wpa_supplicant/wps_supplicant.c

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