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         eloop_cancel_timeout(wpas_wps_clear_timeout, wpa_s, NULL);
 870
 871         /* Remove any existing WPS network from configuration */
 872         ssid = wpa_s->conf->ssid;
 873         while (ssid) {
 874                 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
 875                         if (ssid == wpa_s->current_ssid) {
 876                                 wpa_supplicant_deauthenticate(
 877                                         wpa_s, WLAN_REASON_DEAUTH_LEAVING);
 878                         }
 879                         id = ssid->id;
 880                         remove_ssid = ssid;
 881                 } else
 882                         id = -1;
 883                 ssid = ssid->next;
 884                 if (id >= 0) {
 885                         if (prev_current == remove_ssid) {
 886                                 wpa_sm_set_config(wpa_s->wpa, NULL);
 887                                 eapol_sm_notify_config(wpa_s->eapol, NULL,
 888                                                        NULL);
 889                         }
 890                         wpas_notify_network_removed(wpa_s, remove_ssid);
 891                         wpa_config_remove_network(wpa_s->conf, id);
 892                 }
 893         }
 894
 895         wpas_wps_clear_ap_info(wpa_s);
 896 }
 897
 898
 899 static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx)
 900 {
 901         struct wpa_supplicant *wpa_s = eloop_ctx;
 902         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_TIMEOUT "Requested operation timed "
 903                 "out");
 904         wpas_clear_wps(wpa_s);
 905 }
 906
 907
 908 static struct wpa_ssid * wpas_wps_add_network(struct wpa_supplicant *wpa_s,
 909                                               int registrar, const u8 *bssid)
 910 {
 911         struct wpa_ssid *ssid;
 912
 913         ssid = wpa_config_add_network(wpa_s->conf);
 914         if (ssid == NULL)
 915                 return NULL;
 916         wpas_notify_network_added(wpa_s, ssid);
 917         wpa_config_set_network_defaults(ssid);
 918         ssid->temporary = 1;
 919         if (wpa_config_set(ssid, "key_mgmt", "WPS", 0) < 0 ||
 920             wpa_config_set(ssid, "eap", "WSC", 0) < 0 ||
 921             wpa_config_set(ssid, "identity", registrar ?
 922                            "\"" WSC_ID_REGISTRAR "\"" :
 923                            "\"" WSC_ID_ENROLLEE "\"", 0) < 0) {
 924                 wpas_notify_network_removed(wpa_s, ssid);
 925                 wpa_config_remove_network(wpa_s->conf, ssid->id);
 926                 return NULL;
 927         }
 928
 929         if (bssid) {
 930 #ifndef CONFIG_P2P
 931                 struct wpa_bss *bss;
 932                 int count = 0;
 933 #endif /* CONFIG_P2P */
 934
 935                 os_memcpy(ssid->bssid, bssid, ETH_ALEN);
 936                 ssid->bssid_set = 1;
 937
 938                 /*
 939                  * Note: With P2P, the SSID may change at the time the WPS
 940                  * provisioning is started, so better not filter the AP based
 941                  * on the current SSID in the scan results.
 942                  */
 943 #ifndef CONFIG_P2P
 944                 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
 945                         if (os_memcmp(bssid, bss->bssid, ETH_ALEN) != 0)
 946                                 continue;
 947
 948                         os_free(ssid->ssid);
 949                         ssid->ssid = os_malloc(bss->ssid_len);
 950                         if (ssid->ssid == NULL)
 951                                 break;
 952                         os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
 953                         ssid->ssid_len = bss->ssid_len;
 954                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Picked SSID from "
 955                                           "scan results",
 956                                           ssid->ssid, ssid->ssid_len);
 957                         count++;
 958                 }
 959
 960                 if (count > 1) {
 961                         wpa_printf(MSG_DEBUG, "WPS: More than one SSID found "
 962                                    "for the AP; use wildcard");
 963                         os_free(ssid->ssid);
 964                         ssid->ssid = NULL;
 965                         ssid->ssid_len = 0;
 966                 }
 967 #endif /* CONFIG_P2P */
 968         }
 969
 970         return ssid;
 971 }
 972
 973
 974 static void wpas_wps_temp_disable(struct wpa_supplicant *wpa_s,
 975                                   struct wpa_ssid *selected)
 976 {
 977         struct wpa_ssid *ssid;
 978
 979         if (wpa_s->current_ssid)
 980                 wpa_supplicant_deauthenticate(
 981                         wpa_s, WLAN_REASON_DEAUTH_LEAVING);
 982
 983         /* Mark all other networks disabled and trigger reassociation */
 984         ssid = wpa_s->conf->ssid;
 985         while (ssid) {
 986                 int was_disabled = ssid->disabled;
 987                 ssid->disabled_for_connect = 0;
 988                 /*
 989                  * In case the network object corresponds to a persistent group
 990                  * then do not send out network disabled signal. In addition,
 991                  * do not change disabled status of persistent network objects
 992                  * from 2 to 1 should we connect to another network.
 993                  */
 994                 if (was_disabled != 2) {
 995                         ssid->disabled = ssid != selected;
 996                         if (was_disabled != ssid->disabled) {
 997                                 if (ssid->disabled)
 998                                         ssid->disabled_for_connect = 1;
 999                                 wpas_notify_network_enabled_changed(wpa_s,
1000                                                                     ssid);
1001                         }
1002                 }
1003                 ssid = ssid->next;
1004         }
1005 }
1006
1007
1008 static void wpas_wps_reassoc(struct wpa_supplicant *wpa_s,
1009                              struct wpa_ssid *selected, const u8 *bssid)
1010 {
1011         struct wpa_bss *bss;
1012
1013         wpa_s->after_wps = 0;
1014         wpa_s->known_wps_freq = 0;
1015         if (bssid) {
1016                 bss = wpa_bss_get_bssid_latest(wpa_s, bssid);
1017                 if (bss && bss->freq > 0) {
1018                         wpa_s->known_wps_freq = 1;
1019                         wpa_s->wps_freq = bss->freq;
1020                 }
1021         }
1022
1023         wpas_wps_temp_disable(wpa_s, selected);
1024
1025         wpa_s->disconnected = 0;
1026         wpa_s->reassociate = 1;
1027         wpa_s->scan_runs = 0;
1028         wpa_s->normal_scans = 0;
1029         wpa_s->wps_success = 0;
1030         wpa_s->blacklist_cleared = 0;
1031
1032         wpa_supplicant_cancel_sched_scan(wpa_s);
1033         wpa_supplicant_req_scan(wpa_s, 0, 0);
1034 }
1035
1036
1037 int wpas_wps_start_pbc(struct wpa_supplicant *wpa_s, const u8 *bssid,
1038                        int p2p_group)
1039 {
1040         struct wpa_ssid *ssid;
1041         wpas_clear_wps(wpa_s);
1042         ssid = wpas_wps_add_network(wpa_s, 0, bssid);
1043         if (ssid == NULL)
1044                 return -1;
1045         ssid->temporary = 1;
1046         ssid->p2p_group = p2p_group;
1047 #ifdef CONFIG_P2P
1048         if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) {
1049                 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1);
1050                 if (ssid->ssid) {
1051                         ssid->ssid_len = wpa_s->go_params->ssid_len;
1052                         os_memcpy(ssid->ssid, wpa_s->go_params->ssid,
1053                                   ssid->ssid_len);
1054                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP "
1055                                           "SSID", ssid->ssid, ssid->ssid_len);
1056                 }
1057         }
1058 #endif /* CONFIG_P2P */
1059         if (wpa_config_set(ssid, "phase1", "\"pbc=1\"", 0) < 0)
1060                 return -1;
1061         if (wpa_s->wps_fragment_size)
1062                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
1063         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
1064                                wpa_s, NULL);
1065         wpas_wps_reassoc(wpa_s, ssid, bssid);
1066         return 0;
1067 }
1068
1069
1070 int wpas_wps_start_pin(struct wpa_supplicant *wpa_s, const u8 *bssid,
1071                        const char *pin, int p2p_group, u16 dev_pw_id)
1072 {
1073         struct wpa_ssid *ssid;
1074         char val[128];
1075         unsigned int rpin = 0;
1076
1077         wpas_clear_wps(wpa_s);
1078         ssid = wpas_wps_add_network(wpa_s, 0, bssid);
1079         if (ssid == NULL)
1080                 return -1;
1081         ssid->temporary = 1;
1082         ssid->p2p_group = p2p_group;
1083 #ifdef CONFIG_P2P
1084         if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) {
1085                 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1);
1086                 if (ssid->ssid) {
1087                         ssid->ssid_len = wpa_s->go_params->ssid_len;
1088                         os_memcpy(ssid->ssid, wpa_s->go_params->ssid,
1089                                   ssid->ssid_len);
1090                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP "
1091                                           "SSID", ssid->ssid, ssid->ssid_len);
1092                 }
1093         }
1094 #endif /* CONFIG_P2P */
1095         if (pin)
1096                 os_snprintf(val, sizeof(val), "\"pin=%s dev_pw_id=%u\"",
1097                             pin, dev_pw_id);
1098         else {
1099                 rpin = wps_generate_pin();
1100                 os_snprintf(val, sizeof(val), "\"pin=%08d dev_pw_id=%u\"",
1101                             rpin, dev_pw_id);
1102         }
1103         if (wpa_config_set(ssid, "phase1", val, 0) < 0)
1104                 return -1;
1105         if (wpa_s->wps_fragment_size)
1106                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
1107         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
1108                                wpa_s, NULL);
1109         wpa_s->wps_ap_iter = 1;
1110         wpas_wps_reassoc(wpa_s, ssid, bssid);
1111         return rpin;
1112 }
1113
1114
1115 /* Cancel the wps pbc/pin requests */
1116 int wpas_wps_cancel(struct wpa_supplicant *wpa_s)
1117 {
1118 #ifdef CONFIG_AP
1119         if (wpa_s->ap_iface) {
1120                 wpa_printf(MSG_DEBUG, "WPS: Cancelling in AP mode");
1121                 return wpa_supplicant_ap_wps_cancel(wpa_s);
1122         }
1123 #endif /* CONFIG_AP */
1124
1125         if (wpa_s->wpa_state == WPA_SCANNING ||
1126             wpa_s->wpa_state == WPA_DISCONNECTED) {
1127                 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - cancel scan");
1128                 wpa_supplicant_cancel_scan(wpa_s);
1129                 wpas_clear_wps(wpa_s);
1130         } else if (wpa_s->wpa_state >= WPA_ASSOCIATED) {
1131                 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - "
1132                            "deauthenticate");
1133                 wpa_supplicant_deauthenticate(wpa_s,
1134                                               WLAN_REASON_DEAUTH_LEAVING);
1135                 wpas_clear_wps(wpa_s);
1136         } else {
1137                 wpas_wps_reenable_networks(wpa_s);
1138                 wpas_wps_clear_ap_info(wpa_s);
1139                 if (eloop_cancel_timeout(wpas_wps_clear_timeout, wpa_s, NULL) >
1140                     0)
1141                         wpas_clear_wps(wpa_s);
1142         }
1143
1144         wpa_s->after_wps = 0;
1145
1146         return 0;
1147 }
1148
1149
1150 int wpas_wps_start_reg(struct wpa_supplicant *wpa_s, const u8 *bssid,
1151                        const char *pin, struct wps_new_ap_settings *settings)
1152 {
1153         struct wpa_ssid *ssid;
1154         char val[200];
1155         char *pos, *end;
1156         int res;
1157
1158         if (!pin)
1159                 return -1;
1160         wpas_clear_wps(wpa_s);
1161         ssid = wpas_wps_add_network(wpa_s, 1, bssid);
1162         if (ssid == NULL)
1163                 return -1;
1164         ssid->temporary = 1;
1165         pos = val;
1166         end = pos + sizeof(val);
1167         res = os_snprintf(pos, end - pos, "\"pin=%s", pin);
1168         if (res < 0 || res >= end - pos)
1169                 return -1;
1170         pos += res;
1171         if (settings) {
1172                 res = os_snprintf(pos, end - pos, " new_ssid=%s new_auth=%s "
1173                                   "new_encr=%s new_key=%s",
1174                                   settings->ssid_hex, settings->auth,
1175                                   settings->encr, settings->key_hex);
1176                 if (res < 0 || res >= end - pos)
1177                         return -1;
1178                 pos += res;
1179         }
1180         res = os_snprintf(pos, end - pos, "\"");
1181         if (res < 0 || res >= end - pos)
1182                 return -1;
1183         if (wpa_config_set(ssid, "phase1", val, 0) < 0)
1184                 return -1;
1185         if (wpa_s->wps_fragment_size)
1186                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
1187         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
1188                                wpa_s, NULL);
1189         wpas_wps_reassoc(wpa_s, ssid, bssid);
1190         return 0;
1191 }
1192
1193
1194 static int wpas_wps_new_psk_cb(void *ctx, const u8 *mac_addr,
1195                                const u8 *p2p_dev_addr, const u8 *psk,
1196                                size_t psk_len)
1197 {
1198         if (is_zero_ether_addr(p2p_dev_addr)) {
1199                 wpa_printf(MSG_DEBUG,
1200                            "Received new WPA/WPA2-PSK from WPS for STA " MACSTR,
1201                            MAC2STR(mac_addr));
1202         } else {
1203                 wpa_printf(MSG_DEBUG,
1204                            "Received new WPA/WPA2-PSK from WPS for STA " MACSTR
1205                            " P2P Device Addr " MACSTR,
1206                            MAC2STR(mac_addr), MAC2STR(p2p_dev_addr));
1207         }
1208         wpa_hexdump_key(MSG_DEBUG, "Per-device PSK", psk, psk_len);
1209
1210         /* TODO */
1211
1212         return 0;
1213 }
1214
1215
1216 static void wpas_wps_pin_needed_cb(void *ctx, const u8 *uuid_e,
1217                                    const struct wps_device_data *dev)
1218 {
1219         char uuid[40], txt[400];
1220         int len;
1221         char devtype[WPS_DEV_TYPE_BUFSIZE];
1222         if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
1223                 return;
1224         wpa_printf(MSG_DEBUG, "WPS: PIN needed for UUID-E %s", uuid);
1225         len = os_snprintf(txt, sizeof(txt), "WPS-EVENT-PIN-NEEDED %s " MACSTR
1226                           " [%s|%s|%s|%s|%s|%s]",
1227                           uuid, MAC2STR(dev->mac_addr), dev->device_name,
1228                           dev->manufacturer, dev->model_name,
1229                           dev->model_number, dev->serial_number,
1230                           wps_dev_type_bin2str(dev->pri_dev_type, devtype,
1231                                                sizeof(devtype)));
1232         if (len > 0 && len < (int) sizeof(txt))
1233                 wpa_printf(MSG_INFO, "%s", txt);
1234 }
1235
1236
1237 static void wpas_wps_set_sel_reg_cb(void *ctx, int sel_reg, u16 dev_passwd_id,
1238                                     u16 sel_reg_config_methods)
1239 {
1240 #ifdef CONFIG_WPS_ER
1241         struct wpa_supplicant *wpa_s = ctx;
1242
1243         if (wpa_s->wps_er == NULL)
1244                 return;
1245         wpa_printf(MSG_DEBUG, "WPS ER: SetSelectedRegistrar - sel_reg=%d "
1246                    "dev_password_id=%u sel_reg_config_methods=0x%x",
1247                    sel_reg, dev_passwd_id, sel_reg_config_methods);
1248         wps_er_set_sel_reg(wpa_s->wps_er, sel_reg, dev_passwd_id,
1249                            sel_reg_config_methods);
1250 #endif /* CONFIG_WPS_ER */
1251 }
1252
1253
1254 static u16 wps_fix_config_methods(u16 config_methods)
1255 {
1256 #ifdef CONFIG_WPS2
1257         if ((config_methods &
1258              (WPS_CONFIG_DISPLAY | WPS_CONFIG_VIRT_DISPLAY |
1259               WPS_CONFIG_PHY_DISPLAY)) == WPS_CONFIG_DISPLAY) {
1260                 wpa_printf(MSG_INFO, "WPS: Converting display to "
1261                            "virtual_display for WPS 2.0 compliance");
1262                 config_methods |= WPS_CONFIG_VIRT_DISPLAY;
1263         }
1264         if ((config_methods &
1265              (WPS_CONFIG_PUSHBUTTON | WPS_CONFIG_VIRT_PUSHBUTTON |
1266               WPS_CONFIG_PHY_PUSHBUTTON)) == WPS_CONFIG_PUSHBUTTON) {
1267                 wpa_printf(MSG_INFO, "WPS: Converting push_button to "
1268                            "virtual_push_button for WPS 2.0 compliance");
1269                 config_methods |= WPS_CONFIG_VIRT_PUSHBUTTON;
1270         }
1271 #endif /* CONFIG_WPS2 */
1272
1273         return config_methods;
1274 }
1275
1276
1277 static void wpas_wps_set_uuid(struct wpa_supplicant *wpa_s,
1278                               struct wps_context *wps)
1279 {
1280         char buf[50];
1281         const char *src;
1282
1283         if (is_nil_uuid(wpa_s->conf->uuid)) {
1284                 struct wpa_supplicant *first;
1285                 first = wpa_s->global->ifaces;
1286                 while (first && first->next)
1287                         first = first->next;
1288                 if (first && first != wpa_s) {
1289                         if (wps != wpa_s->global->ifaces->wps)
1290                                 os_memcpy(wps->uuid,
1291                                           wpa_s->global->ifaces->wps->uuid,
1292                                           WPS_UUID_LEN);
1293                         src = "from the first interface";
1294                 } else {
1295                         uuid_gen_mac_addr(wpa_s->own_addr, wps->uuid);
1296                         src = "based on MAC address";
1297                 }
1298         } else {
1299                 os_memcpy(wps->uuid, wpa_s->conf->uuid, WPS_UUID_LEN);
1300                 src = "based on configuration";
1301         }
1302
1303         uuid_bin2str(wps->uuid, buf, sizeof(buf));
1304         wpa_dbg(wpa_s, MSG_DEBUG, "WPS: UUID %s: %s", src, buf);
1305 }
1306
1307
1308 static void wpas_wps_set_vendor_ext_m1(struct wpa_supplicant *wpa_s,
1309                                        struct wps_context *wps)
1310 {
1311         wpabuf_free(wps->dev.vendor_ext_m1);
1312         wps->dev.vendor_ext_m1 = NULL;
1313
1314         if (wpa_s->conf->wps_vendor_ext_m1) {
1315                 wps->dev.vendor_ext_m1 =
1316                         wpabuf_dup(wpa_s->conf->wps_vendor_ext_m1);
1317                 if (!wps->dev.vendor_ext_m1) {
1318                         wpa_printf(MSG_ERROR, "WPS: Cannot "
1319                                    "allocate memory for vendor_ext_m1");
1320                 }
1321         }
1322 }
1323
1324
1325 int wpas_wps_init(struct wpa_supplicant *wpa_s)
1326 {
1327         struct wps_context *wps;
1328         struct wps_registrar_config rcfg;
1329         struct hostapd_hw_modes *modes;
1330         u16 m;
1331
1332         wps = os_zalloc(sizeof(*wps));
1333         if (wps == NULL)
1334                 return -1;
1335
1336         wps->cred_cb = wpa_supplicant_wps_cred;
1337         wps->event_cb = wpa_supplicant_wps_event;
1338         wps->rf_band_cb = wpa_supplicant_wps_rf_band;
1339         wps->cb_ctx = wpa_s;
1340
1341         wps->dev.device_name = wpa_s->conf->device_name;
1342         wps->dev.manufacturer = wpa_s->conf->manufacturer;
1343         wps->dev.model_name = wpa_s->conf->model_name;
1344         wps->dev.model_number = wpa_s->conf->model_number;
1345         wps->dev.serial_number = wpa_s->conf->serial_number;
1346         wps->config_methods =
1347                 wps_config_methods_str2bin(wpa_s->conf->config_methods);
1348         if ((wps->config_methods & (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) ==
1349             (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
1350                 wpa_printf(MSG_ERROR, "WPS: Both Label and Display config "
1351                            "methods are not allowed at the same time");
1352                 os_free(wps);
1353                 return -1;
1354         }
1355         wps->config_methods = wps_fix_config_methods(wps->config_methods);
1356         wps->dev.config_methods = wps->config_methods;
1357         os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type,
1358                   WPS_DEV_TYPE_LEN);
1359
1360         wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
1361         os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type,
1362                   WPS_DEV_TYPE_LEN * wps->dev.num_sec_dev_types);
1363
1364         wpas_wps_set_vendor_ext_m1(wpa_s, wps);
1365
1366         wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
1367         modes = wpa_s->hw.modes;
1368         if (modes) {
1369                 for (m = 0; m < wpa_s->hw.num_modes; m++) {
1370                         if (modes[m].mode == HOSTAPD_MODE_IEEE80211B ||
1371                             modes[m].mode == HOSTAPD_MODE_IEEE80211G)
1372                                 wps->dev.rf_bands |= WPS_RF_24GHZ;
1373                         else if (modes[m].mode == HOSTAPD_MODE_IEEE80211A)
1374                                 wps->dev.rf_bands |= WPS_RF_50GHZ;
1375                 }
1376         }
1377         if (wps->dev.rf_bands == 0) {
1378                 /*
1379                  * Default to claiming support for both bands if the driver
1380                  * does not provide support for fetching supported bands.
1381                  */
1382                 wps->dev.rf_bands = WPS_RF_24GHZ | WPS_RF_50GHZ;
1383         }
1384         os_memcpy(wps->dev.mac_addr, wpa_s->own_addr, ETH_ALEN);
1385         wpas_wps_set_uuid(wpa_s, wps);
1386
1387         wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK;
1388         wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP;
1389
1390         os_memset(&rcfg, 0, sizeof(rcfg));
1391         rcfg.new_psk_cb = wpas_wps_new_psk_cb;
1392         rcfg.pin_needed_cb = wpas_wps_pin_needed_cb;
1393         rcfg.set_sel_reg_cb = wpas_wps_set_sel_reg_cb;
1394         rcfg.cb_ctx = wpa_s;
1395
1396         wps->registrar = wps_registrar_init(wps, &rcfg);
1397         if (wps->registrar == NULL) {
1398                 wpa_printf(MSG_DEBUG, "Failed to initialize WPS Registrar");
1399                 os_free(wps);
1400                 return -1;
1401         }
1402
1403         wpa_s->wps = wps;
1404
1405         return 0;
1406 }
1407
1408
1409 void wpas_wps_deinit(struct wpa_supplicant *wpa_s)
1410 {
1411         eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
1412         eloop_cancel_timeout(wpas_wps_clear_timeout, wpa_s, NULL);
1413         eloop_cancel_timeout(wpas_wps_reenable_networks_cb, wpa_s, NULL);
1414         wpas_wps_clear_ap_info(wpa_s);
1415
1416         if (wpa_s->wps == NULL)
1417                 return;
1418
1419 #ifdef CONFIG_WPS_ER
1420         wps_er_deinit(wpa_s->wps_er, NULL, NULL);
1421         wpa_s->wps_er = NULL;
1422 #endif /* CONFIG_WPS_ER */
1423
1424         wps_registrar_deinit(wpa_s->wps->registrar);
1425         wpabuf_free(wpa_s->wps->dh_pubkey);
1426         wpabuf_free(wpa_s->wps->dh_privkey);
1427         wpabuf_free(wpa_s->wps->dev.vendor_ext_m1);
1428         os_free(wpa_s->wps->network_key);
1429         os_free(wpa_s->wps);
1430         wpa_s->wps = NULL;
1431 }
1432
1433
1434 int wpas_wps_ssid_bss_match(struct wpa_supplicant *wpa_s,
1435                             struct wpa_ssid *ssid, struct wpa_bss *bss)
1436 {
1437         struct wpabuf *wps_ie;
1438
1439         if (!(ssid->key_mgmt & WPA_KEY_MGMT_WPS))
1440                 return -1;
1441
1442         wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1443         if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
1444                 if (!wps_ie) {
1445                         wpa_printf(MSG_DEBUG, "   skip - non-WPS AP");
1446                         return 0;
1447                 }
1448
1449                 if (!wps_is_selected_pbc_registrar(wps_ie)) {
1450                         wpa_printf(MSG_DEBUG, "   skip - WPS AP "
1451                                    "without active PBC Registrar");
1452                         wpabuf_free(wps_ie);
1453                         return 0;
1454                 }
1455
1456                 /* TODO: overlap detection */
1457                 wpa_printf(MSG_DEBUG, "   selected based on WPS IE "
1458                            "(Active PBC)");
1459                 wpabuf_free(wps_ie);
1460                 return 1;
1461         }
1462
1463         if (eap_is_wps_pin_enrollee(&ssid->eap)) {
1464                 if (!wps_ie) {
1465                         wpa_printf(MSG_DEBUG, "   skip - non-WPS AP");
1466                         return 0;
1467                 }
1468
1469                 /*
1470                  * Start with WPS APs that advertise our address as an
1471                  * authorized MAC (v2.0) or active PIN Registrar (v1.0) and
1472                  * allow any WPS AP after couple of scans since some APs do not
1473                  * set Selected Registrar attribute properly when using
1474                  * external Registrar.
1475                  */
1476                 if (!wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1)) {
1477                         if (wpa_s->scan_runs < WPS_PIN_SCAN_IGNORE_SEL_REG) {
1478                                 wpa_printf(MSG_DEBUG, "   skip - WPS AP "
1479                                            "without active PIN Registrar");
1480                                 wpabuf_free(wps_ie);
1481                                 return 0;
1482                         }
1483                         wpa_printf(MSG_DEBUG, "   selected based on WPS IE");
1484                 } else {
1485                         wpa_printf(MSG_DEBUG, "   selected based on WPS IE "
1486                                    "(Authorized MAC or Active PIN)");
1487                 }
1488                 wpabuf_free(wps_ie);
1489                 return 1;
1490         }
1491
1492         if (wps_ie) {
1493                 wpa_printf(MSG_DEBUG, "   selected based on WPS IE");
1494                 wpabuf_free(wps_ie);
1495                 return 1;
1496         }
1497
1498         return -1;
1499 }
1500
1501
1502 int wpas_wps_ssid_wildcard_ok(struct wpa_supplicant *wpa_s,
1503                               struct wpa_ssid *ssid,
1504                               struct wpa_bss *bss)
1505 {
1506         struct wpabuf *wps_ie = NULL;
1507         int ret = 0;
1508
1509         if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
1510                 wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1511                 if (wps_ie && wps_is_selected_pbc_registrar(wps_ie)) {
1512                         /* allow wildcard SSID for WPS PBC */
1513                         ret = 1;
1514                 }
1515         } else if (eap_is_wps_pin_enrollee(&ssid->eap)) {
1516                 wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1517                 if (wps_ie &&
1518                     (wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1) ||
1519                      wpa_s->scan_runs >= WPS_PIN_SCAN_IGNORE_SEL_REG)) {
1520                         /* allow wildcard SSID for WPS PIN */
1521                         ret = 1;
1522                 }
1523         }
1524
1525         if (!ret && ssid->bssid_set &&
1526             os_memcmp(ssid->bssid, bss->bssid, ETH_ALEN) == 0) {
1527                 /* allow wildcard SSID due to hardcoded BSSID match */
1528                 ret = 1;
1529         }
1530
1531 #ifdef CONFIG_WPS_STRICT
1532         if (wps_ie) {
1533                 if (wps_validate_beacon_probe_resp(wps_ie, bss->beacon_ie_len >
1534                                                    0, bss->bssid) < 0)
1535                         ret = 0;
1536                 if (bss->beacon_ie_len) {
1537                         struct wpabuf *bcn_wps;
1538                         bcn_wps = wpa_bss_get_vendor_ie_multi_beacon(
1539                                 bss, WPS_IE_VENDOR_TYPE);
1540                         if (bcn_wps == NULL) {
1541                                 wpa_printf(MSG_DEBUG, "WPS: Mandatory WPS IE "
1542                                            "missing from AP Beacon");
1543                                 ret = 0;
1544                         } else {
1545                                 if (wps_validate_beacon(wps_ie) < 0)
1546                                         ret = 0;
1547                                 wpabuf_free(bcn_wps);
1548                         }
1549                 }
1550         }
1551 #endif /* CONFIG_WPS_STRICT */
1552
1553         wpabuf_free(wps_ie);
1554
1555         return ret;
1556 }
1557
1558
1559 int wpas_wps_scan_pbc_overlap(struct wpa_supplicant *wpa_s,
1560                               struct wpa_bss *selected, struct wpa_ssid *ssid)
1561 {
1562         const u8 *sel_uuid, *uuid;
1563         struct wpabuf *wps_ie;
1564         int ret = 0;
1565         struct wpa_bss *bss;
1566
1567         if (!eap_is_wps_pbc_enrollee(&ssid->eap))
1568                 return 0;
1569
1570         wpa_printf(MSG_DEBUG, "WPS: Check whether PBC session overlap is "
1571                    "present in scan results; selected BSSID " MACSTR,
1572                    MAC2STR(selected->bssid));
1573
1574         /* Make sure that only one AP is in active PBC mode */
1575         wps_ie = wpa_bss_get_vendor_ie_multi(selected, WPS_IE_VENDOR_TYPE);
1576         if (wps_ie) {
1577                 sel_uuid = wps_get_uuid_e(wps_ie);
1578                 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the selected BSS",
1579                             sel_uuid, UUID_LEN);
1580         } else {
1581                 wpa_printf(MSG_DEBUG, "WPS: Selected BSS does not include "
1582                            "WPS IE?!");
1583                 sel_uuid = NULL;
1584         }
1585
1586         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1587                 struct wpabuf *ie;
1588                 if (bss == selected)
1589                         continue;
1590                 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1591                 if (!ie)
1592                         continue;
1593                 if (!wps_is_selected_pbc_registrar(ie)) {
1594                         wpabuf_free(ie);
1595                         continue;
1596                 }
1597                 wpa_printf(MSG_DEBUG, "WPS: Another BSS in active PBC mode: "
1598                            MACSTR, MAC2STR(bss->bssid));
1599                 uuid = wps_get_uuid_e(ie);
1600                 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the other BSS",
1601                             uuid, UUID_LEN);
1602                 if (sel_uuid == NULL || uuid == NULL ||
1603                     os_memcmp(sel_uuid, uuid, UUID_LEN) != 0) {
1604                         ret = 1; /* PBC overlap */
1605                         wpa_msg(wpa_s, MSG_INFO, "WPS: PBC overlap detected: "
1606                                 MACSTR " and " MACSTR,
1607                                 MAC2STR(selected->bssid),
1608                                 MAC2STR(bss->bssid));
1609                         wpabuf_free(ie);
1610                         break;
1611                 }
1612
1613                 /* TODO: verify that this is reasonable dual-band situation */
1614
1615                 wpabuf_free(ie);
1616         }
1617
1618         wpabuf_free(wps_ie);
1619
1620         return ret;
1621 }
1622
1623
1624 void wpas_wps_notify_scan_results(struct wpa_supplicant *wpa_s)
1625 {
1626         struct wpa_bss *bss;
1627         unsigned int pbc = 0, auth = 0, pin = 0, wps = 0;
1628
1629         if (wpa_s->disconnected || wpa_s->wpa_state >= WPA_ASSOCIATED)
1630                 return;
1631
1632         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1633                 struct wpabuf *ie;
1634                 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1635                 if (!ie)
1636                         continue;
1637                 if (wps_is_selected_pbc_registrar(ie))
1638                         pbc++;
1639                 else if (wps_is_addr_authorized(ie, wpa_s->own_addr, 0))
1640                         auth++;
1641                 else if (wps_is_selected_pin_registrar(ie))
1642                         pin++;
1643                 else
1644                         wps++;
1645                 wpabuf_free(ie);
1646         }
1647
1648         if (pbc)
1649                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PBC);
1650         else if (auth)
1651                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_AUTH);
1652         else if (pin)
1653                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PIN);
1654         else if (wps)
1655                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE);
1656 }
1657
1658
1659 int wpas_wps_searching(struct wpa_supplicant *wpa_s)
1660 {
1661         struct wpa_ssid *ssid;
1662
1663         for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1664                 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && !ssid->disabled)
1665                         return 1;
1666         }
1667
1668         return 0;
1669 }
1670
1671
1672 int wpas_wps_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
1673                               char *end)
1674 {
1675         struct wpabuf *wps_ie;
1676         int ret;
1677
1678         wps_ie = ieee802_11_vendor_ie_concat(ies, ies_len, WPS_DEV_OUI_WFA);
1679         if (wps_ie == NULL)
1680                 return 0;
1681
1682         ret = wps_attr_text(wps_ie, buf, end);
1683         wpabuf_free(wps_ie);
1684         return ret;
1685 }
1686
1687
1688 int wpas_wps_er_start(struct wpa_supplicant *wpa_s, const char *filter)
1689 {
1690 #ifdef CONFIG_WPS_ER
1691         if (wpa_s->wps_er) {
1692                 wps_er_refresh(wpa_s->wps_er);
1693                 return 0;
1694         }
1695         wpa_s->wps_er = wps_er_init(wpa_s->wps, wpa_s->ifname, filter);
1696         if (wpa_s->wps_er == NULL)
1697                 return -1;
1698         return 0;
1699 #else /* CONFIG_WPS_ER */
1700         return 0;
1701 #endif /* CONFIG_WPS_ER */
1702 }
1703
1704
1705 int wpas_wps_er_stop(struct wpa_supplicant *wpa_s)
1706 {
1707 #ifdef CONFIG_WPS_ER
1708         wps_er_deinit(wpa_s->wps_er, NULL, NULL);
1709         wpa_s->wps_er = NULL;
1710 #endif /* CONFIG_WPS_ER */
1711         return 0;
1712 }
1713
1714
1715 #ifdef CONFIG_WPS_ER
1716 int wpas_wps_er_add_pin(struct wpa_supplicant *wpa_s, const u8 *addr,
1717                         const char *uuid, const char *pin)
1718 {
1719         u8 u[UUID_LEN];
1720         const u8 *use_uuid = NULL;
1721         u8 addr_buf[ETH_ALEN];
1722
1723         if (os_strcmp(uuid, "any") == 0) {
1724         } else if (uuid_str2bin(uuid, u) == 0) {
1725                 use_uuid = u;
1726         } else if (hwaddr_aton(uuid, addr_buf) == 0) {
1727                 use_uuid = wps_er_get_sta_uuid(wpa_s->wps_er, addr_buf);
1728                 if (use_uuid == NULL)
1729                         return -1;
1730         } else
1731                 return -1;
1732         return wps_registrar_add_pin(wpa_s->wps->registrar, addr,
1733                                      use_uuid,
1734                                      (const u8 *) pin, os_strlen(pin), 300);
1735 }
1736
1737
1738 int wpas_wps_er_pbc(struct wpa_supplicant *wpa_s, const char *uuid)
1739 {
1740         u8 u[UUID_LEN], *use_uuid = NULL;
1741         u8 addr[ETH_ALEN], *use_addr = NULL;
1742
1743         if (uuid_str2bin(uuid, u) == 0)
1744                 use_uuid = u;
1745         else if (hwaddr_aton(uuid, addr) == 0)
1746                 use_addr = addr;
1747         else
1748                 return -1;
1749         return wps_er_pbc(wpa_s->wps_er, use_uuid, use_addr);
1750 }
1751
1752
1753 int wpas_wps_er_learn(struct wpa_supplicant *wpa_s, const char *uuid,
1754                       const char *pin)
1755 {
1756         u8 u[UUID_LEN], *use_uuid = NULL;
1757         u8 addr[ETH_ALEN], *use_addr = NULL;
1758
1759         if (uuid_str2bin(uuid, u) == 0)
1760                 use_uuid = u;
1761         else if (hwaddr_aton(uuid, addr) == 0)
1762                 use_addr = addr;
1763         else
1764                 return -1;
1765
1766         return wps_er_learn(wpa_s->wps_er, use_uuid, use_addr, (const u8 *) pin,
1767                             os_strlen(pin));
1768 }
1769
1770
1771 static int wpas_wps_network_to_cred(struct wpa_ssid *ssid,
1772                                     struct wps_credential *cred)
1773 {
1774         os_memset(cred, 0, sizeof(*cred));
1775         if (ssid->ssid_len > 32)
1776                 return -1;
1777         os_memcpy(cred->ssid, ssid->ssid, ssid->ssid_len);
1778         cred->ssid_len = ssid->ssid_len;
1779         if (ssid->key_mgmt & WPA_KEY_MGMT_PSK) {
1780                 cred->auth_type = (ssid->proto & WPA_PROTO_RSN) ?
1781                         WPS_AUTH_WPA2PSK : WPS_AUTH_WPAPSK;
1782                 if (ssid->pairwise_cipher & WPA_CIPHER_CCMP)
1783                         cred->encr_type = WPS_ENCR_AES;
1784                 else
1785                         cred->encr_type = WPS_ENCR_TKIP;
1786                 if (ssid->passphrase) {
1787                         cred->key_len = os_strlen(ssid->passphrase);
1788                         if (cred->key_len >= 64)
1789                                 return -1;
1790                         os_memcpy(cred->key, ssid->passphrase, cred->key_len);
1791                 } else if (ssid->psk_set) {
1792                         cred->key_len = 32;
1793                         os_memcpy(cred->key, ssid->psk, 32);
1794                 } else
1795                         return -1;
1796         } else {
1797                 cred->auth_type = WPS_AUTH_OPEN;
1798                 cred->encr_type = WPS_ENCR_NONE;
1799         }
1800
1801         return 0;
1802 }
1803
1804
1805 int wpas_wps_er_set_config(struct wpa_supplicant *wpa_s, const char *uuid,
1806                            int id)
1807 {
1808         u8 u[UUID_LEN], *use_uuid = NULL;
1809         u8 addr[ETH_ALEN], *use_addr = NULL;
1810         struct wpa_ssid *ssid;
1811         struct wps_credential cred;
1812
1813         if (uuid_str2bin(uuid, u) == 0)
1814                 use_uuid = u;
1815         else if (hwaddr_aton(uuid, addr) == 0)
1816                 use_addr = addr;
1817         else
1818                 return -1;
1819         ssid = wpa_config_get_network(wpa_s->conf, id);
1820         if (ssid == NULL || ssid->ssid == NULL)
1821                 return -1;
1822
1823         if (wpas_wps_network_to_cred(ssid, &cred) < 0)
1824                 return -1;
1825         return wps_er_set_config(wpa_s->wps_er, use_uuid, use_addr, &cred);
1826 }
1827
1828
1829 int wpas_wps_er_config(struct wpa_supplicant *wpa_s, const char *uuid,
1830                        const char *pin, struct wps_new_ap_settings *settings)
1831 {
1832         u8 u[UUID_LEN], *use_uuid = NULL;
1833         u8 addr[ETH_ALEN], *use_addr = NULL;
1834         struct wps_credential cred;
1835         size_t len;
1836
1837         if (uuid_str2bin(uuid, u) == 0)
1838                 use_uuid = u;
1839         else if (hwaddr_aton(uuid, addr) == 0)
1840                 use_addr = addr;
1841         else
1842                 return -1;
1843         if (settings->ssid_hex == NULL || settings->auth == NULL ||
1844             settings->encr == NULL || settings->key_hex == NULL)
1845                 return -1;
1846
1847         os_memset(&cred, 0, sizeof(cred));
1848         len = os_strlen(settings->ssid_hex);
1849         if ((len & 1) || len > 2 * sizeof(cred.ssid) ||
1850             hexstr2bin(settings->ssid_hex, cred.ssid, len / 2))
1851                 return -1;
1852         cred.ssid_len = len / 2;
1853
1854         len = os_strlen(settings->key_hex);
1855         if ((len & 1) || len > 2 * sizeof(cred.key) ||
1856             hexstr2bin(settings->key_hex, cred.key, len / 2))
1857                 return -1;
1858         cred.key_len = len / 2;
1859
1860         if (os_strcmp(settings->auth, "OPEN") == 0)
1861                 cred.auth_type = WPS_AUTH_OPEN;
1862         else if (os_strcmp(settings->auth, "WPAPSK") == 0)
1863                 cred.auth_type = WPS_AUTH_WPAPSK;
1864         else if (os_strcmp(settings->auth, "WPA2PSK") == 0)
1865                 cred.auth_type = WPS_AUTH_WPA2PSK;
1866         else
1867                 return -1;
1868
1869         if (os_strcmp(settings->encr, "NONE") == 0)
1870                 cred.encr_type = WPS_ENCR_NONE;
1871         else if (os_strcmp(settings->encr, "WEP") == 0)
1872                 cred.encr_type = WPS_ENCR_WEP;
1873         else if (os_strcmp(settings->encr, "TKIP") == 0)
1874                 cred.encr_type = WPS_ENCR_TKIP;
1875         else if (os_strcmp(settings->encr, "CCMP") == 0)
1876                 cred.encr_type = WPS_ENCR_AES;
1877         else
1878                 return -1;
1879
1880         return wps_er_config(wpa_s->wps_er, use_uuid, use_addr,
1881                              (const u8 *) pin, os_strlen(pin), &cred);
1882 }
1883
1884
1885 #ifdef CONFIG_WPS_NFC
1886 struct wpabuf * wpas_wps_er_nfc_config_token(struct wpa_supplicant *wpa_s,
1887                                              int ndef, const char *uuid)
1888 {
1889         struct wpabuf *ret;
1890         u8 u[UUID_LEN], *use_uuid = NULL;
1891         u8 addr[ETH_ALEN], *use_addr = NULL;
1892
1893         if (!wpa_s->wps_er)
1894                 return NULL;
1895
1896         if (uuid_str2bin(uuid, u) == 0)
1897                 use_uuid = u;
1898         else if (hwaddr_aton(uuid, addr) == 0)
1899                 use_addr = addr;
1900         else
1901                 return NULL;
1902
1903         ret = wps_er_nfc_config_token(wpa_s->wps_er, use_uuid, use_addr);
1904         if (ndef && ret) {
1905                 struct wpabuf *tmp;
1906                 tmp = ndef_build_wifi(ret);
1907                 wpabuf_free(ret);
1908                 if (tmp == NULL)
1909                         return NULL;
1910                 ret = tmp;
1911         }
1912
1913         return ret;
1914 }
1915 #endif /* CONFIG_WPS_NFC */
1916
1917
1918 static int callbacks_pending = 0;
1919
1920 static void wpas_wps_terminate_cb(void *ctx)
1921 {
1922         wpa_printf(MSG_DEBUG, "WPS ER: Terminated");
1923         if (--callbacks_pending <= 0)
1924                 eloop_terminate();
1925 }
1926 #endif /* CONFIG_WPS_ER */
1927
1928
1929 int wpas_wps_terminate_pending(struct wpa_supplicant *wpa_s)
1930 {
1931 #ifdef CONFIG_WPS_ER
1932         if (wpa_s->wps_er) {
1933                 callbacks_pending++;
1934                 wps_er_deinit(wpa_s->wps_er, wpas_wps_terminate_cb, wpa_s);
1935                 wpa_s->wps_er = NULL;
1936                 return 1;
1937         }
1938 #endif /* CONFIG_WPS_ER */
1939         return 0;
1940 }
1941
1942
1943 void wpas_wps_update_config(struct wpa_supplicant *wpa_s)
1944 {
1945         struct wps_context *wps = wpa_s->wps;
1946
1947         if (wps == NULL)
1948                 return;
1949
1950         if (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS) {
1951                 wps->config_methods = wps_config_methods_str2bin(
1952                         wpa_s->conf->config_methods);
1953                 if ((wps->config_methods &
1954                      (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) ==
1955                     (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
1956                         wpa_printf(MSG_ERROR, "WPS: Both Label and Display "
1957                                    "config methods are not allowed at the "
1958                                    "same time");
1959                         wps->config_methods &= ~WPS_CONFIG_LABEL;
1960                 }
1961         }
1962         wps->config_methods = wps_fix_config_methods(wps->config_methods);
1963         wps->dev.config_methods = wps->config_methods;
1964
1965         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
1966                 os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type,
1967                           WPS_DEV_TYPE_LEN);
1968
1969         if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE) {
1970                 wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
1971                 os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type,
1972                           wps->dev.num_sec_dev_types * WPS_DEV_TYPE_LEN);
1973         }
1974
1975         if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION)
1976                 wpas_wps_set_vendor_ext_m1(wpa_s, wps);
1977
1978         if (wpa_s->conf->changed_parameters & CFG_CHANGED_OS_VERSION)
1979                 wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
1980
1981         if (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID)
1982                 wpas_wps_set_uuid(wpa_s, wps);
1983
1984         if (wpa_s->conf->changed_parameters &
1985             (CFG_CHANGED_DEVICE_NAME | CFG_CHANGED_WPS_STRING)) {
1986                 /* Update pointers to make sure they refer current values */
1987                 wps->dev.device_name = wpa_s->conf->device_name;
1988                 wps->dev.manufacturer = wpa_s->conf->manufacturer;
1989                 wps->dev.model_name = wpa_s->conf->model_name;
1990                 wps->dev.model_number = wpa_s->conf->model_number;
1991                 wps->dev.serial_number = wpa_s->conf->serial_number;
1992         }
1993 }
1994
1995
1996 #ifdef CONFIG_WPS_NFC
1997
1998 #ifdef CONFIG_WPS_ER
1999 static struct wpabuf *
2000 wpas_wps_network_config_token(struct wpa_supplicant *wpa_s, int ndef,
2001                               struct wpa_ssid *ssid)
2002 {
2003         struct wpabuf *ret;
2004         struct wps_credential cred;
2005
2006         if (wpas_wps_network_to_cred(ssid, &cred) < 0)
2007                 return NULL;
2008
2009         ret = wps_er_config_token_from_cred(wpa_s->wps, &cred);
2010
2011         if (ndef && ret) {
2012                 struct wpabuf *tmp;
2013                 tmp = ndef_build_wifi(ret);
2014                 wpabuf_free(ret);
2015                 if (tmp == NULL)
2016                         return NULL;
2017                 ret = tmp;
2018         }
2019
2020         return ret;
2021 }
2022 #endif /* CONFIG_WPS_ER */
2023
2024
2025 struct wpabuf * wpas_wps_nfc_config_token(struct wpa_supplicant *wpa_s,
2026                                           int ndef, const char *id_str)
2027 {
2028 #ifdef CONFIG_WPS_ER
2029         if (id_str) {
2030                 int id;
2031                 char *end = NULL;
2032                 struct wpa_ssid *ssid;
2033
2034                 id = strtol(id_str, &end, 10);
2035                 if (end && *end)
2036                         return NULL;
2037
2038                 ssid = wpa_config_get_network(wpa_s->conf, id);
2039                 if (ssid == NULL)
2040                         return NULL;
2041                 return wpas_wps_network_config_token(wpa_s, ndef, ssid);
2042         }
2043 #endif /* CONFIG_WPS_ER */
2044 #ifdef CONFIG_AP
2045         if (wpa_s->ap_iface)
2046                 return wpas_ap_wps_nfc_config_token(wpa_s, ndef);
2047 #endif /* CONFIG_AP */
2048         return NULL;
2049 }
2050
2051
2052 struct wpabuf * wpas_wps_nfc_token(struct wpa_supplicant *wpa_s, int ndef)
2053 {
2054         if (wpa_s->conf->wps_nfc_pw_from_config) {
2055                 return wps_nfc_token_build(ndef,
2056                                            wpa_s->conf->wps_nfc_dev_pw_id,
2057                                            wpa_s->conf->wps_nfc_dh_pubkey,
2058                                            wpa_s->conf->wps_nfc_dev_pw);
2059         }
2060
2061         return wps_nfc_token_gen(ndef, &wpa_s->conf->wps_nfc_dev_pw_id,
2062                                  &wpa_s->conf->wps_nfc_dh_pubkey,
2063                                  &wpa_s->conf->wps_nfc_dh_privkey,
2064                                  &wpa_s->conf->wps_nfc_dev_pw);
2065 }
2066
2067
2068 int wpas_wps_start_nfc(struct wpa_supplicant *wpa_s, const u8 *bssid)
2069 {
2070         struct wps_context *wps = wpa_s->wps;
2071         char pw[32 * 2 + 1];
2072
2073         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL ||
2074             wpa_s->conf->wps_nfc_dh_privkey == NULL ||
2075             wpa_s->conf->wps_nfc_dev_pw == NULL)
2076                 return -1;
2077
2078         dh5_free(wps->dh_ctx);
2079         wpabuf_free(wps->dh_pubkey);
2080         wpabuf_free(wps->dh_privkey);
2081         wps->dh_privkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
2082         wps->dh_pubkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
2083         if (wps->dh_privkey == NULL || wps->dh_pubkey == NULL) {
2084                 wps->dh_ctx = NULL;
2085                 wpabuf_free(wps->dh_pubkey);
2086                 wps->dh_pubkey = NULL;
2087                 wpabuf_free(wps->dh_privkey);
2088                 wps->dh_privkey = NULL;
2089                 return -1;
2090         }
2091         wps->dh_ctx = dh5_init_fixed(wps->dh_privkey, wps->dh_pubkey);
2092         if (wps->dh_ctx == NULL) {
2093                 wpabuf_free(wps->dh_pubkey);
2094                 wps->dh_pubkey = NULL;
2095                 wpabuf_free(wps->dh_privkey);
2096                 wps->dh_privkey = NULL;
2097                 return -1;
2098         }
2099
2100         wpa_snprintf_hex_uppercase(pw, sizeof(pw),
2101                                    wpabuf_head(wpa_s->conf->wps_nfc_dev_pw),
2102                                    wpabuf_len(wpa_s->conf->wps_nfc_dev_pw));
2103         return wpas_wps_start_pin(wpa_s, bssid, pw, 0,
2104                                   wpa_s->conf->wps_nfc_dev_pw_id);
2105 }
2106
2107
2108 static int wpas_wps_use_cred(struct wpa_supplicant *wpa_s,
2109                              struct wps_parse_attr *attr)
2110 {
2111         wpa_s->wps_ap_channel = 0;
2112
2113         /*
2114          * Disable existing networks temporarily to allow the newly learned
2115          * credential to be preferred. Enable the temporarily disabled networks
2116          * after 10 seconds.
2117          */
2118         wpas_wps_temp_disable(wpa_s, NULL);
2119         eloop_register_timeout(10, 0, wpas_wps_reenable_networks_cb, wpa_s,
2120                                NULL);
2121
2122         if (wps_oob_use_cred(wpa_s->wps, attr) < 0)
2123                 return -1;
2124
2125         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
2126                 return 0;
2127
2128         wpa_printf(MSG_DEBUG, "WPS: Request reconnection with new network "
2129                    "based on the received credential added");
2130         wpa_s->normal_scans = 0;
2131         wpa_supplicant_reinit_autoscan(wpa_s);
2132         if (wpa_s->wps_ap_channel) {
2133                 u16 chan = wpa_s->wps_ap_channel;
2134                 int freq = 0;
2135
2136                 if (chan >= 1 && chan <= 13)
2137                         freq = 2407 + 5 * chan;
2138                 else if (chan == 14)
2139                         freq = 2484;
2140                 else if (chan >= 30)
2141                         freq = 5000 + 5 * chan;
2142
2143                 if (freq) {
2144                         wpa_printf(MSG_DEBUG, "WPS: Credential indicated "
2145                                    "AP channel %u -> %u MHz", chan, freq);
2146                         wpa_s->after_wps = 5;
2147                         wpa_s->wps_freq = freq;
2148                 }
2149         }
2150         wpa_s->disconnected = 0;
2151         wpa_s->reassociate = 1;
2152
2153         wpa_supplicant_cancel_sched_scan(wpa_s);
2154         wpa_supplicant_req_scan(wpa_s, 0, 0);
2155
2156         return 0;
2157 }
2158
2159
2160 #ifdef CONFIG_WPS_ER
2161 static int wpas_wps_add_nfc_password_token(struct wpa_supplicant *wpa_s,
2162                                            struct wps_parse_attr *attr)
2163 {
2164         return wps_registrar_add_nfc_password_token(
2165                 wpa_s->wps->registrar, attr->oob_dev_password,
2166                 attr->oob_dev_password_len);
2167 }
2168 #endif /* CONFIG_WPS_ER */
2169
2170
2171 static int wpas_wps_nfc_tag_process(struct wpa_supplicant *wpa_s,
2172                                     const struct wpabuf *wps)
2173 {
2174         struct wps_parse_attr attr;
2175
2176         wpa_hexdump_buf(MSG_DEBUG, "WPS: Received NFC tag payload", wps);
2177
2178         if (wps_parse_msg(wps, &attr)) {
2179                 wpa_printf(MSG_DEBUG, "WPS: Ignore invalid data from NFC tag");
2180                 return -1;
2181         }
2182
2183         if (attr.num_cred)
2184                 return wpas_wps_use_cred(wpa_s, &attr);
2185
2186 #ifdef CONFIG_WPS_ER
2187         if (attr.oob_dev_password)
2188                 return wpas_wps_add_nfc_password_token(wpa_s, &attr);
2189 #endif /* CONFIG_WPS_ER */
2190
2191         wpa_printf(MSG_DEBUG, "WPS: Ignore unrecognized NFC tag");
2192         return -1;
2193 }
2194
2195
2196 int wpas_wps_nfc_tag_read(struct wpa_supplicant *wpa_s,
2197                           const struct wpabuf *data)
2198 {
2199         const struct wpabuf *wps = data;
2200         struct wpabuf *tmp = NULL;
2201         int ret;
2202
2203         if (wpabuf_len(data) < 4)
2204                 return -1;
2205
2206         if (*wpabuf_head_u8(data) != 0x10) {
2207                 /* Assume this contains full NDEF record */
2208                 tmp = ndef_parse_wifi(data);
2209                 if (tmp == NULL) {
2210                         wpa_printf(MSG_DEBUG, "WPS: Could not parse NDEF");
2211                         return -1;
2212                 }
2213                 wps = tmp;
2214         }
2215
2216         ret = wpas_wps_nfc_tag_process(wpa_s, wps);
2217         wpabuf_free(tmp);
2218         return ret;
2219 }
2220
2221
2222 struct wpabuf * wpas_wps_nfc_handover_req(struct wpa_supplicant *wpa_s, int cr)
2223 {
2224         if (cr)
2225                 return ndef_build_wifi_hc(1);
2226         return ndef_build_wifi_hr();
2227 }
2228
2229
2230 #ifdef CONFIG_WPS_NFC
2231 static struct wpabuf *
2232 wpas_wps_er_nfc_handover_sel(struct wpa_supplicant *wpa_s, int ndef,
2233                              const char *uuid)
2234 {
2235 #ifdef CONFIG_WPS_ER
2236         struct wpabuf *ret;
2237         u8 u[UUID_LEN], *use_uuid = NULL;
2238         u8 addr[ETH_ALEN], *use_addr = NULL;
2239
2240         if (!wpa_s->wps_er)
2241                 return NULL;
2242
2243         if (uuid == NULL)
2244                 return NULL;
2245         if (uuid_str2bin(uuid, u) == 0)
2246                 use_uuid = u;
2247         else if (hwaddr_aton(uuid, addr) == 0)
2248                 use_addr = addr;
2249         else
2250                 return NULL;
2251
2252         /*
2253          * Handover Select carrier record for WPS uses the same format as
2254          * configuration token.
2255          */
2256         ret = wps_er_nfc_config_token(wpa_s->wps_er, use_uuid, use_addr);
2257         if (ndef && ret) {
2258                 struct wpabuf *tmp;
2259                 tmp = ndef_build_wifi(ret);
2260                 wpabuf_free(ret);
2261                 if (tmp == NULL)
2262                         return NULL;
2263                 ret = tmp;
2264         }
2265
2266         return ret;
2267 #else /* CONFIG_WPS_ER */
2268         return NULL;
2269 #endif /* CONFIG_WPS_ER */
2270 }
2271 #endif /* CONFIG_WPS_NFC */
2272
2273
2274 struct wpabuf * wpas_wps_nfc_handover_sel(struct wpa_supplicant *wpa_s,
2275                                           int ndef, int cr, const char *uuid)
2276 {
2277         struct wpabuf *ret;
2278         if (!cr)
2279                 return NULL;
2280         ret = wpas_ap_wps_nfc_handover_sel(wpa_s, ndef);
2281         if (ret)
2282                 return ret;
2283         return wpas_wps_er_nfc_handover_sel(wpa_s, ndef, uuid);
2284 }
2285
2286
2287 int wpas_wps_nfc_rx_handover_req(struct wpa_supplicant *wpa_s,
2288                                  const struct wpabuf *data)
2289 {
2290         /* TODO */
2291         return -1;
2292 }
2293
2294
2295 int wpas_wps_nfc_rx_handover_sel(struct wpa_supplicant *wpa_s,
2296                                  const struct wpabuf *data)
2297 {
2298         struct wpabuf *wps;
2299         int ret;
2300
2301         wps = ndef_parse_wifi(data);
2302         if (wps == NULL)
2303                 return -1;
2304         wpa_printf(MSG_DEBUG, "WPS: Received application/vnd.wfa.wsc "
2305                    "payload from NFC connection handover");
2306         wpa_hexdump_buf_key(MSG_DEBUG, "WPS: NFC payload", wps);
2307         ret = wpas_wps_nfc_tag_process(wpa_s, wps);
2308         wpabuf_free(wps);
2309
2310         return ret;
2311 }
2312
2313
2314 int wpas_wps_nfc_report_handover(struct wpa_supplicant *wpa_s,
2315                                  const struct wpabuf *req,
2316                                  const struct wpabuf *sel)
2317 {
2318         wpa_printf(MSG_DEBUG, "NFC: WPS connection handover reported");
2319         wpa_hexdump_buf_key(MSG_DEBUG, "WPS: Carrier record in request", req);
2320         wpa_hexdump_buf_key(MSG_DEBUG, "WPS: Carrier record in select", sel);
2321         return wpas_wps_nfc_rx_handover_sel(wpa_s, sel);
2322 }
2323
2324 #endif /* CONFIG_WPS_NFC */
2325
2326
2327 static void wpas_wps_dump_ap_info(struct wpa_supplicant *wpa_s)
2328 {
2329         size_t i;
2330         struct os_reltime now;
2331
2332         if (wpa_debug_level > MSG_DEBUG)
2333                 return;
2334
2335         if (wpa_s->wps_ap == NULL)
2336                 return;
2337
2338         os_get_reltime(&now);
2339
2340         for (i = 0; i < wpa_s->num_wps_ap; i++) {
2341                 struct wps_ap_info *ap = &wpa_s->wps_ap[i];
2342                 struct wpa_blacklist *e = wpa_blacklist_get(wpa_s, ap->bssid);
2343
2344                 wpa_printf(MSG_DEBUG, "WPS: AP[%d] " MACSTR " type=%d "
2345                            "tries=%d last_attempt=%d sec ago blacklist=%d",
2346                            (int) i, MAC2STR(ap->bssid), ap->type, ap->tries,
2347                            ap->last_attempt.sec > 0 ?
2348                            (int) now.sec - (int) ap->last_attempt.sec : -1,
2349                            e ? e->count : 0);
2350         }
2351 }
2352
2353
2354 static struct wps_ap_info * wpas_wps_get_ap_info(struct wpa_supplicant *wpa_s,
2355                                                  const u8 *bssid)
2356 {
2357         size_t i;
2358
2359         if (wpa_s->wps_ap == NULL)
2360                 return NULL;
2361
2362         for (i = 0; i < wpa_s->num_wps_ap; i++) {
2363                 struct wps_ap_info *ap = &wpa_s->wps_ap[i];
2364                 if (os_memcmp(ap->bssid, bssid, ETH_ALEN) == 0)
2365                         return ap;
2366         }
2367
2368         return NULL;
2369 }
2370
2371
2372 static void wpas_wps_update_ap_info_bss(struct wpa_supplicant *wpa_s,
2373                                         struct wpa_scan_res *res)
2374 {
2375         struct wpabuf *wps;
2376         enum wps_ap_info_type type;
2377         struct wps_ap_info *ap;
2378         int r;
2379
2380         if (wpa_scan_get_vendor_ie(res, WPS_IE_VENDOR_TYPE) == NULL)
2381                 return;
2382
2383         wps = wpa_scan_get_vendor_ie_multi(res, WPS_IE_VENDOR_TYPE);
2384         if (wps == NULL)
2385                 return;
2386
2387         r = wps_is_addr_authorized(wps, wpa_s->own_addr, 1);
2388         if (r == 2)
2389                 type = WPS_AP_SEL_REG_OUR;
2390         else if (r == 1)
2391                 type = WPS_AP_SEL_REG;
2392         else
2393                 type = WPS_AP_NOT_SEL_REG;
2394
2395         wpabuf_free(wps);
2396
2397         ap = wpas_wps_get_ap_info(wpa_s, res->bssid);
2398         if (ap) {
2399                 if (ap->type != type) {
2400                         wpa_printf(MSG_DEBUG, "WPS: AP " MACSTR
2401                                    " changed type %d -> %d",
2402                                    MAC2STR(res->bssid), ap->type, type);
2403                         ap->type = type;
2404                         if (type != WPS_AP_NOT_SEL_REG)
2405                                 wpa_blacklist_del(wpa_s, ap->bssid);
2406                 }
2407                 return;
2408         }
2409
2410         ap = os_realloc_array(wpa_s->wps_ap, wpa_s->num_wps_ap + 1,
2411                               sizeof(struct wps_ap_info));
2412         if (ap == NULL)
2413                 return;
2414
2415         wpa_s->wps_ap = ap;
2416         ap = &wpa_s->wps_ap[wpa_s->num_wps_ap];
2417         wpa_s->num_wps_ap++;
2418
2419         os_memset(ap, 0, sizeof(*ap));
2420         os_memcpy(ap->bssid, res->bssid, ETH_ALEN);
2421         ap->type = type;
2422         wpa_printf(MSG_DEBUG, "WPS: AP " MACSTR " type %d added",
2423                    MAC2STR(ap->bssid), ap->type);
2424 }
2425
2426
2427 void wpas_wps_update_ap_info(struct wpa_supplicant *wpa_s,
2428                              struct wpa_scan_results *scan_res)
2429 {
2430         size_t i;
2431
2432         for (i = 0; i < scan_res->num; i++)
2433                 wpas_wps_update_ap_info_bss(wpa_s, scan_res->res[i]);
2434
2435         wpas_wps_dump_ap_info(wpa_s);
2436 }
2437
2438
2439 void wpas_wps_notify_assoc(struct wpa_supplicant *wpa_s, const u8 *bssid)
2440 {
2441         struct wps_ap_info *ap;
2442
2443         wpa_s->after_wps = 0;
2444
2445         if (!wpa_s->wps_ap_iter)
2446                 return;
2447         ap = wpas_wps_get_ap_info(wpa_s, bssid);
2448         if (ap == NULL)
2449                 return;
2450         ap->tries++;
2451         os_get_reltime(&ap->last_attempt);
2452 }