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