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
 887         prev_current = wpa_s->current_ssid;
 888
 889         /* Enable the networks disabled during wpas_wps_reassoc */
 890         wpas_wps_reenable_networks(wpa_s);
 891
 892         eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
 893
 894         /* Remove any existing WPS network from configuration */
 895         ssid = wpa_s->conf->ssid;
 896         while (ssid) {
 897                 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
 898                         if (ssid == wpa_s->current_ssid) {
 899                                 wpa_supplicant_deauthenticate(
 900                                         wpa_s, WLAN_REASON_DEAUTH_LEAVING);
 901                         }
 902                         id = ssid->id;
 903                         remove_ssid = ssid;
 904                 } else
 905                         id = -1;
 906                 ssid = ssid->next;
 907                 if (id >= 0) {
 908                         if (prev_current == remove_ssid) {
 909                                 wpa_sm_set_config(wpa_s->wpa, NULL);
 910                                 eapol_sm_notify_config(wpa_s->eapol, NULL,
 911                                                        NULL);
 912                         }
 913                         wpas_notify_network_removed(wpa_s, remove_ssid);
 914                         wpa_config_remove_network(wpa_s->conf, id);
 915                 }
 916         }
 917
 918         wpas_wps_clear_ap_info(wpa_s);
 919 }
 920
 921
 922 static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx)
 923 {
 924         struct wpa_supplicant *wpa_s = eloop_ctx;
 925         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_TIMEOUT "Requested operation timed "
 926                 "out");
 927         wpas_clear_wps(wpa_s);
 928 }
 929
 930
 931 static struct wpa_ssid * wpas_wps_add_network(struct wpa_supplicant *wpa_s,
 932                                               int registrar, const u8 *bssid)
 933 {
 934         struct wpa_ssid *ssid;
 935
 936         ssid = wpa_config_add_network(wpa_s->conf);
 937         if (ssid == NULL)
 938                 return NULL;
 939         wpas_notify_network_added(wpa_s, ssid);
 940         wpa_config_set_network_defaults(ssid);
 941         ssid->temporary = 1;
 942         if (wpa_config_set(ssid, "key_mgmt", "WPS", 0) < 0 ||
 943             wpa_config_set(ssid, "eap", "WSC", 0) < 0 ||
 944             wpa_config_set(ssid, "identity", registrar ?
 945                            "\"" WSC_ID_REGISTRAR "\"" :
 946                            "\"" WSC_ID_ENROLLEE "\"", 0) < 0) {
 947                 wpas_notify_network_removed(wpa_s, ssid);
 948                 wpa_config_remove_network(wpa_s->conf, ssid->id);
 949                 return NULL;
 950         }
 951
 952         if (bssid) {
 953 #ifndef CONFIG_P2P
 954                 struct wpa_bss *bss;
 955                 int count = 0;
 956 #endif /* CONFIG_P2P */
 957
 958                 os_memcpy(ssid->bssid, bssid, ETH_ALEN);
 959                 ssid->bssid_set = 1;
 960
 961                 /*
 962                  * Note: With P2P, the SSID may change at the time the WPS
 963                  * provisioning is started, so better not filter the AP based
 964                  * on the current SSID in the scan results.
 965                  */
 966 #ifndef CONFIG_P2P
 967                 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
 968                         if (os_memcmp(bssid, bss->bssid, ETH_ALEN) != 0)
 969                                 continue;
 970
 971                         os_free(ssid->ssid);
 972                         ssid->ssid = os_malloc(bss->ssid_len);
 973                         if (ssid->ssid == NULL)
 974                                 break;
 975                         os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
 976                         ssid->ssid_len = bss->ssid_len;
 977                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Picked SSID from "
 978                                           "scan results",
 979                                           ssid->ssid, ssid->ssid_len);
 980                         count++;
 981                 }
 982
 983                 if (count > 1) {
 984                         wpa_printf(MSG_DEBUG, "WPS: More than one SSID found "
 985                                    "for the AP; use wildcard");
 986                         os_free(ssid->ssid);
 987                         ssid->ssid = NULL;
 988                         ssid->ssid_len = 0;
 989                 }
 990 #endif /* CONFIG_P2P */
 991         }
 992
 993         return ssid;
 994 }
 995
 996
 997 static void wpas_wps_temp_disable(struct wpa_supplicant *wpa_s,
 998                                   struct wpa_ssid *selected)
 999 {
1000         struct wpa_ssid *ssid;
1001
1002         if (wpa_s->current_ssid)
1003                 wpa_supplicant_deauthenticate(
1004                         wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1005
1006         /* Mark all other networks disabled and trigger reassociation */
1007         ssid = wpa_s->conf->ssid;
1008         while (ssid) {
1009                 int was_disabled = ssid->disabled;
1010                 ssid->disabled_for_connect = 0;
1011                 /*
1012                  * In case the network object corresponds to a persistent group
1013                  * then do not send out network disabled signal. In addition,
1014                  * do not change disabled status of persistent network objects
1015                  * from 2 to 1 should we connect to another network.
1016                  */
1017                 if (was_disabled != 2) {
1018                         ssid->disabled = ssid != selected;
1019                         if (was_disabled != ssid->disabled) {
1020                                 if (ssid->disabled)
1021                                         ssid->disabled_for_connect = 1;
1022                                 wpas_notify_network_enabled_changed(wpa_s,
1023                                                                     ssid);
1024                         }
1025                 }
1026                 ssid = ssid->next;
1027         }
1028 }
1029
1030
1031 static void wpas_wps_reassoc(struct wpa_supplicant *wpa_s,
1032                              struct wpa_ssid *selected, const u8 *bssid)
1033 {
1034         struct wpa_bss *bss;
1035
1036         wpa_s->after_wps = 0;
1037         wpa_s->known_wps_freq = 0;
1038         if (bssid) {
1039                 bss = wpa_bss_get_bssid_latest(wpa_s, bssid);
1040                 if (bss && bss->freq > 0) {
1041                         wpa_s->known_wps_freq = 1;
1042                         wpa_s->wps_freq = bss->freq;
1043                 }
1044         }
1045
1046         wpas_wps_temp_disable(wpa_s, selected);
1047
1048         wpa_s->disconnected = 0;
1049         wpa_s->reassociate = 1;
1050         wpa_s->scan_runs = 0;
1051         wpa_s->normal_scans = 0;
1052         wpa_s->wps_success = 0;
1053         wpa_s->blacklist_cleared = 0;
1054         wpa_supplicant_req_scan(wpa_s, 0, 0);
1055 }
1056
1057
1058 int wpas_wps_start_pbc(struct wpa_supplicant *wpa_s, const u8 *bssid,
1059                        int p2p_group)
1060 {
1061         struct wpa_ssid *ssid;
1062         wpas_clear_wps(wpa_s);
1063         ssid = wpas_wps_add_network(wpa_s, 0, bssid);
1064         if (ssid == NULL)
1065                 return -1;
1066         ssid->temporary = 1;
1067         ssid->p2p_group = p2p_group;
1068 #ifdef CONFIG_P2P
1069         if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) {
1070                 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1);
1071                 if (ssid->ssid) {
1072                         ssid->ssid_len = wpa_s->go_params->ssid_len;
1073                         os_memcpy(ssid->ssid, wpa_s->go_params->ssid,
1074                                   ssid->ssid_len);
1075                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP "
1076                                           "SSID", ssid->ssid, ssid->ssid_len);
1077                 }
1078         }
1079 #endif /* CONFIG_P2P */
1080         if (wpa_config_set(ssid, "phase1", "\"pbc=1\"", 0) < 0)
1081                 return -1;
1082         if (wpa_s->wps_fragment_size)
1083                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
1084         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
1085                                wpa_s, NULL);
1086         wpas_wps_reassoc(wpa_s, ssid, bssid);
1087         return 0;
1088 }
1089
1090
1091 int wpas_wps_start_pin(struct wpa_supplicant *wpa_s, const u8 *bssid,
1092                        const char *pin, int p2p_group, u16 dev_pw_id)
1093 {
1094         struct wpa_ssid *ssid;
1095         char val[128];
1096         unsigned int rpin = 0;
1097
1098         wpas_clear_wps(wpa_s);
1099         ssid = wpas_wps_add_network(wpa_s, 0, bssid);
1100         if (ssid == NULL)
1101                 return -1;
1102         ssid->temporary = 1;
1103         ssid->p2p_group = p2p_group;
1104 #ifdef CONFIG_P2P
1105         if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) {
1106                 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1);
1107                 if (ssid->ssid) {
1108                         ssid->ssid_len = wpa_s->go_params->ssid_len;
1109                         os_memcpy(ssid->ssid, wpa_s->go_params->ssid,
1110                                   ssid->ssid_len);
1111                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP "
1112                                           "SSID", ssid->ssid, ssid->ssid_len);
1113                 }
1114         }
1115 #endif /* CONFIG_P2P */
1116         if (pin)
1117                 os_snprintf(val, sizeof(val), "\"pin=%s dev_pw_id=%u\"",
1118                             pin, dev_pw_id);
1119         else {
1120                 rpin = wps_generate_pin();
1121                 os_snprintf(val, sizeof(val), "\"pin=%08d dev_pw_id=%u\"",
1122                             rpin, dev_pw_id);
1123         }
1124         if (wpa_config_set(ssid, "phase1", val, 0) < 0)
1125                 return -1;
1126         if (wpa_s->wps_fragment_size)
1127                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
1128         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
1129                                wpa_s, NULL);
1130         wpa_s->wps_ap_iter = 1;
1131         wpas_wps_reassoc(wpa_s, ssid, bssid);
1132         return rpin;
1133 }
1134
1135
1136 /* Cancel the wps pbc/pin requests */
1137 int wpas_wps_cancel(struct wpa_supplicant *wpa_s)
1138 {
1139 #ifdef CONFIG_AP
1140         if (wpa_s->ap_iface) {
1141                 wpa_printf(MSG_DEBUG, "WPS: Cancelling in AP mode");
1142                 return wpa_supplicant_ap_wps_cancel(wpa_s);
1143         }
1144 #endif /* CONFIG_AP */
1145
1146         if (wpa_s->wpa_state == WPA_SCANNING ||
1147             wpa_s->wpa_state == WPA_DISCONNECTED) {
1148                 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - cancel scan");
1149                 wpa_supplicant_cancel_scan(wpa_s);
1150                 wpas_clear_wps(wpa_s);
1151         } else if (wpa_s->wpa_state >= WPA_ASSOCIATED) {
1152                 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - "
1153                            "deauthenticate");
1154                 wpa_supplicant_deauthenticate(wpa_s,
1155                                               WLAN_REASON_DEAUTH_LEAVING);
1156                 wpas_clear_wps(wpa_s);
1157         } else {
1158                 wpas_wps_reenable_networks(wpa_s);
1159                 wpas_wps_clear_ap_info(wpa_s);
1160         }
1161
1162         wpa_s->after_wps = 0;
1163
1164         return 0;
1165 }
1166
1167
1168 int wpas_wps_start_reg(struct wpa_supplicant *wpa_s, const u8 *bssid,
1169                        const char *pin, struct wps_new_ap_settings *settings)
1170 {
1171         struct wpa_ssid *ssid;
1172         char val[200];
1173         char *pos, *end;
1174         int res;
1175
1176         if (!pin)
1177                 return -1;
1178         wpas_clear_wps(wpa_s);
1179         ssid = wpas_wps_add_network(wpa_s, 1, bssid);
1180         if (ssid == NULL)
1181                 return -1;
1182         ssid->temporary = 1;
1183         pos = val;
1184         end = pos + sizeof(val);
1185         res = os_snprintf(pos, end - pos, "\"pin=%s", pin);
1186         if (res < 0 || res >= end - pos)
1187                 return -1;
1188         pos += res;
1189         if (settings) {
1190                 res = os_snprintf(pos, end - pos, " new_ssid=%s new_auth=%s "
1191                                   "new_encr=%s new_key=%s",
1192                                   settings->ssid_hex, settings->auth,
1193                                   settings->encr, settings->key_hex);
1194                 if (res < 0 || res >= end - pos)
1195                         return -1;
1196                 pos += res;
1197         }
1198         res = os_snprintf(pos, end - pos, "\"");
1199         if (res < 0 || res >= end - pos)
1200                 return -1;
1201         if (wpa_config_set(ssid, "phase1", val, 0) < 0)
1202                 return -1;
1203         if (wpa_s->wps_fragment_size)
1204                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
1205         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
1206                                wpa_s, NULL);
1207         wpas_wps_reassoc(wpa_s, ssid, bssid);
1208         return 0;
1209 }
1210
1211
1212 static int wpas_wps_new_psk_cb(void *ctx, const u8 *mac_addr,
1213                                const u8 *p2p_dev_addr, const u8 *psk,
1214                                size_t psk_len)
1215 {
1216         if (is_zero_ether_addr(p2p_dev_addr)) {
1217                 wpa_printf(MSG_DEBUG,
1218                            "Received new WPA/WPA2-PSK from WPS for STA " MACSTR,
1219                            MAC2STR(mac_addr));
1220         } else {
1221                 wpa_printf(MSG_DEBUG,
1222                            "Received new WPA/WPA2-PSK from WPS for STA " MACSTR
1223                            " P2P Device Addr " MACSTR,
1224                            MAC2STR(mac_addr), MAC2STR(p2p_dev_addr));
1225         }
1226         wpa_hexdump_key(MSG_DEBUG, "Per-device PSK", psk, psk_len);
1227
1228         /* TODO */
1229
1230         return 0;
1231 }
1232
1233
1234 static void wpas_wps_pin_needed_cb(void *ctx, const u8 *uuid_e,
1235                                    const struct wps_device_data *dev)
1236 {
1237         char uuid[40], txt[400];
1238         int len;
1239         char devtype[WPS_DEV_TYPE_BUFSIZE];
1240         if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
1241                 return;
1242         wpa_printf(MSG_DEBUG, "WPS: PIN needed for UUID-E %s", uuid);
1243         len = os_snprintf(txt, sizeof(txt), "WPS-EVENT-PIN-NEEDED %s " MACSTR
1244                           " [%s|%s|%s|%s|%s|%s]",
1245                           uuid, MAC2STR(dev->mac_addr), dev->device_name,
1246                           dev->manufacturer, dev->model_name,
1247                           dev->model_number, dev->serial_number,
1248                           wps_dev_type_bin2str(dev->pri_dev_type, devtype,
1249                                                sizeof(devtype)));
1250         if (len > 0 && len < (int) sizeof(txt))
1251                 wpa_printf(MSG_INFO, "%s", txt);
1252 }
1253
1254
1255 static void wpas_wps_set_sel_reg_cb(void *ctx, int sel_reg, u16 dev_passwd_id,
1256                                     u16 sel_reg_config_methods)
1257 {
1258 #ifdef CONFIG_WPS_ER
1259         struct wpa_supplicant *wpa_s = ctx;
1260
1261         if (wpa_s->wps_er == NULL)
1262                 return;
1263         wpa_printf(MSG_DEBUG, "WPS ER: SetSelectedRegistrar - sel_reg=%d "
1264                    "dev_password_id=%u sel_reg_config_methods=0x%x",
1265                    sel_reg, dev_passwd_id, sel_reg_config_methods);
1266         wps_er_set_sel_reg(wpa_s->wps_er, sel_reg, dev_passwd_id,
1267                            sel_reg_config_methods);
1268 #endif /* CONFIG_WPS_ER */
1269 }
1270
1271
1272 static u16 wps_fix_config_methods(u16 config_methods)
1273 {
1274 #ifdef CONFIG_WPS2
1275         if ((config_methods &
1276              (WPS_CONFIG_DISPLAY | WPS_CONFIG_VIRT_DISPLAY |
1277               WPS_CONFIG_PHY_DISPLAY)) == WPS_CONFIG_DISPLAY) {
1278                 wpa_printf(MSG_INFO, "WPS: Converting display to "
1279                            "virtual_display for WPS 2.0 compliance");
1280                 config_methods |= WPS_CONFIG_VIRT_DISPLAY;
1281         }
1282         if ((config_methods &
1283              (WPS_CONFIG_PUSHBUTTON | WPS_CONFIG_VIRT_PUSHBUTTON |
1284               WPS_CONFIG_PHY_PUSHBUTTON)) == WPS_CONFIG_PUSHBUTTON) {
1285                 wpa_printf(MSG_INFO, "WPS: Converting push_button to "
1286                            "virtual_push_button for WPS 2.0 compliance");
1287                 config_methods |= WPS_CONFIG_VIRT_PUSHBUTTON;
1288         }
1289 #endif /* CONFIG_WPS2 */
1290
1291         return config_methods;
1292 }
1293
1294
1295 static void wpas_wps_set_uuid(struct wpa_supplicant *wpa_s,
1296                               struct wps_context *wps)
1297 {
1298         wpa_printf(MSG_DEBUG, "WPS: Set UUID for interface %s", wpa_s->ifname);
1299         if (is_nil_uuid(wpa_s->conf->uuid)) {
1300                 struct wpa_supplicant *first;
1301                 first = wpa_s->global->ifaces;
1302                 while (first && first->next)
1303                         first = first->next;
1304                 if (first && first != wpa_s) {
1305                         if (wps != wpa_s->global->ifaces->wps)
1306                                 os_memcpy(wps->uuid,
1307                                           wpa_s->global->ifaces->wps->uuid,
1308                                           WPS_UUID_LEN);
1309                         wpa_hexdump(MSG_DEBUG, "WPS: UUID from the first "
1310                                     "interface", wps->uuid, WPS_UUID_LEN);
1311                 } else {
1312                         uuid_gen_mac_addr(wpa_s->own_addr, wps->uuid);
1313                         wpa_hexdump(MSG_DEBUG, "WPS: UUID based on MAC "
1314                                     "address", wps->uuid, WPS_UUID_LEN);
1315                 }
1316         } else {
1317                 os_memcpy(wps->uuid, wpa_s->conf->uuid, WPS_UUID_LEN);
1318                 wpa_hexdump(MSG_DEBUG, "WPS: UUID based on configuration",
1319                             wps->uuid, WPS_UUID_LEN);
1320         }
1321 }
1322
1323
1324 static void wpas_wps_set_vendor_ext_m1(struct wpa_supplicant *wpa_s,
1325                                        struct wps_context *wps)
1326 {
1327         wpabuf_free(wps->dev.vendor_ext_m1);
1328         wps->dev.vendor_ext_m1 = NULL;
1329
1330         if (wpa_s->conf->wps_vendor_ext_m1) {
1331                 wps->dev.vendor_ext_m1 =
1332                         wpabuf_dup(wpa_s->conf->wps_vendor_ext_m1);
1333                 if (!wps->dev.vendor_ext_m1) {
1334                         wpa_printf(MSG_ERROR, "WPS: Cannot "
1335                                    "allocate memory for vendor_ext_m1");
1336                 }
1337         }
1338 }
1339
1340
1341 int wpas_wps_init(struct wpa_supplicant *wpa_s)
1342 {
1343         struct wps_context *wps;
1344         struct wps_registrar_config rcfg;
1345         struct hostapd_hw_modes *modes;
1346         u16 m;
1347
1348         wps = os_zalloc(sizeof(*wps));
1349         if (wps == NULL)
1350                 return -1;
1351
1352         wps->cred_cb = wpa_supplicant_wps_cred;
1353         wps->event_cb = wpa_supplicant_wps_event;
1354         wps->rf_band_cb = wpa_supplicant_wps_rf_band;
1355         wps->cb_ctx = wpa_s;
1356
1357         wps->dev.device_name = wpa_s->conf->device_name;
1358         wps->dev.manufacturer = wpa_s->conf->manufacturer;
1359         wps->dev.model_name = wpa_s->conf->model_name;
1360         wps->dev.model_number = wpa_s->conf->model_number;
1361         wps->dev.serial_number = wpa_s->conf->serial_number;
1362         wps->config_methods =
1363                 wps_config_methods_str2bin(wpa_s->conf->config_methods);
1364         if ((wps->config_methods & (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) ==
1365             (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
1366                 wpa_printf(MSG_ERROR, "WPS: Both Label and Display config "
1367                            "methods are not allowed at the same time");
1368                 os_free(wps);
1369                 return -1;
1370         }
1371         wps->config_methods = wps_fix_config_methods(wps->config_methods);
1372         wps->dev.config_methods = wps->config_methods;
1373         os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type,
1374                   WPS_DEV_TYPE_LEN);
1375
1376         wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
1377         os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type,
1378                   WPS_DEV_TYPE_LEN * wps->dev.num_sec_dev_types);
1379
1380         wpas_wps_set_vendor_ext_m1(wpa_s, wps);
1381
1382         wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
1383         modes = wpa_s->hw.modes;
1384         if (modes) {
1385                 for (m = 0; m < wpa_s->hw.num_modes; m++) {
1386                         if (modes[m].mode == HOSTAPD_MODE_IEEE80211B ||
1387                             modes[m].mode == HOSTAPD_MODE_IEEE80211G)
1388                                 wps->dev.rf_bands |= WPS_RF_24GHZ;
1389                         else if (modes[m].mode == HOSTAPD_MODE_IEEE80211A)
1390                                 wps->dev.rf_bands |= WPS_RF_50GHZ;
1391                 }
1392         }
1393         if (wps->dev.rf_bands == 0) {
1394                 /*
1395                  * Default to claiming support for both bands if the driver
1396                  * does not provide support for fetching supported bands.
1397                  */
1398                 wps->dev.rf_bands = WPS_RF_24GHZ | WPS_RF_50GHZ;
1399         }
1400         os_memcpy(wps->dev.mac_addr, wpa_s->own_addr, ETH_ALEN);
1401         wpas_wps_set_uuid(wpa_s, wps);
1402
1403         wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK;
1404         wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP;
1405
1406         os_memset(&rcfg, 0, sizeof(rcfg));
1407         rcfg.new_psk_cb = wpas_wps_new_psk_cb;
1408         rcfg.pin_needed_cb = wpas_wps_pin_needed_cb;
1409         rcfg.set_sel_reg_cb = wpas_wps_set_sel_reg_cb;
1410         rcfg.cb_ctx = wpa_s;
1411
1412         wps->registrar = wps_registrar_init(wps, &rcfg);
1413         if (wps->registrar == NULL) {
1414                 wpa_printf(MSG_DEBUG, "Failed to initialize WPS Registrar");
1415                 os_free(wps);
1416                 return -1;
1417         }
1418
1419         wpa_s->wps = wps;
1420
1421         return 0;
1422 }
1423
1424
1425 void wpas_wps_deinit(struct wpa_supplicant *wpa_s)
1426 {
1427         eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
1428         eloop_cancel_timeout(wpas_wps_clear_timeout, wpa_s, NULL);
1429         eloop_cancel_timeout(wpas_wps_reenable_networks_cb, wpa_s, NULL);
1430         wpas_wps_clear_ap_info(wpa_s);
1431
1432         if (wpa_s->wps == NULL)
1433                 return;
1434
1435 #ifdef CONFIG_WPS_ER
1436         wps_er_deinit(wpa_s->wps_er, NULL, NULL);
1437         wpa_s->wps_er = NULL;
1438 #endif /* CONFIG_WPS_ER */
1439
1440         wps_registrar_deinit(wpa_s->wps->registrar);
1441         wpabuf_free(wpa_s->wps->dh_pubkey);
1442         wpabuf_free(wpa_s->wps->dh_privkey);
1443         wpabuf_free(wpa_s->wps->dev.vendor_ext_m1);
1444         os_free(wpa_s->wps->network_key);
1445         os_free(wpa_s->wps);
1446         wpa_s->wps = NULL;
1447 }
1448
1449
1450 int wpas_wps_ssid_bss_match(struct wpa_supplicant *wpa_s,
1451                             struct wpa_ssid *ssid, struct wpa_bss *bss)
1452 {
1453         struct wpabuf *wps_ie;
1454
1455         if (!(ssid->key_mgmt & WPA_KEY_MGMT_WPS))
1456                 return -1;
1457
1458         wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1459         if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
1460                 if (!wps_ie) {
1461                         wpa_printf(MSG_DEBUG, "   skip - non-WPS AP");
1462                         return 0;
1463                 }
1464
1465                 if (!wps_is_selected_pbc_registrar(wps_ie)) {
1466                         wpa_printf(MSG_DEBUG, "   skip - WPS AP "
1467                                    "without active PBC Registrar");
1468                         wpabuf_free(wps_ie);
1469                         return 0;
1470                 }
1471
1472                 /* TODO: overlap detection */
1473                 wpa_printf(MSG_DEBUG, "   selected based on WPS IE "
1474                            "(Active PBC)");
1475                 wpabuf_free(wps_ie);
1476                 return 1;
1477         }
1478
1479         if (eap_is_wps_pin_enrollee(&ssid->eap)) {
1480                 if (!wps_ie) {
1481                         wpa_printf(MSG_DEBUG, "   skip - non-WPS AP");
1482                         return 0;
1483                 }
1484
1485                 /*
1486                  * Start with WPS APs that advertise our address as an
1487                  * authorized MAC (v2.0) or active PIN Registrar (v1.0) and
1488                  * allow any WPS AP after couple of scans since some APs do not
1489                  * set Selected Registrar attribute properly when using
1490                  * external Registrar.
1491                  */
1492                 if (!wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1)) {
1493                         if (wpa_s->scan_runs < WPS_PIN_SCAN_IGNORE_SEL_REG) {
1494                                 wpa_printf(MSG_DEBUG, "   skip - WPS AP "
1495                                            "without active PIN Registrar");
1496                                 wpabuf_free(wps_ie);
1497                                 return 0;
1498                         }
1499                         wpa_printf(MSG_DEBUG, "   selected based on WPS IE");
1500                 } else {
1501                         wpa_printf(MSG_DEBUG, "   selected based on WPS IE "
1502                                    "(Authorized MAC or Active PIN)");
1503                 }
1504                 wpabuf_free(wps_ie);
1505                 return 1;
1506         }
1507
1508         if (wps_ie) {
1509                 wpa_printf(MSG_DEBUG, "   selected based on WPS IE");
1510                 wpabuf_free(wps_ie);
1511                 return 1;
1512         }
1513
1514         return -1;
1515 }
1516
1517
1518 int wpas_wps_ssid_wildcard_ok(struct wpa_supplicant *wpa_s,
1519                               struct wpa_ssid *ssid,
1520                               struct wpa_bss *bss)
1521 {
1522         struct wpabuf *wps_ie = NULL;
1523         int ret = 0;
1524
1525         if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
1526                 wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1527                 if (wps_ie && wps_is_selected_pbc_registrar(wps_ie)) {
1528                         /* allow wildcard SSID for WPS PBC */
1529                         ret = 1;
1530                 }
1531         } else if (eap_is_wps_pin_enrollee(&ssid->eap)) {
1532                 wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1533                 if (wps_ie &&
1534                     (wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1) ||
1535                      wpa_s->scan_runs >= WPS_PIN_SCAN_IGNORE_SEL_REG)) {
1536                         /* allow wildcard SSID for WPS PIN */
1537                         ret = 1;
1538                 }
1539         }
1540
1541         if (!ret && ssid->bssid_set &&
1542             os_memcmp(ssid->bssid, bss->bssid, ETH_ALEN) == 0) {
1543                 /* allow wildcard SSID due to hardcoded BSSID match */
1544                 ret = 1;
1545         }
1546
1547 #ifdef CONFIG_WPS_STRICT
1548         if (wps_ie) {
1549                 if (wps_validate_beacon_probe_resp(wps_ie, bss->beacon_ie_len >
1550                                                    0, bss->bssid) < 0)
1551                         ret = 0;
1552                 if (bss->beacon_ie_len) {
1553                         struct wpabuf *bcn_wps;
1554                         bcn_wps = wpa_bss_get_vendor_ie_multi_beacon(
1555                                 bss, WPS_IE_VENDOR_TYPE);
1556                         if (bcn_wps == NULL) {
1557                                 wpa_printf(MSG_DEBUG, "WPS: Mandatory WPS IE "
1558                                            "missing from AP Beacon");
1559                                 ret = 0;
1560                         } else {
1561                                 if (wps_validate_beacon(wps_ie) < 0)
1562                                         ret = 0;
1563                                 wpabuf_free(bcn_wps);
1564                         }
1565                 }
1566         }
1567 #endif /* CONFIG_WPS_STRICT */
1568
1569         wpabuf_free(wps_ie);
1570
1571         return ret;
1572 }
1573
1574
1575 int wpas_wps_scan_pbc_overlap(struct wpa_supplicant *wpa_s,
1576                               struct wpa_bss *selected, struct wpa_ssid *ssid)
1577 {
1578         const u8 *sel_uuid, *uuid;
1579         struct wpabuf *wps_ie;
1580         int ret = 0;
1581         struct wpa_bss *bss;
1582
1583         if (!eap_is_wps_pbc_enrollee(&ssid->eap))
1584                 return 0;
1585
1586         wpa_printf(MSG_DEBUG, "WPS: Check whether PBC session overlap is "
1587                    "present in scan results; selected BSSID " MACSTR,
1588                    MAC2STR(selected->bssid));
1589
1590         /* Make sure that only one AP is in active PBC mode */
1591         wps_ie = wpa_bss_get_vendor_ie_multi(selected, WPS_IE_VENDOR_TYPE);
1592         if (wps_ie) {
1593                 sel_uuid = wps_get_uuid_e(wps_ie);
1594                 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the selected BSS",
1595                             sel_uuid, UUID_LEN);
1596         } else {
1597                 wpa_printf(MSG_DEBUG, "WPS: Selected BSS does not include "
1598                            "WPS IE?!");
1599                 sel_uuid = NULL;
1600         }
1601
1602         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1603                 struct wpabuf *ie;
1604                 if (bss == selected)
1605                         continue;
1606                 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1607                 if (!ie)
1608                         continue;
1609                 if (!wps_is_selected_pbc_registrar(ie)) {
1610                         wpabuf_free(ie);
1611                         continue;
1612                 }
1613                 wpa_printf(MSG_DEBUG, "WPS: Another BSS in active PBC mode: "
1614                            MACSTR, MAC2STR(bss->bssid));
1615                 uuid = wps_get_uuid_e(ie);
1616                 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the other BSS",
1617                             uuid, UUID_LEN);
1618                 if (sel_uuid == NULL || uuid == NULL ||
1619                     os_memcmp(sel_uuid, uuid, UUID_LEN) != 0) {
1620                         ret = 1; /* PBC overlap */
1621                         wpa_msg(wpa_s, MSG_INFO, "WPS: PBC overlap detected: "
1622                                 MACSTR " and " MACSTR,
1623                                 MAC2STR(selected->bssid),
1624                                 MAC2STR(bss->bssid));
1625                         wpabuf_free(ie);
1626                         break;
1627                 }
1628
1629                 /* TODO: verify that this is reasonable dual-band situation */
1630
1631                 wpabuf_free(ie);
1632         }
1633
1634         wpabuf_free(wps_ie);
1635
1636         return ret;
1637 }
1638
1639
1640 void wpas_wps_notify_scan_results(struct wpa_supplicant *wpa_s)
1641 {
1642         struct wpa_bss *bss;
1643         unsigned int pbc = 0, auth = 0, pin = 0, wps = 0;
1644
1645         if (wpa_s->disconnected || wpa_s->wpa_state >= WPA_ASSOCIATED)
1646                 return;
1647
1648         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1649                 struct wpabuf *ie;
1650                 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1651                 if (!ie)
1652                         continue;
1653                 if (wps_is_selected_pbc_registrar(ie))
1654                         pbc++;
1655                 else if (wps_is_addr_authorized(ie, wpa_s->own_addr, 0))
1656                         auth++;
1657                 else if (wps_is_selected_pin_registrar(ie))
1658                         pin++;
1659                 else
1660                         wps++;
1661                 wpabuf_free(ie);
1662         }
1663
1664         if (pbc)
1665                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PBC);
1666         else if (auth)
1667                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_AUTH);
1668         else if (pin)
1669                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PIN);
1670         else if (wps)
1671                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE);
1672 }
1673
1674
1675 int wpas_wps_searching(struct wpa_supplicant *wpa_s)
1676 {
1677         struct wpa_ssid *ssid;
1678
1679         for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1680                 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && !ssid->disabled)
1681                         return 1;
1682         }
1683
1684         return 0;
1685 }
1686
1687
1688 int wpas_wps_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
1689                               char *end)
1690 {
1691         struct wpabuf *wps_ie;
1692         int ret;
1693
1694         wps_ie = ieee802_11_vendor_ie_concat(ies, ies_len, WPS_DEV_OUI_WFA);
1695         if (wps_ie == NULL)
1696                 return 0;
1697
1698         ret = wps_attr_text(wps_ie, buf, end);
1699         wpabuf_free(wps_ie);
1700         return ret;
1701 }
1702
1703
1704 int wpas_wps_er_start(struct wpa_supplicant *wpa_s, const char *filter)
1705 {
1706 #ifdef CONFIG_WPS_ER
1707         if (wpa_s->wps_er) {
1708                 wps_er_refresh(wpa_s->wps_er);
1709                 return 0;
1710         }
1711         wpa_s->wps_er = wps_er_init(wpa_s->wps, wpa_s->ifname, filter);
1712         if (wpa_s->wps_er == NULL)
1713                 return -1;
1714         return 0;
1715 #else /* CONFIG_WPS_ER */
1716         return 0;
1717 #endif /* CONFIG_WPS_ER */
1718 }
1719
1720
1721 int wpas_wps_er_stop(struct wpa_supplicant *wpa_s)
1722 {
1723 #ifdef CONFIG_WPS_ER
1724         wps_er_deinit(wpa_s->wps_er, NULL, NULL);
1725         wpa_s->wps_er = NULL;
1726 #endif /* CONFIG_WPS_ER */
1727         return 0;
1728 }
1729
1730
1731 #ifdef CONFIG_WPS_ER
1732 int wpas_wps_er_add_pin(struct wpa_supplicant *wpa_s, const u8 *addr,
1733                         const char *uuid, const char *pin)
1734 {
1735         u8 u[UUID_LEN];
1736         const u8 *use_uuid = NULL;
1737         u8 addr_buf[ETH_ALEN];
1738
1739         if (os_strcmp(uuid, "any") == 0) {
1740         } else if (uuid_str2bin(uuid, u) == 0) {
1741                 use_uuid = u;
1742         } else if (hwaddr_aton(uuid, addr_buf) == 0) {
1743                 use_uuid = wps_er_get_sta_uuid(wpa_s->wps_er, addr_buf);
1744                 if (use_uuid == NULL)
1745                         return -1;
1746         } else
1747                 return -1;
1748         return wps_registrar_add_pin(wpa_s->wps->registrar, addr,
1749                                      use_uuid,
1750                                      (const u8 *) pin, os_strlen(pin), 300);
1751 }
1752
1753
1754 int wpas_wps_er_pbc(struct wpa_supplicant *wpa_s, const char *uuid)
1755 {
1756         u8 u[UUID_LEN], *use_uuid = NULL;
1757         u8 addr[ETH_ALEN], *use_addr = NULL;
1758
1759         if (uuid_str2bin(uuid, u) == 0)
1760                 use_uuid = u;
1761         else if (hwaddr_aton(uuid, addr) == 0)
1762                 use_addr = addr;
1763         else
1764                 return -1;
1765         return wps_er_pbc(wpa_s->wps_er, use_uuid, use_addr);
1766 }
1767
1768
1769 int wpas_wps_er_learn(struct wpa_supplicant *wpa_s, const char *uuid,
1770                       const char *pin)
1771 {
1772         u8 u[UUID_LEN], *use_uuid = NULL;
1773         u8 addr[ETH_ALEN], *use_addr = NULL;
1774
1775         if (uuid_str2bin(uuid, u) == 0)
1776                 use_uuid = u;
1777         else if (hwaddr_aton(uuid, addr) == 0)
1778                 use_addr = addr;
1779         else
1780                 return -1;
1781
1782         return wps_er_learn(wpa_s->wps_er, use_uuid, use_addr, (const u8 *) pin,
1783                             os_strlen(pin));
1784 }
1785
1786
1787 static int wpas_wps_network_to_cred(struct wpa_ssid *ssid,
1788                                     struct wps_credential *cred)
1789 {
1790         os_memset(cred, 0, sizeof(*cred));
1791         if (ssid->ssid_len > 32)
1792                 return -1;
1793         os_memcpy(cred->ssid, ssid->ssid, ssid->ssid_len);
1794         cred->ssid_len = ssid->ssid_len;
1795         if (ssid->key_mgmt & WPA_KEY_MGMT_PSK) {
1796                 cred->auth_type = (ssid->proto & WPA_PROTO_RSN) ?
1797                         WPS_AUTH_WPA2PSK : WPS_AUTH_WPAPSK;
1798                 if (ssid->pairwise_cipher & WPA_CIPHER_CCMP)
1799                         cred->encr_type = WPS_ENCR_AES;
1800                 else
1801                         cred->encr_type = WPS_ENCR_TKIP;
1802                 if (ssid->passphrase) {
1803                         cred->key_len = os_strlen(ssid->passphrase);
1804                         if (cred->key_len >= 64)
1805                                 return -1;
1806                         os_memcpy(cred->key, ssid->passphrase, cred->key_len);
1807                 } else if (ssid->psk_set) {
1808                         cred->key_len = 32;
1809                         os_memcpy(cred->key, ssid->psk, 32);
1810                 } else
1811                         return -1;
1812         } else {
1813                 cred->auth_type = WPS_AUTH_OPEN;
1814                 cred->encr_type = WPS_ENCR_NONE;
1815         }
1816
1817         return 0;
1818 }
1819
1820
1821 int wpas_wps_er_set_config(struct wpa_supplicant *wpa_s, const char *uuid,
1822                            int id)
1823 {
1824         u8 u[UUID_LEN], *use_uuid = NULL;
1825         u8 addr[ETH_ALEN], *use_addr = NULL;
1826         struct wpa_ssid *ssid;
1827         struct wps_credential cred;
1828
1829         if (uuid_str2bin(uuid, u) == 0)
1830                 use_uuid = u;
1831         else if (hwaddr_aton(uuid, addr) == 0)
1832                 use_addr = addr;
1833         else
1834                 return -1;
1835         ssid = wpa_config_get_network(wpa_s->conf, id);
1836         if (ssid == NULL || ssid->ssid == NULL)
1837                 return -1;
1838
1839         if (wpas_wps_network_to_cred(ssid, &cred) < 0)
1840                 return -1;
1841         return wps_er_set_config(wpa_s->wps_er, use_uuid, use_addr, &cred);
1842 }
1843
1844
1845 int wpas_wps_er_config(struct wpa_supplicant *wpa_s, const char *uuid,
1846                        const char *pin, struct wps_new_ap_settings *settings)
1847 {
1848         u8 u[UUID_LEN], *use_uuid = NULL;
1849         u8 addr[ETH_ALEN], *use_addr = NULL;
1850         struct wps_credential cred;
1851         size_t len;
1852
1853         if (uuid_str2bin(uuid, u) == 0)
1854                 use_uuid = u;
1855         else if (hwaddr_aton(uuid, addr) == 0)
1856                 use_addr = addr;
1857         else
1858                 return -1;
1859         if (settings->ssid_hex == NULL || settings->auth == NULL ||
1860             settings->encr == NULL || settings->key_hex == NULL)
1861                 return -1;
1862
1863         os_memset(&cred, 0, sizeof(cred));
1864         len = os_strlen(settings->ssid_hex);
1865         if ((len & 1) || len > 2 * sizeof(cred.ssid) ||
1866             hexstr2bin(settings->ssid_hex, cred.ssid, len / 2))
1867                 return -1;
1868         cred.ssid_len = len / 2;
1869
1870         len = os_strlen(settings->key_hex);
1871         if ((len & 1) || len > 2 * sizeof(cred.key) ||
1872             hexstr2bin(settings->key_hex, cred.key, len / 2))
1873                 return -1;
1874         cred.key_len = len / 2;
1875
1876         if (os_strcmp(settings->auth, "OPEN") == 0)
1877                 cred.auth_type = WPS_AUTH_OPEN;
1878         else if (os_strcmp(settings->auth, "WPAPSK") == 0)
1879                 cred.auth_type = WPS_AUTH_WPAPSK;
1880         else if (os_strcmp(settings->auth, "WPA2PSK") == 0)
1881                 cred.auth_type = WPS_AUTH_WPA2PSK;
1882         else
1883                 return -1;
1884
1885         if (os_strcmp(settings->encr, "NONE") == 0)
1886                 cred.encr_type = WPS_ENCR_NONE;
1887         else if (os_strcmp(settings->encr, "WEP") == 0)
1888                 cred.encr_type = WPS_ENCR_WEP;
1889         else if (os_strcmp(settings->encr, "TKIP") == 0)
1890                 cred.encr_type = WPS_ENCR_TKIP;
1891         else if (os_strcmp(settings->encr, "CCMP") == 0)
1892                 cred.encr_type = WPS_ENCR_AES;
1893         else
1894                 return -1;
1895
1896         return wps_er_config(wpa_s->wps_er, use_uuid, use_addr,
1897                              (const u8 *) pin, os_strlen(pin), &cred);
1898 }
1899
1900
1901 #ifdef CONFIG_WPS_NFC
1902 struct wpabuf * wpas_wps_er_nfc_config_token(struct wpa_supplicant *wpa_s,
1903                                              int ndef, const char *uuid)
1904 {
1905         struct wpabuf *ret;
1906         u8 u[UUID_LEN], *use_uuid = NULL;
1907         u8 addr[ETH_ALEN], *use_addr = NULL;
1908
1909         if (!wpa_s->wps_er)
1910                 return NULL;
1911
1912         if (uuid_str2bin(uuid, u) == 0)
1913                 use_uuid = u;
1914         else if (hwaddr_aton(uuid, addr) == 0)
1915                 use_addr = addr;
1916         else
1917                 return NULL;
1918
1919         ret = wps_er_nfc_config_token(wpa_s->wps_er, use_uuid, use_addr);
1920         if (ndef && ret) {
1921                 struct wpabuf *tmp;
1922                 tmp = ndef_build_wifi(ret);
1923                 wpabuf_free(ret);
1924                 if (tmp == NULL)
1925                         return NULL;
1926                 ret = tmp;
1927         }
1928
1929         return ret;
1930 }
1931 #endif /* CONFIG_WPS_NFC */
1932
1933
1934 static int callbacks_pending = 0;
1935
1936 static void wpas_wps_terminate_cb(void *ctx)
1937 {
1938         wpa_printf(MSG_DEBUG, "WPS ER: Terminated");
1939         if (--callbacks_pending <= 0)
1940                 eloop_terminate();
1941 }
1942 #endif /* CONFIG_WPS_ER */
1943
1944
1945 int wpas_wps_terminate_pending(struct wpa_supplicant *wpa_s)
1946 {
1947 #ifdef CONFIG_WPS_ER
1948         if (wpa_s->wps_er) {
1949                 callbacks_pending++;
1950                 wps_er_deinit(wpa_s->wps_er, wpas_wps_terminate_cb, wpa_s);
1951                 wpa_s->wps_er = NULL;
1952                 return 1;
1953         }
1954 #endif /* CONFIG_WPS_ER */
1955         return 0;
1956 }
1957
1958
1959 int wpas_wps_in_progress(struct wpa_supplicant *wpa_s)
1960 {
1961         struct wpa_ssid *ssid;
1962
1963         for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1964                 if (!ssid->disabled && ssid->key_mgmt == WPA_KEY_MGMT_WPS)
1965                         return 1;
1966         }
1967
1968         return 0;
1969 }
1970
1971
1972 void wpas_wps_update_config(struct wpa_supplicant *wpa_s)
1973 {
1974         struct wps_context *wps = wpa_s->wps;
1975
1976         if (wps == NULL)
1977                 return;
1978
1979         if (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS) {
1980                 wps->config_methods = wps_config_methods_str2bin(
1981                         wpa_s->conf->config_methods);
1982                 if ((wps->config_methods &
1983                      (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) ==
1984                     (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
1985                         wpa_printf(MSG_ERROR, "WPS: Both Label and Display "
1986                                    "config methods are not allowed at the "
1987                                    "same time");
1988                         wps->config_methods &= ~WPS_CONFIG_LABEL;
1989                 }
1990         }
1991         wps->config_methods = wps_fix_config_methods(wps->config_methods);
1992         wps->dev.config_methods = wps->config_methods;
1993
1994         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
1995                 os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type,
1996                           WPS_DEV_TYPE_LEN);
1997
1998         if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE) {
1999                 wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
2000                 os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type,
2001                           wps->dev.num_sec_dev_types * WPS_DEV_TYPE_LEN);
2002         }
2003
2004         if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION)
2005                 wpas_wps_set_vendor_ext_m1(wpa_s, wps);
2006
2007         if (wpa_s->conf->changed_parameters & CFG_CHANGED_OS_VERSION)
2008                 wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
2009
2010         if (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID)
2011                 wpas_wps_set_uuid(wpa_s, wps);
2012
2013         if (wpa_s->conf->changed_parameters &
2014             (CFG_CHANGED_DEVICE_NAME | CFG_CHANGED_WPS_STRING)) {
2015                 /* Update pointers to make sure they refer current values */
2016                 wps->dev.device_name = wpa_s->conf->device_name;
2017                 wps->dev.manufacturer = wpa_s->conf->manufacturer;
2018                 wps->dev.model_name = wpa_s->conf->model_name;
2019                 wps->dev.model_number = wpa_s->conf->model_number;
2020                 wps->dev.serial_number = wpa_s->conf->serial_number;
2021         }
2022 }
2023
2024
2025 #ifdef CONFIG_WPS_NFC
2026
2027 #ifdef CONFIG_WPS_ER
2028 static struct wpabuf *
2029 wpas_wps_network_config_token(struct wpa_supplicant *wpa_s, int ndef,
2030                               struct wpa_ssid *ssid)
2031 {
2032         struct wpabuf *ret;
2033         struct wps_credential cred;
2034
2035         if (wpas_wps_network_to_cred(ssid, &cred) < 0)
2036                 return NULL;
2037
2038         ret = wps_er_config_token_from_cred(wpa_s->wps, &cred);
2039
2040         if (ndef && ret) {
2041                 struct wpabuf *tmp;
2042                 tmp = ndef_build_wifi(ret);
2043                 wpabuf_free(ret);
2044                 if (tmp == NULL)
2045                         return NULL;
2046                 ret = tmp;
2047         }
2048
2049         return ret;
2050 }
2051 #endif /* CONFIG_WPS_ER */
2052
2053
2054 struct wpabuf * wpas_wps_nfc_config_token(struct wpa_supplicant *wpa_s,
2055                                           int ndef, const char *id_str)
2056 {
2057 #ifdef CONFIG_WPS_ER
2058         if (id_str) {
2059                 int id;
2060                 char *end = NULL;
2061                 struct wpa_ssid *ssid;
2062
2063                 id = strtol(id_str, &end, 10);
2064                 if (end && *end)
2065                         return NULL;
2066
2067                 ssid = wpa_config_get_network(wpa_s->conf, id);
2068                 if (ssid == NULL)
2069                         return NULL;
2070                 return wpas_wps_network_config_token(wpa_s, ndef, ssid);
2071         }
2072 #endif /* CONFIG_WPS_ER */
2073 #ifdef CONFIG_AP
2074         if (wpa_s->ap_iface)
2075                 return wpas_ap_wps_nfc_config_token(wpa_s, ndef);
2076 #endif /* CONFIG_AP */
2077         return NULL;
2078 }
2079
2080
2081 struct wpabuf * wpas_wps_nfc_token(struct wpa_supplicant *wpa_s, int ndef)
2082 {
2083         if (wpa_s->conf->wps_nfc_pw_from_config) {
2084                 return wps_nfc_token_build(ndef,
2085                                            wpa_s->conf->wps_nfc_dev_pw_id,
2086                                            wpa_s->conf->wps_nfc_dh_pubkey,
2087                                            wpa_s->conf->wps_nfc_dev_pw);
2088         }
2089
2090         return wps_nfc_token_gen(ndef, &wpa_s->conf->wps_nfc_dev_pw_id,
2091                                  &wpa_s->conf->wps_nfc_dh_pubkey,
2092                                  &wpa_s->conf->wps_nfc_dh_privkey,
2093                                  &wpa_s->conf->wps_nfc_dev_pw);
2094 }
2095
2096
2097 int wpas_wps_start_nfc(struct wpa_supplicant *wpa_s, const u8 *bssid)
2098 {
2099         struct wps_context *wps = wpa_s->wps;
2100         char pw[32 * 2 + 1];
2101
2102         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL ||
2103             wpa_s->conf->wps_nfc_dh_privkey == NULL ||
2104             wpa_s->conf->wps_nfc_dev_pw == NULL)
2105                 return -1;
2106
2107         dh5_free(wps->dh_ctx);
2108         wpabuf_free(wps->dh_pubkey);
2109         wpabuf_free(wps->dh_privkey);
2110         wps->dh_privkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
2111         wps->dh_pubkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
2112         if (wps->dh_privkey == NULL || wps->dh_pubkey == NULL) {
2113                 wps->dh_ctx = NULL;
2114                 wpabuf_free(wps->dh_pubkey);
2115                 wps->dh_pubkey = NULL;
2116                 wpabuf_free(wps->dh_privkey);
2117                 wps->dh_privkey = NULL;
2118                 return -1;
2119         }
2120         wps->dh_ctx = dh5_init_fixed(wps->dh_privkey, wps->dh_pubkey);
2121         if (wps->dh_ctx == NULL) {
2122                 wpabuf_free(wps->dh_pubkey);
2123                 wps->dh_pubkey = NULL;
2124                 wpabuf_free(wps->dh_privkey);
2125                 wps->dh_privkey = NULL;
2126                 return -1;
2127         }
2128
2129         wpa_snprintf_hex_uppercase(pw, sizeof(pw),
2130                                    wpabuf_head(wpa_s->conf->wps_nfc_dev_pw),
2131                                    wpabuf_len(wpa_s->conf->wps_nfc_dev_pw));
2132         return wpas_wps_start_pin(wpa_s, bssid, pw, 0,
2133                                   wpa_s->conf->wps_nfc_dev_pw_id);
2134 }
2135
2136
2137 static int wpas_wps_use_cred(struct wpa_supplicant *wpa_s,
2138                              struct wps_parse_attr *attr)
2139 {
2140         wpa_s->wps_ap_channel = 0;
2141
2142         /*
2143          * Disable existing networks temporarily to allow the newly learned
2144          * credential to be preferred. Enable the temporarily disabled networks
2145          * after 10 seconds.
2146          */
2147         wpas_wps_temp_disable(wpa_s, NULL);
2148         eloop_register_timeout(10, 0, wpas_wps_reenable_networks_cb, wpa_s,
2149                                NULL);
2150
2151         if (wps_oob_use_cred(wpa_s->wps, attr) < 0)
2152                 return -1;
2153
2154         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
2155                 return 0;
2156
2157         wpa_printf(MSG_DEBUG, "WPS: Request reconnection with new network "
2158                    "based on the received credential added");
2159         wpa_s->normal_scans = 0;
2160         wpa_supplicant_reinit_autoscan(wpa_s);
2161         if (wpa_s->wps_ap_channel) {
2162                 u16 chan = wpa_s->wps_ap_channel;
2163                 int freq = 0;
2164
2165                 if (chan >= 1 && chan <= 13)
2166                         freq = 2407 + 5 * chan;
2167                 else if (chan == 14)
2168                         freq = 2484;
2169                 else if (chan >= 30)
2170                         freq = 5000 + 5 * chan;
2171
2172                 if (freq) {
2173                         wpa_printf(MSG_DEBUG, "WPS: Credential indicated "
2174                                    "AP channel %u -> %u MHz", chan, freq);
2175                         wpa_s->after_wps = 5;
2176                         wpa_s->wps_freq = freq;
2177                 }
2178         }
2179         wpa_s->disconnected = 0;
2180         wpa_s->reassociate = 1;
2181
2182         wpa_supplicant_cancel_sched_scan(wpa_s);
2183         wpa_supplicant_req_scan(wpa_s, 0, 0);
2184
2185         return 0;
2186 }
2187
2188
2189 #ifdef CONFIG_WPS_ER
2190 static int wpas_wps_add_nfc_password_token(struct wpa_supplicant *wpa_s,
2191                                            struct wps_parse_attr *attr)
2192 {
2193         return wps_registrar_add_nfc_password_token(
2194                 wpa_s->wps->registrar, attr->oob_dev_password,
2195                 attr->oob_dev_password_len);
2196 }
2197 #endif /* CONFIG_WPS_ER */
2198
2199
2200 static int wpas_wps_nfc_tag_process(struct wpa_supplicant *wpa_s,
2201                                     const struct wpabuf *wps)
2202 {
2203         struct wps_parse_attr attr;
2204
2205         wpa_hexdump_buf(MSG_DEBUG, "WPS: Received NFC tag payload", wps);
2206
2207         if (wps_parse_msg(wps, &attr)) {
2208                 wpa_printf(MSG_DEBUG, "WPS: Ignore invalid data from NFC tag");
2209                 return -1;
2210         }
2211
2212         if (attr.num_cred)
2213                 return wpas_wps_use_cred(wpa_s, &attr);
2214
2215 #ifdef CONFIG_WPS_ER
2216         if (attr.oob_dev_password)
2217                 return wpas_wps_add_nfc_password_token(wpa_s, &attr);
2218 #endif /* CONFIG_WPS_ER */
2219
2220         wpa_printf(MSG_DEBUG, "WPS: Ignore unrecognized NFC tag");
2221         return -1;
2222 }
2223
2224
2225 int wpas_wps_nfc_tag_read(struct wpa_supplicant *wpa_s,
2226                           const struct wpabuf *data)
2227 {
2228         const struct wpabuf *wps = data;
2229         struct wpabuf *tmp = NULL;
2230         int ret;
2231
2232         if (wpabuf_len(data) < 4)
2233                 return -1;
2234
2235         if (*wpabuf_head_u8(data) != 0x10) {
2236                 /* Assume this contains full NDEF record */
2237                 tmp = ndef_parse_wifi(data);
2238                 if (tmp == NULL) {
2239                         wpa_printf(MSG_DEBUG, "WPS: Could not parse NDEF");
2240                         return -1;
2241                 }
2242                 wps = tmp;
2243         }
2244
2245         ret = wpas_wps_nfc_tag_process(wpa_s, wps);
2246         wpabuf_free(tmp);
2247         return ret;
2248 }
2249
2250
2251 struct wpabuf * wpas_wps_nfc_handover_req(struct wpa_supplicant *wpa_s, int cr)
2252 {
2253         if (cr)
2254                 return ndef_build_wifi_hc(1);
2255         return ndef_build_wifi_hr();
2256 }
2257
2258
2259 #ifdef CONFIG_WPS_NFC
2260 struct wpabuf * wpas_wps_er_nfc_handover_sel(struct wpa_supplicant *wpa_s,
2261                                              int ndef, const char *uuid)
2262 {
2263 #ifdef CONFIG_WPS_ER
2264         struct wpabuf *ret;
2265         u8 u[UUID_LEN], *use_uuid = NULL;
2266         u8 addr[ETH_ALEN], *use_addr = NULL;
2267
2268         if (!wpa_s->wps_er)
2269                 return NULL;
2270
2271         if (uuid == NULL)
2272                 return NULL;
2273         if (uuid_str2bin(uuid, u) == 0)
2274                 use_uuid = u;
2275         else if (hwaddr_aton(uuid, addr) == 0)
2276                 use_addr = addr;
2277         else
2278                 return NULL;
2279
2280         /*
2281          * Handover Select carrier record for WPS uses the same format as
2282          * configuration token.
2283          */
2284         ret = wps_er_nfc_config_token(wpa_s->wps_er, use_uuid, use_addr);
2285         if (ndef && ret) {
2286                 struct wpabuf *tmp;
2287                 tmp = ndef_build_wifi(ret);
2288                 wpabuf_free(ret);
2289                 if (tmp == NULL)
2290                         return NULL;
2291                 ret = tmp;
2292         }
2293
2294         return ret;
2295 #else /* CONFIG_WPS_ER */
2296         return NULL;
2297 #endif /* CONFIG_WPS_ER */
2298 }
2299 #endif /* CONFIG_WPS_NFC */
2300
2301
2302 struct wpabuf * wpas_wps_nfc_handover_sel(struct wpa_supplicant *wpa_s,
2303                                           int ndef, int cr, const char *uuid)
2304 {
2305         struct wpabuf *ret;
2306         if (!cr)
2307                 return NULL;
2308         ret = wpas_ap_wps_nfc_handover_sel(wpa_s, ndef);
2309         if (ret)
2310                 return ret;
2311         return wpas_wps_er_nfc_handover_sel(wpa_s, ndef, uuid);
2312 }
2313
2314
2315 int wpas_wps_nfc_rx_handover_req(struct wpa_supplicant *wpa_s,
2316                                  const struct wpabuf *data)
2317 {
2318         /* TODO */
2319         return -1;
2320 }
2321
2322
2323 int wpas_wps_nfc_rx_handover_sel(struct wpa_supplicant *wpa_s,
2324                                  const struct wpabuf *data)
2325 {
2326         struct wpabuf *wps;
2327         int ret;
2328
2329         wps = ndef_parse_wifi(data);
2330         if (wps == NULL)
2331                 return -1;
2332         wpa_printf(MSG_DEBUG, "WPS: Received application/vnd.wfa.wsc "
2333                    "payload from NFC connection handover");
2334         wpa_hexdump_buf_key(MSG_DEBUG, "WPS: NFC payload", wps);
2335         ret = wpas_wps_nfc_tag_process(wpa_s, wps);
2336         wpabuf_free(wps);
2337
2338         return ret;
2339 }
2340
2341
2342 int wpas_wps_nfc_report_handover(struct wpa_supplicant *wpa_s,
2343                                  const struct wpabuf *req,
2344                                  const struct wpabuf *sel)
2345 {
2346         wpa_printf(MSG_DEBUG, "NFC: WPS connection handover reported");
2347         wpa_hexdump_buf_key(MSG_DEBUG, "WPS: Carrier record in request", req);
2348         wpa_hexdump_buf_key(MSG_DEBUG, "WPS: Carrier record in select", sel);
2349         return wpas_wps_nfc_rx_handover_sel(wpa_s, sel);
2350 }
2351
2352 #endif /* CONFIG_WPS_NFC */
2353
2354
2355 extern int wpa_debug_level;
2356
2357 static void wpas_wps_dump_ap_info(struct wpa_supplicant *wpa_s)
2358 {
2359         size_t i;
2360         struct os_time now;
2361
2362         if (wpa_debug_level > MSG_DEBUG)
2363                 return;
2364
2365         if (wpa_s->wps_ap == NULL)
2366                 return;
2367
2368         os_get_time(&now);
2369
2370         for (i = 0; i < wpa_s->num_wps_ap; i++) {
2371                 struct wps_ap_info *ap = &wpa_s->wps_ap[i];
2372                 struct wpa_blacklist *e = wpa_blacklist_get(wpa_s, ap->bssid);
2373
2374                 wpa_printf(MSG_DEBUG, "WPS: AP[%d] " MACSTR " type=%d "
2375                            "tries=%d last_attempt=%d sec ago blacklist=%d",
2376                            (int) i, MAC2STR(ap->bssid), ap->type, ap->tries,
2377                            ap->last_attempt.sec > 0 ?
2378                            (int) now.sec - (int) ap->last_attempt.sec : -1,
2379                            e ? e->count : 0);
2380         }
2381 }
2382
2383
2384 static struct wps_ap_info * wpas_wps_get_ap_info(struct wpa_supplicant *wpa_s,
2385                                                  const u8 *bssid)
2386 {
2387         size_t i;
2388
2389         if (wpa_s->wps_ap == NULL)
2390                 return NULL;
2391
2392         for (i = 0; i < wpa_s->num_wps_ap; i++) {
2393                 struct wps_ap_info *ap = &wpa_s->wps_ap[i];
2394                 if (os_memcmp(ap->bssid, bssid, ETH_ALEN) == 0)
2395                         return ap;
2396         }
2397
2398         return NULL;
2399 }
2400
2401
2402 static void wpas_wps_update_ap_info_bss(struct wpa_supplicant *wpa_s,
2403                                         struct wpa_scan_res *res)
2404 {
2405         struct wpabuf *wps;
2406         enum wps_ap_info_type type;
2407         struct wps_ap_info *ap;
2408         int r;
2409
2410         if (wpa_scan_get_vendor_ie(res, WPS_IE_VENDOR_TYPE) == NULL)
2411                 return;
2412
2413         wps = wpa_scan_get_vendor_ie_multi(res, WPS_IE_VENDOR_TYPE);
2414         if (wps == NULL)
2415                 return;
2416
2417         r = wps_is_addr_authorized(wps, wpa_s->own_addr, 1);
2418         if (r == 2)
2419                 type = WPS_AP_SEL_REG_OUR;
2420         else if (r == 1)
2421                 type = WPS_AP_SEL_REG;
2422         else
2423                 type = WPS_AP_NOT_SEL_REG;
2424
2425         wpabuf_free(wps);
2426
2427         ap = wpas_wps_get_ap_info(wpa_s, res->bssid);
2428         if (ap) {
2429                 if (ap->type != type) {
2430                         wpa_printf(MSG_DEBUG, "WPS: AP " MACSTR
2431                                    " changed type %d -> %d",
2432                                    MAC2STR(res->bssid), ap->type, type);
2433                         ap->type = type;
2434                         if (type != WPS_AP_NOT_SEL_REG)
2435                                 wpa_blacklist_del(wpa_s, ap->bssid);
2436                 }
2437                 return;
2438         }
2439
2440         ap = os_realloc_array(wpa_s->wps_ap, wpa_s->num_wps_ap + 1,
2441                               sizeof(struct wps_ap_info));
2442         if (ap == NULL)
2443                 return;
2444
2445         wpa_s->wps_ap = ap;
2446         ap = &wpa_s->wps_ap[wpa_s->num_wps_ap];
2447         wpa_s->num_wps_ap++;
2448
2449         os_memset(ap, 0, sizeof(*ap));
2450         os_memcpy(ap->bssid, res->bssid, ETH_ALEN);
2451         ap->type = type;
2452         wpa_printf(MSG_DEBUG, "WPS: AP " MACSTR " type %d added",
2453                    MAC2STR(ap->bssid), ap->type);
2454 }
2455
2456
2457 void wpas_wps_update_ap_info(struct wpa_supplicant *wpa_s,
2458                              struct wpa_scan_results *scan_res)
2459 {
2460         size_t i;
2461
2462         for (i = 0; i < scan_res->num; i++)
2463                 wpas_wps_update_ap_info_bss(wpa_s, scan_res->res[i]);
2464
2465         wpas_wps_dump_ap_info(wpa_s);
2466 }
2467
2468
2469 void wpas_wps_notify_assoc(struct wpa_supplicant *wpa_s, const u8 *bssid)
2470 {
2471         struct wps_ap_info *ap;
2472
2473         wpa_s->after_wps = 0;
2474
2475         if (!wpa_s->wps_ap_iter)
2476                 return;
2477         ap = wpas_wps_get_ap_info(wpa_s, bssid);
2478         if (ap == NULL)
2479                 return;
2480         ap->tries++;
2481         os_get_time(&ap->last_attempt);
2482 }