wpa_supplicant/wps_supplicant.c

   1 /*
   2  * wpa_supplicant / WPS integration
   3  * Copyright (c) 2008-2013, Jouni Malinen <j@w1.fi>
   4  *
   5  * This software may be distributed under the terms of the BSD license.
   6  * See README for more details.
   7  */
   8
   9 #include "includes.h"
  10
  11 #include "common.h"
  12 #include "eloop.h"
  13 #include "uuid.h"
  14 #include "crypto/random.h"
  15 #include "crypto/dh_group5.h"
  16 #include "common/ieee802_11_defs.h"
  17 #include "common/ieee802_11_common.h"
  18 #include "common/wpa_common.h"
  19 #include "common/wpa_ctrl.h"
  20 #include "eap_common/eap_wsc_common.h"
  21 #include "eap_peer/eap.h"
  22 #include "eapol_supp/eapol_supp_sm.h"
  23 #include "rsn_supp/wpa.h"
  24 #include "wps/wps_attr_parse.h"
  25 #include "config.h"
  26 #include "wpa_supplicant_i.h"
  27 #include "driver_i.h"
  28 #include "notify.h"
  29 #include "blacklist.h"
  30 #include "bss.h"
  31 #include "scan.h"
  32 #include "ap.h"
  33 #include "p2p/p2p.h"
  34 #include "p2p_supplicant.h"
  35 #include "wps_supplicant.h"
  36
  37
  38 #ifndef WPS_PIN_SCAN_IGNORE_SEL_REG
  39 #define WPS_PIN_SCAN_IGNORE_SEL_REG 3
  40 #endif /* WPS_PIN_SCAN_IGNORE_SEL_REG */
  41
  42 static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx);
  43 static void wpas_clear_wps(struct wpa_supplicant *wpa_s);
  44
  45
  46 static void wpas_wps_clear_ap_info(struct wpa_supplicant *wpa_s)
  47 {
  48         os_free(wpa_s->wps_ap);
  49         wpa_s->wps_ap = NULL;
  50         wpa_s->num_wps_ap = 0;
  51         wpa_s->wps_ap_iter = 0;
  52 }
  53
  54
  55 int wpas_wps_eapol_cb(struct wpa_supplicant *wpa_s)
  56 {
  57         if (!wpa_s->wps_success &&
  58             wpa_s->current_ssid &&
  59             eap_is_wps_pin_enrollee(&wpa_s->current_ssid->eap)) {
  60                 const u8 *bssid = wpa_s->bssid;
  61                 if (is_zero_ether_addr(bssid))
  62                         bssid = wpa_s->pending_bssid;
  63
  64                 wpa_printf(MSG_DEBUG, "WPS: PIN registration with " MACSTR
  65                            " did not succeed - continue trying to find "
  66                            "suitable AP", MAC2STR(bssid));
  67                 wpa_blacklist_add(wpa_s, bssid);
  68
  69                 wpa_supplicant_deauthenticate(wpa_s,
  70                                               WLAN_REASON_DEAUTH_LEAVING);
  71                 wpa_s->reassociate = 1;
  72                 wpa_supplicant_req_scan(wpa_s,
  73                                         wpa_s->blacklist_cleared ? 5 : 0, 0);
  74                 wpa_s->blacklist_cleared = 0;
  75                 return 1;
  76         }
  77
  78         wpas_wps_clear_ap_info(wpa_s);
  79         eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
  80         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && !wpa_s->wps_success)
  81                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_FAIL);
  82
  83         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && wpa_s->current_ssid &&
  84             !(wpa_s->current_ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
  85                 int disabled = wpa_s->current_ssid->disabled;
  86                 unsigned int freq = wpa_s->assoc_freq;
  87                 struct wpa_bss *bss;
  88                 struct wpa_ssid *ssid = NULL;
  89                 int use_fast_assoc = 0;
  90
  91                 wpa_printf(MSG_DEBUG, "WPS: Network configuration replaced - "
  92                            "try to associate with the received credential "
  93                            "(freq=%u)", freq);
  94                 wpa_supplicant_deauthenticate(wpa_s,
  95                                               WLAN_REASON_DEAUTH_LEAVING);
  96                 if (disabled) {
  97                         wpa_printf(MSG_DEBUG, "WPS: Current network is "
  98                                    "disabled - wait for user to enable");
  99                         return 1;
 100                 }
 101                 wpa_s->after_wps = 5;
 102                 wpa_s->wps_freq = freq;
 103                 wpa_s->normal_scans = 0;
 104                 wpa_s->reassociate = 1;
 105
 106                 wpa_printf(MSG_DEBUG, "WPS: Checking whether fast association "
 107                            "without a new scan can be used");
 108                 bss = wpa_supplicant_pick_network(wpa_s, &ssid);
 109                 if (bss) {
 110                         struct wpabuf *wps;
 111                         struct wps_parse_attr attr;
 112
 113                         wps = wpa_bss_get_vendor_ie_multi(bss,
 114                                                           WPS_IE_VENDOR_TYPE);
 115                         if (wps && wps_parse_msg(wps, &attr) == 0 &&
 116                             attr.wps_state &&
 117                             *attr.wps_state == WPS_STATE_CONFIGURED)
 118                                 use_fast_assoc = 1;
 119                         wpabuf_free(wps);
 120                 }
 121
 122                 if (!use_fast_assoc ||
 123                     wpa_supplicant_fast_associate(wpa_s) != 1)
 124                         wpa_supplicant_req_scan(wpa_s, 0, 0);
 125                 return 1;
 126         }
 127
 128         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && wpa_s->current_ssid) {
 129                 wpa_printf(MSG_DEBUG, "WPS: Registration completed - waiting "
 130                            "for external credential processing");
 131                 wpas_clear_wps(wpa_s);
 132                 wpa_supplicant_deauthenticate(wpa_s,
 133                                               WLAN_REASON_DEAUTH_LEAVING);
 134                 return 1;
 135         }
 136
 137         return 0;
 138 }
 139
 140
 141 static void wpas_wps_security_workaround(struct wpa_supplicant *wpa_s,
 142                                          struct wpa_ssid *ssid,
 143                                          const struct wps_credential *cred)
 144 {
 145         struct wpa_driver_capa capa;
 146         struct wpa_bss *bss;
 147         const u8 *ie;
 148         struct wpa_ie_data adv;
 149         int wpa2 = 0, ccmp = 0;
 150
 151         /*
 152          * Many existing WPS APs do not know how to negotiate WPA2 or CCMP in
 153          * case they are configured for mixed mode operation (WPA+WPA2 and
 154          * TKIP+CCMP). Try to use scan results to figure out whether the AP
 155          * actually supports stronger security and select that if the client
 156          * has support for it, too.
 157          */
 158
 159         if (wpa_drv_get_capa(wpa_s, &capa))
 160                 return; /* Unknown what driver supports */
 161
 162         if (ssid->ssid == NULL)
 163                 return;
 164         bss = wpa_bss_get(wpa_s, cred->mac_addr, ssid->ssid, ssid->ssid_len);
 165         if (bss == NULL) {
 166                 wpa_printf(MSG_DEBUG, "WPS: The AP was not found from BSS "
 167                            "table - use credential as-is");
 168                 return;
 169         }
 170
 171         wpa_printf(MSG_DEBUG, "WPS: AP found from BSS table");
 172
 173         ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
 174         if (ie && wpa_parse_wpa_ie(ie, 2 + ie[1], &adv) == 0) {
 175                 wpa2 = 1;
 176                 if (adv.pairwise_cipher & WPA_CIPHER_CCMP)
 177                         ccmp = 1;
 178         } else {
 179                 ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 180                 if (ie && wpa_parse_wpa_ie(ie, 2 + ie[1], &adv) == 0 &&
 181                     adv.pairwise_cipher & WPA_CIPHER_CCMP)
 182                         ccmp = 1;
 183         }
 184
 185         if (ie == NULL && (ssid->proto & WPA_PROTO_WPA) &&
 186             (ssid->pairwise_cipher & WPA_CIPHER_TKIP)) {
 187                 /*
 188                  * TODO: This could be the initial AP configuration and the
 189                  * Beacon contents could change shortly. Should request a new
 190                  * scan and delay addition of the network until the updated
 191                  * scan results are available.
 192                  */
 193                 wpa_printf(MSG_DEBUG, "WPS: The AP did not yet advertise WPA "
 194                            "support - use credential as-is");
 195                 return;
 196         }
 197
 198         if (ccmp && !(ssid->pairwise_cipher & WPA_CIPHER_CCMP) &&
 199             (ssid->pairwise_cipher & WPA_CIPHER_TKIP) &&
 200             (capa.key_mgmt & WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK)) {
 201                 wpa_printf(MSG_DEBUG, "WPS: Add CCMP into the credential "
 202                            "based on scan results");
 203                 if (wpa_s->conf->ap_scan == 1)
 204                         ssid->pairwise_cipher |= WPA_CIPHER_CCMP;
 205                 else
 206                         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
 207         }
 208
 209         if (wpa2 && !(ssid->proto & WPA_PROTO_RSN) &&
 210             (ssid->proto & WPA_PROTO_WPA) &&
 211             (capa.enc & WPA_DRIVER_CAPA_ENC_CCMP)) {
 212                 wpa_printf(MSG_DEBUG, "WPS: Add WPA2 into the credential "
 213                            "based on scan results");
 214                 if (wpa_s->conf->ap_scan == 1)
 215                         ssid->proto |= WPA_PROTO_RSN;
 216                 else
 217                         ssid->proto = WPA_PROTO_RSN;
 218         }
 219 }
 220
 221
 222 static void wpas_wps_remove_dup_network(struct wpa_supplicant *wpa_s,
 223                                         struct wpa_ssid *new_ssid)
 224 {
 225         struct wpa_ssid *ssid, *next;
 226
 227         for (ssid = wpa_s->conf->ssid, next = ssid ? ssid->next : NULL; ssid;
 228              ssid = next, next = ssid ? ssid->next : NULL) {
 229                 /*
 230                  * new_ssid has already been added to the list in
 231                  * wpas_wps_add_network(), so skip it.
 232                  */
 233                 if (ssid == new_ssid)
 234                         continue;
 235
 236                 if (ssid->bssid_set || new_ssid->bssid_set) {
 237                         if (ssid->bssid_set != new_ssid->bssid_set)
 238                                 continue;
 239                         if (os_memcmp(ssid->bssid, new_ssid->bssid, ETH_ALEN) !=
 240                             0)
 241                                 continue;
 242                 }
 243
 244                 /* compare SSID */
 245                 if (ssid->ssid_len == 0 || ssid->ssid_len != new_ssid->ssid_len)
 246                         continue;
 247
 248                 if (ssid->ssid && new_ssid->ssid) {
 249                         if (os_memcmp(ssid->ssid, new_ssid->ssid,
 250                                       ssid->ssid_len) != 0)
 251                                 continue;
 252                 } else if (ssid->ssid || new_ssid->ssid)
 253                         continue;
 254
 255                 /* compare security parameters */
 256                 if (ssid->auth_alg != new_ssid->auth_alg ||
 257                     ssid->key_mgmt != new_ssid->key_mgmt ||
 258                     ssid->proto != new_ssid->proto ||
 259                     ssid->pairwise_cipher != new_ssid->pairwise_cipher ||
 260                     ssid->group_cipher != new_ssid->group_cipher)
 261                         continue;
 262
 263                 if (ssid->passphrase && new_ssid->passphrase) {
 264                         if (os_strlen(ssid->passphrase) !=
 265                             os_strlen(new_ssid->passphrase))
 266                                 continue;
 267                         if (os_strcmp(ssid->passphrase, new_ssid->passphrase) !=
 268                             0)
 269                                 continue;
 270                 } else if (ssid->passphrase || new_ssid->passphrase)
 271                         continue;
 272
 273                 if ((ssid->psk_set || new_ssid->psk_set) &&
 274                     os_memcmp(ssid->psk, new_ssid->psk, sizeof(ssid->psk)) != 0)
 275                         continue;
 276
 277                 if (ssid->auth_alg == WPA_ALG_WEP) {
 278                         if (ssid->wep_tx_keyidx != new_ssid->wep_tx_keyidx)
 279                                 continue;
 280                         if (os_memcmp(ssid->wep_key, new_ssid->wep_key,
 281                                       sizeof(ssid->wep_key)))
 282                                 continue;
 283                         if (os_memcmp(ssid->wep_key_len, new_ssid->wep_key_len,
 284                                       sizeof(ssid->wep_key_len)))
 285                                 continue;
 286                 }
 287
 288                 /* Remove the duplicated older network entry. */
 289                 wpa_printf(MSG_DEBUG, "Remove duplicate network %d", ssid->id);
 290                 wpas_notify_network_removed(wpa_s, ssid);
 291                 wpa_config_remove_network(wpa_s->conf, ssid->id);
 292         }
 293 }
 294
 295
 296 static int wpa_supplicant_wps_cred(void *ctx,
 297                                    const struct wps_credential *cred)
 298 {
 299         struct wpa_supplicant *wpa_s = ctx;
 300         struct wpa_ssid *ssid = wpa_s->current_ssid;
 301         u8 key_idx = 0;
 302         u16 auth_type;
 303 #ifdef CONFIG_WPS_REG_DISABLE_OPEN
 304         int registrar = 0;
 305 #endif /* CONFIG_WPS_REG_DISABLE_OPEN */
 306
 307         if ((wpa_s->conf->wps_cred_processing == 1 ||
 308              wpa_s->conf->wps_cred_processing == 2) && cred->cred_attr) {
 309                 size_t blen = cred->cred_attr_len * 2 + 1;
 310                 char *buf = os_malloc(blen);
 311                 if (buf) {
 312                         wpa_snprintf_hex(buf, blen,
 313                                          cred->cred_attr, cred->cred_attr_len);
 314                         wpa_msg(wpa_s, MSG_INFO, "%s%s",
 315                                 WPS_EVENT_CRED_RECEIVED, buf);
 316                         os_free(buf);
 317                 }
 318
 319                 wpas_notify_wps_credential(wpa_s, cred);
 320         } else
 321                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_CRED_RECEIVED);
 322
 323         wpa_hexdump_key(MSG_DEBUG, "WPS: Received Credential attribute",
 324                         cred->cred_attr, cred->cred_attr_len);
 325
 326         if (wpa_s->conf->wps_cred_processing == 1)
 327                 return 0;
 328
 329         wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID", cred->ssid, cred->ssid_len);
 330         wpa_printf(MSG_DEBUG, "WPS: Authentication Type 0x%x",
 331                    cred->auth_type);
 332         wpa_printf(MSG_DEBUG, "WPS: Encryption Type 0x%x", cred->encr_type);
 333         wpa_printf(MSG_DEBUG, "WPS: Network Key Index %d", cred->key_idx);
 334         wpa_hexdump_key(MSG_DEBUG, "WPS: Network Key",
 335                         cred->key, cred->key_len);
 336         wpa_printf(MSG_DEBUG, "WPS: MAC Address " MACSTR,
 337                    MAC2STR(cred->mac_addr));
 338
 339         auth_type = cred->auth_type;
 340         if (auth_type == (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) {
 341                 wpa_printf(MSG_DEBUG, "WPS: Workaround - convert mixed-mode "
 342                            "auth_type into WPA2PSK");
 343                 auth_type = WPS_AUTH_WPA2PSK;
 344         }
 345
 346         if (auth_type != WPS_AUTH_OPEN &&
 347             auth_type != WPS_AUTH_SHARED &&
 348             auth_type != WPS_AUTH_WPAPSK &&
 349             auth_type != WPS_AUTH_WPA2PSK) {
 350                 wpa_printf(MSG_DEBUG, "WPS: Ignored credentials for "
 351                            "unsupported authentication type 0x%x",
 352                            auth_type);
 353                 return 0;
 354         }
 355
 356         if (auth_type == WPS_AUTH_WPAPSK || auth_type == WPS_AUTH_WPA2PSK) {
 357                 if (cred->key_len < 8 || cred->key_len > 2 * PMK_LEN) {
 358                         wpa_printf(MSG_ERROR, "WPS: Reject PSK credential with "
 359                                    "invalid Network Key length %lu",
 360                                    (unsigned long) cred->key_len);
 361                         return -1;
 362                 }
 363         }
 364
 365         if (ssid && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
 366                 wpa_printf(MSG_DEBUG, "WPS: Replace WPS network block based "
 367                            "on the received credential");
 368 #ifdef CONFIG_WPS_REG_DISABLE_OPEN
 369                 if (ssid->eap.identity &&
 370                     ssid->eap.identity_len == WSC_ID_REGISTRAR_LEN &&
 371                     os_memcmp(ssid->eap.identity, WSC_ID_REGISTRAR,
 372                               WSC_ID_REGISTRAR_LEN) == 0)
 373                         registrar = 1;
 374 #endif /* CONFIG_WPS_REG_DISABLE_OPEN */
 375                 os_free(ssid->eap.identity);
 376                 ssid->eap.identity = NULL;
 377                 ssid->eap.identity_len = 0;
 378                 os_free(ssid->eap.phase1);
 379                 ssid->eap.phase1 = NULL;
 380                 os_free(ssid->eap.eap_methods);
 381                 ssid->eap.eap_methods = NULL;
 382                 if (!ssid->p2p_group) {
 383                         ssid->temporary = 0;
 384                         ssid->bssid_set = 0;
 385                 }
 386                 ssid->disabled_until.sec = 0;
 387                 ssid->disabled_until.usec = 0;
 388                 ssid->auth_failures = 0;
 389         } else {
 390                 wpa_printf(MSG_DEBUG, "WPS: Create a new network based on the "
 391                            "received credential");
 392                 ssid = wpa_config_add_network(wpa_s->conf);
 393                 if (ssid == NULL)
 394                         return -1;
 395                 wpas_notify_network_added(wpa_s, ssid);
 396         }
 397
 398         wpa_config_set_network_defaults(ssid);
 399
 400         os_free(ssid->ssid);
 401         ssid->ssid = os_malloc(cred->ssid_len);
 402         if (ssid->ssid) {
 403                 os_memcpy(ssid->ssid, cred->ssid, cred->ssid_len);
 404                 ssid->ssid_len = cred->ssid_len;
 405         }
 406
 407         switch (cred->encr_type) {
 408         case WPS_ENCR_NONE:
 409                 break;
 410         case WPS_ENCR_WEP:
 411                 if (cred->key_len <= 0)
 412                         break;
 413                 if (cred->key_len != 5 && cred->key_len != 13 &&
 414                     cred->key_len != 10 && cred->key_len != 26) {
 415                         wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key length "
 416                                    "%lu", (unsigned long) cred->key_len);
 417                         return -1;
 418                 }
 419                 if (cred->key_idx > NUM_WEP_KEYS) {
 420                         wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key index %d",
 421                                    cred->key_idx);
 422                         return -1;
 423                 }
 424                 if (cred->key_idx)
 425                         key_idx = cred->key_idx - 1;
 426                 if (cred->key_len == 10 || cred->key_len == 26) {
 427                         if (hexstr2bin((char *) cred->key,
 428                                        ssid->wep_key[key_idx],
 429                                        cred->key_len / 2) < 0) {
 430                                 wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key "
 431                                            "%d", key_idx);
 432                                 return -1;
 433                         }
 434                         ssid->wep_key_len[key_idx] = cred->key_len / 2;
 435                 } else {
 436                         os_memcpy(ssid->wep_key[key_idx], cred->key,
 437                                   cred->key_len);
 438                         ssid->wep_key_len[key_idx] = cred->key_len;
 439                 }
 440                 ssid->wep_tx_keyidx = key_idx;
 441                 break;
 442         case WPS_ENCR_TKIP:
 443                 ssid->pairwise_cipher = WPA_CIPHER_TKIP;
 444                 break;
 445         case WPS_ENCR_AES:
 446                 ssid->pairwise_cipher = WPA_CIPHER_CCMP;
 447                 break;
 448         }
 449
 450         switch (auth_type) {
 451         case WPS_AUTH_OPEN:
 452                 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 453                 ssid->key_mgmt = WPA_KEY_MGMT_NONE;
 454                 ssid->proto = 0;
 455 #ifdef CONFIG_WPS_REG_DISABLE_OPEN
 456                 if (registrar) {
 457                         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OPEN_NETWORK
 458                                 "id=%d - Credentials for an open "
 459                                 "network disabled by default - use "
 460                                 "'select_network %d' to enable",
 461                                 ssid->id, ssid->id);
 462                         ssid->disabled = 1;
 463                 }
 464 #endif /* CONFIG_WPS_REG_DISABLE_OPEN */
 465                 break;
 466         case WPS_AUTH_SHARED:
 467                 ssid->auth_alg = WPA_AUTH_ALG_SHARED;
 468                 ssid->key_mgmt = WPA_KEY_MGMT_NONE;
 469                 ssid->proto = 0;
 470                 break;
 471         case WPS_AUTH_WPAPSK:
 472                 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 473                 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
 474                 ssid->proto = WPA_PROTO_WPA;
 475                 break;
 476         case WPS_AUTH_WPA2PSK:
 477                 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 478                 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
 479                 ssid->proto = WPA_PROTO_RSN;
 480                 break;
 481         }
 482
 483         if (ssid->key_mgmt == WPA_KEY_MGMT_PSK) {
 484                 if (cred->key_len == 2 * PMK_LEN) {
 485                         if (hexstr2bin((const char *) cred->key, ssid->psk,
 486                                        PMK_LEN)) {
 487                                 wpa_printf(MSG_ERROR, "WPS: Invalid Network "
 488                                            "Key");
 489                                 return -1;
 490                         }
 491                         ssid->psk_set = 1;
 492                         ssid->export_keys = 1;
 493                 } else if (cred->key_len >= 8 && cred->key_len < 2 * PMK_LEN) {
 494                         os_free(ssid->passphrase);
 495                         ssid->passphrase = os_malloc(cred->key_len + 1);
 496                         if (ssid->passphrase == NULL)
 497                                 return -1;
 498                         os_memcpy(ssid->passphrase, cred->key, cred->key_len);
 499                         ssid->passphrase[cred->key_len] = '\0';
 500                         wpa_config_update_psk(ssid);
 501                         ssid->export_keys = 1;
 502                 } else {
 503                         wpa_printf(MSG_ERROR, "WPS: Invalid Network Key "
 504                                    "length %lu",
 505                                    (unsigned long) cred->key_len);
 506                         return -1;
 507                 }
 508         }
 509
 510         wpas_wps_security_workaround(wpa_s, ssid, cred);
 511
 512         if (cred->ap_channel)
 513                 wpa_s->wps_ap_channel = cred->ap_channel;
 514
 515         wpas_wps_remove_dup_network(wpa_s, ssid);
 516
 517 #ifndef CONFIG_NO_CONFIG_WRITE
 518         if (wpa_s->conf->update_config &&
 519             wpa_config_write(wpa_s->confname, wpa_s->conf)) {
 520                 wpa_printf(MSG_DEBUG, "WPS: Failed to update configuration");
 521                 return -1;
 522         }
 523 #endif /* CONFIG_NO_CONFIG_WRITE */
 524
 525         /*
 526          * Optimize the post-WPS scan based on the channel used during
 527          * the provisioning in case EAP-Failure is not received.
 528          */
 529         wpa_s->after_wps = 5;
 530         wpa_s->wps_freq = wpa_s->assoc_freq;
 531
 532         return 0;
 533 }
 534
 535
 536 #ifdef CONFIG_P2P
 537 static void wpas_wps_pbc_overlap_cb(void *eloop_ctx, void *timeout_ctx)
 538 {
 539         struct wpa_supplicant *wpa_s = eloop_ctx;
 540         wpas_p2p_notif_pbc_overlap(wpa_s);
 541 }
 542 #endif /* CONFIG_P2P */
 543
 544
 545 static void wpa_supplicant_wps_event_m2d(struct wpa_supplicant *wpa_s,
 546                                          struct wps_event_m2d *m2d)
 547 {
 548         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_M2D
 549                 "dev_password_id=%d config_error=%d",
 550                 m2d->dev_password_id, m2d->config_error);
 551         wpas_notify_wps_event_m2d(wpa_s, m2d);
 552 #ifdef CONFIG_P2P
 553         if (wpa_s->parent && wpa_s->parent != wpa_s) {
 554                 wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_M2D
 555                         "dev_password_id=%d config_error=%d",
 556                         m2d->dev_password_id, m2d->config_error);
 557         }
 558         if (m2d->config_error == WPS_CFG_MULTIPLE_PBC_DETECTED) {
 559                 /*
 560                  * Notify P2P from eloop timeout to avoid issues with the
 561                  * interface getting removed while processing a message.
 562                  */
 563                 eloop_register_timeout(0, 0, wpas_wps_pbc_overlap_cb, wpa_s,
 564                                        NULL);
 565         }
 566 #endif /* CONFIG_P2P */
 567 }
 568
 569
 570 static const char * wps_event_fail_reason[NUM_WPS_EI_VALUES] = {
 571         "No Error", /* WPS_EI_NO_ERROR */
 572         "TKIP Only Prohibited", /* WPS_EI_SECURITY_TKIP_ONLY_PROHIBITED */
 573         "WEP Prohibited" /* WPS_EI_SECURITY_WEP_PROHIBITED */
 574 };
 575
 576 static void wpa_supplicant_wps_event_fail(struct wpa_supplicant *wpa_s,
 577                                           struct wps_event_fail *fail)
 578 {
 579         if (fail->error_indication > 0 &&
 580             fail->error_indication < NUM_WPS_EI_VALUES) {
 581                 wpa_msg(wpa_s, MSG_INFO,
 582                         WPS_EVENT_FAIL "msg=%d config_error=%d reason=%d (%s)",
 583                         fail->msg, fail->config_error, fail->error_indication,
 584                         wps_event_fail_reason[fail->error_indication]);
 585                 if (wpa_s->parent && wpa_s->parent != wpa_s)
 586                         wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_FAIL
 587                                 "msg=%d config_error=%d reason=%d (%s)",
 588                                 fail->msg, fail->config_error,
 589                                 fail->error_indication,
 590                                 wps_event_fail_reason[fail->error_indication]);
 591         } else {
 592                 wpa_msg(wpa_s, MSG_INFO,
 593                         WPS_EVENT_FAIL "msg=%d config_error=%d",
 594                         fail->msg, fail->config_error);
 595                 if (wpa_s->parent && wpa_s->parent != wpa_s)
 596                         wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_FAIL
 597                                 "msg=%d config_error=%d",
 598                                 fail->msg, fail->config_error);
 599         }
 600         wpas_clear_wps(wpa_s);
 601         wpas_notify_wps_event_fail(wpa_s, fail);
 602 #ifdef CONFIG_P2P
 603         wpas_p2p_wps_failed(wpa_s, fail);
 604 #endif /* CONFIG_P2P */
 605 }
 606
 607
 608 static void wpas_wps_reenable_networks_cb(void *eloop_ctx, void *timeout_ctx);
 609
 610 static void wpas_wps_reenable_networks(struct wpa_supplicant *wpa_s)
 611 {
 612         struct wpa_ssid *ssid;
 613         int changed = 0;
 614
 615         eloop_cancel_timeout(wpas_wps_reenable_networks_cb, wpa_s, NULL);
 616
 617         for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
 618                 if (ssid->disabled_for_connect && ssid->disabled) {
 619                         ssid->disabled_for_connect = 0;
 620                         ssid->disabled = 0;
 621                         wpas_notify_network_enabled_changed(wpa_s, ssid);
 622                         changed++;
 623                 }
 624         }
 625
 626         if (changed) {
 627 #ifndef CONFIG_NO_CONFIG_WRITE
 628                 if (wpa_s->conf->update_config &&
 629                     wpa_config_write(wpa_s->confname, wpa_s->conf)) {
 630                         wpa_printf(MSG_DEBUG, "WPS: Failed to update "
 631                                    "configuration");
 632                 }
 633 #endif /* CONFIG_NO_CONFIG_WRITE */
 634         }
 635 }
 636
 637
 638 static void wpas_wps_reenable_networks_cb(void *eloop_ctx, void *timeout_ctx)
 639 {
 640         struct wpa_supplicant *wpa_s = eloop_ctx;
 641         /* Enable the networks disabled during wpas_wps_reassoc */
 642         wpas_wps_reenable_networks(wpa_s);
 643 }
 644
 645
 646 static void wpa_supplicant_wps_event_success(struct wpa_supplicant *wpa_s)
 647 {
 648         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_SUCCESS);
 649         wpa_s->wps_success = 1;
 650         wpas_notify_wps_event_success(wpa_s);
 651         if (wpa_s->current_ssid)
 652                 wpas_clear_temp_disabled(wpa_s, wpa_s->current_ssid, 1);
 653         wpa_s->extra_blacklist_count = 0;
 654
 655         /*
 656          * Enable the networks disabled during wpas_wps_reassoc after 10
 657          * seconds. The 10 seconds timer is to allow the data connection to be
 658          * formed before allowing other networks to be selected.
 659          */
 660         eloop_register_timeout(10, 0, wpas_wps_reenable_networks_cb, wpa_s,
 661                                NULL);
 662
 663 #ifdef CONFIG_P2P
 664         wpas_p2p_wps_success(wpa_s, wpa_s->bssid, 0);
 665 #endif /* CONFIG_P2P */
 666 }
 667
 668
 669 static void wpa_supplicant_wps_event_er_ap_add(struct wpa_supplicant *wpa_s,
 670                                                struct wps_event_er_ap *ap)
 671 {
 672         char uuid_str[100];
 673         char dev_type[WPS_DEV_TYPE_BUFSIZE];
 674
 675         uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str));
 676         if (ap->pri_dev_type)
 677                 wps_dev_type_bin2str(ap->pri_dev_type, dev_type,
 678                                      sizeof(dev_type));
 679         else
 680                 dev_type[0] = '\0';
 681
 682         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_ADD "%s " MACSTR
 683                 " pri_dev_type=%s wps_state=%d |%s|%s|%s|%s|%s|%s|",
 684                 uuid_str, MAC2STR(ap->mac_addr), dev_type, ap->wps_state,
 685                 ap->friendly_name ? ap->friendly_name : "",
 686                 ap->manufacturer ? ap->manufacturer : "",
 687                 ap->model_description ? ap->model_description : "",
 688                 ap->model_name ? ap->model_name : "",
 689                 ap->manufacturer_url ? ap->manufacturer_url : "",
 690                 ap->model_url ? ap->model_url : "");
 691 }
 692
 693
 694 static void wpa_supplicant_wps_event_er_ap_remove(struct wpa_supplicant *wpa_s,
 695                                                   struct wps_event_er_ap *ap)
 696 {
 697         char uuid_str[100];
 698         uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str));
 699         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_REMOVE "%s", uuid_str);
 700 }
 701
 702
 703 static void wpa_supplicant_wps_event_er_enrollee_add(
 704         struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee)
 705 {
 706         char uuid_str[100];
 707         char dev_type[WPS_DEV_TYPE_BUFSIZE];
 708
 709         uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str));
 710         if (enrollee->pri_dev_type)
 711                 wps_dev_type_bin2str(enrollee->pri_dev_type, dev_type,
 712                                      sizeof(dev_type));
 713         else
 714                 dev_type[0] = '\0';
 715
 716         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_ADD "%s " MACSTR
 717                 " M1=%d config_methods=0x%x dev_passwd_id=%d pri_dev_type=%s "
 718                 "|%s|%s|%s|%s|%s|",
 719                 uuid_str, MAC2STR(enrollee->mac_addr), enrollee->m1_received,
 720                 enrollee->config_methods, enrollee->dev_passwd_id, dev_type,
 721                 enrollee->dev_name ? enrollee->dev_name : "",
 722                 enrollee->manufacturer ? enrollee->manufacturer : "",
 723                 enrollee->model_name ? enrollee->model_name : "",
 724                 enrollee->model_number ? enrollee->model_number : "",
 725                 enrollee->serial_number ? enrollee->serial_number : "");
 726 }
 727
 728
 729 static void wpa_supplicant_wps_event_er_enrollee_remove(
 730         struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee)
 731 {
 732         char uuid_str[100];
 733         uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str));
 734         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_REMOVE "%s " MACSTR,
 735                 uuid_str, MAC2STR(enrollee->mac_addr));
 736 }
 737
 738
 739 static void wpa_supplicant_wps_event_er_ap_settings(
 740         struct wpa_supplicant *wpa_s,
 741         struct wps_event_er_ap_settings *ap_settings)
 742 {
 743         char uuid_str[100];
 744         char key_str[65];
 745         const struct wps_credential *cred = ap_settings->cred;
 746
 747         key_str[0] = '\0';
 748         if (cred->auth_type & (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) {
 749                 if (cred->key_len >= 8 && cred->key_len <= 64) {
 750                         os_memcpy(key_str, cred->key, cred->key_len);
 751                         key_str[cred->key_len] = '\0';
 752                 }
 753         }
 754
 755         uuid_bin2str(ap_settings->uuid, uuid_str, sizeof(uuid_str));
 756         /* Use wpa_msg_ctrl to avoid showing the key in debug log */
 757         wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_SETTINGS
 758                      "uuid=%s ssid=%s auth_type=0x%04x encr_type=0x%04x "
 759                      "key=%s",
 760                      uuid_str, wpa_ssid_txt(cred->ssid, cred->ssid_len),
 761                      cred->auth_type, cred->encr_type, key_str);
 762 }
 763
 764
 765 static void wpa_supplicant_wps_event_er_set_sel_reg(
 766         struct wpa_supplicant *wpa_s,
 767         struct wps_event_er_set_selected_registrar *ev)
 768 {
 769         char uuid_str[100];
 770
 771         uuid_bin2str(ev->uuid, uuid_str, sizeof(uuid_str));
 772         switch (ev->state) {
 773         case WPS_ER_SET_SEL_REG_START:
 774                 wpa_msg(wpa_s, MSG_DEBUG, WPS_EVENT_ER_SET_SEL_REG
 775                         "uuid=%s state=START sel_reg=%d dev_passwd_id=%u "
 776                         "sel_reg_config_methods=0x%x",
 777                         uuid_str, ev->sel_reg, ev->dev_passwd_id,
 778                         ev->sel_reg_config_methods);
 779                 break;
 780         case WPS_ER_SET_SEL_REG_DONE:
 781                 wpa_msg(wpa_s, MSG_DEBUG, WPS_EVENT_ER_SET_SEL_REG
 782                         "uuid=%s state=DONE", uuid_str);
 783                 break;
 784         case WPS_ER_SET_SEL_REG_FAILED:
 785                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_SET_SEL_REG
 786                         "uuid=%s state=FAILED", uuid_str);
 787                 break;
 788         }
 789 }
 790
 791
 792 static void wpa_supplicant_wps_event(void *ctx, enum wps_event event,
 793                                      union wps_event_data *data)
 794 {
 795         struct wpa_supplicant *wpa_s = ctx;
 796         switch (event) {
 797         case WPS_EV_M2D:
 798                 wpa_supplicant_wps_event_m2d(wpa_s, &data->m2d);
 799                 break;
 800         case WPS_EV_FAIL:
 801                 wpa_supplicant_wps_event_fail(wpa_s, &data->fail);
 802                 break;
 803         case WPS_EV_SUCCESS:
 804                 wpa_supplicant_wps_event_success(wpa_s);
 805                 break;
 806         case WPS_EV_PWD_AUTH_FAIL:
 807 #ifdef CONFIG_AP
 808                 if (wpa_s->ap_iface && data->pwd_auth_fail.enrollee)
 809                         wpa_supplicant_ap_pwd_auth_fail(wpa_s);
 810 #endif /* CONFIG_AP */
 811                 break;
 812         case WPS_EV_PBC_OVERLAP:
 813                 break;
 814         case WPS_EV_PBC_TIMEOUT:
 815                 break;
 816         case WPS_EV_ER_AP_ADD:
 817                 wpa_supplicant_wps_event_er_ap_add(wpa_s, &data->ap);
 818                 break;
 819         case WPS_EV_ER_AP_REMOVE:
 820                 wpa_supplicant_wps_event_er_ap_remove(wpa_s, &data->ap);
 821                 break;
 822         case WPS_EV_ER_ENROLLEE_ADD:
 823                 wpa_supplicant_wps_event_er_enrollee_add(wpa_s,
 824                                                          &data->enrollee);
 825                 break;
 826         case WPS_EV_ER_ENROLLEE_REMOVE:
 827                 wpa_supplicant_wps_event_er_enrollee_remove(wpa_s,
 828                                                             &data->enrollee);
 829                 break;
 830         case WPS_EV_ER_AP_SETTINGS:
 831                 wpa_supplicant_wps_event_er_ap_settings(wpa_s,
 832                                                         &data->ap_settings);
 833                 break;
 834         case WPS_EV_ER_SET_SELECTED_REGISTRAR:
 835                 wpa_supplicant_wps_event_er_set_sel_reg(wpa_s,
 836                                                         &data->set_sel_reg);
 837                 break;
 838         case WPS_EV_AP_PIN_SUCCESS:
 839                 break;
 840         }
 841 }
 842
 843
 844 enum wps_request_type wpas_wps_get_req_type(struct wpa_ssid *ssid)
 845 {
 846         if (eap_is_wps_pbc_enrollee(&ssid->eap) ||
 847             eap_is_wps_pin_enrollee(&ssid->eap))
 848                 return WPS_REQ_ENROLLEE;
 849         else
 850                 return WPS_REQ_REGISTRAR;
 851 }
 852
 853
 854 static void wpas_clear_wps(struct wpa_supplicant *wpa_s)
 855 {
 856         int id;
 857         struct wpa_ssid *ssid, *remove_ssid = NULL, *prev_current;
 858
 859         prev_current = wpa_s->current_ssid;
 860
 861         /* Enable the networks disabled during wpas_wps_reassoc */
 862         wpas_wps_reenable_networks(wpa_s);
 863
 864         eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
 865
 866         /* Remove any existing WPS network from configuration */
 867         ssid = wpa_s->conf->ssid;
 868         while (ssid) {
 869                 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
 870                         if (ssid == wpa_s->current_ssid) {
 871                                 wpa_s->current_ssid = NULL;
 872                                 if (ssid != NULL)
 873                                         wpas_notify_network_changed(wpa_s);
 874                         }
 875                         id = ssid->id;
 876                         remove_ssid = ssid;
 877                 } else
 878                         id = -1;
 879                 ssid = ssid->next;
 880                 if (id >= 0) {
 881                         if (prev_current == remove_ssid) {
 882                                 wpa_sm_set_config(wpa_s->wpa, NULL);
 883                                 eapol_sm_notify_config(wpa_s->eapol, NULL,
 884                                                        NULL);
 885                         }
 886                         wpas_notify_network_removed(wpa_s, remove_ssid);
 887                         wpa_config_remove_network(wpa_s->conf, id);
 888                 }
 889         }
 890
 891         wpas_wps_clear_ap_info(wpa_s);
 892 }
 893
 894
 895 static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx)
 896 {
 897         struct wpa_supplicant *wpa_s = eloop_ctx;
 898         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_TIMEOUT "Requested operation timed "
 899                 "out");
 900         wpas_clear_wps(wpa_s);
 901 }
 902
 903
 904 static struct wpa_ssid * wpas_wps_add_network(struct wpa_supplicant *wpa_s,
 905                                               int registrar, const u8 *bssid)
 906 {
 907         struct wpa_ssid *ssid;
 908
 909         ssid = wpa_config_add_network(wpa_s->conf);
 910         if (ssid == NULL)
 911                 return NULL;
 912         wpas_notify_network_added(wpa_s, ssid);
 913         wpa_config_set_network_defaults(ssid);
 914         ssid->temporary = 1;
 915         if (wpa_config_set(ssid, "key_mgmt", "WPS", 0) < 0 ||
 916             wpa_config_set(ssid, "eap", "WSC", 0) < 0 ||
 917             wpa_config_set(ssid, "identity", registrar ?
 918                            "\"" WSC_ID_REGISTRAR "\"" :
 919                            "\"" WSC_ID_ENROLLEE "\"", 0) < 0) {
 920                 wpas_notify_network_removed(wpa_s, ssid);
 921                 wpa_config_remove_network(wpa_s->conf, ssid->id);
 922                 return NULL;
 923         }
 924
 925         if (bssid) {
 926 #ifndef CONFIG_P2P
 927                 struct wpa_bss *bss;
 928                 int count = 0;
 929 #endif /* CONFIG_P2P */
 930
 931                 os_memcpy(ssid->bssid, bssid, ETH_ALEN);
 932                 ssid->bssid_set = 1;
 933
 934                 /*
 935                  * Note: With P2P, the SSID may change at the time the WPS
 936                  * provisioning is started, so better not filter the AP based
 937                  * on the current SSID in the scan results.
 938                  */
 939 #ifndef CONFIG_P2P
 940                 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
 941                         if (os_memcmp(bssid, bss->bssid, ETH_ALEN) != 0)
 942                                 continue;
 943
 944                         os_free(ssid->ssid);
 945                         ssid->ssid = os_malloc(bss->ssid_len);
 946                         if (ssid->ssid == NULL)
 947                                 break;
 948                         os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
 949                         ssid->ssid_len = bss->ssid_len;
 950                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Picked SSID from "
 951                                           "scan results",
 952                                           ssid->ssid, ssid->ssid_len);
 953                         count++;
 954                 }
 955
 956                 if (count > 1) {
 957                         wpa_printf(MSG_DEBUG, "WPS: More than one SSID found "
 958                                    "for the AP; use wildcard");
 959                         os_free(ssid->ssid);
 960                         ssid->ssid = NULL;
 961                         ssid->ssid_len = 0;
 962                 }
 963 #endif /* CONFIG_P2P */
 964         }
 965
 966         return ssid;
 967 }
 968
 969
 970 static void wpas_wps_temp_disable(struct wpa_supplicant *wpa_s,
 971                                   struct wpa_ssid *selected)
 972 {
 973         struct wpa_ssid *ssid;
 974
 975         if (wpa_s->current_ssid)
 976                 wpa_supplicant_deauthenticate(
 977                         wpa_s, WLAN_REASON_DEAUTH_LEAVING);
 978
 979         /* Mark all other networks disabled and trigger reassociation */
 980         ssid = wpa_s->conf->ssid;
 981         while (ssid) {
 982                 int was_disabled = ssid->disabled;
 983                 ssid->disabled_for_connect = 0;
 984                 /*
 985                  * In case the network object corresponds to a persistent group
 986                  * then do not send out network disabled signal. In addition,
 987                  * do not change disabled status of persistent network objects
 988                  * from 2 to 1 should we connect to another network.
 989                  */
 990                 if (was_disabled != 2) {
 991                         ssid->disabled = ssid != selected;
 992                         if (was_disabled != ssid->disabled) {
 993                                 if (ssid->disabled)
 994                                         ssid->disabled_for_connect = 1;
 995                                 wpas_notify_network_enabled_changed(wpa_s,
 996                                                                     ssid);
 997                         }
 998                 }
 999                 ssid = ssid->next;
1000         }
1001 }
1002
1003
1004 static void wpas_wps_reassoc(struct wpa_supplicant *wpa_s,
1005                              struct wpa_ssid *selected, const u8 *bssid)
1006 {
1007         struct wpa_bss *bss;
1008
1009         wpa_s->after_wps = 0;
1010         wpa_s->known_wps_freq = 0;
1011         if (bssid) {
1012                 bss = wpa_bss_get_bssid_latest(wpa_s, bssid);
1013                 if (bss && bss->freq > 0) {
1014                         wpa_s->known_wps_freq = 1;
1015                         wpa_s->wps_freq = bss->freq;
1016                 }
1017         }
1018
1019         wpas_wps_temp_disable(wpa_s, selected);
1020
1021         wpa_s->disconnected = 0;
1022         wpa_s->reassociate = 1;
1023         wpa_s->scan_runs = 0;
1024         wpa_s->normal_scans = 0;
1025         wpa_s->wps_success = 0;
1026         wpa_s->blacklist_cleared = 0;
1027         wpa_supplicant_req_scan(wpa_s, 0, 0);
1028 }
1029
1030
1031 int wpas_wps_start_pbc(struct wpa_supplicant *wpa_s, const u8 *bssid,
1032                        int p2p_group)
1033 {
1034         struct wpa_ssid *ssid;
1035         wpas_clear_wps(wpa_s);
1036         ssid = wpas_wps_add_network(wpa_s, 0, bssid);
1037         if (ssid == NULL)
1038                 return -1;
1039         ssid->temporary = 1;
1040         ssid->p2p_group = p2p_group;
1041 #ifdef CONFIG_P2P
1042         if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) {
1043                 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1);
1044                 if (ssid->ssid) {
1045                         ssid->ssid_len = wpa_s->go_params->ssid_len;
1046                         os_memcpy(ssid->ssid, wpa_s->go_params->ssid,
1047                                   ssid->ssid_len);
1048                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP "
1049                                           "SSID", ssid->ssid, ssid->ssid_len);
1050                 }
1051         }
1052 #endif /* CONFIG_P2P */
1053         if (wpa_config_set(ssid, "phase1", "\"pbc=1\"", 0) < 0)
1054                 return -1;
1055         if (wpa_s->wps_fragment_size)
1056                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
1057         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
1058                                wpa_s, NULL);
1059         wpas_wps_reassoc(wpa_s, ssid, bssid);
1060         return 0;
1061 }
1062
1063
1064 int wpas_wps_start_pin(struct wpa_supplicant *wpa_s, const u8 *bssid,
1065                        const char *pin, int p2p_group, u16 dev_pw_id)
1066 {
1067         struct wpa_ssid *ssid;
1068         char val[128];
1069         unsigned int rpin = 0;
1070
1071         wpas_clear_wps(wpa_s);
1072         ssid = wpas_wps_add_network(wpa_s, 0, bssid);
1073         if (ssid == NULL)
1074                 return -1;
1075         ssid->temporary = 1;
1076         ssid->p2p_group = p2p_group;
1077 #ifdef CONFIG_P2P
1078         if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) {
1079                 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1);
1080                 if (ssid->ssid) {
1081                         ssid->ssid_len = wpa_s->go_params->ssid_len;
1082                         os_memcpy(ssid->ssid, wpa_s->go_params->ssid,
1083                                   ssid->ssid_len);
1084                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP "
1085                                           "SSID", ssid->ssid, ssid->ssid_len);
1086                 }
1087         }
1088 #endif /* CONFIG_P2P */
1089         if (pin)
1090                 os_snprintf(val, sizeof(val), "\"pin=%s dev_pw_id=%u\"",
1091                             pin, dev_pw_id);
1092         else {
1093                 rpin = wps_generate_pin();
1094                 os_snprintf(val, sizeof(val), "\"pin=%08d dev_pw_id=%u\"",
1095                             rpin, dev_pw_id);
1096         }
1097         if (wpa_config_set(ssid, "phase1", val, 0) < 0)
1098                 return -1;
1099         if (wpa_s->wps_fragment_size)
1100                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
1101         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
1102                                wpa_s, NULL);
1103         wpa_s->wps_ap_iter = 1;
1104         wpas_wps_reassoc(wpa_s, ssid, bssid);
1105         return rpin;
1106 }
1107
1108
1109 /* Cancel the wps pbc/pin requests */
1110 int wpas_wps_cancel(struct wpa_supplicant *wpa_s)
1111 {
1112 #ifdef CONFIG_AP
1113         if (wpa_s->ap_iface) {
1114                 wpa_printf(MSG_DEBUG, "WPS: Cancelling in AP mode");
1115                 return wpa_supplicant_ap_wps_cancel(wpa_s);
1116         }
1117 #endif /* CONFIG_AP */
1118
1119         if (wpa_s->wpa_state == WPA_SCANNING ||
1120             wpa_s->wpa_state == WPA_DISCONNECTED) {
1121                 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - cancel scan");
1122                 wpa_supplicant_cancel_scan(wpa_s);
1123                 wpas_clear_wps(wpa_s);
1124         } else if (wpa_s->wpa_state >= WPA_ASSOCIATED) {
1125                 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - "
1126                            "deauthenticate");
1127                 wpa_supplicant_deauthenticate(wpa_s,
1128                                               WLAN_REASON_DEAUTH_LEAVING);
1129                 wpas_clear_wps(wpa_s);
1130         } else {
1131                 wpas_wps_reenable_networks(wpa_s);
1132                 wpas_wps_clear_ap_info(wpa_s);
1133         }
1134
1135         return 0;
1136 }
1137
1138
1139 int wpas_wps_start_reg(struct wpa_supplicant *wpa_s, const u8 *bssid,
1140                        const char *pin, struct wps_new_ap_settings *settings)
1141 {
1142         struct wpa_ssid *ssid;
1143         char val[200];
1144         char *pos, *end;
1145         int res;
1146
1147         if (!pin)
1148                 return -1;
1149         wpas_clear_wps(wpa_s);
1150         ssid = wpas_wps_add_network(wpa_s, 1, bssid);
1151         if (ssid == NULL)
1152                 return -1;
1153         ssid->temporary = 1;
1154         pos = val;
1155         end = pos + sizeof(val);
1156         res = os_snprintf(pos, end - pos, "\"pin=%s", pin);
1157         if (res < 0 || res >= end - pos)
1158                 return -1;
1159         pos += res;
1160         if (settings) {
1161                 res = os_snprintf(pos, end - pos, " new_ssid=%s new_auth=%s "
1162                                   "new_encr=%s new_key=%s",
1163                                   settings->ssid_hex, settings->auth,
1164                                   settings->encr, settings->key_hex);
1165                 if (res < 0 || res >= end - pos)
1166                         return -1;
1167                 pos += res;
1168         }
1169         res = os_snprintf(pos, end - pos, "\"");
1170         if (res < 0 || res >= end - pos)
1171                 return -1;
1172         if (wpa_config_set(ssid, "phase1", val, 0) < 0)
1173                 return -1;
1174         if (wpa_s->wps_fragment_size)
1175                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
1176         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
1177                                wpa_s, NULL);
1178         wpas_wps_reassoc(wpa_s, ssid, bssid);
1179         return 0;
1180 }
1181
1182
1183 static int wpas_wps_new_psk_cb(void *ctx, const u8 *mac_addr, const u8 *psk,
1184                                size_t psk_len)
1185 {
1186         wpa_printf(MSG_DEBUG, "WPS: Received new WPA/WPA2-PSK from WPS for "
1187                    "STA " MACSTR, MAC2STR(mac_addr));
1188         wpa_hexdump_key(MSG_DEBUG, "Per-device PSK", psk, psk_len);
1189
1190         /* TODO */
1191
1192         return 0;
1193 }
1194
1195
1196 static void wpas_wps_pin_needed_cb(void *ctx, const u8 *uuid_e,
1197                                    const struct wps_device_data *dev)
1198 {
1199         char uuid[40], txt[400];
1200         int len;
1201         char devtype[WPS_DEV_TYPE_BUFSIZE];
1202         if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
1203                 return;
1204         wpa_printf(MSG_DEBUG, "WPS: PIN needed for UUID-E %s", uuid);
1205         len = os_snprintf(txt, sizeof(txt), "WPS-EVENT-PIN-NEEDED %s " MACSTR
1206                           " [%s|%s|%s|%s|%s|%s]",
1207                           uuid, MAC2STR(dev->mac_addr), dev->device_name,
1208                           dev->manufacturer, dev->model_name,
1209                           dev->model_number, dev->serial_number,
1210                           wps_dev_type_bin2str(dev->pri_dev_type, devtype,
1211                                                sizeof(devtype)));
1212         if (len > 0 && len < (int) sizeof(txt))
1213                 wpa_printf(MSG_INFO, "%s", txt);
1214 }
1215
1216
1217 static void wpas_wps_set_sel_reg_cb(void *ctx, int sel_reg, u16 dev_passwd_id,
1218                                     u16 sel_reg_config_methods)
1219 {
1220 #ifdef CONFIG_WPS_ER
1221         struct wpa_supplicant *wpa_s = ctx;
1222
1223         if (wpa_s->wps_er == NULL)
1224                 return;
1225         wpa_printf(MSG_DEBUG, "WPS ER: SetSelectedRegistrar - sel_reg=%d "
1226                    "dev_password_id=%u sel_reg_config_methods=0x%x",
1227                    sel_reg, dev_passwd_id, sel_reg_config_methods);
1228         wps_er_set_sel_reg(wpa_s->wps_er, sel_reg, dev_passwd_id,
1229                            sel_reg_config_methods);
1230 #endif /* CONFIG_WPS_ER */
1231 }
1232
1233
1234 static u16 wps_fix_config_methods(u16 config_methods)
1235 {
1236 #ifdef CONFIG_WPS2
1237         if ((config_methods &
1238              (WPS_CONFIG_DISPLAY | WPS_CONFIG_VIRT_DISPLAY |
1239               WPS_CONFIG_PHY_DISPLAY)) == WPS_CONFIG_DISPLAY) {
1240                 wpa_printf(MSG_INFO, "WPS: Converting display to "
1241                            "virtual_display for WPS 2.0 compliance");
1242                 config_methods |= WPS_CONFIG_VIRT_DISPLAY;
1243         }
1244         if ((config_methods &
1245              (WPS_CONFIG_PUSHBUTTON | WPS_CONFIG_VIRT_PUSHBUTTON |
1246               WPS_CONFIG_PHY_PUSHBUTTON)) == WPS_CONFIG_PUSHBUTTON) {
1247                 wpa_printf(MSG_INFO, "WPS: Converting push_button to "
1248                            "virtual_push_button for WPS 2.0 compliance");
1249                 config_methods |= WPS_CONFIG_VIRT_PUSHBUTTON;
1250         }
1251 #endif /* CONFIG_WPS2 */
1252
1253         return config_methods;
1254 }
1255
1256
1257 static void wpas_wps_set_uuid(struct wpa_supplicant *wpa_s,
1258                               struct wps_context *wps)
1259 {
1260         wpa_printf(MSG_DEBUG, "WPS: Set UUID for interface %s", wpa_s->ifname);
1261         if (is_nil_uuid(wpa_s->conf->uuid)) {
1262                 struct wpa_supplicant *first;
1263                 first = wpa_s->global->ifaces;
1264                 while (first && first->next)
1265                         first = first->next;
1266                 if (first && first != wpa_s) {
1267                         if (wps != wpa_s->global->ifaces->wps)
1268                                 os_memcpy(wps->uuid,
1269                                           wpa_s->global->ifaces->wps->uuid,
1270                                           WPS_UUID_LEN);
1271                         wpa_hexdump(MSG_DEBUG, "WPS: UUID from the first "
1272                                     "interface", wps->uuid, WPS_UUID_LEN);
1273                 } else {
1274                         uuid_gen_mac_addr(wpa_s->own_addr, wps->uuid);
1275                         wpa_hexdump(MSG_DEBUG, "WPS: UUID based on MAC "
1276                                     "address", wps->uuid, WPS_UUID_LEN);
1277                 }
1278         } else {
1279                 os_memcpy(wps->uuid, wpa_s->conf->uuid, WPS_UUID_LEN);
1280                 wpa_hexdump(MSG_DEBUG, "WPS: UUID based on configuration",
1281                             wps->uuid, WPS_UUID_LEN);
1282         }
1283 }
1284
1285
1286 static void wpas_wps_set_vendor_ext_m1(struct wpa_supplicant *wpa_s,
1287                                        struct wps_context *wps)
1288 {
1289         wpabuf_free(wps->dev.vendor_ext_m1);
1290         wps->dev.vendor_ext_m1 = NULL;
1291
1292         if (wpa_s->conf->wps_vendor_ext_m1) {
1293                 wps->dev.vendor_ext_m1 =
1294                         wpabuf_dup(wpa_s->conf->wps_vendor_ext_m1);
1295                 if (!wps->dev.vendor_ext_m1) {
1296                         wpa_printf(MSG_ERROR, "WPS: Cannot "
1297                                    "allocate memory for vendor_ext_m1");
1298                 }
1299         }
1300 }
1301
1302
1303 int wpas_wps_init(struct wpa_supplicant *wpa_s)
1304 {
1305         struct wps_context *wps;
1306         struct wps_registrar_config rcfg;
1307         struct hostapd_hw_modes *modes;
1308         u16 m;
1309
1310         wps = os_zalloc(sizeof(*wps));
1311         if (wps == NULL)
1312                 return -1;
1313
1314         wps->cred_cb = wpa_supplicant_wps_cred;
1315         wps->event_cb = wpa_supplicant_wps_event;
1316         wps->cb_ctx = wpa_s;
1317
1318         wps->dev.device_name = wpa_s->conf->device_name;
1319         wps->dev.manufacturer = wpa_s->conf->manufacturer;
1320         wps->dev.model_name = wpa_s->conf->model_name;
1321         wps->dev.model_number = wpa_s->conf->model_number;
1322         wps->dev.serial_number = wpa_s->conf->serial_number;
1323         wps->config_methods =
1324                 wps_config_methods_str2bin(wpa_s->conf->config_methods);
1325         if ((wps->config_methods & (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) ==
1326             (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
1327                 wpa_printf(MSG_ERROR, "WPS: Both Label and Display config "
1328                            "methods are not allowed at the same time");
1329                 os_free(wps);
1330                 return -1;
1331         }
1332         wps->config_methods = wps_fix_config_methods(wps->config_methods);
1333         wps->dev.config_methods = wps->config_methods;
1334         os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type,
1335                   WPS_DEV_TYPE_LEN);
1336
1337         wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
1338         os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type,
1339                   WPS_DEV_TYPE_LEN * wps->dev.num_sec_dev_types);
1340
1341         wpas_wps_set_vendor_ext_m1(wpa_s, wps);
1342
1343         wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
1344         modes = wpa_s->hw.modes;
1345         if (modes) {
1346                 for (m = 0; m < wpa_s->hw.num_modes; m++) {
1347                         if (modes[m].mode == HOSTAPD_MODE_IEEE80211B ||
1348                             modes[m].mode == HOSTAPD_MODE_IEEE80211G)
1349                                 wps->dev.rf_bands |= WPS_RF_24GHZ;
1350                         else if (modes[m].mode == HOSTAPD_MODE_IEEE80211A)
1351                                 wps->dev.rf_bands |= WPS_RF_50GHZ;
1352                 }
1353         }
1354         if (wps->dev.rf_bands == 0) {
1355                 /*
1356                  * Default to claiming support for both bands if the driver
1357                  * does not provide support for fetching supported bands.
1358                  */
1359                 wps->dev.rf_bands = WPS_RF_24GHZ | WPS_RF_50GHZ;
1360         }
1361         os_memcpy(wps->dev.mac_addr, wpa_s->own_addr, ETH_ALEN);
1362         wpas_wps_set_uuid(wpa_s, wps);
1363
1364         wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK;
1365         wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP;
1366
1367         os_memset(&rcfg, 0, sizeof(rcfg));
1368         rcfg.new_psk_cb = wpas_wps_new_psk_cb;
1369         rcfg.pin_needed_cb = wpas_wps_pin_needed_cb;
1370         rcfg.set_sel_reg_cb = wpas_wps_set_sel_reg_cb;
1371         rcfg.cb_ctx = wpa_s;
1372
1373         wps->registrar = wps_registrar_init(wps, &rcfg);
1374         if (wps->registrar == NULL) {
1375                 wpa_printf(MSG_DEBUG, "Failed to initialize WPS Registrar");
1376                 os_free(wps);
1377                 return -1;
1378         }
1379
1380         wpa_s->wps = wps;
1381
1382         return 0;
1383 }
1384
1385
1386 void wpas_wps_deinit(struct wpa_supplicant *wpa_s)
1387 {
1388         eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
1389         eloop_cancel_timeout(wpas_wps_reenable_networks_cb, wpa_s, NULL);
1390         wpas_wps_clear_ap_info(wpa_s);
1391
1392         if (wpa_s->wps == NULL)
1393                 return;
1394
1395 #ifdef CONFIG_WPS_ER
1396         wps_er_deinit(wpa_s->wps_er, NULL, NULL);
1397         wpa_s->wps_er = NULL;
1398 #endif /* CONFIG_WPS_ER */
1399
1400         wps_registrar_deinit(wpa_s->wps->registrar);
1401         wpabuf_free(wpa_s->wps->dh_pubkey);
1402         wpabuf_free(wpa_s->wps->dh_privkey);
1403         wpabuf_free(wpa_s->wps->dev.vendor_ext_m1);
1404         os_free(wpa_s->wps->network_key);
1405         os_free(wpa_s->wps);
1406         wpa_s->wps = NULL;
1407 }
1408
1409
1410 int wpas_wps_ssid_bss_match(struct wpa_supplicant *wpa_s,
1411                             struct wpa_ssid *ssid, struct wpa_bss *bss)
1412 {
1413         struct wpabuf *wps_ie;
1414
1415         if (!(ssid->key_mgmt & WPA_KEY_MGMT_WPS))
1416                 return -1;
1417
1418         wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1419         if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
1420                 if (!wps_ie) {
1421                         wpa_printf(MSG_DEBUG, "   skip - non-WPS AP");
1422                         return 0;
1423                 }
1424
1425                 if (!wps_is_selected_pbc_registrar(wps_ie)) {
1426                         wpa_printf(MSG_DEBUG, "   skip - WPS AP "
1427                                    "without active PBC Registrar");
1428                         wpabuf_free(wps_ie);
1429                         return 0;
1430                 }
1431
1432                 /* TODO: overlap detection */
1433                 wpa_printf(MSG_DEBUG, "   selected based on WPS IE "
1434                            "(Active PBC)");
1435                 wpabuf_free(wps_ie);
1436                 return 1;
1437         }
1438
1439         if (eap_is_wps_pin_enrollee(&ssid->eap)) {
1440                 if (!wps_ie) {
1441                         wpa_printf(MSG_DEBUG, "   skip - non-WPS AP");
1442                         return 0;
1443                 }
1444
1445                 /*
1446                  * Start with WPS APs that advertise our address as an
1447                  * authorized MAC (v2.0) or active PIN Registrar (v1.0) and
1448                  * allow any WPS AP after couple of scans since some APs do not
1449                  * set Selected Registrar attribute properly when using
1450                  * external Registrar.
1451                  */
1452                 if (!wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1)) {
1453                         if (wpa_s->scan_runs < WPS_PIN_SCAN_IGNORE_SEL_REG) {
1454                                 wpa_printf(MSG_DEBUG, "   skip - WPS AP "
1455                                            "without active PIN Registrar");
1456                                 wpabuf_free(wps_ie);
1457                                 return 0;
1458                         }
1459                         wpa_printf(MSG_DEBUG, "   selected based on WPS IE");
1460                 } else {
1461                         wpa_printf(MSG_DEBUG, "   selected based on WPS IE "
1462                                    "(Authorized MAC or Active PIN)");
1463                 }
1464                 wpabuf_free(wps_ie);
1465                 return 1;
1466         }
1467
1468         if (wps_ie) {
1469                 wpa_printf(MSG_DEBUG, "   selected based on WPS IE");
1470                 wpabuf_free(wps_ie);
1471                 return 1;
1472         }
1473
1474         return -1;
1475 }
1476
1477
1478 int wpas_wps_ssid_wildcard_ok(struct wpa_supplicant *wpa_s,
1479                               struct wpa_ssid *ssid,
1480                               struct wpa_bss *bss)
1481 {
1482         struct wpabuf *wps_ie = NULL;
1483         int ret = 0;
1484
1485         if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
1486                 wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1487                 if (wps_ie && wps_is_selected_pbc_registrar(wps_ie)) {
1488                         /* allow wildcard SSID for WPS PBC */
1489                         ret = 1;
1490                 }
1491         } else if (eap_is_wps_pin_enrollee(&ssid->eap)) {
1492                 wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1493                 if (wps_ie &&
1494                     (wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1) ||
1495                      wpa_s->scan_runs >= WPS_PIN_SCAN_IGNORE_SEL_REG)) {
1496                         /* allow wildcard SSID for WPS PIN */
1497                         ret = 1;
1498                 }
1499         }
1500
1501         if (!ret && ssid->bssid_set &&
1502             os_memcmp(ssid->bssid, bss->bssid, ETH_ALEN) == 0) {
1503                 /* allow wildcard SSID due to hardcoded BSSID match */
1504                 ret = 1;
1505         }
1506
1507 #ifdef CONFIG_WPS_STRICT
1508         if (wps_ie) {
1509                 if (wps_validate_beacon_probe_resp(wps_ie, bss->beacon_ie_len >
1510                                                    0, bss->bssid) < 0)
1511                         ret = 0;
1512                 if (bss->beacon_ie_len) {
1513                         struct wpabuf *bcn_wps;
1514                         bcn_wps = wpa_bss_get_vendor_ie_multi_beacon(
1515                                 bss, WPS_IE_VENDOR_TYPE);
1516                         if (bcn_wps == NULL) {
1517                                 wpa_printf(MSG_DEBUG, "WPS: Mandatory WPS IE "
1518                                            "missing from AP Beacon");
1519                                 ret = 0;
1520                         } else {
1521                                 if (wps_validate_beacon(wps_ie) < 0)
1522                                         ret = 0;
1523                                 wpabuf_free(bcn_wps);
1524                         }
1525                 }
1526         }
1527 #endif /* CONFIG_WPS_STRICT */
1528
1529         wpabuf_free(wps_ie);
1530
1531         return ret;
1532 }
1533
1534
1535 int wpas_wps_scan_pbc_overlap(struct wpa_supplicant *wpa_s,
1536                               struct wpa_bss *selected, struct wpa_ssid *ssid)
1537 {
1538         const u8 *sel_uuid, *uuid;
1539         struct wpabuf *wps_ie;
1540         int ret = 0;
1541         struct wpa_bss *bss;
1542
1543         if (!eap_is_wps_pbc_enrollee(&ssid->eap))
1544                 return 0;
1545
1546         wpa_printf(MSG_DEBUG, "WPS: Check whether PBC session overlap is "
1547                    "present in scan results; selected BSSID " MACSTR,
1548                    MAC2STR(selected->bssid));
1549
1550         /* Make sure that only one AP is in active PBC mode */
1551         wps_ie = wpa_bss_get_vendor_ie_multi(selected, WPS_IE_VENDOR_TYPE);
1552         if (wps_ie) {
1553                 sel_uuid = wps_get_uuid_e(wps_ie);
1554                 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the selected BSS",
1555                             sel_uuid, UUID_LEN);
1556         } else {
1557                 wpa_printf(MSG_DEBUG, "WPS: Selected BSS does not include "
1558                            "WPS IE?!");
1559                 sel_uuid = NULL;
1560         }
1561
1562         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1563                 struct wpabuf *ie;
1564                 if (bss == selected)
1565                         continue;
1566                 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1567                 if (!ie)
1568                         continue;
1569                 if (!wps_is_selected_pbc_registrar(ie)) {
1570                         wpabuf_free(ie);
1571                         continue;
1572                 }
1573                 wpa_printf(MSG_DEBUG, "WPS: Another BSS in active PBC mode: "
1574                            MACSTR, MAC2STR(bss->bssid));
1575                 uuid = wps_get_uuid_e(ie);
1576                 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the other BSS",
1577                             uuid, UUID_LEN);
1578                 if (sel_uuid == NULL || uuid == NULL ||
1579                     os_memcmp(sel_uuid, uuid, UUID_LEN) != 0) {
1580                         ret = 1; /* PBC overlap */
1581                         wpa_msg(wpa_s, MSG_INFO, "WPS: PBC overlap detected: "
1582                                 MACSTR " and " MACSTR,
1583                                 MAC2STR(selected->bssid),
1584                                 MAC2STR(bss->bssid));
1585                         wpabuf_free(ie);
1586                         break;
1587                 }
1588
1589                 /* TODO: verify that this is reasonable dual-band situation */
1590
1591                 wpabuf_free(ie);
1592         }
1593
1594         wpabuf_free(wps_ie);
1595
1596         return ret;
1597 }
1598
1599
1600 void wpas_wps_notify_scan_results(struct wpa_supplicant *wpa_s)
1601 {
1602         struct wpa_bss *bss;
1603         unsigned int pbc = 0, auth = 0, pin = 0, wps = 0;
1604
1605         if (wpa_s->disconnected || wpa_s->wpa_state >= WPA_ASSOCIATED)
1606                 return;
1607
1608         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1609                 struct wpabuf *ie;
1610                 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1611                 if (!ie)
1612                         continue;
1613                 if (wps_is_selected_pbc_registrar(ie))
1614                         pbc++;
1615                 else if (wps_is_addr_authorized(ie, wpa_s->own_addr, 0))
1616                         auth++;
1617                 else if (wps_is_selected_pin_registrar(ie))
1618                         pin++;
1619                 else
1620                         wps++;
1621                 wpabuf_free(ie);
1622         }
1623
1624         if (pbc)
1625                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PBC);
1626         else if (auth)
1627                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_AUTH);
1628         else if (pin)
1629                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PIN);
1630         else if (wps)
1631                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE);
1632 }
1633
1634
1635 int wpas_wps_searching(struct wpa_supplicant *wpa_s)
1636 {
1637         struct wpa_ssid *ssid;
1638
1639         for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1640                 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && !ssid->disabled)
1641                         return 1;
1642         }
1643
1644         return 0;
1645 }
1646
1647
1648 int wpas_wps_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
1649                               char *end)
1650 {
1651         struct wpabuf *wps_ie;
1652         int ret;
1653
1654         wps_ie = ieee802_11_vendor_ie_concat(ies, ies_len, WPS_DEV_OUI_WFA);
1655         if (wps_ie == NULL)
1656                 return 0;
1657
1658         ret = wps_attr_text(wps_ie, buf, end);
1659         wpabuf_free(wps_ie);
1660         return ret;
1661 }
1662
1663
1664 int wpas_wps_er_start(struct wpa_supplicant *wpa_s, const char *filter)
1665 {
1666 #ifdef CONFIG_WPS_ER
1667         if (wpa_s->wps_er) {
1668                 wps_er_refresh(wpa_s->wps_er);
1669                 return 0;
1670         }
1671         wpa_s->wps_er = wps_er_init(wpa_s->wps, wpa_s->ifname, filter);
1672         if (wpa_s->wps_er == NULL)
1673                 return -1;
1674         return 0;
1675 #else /* CONFIG_WPS_ER */
1676         return 0;
1677 #endif /* CONFIG_WPS_ER */
1678 }
1679
1680
1681 int wpas_wps_er_stop(struct wpa_supplicant *wpa_s)
1682 {
1683 #ifdef CONFIG_WPS_ER
1684         wps_er_deinit(wpa_s->wps_er, NULL, NULL);
1685         wpa_s->wps_er = NULL;
1686 #endif /* CONFIG_WPS_ER */
1687         return 0;
1688 }
1689
1690
1691 #ifdef CONFIG_WPS_ER
1692 int wpas_wps_er_add_pin(struct wpa_supplicant *wpa_s, const u8 *addr,
1693                         const char *uuid, const char *pin)
1694 {
1695         u8 u[UUID_LEN];
1696         const u8 *use_uuid = NULL;
1697         u8 addr_buf[ETH_ALEN];
1698
1699         if (os_strcmp(uuid, "any") == 0) {
1700         } else if (uuid_str2bin(uuid, u) == 0) {
1701                 use_uuid = u;
1702         } else if (hwaddr_aton(uuid, addr_buf) == 0) {
1703                 use_uuid = wps_er_get_sta_uuid(wpa_s->wps_er, addr_buf);
1704                 if (use_uuid == NULL)
1705                         return -1;
1706         } else
1707                 return -1;
1708         return wps_registrar_add_pin(wpa_s->wps->registrar, addr,
1709                                      use_uuid,
1710                                      (const u8 *) pin, os_strlen(pin), 300);
1711 }
1712
1713
1714 int wpas_wps_er_pbc(struct wpa_supplicant *wpa_s, const char *uuid)
1715 {
1716         u8 u[UUID_LEN], *use_uuid = NULL;
1717         u8 addr[ETH_ALEN], *use_addr = NULL;
1718
1719         if (uuid_str2bin(uuid, u) == 0)
1720                 use_uuid = u;
1721         else if (hwaddr_aton(uuid, addr) == 0)
1722                 use_addr = addr;
1723         else
1724                 return -1;
1725         return wps_er_pbc(wpa_s->wps_er, use_uuid, use_addr);
1726 }
1727
1728
1729 int wpas_wps_er_learn(struct wpa_supplicant *wpa_s, const char *uuid,
1730                       const char *pin)
1731 {
1732         u8 u[UUID_LEN], *use_uuid = NULL;
1733         u8 addr[ETH_ALEN], *use_addr = NULL;
1734
1735         if (uuid_str2bin(uuid, u) == 0)
1736                 use_uuid = u;
1737         else if (hwaddr_aton(uuid, addr) == 0)
1738                 use_addr = addr;
1739         else
1740                 return -1;
1741
1742         return wps_er_learn(wpa_s->wps_er, use_uuid, use_addr, (const u8 *) pin,
1743                             os_strlen(pin));
1744 }
1745
1746
1747 static int wpas_wps_network_to_cred(struct wpa_ssid *ssid,
1748                                     struct wps_credential *cred)
1749 {
1750         os_memset(cred, 0, sizeof(*cred));
1751         if (ssid->ssid_len > 32)
1752                 return -1;
1753         os_memcpy(cred->ssid, ssid->ssid, ssid->ssid_len);
1754         cred->ssid_len = ssid->ssid_len;
1755         if (ssid->key_mgmt & WPA_KEY_MGMT_PSK) {
1756                 cred->auth_type = (ssid->proto & WPA_PROTO_RSN) ?
1757                         WPS_AUTH_WPA2PSK : WPS_AUTH_WPAPSK;
1758                 if (ssid->pairwise_cipher & WPA_CIPHER_CCMP)
1759                         cred->encr_type = WPS_ENCR_AES;
1760                 else
1761                         cred->encr_type = WPS_ENCR_TKIP;
1762                 if (ssid->passphrase) {
1763                         cred->key_len = os_strlen(ssid->passphrase);
1764                         if (cred->key_len >= 64)
1765                                 return -1;
1766                         os_memcpy(cred->key, ssid->passphrase, cred->key_len);
1767                 } else if (ssid->psk_set) {
1768                         cred->key_len = 32;
1769                         os_memcpy(cred->key, ssid->psk, 32);
1770                 } else
1771                         return -1;
1772         } else {
1773                 cred->auth_type = WPS_AUTH_OPEN;
1774                 cred->encr_type = WPS_ENCR_NONE;
1775         }
1776
1777         return 0;
1778 }
1779
1780
1781 int wpas_wps_er_set_config(struct wpa_supplicant *wpa_s, const char *uuid,
1782                            int id)
1783 {
1784         u8 u[UUID_LEN], *use_uuid = NULL;
1785         u8 addr[ETH_ALEN], *use_addr = NULL;
1786         struct wpa_ssid *ssid;
1787         struct wps_credential cred;
1788
1789         if (uuid_str2bin(uuid, u) == 0)
1790                 use_uuid = u;
1791         else if (hwaddr_aton(uuid, addr) == 0)
1792                 use_addr = addr;
1793         else
1794                 return -1;
1795         ssid = wpa_config_get_network(wpa_s->conf, id);
1796         if (ssid == NULL || ssid->ssid == NULL)
1797                 return -1;
1798
1799         if (wpas_wps_network_to_cred(ssid, &cred) < 0)
1800                 return -1;
1801         return wps_er_set_config(wpa_s->wps_er, use_uuid, use_addr, &cred);
1802 }
1803
1804
1805 int wpas_wps_er_config(struct wpa_supplicant *wpa_s, const char *uuid,
1806                        const char *pin, struct wps_new_ap_settings *settings)
1807 {
1808         u8 u[UUID_LEN], *use_uuid = NULL;
1809         u8 addr[ETH_ALEN], *use_addr = NULL;
1810         struct wps_credential cred;
1811         size_t len;
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         if (settings->ssid_hex == NULL || settings->auth == NULL ||
1820             settings->encr == NULL || settings->key_hex == NULL)
1821                 return -1;
1822
1823         os_memset(&cred, 0, sizeof(cred));
1824         len = os_strlen(settings->ssid_hex);
1825         if ((len & 1) || len > 2 * sizeof(cred.ssid) ||
1826             hexstr2bin(settings->ssid_hex, cred.ssid, len / 2))
1827                 return -1;
1828         cred.ssid_len = len / 2;
1829
1830         len = os_strlen(settings->key_hex);
1831         if ((len & 1) || len > 2 * sizeof(cred.key) ||
1832             hexstr2bin(settings->key_hex, cred.key, len / 2))
1833                 return -1;
1834         cred.key_len = len / 2;
1835
1836         if (os_strcmp(settings->auth, "OPEN") == 0)
1837                 cred.auth_type = WPS_AUTH_OPEN;
1838         else if (os_strcmp(settings->auth, "WPAPSK") == 0)
1839                 cred.auth_type = WPS_AUTH_WPAPSK;
1840         else if (os_strcmp(settings->auth, "WPA2PSK") == 0)
1841                 cred.auth_type = WPS_AUTH_WPA2PSK;
1842         else
1843                 return -1;
1844
1845         if (os_strcmp(settings->encr, "NONE") == 0)
1846                 cred.encr_type = WPS_ENCR_NONE;
1847         else if (os_strcmp(settings->encr, "WEP") == 0)
1848                 cred.encr_type = WPS_ENCR_WEP;
1849         else if (os_strcmp(settings->encr, "TKIP") == 0)
1850                 cred.encr_type = WPS_ENCR_TKIP;
1851         else if (os_strcmp(settings->encr, "CCMP") == 0)
1852                 cred.encr_type = WPS_ENCR_AES;
1853         else
1854                 return -1;
1855
1856         return wps_er_config(wpa_s->wps_er, use_uuid, use_addr,
1857                              (const u8 *) pin, os_strlen(pin), &cred);
1858 }
1859
1860
1861 #ifdef CONFIG_WPS_NFC
1862 struct wpabuf * wpas_wps_er_nfc_config_token(struct wpa_supplicant *wpa_s,
1863                                              int ndef, const char *uuid)
1864 {
1865         struct wpabuf *ret;
1866         u8 u[UUID_LEN], *use_uuid = NULL;
1867         u8 addr[ETH_ALEN], *use_addr = NULL;
1868
1869         if (!wpa_s->wps_er)
1870                 return NULL;
1871
1872         if (uuid_str2bin(uuid, u) == 0)
1873                 use_uuid = u;
1874         else if (hwaddr_aton(uuid, addr) == 0)
1875                 use_addr = addr;
1876         else
1877                 return NULL;
1878
1879         ret = wps_er_nfc_config_token(wpa_s->wps_er, use_uuid, use_addr);
1880         if (ndef && ret) {
1881                 struct wpabuf *tmp;
1882                 tmp = ndef_build_wifi(ret);
1883                 wpabuf_free(ret);
1884                 if (tmp == NULL)
1885                         return NULL;
1886                 ret = tmp;
1887         }
1888
1889         return ret;
1890 }
1891 #endif /* CONFIG_WPS_NFC */
1892
1893
1894 static int callbacks_pending = 0;
1895
1896 static void wpas_wps_terminate_cb(void *ctx)
1897 {
1898         wpa_printf(MSG_DEBUG, "WPS ER: Terminated");
1899         if (--callbacks_pending <= 0)
1900                 eloop_terminate();
1901 }
1902 #endif /* CONFIG_WPS_ER */
1903
1904
1905 int wpas_wps_terminate_pending(struct wpa_supplicant *wpa_s)
1906 {
1907 #ifdef CONFIG_WPS_ER
1908         if (wpa_s->wps_er) {
1909                 callbacks_pending++;
1910                 wps_er_deinit(wpa_s->wps_er, wpas_wps_terminate_cb, wpa_s);
1911                 wpa_s->wps_er = NULL;
1912                 return 1;
1913         }
1914 #endif /* CONFIG_WPS_ER */
1915         return 0;
1916 }
1917
1918
1919 int wpas_wps_in_progress(struct wpa_supplicant *wpa_s)
1920 {
1921         struct wpa_ssid *ssid;
1922
1923         for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1924                 if (!ssid->disabled && ssid->key_mgmt == WPA_KEY_MGMT_WPS)
1925                         return 1;
1926         }
1927
1928         return 0;
1929 }
1930
1931
1932 void wpas_wps_update_config(struct wpa_supplicant *wpa_s)
1933 {
1934         struct wps_context *wps = wpa_s->wps;
1935
1936         if (wps == NULL)
1937                 return;
1938
1939         if (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS) {
1940                 wps->config_methods = wps_config_methods_str2bin(
1941                         wpa_s->conf->config_methods);
1942                 if ((wps->config_methods &
1943                      (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) ==
1944                     (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
1945                         wpa_printf(MSG_ERROR, "WPS: Both Label and Display "
1946                                    "config methods are not allowed at the "
1947                                    "same time");
1948                         wps->config_methods &= ~WPS_CONFIG_LABEL;
1949                 }
1950         }
1951         wps->config_methods = wps_fix_config_methods(wps->config_methods);
1952         wps->dev.config_methods = wps->config_methods;
1953
1954         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
1955                 os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type,
1956                           WPS_DEV_TYPE_LEN);
1957
1958         if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE) {
1959                 wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
1960                 os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type,
1961                           wps->dev.num_sec_dev_types * WPS_DEV_TYPE_LEN);
1962         }
1963
1964         if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION)
1965                 wpas_wps_set_vendor_ext_m1(wpa_s, wps);
1966
1967         if (wpa_s->conf->changed_parameters & CFG_CHANGED_OS_VERSION)
1968                 wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
1969
1970         if (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID)
1971                 wpas_wps_set_uuid(wpa_s, wps);
1972
1973         if (wpa_s->conf->changed_parameters &
1974             (CFG_CHANGED_DEVICE_NAME | CFG_CHANGED_WPS_STRING)) {
1975                 /* Update pointers to make sure they refer current values */
1976                 wps->dev.device_name = wpa_s->conf->device_name;
1977                 wps->dev.manufacturer = wpa_s->conf->manufacturer;
1978                 wps->dev.model_name = wpa_s->conf->model_name;
1979                 wps->dev.model_number = wpa_s->conf->model_number;
1980                 wps->dev.serial_number = wpa_s->conf->serial_number;
1981         }
1982 }
1983
1984
1985 #ifdef CONFIG_WPS_NFC
1986
1987 #ifdef CONFIG_WPS_ER
1988 static struct wpabuf *
1989 wpas_wps_network_config_token(struct wpa_supplicant *wpa_s, int ndef,
1990                               struct wpa_ssid *ssid)
1991 {
1992         struct wpabuf *ret;
1993         struct wps_credential cred;
1994
1995         if (wpas_wps_network_to_cred(ssid, &cred) < 0)
1996                 return NULL;
1997
1998         ret = wps_er_config_token_from_cred(wpa_s->wps, &cred);
1999
2000         if (ndef && ret) {
2001                 struct wpabuf *tmp;
2002                 tmp = ndef_build_wifi(ret);
2003                 wpabuf_free(ret);
2004                 if (tmp == NULL)
2005                         return NULL;
2006                 ret = tmp;
2007         }
2008
2009         return ret;
2010 }
2011 #endif /* CONFIG_WPS_ER */
2012
2013
2014 struct wpabuf * wpas_wps_nfc_config_token(struct wpa_supplicant *wpa_s,
2015                                           int ndef, const char *id_str)
2016 {
2017 #ifdef CONFIG_WPS_ER
2018         if (id_str) {
2019                 int id;
2020                 char *end = NULL;
2021                 struct wpa_ssid *ssid;
2022
2023                 id = strtol(id_str, &end, 10);
2024                 if (end && *end)
2025                         return NULL;
2026
2027                 ssid = wpa_config_get_network(wpa_s->conf, id);
2028                 if (ssid == NULL)
2029                         return NULL;
2030                 return wpas_wps_network_config_token(wpa_s, ndef, ssid);
2031         }
2032 #endif /* CONFIG_WPS_ER */
2033 #ifdef CONFIG_AP
2034         if (wpa_s->ap_iface)
2035                 return wpas_ap_wps_nfc_config_token(wpa_s, ndef);
2036 #endif /* CONFIG_AP */
2037         return NULL;
2038 }
2039
2040
2041 struct wpabuf * wpas_wps_nfc_token(struct wpa_supplicant *wpa_s, int ndef)
2042 {
2043         if (wpa_s->conf->wps_nfc_pw_from_config) {
2044                 return wps_nfc_token_build(ndef,
2045                                            wpa_s->conf->wps_nfc_dev_pw_id,
2046                                            wpa_s->conf->wps_nfc_dh_pubkey,
2047                                            wpa_s->conf->wps_nfc_dev_pw);
2048         }
2049
2050         return wps_nfc_token_gen(ndef, &wpa_s->conf->wps_nfc_dev_pw_id,
2051                                  &wpa_s->conf->wps_nfc_dh_pubkey,
2052                                  &wpa_s->conf->wps_nfc_dh_privkey,
2053                                  &wpa_s->conf->wps_nfc_dev_pw);
2054 }
2055
2056
2057 int wpas_wps_start_nfc(struct wpa_supplicant *wpa_s, const u8 *bssid)
2058 {
2059         struct wps_context *wps = wpa_s->wps;
2060         char pw[32 * 2 + 1];
2061
2062         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL ||
2063             wpa_s->conf->wps_nfc_dh_privkey == NULL ||
2064             wpa_s->conf->wps_nfc_dev_pw == NULL)
2065                 return -1;
2066
2067         dh5_free(wps->dh_ctx);
2068         wpabuf_free(wps->dh_pubkey);
2069         wpabuf_free(wps->dh_privkey);
2070         wps->dh_privkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
2071         wps->dh_pubkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
2072         if (wps->dh_privkey == NULL || wps->dh_pubkey == NULL) {
2073                 wps->dh_ctx = NULL;
2074                 wpabuf_free(wps->dh_pubkey);
2075                 wps->dh_pubkey = NULL;
2076                 wpabuf_free(wps->dh_privkey);
2077                 wps->dh_privkey = NULL;
2078                 return -1;
2079         }
2080         wps->dh_ctx = dh5_init_fixed(wps->dh_privkey, wps->dh_pubkey);
2081         if (wps->dh_ctx == NULL) {
2082                 wpabuf_free(wps->dh_pubkey);
2083                 wps->dh_pubkey = NULL;
2084                 wpabuf_free(wps->dh_privkey);
2085                 wps->dh_privkey = NULL;
2086                 return -1;
2087         }
2088
2089         wpa_snprintf_hex_uppercase(pw, sizeof(pw),
2090                                    wpabuf_head(wpa_s->conf->wps_nfc_dev_pw),
2091                                    wpabuf_len(wpa_s->conf->wps_nfc_dev_pw));
2092         return wpas_wps_start_pin(wpa_s, bssid, pw, 0,
2093                                   wpa_s->conf->wps_nfc_dev_pw_id);
2094 }
2095
2096
2097 static int wpas_wps_use_cred(struct wpa_supplicant *wpa_s,
2098                              struct wps_parse_attr *attr)
2099 {
2100         wpa_s->wps_ap_channel = 0;
2101
2102         /*
2103          * Disable existing networks temporarily to allow the newly learned
2104          * credential to be preferred. Enable the temporarily disabled networks
2105          * after 10 seconds.
2106          */
2107         wpas_wps_temp_disable(wpa_s, NULL);
2108         eloop_register_timeout(10, 0, wpas_wps_reenable_networks_cb, wpa_s,
2109                                NULL);
2110
2111         if (wps_oob_use_cred(wpa_s->wps, attr) < 0)
2112                 return -1;
2113
2114         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
2115                 return 0;
2116
2117         wpa_printf(MSG_DEBUG, "WPS: Request reconnection with new network "
2118                    "based on the received credential added");
2119         wpa_s->normal_scans = 0;
2120         wpa_supplicant_reinit_autoscan(wpa_s);
2121         if (wpa_s->wps_ap_channel) {
2122                 u16 chan = wpa_s->wps_ap_channel;
2123                 int freq = 0;
2124
2125                 if (chan >= 1 && chan <= 13)
2126                         freq = 2407 + 5 * chan;
2127                 else if (chan == 14)
2128                         freq = 2484;
2129                 else if (chan >= 30)
2130                         freq = 5000 + 5 * chan;
2131
2132                 if (freq) {
2133                         wpa_printf(MSG_DEBUG, "WPS: Credential indicated "
2134                                    "AP channel %u -> %u MHz", chan, freq);
2135                         wpa_s->after_wps = 5;
2136                         wpa_s->wps_freq = freq;
2137                 }
2138         }
2139         wpa_s->disconnected = 0;
2140         wpa_s->reassociate = 1;
2141         wpa_supplicant_req_scan(wpa_s, 0, 0);
2142
2143         return 0;
2144 }
2145
2146
2147 #ifdef CONFIG_WPS_ER
2148 static int wpas_wps_add_nfc_password_token(struct wpa_supplicant *wpa_s,
2149                                            struct wps_parse_attr *attr)
2150 {
2151         return wps_registrar_add_nfc_password_token(
2152                 wpa_s->wps->registrar, attr->oob_dev_password,
2153                 attr->oob_dev_password_len);
2154 }
2155 #endif /* CONFIG_WPS_ER */
2156
2157
2158 static int wpas_wps_nfc_tag_process(struct wpa_supplicant *wpa_s,
2159                                     const struct wpabuf *wps)
2160 {
2161         struct wps_parse_attr attr;
2162
2163         wpa_hexdump_buf(MSG_DEBUG, "WPS: Received NFC tag payload", wps);
2164
2165         if (wps_parse_msg(wps, &attr)) {
2166                 wpa_printf(MSG_DEBUG, "WPS: Ignore invalid data from NFC tag");
2167                 return -1;
2168         }
2169
2170         if (attr.num_cred)
2171                 return wpas_wps_use_cred(wpa_s, &attr);
2172
2173 #ifdef CONFIG_WPS_ER
2174         if (attr.oob_dev_password)
2175                 return wpas_wps_add_nfc_password_token(wpa_s, &attr);
2176 #endif /* CONFIG_WPS_ER */
2177
2178         wpa_printf(MSG_DEBUG, "WPS: Ignore unrecognized NFC tag");
2179         return -1;
2180 }
2181
2182
2183 int wpas_wps_nfc_tag_read(struct wpa_supplicant *wpa_s,
2184                           const struct wpabuf *data)
2185 {
2186         const struct wpabuf *wps = data;
2187         struct wpabuf *tmp = NULL;
2188         int ret;
2189
2190         if (wpabuf_len(data) < 4)
2191                 return -1;
2192
2193         if (*wpabuf_head_u8(data) != 0x10) {
2194                 /* Assume this contains full NDEF record */
2195                 tmp = ndef_parse_wifi(data);
2196                 if (tmp == NULL) {
2197                         wpa_printf(MSG_DEBUG, "WPS: Could not parse NDEF");
2198                         return -1;
2199                 }
2200                 wps = tmp;
2201         }
2202
2203         ret = wpas_wps_nfc_tag_process(wpa_s, wps);
2204         wpabuf_free(tmp);
2205         return ret;
2206 }
2207
2208
2209 struct wpabuf * wpas_wps_nfc_handover_req(struct wpa_supplicant *wpa_s, int cr)
2210 {
2211         if (cr)
2212                 return ndef_build_wifi_hc(1);
2213         return ndef_build_wifi_hr();
2214 }
2215
2216
2217 #ifdef CONFIG_WPS_NFC
2218 struct wpabuf * wpas_wps_er_nfc_handover_sel(struct wpa_supplicant *wpa_s,
2219                                              int ndef, const char *uuid)
2220 {
2221 #ifdef CONFIG_WPS_ER
2222         struct wpabuf *ret;
2223         u8 u[UUID_LEN], *use_uuid = NULL;
2224         u8 addr[ETH_ALEN], *use_addr = NULL;
2225
2226         if (!wpa_s->wps_er)
2227                 return NULL;
2228
2229         if (uuid == NULL)
2230                 return NULL;
2231         if (uuid_str2bin(uuid, u) == 0)
2232                 use_uuid = u;
2233         else if (hwaddr_aton(uuid, addr) == 0)
2234                 use_addr = addr;
2235         else
2236                 return NULL;
2237
2238         /*
2239          * Handover Select carrier record for WPS uses the same format as
2240          * configuration token.
2241          */
2242         ret = wps_er_nfc_config_token(wpa_s->wps_er, use_uuid, use_addr);
2243         if (ndef && ret) {
2244                 struct wpabuf *tmp;
2245                 tmp = ndef_build_wifi(ret);
2246                 wpabuf_free(ret);
2247                 if (tmp == NULL)
2248                         return NULL;
2249                 ret = tmp;
2250         }
2251
2252         return ret;
2253 #else /* CONFIG_WPS_ER */
2254         return NULL;
2255 #endif /* CONFIG_WPS_ER */
2256 }
2257 #endif /* CONFIG_WPS_NFC */
2258
2259
2260 struct wpabuf * wpas_wps_nfc_handover_sel(struct wpa_supplicant *wpa_s,
2261                                           int ndef, int cr, const char *uuid)
2262 {
2263         struct wpabuf *ret;
2264         if (!cr)
2265                 return NULL;
2266         ret = wpas_ap_wps_nfc_handover_sel(wpa_s, ndef);
2267         if (ret)
2268                 return ret;
2269         return wpas_wps_er_nfc_handover_sel(wpa_s, ndef, uuid);
2270 }
2271
2272
2273 int wpas_wps_nfc_rx_handover_req(struct wpa_supplicant *wpa_s,
2274                                  const struct wpabuf *data)
2275 {
2276         /* TODO */
2277         return -1;
2278 }
2279
2280
2281 int wpas_wps_nfc_rx_handover_sel(struct wpa_supplicant *wpa_s,
2282                                  const struct wpabuf *data)
2283 {
2284         struct wpabuf *wps;
2285         int ret;
2286
2287         wps = ndef_parse_wifi(data);
2288         if (wps == NULL)
2289                 return -1;
2290         wpa_printf(MSG_DEBUG, "WPS: Received application/vnd.wfa.wsc "
2291                    "payload from NFC connection handover");
2292         wpa_hexdump_buf_key(MSG_DEBUG, "WPS: NFC payload", wps);
2293         ret = wpas_wps_nfc_tag_process(wpa_s, wps);
2294         wpabuf_free(wps);
2295
2296         return ret;
2297 }
2298
2299
2300 int wpas_wps_nfc_report_handover(struct wpa_supplicant *wpa_s,
2301                                  const struct wpabuf *req,
2302                                  const struct wpabuf *sel)
2303 {
2304         wpa_printf(MSG_DEBUG, "NFC: WPS connection handover reported");
2305         wpa_hexdump_buf_key(MSG_DEBUG, "WPS: Carrier record in request", req);
2306         wpa_hexdump_buf_key(MSG_DEBUG, "WPS: Carrier record in select", sel);
2307         return wpas_wps_nfc_rx_handover_sel(wpa_s, sel);
2308 }
2309
2310 #endif /* CONFIG_WPS_NFC */
2311
2312
2313 extern int wpa_debug_level;
2314
2315 static void wpas_wps_dump_ap_info(struct wpa_supplicant *wpa_s)
2316 {
2317         size_t i;
2318         struct os_time now;
2319
2320         if (wpa_debug_level > MSG_DEBUG)
2321                 return;
2322
2323         if (wpa_s->wps_ap == NULL)
2324                 return;
2325
2326         os_get_time(&now);
2327
2328         for (i = 0; i < wpa_s->num_wps_ap; i++) {
2329                 struct wps_ap_info *ap = &wpa_s->wps_ap[i];
2330                 struct wpa_blacklist *e = wpa_blacklist_get(wpa_s, ap->bssid);
2331
2332                 wpa_printf(MSG_DEBUG, "WPS: AP[%d] " MACSTR " type=%d "
2333                            "tries=%d last_attempt=%d sec ago blacklist=%d",
2334                            (int) i, MAC2STR(ap->bssid), ap->type, ap->tries,
2335                            ap->last_attempt.sec > 0 ?
2336                            (int) now.sec - (int) ap->last_attempt.sec : -1,
2337                            e ? e->count : 0);
2338         }
2339 }
2340
2341
2342 static struct wps_ap_info * wpas_wps_get_ap_info(struct wpa_supplicant *wpa_s,
2343                                                  const u8 *bssid)
2344 {
2345         size_t i;
2346
2347         if (wpa_s->wps_ap == NULL)
2348                 return NULL;
2349
2350         for (i = 0; i < wpa_s->num_wps_ap; i++) {
2351                 struct wps_ap_info *ap = &wpa_s->wps_ap[i];
2352                 if (os_memcmp(ap->bssid, bssid, ETH_ALEN) == 0)
2353                         return ap;
2354         }
2355
2356         return NULL;
2357 }
2358
2359
2360 static void wpas_wps_update_ap_info_bss(struct wpa_supplicant *wpa_s,
2361                                         struct wpa_scan_res *res)
2362 {
2363         struct wpabuf *wps;
2364         enum wps_ap_info_type type;
2365         struct wps_ap_info *ap;
2366         int r;
2367
2368         if (wpa_scan_get_vendor_ie(res, WPS_IE_VENDOR_TYPE) == NULL)
2369                 return;
2370
2371         wps = wpa_scan_get_vendor_ie_multi(res, WPS_IE_VENDOR_TYPE);
2372         if (wps == NULL)
2373                 return;
2374
2375         r = wps_is_addr_authorized(wps, wpa_s->own_addr, 1);
2376         if (r == 2)
2377                 type = WPS_AP_SEL_REG_OUR;
2378         else if (r == 1)
2379                 type = WPS_AP_SEL_REG;
2380         else
2381                 type = WPS_AP_NOT_SEL_REG;
2382
2383         wpabuf_free(wps);
2384
2385         ap = wpas_wps_get_ap_info(wpa_s, res->bssid);
2386         if (ap) {
2387                 if (ap->type != type) {
2388                         wpa_printf(MSG_DEBUG, "WPS: AP " MACSTR
2389                                    " changed type %d -> %d",
2390                                    MAC2STR(res->bssid), ap->type, type);
2391                         ap->type = type;
2392                         if (type != WPS_AP_NOT_SEL_REG)
2393                                 wpa_blacklist_del(wpa_s, ap->bssid);
2394                 }
2395                 return;
2396         }
2397
2398         ap = os_realloc_array(wpa_s->wps_ap, wpa_s->num_wps_ap + 1,
2399                               sizeof(struct wps_ap_info));
2400         if (ap == NULL)
2401                 return;
2402
2403         wpa_s->wps_ap = ap;
2404         ap = &wpa_s->wps_ap[wpa_s->num_wps_ap];
2405         wpa_s->num_wps_ap++;
2406
2407         os_memset(ap, 0, sizeof(*ap));
2408         os_memcpy(ap->bssid, res->bssid, ETH_ALEN);
2409         ap->type = type;
2410         wpa_printf(MSG_DEBUG, "WPS: AP " MACSTR " type %d added",
2411                    MAC2STR(ap->bssid), ap->type);
2412 }
2413
2414
2415 void wpas_wps_update_ap_info(struct wpa_supplicant *wpa_s,
2416                              struct wpa_scan_results *scan_res)
2417 {
2418         size_t i;
2419
2420         for (i = 0; i < scan_res->num; i++)
2421                 wpas_wps_update_ap_info_bss(wpa_s, scan_res->res[i]);
2422
2423         wpas_wps_dump_ap_info(wpa_s);
2424 }
2425
2426
2427 void wpas_wps_notify_assoc(struct wpa_supplicant *wpa_s, const u8 *bssid)
2428 {
2429         struct wps_ap_info *ap;
2430         if (!wpa_s->wps_ap_iter)
2431                 return;
2432         ap = wpas_wps_get_ap_info(wpa_s, bssid);
2433         if (ap == NULL)
2434                 return;
2435         ap->tries++;
2436         os_get_time(&ap->last_attempt);
2437 }