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