_supplicant_eapol_send(void *ctx, int type, const u8 *buf,
 121                                      size_t len)
 122 {
 123         struct wpa_supplicant *wpa_s = ctx;
 124         u8 *msg, *dst, bssid[ETH_ALEN];
 125         size_t msglen;
 126         int res;
 127
 128         /* TODO: could add l2_packet_sendmsg that allows fragments to avoid
 129          * extra copy here */
 130
 131         if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) ||
 132             wpa_s->key_mgmt == WPA_KEY_MGMT_NONE) {
 133                 /* Current SSID is not using IEEE 802.1X/EAP, so drop possible
 134                  * EAPOL frames (mainly, EAPOL-Start) from EAPOL state
 135                  * machines. */
 136                 wpa_printf(MSG_DEBUG, "WPA: drop TX EAPOL in non-IEEE 802.1X "
 137                            "mode (type=%d len=%lu)", type,
 138                            (unsigned long) len);
 139                 return -1;
 140         }
 141
 142         if (pmksa_cache_get_current(wpa_s->wpa) &&
 143             type == IEEE802_1X_TYPE_EAPOL_START) {
 144                 /* Trying to use PMKSA caching - do not send EAPOL-Start frames
 145                  * since they will trigger full EAPOL authentication. */
 146                 wpa_printf(MSG_DEBUG, "RSN: PMKSA caching - do not send "
 147                            "EAPOL-Start");
 148                 return -1;
 149         }
 150
 151         if (is_zero_ether_addr(wpa_s->bssid)) {
 152                 wpa_printf(MSG_DEBUG, "BSSID not set when trying to send an "
 153                            "EAPOL frame");
 154                 if (wpa_drv_get_bssid(wpa_s, bssid) == 0 &&
 155                     !is_zero_ether_addr(bssid)) {
 156                         dst = bssid;
 157                         wpa_printf(MSG_DEBUG, "Using current BSSID " MACSTR
 158                                    " from the driver as the EAPOL destination",
 159                                    MAC2STR(dst));
 160                 } else {
 161                         dst = wpa_s->last_eapol_src;
 162                         wpa_printf(MSG_DEBUG, "Using the source address of the"
 163                                    " last received EAPOL frame " MACSTR " as "
 164                                    "the EAPOL destination",
 165                                    MAC2STR(dst));
 166                 }
 167         } else {
 168                 /* BSSID was already set (from (Re)Assoc event, so use it as
 169                  * the EAPOL destination. */
 170                 dst = wpa_s->bssid;
 171         }
 172
 173         msg = wpa_alloc_eapol(wpa_s, type, buf, len, &msglen, NULL);
 174         if (msg == NULL)
 175                 return -1;
 176
 177         wpa_printf(MSG_DEBUG, "TX EAPOL: dst=" MACSTR, MAC2STR(dst));
 178         wpa_hexdump(MSG_MSGDUMP, "TX EAPOL", msg, msglen);
 179         res = wpa_ether_send(wpa_s, dst, ETH_P_EAPOL, msg, msglen);
 180         os_free(msg);
 181         return res;
 182 }
 183
 184
 185 /**
 186  * wpa_eapol_set_wep_key - set WEP key for the driver
 187  * @ctx: Pointer to wpa_supplicant data (wpa_s)
 188  * @unicast: 1 = individual unicast key, 0 = broadcast key
 189  * @keyidx: WEP key index (0..3)
 190  * @key: Pointer to key data
 191  * @keylen: Key length in bytes
 192  * Returns: 0 on success or < 0 on error.
 193  */
 194 static int wpa_eapol_set_wep_key(void *ctx, int unicast, int keyidx,
 195                                  const u8 *key, size_t keylen)
 196 {
 197         struct wpa_supplicant *wpa_s = ctx;
 198         if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
 199                 int cipher = (keylen == 5) ? WPA_CIPHER_WEP40 :
 200                         WPA_CIPHER_WEP104;
 201                 if (unicast)
 202                         wpa_s->pairwise_cipher = cipher;
 203                 else
 204                         wpa_s->group_cipher = cipher;
 205         }
 206         return wpa_drv_set_key(wpa_s, WPA_ALG_WEP,
 207                                unicast ? wpa_s->bssid : NULL,
 208                                keyidx, unicast, NULL, 0, key, keylen);
 209 }
 210
 211
 212 static void wpa_supplicant_aborted_cached(void *ctx)
 213 {
 214         struct wpa_supplicant *wpa_s = ctx;
 215         wpa_sm_aborted_cached(wpa_s->wpa);
 216 }
 217
 218
 219 static void wpa_supplicant_eapol_cb(struct eapol_sm *eapol, int success,
 220                                     void *ctx)
 221 {
 222         struct wpa_supplicant *wpa_s = ctx;
 223         int res, pmk_len;
 224         u8 pmk[PMK_LEN];
 225
 226         wpa_printf(MSG_DEBUG, "EAPOL authentication completed %ssuccessfully",
 227                    success ? "" : "un");
 228
 229         if (wpas_wps_eapol_cb(wpa_s) > 0)
 230                 return;
 231
 232         if (!success) {
 233                 /*
 234                  * Make sure we do not get stuck here waiting for long EAPOL
 235                  * timeout if the AP does not disconnect in case of
 236                  * authentication failure.
 237                  */
 238                 wpa_supplicant_req_auth_timeout(wpa_s, 2, 0);
 239         }
 240
 241         if (!success || !(wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE))
 242                 return;
 243
 244         if (!wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt))
 245                 return;
 246
 247         wpa_printf(MSG_DEBUG, "Configure PMK for driver-based RSN 4-way "
 248                    "handshake");
 249
 250         pmk_len = PMK_LEN;
 251         if (wpa_key_mgmt_ft(wpa_s->key_mgmt)) {
 252 #ifdef CONFIG_IEEE80211R
 253                 u8 buf[2 * PMK_LEN];
 254                 wpa_printf(MSG_DEBUG, "RSN: Use FT XXKey as PMK for "
 255                            "driver-based 4-way hs and FT");
 256                 res = eapol_sm_get_key(eapol, buf, 2 * PMK_LEN);
 257                 if (res == 0) {
 258                         os_memcpy(pmk, buf + PMK_LEN, PMK_LEN);
 259                         os_memset(buf, 0, sizeof(buf));
 260                 }
 261 #else /* CONFIG_IEEE80211R */
 262                 res = -1;
 263 #endif /* CONFIG_IEEE80211R */
 264         } else {
 265                 res = eapol_sm_get_key(eapol, pmk, PMK_LEN);
 266                 if (res) {
 267                         /*
 268                          * EAP-LEAP is an exception from other EAP methods: it
 269                          * uses only 16-byte PMK.
 270                          */
 271                         res = eapol_sm_get_key(eapol, pmk, 16);
 272                         pmk_len = 16;
 273                 }
 274         }
 275
 276         if (res) {
 277                 wpa_printf(MSG_DEBUG, "Failed to get PMK from EAPOL state "
 278                            "machines");
 279                 return;
 280         }
 281
 282         wpa_hexdump_key(MSG_DEBUG, "RSN: Configure PMK for driver-based 4-way "
 283                         "handshake", pmk, pmk_len);
 284
 285         if (wpa_drv_set_key(wpa_s, WPA_ALG_PMK, NULL, 0, 0, NULL, 0, pmk,
 286                             pmk_len)) {
 287                 wpa_printf(MSG_DEBUG, "Failed to set PMK to the driver");
 288         }
 289
 290         wpa_supplicant_cancel_scan(wpa_s);
 291         wpa_supplicant_cancel_auth_timeout(wpa_s);
 292         wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
 293
 294 }
 295
 296
 297 static void wpa_supplicant_notify_eapol_done(void *ctx)
 298 {
 299         struct wpa_supplicant *wpa_s = ctx;
 300         wpa_msg(wpa_s, MSG_DEBUG, "WPA: EAPOL processing complete");
 301         if (wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) {
 302                 wpa_supplicant_set_state(wpa_s, WPA_4WAY_HANDSHAKE);
 303         } else {
 304                 wpa_supplicant_cancel_auth_timeout(wpa_s);
 305                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
 306         }
 307 }
 308
 309 #endif /* IEEE8021X_EAPOL */
 310
 311
 312 #ifndef CONFIG_NO_WPA
 313
 314 static int wpa_get_beacon_ie(struct wpa_supplicant *wpa_s)
 315 {
 316         int ret = 0;
 317         struct wpa_bss *curr = NULL, *bss;
 318         struct wpa_ssid *ssid = wpa_s->current_ssid;
 319         const u8 *ie;
 320
 321         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
 322                 if (os_memcmp(bss->bssid, wpa_s->bssid, ETH_ALEN) != 0)
 323                         continue;
 324                 if (ssid == NULL ||
 325                     ((bss->ssid_len == ssid->ssid_len &&
 326                       os_memcmp(bss->ssid, ssid->ssid, ssid->ssid_len) == 0) ||
 327                      ssid->ssid_len == 0)) {
 328                         curr = bss;
 329                         break;
 330                 }
 331         }
 332
 333         if (curr) {
 334                 ie = wpa_bss_get_vendor_ie(curr, WPA_IE_VENDOR_TYPE);
 335                 if (wpa_sm_set_ap_wpa_ie(wpa_s->wpa, ie, ie ? 2 + ie[1] : 0))
 336                         ret = -1;
 337
 338                 ie = wpa_bss_get_ie(curr, WLAN_EID_RSN);
 339                 if (wpa_sm_set_ap_rsn_ie(wpa_s->wpa, ie, ie ? 2 + ie[1] : 0))
 340                         ret = -1;
 341         } else {
 342                 ret = -1;
 343         }
 344
 345         return ret;
 346 }
 347
 348
 349 static int wpa_supplicant_get_beacon_ie(void *ctx)
 350 {
 351         struct wpa_supplicant *wpa_s = ctx;
 352         if (wpa_get_beacon_ie(wpa_s) == 0) {
 353                 return 0;
 354         }
 355
 356         /* No WPA/RSN IE found in the cached scan results. Try to get updated
 357          * scan results from the driver. */
 358         if (wpa_supplicant_update_scan_results(wpa_s) < 0)
 359                 return -1;
 360
 361         return wpa_get_beacon_ie(wpa_s);
 362 }
 363
 364
 365 static u8 * _wpa_alloc_eapol(void *wpa_s, u8 type,
 366                              const void *data, u16 data_len,
 367                              size_t *msg_len, void **data_pos)
 368 {
 369         return wpa_alloc_eapol(wpa_s, type, data, data_len, msg_len, data_pos);
 370 }
 371
 372
 373 static int _wpa_ether_send(void *wpa_s, const u8 *dest, u16 proto,
 374                            const u8 *buf, size_t len)
 375 {
 376         return wpa_ether_send(wpa_s, dest, proto, buf, len);
 377 }
 378
 379
 380 static void _wpa_supplicant_cancel_auth_timeout(void *wpa_s)
 381 {
 382         wpa_supplicant_cancel_auth_timeout(wpa_s);
 383 }
 384
 385
 386 static void _wpa_supplicant_set_state(void *wpa_s, enum wpa_states state)
 387 {
 388         wpa_supplicant_set_state(wpa_s, state);
 389 }
 390
 391
 392 /**
 393  * wpa_supplicant_get_state - Get the connection state
 394  * @wpa_s: Pointer to wpa_supplicant data
 395  * Returns: The current connection state (WPA_*)
 396  */
 397 static enum wpa_states wpa_supplicant_get_state(struct wpa_supplicant *wpa_s)
 398 {
 399         return wpa_s->wpa_state;
 400 }
 401
 402
 403 static enum wpa_states _wpa_supplicant_get_state(void *wpa_s)
 404 {
 405         return wpa_supplicant_get_state(wpa_s);
 406 }
 407
 408
 409 static void _wpa_supplicant_deauthenticate(void *wpa_s, int reason_code)
 410 {
 411         wpa_supplicant_deauthenticate(wpa_s, reason_code);
 412         /* Schedule a scan to make sure we continue looking for networks */
 413         wpa_supplicant_req_scan(wpa_s, 5, 0);
 414 }
 415
 416
 417 static void * wpa_supplicant_get_network_ctx(void *wpa_s)
 418 {
 419         return wpa_supplicant_get_ssid(wpa_s);
 420 }
 421
 422
 423 static int wpa_supplicant_get_bssid(void *ctx, u8 *bssid)
 424 {
 425         struct wpa_supplicant *wpa_s = ctx;
 426         return wpa_drv_get_bssid(wpa_s, bssid);
 427 }
 428
 429
 430 static int wpa_supplicant_set_key(void *_wpa_s, enum wpa_alg alg,
 431                                   const u8 *addr, int key_idx, int set_tx,
 432                                   const u8 *seq, size_t seq_len,
 433                                   const u8 *key, size_t key_len)
 434 {
 435         struct wpa_supplicant *wpa_s = _wpa_s;
 436         if (alg == WPA_ALG_TKIP && key_idx == 0 && key_len == 32) {
 437                 /* Clear the MIC error counter when setting a new PTK. */
 438                 wpa_s->mic_errors_seen = 0;
 439         }
 440 #ifdef CONFIG_TESTING_GET_GTK
 441         if (key_idx > 0 && addr && is_broadcast_ether_addr(addr) &&
 442             alg != WPA_ALG_NONE && key_len <= sizeof(wpa_s->last_gtk)) {
 443                 os_memcpy(wpa_s->last_gtk, key, key_len);
 444                 wpa_s->last_gtk_len = key_len;
 445         }
 446 #endif /* CONFIG_TESTING_GET_GTK */
 447         return wpa_drv_set_key(wpa_s, alg, addr, key_idx, set_tx, seq, seq_len,
 448                                key, key_len);
 449 }
 450
 451
 452 static int wpa_supplicant_mlme_setprotection(void *wpa_s, const u8 *addr,
 453                                              int protection_type,
 454                                              int key_type)
 455 {
 456         return wpa_drv_mlme_setprotection(wpa_s, addr, protection_type,
 457                                           key_type);
 458 }
 459
 460
 461 static int wpa_supplicant_add_pmkid(void *wpa_s,
 462                                     const u8 *bssid, const u8 *pmkid)
 463 {
 464         return wpa_drv_add_pmkid(wpa_s, bssid, pmkid);
 465 }
 466
 467
 468 static int wpa_supplicant_remove_pmkid(void *wpa_s,
 469                                        const u8 *bssid, const u8 *pmkid)
 470 {
 471         return wpa_drv_remove_pmkid(wpa_s, bssid, pmkid);
 472 }
 473
 474
 475 #ifdef CONFIG_IEEE80211R
 476 static int wpa_supplicant_update_ft_ies(void *ctx, const u8 *md,
 477                                         const u8 *ies, size_t ies_len)
 478 {
 479         struct wpa_supplicant *wpa_s = ctx;
 480         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
 481                 return sme_update_ft_ies(wpa_s, md, ies, ies_len);
 482         return wpa_drv_update_ft_ies(wpa_s, md, ies, ies_len);
 483 }
 484
 485
 486 static int wpa_supplicant_send_ft_action(void *ctx, u8 action,
 487                                          const u8 *target_ap,
 488                                          const u8 *ies, size_t ies_len)
 489 {
 490         struct wpa_supplicant *wpa_s = ctx;
 491         return wpa_drv_send_ft_action(wpa_s, action, target_ap, ies, ies_len);
 492 }
 493
 494
 495 static int wpa_supplicant_mark_authenticated(void *ctx, const u8 *target_ap)
 496 {
 497         struct wpa_supplicant *wpa_s = ctx;
 498         struct wpa_driver_auth_params params;
 499         struct wpa_bss *bss;
 500
 501         bss = wpa_bss_get_bssid(wpa_s, target_ap);
 502         if (bss == NULL)
 503                 return -1;
 504
 505         os_memset(&params, 0, sizeof(params));
 506         params.bssid = target_ap;
 507         params.freq = bss->freq;
 508         params.ssid = bss->ssid;
 509         params.ssid_len = bss->ssid_len;
 510         params.auth_alg = WPA_AUTH_ALG_FT;
 511         params.local_state_change = 1;
 512         return wpa_drv_authenticate(wpa_s, &params);
 513 }
 514 #endif /* CONFIG_IEEE80211R */
 515
 516
 517 #ifdef CONFIG_TDLS
 518
 519 static int wpa_supplicant_tdls_get_capa(void *ctx, int *tdls_supported,
 520                                         int *tdls_ext_setup)
 521 {
 522         struct wpa_supplicant *wpa_s = ctx;
 523
 524         *tdls_supported = 0;
 525         *tdls_ext_setup = 0;
 526
 527         if (!wpa_s->drv_capa_known)
 528                 return -1;
 529
 530         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)
 531                 *tdls_supported = 1;
 532
 533         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_TDLS_EXTERNAL_SETUP)
 534                 *tdls_ext_setup = 1;
 535
 536         return 0;
 537 }
 538
 539
 540 static int wpa_supplicant_send_tdls_mgmt(void *ctx, const u8 *dst,
 541                                          u8 action_code, u8 dialog_token,
 542                                          u16 status_code, const u8 *buf,
 543                                          size_t len)
 544 {
 545         struct wpa_supplicant *wpa_s = ctx;
 546         return wpa_drv_send_tdls_mgmt(wpa_s, dst, action_code, dialog_token,
 547                                       status_code, buf, len);
 548 }
 549
 550
 551 static int wpa_supplicant_tdls_oper(void *ctx, int oper, const u8 *peer)
 552 {
 553         struct wpa_supplicant *wpa_s = ctx;
 554         return wpa_drv_tdls_oper(wpa_s, oper, peer);
 555 }
 556
 557
 558 static int wpa_supplicant_tdls_peer_addset(
 559         void *ctx, const u8 *peer, int add, u16 aid, u16 capability,
 560         const u8 *supp_rates, size_t supp_rates_len,
 561         const struct ieee80211_ht_capabilities *ht_capab,
 562         const struct ieee80211_vht_capabilities *vht_capab,
 563         u8 qosinfo, const u8 *ext_capab, size_t ext_capab_len)
 564 {
 565         struct wpa_supplicant *wpa_s = ctx;
 566         struct hostapd_sta_add_params params;
 567
 568         os_memset(&params, 0, sizeof(params));
 569
 570         params.addr = peer;
 571         params.aid = aid;
 572         params.capability = capability;
 573         params.flags = WPA_STA_TDLS_PEER | WPA_STA_AUTHORIZED;
 574
 575         /*
 576          * TDLS Setup frames do not contain WMM IEs, hence need to depend on
 577          * qosinfo to check if the peer is WMM capable.
 578          */
 579         if (qosinfo)
 580                 params.flags |= WPA_STA_WMM;
 581
 582         params.ht_capabilities = ht_capab;
 583         params.vht_capabilities = vht_capab;
 584         params.qosinfo = qosinfo;
 585         params.listen_interval = 0;
 586         params.supp_rates = supp_rates;
 587         params.supp_rates_len = supp_rates_len;
 588         params.set = !add;
 589         params.ext_capab = ext_capab;
 590         params.ext_capab_len = ext_capab_len;
 591
 592         return wpa_drv_sta_add(wpa_s, &params);
 593 }
 594
 595 #endif /* CONFIG_TDLS */
 596
 597 #endif /* CONFIG_NO_WPA */
 598
 599
 600 enum wpa_ctrl_req_type wpa_supplicant_ctrl_req_from_string(const char *field)
 601 {
 602         if (os_strcmp(field, "IDENTITY") == 0)
 603                 return WPA_CTRL_REQ_EAP_IDENTITY;
 604         else if (os_strcmp(field, "PASSWORD") == 0)
 605                 return WPA_CTRL_REQ_EAP_PASSWORD;
 606         else if (os_strcmp(field, "NEW_PASSWORD") == 0)
 607                 return WPA_CTRL_REQ_EAP_NEW_PASSWORD;
 608         else if (os_strcmp(field, "PIN") == 0)
 609                 return WPA_CTRL_REQ_EAP_PIN;
 610         else if (os_strcmp(field, "OTP") == 0)
 611                 return WPA_CTRL_REQ_EAP_OTP;
 612         else if (os_strcmp(field, "PASSPHRASE") == 0)
 613                 return WPA_CTRL_REQ_EAP_PASSPHRASE;
 614         return WPA_CTRL_REQ_UNKNOWN;
 615 }
 616
 617
 618 const char * wpa_supplicant_ctrl_req_to_string(enum wpa_ctrl_req_type field,
 619                                                const char *default_txt,
 620                                                const char **txt)
 621 {
 622         const char *ret = NULL;
 623
 624         *txt = default_txt;
 625
 626         switch (field) {
 627         case WPA_CTRL_REQ_EAP_IDENTITY:
 628                 *txt = "Identity";
 629                 ret = "IDENTITY";
 630                 break;
 631         case WPA_CTRL_REQ_EAP_PASSWORD:
 632                 *txt = "Password";
 633                 ret = "PASSWORD";
 634                 break;
 635         case WPA_CTRL_REQ_EAP_NEW_PASSWORD:
 636                 *txt = "New Password";
 637                 ret = "NEW_PASSWORD";
 638                 break;
 639         case WPA_CTRL_REQ_EAP_PIN:
 640                 *txt = "PIN";
 641                 ret = "PIN";
 642                 break;
 643         case WPA_CTRL_REQ_EAP_OTP:
 644                 ret = "OTP";
 645                 break;
 646         case WPA_CTRL_REQ_EAP_PASSPHRASE:
 647                 *txt = "Private key passphrase";
 648                 ret = "PASSPHRASE";
 649                 break;
 650         default:
 651                 break;
 652         }
 653
 654         /* txt needs to be something */
 655         if (*txt == NULL) {
 656                 wpa_printf(MSG_WARNING, "No message for request %d", field);
 657                 ret = NULL;
 658         }
 659
 660         return ret;
 661 }
 662
 663 #ifdef IEEE8021X_EAPOL
 664 #if defined(CONFIG_CTRL_IFACE) || !defined(CONFIG_NO_STDOUT_DEBUG)
 665 static void wpa_supplicant_eap_param_needed(void *ctx,
 666                                             enum wpa_ctrl_req_type field,
 667                                             const char *default_txt)
 668 {
 669         struct wpa_supplicant *wpa_s = ctx;
 670         struct wpa_ssid *ssid = wpa_s->current_ssid;
 671         const char *field_name, *txt = NULL;
 672         char *buf;
 673         size_t buflen;
 674         int len;
 675
 676         if (ssid == NULL)
 677                 return;
 678
 679         wpas_notify_network_request(wpa_s, ssid, field, default_txt);
 680
 681         field_name = wpa_supplicant_ctrl_req_to_string(field, default_txt,
 682                                                        &txt);
 683         if (field_name == NULL) {
 684                 wpa_printf(MSG_WARNING, "Unhandled EAP param %d needed",
 685                            field);
 686                 return;
 687         }
 688
 689         wpas_notify_eap_status(wpa_s, "eap parameter needed", field_name);
 690
 691         buflen = 100 + os_strlen(txt) + ssid->ssid_len;
 692         buf = os_malloc(buflen);
 693         if (buf == NULL)
 694                 return;
 695         len = os_snprintf(buf, buflen,
 696                           WPA_CTRL_REQ "%s-%d:%s needed for SSID ",
 697                           field_name, ssid->id, txt);
 698         if (len < 0 || (size_t) len >= buflen) {
 699                 os_free(buf);
 700                 return;
 701         }
 702         if (ssid->ssid && buflen > len + ssid->ssid_len) {
 703                 os_memcpy(buf + len, ssid->ssid, ssid->ssid_len);
 704                 len += ssid->ssid_len;
 705                 buf[len] = '\0';
 706         }
 707         buf[buflen - 1] = '\0';
 708         wpa_msg(wpa_s, MSG_INFO, "%s", buf);
 709         os_free(buf);
 710 }
 711 #else /* CONFIG_CTRL_IFACE || !CONFIG_NO_STDOUT_DEBUG */
 712 #define wpa_supplicant_eap_param_needed NULL
 713 #endif /* CONFIG_CTRL_IFACE || !CONFIG_NO_STDOUT_DEBUG */
 714
 715
 716 static void wpa_supplicant_port_cb(void *ctx, int authorized)
 717 {
 718         struct wpa_supplicant *wpa_s = ctx;
 719 #ifdef CONFIG_AP
 720         if (wpa_s->ap_iface) {
 721                 wpa_printf(MSG_DEBUG, "AP mode active - skip EAPOL Supplicant "
 722                            "port status: %s",
 723                            authorized ? "Authorized" : "Unauthorized");
 724                 return;
 725         }
 726 #endif /* CONFIG_AP */
 727         wpa_printf(MSG_DEBUG, "EAPOL: Supplicant port status: %s",
 728                    authorized ? "Authorized" : "Unauthorized");
 729         wpa_drv_set_supp_port(wpa_s, authorized);
 730 }
 731
 732
 733 static void wpa_supplicant_cert_cb(void *ctx, int depth, const char *subject,
 734                                    const char *cert_hash,
 735                                    const struct wpabuf *cert)
 736 {
 737         struct wpa_supplicant *wpa_s = ctx;
 738
 739         wpas_notify_certification(wpa_s, depth, subject, cert_hash, cert);
 740 }
 741
 742
 743 static void wpa_supplicant_status_cb(void *ctx, const char *status,
 744                                      const char *parameter)
 745 {
 746         struct wpa_supplicant *wpa_s = ctx;
 747
 748         wpas_notify_eap_status(wpa_s, status, parameter);
 749 }
 750
 751
 752 static void wpa_supplicant_set_anon_id(void *ctx, const u8 *id, size_t len)
 753 {
 754         struct wpa_supplicant *wpa_s = ctx;
 755         char *str;
 756         int res;
 757
 758         wpa_hexdump_ascii(MSG_DEBUG, "EAP method updated anonymous_identity",
 759                           id, len);
 760
 761         if (wpa_s->current_ssid == NULL)
 762                 return;
 763
 764         if (id == NULL) {
 765                 if (wpa_config_set(wpa_s->current_ssid, "anonymous_identity",
 766                                    "NULL", 0) < 0)
 767                         return;
 768         } else {
 769                 str = os_malloc(len * 2 + 1);
 770                 if (str == NULL)
 771                         return;
 772                 wpa_snprintf_hex(str, len * 2 + 1, id, len);
 773                 res = wpa_config_set(wpa_s->current_ssid, "anonymous_identity",
 774                                      str, 0);
 775                 os_free(str);
 776                 if (res < 0)
 777                         return;
 778         }
 779
 780         if (wpa_s->conf->update_config) {
 781                 res = wpa_config_write(wpa_s->confname, wpa_s->conf);
 782                 if (res) {
 783                         wpa_printf(MSG_DEBUG, "Failed to update config after "
 784                                    "anonymous_id update");
 785                 }
 786         }
 787 }
 788 #endif /* IEEE8021X_EAPOL */
 789
 790
 791 int wpa_supplicant_init_eapol(struct wpa_supplicant *wpa_s)
 792 {
 793 #ifdef IEEE8021X_EAPOL
 794         struct eapol_ctx *ctx;
 795         ctx = os_zalloc(sizeof(*ctx));
 796         if (ctx == NULL) {
 797                 wpa_printf(MSG_ERROR, "Failed to allocate EAPOL context.");
 798                 return -1;
 799         }
 800
 801         ctx->ctx = wpa_s;
 802         ctx->msg_ctx = wpa_s;
 803         ctx->eapol_send_ctx = wpa_s;
 804         ctx->preauth = 0;
 805         ctx->eapol_done_cb = wpa_supplicant_notify_eapol_done;
 806         ctx->eapol_send = wpa_supplicant_eapol_send;
 807         ctx->set_wep_key = wpa_eapol_set_wep_key;
 808 #ifndef CONFIG_NO_CONFIG_BLOBS
 809         ctx->set_config_blob = wpa_supplicant_set_config_blob;
 810         ctx->get_config_blob = wpa_supplicant_get_config_blob;
 811 #endif /* CONFIG_NO_CONFIG_BLOBS */
 812         ctx->aborted_cached = wpa_supplicant_aborted_cached;
 813         ctx->opensc_engine_path = wpa_s->conf->opensc_engine_path;
 814         ctx->pkcs11_engine_path = wpa_s->conf->pkcs11_engine_path;
 815         ctx->pkcs11_module_path = wpa_s->conf->pkcs11_module_path;
 816         ctx->wps = wpa_s->wps;
 817         ctx->eap_param_needed = wpa_supplicant_eap_param_needed;
 818         ctx->port_cb = wpa_supplicant_port_cb;
 819         ctx->cb = wpa_supplicant_eapol_cb;
 820         ctx->cert_cb = wpa_supplicant_cert_cb;
 821         ctx->status_cb = wpa_supplicant_status_cb;
 822         ctx->set_anon_id = wpa_supplicant_set_anon_id;
 823         ctx->cb_ctx = wpa_s;
 824         wpa_s->eapol = eapol_sm_init(ctx);
 825         if (wpa_s->eapol == NULL) {
 826                 os_free(ctx);
 827                 wpa_printf(MSG_ERROR, "Failed to initialize EAPOL state "
 828                            "machines.");
 829                 return -1;
 830         }
 831 #endif /* IEEE8021X_EAPOL */
 832
 833         return 0;
 834 }
 835
 836
 837 #ifndef CONFIG_NO_WPA
 838 static void wpa_supplicant_set_rekey_offload(void *ctx, const u8 *kek,
 839                                              const u8 *kck,
 840                                              const u8 *replay_ctr)
 841 {
 842         struct wpa_supplicant *wpa_s = ctx;
 843
 844         wpa_drv_set_rekey_info(wpa_s, kek, kck, replay_ctr);
 845 }
 846 #endif /* CONFIG_NO_WPA */
 847
 848
 849 int wpa_supplicant_init_wpa(struct wpa_supplicant *wpa_s)
 850 {
 851 #ifndef CONFIG_NO_WPA
 852         struct wpa_sm_ctx *ctx;
 853         ctx = os_zalloc(sizeof(*ctx));
 854         if (ctx == NULL) {
 855                 wpa_printf(MSG_ERROR, "Failed to allocate WPA context.");
 856                 return -1;
 857         }
 858
 859         ctx->ctx = wpa_s;
 860         ctx->msg_ctx = wpa_s;
 861         ctx->set_state = _wpa_supplicant_set_state;
 862         ctx->get_state = _wpa_supplicant_get_state;
 863         ctx->deauthenticate = _wpa_supplicant_deauthenticate;
 864         ctx->set_key = wpa_supplicant_set_key;
 865         ctx->get_network_ctx = wpa_supplicant_get_network_ctx;
 866         ctx->get_bssid = wpa_supplicant_get_bssid;
 867         ctx->ether_send = _wpa_ether_send;
 868         ctx->get_beacon_ie = wpa_supplicant_get_beacon_ie;
 869         ctx->alloc_eapol = _wpa_alloc_eapol;
 870         ctx->cancel_auth_timeout = _wpa_supplicant_cancel_auth_timeout;
 871         ctx->add_pmkid = wpa_supplicant_add_pmkid;
 872         ctx->remove_pmkid = wpa_supplicant_remove_pmkid;
 873 #ifndef CONFIG_NO_CONFIG_BLOBS
 874         ctx->set_config_blob = wpa_supplicant_set_config_blob;
 875         ctx->get_config_blob = wpa_supplicant_get_config_blob;
 876 #endif /* CONFIG_NO_CONFIG_BLOBS */
 877         ctx->mlme_setprotection = wpa_supplicant_mlme_setprotection;
 878 #ifdef CONFIG_IEEE80211R
 879         ctx->update_ft_ies = wpa_supplicant_update_ft_ies;
 880         ctx->send_ft_action = wpa_supplicant_send_ft_action;
 881         ctx->mark_authenticated = wpa_supplicant_mark_authenticated;
 882 #endif /* CONFIG_IEEE80211R */
 883 #ifdef CONFIG_TDLS
 884         ctx->tdls_get_capa = wpa_supplicant_tdls_get_capa;
 885         ctx->send_tdls_mgmt = wpa_supplicant_send_tdls_mgmt;
 886         ctx->tdls_oper = wpa_supplicant_tdls_oper;
 887         ctx->tdls_peer_addset = wpa_supplicant_tdls_peer_addset;
 888 #endif /* CONFIG_TDLS */
 889         ctx->set_rekey_offload = wpa_supplicant_set_rekey_offload;
 890
 891         wpa_s->wpa = wpa_sm_init(ctx);
 892         if (wpa_s->wpa == NULL) {
 893                 wpa_printf(MSG_ERROR, "Failed to initialize WPA state "
 894                            "machine");
 895                 return -1;
 896         }
 897 #endif /* CONFIG_NO_WPA */
 898
 899         return 0;
 900 }
 901
 902
 903 void wpa_supplicant_rsn_supp_set_config(struct wpa_supplicant *wpa_s,
 904                                         struct wpa_ssid *ssid)
 905 {
 906         struct rsn_supp_config conf;
 907         if (ssid) {
 908                 os_memset(&conf, 0, sizeof(conf));
 909                 conf.network_ctx = ssid;
 910                 conf.peerkey_enabled = ssid->peerkey;
 911                 conf.allowed_pairwise_cipher = ssid->pairwise_cipher;
 912 #ifdef IEEE8021X_EAPOL
 913                 conf.proactive_key_caching = ssid->proactive_key_caching < 0 ?
 914                         wpa_s->conf->okc : ssid->proactive_key_caching;
 915                 conf.eap_workaround = ssid->eap_workaround;
 916                 conf.eap_conf_ctx = &ssid->eap;
 917 #endif /* IEEE8021X_EAPOL */
 918                 conf.ssid = ssid->ssid;
 919                 conf.ssid_len = ssid->ssid_len;
 920                 conf.wpa_ptk_rekey = ssid->wpa_ptk_rekey;
 921         }
 922         wpa_sm_set_config(wpa_s->wpa, ssid ? &conf : NULL);
 923 }