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 const char * wps_event_fail_reason[NUM_WPS_EI_VALUES] = {
 571         "No Error", /* WPS_EI_NO_ERROR */
 572         "TKIP Only Prohibited", /* WPS_EI_SECURITY_TKIP_ONLY_PROHIBITED */
 573         "WEP Prohibited" /* WPS_EI_SECURITY_WEP_PROHIBITED */
 574 };
 575
 576 static void wpa_supplicant_wps_event_fail(struct wpa_supplicant *wpa_s,
 577                                           struct wps_event_fail *fail)
 578 {
 579         if (fail->error_indication > 0 &&
 580             fail->error_indication < NUM_WPS_EI_VALUES) {
 581                 wpa_msg(wpa_s, MSG_INFO,
 582                         WPS_EVENT_FAIL "msg=%d config_error=%d reason=%d (%s)",
 583                         fail->msg, fail->config_error, fail->error_indication,
 584                         wps_event_fail_reason[fail->error_indication]);
 585                 if (wpa_s->parent && wpa_s->parent != wpa_s)
 586                         wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_FAIL
 587                                 "msg=%d config_error=%d reason=%d (%s)",
 588                                 fail->msg, fail->config_error,
 589                                 fail->error_indication,
 590                                 wps_event_fail_reason[fail->error_indication]);
 591         } else {
 592                 wpa_msg(wpa_s, MSG_INFO,
 593                         WPS_EVENT_FAIL "msg=%d config_error=%d",
 594                         fail->msg, fail->config_error);
 595                 if (wpa_s->parent && wpa_s->parent != wpa_s)
 596                         wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_FAIL
 597                                 "msg=%d config_error=%d",
 598                                 fail->msg, fail->config_error);
 599         }
 600         wpas_clear_wps(wpa_s);
 601         wpas_notify_wps_event_fail(wpa_s, fail);
 602 #ifdef CONFIG_P2P
 603         wpas_p2p_wps_failed(wpa_s, fail);
 604 #endif /* CONFIG_P2P */
 605 }
 606
 607
 608 static void wpas_wps_reenable_networks_cb(void *eloop_ctx, void *timeout_ctx);
 609
 610 static void wpas_wps_reenable_networks(struct wpa_supplicant *wpa_s)
 611 {
 612         struct wpa_ssid *ssid;
 613         int changed = 0;
 614
 615         eloop_cancel_timeout(wpas_wps_reenable_networks_cb, wpa_s, NULL);
 616
 617         for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
 618                 if (ssid->disabled_for_connect && ssid->disabled) {
 619                         ssid->disabled_for_connect = 0;
 620                         ssid->disabled = 0;
 621                         wpas_notify_network_enabled_changed(wpa_s, ssid);
 622                         changed++;
 623                 }
 624         }
 625
 626         if (changed) {
 627 #ifndef CONFIG_NO_CONFIG_WRITE
 628                 if (wpa_s->conf->update_config &&
 629                     wpa_config_write(wpa_s->confname, wpa_s->conf)) {
 630                         wpa_printf(MSG_DEBUG, "WPS: Failed to update "
 631                                    "configuration");
 632                 }
 633 #endif /* CONFIG_NO_CONFIG_WRITE */
 634         }
 635 }
 636
 637
 638 static void wpas_wps_reenable_networks_cb(void *eloop_ctx, void *timeout_ctx)
 639 {
 640         struct wpa_supplicant *wpa_s = eloop_ctx;
 641         /* Enable the networks disabled during wpas_wps_reassoc */
 642         wpas_wps_reenable_networks(wpa_s);
 643 }
 644
 645
 646 static void wpa_supplicant_wps_event_success(struct wpa_supplicant *wpa_s)
 647 {
 648         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_SUCCESS);
 649         wpa_s->wps_success = 1;
 650         wpas_notify_wps_event_success(wpa_s);
 651
 652         /*
 653          * Enable the networks disabled during wpas_wps_reassoc after 10
 654          * seconds. The 10 seconds timer is to allow the data connection to be
 655          * formed before allowing other networks to be selected.
 656          */
 657         eloop_register_timeout(10, 0, wpas_wps_reenable_networks_cb, wpa_s,
 658                                NULL);
 659
 660 #ifdef CONFIG_P2P
 661         wpas_p2p_wps_success(wpa_s, wpa_s->bssid, 0);
 662 #endif /* CONFIG_P2P */
 663 }
 664
 665
 666 static void wpa_supplicant_wps_event_er_ap_add(struct wpa_supplicant *wpa_s,
 667                                                struct wps_event_er_ap *ap)
 668 {
 669         char uuid_str[100];
 670         char dev_type[WPS_DEV_TYPE_BUFSIZE];
 671
 672         uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str));
 673         if (ap->pri_dev_type)
 674                 wps_dev_type_bin2str(ap->pri_dev_type, dev_type,
 675                                      sizeof(dev_type));
 676         else
 677                 dev_type[0] = '\0';
 678
 679         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_ADD "%s " MACSTR
 680                 " pri_dev_type=%s wps_state=%d |%s|%s|%s|%s|%s|%s|",
 681                 uuid_str, MAC2STR(ap->mac_addr), dev_type, ap->wps_state,
 682                 ap->friendly_name ? ap->friendly_name : "",
 683                 ap->manufacturer ? ap->manufacturer : "",
 684                 ap->model_description ? ap->model_description : "",
 685                 ap->model_name ? ap->model_name : "",
 686                 ap->manufacturer_url ? ap->manufacturer_url : "",
 687                 ap->model_url ? ap->model_url : "");
 688 }
 689
 690
 691 static void wpa_supplicant_wps_event_er_ap_remove(struct wpa_supplicant *wpa_s,
 692                                                   struct wps_event_er_ap *ap)
 693 {
 694         char uuid_str[100];
 695         uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str));
 696         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_REMOVE "%s", uuid_str);
 697 }
 698
 699
 700 static void wpa_supplicant_wps_event_er_enrollee_add(
 701         struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee)
 702 {
 703         char uuid_str[100];
 704         char dev_type[WPS_DEV_TYPE_BUFSIZE];
 705
 706         uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str));
 707         if (enrollee->pri_dev_type)
 708                 wps_dev_type_bin2str(enrollee->pri_dev_type, dev_type,
 709                                      sizeof(dev_type));
 710         else
 711                 dev_type[0] = '\0';
 712
 713         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_ADD "%s " MACSTR
 714                 " M1=%d config_methods=0x%x dev_passwd_id=%d pri_dev_type=%s "
 715                 "|%s|%s|%s|%s|%s|",
 716                 uuid_str, MAC2STR(enrollee->mac_addr), enrollee->m1_received,
 717                 enrollee->config_methods, enrollee->dev_passwd_id, dev_type,
 718                 enrollee->dev_name ? enrollee->dev_name : "",
 719                 enrollee->manufacturer ? enrollee->manufacturer : "",
 720                 enrollee->model_name ? enrollee->model_name : "",
 721                 enrollee->model_number ? enrollee->model_number : "",
 722                 enrollee->serial_number ? enrollee->serial_number : "");
 723 }
 724
 725
 726 static void wpa_supplicant_wps_event_er_enrollee_remove(
 727         struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee)
 728 {
 729         char uuid_str[100];
 730         uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str));
 731         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_REMOVE "%s " MACSTR,
 732                 uuid_str, MAC2STR(enrollee->mac_addr));
 733 }
 734
 735
 736 static void wpa_supplicant_wps_event_er_ap_settings(
 737         struct wpa_supplicant *wpa_s,
 738         struct wps_event_er_ap_settings *ap_settings)
 739 {
 740         char uuid_str[100];
 741         char key_str[65];
 742         const struct wps_credential *cred = ap_settings->cred;
 743
 744         key_str[0] = '\0';
 745         if (cred->auth_type & (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) {
 746                 if (cred->key_len >= 8 && cred->key_len <= 64) {
 747                         os_memcpy(key_str, cred->key, cred->key_len);
 748                         key_str[cred->key_len] = '\0';
 749                 }
 750         }
 751
 752         uuid_bin2str(ap_settings->uuid, uuid_str, sizeof(uuid_str));
 753         /* Use wpa_msg_ctrl to avoid showing the key in debug log */
 754         wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_SETTINGS
 755                      "uuid=%s ssid=%s auth_type=0x%04x encr_type=0x%04x "
 756                      "key=%s",
 757                      uuid_str, wpa_ssid_txt(cred->ssid, cred->ssid_len),
 758                      cred->auth_type, cred->encr_type, key_str);
 759 }
 760
 761
 762 static void wpa_supplicant_wps_event_er_set_sel_reg(
 763         struct wpa_supplicant *wpa_s,
 764         struct wps_event_er_set_selected_registrar *ev)
 765 {
 766         char uuid_str[100];
 767
 768         uuid_bin2str(ev->uuid, uuid_str, sizeof(uuid_str));
 769         switch (ev->state) {
 770         case WPS_ER_SET_SEL_REG_START:
 771                 wpa_msg(wpa_s, MSG_DEBUG, WPS_EVENT_ER_SET_SEL_REG
 772                         "uuid=%s state=START sel_reg=%d dev_passwd_id=%u "
 773                         "sel_reg_config_methods=0x%x",
 774                         uuid_str, ev->sel_reg, ev->dev_passwd_id,
 775                         ev->sel_reg_config_methods);
 776                 break;
 777         case WPS_ER_SET_SEL_REG_DONE:
 778                 wpa_msg(wpa_s, MSG_DEBUG, WPS_EVENT_ER_SET_SEL_REG
 779                         "uuid=%s state=DONE", uuid_str);
 780                 break;
 781         case WPS_ER_SET_SEL_REG_FAILED:
 782                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_SET_SEL_REG
 783                         "uuid=%s state=FAILED", uuid_str);
 784                 break;
 785         }
 786 }
 787
 788
 789 static void wpa_supplicant_wps_event(void *ctx, enum wps_event event,
 790                                      union wps_event_data *data)
 791 {
 792         struct wpa_supplicant *wpa_s = ctx;
 793         switch (event) {
 794         case WPS_EV_M2D:
 795                 wpa_supplicant_wps_event_m2d(wpa_s, &data->m2d);
 796                 break;
 797         case WPS_EV_FAIL:
 798                 wpa_supplicant_wps_event_fail(wpa_s, &data->fail);
 799                 break;
 800         case WPS_EV_SUCCESS:
 801                 wpa_supplicant_wps_event_success(wpa_s);
 802                 break;
 803         case WPS_EV_PWD_AUTH_FAIL:
 804 #ifdef CONFIG_AP
 805                 if (wpa_s->ap_iface && data->pwd_auth_fail.enrollee)
 806                         wpa_supplicant_ap_pwd_auth_fail(wpa_s);
 807 #endif /* CONFIG_AP */
 808                 break;
 809         case WPS_EV_PBC_OVERLAP:
 810                 break;
 811         case WPS_EV_PBC_TIMEOUT:
 812                 break;
 813         case WPS_EV_ER_AP_ADD:
 814                 wpa_supplicant_wps_event_er_ap_add(wpa_s, &data->ap);
 815                 break;
 816         case WPS_EV_ER_AP_REMOVE:
 817                 wpa_supplicant_wps_event_er_ap_remove(wpa_s, &data->ap);
 818                 break;
 819         case WPS_EV_ER_ENROLLEE_ADD:
 820                 wpa_supplicant_wps_event_er_enrollee_add(wpa_s,
 821                                                          &data->enrollee);
 822                 break;
 823         case WPS_EV_ER_ENROLLEE_REMOVE:
 824                 wpa_supplicant_wps_event_er_enrollee_remove(wpa_s,
 825                                                             &data->enrollee);
 826                 break;
 827         case WPS_EV_ER_AP_SETTINGS:
 828                 wpa_supplicant_wps_event_er_ap_settings(wpa_s,
 829                                                         &data->ap_settings);
 830                 break;
 831         case WPS_EV_ER_SET_SELECTED_REGISTRAR:
 832                 wpa_supplicant_wps_event_er_set_sel_reg(wpa_s,
 833                                                         &data->set_sel_reg);
 834                 break;
 835         case WPS_EV_AP_PIN_SUCCESS:
 836                 break;
 837         }
 838 }
 839
 840
 841 enum wps_request_type wpas_wps_get_req_type(struct wpa_ssid *ssid)
 842 {
 843         if (eap_is_wps_pbc_enrollee(&ssid->eap) ||
 844             eap_is_wps_pin_enrollee(&ssid->eap))
 845                 return WPS_REQ_ENROLLEE;
 846         else
 847                 return WPS_REQ_REGISTRAR;
 848 }
 849
 850
 851 static void wpas_clear_wps(struct wpa_supplicant *wpa_s)
 852 {
 853         int id;
 854         struct wpa_ssid *ssid, *remove_ssid = NULL, *prev_current;
 855
 856         prev_current = wpa_s->current_ssid;
 857
 858         /* Enable the networks disabled during wpas_wps_reassoc */
 859         wpas_wps_reenable_networks(wpa_s);
 860
 861         eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
 862
 863         /* Remove any existing WPS network from configuration */
 864         ssid = wpa_s->conf->ssid;
 865         while (ssid) {
 866                 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
 867                         if (ssid == wpa_s->current_ssid) {
 868                                 wpa_s->current_ssid = NULL;
 869                                 if (ssid != NULL)
 870                                         wpas_notify_network_changed(wpa_s);
 871                         }
 872                         id = ssid->id;
 873                         remove_ssid = ssid;
 874                 } else
 875                         id = -1;
 876                 ssid = ssid->next;
 877                 if (id >= 0) {
 878                         if (prev_current == remove_ssid) {
 879                                 wpa_sm_set_config(wpa_s->wpa, NULL);
 880                                 eapol_sm_notify_config(wpa_s->eapol, NULL,
 881                                                        NULL);
 882                         }
 883                         wpas_notify_network_removed(wpa_s, remove_ssid);
 884                         wpa_config_remove_network(wpa_s->conf, id);
 885                 }
 886         }
 887
 888         wpas_wps_clear_ap_info(wpa_s);
 889 }
 890
 891
 892 static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx)
 893 {
 894         struct wpa_supplicant *wpa_s = eloop_ctx;
 895         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_TIMEOUT "Requested operation timed "
 896                 "out");
 897         wpas_clear_wps(wpa_s);
 898 }
 899
 900
 901 static struct wpa_ssid * wpas_wps_add_network(struct wpa_supplicant *wpa_s,
 902                                               int registrar, const u8 *bssid)
 903 {
 904         struct wpa_ssid *ssid;
 905
 906         ssid = wpa_config_add_network(wpa_s->conf);
 907         if (ssid == NULL)
 908                 return NULL;
 909         wpas_notify_network_added(wpa_s, ssid);
 910         wpa_config_set_network_defaults(ssid);
 911         ssid->temporary = 1;
 912         if (wpa_config_set(ssid, "key_mgmt", "WPS", 0) < 0 ||
 913             wpa_config_set(ssid, "eap", "WSC", 0) < 0 ||
 914             wpa_config_set(ssid, "identity", registrar ?
 915                            "\"" WSC_ID_REGISTRAR "\"" :
 916                            "\"" WSC_ID_ENROLLEE "\"", 0) < 0) {
 917                 wpas_notify_network_removed(wpa_s, ssid);
 918                 wpa_config_remove_network(wpa_s->conf, ssid->id);
 919                 return NULL;
 920         }
 921
 922         if (bssid) {
 923 #ifndef CONFIG_P2P
 924                 struct wpa_bss *bss;
 925                 int count = 0;
 926 #endif /* CONFIG_P2P */
 927
 928                 os_memcpy(ssid->bssid, bssid, ETH_ALEN);
 929                 ssid->bssid_set = 1;
 930
 931                 /*
 932                  * Note: With P2P, the SSID may change at the time the WPS
 933                  * provisioning is started, so better not filter the AP based
 934                  * on the current SSID in the scan results.
 935                  */
 936 #ifndef CONFIG_P2P
 937                 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
 938                         if (os_memcmp(bssid, bss->bssid, ETH_ALEN) != 0)
 939                                 continue;
 940
 941                         os_free(ssid->ssid);
 942                         ssid->ssid = os_malloc(bss->ssid_len);
 943                         if (ssid->ssid == NULL)
 944                                 break;
 945                         os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
 946                         ssid->ssid_len = bss->ssid_len;
 947                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Picked SSID from "
 948                                           "scan results",
 949                                           ssid->ssid, ssid->ssid_len);
 950                         count++;
 951                 }
 952
 953                 if (count > 1) {
 954                         wpa_printf(MSG_DEBUG, "WPS: More than one SSID found "
 955                                    "for the AP; use wildcard");
 956                         os_free(ssid->ssid);
 957                         ssid->ssid = NULL;
 958                         ssid->ssid_len = 0;
 959                 }
 960 #endif /* CONFIG_P2P */
 961         }
 962
 963         return ssid;
 964 }
 965
 966
 967 static void wpas_wps_temp_disable(struct wpa_supplicant *wpa_s,
 968                                   struct wpa_ssid *selected)
 969 {
 970         struct wpa_ssid *ssid;
 971
 972         if (wpa_s->current_ssid)
 973                 wpa_supplicant_deauthenticate(
 974                         wpa_s, WLAN_REASON_DEAUTH_LEAVING);
 975
 976         /* Mark all other networks disabled and trigger reassociation */
 977         ssid = wpa_s->conf->ssid;
 978         while (ssid) {
 979                 int was_disabled = ssid->disabled;
 980                 ssid->disabled_for_connect = 0;
 981                 /*
 982                  * In case the network object corresponds to a persistent group
 983                  * then do not send out network disabled signal. In addition,
 984                  * do not change disabled status of persistent network objects
 985                  * from 2 to 1 should we connect to another network.
 986                  */
 987                 if (was_disabled != 2) {
 988                         ssid->disabled = ssid != selected;
 989                         if (was_disabled != ssid->disabled) {
 990                                 if (ssid->disabled)
 991                                         ssid->disabled_for_connect = 1;
 992                                 wpas_notify_network_enabled_changed(wpa_s,
 993                                                                     ssid);
 994                         }
 995                 }
 996                 ssid = ssid->next;
 997         }
 998 }
 999
1000
1001 static void wpas_wps_reassoc(struct wpa_supplicant *wpa_s,
1002                              struct wpa_ssid *selected, const u8 *bssid)
1003 {
1004         struct wpa_bss *bss;
1005
1006         wpa_s->after_wps = 0;
1007         wpa_s->known_wps_freq = 0;
1008         if (bssid) {
1009                 bss = wpa_bss_get_bssid_latest(wpa_s, bssid);
1010                 if (bss && bss->freq > 0) {
1011                         wpa_s->known_wps_freq = 1;
1012                         wpa_s->wps_freq = bss->freq;
1013                 }
1014         }
1015
1016         wpas_wps_temp_disable(wpa_s, selected);
1017
1018         wpa_s->disconnected = 0;
1019         wpa_s->reassociate = 1;
1020         wpa_s->scan_runs = 0;
1021         wpa_s->normal_scans = 0;
1022         wpa_s->wps_success = 0;
1023         wpa_s->blacklist_cleared = 0;
1024         wpa_supplicant_req_scan(wpa_s, 0, 0);
1025 }
1026
1027
1028 int wpas_wps_start_pbc(struct wpa_supplicant *wpa_s, const u8 *bssid,
1029                        int p2p_group)
1030 {
1031         struct wpa_ssid *ssid;
1032         wpas_clear_wps(wpa_s);
1033         ssid = wpas_wps_add_network(wpa_s, 0, bssid);
1034         if (ssid == NULL)
1035                 return -1;
1036         ssid->temporary = 1;
1037         ssid->p2p_group = p2p_group;
1038 #ifdef CONFIG_P2P
1039         if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) {
1040                 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1);
1041                 if (ssid->ssid) {
1042                         ssid->ssid_len = wpa_s->go_params->ssid_len;
1043                         os_memcpy(ssid->ssid, wpa_s->go_params->ssid,
1044                                   ssid->ssid_len);
1045                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP "
1046                                           "SSID", ssid->ssid, ssid->ssid_len);
1047                 }
1048         }
1049 #endif /* CONFIG_P2P */
1050         if (wpa_config_set(ssid, "phase1", "\"pbc=1\"", 0) < 0)
1051                 return -1;
1052         if (wpa_s->wps_fragment_size)
1053                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
1054         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
1055                                wpa_s, NULL);
1056         wpas_wps_reassoc(wpa_s, ssid, bssid);
1057         return 0;
1058 }
1059
1060
1061 int wpas_wps_start_pin(struct wpa_supplicant *wpa_s, const u8 *bssid,
1062                        const char *pin, int p2p_group, u16 dev_pw_id)
1063 {
1064         struct wpa_ssid *ssid;
1065         char val[128];
1066         unsigned int rpin = 0;
1067
1068         wpas_clear_wps(wpa_s);
1069         ssid = wpas_wps_add_network(wpa_s, 0, bssid);
1070         if (ssid == NULL)
1071                 return -1;
1072         ssid->temporary = 1;
1073         ssid->p2p_group = p2p_group;
1074 #ifdef CONFIG_P2P
1075         if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) {
1076                 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1);
1077                 if (ssid->ssid) {
1078                         ssid->ssid_len = wpa_s->go_params->ssid_len;
1079                         os_memcpy(ssid->ssid, wpa_s->go_params->ssid,
1080                                   ssid->ssid_len);
1081                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP "
1082                                           "SSID", ssid->ssid, ssid->ssid_len);
1083                 }
1084         }
1085 #endif /* CONFIG_P2P */
1086         if (pin)
1087                 os_snprintf(val, sizeof(val), "\"pin=%s dev_pw_id=%u\"",
1088                             pin, dev_pw_id);
1089         else {
1090                 rpin = wps_generate_pin();
1091                 os_snprintf(val, sizeof(val), "\"pin=%08d dev_pw_id=%u\"",
1092                             rpin, dev_pw_id);
1093         }
1094         if (wpa_config_set(ssid, "phase1", val, 0) < 0)
1095                 return -1;
1096         if (wpa_s->wps_fragment_size)
1097                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
1098         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
1099                                wpa_s, NULL);
1100         wpa_s->wps_ap_iter = 1;
1101         wpas_wps_reassoc(wpa_s, ssid, bssid);
1102         return rpin;
1103 }
1104
1105
1106 /* Cancel the wps pbc/pin requests */
1107 int wpas_wps_cancel(struct wpa_supplicant *wpa_s)
1108 {
1109 #ifdef CONFIG_AP
1110         if (wpa_s->ap_iface) {
1111                 wpa_printf(MSG_DEBUG, "WPS: Cancelling in AP mode");
1112                 return wpa_supplicant_ap_wps_cancel(wpa_s);
1113         }
1114 #endif /* CONFIG_AP */
1115
1116         if (wpa_s->wpa_state == WPA_SCANNING ||
1117             wpa_s->wpa_state == WPA_DISCONNECTED) {
1118                 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - cancel scan");
1119                 wpa_supplicant_cancel_scan(wpa_s);
1120                 wpas_clear_wps(wpa_s);
1121         } else if (wpa_s->wpa_state >= WPA_ASSOCIATED) {
1122                 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - "
1123                            "deauthenticate");
1124                 wpa_supplicant_deauthenticate(wpa_s,
1125                                               WLAN_REASON_DEAUTH_LEAVING);
1126                 wpas_clear_wps(wpa_s);
1127         } else {
1128                 wpas_wps_reenable_networks(wpa_s);
1129                 wpas_wps_clear_ap_info(wpa_s);
1130         }
1131
1132         return 0;
1133 }
1134
1135
1136 int wpas_wps_start_reg(struct wpa_supplicant *wpa_s, const u8 *bssid,
1137                        const char *pin, struct wps_new_ap_settings *settings)
1138 {
1139         struct wpa_ssid *ssid;
1140         char val[200];
1141         char *pos, *end;
1142         int res;
1143
1144         if (!pin)
1145                 return -1;
1146         wpas_clear_wps(wpa_s);
1147         ssid = wpas_wps_add_network(wpa_s, 1, bssid);
1148         if (ssid == NULL)
1149                 return -1;
1150         ssid->temporary = 1;
1151         pos = val;
1152         end = pos + sizeof(val);
1153         res = os_snprintf(pos, end - pos, "\"pin=%s", pin);
1154         if (res < 0 || res >= end - pos)
1155                 return -1;
1156         pos += res;
1157         if (settings) {
1158                 res = os_snprintf(pos, end - pos, " new_ssid=%s new_auth=%s "
1159                                   "new_encr=%s new_key=%s",
1160                                   settings->ssid_hex, settings->auth,
1161                                   settings->encr, settings->key_hex);
1162                 if (res < 0 || res >= end - pos)
1163                         return -1;
1164                 pos += res;
1165         }
1166         res = os_snprintf(pos, end - pos, "\"");
1167         if (res < 0 || res >= end - pos)
1168                 return -1;
1169         if (wpa_config_set(ssid, "phase1", val, 0) < 0)
1170                 return -1;
1171         if (wpa_s->wps_fragment_size)
1172                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
1173         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
1174                                wpa_s, NULL);
1175         wpas_wps_reassoc(wpa_s, ssid, bssid);
1176         return 0;
1177 }
1178
1179
1180 static int wpas_wps_new_psk_cb(void *ctx, const u8 *mac_addr, const u8 *psk,
1181                                size_t psk_len)
1182 {
1183         wpa_printf(MSG_DEBUG, "WPS: Received new WPA/WPA2-PSK from WPS for "
1184                    "STA " MACSTR, MAC2STR(mac_addr));
1185         wpa_hexdump_key(MSG_DEBUG, "Per-device PSK", psk, psk_len);
1186
1187         /* TODO */
1188
1189         return 0;
1190 }
1191
1192
1193 static void wpas_wps_pin_needed_cb(void *ctx, const u8 *uuid_e,
1194                                    const struct wps_device_data *dev)
1195 {
1196         char uuid[40], txt[400];
1197         int len;
1198         char devtype[WPS_DEV_TYPE_BUFSIZE];
1199         if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
1200                 return;
1201         wpa_printf(MSG_DEBUG, "WPS: PIN needed for UUID-E %s", uuid);
1202         len = os_snprintf(txt, sizeof(txt), "WPS-EVENT-PIN-NEEDED %s " MACSTR
1203                           " [%s|%s|%s|%s|%s|%s]",
1204                           uuid, MAC2STR(dev->mac_addr), dev->device_name,
1205                           dev->manufacturer, dev->model_name,
1206                           dev->model_number, dev->serial_number,
1207                           wps_dev_type_bin2str(dev->pri_dev_type, devtype,
1208                                                sizeof(devtype)));
1209         if (len > 0 && len < (int) sizeof(txt))
1210                 wpa_printf(MSG_INFO, "%s", txt);
1211 }
1212
1213
1214 static void wpas_wps_set_sel_reg_cb(void *ctx, int sel_reg, u16 dev_passwd_id,
1215                                     u16 sel_reg_config_methods)
1216 {
1217 #ifdef CONFIG_WPS_ER
1218         struct wpa_supplicant *wpa_s = ctx;
1219
1220         if (wpa_s->wps_er == NULL)
1221                 return;
1222         wpa_printf(MSG_DEBUG, "WPS ER: SetSelectedRegistrar - sel_reg=%d "
1223                    "dev_password_id=%u sel_reg_config_methods=0x%x",
1224                    sel_reg, dev_passwd_id, sel_reg_config_methods);
1225         wps_er_set_sel_reg(wpa_s->wps_er, sel_reg, dev_passwd_id,
1226                            sel_reg_config_methods);
1227 #endif /* CONFIG_WPS_ER */
1228 }
1229
1230
1231 static u16 wps_fix_config_methods(u16 config_methods)
1232 {
1233 #ifdef CONFIG_WPS2
1234         if ((config_methods &
1235              (WPS_CONFIG_DISPLAY | WPS_CONFIG_VIRT_DISPLAY |
1236               WPS_CONFIG_PHY_DISPLAY)) == WPS_CONFIG_DISPLAY) {
1237                 wpa_printf(MSG_INFO, "WPS: Converting display to "
1238                            "virtual_display for WPS 2.0 compliance");
1239                 config_methods |= WPS_CONFIG_VIRT_DISPLAY;
1240         }
1241         if ((config_methods &
1242              (WPS_CONFIG_PUSHBUTTON | WPS_CONFIG_VIRT_PUSHBUTTON |
1243               WPS_CONFIG_PHY_PUSHBUTTON)) == WPS_CONFIG_PUSHBUTTON) {
1244                 wpa_printf(MSG_INFO, "WPS: Converting push_button to "
1245                            "virtual_push_button for WPS 2.0 compliance");
1246                 config_methods |= WPS_CONFIG_VIRT_PUSHBUTTON;
1247         }
1248 #endif /* CONFIG_WPS2 */
1249
1250         return config_methods;
1251 }
1252
1253
1254 static void wpas_wps_set_uuid(struct wpa_supplicant *wpa_s,
1255                               struct wps_context *wps)
1256 {
1257         wpa_printf(MSG_DEBUG, "WPS: Set UUID for interface %s", wpa_s->ifname);
1258         if (is_nil_uuid(wpa_s->conf->uuid)) {
1259                 struct wpa_supplicant *first;
1260                 first = wpa_s->global->ifaces;
1261                 while (first && first->next)
1262                         first = first->next;
1263                 if (first && first != wpa_s) {
1264                         if (wps != wpa_s->global->ifaces->wps)
1265                                 os_memcpy(wps->uuid,
1266                                           wpa_s->global->ifaces->wps->uuid,
1267                                           WPS_UUID_LEN);
1268                         wpa_hexdump(MSG_DEBUG, "WPS: UUID from the first "
1269                                     "interface", wps->uuid, WPS_UUID_LEN);
1270                 } else {
1271                         uuid_gen_mac_addr(wpa_s->own_addr, wps->uuid);
1272                         wpa_hexdump(MSG_DEBUG, "WPS: UUID based on MAC "
1273                                     "address", wps->uuid, WPS_UUID_LEN);
1274                 }
1275         } else {
1276                 os_memcpy(wps->uuid, wpa_s->conf->uuid, WPS_UUID_LEN);
1277                 wpa_hexdump(MSG_DEBUG, "WPS: UUID based on configuration",
1278                             wps->uuid, WPS_UUID_LEN);
1279         }
1280 }
1281
1282
1283 static void wpas_wps_set_vendor_ext_m1(struct wpa_supplicant *wpa_s,
1284                                        struct wps_context *wps)
1285 {
1286         wpabuf_free(wps->dev.vendor_ext_m1);
1287         wps->dev.vendor_ext_m1 = NULL;
1288
1289         if (wpa_s->conf->wps_vendor_ext_m1) {
1290                 wps->dev.vendor_ext_m1 =
1291                         wpabuf_dup(wpa_s->conf->wps_vendor_ext_m1);
1292                 if (!wps->dev.vendor_ext_m1) {
1293                         wpa_printf(MSG_ERROR, "WPS: Cannot "
1294                                    "allocate memory for vendor_ext_m1");
1295                 }
1296         }
1297 }
1298
1299
1300 int wpas_wps_init(struct wpa_supplicant *wpa_s)
1301 {
1302         struct wps_context *wps;
1303         struct wps_registrar_config rcfg;
1304         struct hostapd_hw_modes *modes;
1305         u16 m;
1306
1307         wps = os_zalloc(sizeof(*wps));
1308         if (wps == NULL)
1309                 return -1;
1310
1311         wps->cred_cb = wpa_supplicant_wps_cred;
1312         wps->event_cb = wpa_supplicant_wps_event;
1313         wps->cb_ctx = wpa_s;
1314
1315         wps->dev.device_name = wpa_s->conf->device_name;
1316         wps->dev.manufacturer = wpa_s->conf->manufacturer;
1317         wps->dev.model_name = wpa_s->conf->model_name;
1318         wps->dev.model_number = wpa_s->conf->model_number;
1319         wps->dev.serial_number = wpa_s->conf->serial_number;
1320         wps->config_methods =
1321                 wps_config_methods_str2bin(wpa_s->conf->config_methods);
1322         if ((wps->config_methods & (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) ==
1323             (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
1324                 wpa_printf(MSG_ERROR, "WPS: Both Label and Display config "
1325                            "methods are not allowed at the same time");
1326                 os_free(wps);
1327                 return -1;
1328         }
1329         wps->config_methods = wps_fix_config_methods(wps->config_methods);
1330         wps->dev.config_methods = wps->config_methods;
1331         os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type,
1332                   WPS_DEV_TYPE_LEN);
1333
1334         wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
1335         os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type,
1336                   WPS_DEV_TYPE_LEN * wps->dev.num_sec_dev_types);
1337
1338         wpas_wps_set_vendor_ext_m1(wpa_s, wps);
1339
1340         wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
1341         modes = wpa_s->hw.modes;
1342         if (modes) {
1343                 for (m = 0; m < wpa_s->hw.num_modes; m++) {
1344                         if (modes[m].mode == HOSTAPD_MODE_IEEE80211B ||
1345                             modes[m].mode == HOSTAPD_MODE_IEEE80211G)
1346                                 wps->dev.rf_bands |= WPS_RF_24GHZ;
1347                         else if (modes[m].mode == HOSTAPD_MODE_IEEE80211A)
1348                                 wps->dev.rf_bands |= WPS_RF_50GHZ;
1349                 }
1350         }
1351         if (wps->dev.rf_bands == 0) {
1352                 /*
1353                  * Default to claiming support for both bands if the driver
1354                  * does not provide support for fetching supported bands.
1355                  */
1356                 wps->dev.rf_bands = WPS_RF_24GHZ | WPS_RF_50GHZ;
1357         }
1358         os_memcpy(wps->dev.mac_addr, wpa_s->own_addr, ETH_ALEN);
1359         wpas_wps_set_uuid(wpa_s, wps);
1360
1361         wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK;
1362         wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP;
1363
1364         os_memset(&rcfg, 0, sizeof(rcfg));
1365         rcfg.new_psk_cb = wpas_wps_new_psk_cb;
1366         rcfg.pin_needed_cb = wpas_wps_pin_needed_cb;
1367         rcfg.set_sel_reg_cb = wpas_wps_set_sel_reg_cb;
1368         rcfg.cb_ctx = wpa_s;
1369
1370         wps->registrar = wps_registrar_init(wps, &rcfg);
1371         if (wps->registrar == NULL) {
1372                 wpa_printf(MSG_DEBUG, "Failed to initialize WPS Registrar");
1373                 os_free(wps);
1374                 return -1;
1375         }
1376
1377         wpa_s->wps = wps;
1378
1379         return 0;
1380 }
1381
1382
1383 void wpas_wps_deinit(struct wpa_supplicant *wpa_s)
1384 {
1385         eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
1386         eloop_cancel_timeout(wpas_wps_reenable_networks_cb, wpa_s, NULL);
1387         wpas_wps_clear_ap_info(wpa_s);
1388
1389         if (wpa_s->wps == NULL)
1390                 return;
1391
1392 #ifdef CONFIG_WPS_ER
1393         wps_er_deinit(wpa_s->wps_er, NULL, NULL);
1394         wpa_s->wps_er = NULL;
1395 #endif /* CONFIG_WPS_ER */
1396
1397         wps_registrar_deinit(wpa_s->wps->registrar);
1398         wpabuf_free(wpa_s->wps->dh_pubkey);
1399         wpabuf_free(wpa_s->wps->dh_privkey);
1400         wpabuf_free(wpa_s->wps->dev.vendor_ext_m1);
1401         os_free(wpa_s->wps->network_key);
1402         os_free(wpa_s->wps);
1403         wpa_s->wps = NULL;
1404 }
1405
1406
1407 int wpas_wps_ssid_bss_match(struct wpa_supplicant *wpa_s,
1408                             struct wpa_ssid *ssid, struct wpa_bss *bss)
1409 {
1410         struct wpabuf *wps_ie;
1411
1412         if (!(ssid->key_mgmt & WPA_KEY_MGMT_WPS))
1413                 return -1;
1414
1415         wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1416         if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
1417                 if (!wps_ie) {
1418                         wpa_printf(MSG_DEBUG, "   skip - non-WPS AP");
1419                         return 0;
1420                 }
1421
1422                 if (!wps_is_selected_pbc_registrar(wps_ie)) {
1423                         wpa_printf(MSG_DEBUG, "   skip - WPS AP "
1424                                    "without active PBC Registrar");
1425                         wpabuf_free(wps_ie);
1426                         return 0;
1427                 }
1428
1429                 /* TODO: overlap detection */
1430                 wpa_printf(MSG_DEBUG, "   selected based on WPS IE "
1431                            "(Active PBC)");
1432                 wpabuf_free(wps_ie);
1433                 return 1;
1434         }
1435
1436         if (eap_is_wps_pin_enrollee(&ssid->eap)) {
1437                 if (!wps_ie) {
1438                         wpa_printf(MSG_DEBUG, "   skip - non-WPS AP");
1439                         return 0;
1440                 }
1441
1442                 /*
1443                  * Start with WPS APs that advertise our address as an
1444                  * authorized MAC (v2.0) or active PIN Registrar (v1.0) and
1445                  * allow any WPS AP after couple of scans since some APs do not
1446                  * set Selected Registrar attribute properly when using
1447                  * external Registrar.
1448                  */
1449                 if (!wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1)) {
1450                         if (wpa_s->scan_runs < WPS_PIN_SCAN_IGNORE_SEL_REG) {
1451                                 wpa_printf(MSG_DEBUG, "   skip - WPS AP "
1452                                            "without active PIN Registrar");
1453                                 wpabuf_free(wps_ie);
1454                                 return 0;
1455                         }
1456                         wpa_printf(MSG_DEBUG, "   selected based on WPS IE");
1457                 } else {
1458                         wpa_printf(MSG_DEBUG, "   selected based on WPS IE "
1459                                    "(Authorized MAC or Active PIN)");
1460                 }
1461                 wpabuf_free(wps_ie);
1462                 return 1;
1463         }
1464
1465         if (wps_ie) {
1466                 wpa_printf(MSG_DEBUG, "   selected based on WPS IE");
1467                 wpabuf_free(wps_ie);
1468                 return 1;
1469         }
1470
1471         return -1;
1472 }
1473
1474
1475 int wpas_wps_ssid_wildcard_ok(struct wpa_supplicant *wpa_s,
1476                               struct wpa_ssid *ssid,
1477                               struct wpa_bss *bss)
1478 {
1479         struct wpabuf *wps_ie = NULL;
1480         int ret = 0;
1481
1482         if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
1483                 wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1484                 if (wps_ie && wps_is_selected_pbc_registrar(wps_ie)) {
1485                         /* allow wildcard SSID for WPS PBC */
1486                         ret = 1;
1487                 }
1488         } else if (eap_is_wps_pin_enrollee(&ssid->eap)) {
1489                 wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1490                 if (wps_ie &&
1491                     (wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1) ||
1492                      wpa_s->scan_runs >= WPS_PIN_SCAN_IGNORE_SEL_REG)) {
1493                         /* allow wildcard SSID for WPS PIN */
1494                         ret = 1;
1495                 }
1496         }
1497
1498         if (!ret && ssid->bssid_set &&
1499             os_memcmp(ssid->bssid, bss->bssid, ETH_ALEN) == 0) {
1500                 /* allow wildcard SSID due to hardcoded BSSID match */
1501                 ret = 1;
1502         }
1503
1504 #ifdef CONFIG_WPS_STRICT
1505         if (wps_ie) {
1506                 if (wps_validate_beacon_probe_resp(wps_ie, bss->beacon_ie_len >
1507                                                    0, bss->bssid) < 0)
1508                         ret = 0;
1509                 if (bss->beacon_ie_len) {
1510                         struct wpabuf *bcn_wps;
1511                         bcn_wps = wpa_bss_get_vendor_ie_multi_beacon(
1512                                 bss, WPS_IE_VENDOR_TYPE);
1513                         if (bcn_wps == NULL) {
1514                                 wpa_printf(MSG_DEBUG, "WPS: Mandatory WPS IE "
1515                                            "missing from AP Beacon");
1516                                 ret = 0;
1517                         } else {
1518                                 if (wps_validate_beacon(wps_ie) < 0)
1519                                         ret = 0;
1520                                 wpabuf_free(bcn_wps);
1521                         }
1522                 }
1523         }
1524 #endif /* CONFIG_WPS_STRICT */
1525
1526         wpabuf_free(wps_ie);
1527
1528         return ret;
1529 }
1530
1531
1532 int wpas_wps_scan_pbc_overlap(struct wpa_supplicant *wpa_s,
1533                               struct wpa_bss *selected, struct wpa_ssid *ssid)
1534 {
1535         const u8 *sel_uuid, *uuid;
1536         struct wpabuf *wps_ie;
1537         int ret = 0;
1538         struct wpa_bss *bss;
1539
1540         if (!eap_is_wps_pbc_enrollee(&ssid->eap))
1541                 return 0;
1542
1543         wpa_printf(MSG_DEBUG, "WPS: Check whether PBC session overlap is "
1544                    "present in scan results; selected BSSID " MACSTR,
1545                    MAC2STR(selected->bssid));
1546
1547         /* Make sure that only one AP is in active PBC mode */
1548         wps_ie = wpa_bss_get_vendor_ie_multi(selected, WPS_IE_VENDOR_TYPE);
1549         if (wps_ie) {
1550                 sel_uuid = wps_get_uuid_e(wps_ie);
1551                 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the selected BSS",
1552                             sel_uuid, UUID_LEN);
1553         } else {
1554                 wpa_printf(MSG_DEBUG, "WPS: Selected BSS does not include "
1555                            "WPS IE?!");
1556                 sel_uuid = NULL;
1557         }
1558
1559         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1560                 struct wpabuf *ie;
1561                 if (bss == selected)
1562                         continue;
1563                 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1564                 if (!ie)
1565                         continue;
1566                 if (!wps_is_selected_pbc_registrar(ie)) {
1567                         wpabuf_free(ie);
1568                         continue;
1569                 }
1570                 wpa_printf(MSG_DEBUG, "WPS: Another BSS in active PBC mode: "
1571                            MACSTR, MAC2STR(bss->bssid));
1572                 uuid = wps_get_uuid_e(ie);
1573                 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the other BSS",
1574                             uuid, UUID_LEN);
1575                 if (sel_uuid == NULL || uuid == NULL ||
1576                     os_memcmp(sel_uuid, uuid, UUID_LEN) != 0) {
1577                         ret = 1; /* PBC overlap */
1578                         wpa_msg(wpa_s, MSG_INFO, "WPS: PBC overlap detected: "
1579                                 MACSTR " and " MACSTR,
1580                                 MAC2STR(selected->bssid),
1581                                 MAC2STR(bss->bssid));
1582                         wpabuf_free(ie);
1583                         break;
1584                 }
1585
1586                 /* TODO: verify that this is reasonable dual-band situation */
1587
1588                 wpabuf_free(ie);
1589         }
1590
1591         wpabuf_free(wps_ie);
1592
1593         return ret;
1594 }
1595
1596
1597 void wpas_wps_notify_scan_results(struct wpa_supplicant *wpa_s)
1598 {
1599         struct wpa_bss *bss;
1600         unsigned int pbc = 0, auth = 0, pin = 0, wps = 0;
1601
1602         if (wpa_s->disconnected || wpa_s->wpa_state >= WPA_ASSOCIATED)
1603                 return;
1604
1605         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1606                 struct wpabuf *ie;
1607                 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1608                 if (!ie)
1609                         continue;
1610                 if (wps_is_selected_pbc_registrar(ie))
1611                         pbc++;
1612                 else if (wps_is_addr_authorized(ie, wpa_s->own_addr, 0))
1613                         auth++;
1614                 else if (wps_is_selected_pin_registrar(ie))
1615                         pin++;
1616                 else
1617                         wps++;
1618                 wpabuf_free(ie);
1619         }
1620
1621         if (pbc)
1622                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PBC);
1623         else if (auth)
1624                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_AUTH);
1625         else if (pin)
1626                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PIN);
1627         else if (wps)
1628                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE);
1629 }
1630
1631
1632 int wpas_wps_searching(struct wpa_supplicant *wpa_s)
1633 {
1634         struct wpa_ssid *ssid;
1635
1636         for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1637                 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && !ssid->disabled)
1638                         return 1;
1639         }
1640
1641         return 0;
1642 }
1643
1644
1645 int wpas_wps_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
1646                               char *end)
1647 {
1648         struct wpabuf *wps_ie;
1649         int ret;
1650
1651         wps_ie = ieee802_11_vendor_ie_concat(ies, ies_len, WPS_DEV_OUI_WFA);
1652         if (wps_ie == NULL)
1653                 return 0;
1654
1655         ret = wps_attr_text(wps_ie, buf, end);
1656         wpabuf_free(wps_ie);
1657         return ret;
1658 }
1659
1660
1661 int wpas_wps_er_start(struct wpa_supplicant *wpa_s, const char *filter)
1662 {
1663 #ifdef CONFIG_WPS_ER
1664         if (wpa_s->wps_er) {
1665                 wps_er_refresh(wpa_s->wps_er);
1666                 return 0;
1667         }
1668         wpa_s->wps_er = wps_er_init(wpa_s->wps, wpa_s->ifname, filter);
1669         if (wpa_s->wps_er == NULL)
1670                 return -1;
1671         return 0;
1672 #else /* CONFIG_WPS_ER */
1673         return 0;
1674 #endif /* CONFIG_WPS_ER */
1675 }
1676
1677
1678 int wpas_wps_er_stop(struct wpa_supplicant *wpa_s)
1679 {
1680 #ifdef CONFIG_WPS_ER
1681         wps_er_deinit(wpa_s->wps_er, NULL, NULL);
1682         wpa_s->wps_er = NULL;
1683 #endif /* CONFIG_WPS_ER */
1684         return 0;
1685 }
1686
1687
1688 #ifdef CONFIG_WPS_ER
1689 int wpas_wps_er_add_pin(struct wpa_supplicant *wpa_s, const u8 *addr,
1690                         const char *uuid, const char *pin)
1691 {
1692         u8 u[UUID_LEN];
1693         const u8 *use_uuid = NULL;
1694         u8 addr_buf[ETH_ALEN];
1695
1696         if (os_strcmp(uuid, "any") == 0) {
1697         } else if (uuid_str2bin(uuid, u) == 0) {
1698                 use_uuid = u;
1699         } else if (hwaddr_aton(uuid, addr_buf) == 0) {
1700                 use_uuid = wps_er_get_sta_uuid(wpa_s->wps_er, addr_buf);
1701                 if (use_uuid == NULL)
1702                         return -1;
1703         } else
1704                 return -1;
1705         return wps_registrar_add_pin(wpa_s->wps->registrar, addr,
1706                                      use_uuid,
1707                                      (const u8 *) pin, os_strlen(pin), 300);
1708 }
1709
1710
1711 int wpas_wps_er_pbc(struct wpa_supplicant *wpa_s, const char *uuid)
1712 {
1713         u8 u[UUID_LEN], *use_uuid = NULL;
1714         u8 addr[ETH_ALEN], *use_addr = NULL;
1715
1716         if (uuid_str2bin(uuid, u) == 0)
1717                 use_uuid = u;
1718         else if (hwaddr_aton(uuid, addr) == 0)
1719                 use_addr = addr;
1720         else
1721                 return -1;
1722         return wps_er_pbc(wpa_s->wps_er, use_uuid, use_addr);
1723 }
1724
1725
1726 int wpas_wps_er_learn(struct wpa_supplicant *wpa_s, const char *uuid,
1727                       const char *pin)
1728 {
1729         u8 u[UUID_LEN], *use_uuid = NULL;
1730         u8 addr[ETH_ALEN], *use_addr = NULL;
1731
1732         if (uuid_str2bin(uuid, u) == 0)
1733                 use_uuid = u;
1734         else if (hwaddr_aton(uuid, addr) == 0)
1735                 use_addr = addr;
1736         else
1737                 return -1;
1738
1739         return wps_er_learn(wpa_s->wps_er, use_uuid, use_addr, (const u8 *) pin,
1740                             os_strlen(pin));
1741 }
1742
1743
1744 static int wpas_wps_network_to_cred(struct wpa_ssid *ssid,
1745                                     struct wps_credential *cred)
1746 {
1747         os_memset(cred, 0, sizeof(*cred));
1748         if (ssid->ssid_len > 32)
1749                 return -1;
1750         os_memcpy(cred->ssid, ssid->ssid, ssid->ssid_len);
1751         cred->ssid_len = ssid->ssid_len;
1752         if (ssid->key_mgmt & WPA_KEY_MGMT_PSK) {
1753                 cred->auth_type = (ssid->proto & WPA_PROTO_RSN) ?
1754                         WPS_AUTH_WPA2PSK : WPS_AUTH_WPAPSK;
1755                 if (ssid->pairwise_cipher & WPA_CIPHER_CCMP)
1756                         cred->encr_type = WPS_ENCR_AES;
1757                 else
1758                         cred->encr_type = WPS_ENCR_TKIP;
1759                 if (ssid->passphrase) {
1760                         cred->key_len = os_strlen(ssid->passphrase);
1761                         if (cred->key_len >= 64)
1762                                 return -1;
1763                         os_memcpy(cred->key, ssid->passphrase, cred->key_len);
1764                 } else if (ssid->psk_set) {
1765                         cred->key_len = 32;
1766                         os_memcpy(cred->key, ssid->psk, 32);
1767                 } else
1768                         return -1;
1769         } else {
1770                 cred->auth_type = WPS_AUTH_OPEN;
1771                 cred->encr_type = WPS_ENCR_NONE;
1772         }
1773
1774         return 0;
1775 }
1776
1777
1778 int wpas_wps_er_set_config(struct wpa_supplicant *wpa_s, const char *uuid,
1779                            int id)
1780 {
1781         u8 u[UUID_LEN], *use_uuid = NULL;
1782         u8 addr[ETH_ALEN], *use_addr = NULL;
1783         struct wpa_ssid *ssid;
1784         struct wps_credential cred;
1785
1786         if (uuid_str2bin(uuid, u) == 0)
1787                 use_uuid = u;
1788         else if (hwaddr_aton(uuid, addr) == 0)
1789                 use_addr = addr;
1790         else
1791                 return -1;
1792         ssid = wpa_config_get_network(wpa_s->conf, id);
1793         if (ssid == NULL || ssid->ssid == NULL)
1794                 return -1;
1795
1796         if (wpas_wps_network_to_cred(ssid, &cred) < 0)
1797                 return -1;
1798         return wps_er_set_config(wpa_s->wps_er, use_uuid, use_addr, &cred);
1799 }
1800
1801
1802 int wpas_wps_er_config(struct wpa_supplicant *wpa_s, const char *uuid,
1803                        const char *pin, struct wps_new_ap_settings *settings)
1804 {
1805         u8 u[UUID_LEN], *use_uuid = NULL;
1806         u8 addr[ETH_ALEN], *use_addr = NULL;
1807         struct wps_credential cred;
1808         size_t len;
1809
1810         if (uuid_str2bin(uuid, u) == 0)
1811                 use_uuid = u;
1812         else if (hwaddr_aton(uuid, addr) == 0)
1813                 use_addr = addr;
1814         else
1815                 return -1;
1816         if (settings->ssid_hex == NULL || settings->auth == NULL ||
1817             settings->encr == NULL || settings->key_hex == NULL)
1818                 return -1;
1819
1820         os_memset(&cred, 0, sizeof(cred));
1821         len = os_strlen(settings->ssid_hex);
1822         if ((len & 1) || len > 2 * sizeof(cred.ssid) ||
1823             hexstr2bin(settings->ssid_hex, cred.ssid, len / 2))
1824                 return -1;
1825         cred.ssid_len = len / 2;
1826
1827         len = os_strlen(settings->key_hex);
1828         if ((len & 1) || len > 2 * sizeof(cred.key) ||
1829             hexstr2bin(settings->key_hex, cred.key, len / 2))
1830                 return -1;
1831         cred.key_len = len / 2;
1832
1833         if (os_strcmp(settings->auth, "OPEN") == 0)
1834                 cred.auth_type = WPS_AUTH_OPEN;
1835         else if (os_strcmp(settings->auth, "WPAPSK") == 0)
1836                 cred.auth_type = WPS_AUTH_WPAPSK;
1837         else if (os_strcmp(settings->auth, "WPA2PSK") == 0)
1838                 cred.auth_type = WPS_AUTH_WPA2PSK;
1839         else
1840                 return -1;
1841
1842         if (os_strcmp(settings->encr, "NONE") == 0)
1843                 cred.encr_type = WPS_ENCR_NONE;
1844         else if (os_strcmp(settings->encr, "WEP") == 0)
1845                 cred.encr_type = WPS_ENCR_WEP;
1846         else if (os_strcmp(settings->encr, "TKIP") == 0)
1847                 cred.encr_type = WPS_ENCR_TKIP;
1848         else if (os_strcmp(settings->encr, "CCMP") == 0)
1849                 cred.encr_type = WPS_ENCR_AES;
1850         else
1851                 return -1;
1852
1853         return wps_er_config(wpa_s->wps_er, use_uuid, use_addr,
1854                              (const u8 *) pin, os_strlen(pin), &cred);
1855 }
1856
1857
1858 #ifdef CONFIG_WPS_NFC
1859 struct wpabuf * wpas_wps_er_nfc_config_token(struct wpa_supplicant *wpa_s,
1860                                              int ndef, const char *uuid)
1861 {
1862         struct wpabuf *ret;
1863         u8 u[UUID_LEN], *use_uuid = NULL;
1864         u8 addr[ETH_ALEN], *use_addr = NULL;
1865
1866         if (!wpa_s->wps_er)
1867                 return NULL;
1868
1869         if (uuid_str2bin(uuid, u) == 0)
1870                 use_uuid = u;
1871         else if (hwaddr_aton(uuid, addr) == 0)
1872                 use_addr = addr;
1873         else
1874                 return NULL;
1875
1876         ret = wps_er_nfc_config_token(wpa_s->wps_er, use_uuid, use_addr);
1877         if (ndef && ret) {
1878                 struct wpabuf *tmp;
1879                 tmp = ndef_build_wifi(ret);
1880                 wpabuf_free(ret);
1881                 if (tmp == NULL)
1882                         return NULL;
1883                 ret = tmp;
1884         }
1885
1886         return ret;
1887 }
1888 #endif /* CONFIG_WPS_NFC */
1889
1890
1891 static int callbacks_pending = 0;
1892
1893 static void wpas_wps_terminate_cb(void *ctx)
1894 {
1895         wpa_printf(MSG_DEBUG, "WPS ER: Terminated");
1896         if (--callbacks_pending <= 0)
1897                 eloop_terminate();
1898 }
1899 #endif /* CONFIG_WPS_ER */
1900
1901
1902 int wpas_wps_terminate_pending(struct wpa_supplicant *wpa_s)
1903 {
1904 #ifdef CONFIG_WPS_ER
1905         if (wpa_s->wps_er) {
1906                 callbacks_pending++;
1907                 wps_er_deinit(wpa_s->wps_er, wpas_wps_terminate_cb, wpa_s);
1908                 wpa_s->wps_er = NULL;
1909                 return 1;
1910         }
1911 #endif /* CONFIG_WPS_ER */
1912         return 0;
1913 }
1914
1915
1916 int wpas_wps_in_progress(struct wpa_supplicant *wpa_s)
1917 {
1918         struct wpa_ssid *ssid;
1919
1920         for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1921                 if (!ssid->disabled && ssid->key_mgmt == WPA_KEY_MGMT_WPS)
1922                         return 1;
1923         }
1924
1925         return 0;
1926 }
1927
1928
1929 void wpas_wps_update_config(struct wpa_supplicant *wpa_s)
1930 {
1931         struct wps_context *wps = wpa_s->wps;
1932
1933         if (wps == NULL)
1934                 return;
1935
1936         if (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS) {
1937                 wps->config_methods = wps_config_methods_str2bin(
1938                         wpa_s->conf->config_methods);
1939                 if ((wps->config_methods &
1940                      (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) ==
1941                     (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
1942                         wpa_printf(MSG_ERROR, "WPS: Both Label and Display "
1943                                    "config methods are not allowed at the "
1944                                    "same time");
1945                         wps->config_methods &= ~WPS_CONFIG_LABEL;
1946                 }
1947         }
1948         wps->config_methods = wps_fix_config_methods(wps->config_methods);
1949         wps->dev.config_methods = wps->config_methods;
1950
1951         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
1952                 os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type,
1953                           WPS_DEV_TYPE_LEN);
1954
1955         if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE) {
1956                 wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
1957                 os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type,
1958                           wps->dev.num_sec_dev_types * WPS_DEV_TYPE_LEN);
1959         }
1960
1961         if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION)
1962                 wpas_wps_set_vendor_ext_m1(wpa_s, wps);
1963
1964         if (wpa_s->conf->changed_parameters & CFG_CHANGED_OS_VERSION)
1965                 wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
1966
1967         if (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID)
1968                 wpas_wps_set_uuid(wpa_s, wps);
1969
1970         if (wpa_s->conf->changed_parameters &
1971             (CFG_CHANGED_DEVICE_NAME | CFG_CHANGED_WPS_STRING)) {
1972                 /* Update pointers to make sure they refer current values */
1973                 wps->dev.device_name = wpa_s->conf->device_name;
1974                 wps->dev.manufacturer = wpa_s->conf->manufacturer;
1975                 wps->dev.model_name = wpa_s->conf->model_name;
1976                 wps->dev.model_number = wpa_s->conf->model_number;
1977                 wps->dev.serial_number = wpa_s->conf->serial_number;
1978         }
1979 }
1980
1981
1982 #ifdef CONFIG_WPS_NFC
1983
1984 #ifdef CONFIG_WPS_ER
1985 static struct wpabuf *
1986 wpas_wps_network_config_token(struct wpa_supplicant *wpa_s, int ndef,
1987                               struct wpa_ssid *ssid)
1988 {
1989         struct wpabuf *ret;
1990         struct wps_credential cred;
1991
1992         if (wpas_wps_network_to_cred(ssid, &cred) < 0)
1993                 return NULL;
1994
1995         ret = wps_er_config_token_from_cred(wpa_s->wps, &cred);
1996
1997         if (ndef && ret) {
1998                 struct wpabuf *tmp;
1999                 tmp = ndef_build_wifi(ret);
2000                 wpabuf_free(ret);
2001                 if (tmp == NULL)
2002                         return NULL;
2003                 ret = tmp;
2004         }
2005
2006         return ret;
2007 }
2008 #endif /* CONFIG_WPS_ER */
2009
2010
2011 struct wpabuf * wpas_wps_nfc_config_token(struct wpa_supplicant *wpa_s,
2012                                           int ndef, const char *id_str)
2013 {
2014 #ifdef CONFIG_WPS_ER
2015         if (id_str) {
2016                 int id;
2017                 char *end = NULL;
2018                 struct wpa_ssid *ssid;
2019
2020                 id = strtol(id_str, &end, 10);
2021                 if (end && *end)
2022                         return NULL;
2023
2024                 ssid = wpa_config_get_network(wpa_s->conf, id);
2025                 if (ssid == NULL)
2026                         return NULL;
2027                 return wpas_wps_network_config_token(wpa_s, ndef, ssid);
2028         }
2029 #endif /* CONFIG_WPS_ER */
2030 #ifdef CONFIG_AP
2031         if (wpa_s->ap_iface)
2032                 return wpas_ap_wps_nfc_config_token(wpa_s, ndef);
2033 #endif /* CONFIG_AP */
2034         return NULL;
2035 }
2036
2037
2038 struct wpabuf * wpas_wps_nfc_token(struct wpa_supplicant *wpa_s, int ndef)
2039 {
2040         if (wpa_s->conf->wps_nfc_pw_from_config) {
2041                 return wps_nfc_token_build(ndef,
2042                                            wpa_s->conf->wps_nfc_dev_pw_id,
2043                                            wpa_s->conf->wps_nfc_dh_pubkey,
2044                                            wpa_s->conf->wps_nfc_dev_pw);
2045         }
2046
2047         return wps_nfc_token_gen(ndef, &wpa_s->conf->wps_nfc_dev_pw_id,
2048                                  &wpa_s->conf->wps_nfc_dh_pubkey,
2049                                  &wpa_s->conf->wps_nfc_dh_privkey,
2050                                  &wpa_s->conf->wps_nfc_dev_pw);
2051 }
2052
2053
2054 int wpas_wps_start_nfc(struct wpa_supplicant *wpa_s, const u8 *bssid)
2055 {
2056         struct wps_context *wps = wpa_s->wps;
2057         char pw[32 * 2 + 1];
2058
2059         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL ||
2060             wpa_s->conf->wps_nfc_dh_privkey == NULL ||
2061             wpa_s->conf->wps_nfc_dev_pw == NULL)
2062                 return -1;
2063
2064         dh5_free(wps->dh_ctx);
2065         wpabuf_free(wps->dh_pubkey);
2066         wpabuf_free(wps->dh_privkey);
2067         wps->dh_privkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
2068         wps->dh_pubkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
2069         if (wps->dh_privkey == NULL || wps->dh_pubkey == NULL) {
2070                 wps->dh_ctx = NULL;
2071                 wpabuf_free(wps->dh_pubkey);
2072                 wps->dh_pubkey = NULL;
2073                 wpabuf_free(wps->dh_privkey);
2074                 wps->dh_privkey = NULL;
2075                 return -1;
2076         }
2077         wps->dh_ctx = dh5_init_fixed(wps->dh_privkey, wps->dh_pubkey);
2078         if (wps->dh_ctx == NULL) {
2079                 wpabuf_free(wps->dh_pubkey);
2080                 wps->dh_pubkey = NULL;
2081                 wpabuf_free(wps->dh_privkey);
2082                 wps->dh_privkey = NULL;
2083                 return -1;
2084         }
2085
2086         wpa_snprintf_hex_uppercase(pw, sizeof(pw),
2087                                    wpabuf_head(wpa_s->conf->wps_nfc_dev_pw),
2088                                    wpabuf_len(wpa_s->conf->wps_nfc_dev_pw));
2089         return wpas_wps_start_pin(wpa_s, bssid, pw, 0,
2090                                   wpa_s->conf->wps_nfc_dev_pw_id);
2091 }
2092
2093
2094 static int wpas_wps_use_cred(struct wpa_supplicant *wpa_s,
2095                              struct wps_parse_attr *attr)
2096 {
2097         wpa_s->wps_ap_channel = 0;
2098
2099         /*
2100          * Disable existing networks temporarily to allow the newly learned
2101          * credential to be preferred. Enable the temporarily disabled networks
2102          * after 10 seconds.
2103          */
2104         wpas_wps_temp_disable(wpa_s, NULL);
2105         eloop_register_timeout(10, 0, wpas_wps_reenable_networks_cb, wpa_s,
2106                                NULL);
2107
2108         if (wps_oob_use_cred(wpa_s->wps, attr) < 0)
2109                 return -1;
2110
2111         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
2112                 return 0;
2113
2114         wpa_printf(MSG_DEBUG, "WPS: Request reconnection with new network "
2115                    "based on the received credential added");
2116         wpa_s->normal_scans = 0;
2117         wpa_supplicant_reinit_autoscan(wpa_s);
2118         if (wpa_s->wps_ap_channel) {
2119                 u16 chan = wpa_s->wps_ap_channel;
2120                 int freq = 0;
2121
2122                 if (chan >= 1 && chan <= 13)
2123                         freq = 2407 + 5 * chan;
2124                 else if (chan == 14)
2125                         freq = 2484;
2126                 else if (chan >= 30)
2127                         freq = 5000 + 5 * chan;
2128
2129                 if (freq) {
2130                         wpa_printf(MSG_DEBUG, "WPS: Credential indicated "
2131                                    "AP channel %u -> %u MHz", chan, freq);
2132                         wpa_s->after_wps = 5;
2133                         wpa_s->wps_freq = freq;
2134                 }
2135         }
2136         wpa_s->disconnected = 0;
2137         wpa_s->reassociate = 1;
2138         wpa_supplicant_req_scan(wpa_s, 0, 0);
2139
2140         return 0;
2141 }
2142
2143
2144 #ifdef CONFIG_WPS_ER
2145 static int wpas_wps_add_nfc_password_token(struct wpa_supplicant *wpa_s,
2146                                            struct wps_parse_attr *attr)
2147 {
2148         return wps_registrar_add_nfc_password_token(
2149                 wpa_s->wps->registrar, attr->oob_dev_password,
2150                 attr->oob_dev_password_len);
2151 }
2152 #endif /* CONFIG_WPS_ER */
2153
2154
2155 static int wpas_wps_nfc_tag_process(struct wpa_supplicant *wpa_s,
2156                                     const struct wpabuf *wps)
2157 {
2158         struct wps_parse_attr attr;
2159
2160         wpa_hexdump_buf(MSG_DEBUG, "WPS: Received NFC tag payload", wps);
2161
2162         if (wps_parse_msg(wps, &attr)) {
2163                 wpa_printf(MSG_DEBUG, "WPS: Ignore invalid data from NFC tag");
2164                 return -1;
2165         }
2166
2167         if (attr.num_cred)
2168                 return wpas_wps_use_cred(wpa_s, &attr);
2169
2170 #ifdef CONFIG_WPS_ER
2171         if (attr.oob_dev_password)
2172                 return wpas_wps_add_nfc_password_token(wpa_s, &attr);
2173 #endif /* CONFIG_WPS_ER */
2174
2175         wpa_printf(MSG_DEBUG, "WPS: Ignore unrecognized NFC tag");
2176         return -1;
2177 }
2178
2179
2180 int wpas_wps_nfc_tag_read(struct wpa_supplicant *wpa_s,
2181                           const struct wpabuf *data)
2182 {
2183         const struct wpabuf *wps = data;
2184         struct wpabuf *tmp = NULL;
2185         int ret;
2186
2187         if (wpabuf_len(data) < 4)
2188                 return -1;
2189
2190         if (*wpabuf_head_u8(data) != 0x10) {
2191                 /* Assume this contains full NDEF record */
2192                 tmp = ndef_parse_wifi(data);
2193                 if (tmp == NULL) {
2194                         wpa_printf(MSG_DEBUG, "WPS: Could not parse NDEF");
2195                         return -1;
2196                 }
2197                 wps = tmp;
2198         }
2199
2200         ret = wpas_wps_nfc_tag_process(wpa_s, wps);
2201         wpabuf_free(tmp);
2202         return ret;
2203 }
2204
2205
2206 struct wpabuf * wpas_wps_nfc_handover_req(struct wpa_supplicant *wpa_s, int cr)
2207 {
2208         if (cr)
2209                 return ndef_build_wifi_hc(1);
2210         return ndef_build_wifi_hr();
2211 }
2212
2213
2214 #ifdef CONFIG_WPS_NFC
2215 struct wpabuf * wpas_wps_er_nfc_handover_sel(struct wpa_supplicant *wpa_s,
2216                                              int ndef, const char *uuid)
2217 {
2218 #ifdef CONFIG_WPS_ER
2219         struct wpabuf *ret;
2220         u8 u[UUID_LEN], *use_uuid = NULL;
2221         u8 addr[ETH_ALEN], *use_addr = NULL;
2222
2223         if (!wpa_s->wps_er)
2224                 return NULL;
2225
2226         if (uuid == NULL)
2227                 return NULL;
2228         if (uuid_str2bin(uuid, u) == 0)
2229                 use_uuid = u;
2230         else if (hwaddr_aton(uuid, addr) == 0)
2231                 use_addr = addr;
2232         else
2233                 return NULL;
2234
2235         /*
2236          * Handover Select carrier record for WPS uses the same format as
2237          * configuration token.
2238          */
2239         ret = wps_er_nfc_config_token(wpa_s->wps_er, use_uuid, use_addr);
2240         if (ndef && ret) {
2241                 struct wpabuf *tmp;
2242                 tmp = ndef_build_wifi(ret);
2243                 wpabuf_free(ret);
2244                 if (tmp == NULL)
2245                         return NULL;
2246                 ret = tmp;
2247         }
2248
2249         return ret;
2250 #else /* CONFIG_WPS_ER */
2251         return NULL;
2252 #endif /* CONFIG_WPS_ER */
2253 }
2254 #endif /* CONFIG_WPS_NFC */
2255
2256
2257 struct wpabuf * wpas_wps_nfc_handover_sel(struct wpa_supplicant *wpa_s,
2258                                           int ndef, int cr, const char *uuid)
2259 {
2260         struct wpabuf *ret;
2261         if (!cr)
2262                 return NULL;
2263         ret = wpas_ap_wps_nfc_handover_sel(wpa_s, ndef);
2264         if (ret)
2265                 return ret;
2266         return wpas_wps_er_nfc_handover_sel(wpa_s, ndef, uuid);
2267 }
2268
2269
2270 int wpas_wps_nfc_rx_handover_req(struct wpa_supplicant *wpa_s,
2271                                  const struct wpabuf *data)
2272 {
2273         /* TODO */
2274         return -1;
2275 }
2276
2277
2278 int wpas_wps_nfc_rx_handover_sel(struct wpa_supplicant *wpa_s,
2279                                  const struct wpabuf *data)
2280 {
2281         struct wpabuf *wps;
2282         int ret;
2283
2284         wps = ndef_parse_wifi(data);
2285         if (wps == NULL)
2286                 return -1;
2287         wpa_printf(MSG_DEBUG, "WPS: Received application/vnd.wfa.wsc "
2288                    "payload from NFC connection handover");
2289         wpa_hexdump_buf_key(MSG_DEBUG, "WPS: NFC payload", wps);
2290         ret = wpas_wps_nfc_tag_process(wpa_s, wps);
2291         wpabuf_free(wps);
2292
2293         return ret;
2294 }
2295
2296
2297 int wpas_wps_nfc_report_handover(struct wpa_supplicant *wpa_s,
2298                                  const struct wpabuf *req,
2299                                  const struct wpabuf *sel)
2300 {
2301         wpa_printf(MSG_DEBUG, "NFC: WPS connection handover reported");
2302         wpa_hexdump_buf_key(MSG_DEBUG, "WPS: Carrier record in request", req);
2303         wpa_hexdump_buf_key(MSG_DEBUG, "WPS: Carrier record in select", sel);
2304         return wpas_wps_nfc_rx_handover_sel(wpa_s, sel);
2305 }
2306
2307 #endif /* CONFIG_WPS_NFC */
2308
2309
2310 extern int wpa_debug_level;
2311
2312 static void wpas_wps_dump_ap_info(struct wpa_supplicant *wpa_s)
2313 {
2314         size_t i;
2315         struct os_time now;
2316
2317         if (wpa_debug_level > MSG_DEBUG)
2318                 return;
2319
2320         if (wpa_s->wps_ap == NULL)
2321                 return;
2322
2323         os_get_time(&now);
2324
2325         for (i = 0; i < wpa_s->num_wps_ap; i++) {
2326                 struct wps_ap_info *ap = &wpa_s->wps_ap[i];
2327                 struct wpa_blacklist *e = wpa_blacklist_get(wpa_s, ap->bssid);
2328
2329                 wpa_printf(MSG_DEBUG, "WPS: AP[%d] " MACSTR " type=%d "
2330                            "tries=%d last_attempt=%d sec ago blacklist=%d",
2331                            (int) i, MAC2STR(ap->bssid), ap->type, ap->tries,
2332                            ap->last_attempt.sec > 0 ?
2333                            (int) now.sec - (int) ap->last_attempt.sec : -1,
2334                            e ? e->count : 0);
2335         }
2336 }
2337
2338
2339 static struct wps_ap_info * wpas_wps_get_ap_info(struct wpa_supplicant *wpa_s,
2340                                                  const u8 *bssid)
2341 {
2342         size_t i;
2343
2344         if (wpa_s->wps_ap == NULL)
2345                 return NULL;
2346
2347         for (i = 0; i < wpa_s->num_wps_ap; i++) {
2348                 struct wps_ap_info *ap = &wpa_s->wps_ap[i];
2349                 if (os_memcmp(ap->bssid, bssid, ETH_ALEN) == 0)
2350                         return ap;
2351         }
2352
2353         return NULL;
2354 }
2355
2356
2357 static void wpas_wps_update_ap_info_bss(struct wpa_supplicant *wpa_s,
2358                                         struct wpa_scan_res *res)
2359 {
2360         struct wpabuf *wps;
2361         enum wps_ap_info_type type;
2362         struct wps_ap_info *ap;
2363         int r;
2364
2365         if (wpa_scan_get_vendor_ie(res, WPS_IE_VENDOR_TYPE) == NULL)
2366                 return;
2367
2368         wps = wpa_scan_get_vendor_ie_multi(res, WPS_IE_VENDOR_TYPE);
2369         if (wps == NULL)
2370                 return;
2371
2372         r = wps_is_addr_authorized(wps, wpa_s->own_addr, 1);
2373         if (r == 2)
2374                 type = WPS_AP_SEL_REG_OUR;
2375         else if (r == 1)
2376                 type = WPS_AP_SEL_REG;
2377         else
2378                 type = WPS_AP_NOT_SEL_REG;
2379
2380         wpabuf_free(wps);
2381
2382         ap = wpas_wps_get_ap_info(wpa_s, res->bssid);
2383         if (ap) {
2384                 if (ap->type != type) {
2385                         wpa_printf(MSG_DEBUG, "WPS: AP " MACSTR
2386                                    " changed type %d -> %d",
2387                                    MAC2STR(res->bssid), ap->type, type);
2388                         ap->type = type;
2389                         if (type != WPS_AP_NOT_SEL_REG)
2390                                 wpa_blacklist_del(wpa_s, ap->bssid);
2391                 }
2392                 return;
2393         }
2394
2395         ap = os_realloc_array(wpa_s->wps_ap, wpa_s->num_wps_ap + 1,
2396                               sizeof(struct wps_ap_info));
2397         if (ap == NULL)
2398                 return;
2399
2400         wpa_s->wps_ap = ap;
2401         ap = &wpa_s->wps_ap[wpa_s->num_wps_ap];
2402         wpa_s->num_wps_ap++;
2403
2404         os_memset(ap, 0, sizeof(*ap));
2405         os_memcpy(ap->bssid, res->bssid, ETH_ALEN);
2406         ap->type = type;
2407         wpa_printf(MSG_DEBUG, "WPS: AP " MACSTR " type %d added",
2408                    MAC2STR(ap->bssid), ap->type);
2409 }
2410
2411
2412 void wpas_wps_update_ap_info(struct wpa_supplicant *wpa_s,
2413                              struct wpa_scan_results *scan_res)
2414 {
2415         size_t i;
2416
2417         for (i = 0; i < scan_res->num; i++)
2418                 wpas_wps_update_ap_info_bss(wpa_s, scan_res->res[i]);
2419
2420         wpas_wps_dump_ap_info(wpa_s);
2421 }
2422
2423
2424 void wpas_wps_notify_assoc(struct wpa_supplicant *wpa_s, const u8 *bssid)
2425 {
2426         struct wps_ap_info *ap;
2427         if (!wpa_s->wps_ap_iter)
2428                 return;
2429         ap = wpas_wps_get_ap_info(wpa_s, bssid);
2430         if (ap == NULL)
2431                 return;
2432         ap->tries++;
2433         os_get_time(&ap->last_attempt);
2434 }