wpa_supplicant/wps_supplicant.c

   1 /*
   2  * wpa_supplicant / WPS integration
   3  * Copyright (c) 2008-2014, 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 "eloop.h"
  13 #include "uuid.h"
  14 #include "crypto/random.h"
  15 #include "crypto/dh_group5.h"
  16 #include "common/ieee802_11_defs.h"
  17 #include "common/ieee802_11_common.h"
  18 #include "common/wpa_common.h"
  19 #include "common/wpa_ctrl.h"
  20 #include "eap_common/eap_wsc_common.h"
  21 #include "eap_peer/eap.h"
  22 #include "eapol_supp/eapol_supp_sm.h"
  23 #include "rsn_supp/wpa.h"
  24 #include "wps/wps_attr_parse.h"
  25 #include "config.h"
  26 #include "wpa_supplicant_i.h"
  27 #include "driver_i.h"
  28 #include "notify.h"
  29 #include "blacklist.h"
  30 #include "bss.h"
  31 #include "scan.h"
  32 #include "ap.h"
  33 #include "p2p/p2p.h"
  34 #include "p2p_supplicant.h"
  35 #include "wps_supplicant.h"
  36
  37
  38 #ifndef WPS_PIN_SCAN_IGNORE_SEL_REG
  39 #define WPS_PIN_SCAN_IGNORE_SEL_REG 3
  40 #endif /* WPS_PIN_SCAN_IGNORE_SEL_REG */
  41
  42 static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx);
  43 static void wpas_clear_wps(struct wpa_supplicant *wpa_s);
  44
  45
  46 static void wpas_wps_clear_ap_info(struct wpa_supplicant *wpa_s)
  47 {
  48         os_free(wpa_s->wps_ap);
  49         wpa_s->wps_ap = NULL;
  50         wpa_s->num_wps_ap = 0;
  51         wpa_s->wps_ap_iter = 0;
  52 }
  53
  54
  55 int wpas_wps_eapol_cb(struct wpa_supplicant *wpa_s)
  56 {
  57 #ifdef CONFIG_P2P
  58         if (wpas_p2p_wps_eapol_cb(wpa_s) > 0)
  59                 return 1;
  60 #endif /* CONFIG_P2P */
  61
  62         if (!wpa_s->wps_success &&
  63             wpa_s->current_ssid &&
  64             eap_is_wps_pin_enrollee(&wpa_s->current_ssid->eap)) {
  65                 const u8 *bssid = wpa_s->bssid;
  66                 if (is_zero_ether_addr(bssid))
  67                         bssid = wpa_s->pending_bssid;
  68
  69                 wpa_printf(MSG_DEBUG, "WPS: PIN registration with " MACSTR
  70                            " did not succeed - continue trying to find "
  71                            "suitable AP", MAC2STR(bssid));
  72                 wpa_blacklist_add(wpa_s, bssid);
  73
  74                 wpa_supplicant_deauthenticate(wpa_s,
  75                                               WLAN_REASON_DEAUTH_LEAVING);
  76                 wpa_s->reassociate = 1;
  77                 wpa_supplicant_req_scan(wpa_s,
  78                                         wpa_s->blacklist_cleared ? 5 : 0, 0);
  79                 wpa_s->blacklist_cleared = 0;
  80                 return 1;
  81         }
  82
  83         wpas_wps_clear_ap_info(wpa_s);
  84         eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
  85         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && !wpa_s->wps_success)
  86                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_FAIL);
  87
  88         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && wpa_s->current_ssid &&
  89             !(wpa_s->current_ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
  90                 int disabled = wpa_s->current_ssid->disabled;
  91                 unsigned int freq = wpa_s->assoc_freq;
  92                 struct wpa_bss *bss;
  93                 struct wpa_ssid *ssid = NULL;
  94                 int use_fast_assoc = 0;
  95
  96                 wpa_printf(MSG_DEBUG, "WPS: Network configuration replaced - "
  97                            "try to associate with the received credential "
  98                            "(freq=%u)", freq);
  99                 wpa_supplicant_deauthenticate(wpa_s,
 100                                               WLAN_REASON_DEAUTH_LEAVING);
 101                 if (disabled) {
 102                         wpa_printf(MSG_DEBUG, "WPS: Current network is "
 103                                    "disabled - wait for user to enable");
 104                         return 1;
 105                 }
 106                 wpa_s->after_wps = 5;
 107                 wpa_s->wps_freq = freq;
 108                 wpa_s->normal_scans = 0;
 109                 wpa_s->reassociate = 1;
 110
 111                 wpa_printf(MSG_DEBUG, "WPS: Checking whether fast association "
 112                            "without a new scan can be used");
 113                 bss = wpa_supplicant_pick_network(wpa_s, &ssid);
 114                 if (bss) {
 115                         struct wpabuf *wps;
 116                         struct wps_parse_attr attr;
 117
 118                         wps = wpa_bss_get_vendor_ie_multi(bss,
 119                                                           WPS_IE_VENDOR_TYPE);
 120                         if (wps && wps_parse_msg(wps, &attr) == 0 &&
 121                             attr.wps_state &&
 122                             *attr.wps_state == WPS_STATE_CONFIGURED)
 123                                 use_fast_assoc = 1;
 124                         wpabuf_free(wps);
 125                 }
 126
 127                 if (!use_fast_assoc ||
 128                     wpa_supplicant_fast_associate(wpa_s) != 1)
 129                         wpa_supplicant_req_scan(wpa_s, 0, 0);
 130                 return 1;
 131         }
 132
 133         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && wpa_s->current_ssid) {
 134                 wpa_printf(MSG_DEBUG, "WPS: Registration completed - waiting "
 135                            "for external credential processing");
 136                 wpas_clear_wps(wpa_s);
 137                 wpa_supplicant_deauthenticate(wpa_s,
 138                                               WLAN_REASON_DEAUTH_LEAVING);
 139                 return 1;
 140         }
 141
 142         return 0;
 143 }
 144
 145
 146 static void wpas_wps_security_workaround(struct wpa_supplicant *wpa_s,
 147                                          struct wpa_ssid *ssid,
 148                                          const struct wps_credential *cred)
 149 {
 150         struct wpa_driver_capa capa;
 151         struct wpa_bss *bss;
 152         const u8 *ie;
 153         struct wpa_ie_data adv;
 154         int wpa2 = 0, ccmp = 0;
 155
 156         /*
 157          * Many existing WPS APs do not know how to negotiate WPA2 or CCMP in
 158          * case they are configured for mixed mode operation (WPA+WPA2 and
 159          * TKIP+CCMP). Try to use scan results to figure out whether the AP
 160          * actually supports stronger security and select that if the client
 161          * has support for it, too.
 162          */
 163
 164         if (wpa_drv_get_capa(wpa_s, &capa))
 165                 return; /* Unknown what driver supports */
 166
 167         if (ssid->ssid == NULL)
 168                 return;
 169         bss = wpa_bss_get(wpa_s, cred->mac_addr, ssid->ssid, ssid->ssid_len);
 170         if (bss == NULL) {
 171                 wpa_printf(MSG_DEBUG, "WPS: The AP was not found from BSS "
 172                            "table - use credential as-is");
 173                 return;
 174         }
 175
 176         wpa_printf(MSG_DEBUG, "WPS: AP found from BSS table");
 177
 178         ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
 179         if (ie && wpa_parse_wpa_ie(ie, 2 + ie[1], &adv) == 0) {
 180                 wpa2 = 1;
 181                 if (adv.pairwise_cipher & WPA_CIPHER_CCMP)
 182                         ccmp = 1;
 183         } else {
 184                 ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 185                 if (ie && wpa_parse_wpa_ie(ie, 2 + ie[1], &adv) == 0 &&
 186                     adv.pairwise_cipher & WPA_CIPHER_CCMP)
 187                         ccmp = 1;
 188         }
 189
 190         if (ie == NULL && (ssid->proto & WPA_PROTO_WPA) &&
 191             (ssid->pairwise_cipher & WPA_CIPHER_TKIP)) {
 192                 /*
 193                  * TODO: This could be the initial AP configuration and the
 194                  * Beacon contents could change shortly. Should request a new
 195                  * scan and delay addition of the network until the updated
 196                  * scan results are available.
 197                  */
 198                 wpa_printf(MSG_DEBUG, "WPS: The AP did not yet advertise WPA "
 199                            "support - use credential as-is");
 200                 return;
 201         }
 202
 203         if (ccmp && !(ssid->pairwise_cipher & WPA_CIPHER_CCMP) &&
 204             (ssid->pairwise_cipher & WPA_CIPHER_TKIP) &&
 205             (capa.key_mgmt & WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK)) {
 206                 wpa_printf(MSG_DEBUG, "WPS: Add CCMP into the credential "
 207                            "based on scan results");
 208                 if (wpa_s->conf->ap_scan == 1)
 209                         ssid->pairwise_cipher |= WPA_CIPHER_CCMP;
 210                 else
 211                         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
 212         }
 213
 214         if (wpa2 && !(ssid->proto & WPA_PROTO_RSN) &&
 215             (ssid->proto & WPA_PROTO_WPA) &&
 216             (capa.enc & WPA_DRIVER_CAPA_ENC_CCMP)) {
 217                 wpa_printf(MSG_DEBUG, "WPS: Add WPA2 into the credential "
 218                            "based on scan results");
 219                 if (wpa_s->conf->ap_scan == 1)
 220                         ssid->proto |= WPA_PROTO_RSN;
 221                 else
 222                         ssid->proto = WPA_PROTO_RSN;
 223         }
 224 }
 225
 226
 227 static void wpas_wps_remove_dup_network(struct wpa_supplicant *wpa_s,
 228                                         struct wpa_ssid *new_ssid)
 229 {
 230         struct wpa_ssid *ssid, *next;
 231
 232         for (ssid = wpa_s->conf->ssid, next = ssid ? ssid->next : NULL; ssid;
 233              ssid = next, next = ssid ? ssid->next : NULL) {
 234                 /*
 235                  * new_ssid has already been added to the list in
 236                  * wpas_wps_add_network(), so skip it.
 237                  */
 238                 if (ssid == new_ssid)
 239                         continue;
 240
 241                 if (ssid->bssid_set || new_ssid->bssid_set) {
 242                         if (ssid->bssid_set != new_ssid->bssid_set)
 243                                 continue;
 244                         if (os_memcmp(ssid->bssid, new_ssid->bssid, ETH_ALEN) !=
 245                             0)
 246                                 continue;
 247                 }
 248
 249                 /* compare SSID */
 250                 if (ssid->ssid_len == 0 || ssid->ssid_len != new_ssid->ssid_len)
 251                         continue;
 252
 253                 if (ssid->ssid && new_ssid->ssid) {
 254                         if (os_memcmp(ssid->ssid, new_ssid->ssid,
 255                                       ssid->ssid_len) != 0)
 256                                 continue;
 257                 } else if (ssid->ssid || new_ssid->ssid)
 258                         continue;
 259
 260                 /* compare security parameters */
 261                 if (ssid->auth_alg != new_ssid->auth_alg ||
 262                     ssid->key_mgmt != new_ssid->key_mgmt ||
 263                     ssid->proto != new_ssid->proto ||
 264                     ssid->pairwise_cipher != new_ssid->pairwise_cipher ||
 265                     ssid->group_cipher != new_ssid->group_cipher)
 266                         continue;
 267
 268                 /* Remove the duplicated older network entry. */
 269                 wpa_printf(MSG_DEBUG, "Remove duplicate network %d", ssid->id);
 270                 wpas_notify_network_removed(wpa_s, ssid);
 271                 wpa_config_remove_network(wpa_s->conf, ssid->id);
 272         }
 273 }
 274
 275
 276 static int wpa_supplicant_wps_cred(void *ctx,
 277                                    const struct wps_credential *cred)
 278 {
 279         struct wpa_supplicant *wpa_s = ctx;
 280         struct wpa_ssid *ssid = wpa_s->current_ssid;
 281         u8 key_idx = 0;
 282         u16 auth_type;
 283 #ifdef CONFIG_WPS_REG_DISABLE_OPEN
 284         int registrar = 0;
 285 #endif /* CONFIG_WPS_REG_DISABLE_OPEN */
 286
 287         if ((wpa_s->conf->wps_cred_processing == 1 ||
 288              wpa_s->conf->wps_cred_processing == 2) && cred->cred_attr) {
 289                 size_t blen = cred->cred_attr_len * 2 + 1;
 290                 char *buf = os_malloc(blen);
 291                 if (buf) {
 292                         wpa_snprintf_hex(buf, blen,
 293                                          cred->cred_attr, cred->cred_attr_len);
 294                         wpa_msg(wpa_s, MSG_INFO, "%s%s",
 295                                 WPS_EVENT_CRED_RECEIVED, buf);
 296                         os_free(buf);
 297                 }
 298
 299                 wpas_notify_wps_credential(wpa_s, cred);
 300         } else
 301                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_CRED_RECEIVED);
 302
 303         wpa_hexdump_key(MSG_DEBUG, "WPS: Received Credential attribute",
 304                         cred->cred_attr, cred->cred_attr_len);
 305
 306         if (wpa_s->conf->wps_cred_processing == 1)
 307                 return 0;
 308
 309         wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID", cred->ssid, cred->ssid_len);
 310         wpa_printf(MSG_DEBUG, "WPS: Authentication Type 0x%x",
 311                    cred->auth_type);
 312         wpa_printf(MSG_DEBUG, "WPS: Encryption Type 0x%x", cred->encr_type);
 313         wpa_printf(MSG_DEBUG, "WPS: Network Key Index %d", cred->key_idx);
 314         wpa_hexdump_key(MSG_DEBUG, "WPS: Network Key",
 315                         cred->key, cred->key_len);
 316         wpa_printf(MSG_DEBUG, "WPS: MAC Address " MACSTR,
 317                    MAC2STR(cred->mac_addr));
 318
 319         auth_type = cred->auth_type;
 320         if (auth_type == (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) {
 321                 wpa_printf(MSG_DEBUG, "WPS: Workaround - convert mixed-mode "
 322                            "auth_type into WPA2PSK");
 323                 auth_type = WPS_AUTH_WPA2PSK;
 324         }
 325
 326         if (auth_type != WPS_AUTH_OPEN &&
 327             auth_type != WPS_AUTH_SHARED &&
 328             auth_type != WPS_AUTH_WPAPSK &&
 329             auth_type != WPS_AUTH_WPA2PSK) {
 330                 wpa_printf(MSG_DEBUG, "WPS: Ignored credentials for "
 331                            "unsupported authentication type 0x%x",
 332                            auth_type);
 333                 return 0;
 334         }
 335
 336         if (auth_type == WPS_AUTH_WPAPSK || auth_type == WPS_AUTH_WPA2PSK) {
 337                 if (cred->key_len < 8 || cred->key_len > 2 * PMK_LEN) {
 338                         wpa_printf(MSG_ERROR, "WPS: Reject PSK credential with "
 339                                    "invalid Network Key length %lu",
 340                                    (unsigned long) cred->key_len);
 341                         return -1;
 342                 }
 343         }
 344
 345         if (ssid && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
 346                 wpa_printf(MSG_DEBUG, "WPS: Replace WPS network block based "
 347                            "on the received credential");
 348 #ifdef CONFIG_WPS_REG_DISABLE_OPEN
 349                 if (ssid->eap.identity &&
 350                     ssid->eap.identity_len == WSC_ID_REGISTRAR_LEN &&
 351                     os_memcmp(ssid->eap.identity, WSC_ID_REGISTRAR,
 352                               WSC_ID_REGISTRAR_LEN) == 0)
 353                         registrar = 1;
 354 #endif /* CONFIG_WPS_REG_DISABLE_OPEN */
 355                 os_free(ssid->eap.identity);
 356                 ssid->eap.identity = NULL;
 357                 ssid->eap.identity_len = 0;
 358                 os_free(ssid->eap.phase1);
 359                 ssid->eap.phase1 = NULL;
 360                 os_free(ssid->eap.eap_methods);
 361                 ssid->eap.eap_methods = NULL;
 362                 if (!ssid->p2p_group) {
 363                         ssid->temporary = 0;
 364                         ssid->bssid_set = 0;
 365                 }
 366                 ssid->disabled_until.sec = 0;
 367                 ssid->disabled_until.usec = 0;
 368                 ssid->auth_failures = 0;
 369         } else {
 370                 wpa_printf(MSG_DEBUG, "WPS: Create a new network based on the "
 371                            "received credential");
 372                 ssid = wpa_config_add_network(wpa_s->conf);
 373                 if (ssid == NULL)
 374                         return -1;
 375                 wpas_notify_network_added(wpa_s, ssid);
 376         }
 377
 378         wpa_config_set_network_defaults(ssid);
 379
 380         os_free(ssid->ssid);
 381         ssid->ssid = os_malloc(cred->ssid_len);
 382         if (ssid->ssid) {
 383                 os_memcpy(ssid->ssid, cred->ssid, cred->ssid_len);
 384                 ssid->ssid_len = cred->ssid_len;
 385         }
 386
 387         switch (cred->encr_type) {
 388         case WPS_ENCR_NONE:
 389                 break;
 390         case WPS_ENCR_WEP:
 391                 if (cred->key_len <= 0)
 392                         break;
 393                 if (cred->key_len != 5 && cred->key_len != 13 &&
 394                     cred->key_len != 10 && cred->key_len != 26) {
 395                         wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key length "
 396                                    "%lu", (unsigned long) cred->key_len);
 397                         return -1;
 398                 }
 399                 if (cred->key_idx > NUM_WEP_KEYS) {
 400                         wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key index %d",
 401                                    cred->key_idx);
 402                         return -1;
 403                 }
 404                 if (cred->key_idx)
 405                         key_idx = cred->key_idx - 1;
 406                 if (cred->key_len == 10 || cred->key_len == 26) {
 407                         if (hexstr2bin((char *) cred->key,
 408                                        ssid->wep_key[key_idx],
 409                                        cred->key_len / 2) < 0) {
 410                                 wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key "
 411                                            "%d", key_idx);
 412                                 return -1;
 413                         }
 414                         ssid->wep_key_len[key_idx] = cred->key_len / 2;
 415                 } else {
 416                         os_memcpy(ssid->wep_key[key_idx], cred->key,
 417                                   cred->key_len);
 418                         ssid->wep_key_len[key_idx] = cred->key_len;
 419                 }
 420                 ssid->wep_tx_keyidx = key_idx;
 421                 break;
 422         case WPS_ENCR_TKIP:
 423                 ssid->pairwise_cipher = WPA_CIPHER_TKIP;
 424                 break;
 425         case WPS_ENCR_AES:
 426                 ssid->pairwise_cipher = WPA_CIPHER_CCMP;
 427                 break;
 428         }
 429
 430         switch (auth_type) {
 431         case WPS_AUTH_OPEN:
 432                 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 433                 ssid->key_mgmt = WPA_KEY_MGMT_NONE;
 434                 ssid->proto = 0;
 435 #ifdef CONFIG_WPS_REG_DISABLE_OPEN
 436                 if (registrar) {
 437                         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OPEN_NETWORK
 438                                 "id=%d - Credentials for an open "
 439                                 "network disabled by default - use "
 440                                 "'select_network %d' to enable",
 441                                 ssid->id, ssid->id);
 442                         ssid->disabled = 1;
 443                 }
 444 #endif /* CONFIG_WPS_REG_DISABLE_OPEN */
 445                 break;
 446         case WPS_AUTH_SHARED:
 447                 ssid->auth_alg = WPA_AUTH_ALG_SHARED;
 448                 ssid->key_mgmt = WPA_KEY_MGMT_NONE;
 449                 ssid->proto = 0;
 450                 break;
 451         case WPS_AUTH_WPAPSK:
 452                 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 453                 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
 454                 ssid->proto = WPA_PROTO_WPA;
 455                 break;
 456         case WPS_AUTH_WPA2PSK:
 457                 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 458                 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
 459                 ssid->proto = WPA_PROTO_RSN;
 460                 break;
 461         }
 462
 463         if (ssid->key_mgmt == WPA_KEY_MGMT_PSK) {
 464                 if (cred->key_len == 2 * PMK_LEN) {
 465                         if (hexstr2bin((const char *) cred->key, ssid->psk,
 466                                        PMK_LEN)) {
 467                                 wpa_printf(MSG_ERROR, "WPS: Invalid Network "
 468                                            "Key");
 469                                 return -1;
 470                         }
 471                         ssid->psk_set = 1;
 472                         ssid->export_keys = 1;
 473                 } else if (cred->key_len >= 8 && cred->key_len < 2 * PMK_LEN) {
 474                         os_free(ssid->passphrase);
 475                         ssid->passphrase = os_malloc(cred->key_len + 1);
 476                         if (ssid->passphrase == NULL)
 477                                 return -1;
 478                         os_memcpy(ssid->passphrase, cred->key, cred->key_len);
 479                         ssid->passphrase[cred->key_len] = '\0';
 480                         wpa_config_update_psk(ssid);
 481                         ssid->export_keys = 1;
 482                 } else {
 483                         wpa_printf(MSG_ERROR, "WPS: Invalid Network Key "
 484                                    "length %lu",
 485                                    (unsigned long) cred->key_len);
 486                         return -1;
 487                 }
 488         }
 489
 490         wpas_wps_security_workaround(wpa_s, ssid, cred);
 491
 492         if (cred->ap_channel)
 493                 wpa_s->wps_ap_channel = cred->ap_channel;
 494
 495         wpas_wps_remove_dup_network(wpa_s, ssid);
 496
 497 #ifndef CONFIG_NO_CONFIG_WRITE
 498         if (wpa_s->conf->update_config &&
 499             wpa_config_write(wpa_s->confname, wpa_s->conf)) {
 500                 wpa_printf(MSG_DEBUG, "WPS: Failed to update configuration");
 501                 return -1;
 502         }
 503 #endif /* CONFIG_NO_CONFIG_WRITE */
 504
 505         /*
 506          * Optimize the post-WPS scan based on the channel used during
 507          * the provisioning in case EAP-Failure is not received.
 508          */
 509         wpa_s->after_wps = 5;
 510         wpa_s->wps_freq = wpa_s->assoc_freq;
 511
 512         return 0;
 513 }
 514
 515
 516 #ifdef CONFIG_P2P
 517 static void wpas_wps_pbc_overlap_cb(void *eloop_ctx, void *timeout_ctx)
 518 {
 519         struct wpa_supplicant *wpa_s = eloop_ctx;
 520         wpas_p2p_notif_pbc_overlap(wpa_s);
 521 }
 522 #endif /* CONFIG_P2P */
 523
 524
 525 static void wpa_supplicant_wps_event_m2d(struct wpa_supplicant *wpa_s,
 526                                          struct wps_event_m2d *m2d)
 527 {
 528         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_M2D
 529                 "dev_password_id=%d config_error=%d",
 530                 m2d->dev_password_id, m2d->config_error);
 531         wpas_notify_wps_event_m2d(wpa_s, m2d);
 532 #ifdef CONFIG_P2P
 533         if (wpa_s->parent && wpa_s->parent != wpa_s) {
 534                 wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_M2D
 535                         "dev_password_id=%d config_error=%d",
 536                         m2d->dev_password_id, m2d->config_error);
 537         }
 538         if (m2d->config_error == WPS_CFG_MULTIPLE_PBC_DETECTED) {
 539                 /*
 540                  * Notify P2P from eloop timeout to avoid issues with the
 541                  * interface getting removed while processing a message.
 542                  */
 543                 eloop_register_timeout(0, 0, wpas_wps_pbc_overlap_cb, wpa_s,
 544                                        NULL);
 545         }
 546 #endif /* CONFIG_P2P */
 547 }
 548
 549
 550 static void wpas_wps_clear_timeout(void *eloop_ctx, void *timeout_ctx)
 551 {
 552         struct wpa_supplicant *wpa_s = eloop_ctx;
 553         wpa_printf(MSG_DEBUG, "WPS: Clear WPS network from timeout");
 554         wpas_clear_wps(wpa_s);
 555 }
 556
 557
 558 static void wpa_supplicant_wps_event_fail(struct wpa_supplicant *wpa_s,
 559                                           struct wps_event_fail *fail)
 560 {
 561         if (fail->error_indication > 0 &&
 562             fail->error_indication < NUM_WPS_EI_VALUES) {
 563                 wpa_msg(wpa_s, MSG_INFO,
 564                         WPS_EVENT_FAIL "msg=%d config_error=%d reason=%d (%s)",
 565                         fail->msg, fail->config_error, fail->error_indication,
 566                         wps_ei_str(fail->error_indication));
 567                 if (wpa_s->parent && wpa_s->parent != wpa_s)
 568                         wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_FAIL
 569                                 "msg=%d config_error=%d reason=%d (%s)",
 570                                 fail->msg, fail->config_error,
 571                                 fail->error_indication,
 572                                 wps_ei_str(fail->error_indication));
 573         } else {
 574                 wpa_msg(wpa_s, MSG_INFO,
 575                         WPS_EVENT_FAIL "msg=%d config_error=%d",
 576                         fail->msg, fail->config_error);
 577                 if (wpa_s->parent && wpa_s->parent != wpa_s)
 578                         wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_FAIL
 579                                 "msg=%d config_error=%d",
 580                                 fail->msg, fail->config_error);
 581         }
 582
 583         /*
 584          * Need to allow WPS processing to complete, e.g., by sending WSC_NACK.
 585          */
 586         wpa_printf(MSG_DEBUG, "WPS: Register timeout to clear WPS network");
 587         eloop_cancel_timeout(wpas_wps_clear_timeout, wpa_s, NULL);
 588         eloop_register_timeout(0, 100000, wpas_wps_clear_timeout, wpa_s, NULL);
 589
 590         wpas_notify_wps_event_fail(wpa_s, fail);
 591 #ifdef CONFIG_P2P
 592         wpas_p2p_wps_failed(wpa_s, fail);
 593 #endif /* CONFIG_P2P */
 594 }
 595
 596
 597 static void wpas_wps_reenable_networks_cb(void *eloop_ctx, void *timeout_ctx);
 598
 599 static void wpas_wps_reenable_networks(struct wpa_supplicant *wpa_s)
 600 {
 601         struct wpa_ssid *ssid;
 602         int changed = 0;
 603
 604         eloop_cancel_timeout(wpas_wps_reenable_networks_cb, wpa_s, NULL);
 605
 606         for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
 607                 if (ssid->disabled_for_connect && ssid->disabled) {
 608                         ssid->disabled_for_connect = 0;
 609                         ssid->disabled = 0;
 610                         wpas_notify_network_enabled_changed(wpa_s, ssid);
 611                         changed++;
 612                 }
 613         }
 614
 615         if (changed) {
 616 #ifndef CONFIG_NO_CONFIG_WRITE
 617                 if (wpa_s->conf->update_config &&
 618                     wpa_config_write(wpa_s->confname, wpa_s->conf)) {
 619                         wpa_printf(MSG_DEBUG, "WPS: Failed to update "
 620                                    "configuration");
 621                 }
 622 #endif /* CONFIG_NO_CONFIG_WRITE */
 623         }
 624 }
 625
 626
 627 static void wpas_wps_reenable_networks_cb(void *eloop_ctx, void *timeout_ctx)
 628 {
 629         struct wpa_supplicant *wpa_s = eloop_ctx;
 630         /* Enable the networks disabled during wpas_wps_reassoc */
 631         wpas_wps_reenable_networks(wpa_s);
 632 }
 633
 634
 635 static void wpa_supplicant_wps_event_success(struct wpa_supplicant *wpa_s)
 636 {
 637         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_SUCCESS);
 638         wpa_s->wps_success = 1;
 639         wpas_notify_wps_event_success(wpa_s);
 640         if (wpa_s->current_ssid)
 641                 wpas_clear_temp_disabled(wpa_s, wpa_s->current_ssid, 1);
 642         wpa_s->extra_blacklist_count = 0;
 643
 644         /*
 645          * Enable the networks disabled during wpas_wps_reassoc after 10
 646          * seconds. The 10 seconds timer is to allow the data connection to be
 647          * formed before allowing other networks to be selected.
 648          */
 649         eloop_register_timeout(10, 0, wpas_wps_reenable_networks_cb, wpa_s,
 650                                NULL);
 651
 652 #ifdef CONFIG_P2P
 653         wpas_p2p_wps_success(wpa_s, wpa_s->bssid, 0);
 654 #endif /* CONFIG_P2P */
 655 }
 656
 657
 658 static void wpa_supplicant_wps_event_er_ap_add(struct wpa_supplicant *wpa_s,
 659                                                struct wps_event_er_ap *ap)
 660 {
 661         char uuid_str[100];
 662         char dev_type[WPS_DEV_TYPE_BUFSIZE];
 663
 664         uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str));
 665         if (ap->pri_dev_type)
 666                 wps_dev_type_bin2str(ap->pri_dev_type, dev_type,
 667                                      sizeof(dev_type));
 668         else
 669                 dev_type[0] = '\0';
 670
 671         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_ADD "%s " MACSTR
 672                 " pri_dev_type=%s wps_state=%d |%s|%s|%s|%s|%s|%s|",
 673                 uuid_str, MAC2STR(ap->mac_addr), dev_type, ap->wps_state,
 674                 ap->friendly_name ? ap->friendly_name : "",
 675                 ap->manufacturer ? ap->manufacturer : "",
 676                 ap->model_description ? ap->model_description : "",
 677                 ap->model_name ? ap->model_name : "",
 678                 ap->manufacturer_url ? ap->manufacturer_url : "",
 679                 ap->model_url ? ap->model_url : "");
 680 }
 681
 682
 683 static void wpa_supplicant_wps_event_er_ap_remove(struct wpa_supplicant *wpa_s,
 684                                                   struct wps_event_er_ap *ap)
 685 {
 686         char uuid_str[100];
 687         uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str));
 688         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_REMOVE "%s", uuid_str);
 689 }
 690
 691
 692 static void wpa_supplicant_wps_event_er_enrollee_add(
 693         struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee)
 694 {
 695         char uuid_str[100];
 696         char dev_type[WPS_DEV_TYPE_BUFSIZE];
 697
 698         uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str));
 699         if (enrollee->pri_dev_type)
 700                 wps_dev_type_bin2str(enrollee->pri_dev_type, dev_type,
 701                                      sizeof(dev_type));
 702         else
 703                 dev_type[0] = '\0';
 704
 705         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_ADD "%s " MACSTR
 706                 " M1=%d config_methods=0x%x dev_passwd_id=%d pri_dev_type=%s "
 707                 "|%s|%s|%s|%s|%s|",
 708                 uuid_str, MAC2STR(enrollee->mac_addr), enrollee->m1_received,
 709                 enrollee->config_methods, enrollee->dev_passwd_id, dev_type,
 710                 enrollee->dev_name ? enrollee->dev_name : "",
 711                 enrollee->manufacturer ? enrollee->manufacturer : "",
 712                 enrollee->model_name ? enrollee->model_name : "",
 713                 enrollee->model_number ? enrollee->model_number : "",
 714                 enrollee->serial_number ? enrollee->serial_number : "");
 715 }
 716
 717
 718 static void wpa_supplicant_wps_event_er_enrollee_remove(
 719         struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee)
 720 {
 721         char uuid_str[100];
 722         uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str));
 723         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_REMOVE "%s " MACSTR,
 724                 uuid_str, MAC2STR(enrollee->mac_addr));
 725 }
 726
 727
 728 static void wpa_supplicant_wps_event_er_ap_settings(
 729         struct wpa_supplicant *wpa_s,
 730         struct wps_event_er_ap_settings *ap_settings)
 731 {
 732         char uuid_str[100];
 733         char key_str[65];
 734         const struct wps_credential *cred = ap_settings->cred;
 735
 736         key_str[0] = '\0';
 737         if (cred->auth_type & (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) {
 738                 if (cred->key_len >= 8 && cred->key_len <= 64) {
 739                         os_memcpy(key_str, cred->key, cred->key_len);
 740                         key_str[cred->key_len] = '\0';
 741                 }
 742         }
 743
 744         uuid_bin2str(ap_settings->uuid, uuid_str, sizeof(uuid_str));
 745         /* Use wpa_msg_ctrl to avoid showing the key in debug log */
 746         wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_SETTINGS
 747                      "uuid=%s ssid=%s auth_type=0x%04x encr_type=0x%04x "
 748                      "key=%s",
 749                      uuid_str, wpa_ssid_txt(cred->ssid, cred->ssid_len),
 750                      cred->auth_type, cred->encr_type, key_str);
 751 }
 752
 753
 754 static void wpa_supplicant_wps_event_er_set_sel_reg(
 755         struct wpa_supplicant *wpa_s,
 756         struct wps_event_er_set_selected_registrar *ev)
 757 {
 758         char uuid_str[100];
 759
 760         uuid_bin2str(ev->uuid, uuid_str, sizeof(uuid_str));
 761         switch (ev->state) {
 762         case WPS_ER_SET_SEL_REG_START:
 763                 wpa_msg(wpa_s, MSG_DEBUG, WPS_EVENT_ER_SET_SEL_REG
 764                         "uuid=%s state=START sel_reg=%d dev_passwd_id=%u "
 765                         "sel_reg_config_methods=0x%x",
 766                         uuid_str, ev->sel_reg, ev->dev_passwd_id,
 767                         ev->sel_reg_config_methods);
 768                 break;
 769         case WPS_ER_SET_SEL_REG_DONE:
 770                 wpa_msg(wpa_s, MSG_DEBUG, WPS_EVENT_ER_SET_SEL_REG
 771                         "uuid=%s state=DONE", uuid_str);
 772                 break;
 773         case WPS_ER_SET_SEL_REG_FAILED:
 774                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_SET_SEL_REG
 775                         "uuid=%s state=FAILED", uuid_str);
 776                 break;
 777         }
 778 }
 779
 780
 781 static void wpa_supplicant_wps_event(void *ctx, enum wps_event event,
 782                                      union wps_event_data *data)
 783 {
 784         struct wpa_supplicant *wpa_s = ctx;
 785         switch (event) {
 786         case WPS_EV_M2D:
 787                 wpa_supplicant_wps_event_m2d(wpa_s, &data->m2d);
 788                 break;
 789         case WPS_EV_FAIL:
 790                 wpa_supplicant_wps_event_fail(wpa_s, &data->fail);
 791                 break;
 792         case WPS_EV_SUCCESS:
 793                 wpa_supplicant_wps_event_success(wpa_s);
 794                 break;
 795         case WPS_EV_PWD_AUTH_FAIL:
 796 #ifdef CONFIG_AP
 797                 if (wpa_s->ap_iface && data->pwd_auth_fail.enrollee)
 798                         wpa_supplicant_ap_pwd_auth_fail(wpa_s);
 799 #endif /* CONFIG_AP */
 800                 break;
 801         case WPS_EV_PBC_OVERLAP:
 802                 break;
 803         case WPS_EV_PBC_TIMEOUT:
 804                 break;
 805         case WPS_EV_PBC_ACTIVE:
 806                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ACTIVE);
 807                 break;
 808         case WPS_EV_PBC_DISABLE:
 809                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_DISABLE);
 810                 break;
 811         case WPS_EV_ER_AP_ADD:
 812                 wpa_supplicant_wps_event_er_ap_add(wpa_s, &data->ap);
 813                 break;
 814         case WPS_EV_ER_AP_REMOVE:
 815                 wpa_supplicant_wps_event_er_ap_remove(wpa_s, &data->ap);
 816                 break;
 817         case WPS_EV_ER_ENROLLEE_ADD:
 818                 wpa_supplicant_wps_event_er_enrollee_add(wpa_s,
 819                                                          &data->enrollee);
 820                 break;
 821         case WPS_EV_ER_ENROLLEE_REMOVE:
 822                 wpa_supplicant_wps_event_er_enrollee_remove(wpa_s,
 823                                                             &data->enrollee);
 824                 break;
 825         case WPS_EV_ER_AP_SETTINGS:
 826                 wpa_supplicant_wps_event_er_ap_settings(wpa_s,
 827                                                         &data->ap_settings);
 828                 break;
 829         case WPS_EV_ER_SET_SELECTED_REGISTRAR:
 830                 wpa_supplicant_wps_event_er_set_sel_reg(wpa_s,
 831                                                         &data->set_sel_reg);
 832                 break;
 833         case WPS_EV_AP_PIN_SUCCESS:
 834                 break;
 835         }
 836 }
 837
 838
 839 static int wpa_supplicant_wps_rf_band(void *ctx)
 840 {
 841         struct wpa_supplicant *wpa_s = ctx;
 842
 843         if (!wpa_s->current_ssid || !wpa_s->assoc_freq)
 844                 return 0;
 845
 846         return (wpa_s->assoc_freq > 2484) ? WPS_RF_50GHZ : WPS_RF_24GHZ;
 847 }
 848
 849
 850 enum wps_request_type wpas_wps_get_req_type(struct wpa_ssid *ssid)
 851 {
 852         if (eap_is_wps_pbc_enrollee(&ssid->eap) ||
 853             eap_is_wps_pin_enrollee(&ssid->eap))
 854                 return WPS_REQ_ENROLLEE;
 855         else
 856                 return WPS_REQ_REGISTRAR;
 857 }
 858
 859
 860 static void wpas_clear_wps(struct wpa_supplicant *wpa_s)
 861 {
 862         int id;
 863         struct wpa_ssid *ssid, *remove_ssid = NULL, *prev_current;
 864
 865         wpa_s->after_wps = 0;
 866         wpa_s->known_wps_freq = 0;
 867
 868         prev_current = wpa_s->current_ssid;
 869
 870         /* Enable the networks disabled during wpas_wps_reassoc */
 871         wpas_wps_reenable_networks(wpa_s);
 872
 873         eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
 874         eloop_cancel_timeout(wpas_wps_clear_timeout, wpa_s, NULL);
 875
 876         /* Remove any existing WPS network from configuration */
 877         ssid = wpa_s->conf->ssid;
 878         while (ssid) {
 879                 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
 880                         if (ssid == wpa_s->current_ssid) {
 881                                 wpa_supplicant_deauthenticate(
 882                                         wpa_s, WLAN_REASON_DEAUTH_LEAVING);
 883                         }
 884                         id = ssid->id;
 885                         remove_ssid = ssid;
 886                 } else
 887                         id = -1;
 888                 ssid = ssid->next;
 889                 if (id >= 0) {
 890                         if (prev_current == remove_ssid) {
 891                                 wpa_sm_set_config(wpa_s->wpa, NULL);
 892                                 eapol_sm_notify_config(wpa_s->eapol, NULL,
 893                                                        NULL);
 894                         }
 895                         wpas_notify_network_removed(wpa_s, remove_ssid);
 896                         wpa_config_remove_network(wpa_s->conf, id);
 897                 }
 898         }
 899
 900         wpas_wps_clear_ap_info(wpa_s);
 901 }
 902
 903
 904 static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx)
 905 {
 906         struct wpa_supplicant *wpa_s = eloop_ctx;
 907         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_TIMEOUT "Requested operation timed "
 908                 "out");
 909         wpas_clear_wps(wpa_s);
 910 }
 911
 912
 913 static struct wpa_ssid * wpas_wps_add_network(struct wpa_supplicant *wpa_s,
 914                                               int registrar, const u8 *bssid)
 915 {
 916         struct wpa_ssid *ssid;
 917
 918         ssid = wpa_config_add_network(wpa_s->conf);
 919         if (ssid == NULL)
 920                 return NULL;
 921         wpas_notify_network_added(wpa_s, ssid);
 922         wpa_config_set_network_defaults(ssid);
 923         ssid->temporary = 1;
 924         if (wpa_config_set(ssid, "key_mgmt", "WPS", 0) < 0 ||
 925             wpa_config_set(ssid, "eap", "WSC", 0) < 0 ||
 926             wpa_config_set(ssid, "identity", registrar ?
 927                            "\"" WSC_ID_REGISTRAR "\"" :
 928                            "\"" WSC_ID_ENROLLEE "\"", 0) < 0) {
 929                 wpas_notify_network_removed(wpa_s, ssid);
 930                 wpa_config_remove_network(wpa_s->conf, ssid->id);
 931                 return NULL;
 932         }
 933
 934         if (bssid) {
 935 #ifndef CONFIG_P2P
 936                 struct wpa_bss *bss;
 937                 int count = 0;
 938 #endif /* CONFIG_P2P */
 939
 940                 os_memcpy(ssid->bssid, bssid, ETH_ALEN);
 941                 ssid->bssid_set = 1;
 942
 943                 /*
 944                  * Note: With P2P, the SSID may change at the time the WPS
 945                  * provisioning is started, so better not filter the AP based
 946                  * on the current SSID in the scan results.
 947                  */
 948 #ifndef CONFIG_P2P
 949                 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
 950                         if (os_memcmp(bssid, bss->bssid, ETH_ALEN) != 0)
 951                                 continue;
 952
 953                         os_free(ssid->ssid);
 954                         ssid->ssid = os_malloc(bss->ssid_len);
 955                         if (ssid->ssid == NULL)
 956                                 break;
 957                         os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
 958                         ssid->ssid_len = bss->ssid_len;
 959                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Picked SSID from "
 960                                           "scan results",
 961                                           ssid->ssid, ssid->ssid_len);
 962                         count++;
 963                 }
 964
 965                 if (count > 1) {
 966                         wpa_printf(MSG_DEBUG, "WPS: More than one SSID found "
 967                                    "for the AP; use wildcard");
 968                         os_free(ssid->ssid);
 969                         ssid->ssid = NULL;
 970                         ssid->ssid_len = 0;
 971                 }
 972 #endif /* CONFIG_P2P */
 973         }
 974
 975         return ssid;
 976 }
 977
 978
 979 static void wpas_wps_temp_disable(struct wpa_supplicant *wpa_s,
 980                                   struct wpa_ssid *selected)
 981 {
 982         struct wpa_ssid *ssid;
 983
 984         if (wpa_s->current_ssid)
 985                 wpa_supplicant_deauthenticate(
 986                         wpa_s, WLAN_REASON_DEAUTH_LEAVING);
 987
 988         /* Mark all other networks disabled and trigger reassociation */
 989         ssid = wpa_s->conf->ssid;
 990         while (ssid) {
 991                 int was_disabled = ssid->disabled;
 992                 ssid->disabled_for_connect = 0;
 993                 /*
 994                  * In case the network object corresponds to a persistent group
 995                  * then do not send out network disabled signal. In addition,
 996                  * do not change disabled status of persistent network objects
 997                  * from 2 to 1 should we connect to another network.
 998                  */
 999                 if (was_disabled != 2) {
1000                         ssid->disabled = ssid != selected;
1001                         if (was_disabled != ssid->disabled) {
1002                                 if (ssid->disabled)
1003                                         ssid->disabled_for_connect = 1;
1004                                 wpas_notify_network_enabled_changed(wpa_s,
1005                                                                     ssid);
1006                         }
1007                 }
1008                 ssid = ssid->next;
1009         }
1010 }
1011
1012
1013 static void wpas_wps_reassoc(struct wpa_supplicant *wpa_s,
1014                              struct wpa_ssid *selected, const u8 *bssid)
1015 {
1016         struct wpa_bss *bss;
1017
1018         wpa_s->after_wps = 0;
1019         wpa_s->known_wps_freq = 0;
1020         if (bssid) {
1021                 bss = wpa_bss_get_bssid_latest(wpa_s, bssid);
1022                 if (bss && bss->freq > 0) {
1023                         wpa_s->known_wps_freq = 1;
1024                         wpa_s->wps_freq = bss->freq;
1025                 }
1026         }
1027
1028         wpas_wps_temp_disable(wpa_s, selected);
1029
1030         wpa_s->disconnected = 0;
1031         wpa_s->reassociate = 1;
1032         wpa_s->scan_runs = 0;
1033         wpa_s->normal_scans = 0;
1034         wpa_s->wps_success = 0;
1035         wpa_s->blacklist_cleared = 0;
1036
1037         wpa_supplicant_cancel_sched_scan(wpa_s);
1038         wpa_supplicant_req_scan(wpa_s, 0, 0);
1039 }
1040
1041
1042 int wpas_wps_start_pbc(struct wpa_supplicant *wpa_s, const u8 *bssid,
1043                        int p2p_group)
1044 {
1045         struct wpa_ssid *ssid;
1046         wpas_clear_wps(wpa_s);
1047         ssid = wpas_wps_add_network(wpa_s, 0, bssid);
1048         if (ssid == NULL)
1049                 return -1;
1050         ssid->temporary = 1;
1051         ssid->p2p_group = p2p_group;
1052 #ifdef CONFIG_P2P
1053         if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) {
1054                 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1);
1055                 if (ssid->ssid) {
1056                         ssid->ssid_len = wpa_s->go_params->ssid_len;
1057                         os_memcpy(ssid->ssid, wpa_s->go_params->ssid,
1058                                   ssid->ssid_len);
1059                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP "
1060                                           "SSID", ssid->ssid, ssid->ssid_len);
1061                 }
1062         }
1063 #endif /* CONFIG_P2P */
1064         if (wpa_config_set(ssid, "phase1", "\"pbc=1\"", 0) < 0)
1065                 return -1;
1066         if (wpa_s->wps_fragment_size)
1067                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
1068         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
1069                                wpa_s, NULL);
1070         wpas_wps_reassoc(wpa_s, ssid, bssid);
1071         return 0;
1072 }
1073
1074
1075 static int wpas_wps_start_dev_pw(struct wpa_supplicant *wpa_s, const u8 *bssid,
1076                                  const char *pin, int p2p_group, u16 dev_pw_id,
1077                                  const u8 *peer_pubkey_hash,
1078                                  const u8 *ssid_val, size_t ssid_len)
1079 {
1080         struct wpa_ssid *ssid;
1081         char val[128 + 2 * WPS_OOB_PUBKEY_HASH_LEN];
1082         unsigned int rpin = 0;
1083         char hash[2 * WPS_OOB_PUBKEY_HASH_LEN + 10];
1084
1085         wpas_clear_wps(wpa_s);
1086         ssid = wpas_wps_add_network(wpa_s, 0, bssid);
1087         if (ssid == NULL) {
1088                 wpa_printf(MSG_DEBUG, "WPS: Could not add network");
1089                 return -1;
1090         }
1091         ssid->temporary = 1;
1092         ssid->p2p_group = p2p_group;
1093         if (ssid_val) {
1094                 ssid->ssid = os_malloc(ssid_len);
1095                 if (ssid->ssid) {
1096                         os_memcpy(ssid->ssid, ssid_val, ssid_len);
1097                         ssid->ssid_len = ssid_len;
1098                 }
1099         }
1100         if (peer_pubkey_hash) {
1101                 os_memcpy(hash, " pkhash=", 8);
1102                 wpa_snprintf_hex_uppercase(hash + 8, sizeof(hash) - 8,
1103                                            peer_pubkey_hash,
1104                                            WPS_OOB_PUBKEY_HASH_LEN);
1105         } else {
1106                 hash[0] = '\0';
1107         }
1108 #ifdef CONFIG_P2P
1109         if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) {
1110                 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1);
1111                 if (ssid->ssid) {
1112                         ssid->ssid_len = wpa_s->go_params->ssid_len;
1113                         os_memcpy(ssid->ssid, wpa_s->go_params->ssid,
1114                                   ssid->ssid_len);
1115                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP "
1116                                           "SSID", ssid->ssid, ssid->ssid_len);
1117                 }
1118         }
1119 #endif /* CONFIG_P2P */
1120         if (pin)
1121                 os_snprintf(val, sizeof(val), "\"pin=%s dev_pw_id=%u%s\"",
1122                             pin, dev_pw_id, hash);
1123         else {
1124                 rpin = wps_generate_pin();
1125                 os_snprintf(val, sizeof(val), "\"pin=%08d dev_pw_id=%u%s\"",
1126                             rpin, dev_pw_id, hash);
1127         }
1128         if (wpa_config_set(ssid, "phase1", val, 0) < 0)
1129                 return -1;
1130         if (wpa_s->wps_fragment_size)
1131                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
1132         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
1133                                wpa_s, NULL);
1134         wpa_s->wps_ap_iter = 1;
1135         wpas_wps_reassoc(wpa_s, ssid, bssid);
1136         return rpin;
1137 }
1138
1139
1140 int wpas_wps_start_pin(struct wpa_supplicant *wpa_s, const u8 *bssid,
1141                        const char *pin, int p2p_group, u16 dev_pw_id)
1142 {
1143         return wpas_wps_start_dev_pw(wpa_s, bssid, pin, p2p_group, dev_pw_id,
1144                                      NULL, NULL, 0);
1145 }
1146
1147
1148 /* Cancel the wps pbc/pin requests */
1149 int wpas_wps_cancel(struct wpa_supplicant *wpa_s)
1150 {
1151 #ifdef CONFIG_AP
1152         if (wpa_s->ap_iface) {
1153                 wpa_printf(MSG_DEBUG, "WPS: Cancelling in AP mode");
1154                 return wpa_supplicant_ap_wps_cancel(wpa_s);
1155         }
1156 #endif /* CONFIG_AP */
1157
1158         if (wpa_s->wpa_state == WPA_SCANNING ||
1159             wpa_s->wpa_state == WPA_DISCONNECTED) {
1160                 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - cancel scan");
1161                 wpa_supplicant_cancel_scan(wpa_s);
1162                 wpas_clear_wps(wpa_s);
1163         } else if (wpa_s->wpa_state >= WPA_ASSOCIATED) {
1164                 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - "
1165                            "deauthenticate");
1166                 wpa_supplicant_deauthenticate(wpa_s,
1167                                               WLAN_REASON_DEAUTH_LEAVING);
1168                 wpas_clear_wps(wpa_s);
1169         } else {
1170                 wpas_wps_reenable_networks(wpa_s);
1171                 wpas_wps_clear_ap_info(wpa_s);
1172                 if (eloop_cancel_timeout(wpas_wps_clear_timeout, wpa_s, NULL) >
1173                     0)
1174                         wpas_clear_wps(wpa_s);
1175         }
1176
1177         wpa_s->after_wps = 0;
1178
1179         return 0;
1180 }
1181
1182
1183 int wpas_wps_start_reg(struct wpa_supplicant *wpa_s, const u8 *bssid,
1184                        const char *pin, struct wps_new_ap_settings *settings)
1185 {
1186         struct wpa_ssid *ssid;
1187         char val[200];
1188         char *pos, *end;
1189         int res;
1190
1191         if (!pin)
1192                 return -1;
1193         wpas_clear_wps(wpa_s);
1194         ssid = wpas_wps_add_network(wpa_s, 1, bssid);
1195         if (ssid == NULL)
1196                 return -1;
1197         ssid->temporary = 1;
1198         pos = val;
1199         end = pos + sizeof(val);
1200         res = os_snprintf(pos, end - pos, "\"pin=%s", pin);
1201         if (res < 0 || res >= end - pos)
1202                 return -1;
1203         pos += res;
1204         if (settings) {
1205                 res = os_snprintf(pos, end - pos, " new_ssid=%s new_auth=%s "
1206                                   "new_encr=%s new_key=%s",
1207                                   settings->ssid_hex, settings->auth,
1208                                   settings->encr, settings->key_hex);
1209                 if (res < 0 || res >= end - pos)
1210                         return -1;
1211                 pos += res;
1212         }
1213         res = os_snprintf(pos, end - pos, "\"");
1214         if (res < 0 || res >= end - pos)
1215                 return -1;
1216         if (wpa_config_set(ssid, "phase1", val, 0) < 0)
1217                 return -1;
1218         if (wpa_s->wps_fragment_size)
1219                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
1220         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
1221                                wpa_s, NULL);
1222         wpas_wps_reassoc(wpa_s, ssid, bssid);
1223         return 0;
1224 }
1225
1226
1227 static int wpas_wps_new_psk_cb(void *ctx, const u8 *mac_addr,
1228                                const u8 *p2p_dev_addr, const u8 *psk,
1229                                size_t psk_len)
1230 {
1231         if (is_zero_ether_addr(p2p_dev_addr)) {
1232                 wpa_printf(MSG_DEBUG,
1233                            "Received new WPA/WPA2-PSK from WPS for STA " MACSTR,
1234                            MAC2STR(mac_addr));
1235         } else {
1236                 wpa_printf(MSG_DEBUG,
1237                            "Received new WPA/WPA2-PSK from WPS for STA " MACSTR
1238                            " P2P Device Addr " MACSTR,
1239                            MAC2STR(mac_addr), MAC2STR(p2p_dev_addr));
1240         }
1241         wpa_hexdump_key(MSG_DEBUG, "Per-device PSK", psk, psk_len);
1242
1243         /* TODO */
1244
1245         return 0;
1246 }
1247
1248
1249 static void wpas_wps_pin_needed_cb(void *ctx, const u8 *uuid_e,
1250                                    const struct wps_device_data *dev)
1251 {
1252         char uuid[40], txt[400];
1253         int len;
1254         char devtype[WPS_DEV_TYPE_BUFSIZE];
1255         if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
1256                 return;
1257         wpa_printf(MSG_DEBUG, "WPS: PIN needed for UUID-E %s", uuid);
1258         len = os_snprintf(txt, sizeof(txt), "WPS-EVENT-PIN-NEEDED %s " MACSTR
1259                           " [%s|%s|%s|%s|%s|%s]",
1260                           uuid, MAC2STR(dev->mac_addr), dev->device_name,
1261                           dev->manufacturer, dev->model_name,
1262                           dev->model_number, dev->serial_number,
1263                           wps_dev_type_bin2str(dev->pri_dev_type, devtype,
1264                                                sizeof(devtype)));
1265         if (len > 0 && len < (int) sizeof(txt))
1266                 wpa_printf(MSG_INFO, "%s", txt);
1267 }
1268
1269
1270 static void wpas_wps_set_sel_reg_cb(void *ctx, int sel_reg, u16 dev_passwd_id,
1271                                     u16 sel_reg_config_methods)
1272 {
1273 #ifdef CONFIG_WPS_ER
1274         struct wpa_supplicant *wpa_s = ctx;
1275
1276         if (wpa_s->wps_er == NULL)
1277                 return;
1278         wpa_printf(MSG_DEBUG, "WPS ER: SetSelectedRegistrar - sel_reg=%d "
1279                    "dev_password_id=%u sel_reg_config_methods=0x%x",
1280                    sel_reg, dev_passwd_id, sel_reg_config_methods);
1281         wps_er_set_sel_reg(wpa_s->wps_er, sel_reg, dev_passwd_id,
1282                            sel_reg_config_methods);
1283 #endif /* CONFIG_WPS_ER */
1284 }
1285
1286
1287 static u16 wps_fix_config_methods(u16 config_methods)
1288 {
1289 #ifdef CONFIG_WPS2
1290         if ((config_methods &
1291              (WPS_CONFIG_DISPLAY | WPS_CONFIG_VIRT_DISPLAY |
1292               WPS_CONFIG_PHY_DISPLAY)) == WPS_CONFIG_DISPLAY) {
1293                 wpa_printf(MSG_INFO, "WPS: Converting display to "
1294                            "virtual_display for WPS 2.0 compliance");
1295                 config_methods |= WPS_CONFIG_VIRT_DISPLAY;
1296         }
1297         if ((config_methods &
1298              (WPS_CONFIG_PUSHBUTTON | WPS_CONFIG_VIRT_PUSHBUTTON |
1299               WPS_CONFIG_PHY_PUSHBUTTON)) == WPS_CONFIG_PUSHBUTTON) {
1300                 wpa_printf(MSG_INFO, "WPS: Converting push_button to "
1301                            "virtual_push_button for WPS 2.0 compliance");
1302                 config_methods |= WPS_CONFIG_VIRT_PUSHBUTTON;
1303         }
1304 #endif /* CONFIG_WPS2 */
1305
1306         return config_methods;
1307 }
1308
1309
1310 static void wpas_wps_set_uuid(struct wpa_supplicant *wpa_s,
1311                               struct wps_context *wps)
1312 {
1313         char buf[50];
1314         const char *src;
1315
1316         if (is_nil_uuid(wpa_s->conf->uuid)) {
1317                 struct wpa_supplicant *first;
1318                 first = wpa_s->global->ifaces;
1319                 while (first && first->next)
1320                         first = first->next;
1321                 if (first && first != wpa_s) {
1322                         if (wps != wpa_s->global->ifaces->wps)
1323                                 os_memcpy(wps->uuid,
1324                                           wpa_s->global->ifaces->wps->uuid,
1325                                           WPS_UUID_LEN);
1326                         src = "from the first interface";
1327                 } else {
1328                         uuid_gen_mac_addr(wpa_s->own_addr, wps->uuid);
1329                         src = "based on MAC address";
1330                 }
1331         } else {
1332                 os_memcpy(wps->uuid, wpa_s->conf->uuid, WPS_UUID_LEN);
1333                 src = "based on configuration";
1334         }
1335
1336         uuid_bin2str(wps->uuid, buf, sizeof(buf));
1337         wpa_dbg(wpa_s, MSG_DEBUG, "WPS: UUID %s: %s", src, buf);
1338 }
1339
1340
1341 static void wpas_wps_set_vendor_ext_m1(struct wpa_supplicant *wpa_s,
1342                                        struct wps_context *wps)
1343 {
1344         wpabuf_free(wps->dev.vendor_ext_m1);
1345         wps->dev.vendor_ext_m1 = NULL;
1346
1347         if (wpa_s->conf->wps_vendor_ext_m1) {
1348                 wps->dev.vendor_ext_m1 =
1349                         wpabuf_dup(wpa_s->conf->wps_vendor_ext_m1);
1350                 if (!wps->dev.vendor_ext_m1) {
1351                         wpa_printf(MSG_ERROR, "WPS: Cannot "
1352                                    "allocate memory for vendor_ext_m1");
1353                 }
1354         }
1355 }
1356
1357
1358 int wpas_wps_init(struct wpa_supplicant *wpa_s)
1359 {
1360         struct wps_context *wps;
1361         struct wps_registrar_config rcfg;
1362         struct hostapd_hw_modes *modes;
1363         u16 m;
1364
1365         wps = os_zalloc(sizeof(*wps));
1366         if (wps == NULL)
1367                 return -1;
1368
1369         wps->cred_cb = wpa_supplicant_wps_cred;
1370         wps->event_cb = wpa_supplicant_wps_event;
1371         wps->rf_band_cb = wpa_supplicant_wps_rf_band;
1372         wps->cb_ctx = wpa_s;
1373
1374         wps->dev.device_name = wpa_s->conf->device_name;
1375         wps->dev.manufacturer = wpa_s->conf->manufacturer;
1376         wps->dev.model_name = wpa_s->conf->model_name;
1377         wps->dev.model_number = wpa_s->conf->model_number;
1378         wps->dev.serial_number = wpa_s->conf->serial_number;
1379         wps->config_methods =
1380                 wps_config_methods_str2bin(wpa_s->conf->config_methods);
1381         if ((wps->config_methods & (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) ==
1382             (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
1383                 wpa_printf(MSG_ERROR, "WPS: Both Label and Display config "
1384                            "methods are not allowed at the same time");
1385                 os_free(wps);
1386                 return -1;
1387         }
1388         wps->config_methods = wps_fix_config_methods(wps->config_methods);
1389         wps->dev.config_methods = wps->config_methods;
1390         os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type,
1391                   WPS_DEV_TYPE_LEN);
1392
1393         wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
1394         os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type,
1395                   WPS_DEV_TYPE_LEN * wps->dev.num_sec_dev_types);
1396
1397         wpas_wps_set_vendor_ext_m1(wpa_s, wps);
1398
1399         wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
1400         modes = wpa_s->hw.modes;
1401         if (modes) {
1402                 for (m = 0; m < wpa_s->hw.num_modes; m++) {
1403                         if (modes[m].mode == HOSTAPD_MODE_IEEE80211B ||
1404                             modes[m].mode == HOSTAPD_MODE_IEEE80211G)
1405                                 wps->dev.rf_bands |= WPS_RF_24GHZ;
1406                         else if (modes[m].mode == HOSTAPD_MODE_IEEE80211A)
1407                                 wps->dev.rf_bands |= WPS_RF_50GHZ;
1408                 }
1409         }
1410         if (wps->dev.rf_bands == 0) {
1411                 /*
1412                  * Default to claiming support for both bands if the driver
1413                  * does not provide support for fetching supported bands.
1414                  */
1415                 wps->dev.rf_bands = WPS_RF_24GHZ | WPS_RF_50GHZ;
1416         }
1417         os_memcpy(wps->dev.mac_addr, wpa_s->own_addr, ETH_ALEN);
1418         wpas_wps_set_uuid(wpa_s, wps);
1419
1420         wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK;
1421         wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP;
1422
1423         os_memset(&rcfg, 0, sizeof(rcfg));
1424         rcfg.new_psk_cb = wpas_wps_new_psk_cb;
1425         rcfg.pin_needed_cb = wpas_wps_pin_needed_cb;
1426         rcfg.set_sel_reg_cb = wpas_wps_set_sel_reg_cb;
1427         rcfg.cb_ctx = wpa_s;
1428
1429         wps->registrar = wps_registrar_init(wps, &rcfg);
1430         if (wps->registrar == NULL) {
1431                 wpa_printf(MSG_DEBUG, "Failed to initialize WPS Registrar");
1432                 os_free(wps);
1433                 return -1;
1434         }
1435
1436         wpa_s->wps = wps;
1437
1438         return 0;
1439 }
1440
1441
1442 void wpas_wps_deinit(struct wpa_supplicant *wpa_s)
1443 {
1444         eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
1445         eloop_cancel_timeout(wpas_wps_clear_timeout, wpa_s, NULL);
1446         eloop_cancel_timeout(wpas_wps_reenable_networks_cb, wpa_s, NULL);
1447         wpas_wps_clear_ap_info(wpa_s);
1448
1449         if (wpa_s->wps == NULL)
1450                 return;
1451
1452 #ifdef CONFIG_WPS_ER
1453         wps_er_deinit(wpa_s->wps_er, NULL, NULL);
1454         wpa_s->wps_er = NULL;
1455 #endif /* CONFIG_WPS_ER */
1456
1457         wps_registrar_deinit(wpa_s->wps->registrar);
1458         wpabuf_free(wpa_s->wps->dh_pubkey);
1459         wpabuf_free(wpa_s->wps->dh_privkey);
1460         wpabuf_free(wpa_s->wps->dev.vendor_ext_m1);
1461         os_free(wpa_s->wps->network_key);
1462         os_free(wpa_s->wps);
1463         wpa_s->wps = NULL;
1464 }
1465
1466
1467 int wpas_wps_ssid_bss_match(struct wpa_supplicant *wpa_s,
1468                             struct wpa_ssid *ssid, struct wpa_bss *bss)
1469 {
1470         struct wpabuf *wps_ie;
1471
1472         if (!(ssid->key_mgmt & WPA_KEY_MGMT_WPS))
1473                 return -1;
1474
1475         wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1476         if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
1477                 if (!wps_ie) {
1478                         wpa_printf(MSG_DEBUG, "   skip - non-WPS AP");
1479                         return 0;
1480                 }
1481
1482                 if (!wps_is_selected_pbc_registrar(wps_ie)) {
1483                         wpa_printf(MSG_DEBUG, "   skip - WPS AP "
1484                                    "without active PBC Registrar");
1485                         wpabuf_free(wps_ie);
1486                         return 0;
1487                 }
1488
1489                 /* TODO: overlap detection */
1490                 wpa_printf(MSG_DEBUG, "   selected based on WPS IE "
1491                            "(Active PBC)");
1492                 wpabuf_free(wps_ie);
1493                 return 1;
1494         }
1495
1496         if (eap_is_wps_pin_enrollee(&ssid->eap)) {
1497                 if (!wps_ie) {
1498                         wpa_printf(MSG_DEBUG, "   skip - non-WPS AP");
1499                         return 0;
1500                 }
1501
1502                 /*
1503                  * Start with WPS APs that advertise our address as an
1504                  * authorized MAC (v2.0) or active PIN Registrar (v1.0) and
1505                  * allow any WPS AP after couple of scans since some APs do not
1506                  * set Selected Registrar attribute properly when using
1507                  * external Registrar.
1508                  */
1509                 if (!wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1)) {
1510                         if (wpa_s->scan_runs < WPS_PIN_SCAN_IGNORE_SEL_REG) {
1511                                 wpa_printf(MSG_DEBUG, "   skip - WPS AP "
1512                                            "without active PIN Registrar");
1513                                 wpabuf_free(wps_ie);
1514                                 return 0;
1515                         }
1516                         wpa_printf(MSG_DEBUG, "   selected based on WPS IE");
1517                 } else {
1518                         wpa_printf(MSG_DEBUG, "   selected based on WPS IE "
1519                                    "(Authorized MAC or Active PIN)");
1520                 }
1521                 wpabuf_free(wps_ie);
1522                 return 1;
1523         }
1524
1525         if (wps_ie) {
1526                 wpa_printf(MSG_DEBUG, "   selected based on WPS IE");
1527                 wpabuf_free(wps_ie);
1528                 return 1;
1529         }
1530
1531         return -1;
1532 }
1533
1534
1535 int wpas_wps_ssid_wildcard_ok(struct wpa_supplicant *wpa_s,
1536                               struct wpa_ssid *ssid,
1537                               struct wpa_bss *bss)
1538 {
1539         struct wpabuf *wps_ie = NULL;
1540         int ret = 0;
1541
1542         if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
1543                 wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1544                 if (wps_ie && wps_is_selected_pbc_registrar(wps_ie)) {
1545                         /* allow wildcard SSID for WPS PBC */
1546                         ret = 1;
1547                 }
1548         } else if (eap_is_wps_pin_enrollee(&ssid->eap)) {
1549                 wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1550                 if (wps_ie &&
1551                     (wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1) ||
1552                      wpa_s->scan_runs >= WPS_PIN_SCAN_IGNORE_SEL_REG)) {
1553                         /* allow wildcard SSID for WPS PIN */
1554                         ret = 1;
1555                 }
1556         }
1557
1558         if (!ret && ssid->bssid_set &&
1559             os_memcmp(ssid->bssid, bss->bssid, ETH_ALEN) == 0) {
1560                 /* allow wildcard SSID due to hardcoded BSSID match */
1561                 ret = 1;
1562         }
1563
1564 #ifdef CONFIG_WPS_STRICT
1565         if (wps_ie) {
1566                 if (wps_validate_beacon_probe_resp(wps_ie, bss->beacon_ie_len >
1567                                                    0, bss->bssid) < 0)
1568                         ret = 0;
1569                 if (bss->beacon_ie_len) {
1570                         struct wpabuf *bcn_wps;
1571                         bcn_wps = wpa_bss_get_vendor_ie_multi_beacon(
1572                                 bss, WPS_IE_VENDOR_TYPE);
1573                         if (bcn_wps == NULL) {
1574                                 wpa_printf(MSG_DEBUG, "WPS: Mandatory WPS IE "
1575                                            "missing from AP Beacon");
1576                                 ret = 0;
1577                         } else {
1578                                 if (wps_validate_beacon(wps_ie) < 0)
1579                                         ret = 0;
1580                                 wpabuf_free(bcn_wps);
1581                         }
1582                 }
1583         }
1584 #endif /* CONFIG_WPS_STRICT */
1585
1586         wpabuf_free(wps_ie);
1587
1588         return ret;
1589 }
1590
1591
1592 int wpas_wps_scan_pbc_overlap(struct wpa_supplicant *wpa_s,
1593                               struct wpa_bss *selected, struct wpa_ssid *ssid)
1594 {
1595         const u8 *sel_uuid, *uuid;
1596         struct wpabuf *wps_ie;
1597         int ret = 0;
1598         struct wpa_bss *bss;
1599
1600         if (!eap_is_wps_pbc_enrollee(&ssid->eap))
1601                 return 0;
1602
1603         wpa_printf(MSG_DEBUG, "WPS: Check whether PBC session overlap is "
1604                    "present in scan results; selected BSSID " MACSTR,
1605                    MAC2STR(selected->bssid));
1606
1607         /* Make sure that only one AP is in active PBC mode */
1608         wps_ie = wpa_bss_get_vendor_ie_multi(selected, WPS_IE_VENDOR_TYPE);
1609         if (wps_ie) {
1610                 sel_uuid = wps_get_uuid_e(wps_ie);
1611                 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the selected BSS",
1612                             sel_uuid, UUID_LEN);
1613         } else {
1614                 wpa_printf(MSG_DEBUG, "WPS: Selected BSS does not include "
1615                            "WPS IE?!");
1616                 sel_uuid = NULL;
1617         }
1618
1619         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1620                 struct wpabuf *ie;
1621                 if (bss == selected)
1622                         continue;
1623                 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1624                 if (!ie)
1625                         continue;
1626                 if (!wps_is_selected_pbc_registrar(ie)) {
1627                         wpabuf_free(ie);
1628                         continue;
1629                 }
1630                 wpa_printf(MSG_DEBUG, "WPS: Another BSS in active PBC mode: "
1631                            MACSTR, MAC2STR(bss->bssid));
1632                 uuid = wps_get_uuid_e(ie);
1633                 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the other BSS",
1634                             uuid, UUID_LEN);
1635                 if (sel_uuid == NULL || uuid == NULL ||
1636                     os_memcmp(sel_uuid, uuid, UUID_LEN) != 0) {
1637                         ret = 1; /* PBC overlap */
1638                         wpa_msg(wpa_s, MSG_INFO, "WPS: PBC overlap detected: "
1639                                 MACSTR " and " MACSTR,
1640                                 MAC2STR(selected->bssid),
1641                                 MAC2STR(bss->bssid));
1642                         wpabuf_free(ie);
1643                         break;
1644                 }
1645
1646                 /* TODO: verify that this is reasonable dual-band situation */
1647
1648                 wpabuf_free(ie);
1649         }
1650
1651         wpabuf_free(wps_ie);
1652
1653         return ret;
1654 }
1655
1656
1657 void wpas_wps_notify_scan_results(struct wpa_supplicant *wpa_s)
1658 {
1659         struct wpa_bss *bss;
1660         unsigned int pbc = 0, auth = 0, pin = 0, wps = 0;
1661
1662         if (wpa_s->disconnected || wpa_s->wpa_state >= WPA_ASSOCIATED)
1663                 return;
1664
1665         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1666                 struct wpabuf *ie;
1667                 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1668                 if (!ie)
1669                         continue;
1670                 if (wps_is_selected_pbc_registrar(ie))
1671                         pbc++;
1672                 else if (wps_is_addr_authorized(ie, wpa_s->own_addr, 0))
1673                         auth++;
1674                 else if (wps_is_selected_pin_registrar(ie))
1675                         pin++;
1676                 else
1677                         wps++;
1678                 wpabuf_free(ie);
1679         }
1680
1681         if (pbc)
1682                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PBC);
1683         else if (auth)
1684                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_AUTH);
1685         else if (pin)
1686                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PIN);
1687         else if (wps)
1688                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE);
1689 }
1690
1691
1692 int wpas_wps_searching(struct wpa_supplicant *wpa_s)
1693 {
1694         struct wpa_ssid *ssid;
1695
1696         for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1697                 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && !ssid->disabled)
1698                         return 1;
1699         }
1700
1701         return 0;
1702 }
1703
1704
1705 int wpas_wps_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
1706                               char *end)
1707 {
1708         struct wpabuf *wps_ie;
1709         int ret;
1710
1711         wps_ie = ieee802_11_vendor_ie_concat(ies, ies_len, WPS_DEV_OUI_WFA);
1712         if (wps_ie == NULL)
1713                 return 0;
1714
1715         ret = wps_attr_text(wps_ie, buf, end);
1716         wpabuf_free(wps_ie);
1717         return ret;
1718 }
1719
1720
1721 int wpas_wps_er_start(struct wpa_supplicant *wpa_s, const char *filter)
1722 {
1723 #ifdef CONFIG_WPS_ER
1724         if (wpa_s->wps_er) {
1725                 wps_er_refresh(wpa_s->wps_er);
1726                 return 0;
1727         }
1728         wpa_s->wps_er = wps_er_init(wpa_s->wps, wpa_s->ifname, filter);
1729         if (wpa_s->wps_er == NULL)
1730                 return -1;
1731         return 0;
1732 #else /* CONFIG_WPS_ER */
1733         return 0;
1734 #endif /* CONFIG_WPS_ER */
1735 }
1736
1737
1738 int wpas_wps_er_stop(struct wpa_supplicant *wpa_s)
1739 {
1740 #ifdef CONFIG_WPS_ER
1741         wps_er_deinit(wpa_s->wps_er, NULL, NULL);
1742         wpa_s->wps_er = NULL;
1743 #endif /* CONFIG_WPS_ER */
1744         return 0;
1745 }
1746
1747
1748 #ifdef CONFIG_WPS_ER
1749 int wpas_wps_er_add_pin(struct wpa_supplicant *wpa_s, const u8 *addr,
1750                         const char *uuid, const char *pin)
1751 {
1752         u8 u[UUID_LEN];
1753         const u8 *use_uuid = NULL;
1754         u8 addr_buf[ETH_ALEN];
1755
1756         if (os_strcmp(uuid, "any") == 0) {
1757         } else if (uuid_str2bin(uuid, u) == 0) {
1758                 use_uuid = u;
1759         } else if (hwaddr_aton(uuid, addr_buf) == 0) {
1760                 use_uuid = wps_er_get_sta_uuid(wpa_s->wps_er, addr_buf);
1761                 if (use_uuid == NULL)
1762                         return -1;
1763         } else
1764                 return -1;
1765         return wps_registrar_add_pin(wpa_s->wps->registrar, addr,
1766                                      use_uuid,
1767                                      (const u8 *) pin, os_strlen(pin), 300);
1768 }
1769
1770
1771 int wpas_wps_er_pbc(struct wpa_supplicant *wpa_s, const char *uuid)
1772 {
1773         u8 u[UUID_LEN], *use_uuid = NULL;
1774         u8 addr[ETH_ALEN], *use_addr = NULL;
1775
1776         if (uuid_str2bin(uuid, u) == 0)
1777                 use_uuid = u;
1778         else if (hwaddr_aton(uuid, addr) == 0)
1779                 use_addr = addr;
1780         else
1781                 return -1;
1782         return wps_er_pbc(wpa_s->wps_er, use_uuid, use_addr);
1783 }
1784
1785
1786 int wpas_wps_er_learn(struct wpa_supplicant *wpa_s, const char *uuid,
1787                       const char *pin)
1788 {
1789         u8 u[UUID_LEN], *use_uuid = NULL;
1790         u8 addr[ETH_ALEN], *use_addr = NULL;
1791
1792         if (uuid_str2bin(uuid, u) == 0)
1793                 use_uuid = u;
1794         else if (hwaddr_aton(uuid, addr) == 0)
1795                 use_addr = addr;
1796         else
1797                 return -1;
1798
1799         return wps_er_learn(wpa_s->wps_er, use_uuid, use_addr, (const u8 *) pin,
1800                             os_strlen(pin));
1801 }
1802
1803
1804 static int wpas_wps_network_to_cred(struct wpa_ssid *ssid,
1805                                     struct wps_credential *cred)
1806 {
1807         os_memset(cred, 0, sizeof(*cred));
1808         if (ssid->ssid_len > 32)
1809                 return -1;
1810         os_memcpy(cred->ssid, ssid->ssid, ssid->ssid_len);
1811         cred->ssid_len = ssid->ssid_len;
1812         if (ssid->key_mgmt & WPA_KEY_MGMT_PSK) {
1813                 cred->auth_type = (ssid->proto & WPA_PROTO_RSN) ?
1814                         WPS_AUTH_WPA2PSK : WPS_AUTH_WPAPSK;
1815                 if (ssid->pairwise_cipher & WPA_CIPHER_CCMP)
1816                         cred->encr_type = WPS_ENCR_AES;
1817                 else
1818                         cred->encr_type = WPS_ENCR_TKIP;
1819                 if (ssid->passphrase) {
1820                         cred->key_len = os_strlen(ssid->passphrase);
1821                         if (cred->key_len >= 64)
1822                                 return -1;
1823                         os_memcpy(cred->key, ssid->passphrase, cred->key_len);
1824                 } else if (ssid->psk_set) {
1825                         cred->key_len = 32;
1826                         os_memcpy(cred->key, ssid->psk, 32);
1827                 } else
1828                         return -1;
1829         } else {
1830                 cred->auth_type = WPS_AUTH_OPEN;
1831                 cred->encr_type = WPS_ENCR_NONE;
1832         }
1833
1834         return 0;
1835 }
1836
1837
1838 int wpas_wps_er_set_config(struct wpa_supplicant *wpa_s, const char *uuid,
1839                            int id)
1840 {
1841         u8 u[UUID_LEN], *use_uuid = NULL;
1842         u8 addr[ETH_ALEN], *use_addr = NULL;
1843         struct wpa_ssid *ssid;
1844         struct wps_credential cred;
1845
1846         if (uuid_str2bin(uuid, u) == 0)
1847                 use_uuid = u;
1848         else if (hwaddr_aton(uuid, addr) == 0)
1849                 use_addr = addr;
1850         else
1851                 return -1;
1852         ssid = wpa_config_get_network(wpa_s->conf, id);
1853         if (ssid == NULL || ssid->ssid == NULL)
1854                 return -1;
1855
1856         if (wpas_wps_network_to_cred(ssid, &cred) < 0)
1857                 return -1;
1858         return wps_er_set_config(wpa_s->wps_er, use_uuid, use_addr, &cred);
1859 }
1860
1861
1862 int wpas_wps_er_config(struct wpa_supplicant *wpa_s, const char *uuid,
1863                        const char *pin, struct wps_new_ap_settings *settings)
1864 {
1865         u8 u[UUID_LEN], *use_uuid = NULL;
1866         u8 addr[ETH_ALEN], *use_addr = NULL;
1867         struct wps_credential cred;
1868         size_t len;
1869
1870         if (uuid_str2bin(uuid, u) == 0)
1871                 use_uuid = u;
1872         else if (hwaddr_aton(uuid, addr) == 0)
1873                 use_addr = addr;
1874         else
1875                 return -1;
1876         if (settings->ssid_hex == NULL || settings->auth == NULL ||
1877             settings->encr == NULL || settings->key_hex == NULL)
1878                 return -1;
1879
1880         os_memset(&cred, 0, sizeof(cred));
1881         len = os_strlen(settings->ssid_hex);
1882         if ((len & 1) || len > 2 * sizeof(cred.ssid) ||
1883             hexstr2bin(settings->ssid_hex, cred.ssid, len / 2))
1884                 return -1;
1885         cred.ssid_len = len / 2;
1886
1887         len = os_strlen(settings->key_hex);
1888         if ((len & 1) || len > 2 * sizeof(cred.key) ||
1889             hexstr2bin(settings->key_hex, cred.key, len / 2))
1890                 return -1;
1891         cred.key_len = len / 2;
1892
1893         if (os_strcmp(settings->auth, "OPEN") == 0)
1894                 cred.auth_type = WPS_AUTH_OPEN;
1895         else if (os_strcmp(settings->auth, "WPAPSK") == 0)
1896                 cred.auth_type = WPS_AUTH_WPAPSK;
1897         else if (os_strcmp(settings->auth, "WPA2PSK") == 0)
1898                 cred.auth_type = WPS_AUTH_WPA2PSK;
1899         else
1900                 return -1;
1901
1902         if (os_strcmp(settings->encr, "NONE") == 0)
1903                 cred.encr_type = WPS_ENCR_NONE;
1904         else if (os_strcmp(settings->encr, "WEP") == 0)
1905                 cred.encr_type = WPS_ENCR_WEP;
1906         else if (os_strcmp(settings->encr, "TKIP") == 0)
1907                 cred.encr_type = WPS_ENCR_TKIP;
1908         else if (os_strcmp(settings->encr, "CCMP") == 0)
1909                 cred.encr_type = WPS_ENCR_AES;
1910         else
1911                 return -1;
1912
1913         return wps_er_config(wpa_s->wps_er, use_uuid, use_addr,
1914                              (const u8 *) pin, os_strlen(pin), &cred);
1915 }
1916
1917
1918 #ifdef CONFIG_WPS_NFC
1919 struct wpabuf * wpas_wps_er_nfc_config_token(struct wpa_supplicant *wpa_s,
1920                                              int ndef, const char *uuid)
1921 {
1922         struct wpabuf *ret;
1923         u8 u[UUID_LEN], *use_uuid = NULL;
1924         u8 addr[ETH_ALEN], *use_addr = NULL;
1925
1926         if (!wpa_s->wps_er)
1927                 return NULL;
1928
1929         if (uuid_str2bin(uuid, u) == 0)
1930                 use_uuid = u;
1931         else if (hwaddr_aton(uuid, addr) == 0)
1932                 use_addr = addr;
1933         else
1934                 return NULL;
1935
1936         ret = wps_er_nfc_config_token(wpa_s->wps_er, use_uuid, use_addr);
1937         if (ndef && ret) {
1938                 struct wpabuf *tmp;
1939                 tmp = ndef_build_wifi(ret);
1940                 wpabuf_free(ret);
1941                 if (tmp == NULL)
1942                         return NULL;
1943                 ret = tmp;
1944         }
1945
1946         return ret;
1947 }
1948 #endif /* CONFIG_WPS_NFC */
1949
1950
1951 static int callbacks_pending = 0;
1952
1953 static void wpas_wps_terminate_cb(void *ctx)
1954 {
1955         wpa_printf(MSG_DEBUG, "WPS ER: Terminated");
1956         if (--callbacks_pending <= 0)
1957                 eloop_terminate();
1958 }
1959 #endif /* CONFIG_WPS_ER */
1960
1961
1962 int wpas_wps_terminate_pending(struct wpa_supplicant *wpa_s)
1963 {
1964 #ifdef CONFIG_WPS_ER
1965         if (wpa_s->wps_er) {
1966                 callbacks_pending++;
1967                 wps_er_deinit(wpa_s->wps_er, wpas_wps_terminate_cb, wpa_s);
1968                 wpa_s->wps_er = NULL;
1969                 return 1;
1970         }
1971 #endif /* CONFIG_WPS_ER */
1972         return 0;
1973 }
1974
1975
1976 void wpas_wps_update_config(struct wpa_supplicant *wpa_s)
1977 {
1978         struct wps_context *wps = wpa_s->wps;
1979
1980         if (wps == NULL)
1981                 return;
1982
1983         if (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS) {
1984                 wps->config_methods = wps_config_methods_str2bin(
1985                         wpa_s->conf->config_methods);
1986                 if ((wps->config_methods &
1987                      (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) ==
1988                     (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
1989                         wpa_printf(MSG_ERROR, "WPS: Both Label and Display "
1990                                    "config methods are not allowed at the "
1991                                    "same time");
1992                         wps->config_methods &= ~WPS_CONFIG_LABEL;
1993                 }
1994         }
1995         wps->config_methods = wps_fix_config_methods(wps->config_methods);
1996         wps->dev.config_methods = wps->config_methods;
1997
1998         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
1999                 os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type,
2000                           WPS_DEV_TYPE_LEN);
2001
2002         if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE) {
2003                 wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
2004                 os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type,
2005                           wps->dev.num_sec_dev_types * WPS_DEV_TYPE_LEN);
2006         }
2007
2008         if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION)
2009                 wpas_wps_set_vendor_ext_m1(wpa_s, wps);
2010
2011         if (wpa_s->conf->changed_parameters & CFG_CHANGED_OS_VERSION)
2012                 wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
2013
2014         if (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID)
2015                 wpas_wps_set_uuid(wpa_s, wps);
2016
2017         if (wpa_s->conf->changed_parameters &
2018             (CFG_CHANGED_DEVICE_NAME | CFG_CHANGED_WPS_STRING)) {
2019                 /* Update pointers to make sure they refer current values */
2020                 wps->dev.device_name = wpa_s->conf->device_name;
2021                 wps->dev.manufacturer = wpa_s->conf->manufacturer;
2022                 wps->dev.model_name = wpa_s->conf->model_name;
2023                 wps->dev.model_number = wpa_s->conf->model_number;
2024                 wps->dev.serial_number = wpa_s->conf->serial_number;
2025         }
2026 }
2027
2028
2029 #ifdef CONFIG_WPS_NFC
2030
2031 #ifdef CONFIG_WPS_ER
2032 static struct wpabuf *
2033 wpas_wps_network_config_token(struct wpa_supplicant *wpa_s, int ndef,
2034                               struct wpa_ssid *ssid)
2035 {
2036         struct wpabuf *ret;
2037         struct wps_credential cred;
2038
2039         if (wpas_wps_network_to_cred(ssid, &cred) < 0)
2040                 return NULL;
2041
2042         ret = wps_er_config_token_from_cred(wpa_s->wps, &cred);
2043
2044         if (ndef && ret) {
2045                 struct wpabuf *tmp;
2046                 tmp = ndef_build_wifi(ret);
2047                 wpabuf_free(ret);
2048                 if (tmp == NULL)
2049                         return NULL;
2050                 ret = tmp;
2051         }
2052
2053         return ret;
2054 }
2055 #endif /* CONFIG_WPS_ER */
2056
2057
2058 struct wpabuf * wpas_wps_nfc_config_token(struct wpa_supplicant *wpa_s,
2059                                           int ndef, const char *id_str)
2060 {
2061 #ifdef CONFIG_WPS_ER
2062         if (id_str) {
2063                 int id;
2064                 char *end = NULL;
2065                 struct wpa_ssid *ssid;
2066
2067                 id = strtol(id_str, &end, 10);
2068                 if (end && *end)
2069                         return NULL;
2070
2071                 ssid = wpa_config_get_network(wpa_s->conf, id);
2072                 if (ssid == NULL)
2073                         return NULL;
2074                 return wpas_wps_network_config_token(wpa_s, ndef, ssid);
2075         }
2076 #endif /* CONFIG_WPS_ER */
2077 #ifdef CONFIG_AP
2078         if (wpa_s->ap_iface)
2079                 return wpas_ap_wps_nfc_config_token(wpa_s, ndef);
2080 #endif /* CONFIG_AP */
2081         return NULL;
2082 }
2083
2084
2085 struct wpabuf * wpas_wps_nfc_token(struct wpa_supplicant *wpa_s, int ndef)
2086 {
2087         if (wpa_s->conf->wps_nfc_pw_from_config) {
2088                 return wps_nfc_token_build(ndef,
2089                                            wpa_s->conf->wps_nfc_dev_pw_id,
2090                                            wpa_s->conf->wps_nfc_dh_pubkey,
2091                                            wpa_s->conf->wps_nfc_dev_pw);
2092         }
2093
2094         return wps_nfc_token_gen(ndef, &wpa_s->conf->wps_nfc_dev_pw_id,
2095                                  &wpa_s->conf->wps_nfc_dh_pubkey,
2096                                  &wpa_s->conf->wps_nfc_dh_privkey,
2097                                  &wpa_s->conf->wps_nfc_dev_pw);
2098 }
2099
2100
2101 int wpas_wps_start_nfc(struct wpa_supplicant *wpa_s, const u8 *bssid,
2102                        const struct wpabuf *dev_pw, u16 dev_pw_id,
2103                        int p2p_group, const u8 *peer_pubkey_hash,
2104                        const u8 *ssid, size_t ssid_len)
2105 {
2106         struct wps_context *wps = wpa_s->wps;
2107         char pw[32 * 2 + 1];
2108
2109         if (dev_pw == NULL) {
2110                 dev_pw = wpa_s->conf->wps_nfc_dev_pw;
2111                 dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
2112         }
2113
2114         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL ||
2115             wpa_s->conf->wps_nfc_dh_privkey == NULL ||
2116             dev_pw == NULL)
2117                 return -1;
2118
2119         dh5_free(wps->dh_ctx);
2120         wpabuf_free(wps->dh_pubkey);
2121         wpabuf_free(wps->dh_privkey);
2122         wps->dh_privkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
2123         wps->dh_pubkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
2124         if (wps->dh_privkey == NULL || wps->dh_pubkey == NULL) {
2125                 wps->dh_ctx = NULL;
2126                 wpabuf_free(wps->dh_pubkey);
2127                 wps->dh_pubkey = NULL;
2128                 wpabuf_free(wps->dh_privkey);
2129                 wps->dh_privkey = NULL;
2130                 return -1;
2131         }
2132         wps->dh_ctx = dh5_init_fixed(wps->dh_privkey, wps->dh_pubkey);
2133         if (wps->dh_ctx == NULL) {
2134                 wpabuf_free(wps->dh_pubkey);
2135                 wps->dh_pubkey = NULL;
2136                 wpabuf_free(wps->dh_privkey);
2137                 wps->dh_privkey = NULL;
2138                 return -1;
2139         }
2140
2141         wpa_snprintf_hex_uppercase(pw, sizeof(pw),
2142                                    wpabuf_head(dev_pw), wpabuf_len(dev_pw));
2143         return wpas_wps_start_dev_pw(wpa_s, bssid, pw, p2p_group, dev_pw_id,
2144                                      peer_pubkey_hash, ssid, ssid_len);
2145 }
2146
2147
2148 static int wpas_wps_use_cred(struct wpa_supplicant *wpa_s,
2149                              struct wps_parse_attr *attr)
2150 {
2151         wpa_s->wps_ap_channel = 0;
2152
2153         /*
2154          * Disable existing networks temporarily to allow the newly learned
2155          * credential to be preferred. Enable the temporarily disabled networks
2156          * after 10 seconds.
2157          */
2158         wpas_wps_temp_disable(wpa_s, NULL);
2159         eloop_register_timeout(10, 0, wpas_wps_reenable_networks_cb, wpa_s,
2160                                NULL);
2161
2162         if (wps_oob_use_cred(wpa_s->wps, attr) < 0)
2163                 return -1;
2164
2165         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
2166                 return 0;
2167
2168         wpa_printf(MSG_DEBUG, "WPS: Request reconnection with new network "
2169                    "based on the received credential added");
2170         wpa_s->normal_scans = 0;
2171         wpa_supplicant_reinit_autoscan(wpa_s);
2172         if (wpa_s->wps_ap_channel) {
2173                 u16 chan = wpa_s->wps_ap_channel;
2174                 int freq = 0;
2175
2176                 if (chan >= 1 && chan <= 13)
2177                         freq = 2407 + 5 * chan;
2178                 else if (chan == 14)
2179                         freq = 2484;
2180                 else if (chan >= 30)
2181                         freq = 5000 + 5 * chan;
2182
2183                 if (freq) {
2184                         wpa_printf(MSG_DEBUG, "WPS: Credential indicated "
2185                                    "AP channel %u -> %u MHz", chan, freq);
2186                         wpa_s->after_wps = 5;
2187                         wpa_s->wps_freq = freq;
2188                 }
2189         }
2190         wpa_s->disconnected = 0;
2191         wpa_s->reassociate = 1;
2192
2193         wpa_supplicant_cancel_sched_scan(wpa_s);
2194         wpa_supplicant_req_scan(wpa_s, 0, 0);
2195
2196         return 0;
2197 }
2198
2199
2200 #ifdef CONFIG_WPS_ER
2201 static int wpas_wps_add_nfc_password_token(struct wpa_supplicant *wpa_s,
2202                                            struct wps_parse_attr *attr)
2203 {
2204         return wps_registrar_add_nfc_password_token(
2205                 wpa_s->wps->registrar, attr->oob_dev_password,
2206                 attr->oob_dev_password_len);
2207 }
2208 #endif /* CONFIG_WPS_ER */
2209
2210
2211 static int wpas_wps_nfc_tag_process(struct wpa_supplicant *wpa_s,
2212                                     const struct wpabuf *wps)
2213 {
2214         struct wps_parse_attr attr;
2215
2216         wpa_hexdump_buf(MSG_DEBUG, "WPS: Received NFC tag payload", wps);
2217
2218         if (wps_parse_msg(wps, &attr)) {
2219                 wpa_printf(MSG_DEBUG, "WPS: Ignore invalid data from NFC tag");
2220                 return -1;
2221         }
2222
2223         if (attr.num_cred)
2224                 return wpas_wps_use_cred(wpa_s, &attr);
2225
2226 #ifdef CONFIG_WPS_ER
2227         if (attr.oob_dev_password)
2228                 return wpas_wps_add_nfc_password_token(wpa_s, &attr);
2229 #endif /* CONFIG_WPS_ER */
2230
2231         wpa_printf(MSG_DEBUG, "WPS: Ignore unrecognized NFC tag");
2232         return -1;
2233 }
2234
2235
2236 int wpas_wps_nfc_tag_read(struct wpa_supplicant *wpa_s,
2237                           const struct wpabuf *data)
2238 {
2239         const struct wpabuf *wps = data;
2240         struct wpabuf *tmp = NULL;
2241         int ret;
2242
2243         if (wpabuf_len(data) < 4)
2244                 return -1;
2245
2246         if (*wpabuf_head_u8(data) != 0x10) {
2247                 /* Assume this contains full NDEF record */
2248                 tmp = ndef_parse_wifi(data);
2249                 if (tmp == NULL) {
2250                         wpa_printf(MSG_DEBUG, "WPS: Could not parse NDEF");
2251                         return -1;
2252                 }
2253                 wps = tmp;
2254         }
2255
2256         ret = wpas_wps_nfc_tag_process(wpa_s, wps);
2257         wpabuf_free(tmp);
2258         return ret;
2259 }
2260
2261
2262 struct wpabuf * wpas_wps_nfc_handover_req(struct wpa_supplicant *wpa_s,
2263                                           int ndef)
2264 {
2265         struct wpabuf *ret;
2266
2267         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
2268             wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
2269                            &wpa_s->conf->wps_nfc_dh_privkey) < 0)
2270                 return NULL;
2271
2272         ret = wps_build_nfc_handover_req(wpa_s->wps,
2273                                          wpa_s->conf->wps_nfc_dh_pubkey);
2274
2275         if (ndef && ret) {
2276                 struct wpabuf *tmp;
2277                 tmp = ndef_build_wifi(ret);
2278                 wpabuf_free(ret);
2279                 if (tmp == NULL)
2280                         return NULL;
2281                 ret = tmp;
2282         }
2283
2284         return ret;
2285 }
2286
2287
2288 #ifdef CONFIG_WPS_NFC
2289 static struct wpabuf *
2290 wpas_wps_er_nfc_handover_sel(struct wpa_supplicant *wpa_s, int ndef,
2291                              const char *uuid)
2292 {
2293 #ifdef CONFIG_WPS_ER
2294         struct wpabuf *ret;
2295         u8 u[UUID_LEN], *use_uuid = NULL;
2296         u8 addr[ETH_ALEN], *use_addr = NULL;
2297
2298         if (!wpa_s->wps_er)
2299                 return NULL;
2300
2301         if (uuid == NULL)
2302                 return NULL;
2303         if (uuid_str2bin(uuid, u) == 0)
2304                 use_uuid = u;
2305         else if (hwaddr_aton(uuid, addr) == 0)
2306                 use_addr = addr;
2307         else
2308                 return NULL;
2309
2310         /*
2311          * Handover Select carrier record for WPS uses the same format as
2312          * configuration token.
2313          */
2314         ret = wps_er_nfc_config_token(wpa_s->wps_er, use_uuid, use_addr);
2315         if (ndef && ret) {
2316                 struct wpabuf *tmp;
2317                 tmp = ndef_build_wifi(ret);
2318                 wpabuf_free(ret);
2319                 if (tmp == NULL)
2320                         return NULL;
2321                 ret = tmp;
2322         }
2323
2324         return ret;
2325 #else /* CONFIG_WPS_ER */
2326         return NULL;
2327 #endif /* CONFIG_WPS_ER */
2328 }
2329 #endif /* CONFIG_WPS_NFC */
2330
2331
2332 struct wpabuf * wpas_wps_nfc_handover_sel(struct wpa_supplicant *wpa_s,
2333                                           int ndef, int cr, const char *uuid)
2334 {
2335         struct wpabuf *ret;
2336         if (!cr)
2337                 return NULL;
2338         ret = wpas_ap_wps_nfc_handover_sel(wpa_s, ndef);
2339         if (ret)
2340                 return ret;
2341         return wpas_wps_er_nfc_handover_sel(wpa_s, ndef, uuid);
2342 }
2343
2344
2345 int wpas_wps_nfc_rx_handover_req(struct wpa_supplicant *wpa_s,
2346                                  const struct wpabuf *data)
2347 {
2348         /* TODO */
2349         return -1;
2350 }
2351
2352
2353 int wpas_wps_nfc_rx_handover_sel(struct wpa_supplicant *wpa_s,
2354                                  const struct wpabuf *data)
2355 {
2356         struct wpabuf *wps;
2357         int ret;
2358
2359         wps = ndef_parse_wifi(data);
2360         if (wps == NULL)
2361                 return -1;
2362         wpa_printf(MSG_DEBUG, "WPS: Received application/vnd.wfa.wsc "
2363                    "payload from NFC connection handover");
2364         wpa_hexdump_buf_key(MSG_DEBUG, "WPS: NFC payload", wps);
2365         ret = wpas_wps_nfc_tag_process(wpa_s, wps);
2366         wpabuf_free(wps);
2367
2368         return ret;
2369 }
2370
2371
2372 int wpas_wps_nfc_report_handover(struct wpa_supplicant *wpa_s,
2373                                  const struct wpabuf *req,
2374                                  const struct wpabuf *sel)
2375 {
2376         wpa_printf(MSG_DEBUG, "NFC: WPS connection handover reported");
2377         wpa_hexdump_buf_key(MSG_DEBUG, "WPS: Carrier record in request", req);
2378         wpa_hexdump_buf_key(MSG_DEBUG, "WPS: Carrier record in select", sel);
2379         return wpas_wps_nfc_rx_handover_sel(wpa_s, sel);
2380 }
2381
2382 #endif /* CONFIG_WPS_NFC */
2383
2384
2385 static void wpas_wps_dump_ap_info(struct wpa_supplicant *wpa_s)
2386 {
2387         size_t i;
2388         struct os_reltime now;
2389
2390         if (wpa_debug_level > MSG_DEBUG)
2391                 return;
2392
2393         if (wpa_s->wps_ap == NULL)
2394                 return;
2395
2396         os_get_reltime(&now);
2397
2398         for (i = 0; i < wpa_s->num_wps_ap; i++) {
2399                 struct wps_ap_info *ap = &wpa_s->wps_ap[i];
2400                 struct wpa_blacklist *e = wpa_blacklist_get(wpa_s, ap->bssid);
2401
2402                 wpa_printf(MSG_DEBUG, "WPS: AP[%d] " MACSTR " type=%d "
2403                            "tries=%d last_attempt=%d sec ago blacklist=%d",
2404                            (int) i, MAC2STR(ap->bssid), ap->type, ap->tries,
2405                            ap->last_attempt.sec > 0 ?
2406                            (int) now.sec - (int) ap->last_attempt.sec : -1,
2407                            e ? e->count : 0);
2408         }
2409 }
2410
2411
2412 static struct wps_ap_info * wpas_wps_get_ap_info(struct wpa_supplicant *wpa_s,
2413                                                  const u8 *bssid)
2414 {
2415         size_t i;
2416
2417         if (wpa_s->wps_ap == NULL)
2418                 return NULL;
2419
2420         for (i = 0; i < wpa_s->num_wps_ap; i++) {
2421                 struct wps_ap_info *ap = &wpa_s->wps_ap[i];
2422                 if (os_memcmp(ap->bssid, bssid, ETH_ALEN) == 0)
2423                         return ap;
2424         }
2425
2426         return NULL;
2427 }
2428
2429
2430 static void wpas_wps_update_ap_info_bss(struct wpa_supplicant *wpa_s,
2431                                         struct wpa_scan_res *res)
2432 {
2433         struct wpabuf *wps;
2434         enum wps_ap_info_type type;
2435         struct wps_ap_info *ap;
2436         int r;
2437
2438         if (wpa_scan_get_vendor_ie(res, WPS_IE_VENDOR_TYPE) == NULL)
2439                 return;
2440
2441         wps = wpa_scan_get_vendor_ie_multi(res, WPS_IE_VENDOR_TYPE);
2442         if (wps == NULL)
2443                 return;
2444
2445         r = wps_is_addr_authorized(wps, wpa_s->own_addr, 1);
2446         if (r == 2)
2447                 type = WPS_AP_SEL_REG_OUR;
2448         else if (r == 1)
2449                 type = WPS_AP_SEL_REG;
2450         else
2451                 type = WPS_AP_NOT_SEL_REG;
2452
2453         wpabuf_free(wps);
2454
2455         ap = wpas_wps_get_ap_info(wpa_s, res->bssid);
2456         if (ap) {
2457                 if (ap->type != type) {
2458                         wpa_printf(MSG_DEBUG, "WPS: AP " MACSTR
2459                                    " changed type %d -> %d",
2460                                    MAC2STR(res->bssid), ap->type, type);
2461                         ap->type = type;
2462                         if (type != WPS_AP_NOT_SEL_REG)
2463                                 wpa_blacklist_del(wpa_s, ap->bssid);
2464                 }
2465                 return;
2466         }
2467
2468         ap = os_realloc_array(wpa_s->wps_ap, wpa_s->num_wps_ap + 1,
2469                               sizeof(struct wps_ap_info));
2470         if (ap == NULL)
2471                 return;
2472
2473         wpa_s->wps_ap = ap;
2474         ap = &wpa_s->wps_ap[wpa_s->num_wps_ap];
2475         wpa_s->num_wps_ap++;
2476
2477         os_memset(ap, 0, sizeof(*ap));
2478         os_memcpy(ap->bssid, res->bssid, ETH_ALEN);
2479         ap->type = type;
2480         wpa_printf(MSG_DEBUG, "WPS: AP " MACSTR " type %d added",
2481                    MAC2STR(ap->bssid), ap->type);
2482 }
2483
2484
2485 void wpas_wps_update_ap_info(struct wpa_supplicant *wpa_s,
2486                              struct wpa_scan_results *scan_res)
2487 {
2488         size_t i;
2489
2490         for (i = 0; i < scan_res->num; i++)
2491                 wpas_wps_update_ap_info_bss(wpa_s, scan_res->res[i]);
2492
2493         wpas_wps_dump_ap_info(wpa_s);
2494 }
2495
2496
2497 void wpas_wps_notify_assoc(struct wpa_supplicant *wpa_s, const u8 *bssid)
2498 {
2499         struct wps_ap_info *ap;
2500
2501         wpa_s->after_wps = 0;
2502
2503         if (!wpa_s->wps_ap_iter)
2504                 return;
2505         ap = wpas_wps_get_ap_info(wpa_s, bssid);
2506         if (ap == NULL)
2507                 return;
2508         ap->tries++;
2509         os_get_reltime(&ap->last_attempt);
2510 }