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