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