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 wpas_wps_clear_timeout(void *eloop_ctx, void *timeout_ctx)
 571 {
 572         struct wpa_supplicant *wpa_s = eloop_ctx;
 573         wpa_printf(MSG_DEBUG, "WPS: Clear WPS network from timeout");
 574         wpas_clear_wps(wpa_s);
 575 }
 576
 577
 578 static void wpa_supplicant_wps_event_fail(struct wpa_supplicant *wpa_s,
 579                                           struct wps_event_fail *fail)
 580 {
 581         if (fail->error_indication > 0 &&
 582             fail->error_indication < NUM_WPS_EI_VALUES) {
 583                 wpa_msg(wpa_s, MSG_INFO,
 584                         WPS_EVENT_FAIL "msg=%d config_error=%d reason=%d (%s)",
 585                         fail->msg, fail->config_error, fail->error_indication,
 586                         wps_ei_str(fail->error_indication));
 587                 if (wpa_s->parent && wpa_s->parent != wpa_s)
 588                         wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_FAIL
 589                                 "msg=%d config_error=%d reason=%d (%s)",
 590                                 fail->msg, fail->config_error,
 591                                 fail->error_indication,
 592                                 wps_ei_str(fail->error_indication));
 593         } else {
 594                 wpa_msg(wpa_s, MSG_INFO,
 595                         WPS_EVENT_FAIL "msg=%d config_error=%d",
 596                         fail->msg, fail->config_error);
 597                 if (wpa_s->parent && wpa_s->parent != wpa_s)
 598                         wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_FAIL
 599                                 "msg=%d config_error=%d",
 600                                 fail->msg, fail->config_error);
 601         }
 602
 603         /*
 604          * Need to allow WPS processing to complete, e.g., by sending WSC_NACK.
 605          */
 606         wpa_printf(MSG_DEBUG, "WPS: Register timeout to clear WPS network");
 607         eloop_cancel_timeout(wpas_wps_clear_timeout, wpa_s, NULL);
 608         eloop_register_timeout(0, 100000, wpas_wps_clear_timeout, wpa_s, NULL);
 609
 610         wpas_notify_wps_event_fail(wpa_s, fail);
 611 #ifdef CONFIG_P2P
 612         wpas_p2p_wps_failed(wpa_s, fail);
 613 #endif /* CONFIG_P2P */
 614 }
 615
 616
 617 static void wpas_wps_reenable_networks_cb(void *eloop_ctx, void *timeout_ctx);
 618
 619 static void wpas_wps_reenable_networks(struct wpa_supplicant *wpa_s)
 620 {
 621         struct wpa_ssid *ssid;
 622         int changed = 0;
 623
 624         eloop_cancel_timeout(wpas_wps_reenable_networks_cb, wpa_s, NULL);
 625
 626         for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
 627                 if (ssid->disabled_for_connect && ssid->disabled) {
 628                         ssid->disabled_for_connect = 0;
 629                         ssid->disabled = 0;
 630                         wpas_notify_network_enabled_changed(wpa_s, ssid);
 631                         changed++;
 632                 }
 633         }
 634
 635         if (changed) {
 636 #ifndef CONFIG_NO_CONFIG_WRITE
 637                 if (wpa_s->conf->update_config &&
 638                     wpa_config_write(wpa_s->confname, wpa_s->conf)) {
 639                         wpa_printf(MSG_DEBUG, "WPS: Failed to update "
 640                                    "configuration");
 641                 }
 642 #endif /* CONFIG_NO_CONFIG_WRITE */
 643         }
 644 }
 645
 646
 647 static void wpas_wps_reenable_networks_cb(void *eloop_ctx, void *timeout_ctx)
 648 {
 649         struct wpa_supplicant *wpa_s = eloop_ctx;
 650         /* Enable the networks disabled during wpas_wps_reassoc */
 651         wpas_wps_reenable_networks(wpa_s);
 652 }
 653
 654
 655 static void wpa_supplicant_wps_event_success(struct wpa_supplicant *wpa_s)
 656 {
 657         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_SUCCESS);
 658         wpa_s->wps_success = 1;
 659         wpas_notify_wps_event_success(wpa_s);
 660         if (wpa_s->current_ssid)
 661                 wpas_clear_temp_disabled(wpa_s, wpa_s->current_ssid, 1);
 662         wpa_s->extra_blacklist_count = 0;
 663
 664         /*
 665          * Enable the networks disabled during wpas_wps_reassoc after 10
 666          * seconds. The 10 seconds timer is to allow the data connection to be
 667          * formed before allowing other networks to be selected.
 668          */
 669         eloop_register_timeout(10, 0, wpas_wps_reenable_networks_cb, wpa_s,
 670                                NULL);
 671
 672 #ifdef CONFIG_P2P
 673         wpas_p2p_wps_success(wpa_s, wpa_s->bssid, 0);
 674 #endif /* CONFIG_P2P */
 675 }
 676
 677
 678 static void wpa_supplicant_wps_event_er_ap_add(struct wpa_supplicant *wpa_s,
 679                                                struct wps_event_er_ap *ap)
 680 {
 681         char uuid_str[100];
 682         char dev_type[WPS_DEV_TYPE_BUFSIZE];
 683
 684         uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str));
 685         if (ap->pri_dev_type)
 686                 wps_dev_type_bin2str(ap->pri_dev_type, dev_type,
 687                                      sizeof(dev_type));
 688         else
 689                 dev_type[0] = '\0';
 690
 691         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_ADD "%s " MACSTR
 692                 " pri_dev_type=%s wps_state=%d |%s|%s|%s|%s|%s|%s|",
 693                 uuid_str, MAC2STR(ap->mac_addr), dev_type, ap->wps_state,
 694                 ap->friendly_name ? ap->friendly_name : "",
 695                 ap->manufacturer ? ap->manufacturer : "",
 696                 ap->model_description ? ap->model_description : "",
 697                 ap->model_name ? ap->model_name : "",
 698                 ap->manufacturer_url ? ap->manufacturer_url : "",
 699                 ap->model_url ? ap->model_url : "");
 700 }
 701
 702
 703 static void wpa_supplicant_wps_event_er_ap_remove(struct wpa_supplicant *wpa_s,
 704                                                   struct wps_event_er_ap *ap)
 705 {
 706         char uuid_str[100];
 707         uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str));
 708         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_REMOVE "%s", uuid_str);
 709 }
 710
 711
 712 static void wpa_supplicant_wps_event_er_enrollee_add(
 713         struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee)
 714 {
 715         char uuid_str[100];
 716         char dev_type[WPS_DEV_TYPE_BUFSIZE];
 717
 718         uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str));
 719         if (enrollee->pri_dev_type)
 720                 wps_dev_type_bin2str(enrollee->pri_dev_type, dev_type,
 721                                      sizeof(dev_type));
 722         else
 723                 dev_type[0] = '\0';
 724
 725         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_ADD "%s " MACSTR
 726                 " M1=%d config_methods=0x%x dev_passwd_id=%d pri_dev_type=%s "
 727                 "|%s|%s|%s|%s|%s|",
 728                 uuid_str, MAC2STR(enrollee->mac_addr), enrollee->m1_received,
 729                 enrollee->config_methods, enrollee->dev_passwd_id, dev_type,
 730                 enrollee->dev_name ? enrollee->dev_name : "",
 731                 enrollee->manufacturer ? enrollee->manufacturer : "",
 732                 enrollee->model_name ? enrollee->model_name : "",
 733                 enrollee->model_number ? enrollee->model_number : "",
 734                 enrollee->serial_number ? enrollee->serial_number : "");
 735 }
 736
 737
 738 static void wpa_supplicant_wps_event_er_enrollee_remove(
 739         struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee)
 740 {
 741         char uuid_str[100];
 742         uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str));
 743         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_REMOVE "%s " MACSTR,
 744                 uuid_str, MAC2STR(enrollee->mac_addr));
 745 }
 746
 747
 748 static void wpa_supplicant_wps_event_er_ap_settings(
 749         struct wpa_supplicant *wpa_s,
 750         struct wps_event_er_ap_settings *ap_settings)
 751 {
 752         char uuid_str[100];
 753         char key_str[65];
 754         const struct wps_credential *cred = ap_settings->cred;
 755
 756         key_str[0] = '\0';
 757         if (cred->auth_type & (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) {
 758                 if (cred->key_len >= 8 && cred->key_len <= 64) {
 759                         os_memcpy(key_str, cred->key, cred->key_len);
 760                         key_str[cred->key_len] = '\0';
 761                 }
 762         }
 763
 764         uuid_bin2str(ap_settings->uuid, uuid_str, sizeof(uuid_str));
 765         /* Use wpa_msg_ctrl to avoid showing the key in debug log */
 766         wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_SETTINGS
 767                      "uuid=%s ssid=%s auth_type=0x%04x encr_type=0x%04x "
 768                      "key=%s",
 769                      uuid_str, wpa_ssid_txt(cred->ssid, cred->ssid_len),
 770                      cred->auth_type, cred->encr_type, key_str);
 771 }
 772
 773
 774 static void wpa_supplicant_wps_event_er_set_sel_reg(
 775         struct wpa_supplicant *wpa_s,
 776         struct wps_event_er_set_selected_registrar *ev)
 777 {
 778         char uuid_str[100];
 779
 780         uuid_bin2str(ev->uuid, uuid_str, sizeof(uuid_str));
 781         switch (ev->state) {
 782         case WPS_ER_SET_SEL_REG_START:
 783                 wpa_msg(wpa_s, MSG_DEBUG, WPS_EVENT_ER_SET_SEL_REG
 784                         "uuid=%s state=START sel_reg=%d dev_passwd_id=%u "
 785                         "sel_reg_config_methods=0x%x",
 786                         uuid_str, ev->sel_reg, ev->dev_passwd_id,
 787                         ev->sel_reg_config_methods);
 788                 break;
 789         case WPS_ER_SET_SEL_REG_DONE:
 790                 wpa_msg(wpa_s, MSG_DEBUG, WPS_EVENT_ER_SET_SEL_REG
 791                         "uuid=%s state=DONE", uuid_str);
 792                 break;
 793         case WPS_ER_SET_SEL_REG_FAILED:
 794                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_SET_SEL_REG
 795                         "uuid=%s state=FAILED", uuid_str);
 796                 break;
 797         }
 798 }
 799
 800
 801 static void wpa_supplicant_wps_event(void *ctx, enum wps_event event,
 802                                      union wps_event_data *data)
 803 {
 804         struct wpa_supplicant *wpa_s = ctx;
 805         switch (event) {
 806         case WPS_EV_M2D:
 807                 wpa_supplicant_wps_event_m2d(wpa_s, &data->m2d);
 808                 break;
 809         case WPS_EV_FAIL:
 810                 wpa_supplicant_wps_event_fail(wpa_s, &data->fail);
 811                 break;
 812         case WPS_EV_SUCCESS:
 813                 wpa_supplicant_wps_event_success(wpa_s);
 814                 break;
 815         case WPS_EV_PWD_AUTH_FAIL:
 816 #ifdef CONFIG_AP
 817                 if (wpa_s->ap_iface && data->pwd_auth_fail.enrollee)
 818                         wpa_supplicant_ap_pwd_auth_fail(wpa_s);
 819 #endif /* CONFIG_AP */
 820                 break;
 821         case WPS_EV_PBC_OVERLAP:
 822                 break;
 823         case WPS_EV_PBC_TIMEOUT:
 824                 break;
 825         case WPS_EV_PBC_ACTIVE:
 826                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ACTIVE);
 827                 break;
 828         case WPS_EV_PBC_DISABLE:
 829                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_DISABLE);
 830                 break;
 831         case WPS_EV_ER_AP_ADD:
 832                 wpa_supplicant_wps_event_er_ap_add(wpa_s, &data->ap);
 833                 break;
 834         case WPS_EV_ER_AP_REMOVE:
 835                 wpa_supplicant_wps_event_er_ap_remove(wpa_s, &data->ap);
 836                 break;
 837         case WPS_EV_ER_ENROLLEE_ADD:
 838                 wpa_supplicant_wps_event_er_enrollee_add(wpa_s,
 839                                                          &data->enrollee);
 840                 break;
 841         case WPS_EV_ER_ENROLLEE_REMOVE:
 842                 wpa_supplicant_wps_event_er_enrollee_remove(wpa_s,
 843                                                             &data->enrollee);
 844                 break;
 845         case WPS_EV_ER_AP_SETTINGS:
 846                 wpa_supplicant_wps_event_er_ap_settings(wpa_s,
 847                                                         &data->ap_settings);
 848                 break;
 849         case WPS_EV_ER_SET_SELECTED_REGISTRAR:
 850                 wpa_supplicant_wps_event_er_set_sel_reg(wpa_s,
 851                                                         &data->set_sel_reg);
 852                 break;
 853         case WPS_EV_AP_PIN_SUCCESS:
 854                 break;
 855         }
 856 }
 857
 858
 859 enum wps_request_type wpas_wps_get_req_type(struct wpa_ssid *ssid)
 860 {
 861         if (eap_is_wps_pbc_enrollee(&ssid->eap) ||
 862             eap_is_wps_pin_enrollee(&ssid->eap))
 863                 return WPS_REQ_ENROLLEE;
 864         else
 865                 return WPS_REQ_REGISTRAR;
 866 }
 867
 868
 869 static void wpas_clear_wps(struct wpa_supplicant *wpa_s)
 870 {
 871         int id;
 872         struct wpa_ssid *ssid, *remove_ssid = NULL, *prev_current;
 873
 874         prev_current = wpa_s->current_ssid;
 875
 876         /* Enable the networks disabled during wpas_wps_reassoc */
 877         wpas_wps_reenable_networks(wpa_s);
 878
 879         eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
 880
 881         /* Remove any existing WPS network from configuration */
 882         ssid = wpa_s->conf->ssid;
 883         while (ssid) {
 884                 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
 885                         if (ssid == wpa_s->current_ssid) {
 886                                 wpa_supplicant_deauthenticate(
 887                                         wpa_s, WLAN_REASON_DEAUTH_LEAVING);
 888                         }
 889                         id = ssid->id;
 890                         remove_ssid = ssid;
 891                 } else
 892                         id = -1;
 893                 ssid = ssid->next;
 894                 if (id >= 0) {
 895                         if (prev_current == remove_ssid) {
 896                                 wpa_sm_set_config(wpa_s->wpa, NULL);
 897                                 eapol_sm_notify_config(wpa_s->eapol, NULL,
 898                                                        NULL);
 899                         }
 900                         wpas_notify_network_removed(wpa_s, remove_ssid);
 901                         wpa_config_remove_network(wpa_s->conf, id);
 902                 }
 903         }
 904
 905         wpas_wps_clear_ap_info(wpa_s);
 906 }
 907
 908
 909 static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx)
 910 {
 911         struct wpa_supplicant *wpa_s = eloop_ctx;
 912         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_TIMEOUT "Requested operation timed "
 913                 "out");
 914         wpas_clear_wps(wpa_s);
 915 }
 916
 917
 918 static struct wpa_ssid * wpas_wps_add_network(struct wpa_supplicant *wpa_s,
 919                                               int registrar, const u8 *bssid)
 920 {
 921         struct wpa_ssid *ssid;
 922
 923         ssid = wpa_config_add_network(wpa_s->conf);
 924         if (ssid == NULL)
 925                 return NULL;
 926         wpas_notify_network_added(wpa_s, ssid);
 927         wpa_config_set_network_defaults(ssid);
 928         ssid->temporary = 1;
 929         if (wpa_config_set(ssid, "key_mgmt", "WPS", 0) < 0 ||
 930             wpa_config_set(ssid, "eap", "WSC", 0) < 0 ||
 931             wpa_config_set(ssid, "identity", registrar ?
 932                            "\"" WSC_ID_REGISTRAR "\"" :
 933                            "\"" WSC_ID_ENROLLEE "\"", 0) < 0) {
 934                 wpas_notify_network_removed(wpa_s, ssid);
 935                 wpa_config_remove_network(wpa_s->conf, ssid->id);
 936                 return NULL;
 937         }
 938
 939         if (bssid) {
 940 #ifndef CONFIG_P2P
 941                 struct wpa_bss *bss;
 942                 int count = 0;
 943 #endif /* CONFIG_P2P */
 944
 945                 os_memcpy(ssid->bssid, bssid, ETH_ALEN);
 946                 ssid->bssid_set = 1;
 947
 948                 /*
 949                  * Note: With P2P, the SSID may change at the time the WPS
 950                  * provisioning is started, so better not filter the AP based
 951                  * on the current SSID in the scan results.
 952                  */
 953 #ifndef CONFIG_P2P
 954                 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
 955                         if (os_memcmp(bssid, bss->bssid, ETH_ALEN) != 0)
 956                                 continue;
 957
 958                         os_free(ssid->ssid);
 959                         ssid->ssid = os_malloc(bss->ssid_len);
 960                         if (ssid->ssid == NULL)
 961                                 break;
 962                         os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
 963                         ssid->ssid_len = bss->ssid_len;
 964                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Picked SSID from "
 965                                           "scan results",
 966                                           ssid->ssid, ssid->ssid_len);
 967                         count++;
 968                 }
 969
 970                 if (count > 1) {
 971                         wpa_printf(MSG_DEBUG, "WPS: More than one SSID found "
 972                                    "for the AP; use wildcard");
 973                         os_free(ssid->ssid);
 974                         ssid->ssid = NULL;
 975                         ssid->ssid_len = 0;
 976                 }
 977 #endif /* CONFIG_P2P */
 978         }
 979
 980         return ssid;
 981 }
 982
 983
 984 static void wpas_wps_temp_disable(struct wpa_supplicant *wpa_s,
 985                                   struct wpa_ssid *selected)
 986 {
 987         struct wpa_ssid *ssid;
 988
 989         if (wpa_s->current_ssid)
 990                 wpa_supplicant_deauthenticate(
 991                         wpa_s, WLAN_REASON_DEAUTH_LEAVING);
 992
 993         /* Mark all other networks disabled and trigger reassociation */
 994         ssid = wpa_s->conf->ssid;
 995         while (ssid) {
 996                 int was_disabled = ssid->disabled;
 997                 ssid->disabled_for_connect = 0;
 998                 /*
 999                  * In case the network object corresponds to a persistent group
1000                  * then do not send out network disabled signal. In addition,
1001                  * do not change disabled status of persistent network objects
1002                  * from 2 to 1 should we connect to another network.
1003                  */
1004                 if (was_disabled != 2) {
1005                         ssid->disabled = ssid != selected;
1006                         if (was_disabled != ssid->disabled) {
1007                                 if (ssid->disabled)
1008                                         ssid->disabled_for_connect = 1;
1009                                 wpas_notify_network_enabled_changed(wpa_s,
1010                                                                     ssid);
1011                         }
1012                 }
1013                 ssid = ssid->next;
1014         }
1015 }
1016
1017
1018 static void wpas_wps_reassoc(struct wpa_supplicant *wpa_s,
1019                              struct wpa_ssid *selected, const u8 *bssid)
1020 {
1021         struct wpa_bss *bss;
1022
1023         wpa_s->after_wps = 0;
1024         wpa_s->known_wps_freq = 0;
1025         if (bssid) {
1026                 bss = wpa_bss_get_bssid_latest(wpa_s, bssid);
1027                 if (bss && bss->freq > 0) {
1028                         wpa_s->known_wps_freq = 1;
1029                         wpa_s->wps_freq = bss->freq;
1030                 }
1031         }
1032
1033         wpas_wps_temp_disable(wpa_s, selected);
1034
1035         wpa_s->disconnected = 0;
1036         wpa_s->reassociate = 1;
1037         wpa_s->scan_runs = 0;
1038         wpa_s->normal_scans = 0;
1039         wpa_s->wps_success = 0;
1040         wpa_s->blacklist_cleared = 0;
1041         wpa_supplicant_req_scan(wpa_s, 0, 0);
1042 }
1043
1044
1045 int wpas_wps_start_pbc(struct wpa_supplicant *wpa_s, const u8 *bssid,
1046                        int p2p_group)
1047 {
1048         struct wpa_ssid *ssid;
1049         wpas_clear_wps(wpa_s);
1050         ssid = wpas_wps_add_network(wpa_s, 0, bssid);
1051         if (ssid == NULL)
1052                 return -1;
1053         ssid->temporary = 1;
1054         ssid->p2p_group = p2p_group;
1055 #ifdef CONFIG_P2P
1056         if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) {
1057                 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1);
1058                 if (ssid->ssid) {
1059                         ssid->ssid_len = wpa_s->go_params->ssid_len;
1060                         os_memcpy(ssid->ssid, wpa_s->go_params->ssid,
1061                                   ssid->ssid_len);
1062                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP "
1063                                           "SSID", ssid->ssid, ssid->ssid_len);
1064                 }
1065         }
1066 #endif /* CONFIG_P2P */
1067         if (wpa_config_set(ssid, "phase1", "\"pbc=1\"", 0) < 0)
1068                 return -1;
1069         if (wpa_s->wps_fragment_size)
1070                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
1071         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
1072                                wpa_s, NULL);
1073         wpas_wps_reassoc(wpa_s, ssid, bssid);
1074         return 0;
1075 }
1076
1077
1078 int wpas_wps_start_pin(struct wpa_supplicant *wpa_s, const u8 *bssid,
1079                        const char *pin, int p2p_group, u16 dev_pw_id)
1080 {
1081         struct wpa_ssid *ssid;
1082         char val[128];
1083         unsigned int rpin = 0;
1084
1085         wpas_clear_wps(wpa_s);
1086         ssid = wpas_wps_add_network(wpa_s, 0, bssid);
1087         if (ssid == NULL)
1088                 return -1;
1089         ssid->temporary = 1;
1090         ssid->p2p_group = p2p_group;
1091 #ifdef CONFIG_P2P
1092         if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) {
1093                 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1);
1094                 if (ssid->ssid) {
1095                         ssid->ssid_len = wpa_s->go_params->ssid_len;
1096                         os_memcpy(ssid->ssid, wpa_s->go_params->ssid,
1097                                   ssid->ssid_len);
1098                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP "
1099                                           "SSID", ssid->ssid, ssid->ssid_len);
1100                 }
1101         }
1102 #endif /* CONFIG_P2P */
1103         if (pin)
1104                 os_snprintf(val, sizeof(val), "\"pin=%s dev_pw_id=%u\"",
1105                             pin, dev_pw_id);
1106         else {
1107                 rpin = wps_generate_pin();
1108                 os_snprintf(val, sizeof(val), "\"pin=%08d dev_pw_id=%u\"",
1109                             rpin, dev_pw_id);
1110         }
1111         if (wpa_config_set(ssid, "phase1", val, 0) < 0)
1112                 return -1;
1113         if (wpa_s->wps_fragment_size)
1114                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
1115         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
1116                                wpa_s, NULL);
1117         wpa_s->wps_ap_iter = 1;
1118         wpas_wps_reassoc(wpa_s, ssid, bssid);
1119         return rpin;
1120 }
1121
1122
1123 /* Cancel the wps pbc/pin requests */
1124 int wpas_wps_cancel(struct wpa_supplicant *wpa_s)
1125 {
1126 #ifdef CONFIG_AP
1127         if (wpa_s->ap_iface) {
1128                 wpa_printf(MSG_DEBUG, "WPS: Cancelling in AP mode");
1129                 return wpa_supplicant_ap_wps_cancel(wpa_s);
1130         }
1131 #endif /* CONFIG_AP */
1132
1133         if (wpa_s->wpa_state == WPA_SCANNING ||
1134             wpa_s->wpa_state == WPA_DISCONNECTED) {
1135                 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - cancel scan");
1136                 wpa_supplicant_cancel_scan(wpa_s);
1137                 wpas_clear_wps(wpa_s);
1138         } else if (wpa_s->wpa_state >= WPA_ASSOCIATED) {
1139                 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - "
1140                            "deauthenticate");
1141                 wpa_supplicant_deauthenticate(wpa_s,
1142                                               WLAN_REASON_DEAUTH_LEAVING);
1143                 wpas_clear_wps(wpa_s);
1144         } else {
1145                 wpas_wps_reenable_networks(wpa_s);
1146                 wpas_wps_clear_ap_info(wpa_s);
1147         }
1148
1149         return 0;
1150 }
1151
1152
1153 int wpas_wps_start_reg(struct wpa_supplicant *wpa_s, const u8 *bssid,
1154                        const char *pin, struct wps_new_ap_settings *settings)
1155 {
1156         struct wpa_ssid *ssid;
1157         char val[200];
1158         char *pos, *end;
1159         int res;
1160
1161         if (!pin)
1162                 return -1;
1163         wpas_clear_wps(wpa_s);
1164         ssid = wpas_wps_add_network(wpa_s, 1, bssid);
1165         if (ssid == NULL)
1166                 return -1;
1167         ssid->temporary = 1;
1168         pos = val;
1169         end = pos + sizeof(val);
1170         res = os_snprintf(pos, end - pos, "\"pin=%s", pin);
1171         if (res < 0 || res >= end - pos)
1172                 return -1;
1173         pos += res;
1174         if (settings) {
1175                 res = os_snprintf(pos, end - pos, " new_ssid=%s new_auth=%s "
1176                                   "new_encr=%s new_key=%s",
1177                                   settings->ssid_hex, settings->auth,
1178                                   settings->encr, settings->key_hex);
1179                 if (res < 0 || res >= end - pos)
1180                         return -1;
1181                 pos += res;
1182         }
1183         res = os_snprintf(pos, end - pos, "\"");
1184         if (res < 0 || res >= end - pos)
1185                 return -1;
1186         if (wpa_config_set(ssid, "phase1", val, 0) < 0)
1187                 return -1;
1188         if (wpa_s->wps_fragment_size)
1189                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
1190         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
1191                                wpa_s, NULL);
1192         wpas_wps_reassoc(wpa_s, ssid, bssid);
1193         return 0;
1194 }
1195
1196
1197 static int wpas_wps_new_psk_cb(void *ctx, const u8 *mac_addr, const u8 *psk,
1198                                size_t psk_len)
1199 {
1200         wpa_printf(MSG_DEBUG, "WPS: Received new WPA/WPA2-PSK from WPS for "
1201                    "STA " MACSTR, MAC2STR(mac_addr));
1202         wpa_hexdump_key(MSG_DEBUG, "Per-device PSK", psk, psk_len);
1203
1204         /* TODO */
1205
1206         return 0;
1207 }
1208
1209
1210 static void wpas_wps_pin_needed_cb(void *ctx, const u8 *uuid_e,
1211                                    const struct wps_device_data *dev)
1212 {
1213         char uuid[40], txt[400];
1214         int len;
1215         char devtype[WPS_DEV_TYPE_BUFSIZE];
1216         if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
1217                 return;
1218         wpa_printf(MSG_DEBUG, "WPS: PIN needed for UUID-E %s", uuid);
1219         len = os_snprintf(txt, sizeof(txt), "WPS-EVENT-PIN-NEEDED %s " MACSTR
1220                           " [%s|%s|%s|%s|%s|%s]",
1221                           uuid, MAC2STR(dev->mac_addr), dev->device_name,
1222                           dev->manufacturer, dev->model_name,
1223                           dev->model_number, dev->serial_number,
1224                           wps_dev_type_bin2str(dev->pri_dev_type, devtype,
1225                                                sizeof(devtype)));
1226         if (len > 0 && len < (int) sizeof(txt))
1227                 wpa_printf(MSG_INFO, "%s", txt);
1228 }
1229
1230
1231 static void wpas_wps_set_sel_reg_cb(void *ctx, int sel_reg, u16 dev_passwd_id,
1232                                     u16 sel_reg_config_methods)
1233 {
1234 #ifdef CONFIG_WPS_ER
1235         struct wpa_supplicant *wpa_s = ctx;
1236
1237         if (wpa_s->wps_er == NULL)
1238                 return;
1239         wpa_printf(MSG_DEBUG, "WPS ER: SetSelectedRegistrar - sel_reg=%d "
1240                    "dev_password_id=%u sel_reg_config_methods=0x%x",
1241                    sel_reg, dev_passwd_id, sel_reg_config_methods);
1242         wps_er_set_sel_reg(wpa_s->wps_er, sel_reg, dev_passwd_id,
1243                            sel_reg_config_methods);
1244 #endif /* CONFIG_WPS_ER */
1245 }
1246
1247
1248 static u16 wps_fix_config_methods(u16 config_methods)
1249 {
1250 #ifdef CONFIG_WPS2
1251         if ((config_methods &
1252              (WPS_CONFIG_DISPLAY | WPS_CONFIG_VIRT_DISPLAY |
1253               WPS_CONFIG_PHY_DISPLAY)) == WPS_CONFIG_DISPLAY) {
1254                 wpa_printf(MSG_INFO, "WPS: Converting display to "
1255                            "virtual_display for WPS 2.0 compliance");
1256                 config_methods |= WPS_CONFIG_VIRT_DISPLAY;
1257         }
1258         if ((config_methods &
1259              (WPS_CONFIG_PUSHBUTTON | WPS_CONFIG_VIRT_PUSHBUTTON |
1260               WPS_CONFIG_PHY_PUSHBUTTON)) == WPS_CONFIG_PUSHBUTTON) {
1261                 wpa_printf(MSG_INFO, "WPS: Converting push_button to "
1262                            "virtual_push_button for WPS 2.0 compliance");
1263                 config_methods |= WPS_CONFIG_VIRT_PUSHBUTTON;
1264         }
1265 #endif /* CONFIG_WPS2 */
1266
1267         return config_methods;
1268 }
1269
1270
1271 static void wpas_wps_set_uuid(struct wpa_supplicant *wpa_s,
1272                               struct wps_context *wps)
1273 {
1274         wpa_printf(MSG_DEBUG, "WPS: Set UUID for interface %s", wpa_s->ifname);
1275         if (is_nil_uuid(wpa_s->conf->uuid)) {
1276                 struct wpa_supplicant *first;
1277                 first = wpa_s->global->ifaces;
1278                 while (first && first->next)
1279                         first = first->next;
1280                 if (first && first != wpa_s) {
1281                         if (wps != wpa_s->global->ifaces->wps)
1282                                 os_memcpy(wps->uuid,
1283                                           wpa_s->global->ifaces->wps->uuid,
1284                                           WPS_UUID_LEN);
1285                         wpa_hexdump(MSG_DEBUG, "WPS: UUID from the first "
1286                                     "interface", wps->uuid, WPS_UUID_LEN);
1287                 } else {
1288                         uuid_gen_mac_addr(wpa_s->own_addr, wps->uuid);
1289                         wpa_hexdump(MSG_DEBUG, "WPS: UUID based on MAC "
1290                                     "address", wps->uuid, WPS_UUID_LEN);
1291                 }
1292         } else {
1293                 os_memcpy(wps->uuid, wpa_s->conf->uuid, WPS_UUID_LEN);
1294                 wpa_hexdump(MSG_DEBUG, "WPS: UUID based on configuration",
1295                             wps->uuid, WPS_UUID_LEN);
1296         }
1297 }
1298
1299
1300 static void wpas_wps_set_vendor_ext_m1(struct wpa_supplicant *wpa_s,
1301                                        struct wps_context *wps)
1302 {
1303         wpabuf_free(wps->dev.vendor_ext_m1);
1304         wps->dev.vendor_ext_m1 = NULL;
1305
1306         if (wpa_s->conf->wps_vendor_ext_m1) {
1307                 wps->dev.vendor_ext_m1 =
1308                         wpabuf_dup(wpa_s->conf->wps_vendor_ext_m1);
1309                 if (!wps->dev.vendor_ext_m1) {
1310                         wpa_printf(MSG_ERROR, "WPS: Cannot "
1311                                    "allocate memory for vendor_ext_m1");
1312                 }
1313         }
1314 }
1315
1316
1317 int wpas_wps_init(struct wpa_supplicant *wpa_s)
1318 {
1319         struct wps_context *wps;
1320         struct wps_registrar_config rcfg;
1321         struct hostapd_hw_modes *modes;
1322         u16 m;
1323
1324         wps = os_zalloc(sizeof(*wps));
1325         if (wps == NULL)
1326                 return -1;
1327
1328         wps->cred_cb = wpa_supplicant_wps_cred;
1329         wps->event_cb = wpa_supplicant_wps_event;
1330         wps->cb_ctx = wpa_s;
1331
1332         wps->dev.device_name = wpa_s->conf->device_name;
1333         wps->dev.manufacturer = wpa_s->conf->manufacturer;
1334         wps->dev.model_name = wpa_s->conf->model_name;
1335         wps->dev.model_number = wpa_s->conf->model_number;
1336         wps->dev.serial_number = wpa_s->conf->serial_number;
1337         wps->config_methods =
1338                 wps_config_methods_str2bin(wpa_s->conf->config_methods);
1339         if ((wps->config_methods & (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) ==
1340             (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
1341                 wpa_printf(MSG_ERROR, "WPS: Both Label and Display config "
1342                            "methods are not allowed at the same time");
1343                 os_free(wps);
1344                 return -1;
1345         }
1346         wps->config_methods = wps_fix_config_methods(wps->config_methods);
1347         wps->dev.config_methods = wps->config_methods;
1348         os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type,
1349                   WPS_DEV_TYPE_LEN);
1350
1351         wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
1352         os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type,
1353                   WPS_DEV_TYPE_LEN * wps->dev.num_sec_dev_types);
1354
1355         wpas_wps_set_vendor_ext_m1(wpa_s, wps);
1356
1357         wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
1358         modes = wpa_s->hw.modes;
1359         if (modes) {
1360                 for (m = 0; m < wpa_s->hw.num_modes; m++) {
1361                         if (modes[m].mode == HOSTAPD_MODE_IEEE80211B ||
1362                             modes[m].mode == HOSTAPD_MODE_IEEE80211G)
1363                                 wps->dev.rf_bands |= WPS_RF_24GHZ;
1364                         else if (modes[m].mode == HOSTAPD_MODE_IEEE80211A)
1365                                 wps->dev.rf_bands |= WPS_RF_50GHZ;
1366                 }
1367         }
1368         if (wps->dev.rf_bands == 0) {
1369                 /*
1370                  * Default to claiming support for both bands if the driver
1371                  * does not provide support for fetching supported bands.
1372                  */
1373                 wps->dev.rf_bands = WPS_RF_24GHZ | WPS_RF_50GHZ;
1374         }
1375         os_memcpy(wps->dev.mac_addr, wpa_s->own_addr, ETH_ALEN);
1376         wpas_wps_set_uuid(wpa_s, wps);
1377
1378         wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK;
1379         wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP;
1380
1381         os_memset(&rcfg, 0, sizeof(rcfg));
1382         rcfg.new_psk_cb = wpas_wps_new_psk_cb;
1383         rcfg.pin_needed_cb = wpas_wps_pin_needed_cb;
1384         rcfg.set_sel_reg_cb = wpas_wps_set_sel_reg_cb;
1385         rcfg.cb_ctx = wpa_s;
1386
1387         wps->registrar = wps_registrar_init(wps, &rcfg);
1388         if (wps->registrar == NULL) {
1389                 wpa_printf(MSG_DEBUG, "Failed to initialize WPS Registrar");
1390                 os_free(wps);
1391                 return -1;
1392         }
1393
1394         wpa_s->wps = wps;
1395
1396         return 0;
1397 }
1398
1399
1400 void wpas_wps_deinit(struct wpa_supplicant *wpa_s)
1401 {
1402         eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
1403         eloop_cancel_timeout(wpas_wps_clear_timeout, wpa_s, NULL);
1404         eloop_cancel_timeout(wpas_wps_reenable_networks_cb, wpa_s, NULL);
1405         wpas_wps_clear_ap_info(wpa_s);
1406
1407         if (wpa_s->wps == NULL)
1408                 return;
1409
1410 #ifdef CONFIG_WPS_ER
1411         wps_er_deinit(wpa_s->wps_er, NULL, NULL);
1412         wpa_s->wps_er = NULL;
1413 #endif /* CONFIG_WPS_ER */
1414
1415         wps_registrar_deinit(wpa_s->wps->registrar);
1416         wpabuf_free(wpa_s->wps->dh_pubkey);
1417         wpabuf_free(wpa_s->wps->dh_privkey);
1418         wpabuf_free(wpa_s->wps->dev.vendor_ext_m1);
1419         os_free(wpa_s->wps->network_key);
1420         os_free(wpa_s->wps);
1421         wpa_s->wps = NULL;
1422 }
1423
1424
1425 int wpas_wps_ssid_bss_match(struct wpa_supplicant *wpa_s,
1426                             struct wpa_ssid *ssid, struct wpa_bss *bss)
1427 {
1428         struct wpabuf *wps_ie;
1429
1430         if (!(ssid->key_mgmt & WPA_KEY_MGMT_WPS))
1431                 return -1;
1432
1433         wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1434         if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
1435                 if (!wps_ie) {
1436                         wpa_printf(MSG_DEBUG, "   skip - non-WPS AP");
1437                         return 0;
1438                 }
1439
1440                 if (!wps_is_selected_pbc_registrar(wps_ie)) {
1441                         wpa_printf(MSG_DEBUG, "   skip - WPS AP "
1442                                    "without active PBC Registrar");
1443                         wpabuf_free(wps_ie);
1444                         return 0;
1445                 }
1446
1447                 /* TODO: overlap detection */
1448                 wpa_printf(MSG_DEBUG, "   selected based on WPS IE "
1449                            "(Active PBC)");
1450                 wpabuf_free(wps_ie);
1451                 return 1;
1452         }
1453
1454         if (eap_is_wps_pin_enrollee(&ssid->eap)) {
1455                 if (!wps_ie) {
1456                         wpa_printf(MSG_DEBUG, "   skip - non-WPS AP");
1457                         return 0;
1458                 }
1459
1460                 /*
1461                  * Start with WPS APs that advertise our address as an
1462                  * authorized MAC (v2.0) or active PIN Registrar (v1.0) and
1463                  * allow any WPS AP after couple of scans since some APs do not
1464                  * set Selected Registrar attribute properly when using
1465                  * external Registrar.
1466                  */
1467                 if (!wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1)) {
1468                         if (wpa_s->scan_runs < WPS_PIN_SCAN_IGNORE_SEL_REG) {
1469                                 wpa_printf(MSG_DEBUG, "   skip - WPS AP "
1470                                            "without active PIN Registrar");
1471                                 wpabuf_free(wps_ie);
1472                                 return 0;
1473                         }
1474                         wpa_printf(MSG_DEBUG, "   selected based on WPS IE");
1475                 } else {
1476                         wpa_printf(MSG_DEBUG, "   selected based on WPS IE "
1477                                    "(Authorized MAC or Active PIN)");
1478                 }
1479                 wpabuf_free(wps_ie);
1480                 return 1;
1481         }
1482
1483         if (wps_ie) {
1484                 wpa_printf(MSG_DEBUG, "   selected based on WPS IE");
1485                 wpabuf_free(wps_ie);
1486                 return 1;
1487         }
1488
1489         return -1;
1490 }
1491
1492
1493 int wpas_wps_ssid_wildcard_ok(struct wpa_supplicant *wpa_s,
1494                               struct wpa_ssid *ssid,
1495                               struct wpa_bss *bss)
1496 {
1497         struct wpabuf *wps_ie = NULL;
1498         int ret = 0;
1499
1500         if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
1501                 wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1502                 if (wps_ie && wps_is_selected_pbc_registrar(wps_ie)) {
1503                         /* allow wildcard SSID for WPS PBC */
1504                         ret = 1;
1505                 }
1506         } else if (eap_is_wps_pin_enrollee(&ssid->eap)) {
1507                 wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1508                 if (wps_ie &&
1509                     (wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1) ||
1510                      wpa_s->scan_runs >= WPS_PIN_SCAN_IGNORE_SEL_REG)) {
1511                         /* allow wildcard SSID for WPS PIN */
1512                         ret = 1;
1513                 }
1514         }
1515
1516         if (!ret && ssid->bssid_set &&
1517             os_memcmp(ssid->bssid, bss->bssid, ETH_ALEN) == 0) {
1518                 /* allow wildcard SSID due to hardcoded BSSID match */
1519                 ret = 1;
1520         }
1521
1522 #ifdef CONFIG_WPS_STRICT
1523         if (wps_ie) {
1524                 if (wps_validate_beacon_probe_resp(wps_ie, bss->beacon_ie_len >
1525                                                    0, bss->bssid) < 0)
1526                         ret = 0;
1527                 if (bss->beacon_ie_len) {
1528                         struct wpabuf *bcn_wps;
1529                         bcn_wps = wpa_bss_get_vendor_ie_multi_beacon(
1530                                 bss, WPS_IE_VENDOR_TYPE);
1531                         if (bcn_wps == NULL) {
1532                                 wpa_printf(MSG_DEBUG, "WPS: Mandatory WPS IE "
1533                                            "missing from AP Beacon");
1534                                 ret = 0;
1535                         } else {
1536                                 if (wps_validate_beacon(wps_ie) < 0)
1537                                         ret = 0;
1538                                 wpabuf_free(bcn_wps);
1539                         }
1540                 }
1541         }
1542 #endif /* CONFIG_WPS_STRICT */
1543
1544         wpabuf_free(wps_ie);
1545
1546         return ret;
1547 }
1548
1549
1550 int wpas_wps_scan_pbc_overlap(struct wpa_supplicant *wpa_s,
1551                               struct wpa_bss *selected, struct wpa_ssid *ssid)
1552 {
1553         const u8 *sel_uuid, *uuid;
1554         struct wpabuf *wps_ie;
1555         int ret = 0;
1556         struct wpa_bss *bss;
1557
1558         if (!eap_is_wps_pbc_enrollee(&ssid->eap))
1559                 return 0;
1560
1561         wpa_printf(MSG_DEBUG, "WPS: Check whether PBC session overlap is "
1562                    "present in scan results; selected BSSID " MACSTR,
1563                    MAC2STR(selected->bssid));
1564
1565         /* Make sure that only one AP is in active PBC mode */
1566         wps_ie = wpa_bss_get_vendor_ie_multi(selected, WPS_IE_VENDOR_TYPE);
1567         if (wps_ie) {
1568                 sel_uuid = wps_get_uuid_e(wps_ie);
1569                 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the selected BSS",
1570                             sel_uuid, UUID_LEN);
1571         } else {
1572                 wpa_printf(MSG_DEBUG, "WPS: Selected BSS does not include "
1573                            "WPS IE?!");
1574                 sel_uuid = NULL;
1575         }
1576
1577         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1578                 struct wpabuf *ie;
1579                 if (bss == selected)
1580                         continue;
1581                 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1582                 if (!ie)
1583                         continue;
1584                 if (!wps_is_selected_pbc_registrar(ie)) {
1585                         wpabuf_free(ie);
1586                         continue;
1587                 }
1588                 wpa_printf(MSG_DEBUG, "WPS: Another BSS in active PBC mode: "
1589                            MACSTR, MAC2STR(bss->bssid));
1590                 uuid = wps_get_uuid_e(ie);
1591                 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the other BSS",
1592                             uuid, UUID_LEN);
1593                 if (sel_uuid == NULL || uuid == NULL ||
1594                     os_memcmp(sel_uuid, uuid, UUID_LEN) != 0) {
1595                         ret = 1; /* PBC overlap */
1596                         wpa_msg(wpa_s, MSG_INFO, "WPS: PBC overlap detected: "
1597                                 MACSTR " and " MACSTR,
1598                                 MAC2STR(selected->bssid),
1599                                 MAC2STR(bss->bssid));
1600                         wpabuf_free(ie);
1601                         break;
1602                 }
1603
1604                 /* TODO: verify that this is reasonable dual-band situation */
1605
1606                 wpabuf_free(ie);
1607         }
1608
1609         wpabuf_free(wps_ie);
1610
1611         return ret;
1612 }
1613
1614
1615 void wpas_wps_notify_scan_results(struct wpa_supplicant *wpa_s)
1616 {
1617         struct wpa_bss *bss;
1618         unsigned int pbc = 0, auth = 0, pin = 0, wps = 0;
1619
1620         if (wpa_s->disconnected || wpa_s->wpa_state >= WPA_ASSOCIATED)
1621                 return;
1622
1623         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1624                 struct wpabuf *ie;
1625                 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1626                 if (!ie)
1627                         continue;
1628                 if (wps_is_selected_pbc_registrar(ie))
1629                         pbc++;
1630                 else if (wps_is_addr_authorized(ie, wpa_s->own_addr, 0))
1631                         auth++;
1632                 else if (wps_is_selected_pin_registrar(ie))
1633                         pin++;
1634                 else
1635                         wps++;
1636                 wpabuf_free(ie);
1637         }
1638
1639         if (pbc)
1640                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PBC);
1641         else if (auth)
1642                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_AUTH);
1643         else if (pin)
1644                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PIN);
1645         else if (wps)
1646                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE);
1647 }
1648
1649
1650 int wpas_wps_searching(struct wpa_supplicant *wpa_s)
1651 {
1652         struct wpa_ssid *ssid;
1653
1654         for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1655                 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && !ssid->disabled)
1656                         return 1;
1657         }
1658
1659         return 0;
1660 }
1661
1662
1663 int wpas_wps_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
1664                               char *end)
1665 {
1666         struct wpabuf *wps_ie;
1667         int ret;
1668
1669         wps_ie = ieee802_11_vendor_ie_concat(ies, ies_len, WPS_DEV_OUI_WFA);
1670         if (wps_ie == NULL)
1671                 return 0;
1672
1673         ret = wps_attr_text(wps_ie, buf, end);
1674         wpabuf_free(wps_ie);
1675         return ret;
1676 }
1677
1678
1679 int wpas_wps_er_start(struct wpa_supplicant *wpa_s, const char *filter)
1680 {
1681 #ifdef CONFIG_WPS_ER
1682         if (wpa_s->wps_er) {
1683                 wps_er_refresh(wpa_s->wps_er);
1684                 return 0;
1685         }
1686         wpa_s->wps_er = wps_er_init(wpa_s->wps, wpa_s->ifname, filter);
1687         if (wpa_s->wps_er == NULL)
1688                 return -1;
1689         return 0;
1690 #else /* CONFIG_WPS_ER */
1691         return 0;
1692 #endif /* CONFIG_WPS_ER */
1693 }
1694
1695
1696 int wpas_wps_er_stop(struct wpa_supplicant *wpa_s)
1697 {
1698 #ifdef CONFIG_WPS_ER
1699         wps_er_deinit(wpa_s->wps_er, NULL, NULL);
1700         wpa_s->wps_er = NULL;
1701 #endif /* CONFIG_WPS_ER */
1702         return 0;
1703 }
1704
1705
1706 #ifdef CONFIG_WPS_ER
1707 int wpas_wps_er_add_pin(struct wpa_supplicant *wpa_s, const u8 *addr,
1708                         const char *uuid, const char *pin)
1709 {
1710         u8 u[UUID_LEN];
1711         const u8 *use_uuid = NULL;
1712         u8 addr_buf[ETH_ALEN];
1713
1714         if (os_strcmp(uuid, "any") == 0) {
1715         } else if (uuid_str2bin(uuid, u) == 0) {
1716                 use_uuid = u;
1717         } else if (hwaddr_aton(uuid, addr_buf) == 0) {
1718                 use_uuid = wps_er_get_sta_uuid(wpa_s->wps_er, addr_buf);
1719                 if (use_uuid == NULL)
1720                         return -1;
1721         } else
1722                 return -1;
1723         return wps_registrar_add_pin(wpa_s->wps->registrar, addr,
1724                                      use_uuid,
1725                                      (const u8 *) pin, os_strlen(pin), 300);
1726 }
1727
1728
1729 int wpas_wps_er_pbc(struct wpa_supplicant *wpa_s, const char *uuid)
1730 {
1731         u8 u[UUID_LEN], *use_uuid = NULL;
1732         u8 addr[ETH_ALEN], *use_addr = NULL;
1733
1734         if (uuid_str2bin(uuid, u) == 0)
1735                 use_uuid = u;
1736         else if (hwaddr_aton(uuid, addr) == 0)
1737                 use_addr = addr;
1738         else
1739                 return -1;
1740         return wps_er_pbc(wpa_s->wps_er, use_uuid, use_addr);
1741 }
1742
1743
1744 int wpas_wps_er_learn(struct wpa_supplicant *wpa_s, const char *uuid,
1745                       const char *pin)
1746 {
1747         u8 u[UUID_LEN], *use_uuid = NULL;
1748         u8 addr[ETH_ALEN], *use_addr = NULL;
1749
1750         if (uuid_str2bin(uuid, u) == 0)
1751                 use_uuid = u;
1752         else if (hwaddr_aton(uuid, addr) == 0)
1753                 use_addr = addr;
1754         else
1755                 return -1;
1756
1757         return wps_er_learn(wpa_s->wps_er, use_uuid, use_addr, (const u8 *) pin,
1758                             os_strlen(pin));
1759 }
1760
1761
1762 static int wpas_wps_network_to_cred(struct wpa_ssid *ssid,
1763                                     struct wps_credential *cred)
1764 {
1765         os_memset(cred, 0, sizeof(*cred));
1766         if (ssid->ssid_len > 32)
1767                 return -1;
1768         os_memcpy(cred->ssid, ssid->ssid, ssid->ssid_len);
1769         cred->ssid_len = ssid->ssid_len;
1770         if (ssid->key_mgmt & WPA_KEY_MGMT_PSK) {
1771                 cred->auth_type = (ssid->proto & WPA_PROTO_RSN) ?
1772                         WPS_AUTH_WPA2PSK : WPS_AUTH_WPAPSK;
1773                 if (ssid->pairwise_cipher & WPA_CIPHER_CCMP)
1774                         cred->encr_type = WPS_ENCR_AES;
1775                 else
1776                         cred->encr_type = WPS_ENCR_TKIP;
1777                 if (ssid->passphrase) {
1778                         cred->key_len = os_strlen(ssid->passphrase);
1779                         if (cred->key_len >= 64)
1780                                 return -1;
1781                         os_memcpy(cred->key, ssid->passphrase, cred->key_len);
1782                 } else if (ssid->psk_set) {
1783                         cred->key_len = 32;
1784                         os_memcpy(cred->key, ssid->psk, 32);
1785                 } else
1786                         return -1;
1787         } else {
1788                 cred->auth_type = WPS_AUTH_OPEN;
1789                 cred->encr_type = WPS_ENCR_NONE;
1790         }
1791
1792         return 0;
1793 }
1794
1795
1796 int wpas_wps_er_set_config(struct wpa_supplicant *wpa_s, const char *uuid,
1797                            int id)
1798 {
1799         u8 u[UUID_LEN], *use_uuid = NULL;
1800         u8 addr[ETH_ALEN], *use_addr = NULL;
1801         struct wpa_ssid *ssid;
1802         struct wps_credential cred;
1803
1804         if (uuid_str2bin(uuid, u) == 0)
1805                 use_uuid = u;
1806         else if (hwaddr_aton(uuid, addr) == 0)
1807                 use_addr = addr;
1808         else
1809                 return -1;
1810         ssid = wpa_config_get_network(wpa_s->conf, id);
1811         if (ssid == NULL || ssid->ssid == NULL)
1812                 return -1;
1813
1814         if (wpas_wps_network_to_cred(ssid, &cred) < 0)
1815                 return -1;
1816         return wps_er_set_config(wpa_s->wps_er, use_uuid, use_addr, &cred);
1817 }
1818
1819
1820 int wpas_wps_er_config(struct wpa_supplicant *wpa_s, const char *uuid,
1821                        const char *pin, struct wps_new_ap_settings *settings)
1822 {
1823         u8 u[UUID_LEN], *use_uuid = NULL;
1824         u8 addr[ETH_ALEN], *use_addr = NULL;
1825         struct wps_credential cred;
1826         size_t len;
1827
1828         if (uuid_str2bin(uuid, u) == 0)
1829                 use_uuid = u;
1830         else if (hwaddr_aton(uuid, addr) == 0)
1831                 use_addr = addr;
1832         else
1833                 return -1;
1834         if (settings->ssid_hex == NULL || settings->auth == NULL ||
1835             settings->encr == NULL || settings->key_hex == NULL)
1836                 return -1;
1837
1838         os_memset(&cred, 0, sizeof(cred));
1839         len = os_strlen(settings->ssid_hex);
1840         if ((len & 1) || len > 2 * sizeof(cred.ssid) ||
1841             hexstr2bin(settings->ssid_hex, cred.ssid, len / 2))
1842                 return -1;
1843         cred.ssid_len = len / 2;
1844
1845         len = os_strlen(settings->key_hex);
1846         if ((len & 1) || len > 2 * sizeof(cred.key) ||
1847             hexstr2bin(settings->key_hex, cred.key, len / 2))
1848                 return -1;
1849         cred.key_len = len / 2;
1850
1851         if (os_strcmp(settings->auth, "OPEN") == 0)
1852                 cred.auth_type = WPS_AUTH_OPEN;
1853         else if (os_strcmp(settings->auth, "WPAPSK") == 0)
1854                 cred.auth_type = WPS_AUTH_WPAPSK;
1855         else if (os_strcmp(settings->auth, "WPA2PSK") == 0)
1856                 cred.auth_type = WPS_AUTH_WPA2PSK;
1857         else
1858                 return -1;
1859
1860         if (os_strcmp(settings->encr, "NONE") == 0)
1861                 cred.encr_type = WPS_ENCR_NONE;
1862         else if (os_strcmp(settings->encr, "WEP") == 0)
1863                 cred.encr_type = WPS_ENCR_WEP;
1864         else if (os_strcmp(settings->encr, "TKIP") == 0)
1865                 cred.encr_type = WPS_ENCR_TKIP;
1866         else if (os_strcmp(settings->encr, "CCMP") == 0)
1867                 cred.encr_type = WPS_ENCR_AES;
1868         else
1869                 return -1;
1870
1871         return wps_er_config(wpa_s->wps_er, use_uuid, use_addr,
1872                              (const u8 *) pin, os_strlen(pin), &cred);
1873 }
1874
1875
1876 #ifdef CONFIG_WPS_NFC
1877 struct wpabuf * wpas_wps_er_nfc_config_token(struct wpa_supplicant *wpa_s,
1878                                              int ndef, const char *uuid)
1879 {
1880         struct wpabuf *ret;
1881         u8 u[UUID_LEN], *use_uuid = NULL;
1882         u8 addr[ETH_ALEN], *use_addr = NULL;
1883
1884         if (!wpa_s->wps_er)
1885                 return NULL;
1886
1887         if (uuid_str2bin(uuid, u) == 0)
1888                 use_uuid = u;
1889         else if (hwaddr_aton(uuid, addr) == 0)
1890                 use_addr = addr;
1891         else
1892                 return NULL;
1893
1894         ret = wps_er_nfc_config_token(wpa_s->wps_er, use_uuid, use_addr);
1895         if (ndef && ret) {
1896                 struct wpabuf *tmp;
1897                 tmp = ndef_build_wifi(ret);
1898                 wpabuf_free(ret);
1899                 if (tmp == NULL)
1900                         return NULL;
1901                 ret = tmp;
1902         }
1903
1904         return ret;
1905 }
1906 #endif /* CONFIG_WPS_NFC */
1907
1908
1909 static int callbacks_pending = 0;
1910
1911 static void wpas_wps_terminate_cb(void *ctx)
1912 {
1913         wpa_printf(MSG_DEBUG, "WPS ER: Terminated");
1914         if (--callbacks_pending <= 0)
1915                 eloop_terminate();
1916 }
1917 #endif /* CONFIG_WPS_ER */
1918
1919
1920 int wpas_wps_terminate_pending(struct wpa_supplicant *wpa_s)
1921 {
1922 #ifdef CONFIG_WPS_ER
1923         if (wpa_s->wps_er) {
1924                 callbacks_pending++;
1925                 wps_er_deinit(wpa_s->wps_er, wpas_wps_terminate_cb, wpa_s);
1926                 wpa_s->wps_er = NULL;
1927                 return 1;
1928         }
1929 #endif /* CONFIG_WPS_ER */
1930         return 0;
1931 }
1932
1933
1934 int wpas_wps_in_progress(struct wpa_supplicant *wpa_s)
1935 {
1936         struct wpa_ssid *ssid;
1937
1938         for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1939                 if (!ssid->disabled && ssid->key_mgmt == WPA_KEY_MGMT_WPS)
1940                         return 1;
1941         }
1942
1943         return 0;
1944 }
1945
1946
1947 void wpas_wps_update_config(struct wpa_supplicant *wpa_s)
1948 {
1949         struct wps_context *wps = wpa_s->wps;
1950
1951         if (wps == NULL)
1952                 return;
1953
1954         if (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS) {
1955                 wps->config_methods = wps_config_methods_str2bin(
1956                         wpa_s->conf->config_methods);
1957                 if ((wps->config_methods &
1958                      (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) ==
1959                     (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
1960                         wpa_printf(MSG_ERROR, "WPS: Both Label and Display "
1961                                    "config methods are not allowed at the "
1962                                    "same time");
1963                         wps->config_methods &= ~WPS_CONFIG_LABEL;
1964                 }
1965         }
1966         wps->config_methods = wps_fix_config_methods(wps->config_methods);
1967         wps->dev.config_methods = wps->config_methods;
1968
1969         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
1970                 os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type,
1971                           WPS_DEV_TYPE_LEN);
1972
1973         if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE) {
1974                 wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
1975                 os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type,
1976                           wps->dev.num_sec_dev_types * WPS_DEV_TYPE_LEN);
1977         }
1978
1979         if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION)
1980                 wpas_wps_set_vendor_ext_m1(wpa_s, wps);
1981
1982         if (wpa_s->conf->changed_parameters & CFG_CHANGED_OS_VERSION)
1983                 wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
1984
1985         if (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID)
1986                 wpas_wps_set_uuid(wpa_s, wps);
1987
1988         if (wpa_s->conf->changed_parameters &
1989             (CFG_CHANGED_DEVICE_NAME | CFG_CHANGED_WPS_STRING)) {
1990                 /* Update pointers to make sure they refer current values */
1991                 wps->dev.device_name = wpa_s->conf->device_name;
1992                 wps->dev.manufacturer = wpa_s->conf->manufacturer;
1993                 wps->dev.model_name = wpa_s->conf->model_name;
1994                 wps->dev.model_number = wpa_s->conf->model_number;
1995                 wps->dev.serial_number = wpa_s->conf->serial_number;
1996         }
1997 }
1998
1999
2000 #ifdef CONFIG_WPS_NFC
2001
2002 #ifdef CONFIG_WPS_ER
2003 static struct wpabuf *
2004 wpas_wps_network_config_token(struct wpa_supplicant *wpa_s, int ndef,
2005                               struct wpa_ssid *ssid)
2006 {
2007         struct wpabuf *ret;
2008         struct wps_credential cred;
2009
2010         if (wpas_wps_network_to_cred(ssid, &cred) < 0)
2011                 return NULL;
2012
2013         ret = wps_er_config_token_from_cred(wpa_s->wps, &cred);
2014
2015         if (ndef && ret) {
2016                 struct wpabuf *tmp;
2017                 tmp = ndef_build_wifi(ret);
2018                 wpabuf_free(ret);
2019                 if (tmp == NULL)
2020                         return NULL;
2021                 ret = tmp;
2022         }
2023
2024         return ret;
2025 }
2026 #endif /* CONFIG_WPS_ER */
2027
2028
2029 struct wpabuf * wpas_wps_nfc_config_token(struct wpa_supplicant *wpa_s,
2030                                           int ndef, const char *id_str)
2031 {
2032 #ifdef CONFIG_WPS_ER
2033         if (id_str) {
2034                 int id;
2035                 char *end = NULL;
2036                 struct wpa_ssid *ssid;
2037
2038                 id = strtol(id_str, &end, 10);
2039                 if (end && *end)
2040                         return NULL;
2041
2042                 ssid = wpa_config_get_network(wpa_s->conf, id);
2043                 if (ssid == NULL)
2044                         return NULL;
2045                 return wpas_wps_network_config_token(wpa_s, ndef, ssid);
2046         }
2047 #endif /* CONFIG_WPS_ER */
2048 #ifdef CONFIG_AP
2049         if (wpa_s->ap_iface)
2050                 return wpas_ap_wps_nfc_config_token(wpa_s, ndef);
2051 #endif /* CONFIG_AP */
2052         return NULL;
2053 }
2054
2055
2056 struct wpabuf * wpas_wps_nfc_token(struct wpa_supplicant *wpa_s, int ndef)
2057 {
2058         if (wpa_s->conf->wps_nfc_pw_from_config) {
2059                 return wps_nfc_token_build(ndef,
2060                                            wpa_s->conf->wps_nfc_dev_pw_id,
2061                                            wpa_s->conf->wps_nfc_dh_pubkey,
2062                                            wpa_s->conf->wps_nfc_dev_pw);
2063         }
2064
2065         return wps_nfc_token_gen(ndef, &wpa_s->conf->wps_nfc_dev_pw_id,
2066                                  &wpa_s->conf->wps_nfc_dh_pubkey,
2067                                  &wpa_s->conf->wps_nfc_dh_privkey,
2068                                  &wpa_s->conf->wps_nfc_dev_pw);
2069 }
2070
2071
2072 int wpas_wps_start_nfc(struct wpa_supplicant *wpa_s, const u8 *bssid)
2073 {
2074         struct wps_context *wps = wpa_s->wps;
2075         char pw[32 * 2 + 1];
2076
2077         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL ||
2078             wpa_s->conf->wps_nfc_dh_privkey == NULL ||
2079             wpa_s->conf->wps_nfc_dev_pw == NULL)
2080                 return -1;
2081
2082         dh5_free(wps->dh_ctx);
2083         wpabuf_free(wps->dh_pubkey);
2084         wpabuf_free(wps->dh_privkey);
2085         wps->dh_privkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
2086         wps->dh_pubkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
2087         if (wps->dh_privkey == NULL || wps->dh_pubkey == NULL) {
2088                 wps->dh_ctx = NULL;
2089                 wpabuf_free(wps->dh_pubkey);
2090                 wps->dh_pubkey = NULL;
2091                 wpabuf_free(wps->dh_privkey);
2092                 wps->dh_privkey = NULL;
2093                 return -1;
2094         }
2095         wps->dh_ctx = dh5_init_fixed(wps->dh_privkey, wps->dh_pubkey);
2096         if (wps->dh_ctx == NULL) {
2097                 wpabuf_free(wps->dh_pubkey);
2098                 wps->dh_pubkey = NULL;
2099                 wpabuf_free(wps->dh_privkey);
2100                 wps->dh_privkey = NULL;
2101                 return -1;
2102         }
2103
2104         wpa_snprintf_hex_uppercase(pw, sizeof(pw),
2105                                    wpabuf_head(wpa_s->conf->wps_nfc_dev_pw),
2106                                    wpabuf_len(wpa_s->conf->wps_nfc_dev_pw));
2107         return wpas_wps_start_pin(wpa_s, bssid, pw, 0,
2108                                   wpa_s->conf->wps_nfc_dev_pw_id);
2109 }
2110
2111
2112 static int wpas_wps_use_cred(struct wpa_supplicant *wpa_s,
2113                              struct wps_parse_attr *attr)
2114 {
2115         wpa_s->wps_ap_channel = 0;
2116
2117         /*
2118          * Disable existing networks temporarily to allow the newly learned
2119          * credential to be preferred. Enable the temporarily disabled networks
2120          * after 10 seconds.
2121          */
2122         wpas_wps_temp_disable(wpa_s, NULL);
2123         eloop_register_timeout(10, 0, wpas_wps_reenable_networks_cb, wpa_s,
2124                                NULL);
2125
2126         if (wps_oob_use_cred(wpa_s->wps, attr) < 0)
2127                 return -1;
2128
2129         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
2130                 return 0;
2131
2132         wpa_printf(MSG_DEBUG, "WPS: Request reconnection with new network "
2133                    "based on the received credential added");
2134         wpa_s->normal_scans = 0;
2135         wpa_supplicant_reinit_autoscan(wpa_s);
2136         if (wpa_s->wps_ap_channel) {
2137                 u16 chan = wpa_s->wps_ap_channel;
2138                 int freq = 0;
2139
2140                 if (chan >= 1 && chan <= 13)
2141                         freq = 2407 + 5 * chan;
2142                 else if (chan == 14)
2143                         freq = 2484;
2144                 else if (chan >= 30)
2145                         freq = 5000 + 5 * chan;
2146
2147                 if (freq) {
2148                         wpa_printf(MSG_DEBUG, "WPS: Credential indicated "
2149                                    "AP channel %u -> %u MHz", chan, freq);
2150                         wpa_s->after_wps = 5;
2151                         wpa_s->wps_freq = freq;
2152                 }
2153         }
2154         wpa_s->disconnected = 0;
2155         wpa_s->reassociate = 1;
2156         wpa_supplicant_req_scan(wpa_s, 0, 0);
2157
2158         return 0;
2159 }
2160
2161
2162 #ifdef CONFIG_WPS_ER
2163 static int wpas_wps_add_nfc_password_token(struct wpa_supplicant *wpa_s,
2164                                            struct wps_parse_attr *attr)
2165 {
2166         return wps_registrar_add_nfc_password_token(
2167                 wpa_s->wps->registrar, attr->oob_dev_password,
2168                 attr->oob_dev_password_len);
2169 }
2170 #endif /* CONFIG_WPS_ER */
2171
2172
2173 static int wpas_wps_nfc_tag_process(struct wpa_supplicant *wpa_s,
2174                                     const struct wpabuf *wps)
2175 {
2176         struct wps_parse_attr attr;
2177
2178         wpa_hexdump_buf(MSG_DEBUG, "WPS: Received NFC tag payload", wps);
2179
2180         if (wps_parse_msg(wps, &attr)) {
2181                 wpa_printf(MSG_DEBUG, "WPS: Ignore invalid data from NFC tag");
2182                 return -1;
2183         }
2184
2185         if (attr.num_cred)
2186                 return wpas_wps_use_cred(wpa_s, &attr);
2187
2188 #ifdef CONFIG_WPS_ER
2189         if (attr.oob_dev_password)
2190                 return wpas_wps_add_nfc_password_token(wpa_s, &attr);
2191 #endif /* CONFIG_WPS_ER */
2192
2193         wpa_printf(MSG_DEBUG, "WPS: Ignore unrecognized NFC tag");
2194         return -1;
2195 }
2196
2197
2198 int wpas_wps_nfc_tag_read(struct wpa_supplicant *wpa_s,
2199                           const struct wpabuf *data)
2200 {
2201         const struct wpabuf *wps = data;
2202         struct wpabuf *tmp = NULL;
2203         int ret;
2204
2205         if (wpabuf_len(data) < 4)
2206                 return -1;
2207
2208         if (*wpabuf_head_u8(data) != 0x10) {
2209                 /* Assume this contains full NDEF record */
2210                 tmp = ndef_parse_wifi(data);
2211                 if (tmp == NULL) {
2212                         wpa_printf(MSG_DEBUG, "WPS: Could not parse NDEF");
2213                         return -1;
2214                 }
2215                 wps = tmp;
2216         }
2217
2218         ret = wpas_wps_nfc_tag_process(wpa_s, wps);
2219         wpabuf_free(tmp);
2220         return ret;
2221 }
2222
2223
2224 struct wpabuf * wpas_wps_nfc_handover_req(struct wpa_supplicant *wpa_s, int cr)
2225 {
2226         if (cr)
2227                 return ndef_build_wifi_hc(1);
2228         return ndef_build_wifi_hr();
2229 }
2230
2231
2232 #ifdef CONFIG_WPS_NFC
2233 struct wpabuf * wpas_wps_er_nfc_handover_sel(struct wpa_supplicant *wpa_s,
2234                                              int ndef, const char *uuid)
2235 {
2236 #ifdef CONFIG_WPS_ER
2237         struct wpabuf *ret;
2238         u8 u[UUID_LEN], *use_uuid = NULL;
2239         u8 addr[ETH_ALEN], *use_addr = NULL;
2240
2241         if (!wpa_s->wps_er)
2242                 return NULL;
2243
2244         if (uuid == NULL)
2245                 return NULL;
2246         if (uuid_str2bin(uuid, u) == 0)
2247                 use_uuid = u;
2248         else if (hwaddr_aton(uuid, addr) == 0)
2249                 use_addr = addr;
2250         else
2251                 return NULL;
2252
2253         /*
2254          * Handover Select carrier record for WPS uses the same format as
2255          * configuration token.
2256          */
2257         ret = wps_er_nfc_config_token(wpa_s->wps_er, use_uuid, use_addr);
2258         if (ndef && ret) {
2259                 struct wpabuf *tmp;
2260                 tmp = ndef_build_wifi(ret);
2261                 wpabuf_free(ret);
2262                 if (tmp == NULL)
2263                         return NULL;
2264                 ret = tmp;
2265         }
2266
2267         return ret;
2268 #else /* CONFIG_WPS_ER */
2269         return NULL;
2270 #endif /* CONFIG_WPS_ER */
2271 }
2272 #endif /* CONFIG_WPS_NFC */
2273
2274
2275 struct wpabuf * wpas_wps_nfc_handover_sel(struct wpa_supplicant *wpa_s,
2276                                           int ndef, int cr, const char *uuid)
2277 {
2278         struct wpabuf *ret;
2279         if (!cr)
2280                 return NULL;
2281         ret = wpas_ap_wps_nfc_handover_sel(wpa_s, ndef);
2282         if (ret)
2283                 return ret;
2284         return wpas_wps_er_nfc_handover_sel(wpa_s, ndef, uuid);
2285 }
2286
2287
2288 int wpas_wps_nfc_rx_handover_req(struct wpa_supplicant *wpa_s,
2289                                  const struct wpabuf *data)
2290 {
2291         /* TODO */
2292         return -1;
2293 }
2294
2295
2296 int wpas_wps_nfc_rx_handover_sel(struct wpa_supplicant *wpa_s,
2297                                  const struct wpabuf *data)
2298 {
2299         struct wpabuf *wps;
2300         int ret;
2301
2302         wps = ndef_parse_wifi(data);
2303         if (wps == NULL)
2304                 return -1;
2305         wpa_printf(MSG_DEBUG, "WPS: Received application/vnd.wfa.wsc "
2306                    "payload from NFC connection handover");
2307         wpa_hexdump_buf_key(MSG_DEBUG, "WPS: NFC payload", wps);
2308         ret = wpas_wps_nfc_tag_process(wpa_s, wps);
2309         wpabuf_free(wps);
2310
2311         return ret;
2312 }
2313
2314
2315 int wpas_wps_nfc_report_handover(struct wpa_supplicant *wpa_s,
2316                                  const struct wpabuf *req,
2317                                  const struct wpabuf *sel)
2318 {
2319         wpa_printf(MSG_DEBUG, "NFC: WPS connection handover reported");
2320         wpa_hexdump_buf_key(MSG_DEBUG, "WPS: Carrier record in request", req);
2321         wpa_hexdump_buf_key(MSG_DEBUG, "WPS: Carrier record in select", sel);
2322         return wpas_wps_nfc_rx_handover_sel(wpa_s, sel);
2323 }
2324
2325 #endif /* CONFIG_WPS_NFC */
2326
2327
2328 extern int wpa_debug_level;
2329
2330 static void wpas_wps_dump_ap_info(struct wpa_supplicant *wpa_s)
2331 {
2332         size_t i;
2333         struct os_time now;
2334
2335         if (wpa_debug_level > MSG_DEBUG)
2336                 return;
2337
2338         if (wpa_s->wps_ap == NULL)
2339                 return;
2340
2341         os_get_time(&now);
2342
2343         for (i = 0; i < wpa_s->num_wps_ap; i++) {
2344                 struct wps_ap_info *ap = &wpa_s->wps_ap[i];
2345                 struct wpa_blacklist *e = wpa_blacklist_get(wpa_s, ap->bssid);
2346
2347                 wpa_printf(MSG_DEBUG, "WPS: AP[%d] " MACSTR " type=%d "
2348                            "tries=%d last_attempt=%d sec ago blacklist=%d",
2349                            (int) i, MAC2STR(ap->bssid), ap->type, ap->tries,
2350                            ap->last_attempt.sec > 0 ?
2351                            (int) now.sec - (int) ap->last_attempt.sec : -1,
2352                            e ? e->count : 0);
2353         }
2354 }
2355
2356
2357 static struct wps_ap_info * wpas_wps_get_ap_info(struct wpa_supplicant *wpa_s,
2358                                                  const u8 *bssid)
2359 {
2360         size_t i;
2361
2362         if (wpa_s->wps_ap == NULL)
2363                 return NULL;
2364
2365         for (i = 0; i < wpa_s->num_wps_ap; i++) {
2366                 struct wps_ap_info *ap = &wpa_s->wps_ap[i];
2367                 if (os_memcmp(ap->bssid, bssid, ETH_ALEN) == 0)
2368                         return ap;
2369         }
2370
2371         return NULL;
2372 }
2373
2374
2375 static void wpas_wps_update_ap_info_bss(struct wpa_supplicant *wpa_s,
2376                                         struct wpa_scan_res *res)
2377 {
2378         struct wpabuf *wps;
2379         enum wps_ap_info_type type;
2380         struct wps_ap_info *ap;
2381         int r;
2382
2383         if (wpa_scan_get_vendor_ie(res, WPS_IE_VENDOR_TYPE) == NULL)
2384                 return;
2385
2386         wps = wpa_scan_get_vendor_ie_multi(res, WPS_IE_VENDOR_TYPE);
2387         if (wps == NULL)
2388                 return;
2389
2390         r = wps_is_addr_authorized(wps, wpa_s->own_addr, 1);
2391         if (r == 2)
2392                 type = WPS_AP_SEL_REG_OUR;
2393         else if (r == 1)
2394                 type = WPS_AP_SEL_REG;
2395         else
2396                 type = WPS_AP_NOT_SEL_REG;
2397
2398         wpabuf_free(wps);
2399
2400         ap = wpas_wps_get_ap_info(wpa_s, res->bssid);
2401         if (ap) {
2402                 if (ap->type != type) {
2403                         wpa_printf(MSG_DEBUG, "WPS: AP " MACSTR
2404                                    " changed type %d -> %d",
2405                                    MAC2STR(res->bssid), ap->type, type);
2406                         ap->type = type;
2407                         if (type != WPS_AP_NOT_SEL_REG)
2408                                 wpa_blacklist_del(wpa_s, ap->bssid);
2409                 }
2410                 return;
2411         }
2412
2413         ap = os_realloc_array(wpa_s->wps_ap, wpa_s->num_wps_ap + 1,
2414                               sizeof(struct wps_ap_info));
2415         if (ap == NULL)
2416                 return;
2417
2418         wpa_s->wps_ap = ap;
2419         ap = &wpa_s->wps_ap[wpa_s->num_wps_ap];
2420         wpa_s->num_wps_ap++;
2421
2422         os_memset(ap, 0, sizeof(*ap));
2423         os_memcpy(ap->bssid, res->bssid, ETH_ALEN);
2424         ap->type = type;
2425         wpa_printf(MSG_DEBUG, "WPS: AP " MACSTR " type %d added",
2426                    MAC2STR(ap->bssid), ap->type);
2427 }
2428
2429
2430 void wpas_wps_update_ap_info(struct wpa_supplicant *wpa_s,
2431                              struct wpa_scan_results *scan_res)
2432 {
2433         size_t i;
2434
2435         for (i = 0; i < scan_res->num; i++)
2436                 wpas_wps_update_ap_info_bss(wpa_s, scan_res->res[i]);
2437
2438         wpas_wps_dump_ap_info(wpa_s);
2439 }
2440
2441
2442 void wpas_wps_notify_assoc(struct wpa_supplicant *wpa_s, const u8 *bssid)
2443 {
2444         struct wps_ap_info *ap;
2445         if (!wpa_s->wps_ap_iter)
2446                 return;
2447         ap = wpas_wps_get_ap_info(wpa_s, bssid);
2448         if (ap == NULL)
2449                 return;
2450         ap->tries++;
2451         os_get_time(&ap->last_attempt);
2452 }