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 static int wpa_supplicant_wps_rf_band(void *ctx)
 860 {
 861         struct wpa_supplicant *wpa_s = ctx;
 862
 863         if (!wpa_s->current_ssid || !wpa_s->assoc_freq)
 864                 return 0;
 865
 866         return (wpa_s->assoc_freq > 2484) ? WPS_RF_50GHZ : WPS_RF_24GHZ;
 867 }
 868
 869
 870 enum wps_request_type wpas_wps_get_req_type(struct wpa_ssid *ssid)
 871 {
 872         if (eap_is_wps_pbc_enrollee(&ssid->eap) ||
 873             eap_is_wps_pin_enrollee(&ssid->eap))
 874                 return WPS_REQ_ENROLLEE;
 875         else
 876                 return WPS_REQ_REGISTRAR;
 877 }
 878
 879
 880 static void wpas_clear_wps(struct wpa_supplicant *wpa_s)
 881 {
 882         int id;
 883         struct wpa_ssid *ssid, *remove_ssid = NULL, *prev_current;
 884
 885         prev_current = wpa_s->current_ssid;
 886
 887         /* Enable the networks disabled during wpas_wps_reassoc */
 888         wpas_wps_reenable_networks(wpa_s);
 889
 890         eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
 891
 892         /* Remove any existing WPS network from configuration */
 893         ssid = wpa_s->conf->ssid;
 894         while (ssid) {
 895                 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
 896                         if (ssid == wpa_s->current_ssid) {
 897                                 wpa_supplicant_deauthenticate(
 898                                         wpa_s, WLAN_REASON_DEAUTH_LEAVING);
 899                         }
 900                         id = ssid->id;
 901                         remove_ssid = ssid;
 902                 } else
 903                         id = -1;
 904                 ssid = ssid->next;
 905                 if (id >= 0) {
 906                         if (prev_current == remove_ssid) {
 907                                 wpa_sm_set_config(wpa_s->wpa, NULL);
 908                                 eapol_sm_notify_config(wpa_s->eapol, NULL,
 909                                                        NULL);
 910                         }
 911                         wpas_notify_network_removed(wpa_s, remove_ssid);
 912                         wpa_config_remove_network(wpa_s->conf, id);
 913                 }
 914         }
 915
 916         wpas_wps_clear_ap_info(wpa_s);
 917 }
 918
 919
 920 static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx)
 921 {
 922         struct wpa_supplicant *wpa_s = eloop_ctx;
 923         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_TIMEOUT "Requested operation timed "
 924                 "out");
 925         wpas_clear_wps(wpa_s);
 926 }
 927
 928
 929 static struct wpa_ssid * wpas_wps_add_network(struct wpa_supplicant *wpa_s,
 930                                               int registrar, const u8 *bssid)
 931 {
 932         struct wpa_ssid *ssid;
 933
 934         ssid = wpa_config_add_network(wpa_s->conf);
 935         if (ssid == NULL)
 936                 return NULL;
 937         wpas_notify_network_added(wpa_s, ssid);
 938         wpa_config_set_network_defaults(ssid);
 939         ssid->temporary = 1;
 940         if (wpa_config_set(ssid, "key_mgmt", "WPS", 0) < 0 ||
 941             wpa_config_set(ssid, "eap", "WSC", 0) < 0 ||
 942             wpa_config_set(ssid, "identity", registrar ?
 943                            "\"" WSC_ID_REGISTRAR "\"" :
 944                            "\"" WSC_ID_ENROLLEE "\"", 0) < 0) {
 945                 wpas_notify_network_removed(wpa_s, ssid);
 946                 wpa_config_remove_network(wpa_s->conf, ssid->id);
 947                 return NULL;
 948         }
 949
 950         if (bssid) {
 951 #ifndef CONFIG_P2P
 952                 struct wpa_bss *bss;
 953                 int count = 0;
 954 #endif /* CONFIG_P2P */
 955
 956                 os_memcpy(ssid->bssid, bssid, ETH_ALEN);
 957                 ssid->bssid_set = 1;
 958
 959                 /*
 960                  * Note: With P2P, the SSID may change at the time the WPS
 961                  * provisioning is started, so better not filter the AP based
 962                  * on the current SSID in the scan results.
 963                  */
 964 #ifndef CONFIG_P2P
 965                 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
 966                         if (os_memcmp(bssid, bss->bssid, ETH_ALEN) != 0)
 967                                 continue;
 968
 969                         os_free(ssid->ssid);
 970                         ssid->ssid = os_malloc(bss->ssid_len);
 971                         if (ssid->ssid == NULL)
 972                                 break;
 973                         os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
 974                         ssid->ssid_len = bss->ssid_len;
 975                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Picked SSID from "
 976                                           "scan results",
 977                                           ssid->ssid, ssid->ssid_len);
 978                         count++;
 979                 }
 980
 981                 if (count > 1) {
 982                         wpa_printf(MSG_DEBUG, "WPS: More than one SSID found "
 983                                    "for the AP; use wildcard");
 984                         os_free(ssid->ssid);
 985                         ssid->ssid = NULL;
 986                         ssid->ssid_len = 0;
 987                 }
 988 #endif /* CONFIG_P2P */
 989         }
 990
 991         return ssid;
 992 }
 993
 994
 995 static void wpas_wps_temp_disable(struct wpa_supplicant *wpa_s,
 996                                   struct wpa_ssid *selected)
 997 {
 998         struct wpa_ssid *ssid;
 999
1000         if (wpa_s->current_ssid)
1001                 wpa_supplicant_deauthenticate(
1002                         wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1003
1004         /* Mark all other networks disabled and trigger reassociation */
1005         ssid = wpa_s->conf->ssid;
1006         while (ssid) {
1007                 int was_disabled = ssid->disabled;
1008                 ssid->disabled_for_connect = 0;
1009                 /*
1010                  * In case the network object corresponds to a persistent group
1011                  * then do not send out network disabled signal. In addition,
1012                  * do not change disabled status of persistent network objects
1013                  * from 2 to 1 should we connect to another network.
1014                  */
1015                 if (was_disabled != 2) {
1016                         ssid->disabled = ssid != selected;
1017                         if (was_disabled != ssid->disabled) {
1018                                 if (ssid->disabled)
1019                                         ssid->disabled_for_connect = 1;
1020                                 wpas_notify_network_enabled_changed(wpa_s,
1021                                                                     ssid);
1022                         }
1023                 }
1024                 ssid = ssid->next;
1025         }
1026 }
1027
1028
1029 static void wpas_wps_reassoc(struct wpa_supplicant *wpa_s,
1030                              struct wpa_ssid *selected, const u8 *bssid)
1031 {
1032         struct wpa_bss *bss;
1033
1034         wpa_s->after_wps = 0;
1035         wpa_s->known_wps_freq = 0;
1036         if (bssid) {
1037                 bss = wpa_bss_get_bssid_latest(wpa_s, bssid);
1038                 if (bss && bss->freq > 0) {
1039                         wpa_s->known_wps_freq = 1;
1040                         wpa_s->wps_freq = bss->freq;
1041                 }
1042         }
1043
1044         wpas_wps_temp_disable(wpa_s, selected);
1045
1046         wpa_s->disconnected = 0;
1047         wpa_s->reassociate = 1;
1048         wpa_s->scan_runs = 0;
1049         wpa_s->normal_scans = 0;
1050         wpa_s->wps_success = 0;
1051         wpa_s->blacklist_cleared = 0;
1052         wpa_supplicant_req_scan(wpa_s, 0, 0);
1053 }
1054
1055
1056 int wpas_wps_start_pbc(struct wpa_supplicant *wpa_s, const u8 *bssid,
1057                        int p2p_group)
1058 {
1059         struct wpa_ssid *ssid;
1060         wpas_clear_wps(wpa_s);
1061         ssid = wpas_wps_add_network(wpa_s, 0, bssid);
1062         if (ssid == NULL)
1063                 return -1;
1064         ssid->temporary = 1;
1065         ssid->p2p_group = p2p_group;
1066 #ifdef CONFIG_P2P
1067         if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) {
1068                 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1);
1069                 if (ssid->ssid) {
1070                         ssid->ssid_len = wpa_s->go_params->ssid_len;
1071                         os_memcpy(ssid->ssid, wpa_s->go_params->ssid,
1072                                   ssid->ssid_len);
1073                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP "
1074                                           "SSID", ssid->ssid, ssid->ssid_len);
1075                 }
1076         }
1077 #endif /* CONFIG_P2P */
1078         if (wpa_config_set(ssid, "phase1", "\"pbc=1\"", 0) < 0)
1079                 return -1;
1080         if (wpa_s->wps_fragment_size)
1081                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
1082         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
1083                                wpa_s, NULL);
1084         wpas_wps_reassoc(wpa_s, ssid, bssid);
1085         return 0;
1086 }
1087
1088
1089 int wpas_wps_start_pin(struct wpa_supplicant *wpa_s, const u8 *bssid,
1090                        const char *pin, int p2p_group, u16 dev_pw_id)
1091 {
1092         struct wpa_ssid *ssid;
1093         char val[128];
1094         unsigned int rpin = 0;
1095
1096         wpas_clear_wps(wpa_s);
1097         ssid = wpas_wps_add_network(wpa_s, 0, bssid);
1098         if (ssid == NULL)
1099                 return -1;
1100         ssid->temporary = 1;
1101         ssid->p2p_group = p2p_group;
1102 #ifdef CONFIG_P2P
1103         if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) {
1104                 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1);
1105                 if (ssid->ssid) {
1106                         ssid->ssid_len = wpa_s->go_params->ssid_len;
1107                         os_memcpy(ssid->ssid, wpa_s->go_params->ssid,
1108                                   ssid->ssid_len);
1109                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP "
1110                                           "SSID", ssid->ssid, ssid->ssid_len);
1111                 }
1112         }
1113 #endif /* CONFIG_P2P */
1114         if (pin)
1115                 os_snprintf(val, sizeof(val), "\"pin=%s dev_pw_id=%u\"",
1116                             pin, dev_pw_id);
1117         else {
1118                 rpin = wps_generate_pin();
1119                 os_snprintf(val, sizeof(val), "\"pin=%08d dev_pw_id=%u\"",
1120                             rpin, dev_pw_id);
1121         }
1122         if (wpa_config_set(ssid, "phase1", val, 0) < 0)
1123                 return -1;
1124         if (wpa_s->wps_fragment_size)
1125                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
1126         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
1127                                wpa_s, NULL);
1128         wpa_s->wps_ap_iter = 1;
1129         wpas_wps_reassoc(wpa_s, ssid, bssid);
1130         return rpin;
1131 }
1132
1133
1134 /* Cancel the wps pbc/pin requests */
1135 int wpas_wps_cancel(struct wpa_supplicant *wpa_s)
1136 {
1137 #ifdef CONFIG_AP
1138         if (wpa_s->ap_iface) {
1139                 wpa_printf(MSG_DEBUG, "WPS: Cancelling in AP mode");
1140                 return wpa_supplicant_ap_wps_cancel(wpa_s);
1141         }
1142 #endif /* CONFIG_AP */
1143
1144         if (wpa_s->wpa_state == WPA_SCANNING ||
1145             wpa_s->wpa_state == WPA_DISCONNECTED) {
1146                 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - cancel scan");
1147                 wpa_supplicant_cancel_scan(wpa_s);
1148                 wpas_clear_wps(wpa_s);
1149         } else if (wpa_s->wpa_state >= WPA_ASSOCIATED) {
1150                 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - "
1151                            "deauthenticate");
1152                 wpa_supplicant_deauthenticate(wpa_s,
1153                                               WLAN_REASON_DEAUTH_LEAVING);
1154                 wpas_clear_wps(wpa_s);
1155         } else {
1156                 wpas_wps_reenable_networks(wpa_s);
1157                 wpas_wps_clear_ap_info(wpa_s);
1158         }
1159
1160         return 0;
1161 }
1162
1163
1164 int wpas_wps_start_reg(struct wpa_supplicant *wpa_s, const u8 *bssid,
1165                        const char *pin, struct wps_new_ap_settings *settings)
1166 {
1167         struct wpa_ssid *ssid;
1168         char val[200];
1169         char *pos, *end;
1170         int res;
1171
1172         if (!pin)
1173                 return -1;
1174         wpas_clear_wps(wpa_s);
1175         ssid = wpas_wps_add_network(wpa_s, 1, bssid);
1176         if (ssid == NULL)
1177                 return -1;
1178         ssid->temporary = 1;
1179         pos = val;
1180         end = pos + sizeof(val);
1181         res = os_snprintf(pos, end - pos, "\"pin=%s", pin);
1182         if (res < 0 || res >= end - pos)
1183                 return -1;
1184         pos += res;
1185         if (settings) {
1186                 res = os_snprintf(pos, end - pos, " new_ssid=%s new_auth=%s "
1187                                   "new_encr=%s new_key=%s",
1188                                   settings->ssid_hex, settings->auth,
1189                                   settings->encr, settings->key_hex);
1190                 if (res < 0 || res >= end - pos)
1191                         return -1;
1192                 pos += res;
1193         }
1194         res = os_snprintf(pos, end - pos, "\"");
1195         if (res < 0 || res >= end - pos)
1196                 return -1;
1197         if (wpa_config_set(ssid, "phase1", val, 0) < 0)
1198                 return -1;
1199         if (wpa_s->wps_fragment_size)
1200                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
1201         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
1202                                wpa_s, NULL);
1203         wpas_wps_reassoc(wpa_s, ssid, bssid);
1204         return 0;
1205 }
1206
1207
1208 static int wpas_wps_new_psk_cb(void *ctx, const u8 *mac_addr, const u8 *psk,
1209                                size_t psk_len)
1210 {
1211         wpa_printf(MSG_DEBUG, "WPS: Received new WPA/WPA2-PSK from WPS for "
1212                    "STA " MACSTR, MAC2STR(mac_addr));
1213         wpa_hexdump_key(MSG_DEBUG, "Per-device PSK", psk, psk_len);
1214
1215         /* TODO */
1216
1217         return 0;
1218 }
1219
1220
1221 static void wpas_wps_pin_needed_cb(void *ctx, const u8 *uuid_e,
1222                                    const struct wps_device_data *dev)
1223 {
1224         char uuid[40], txt[400];
1225         int len;
1226         char devtype[WPS_DEV_TYPE_BUFSIZE];
1227         if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
1228                 return;
1229         wpa_printf(MSG_DEBUG, "WPS: PIN needed for UUID-E %s", uuid);
1230         len = os_snprintf(txt, sizeof(txt), "WPS-EVENT-PIN-NEEDED %s " MACSTR
1231                           " [%s|%s|%s|%s|%s|%s]",
1232                           uuid, MAC2STR(dev->mac_addr), dev->device_name,
1233                           dev->manufacturer, dev->model_name,
1234                           dev->model_number, dev->serial_number,
1235                           wps_dev_type_bin2str(dev->pri_dev_type, devtype,
1236                                                sizeof(devtype)));
1237         if (len > 0 && len < (int) sizeof(txt))
1238                 wpa_printf(MSG_INFO, "%s", txt);
1239 }
1240
1241
1242 static void wpas_wps_set_sel_reg_cb(void *ctx, int sel_reg, u16 dev_passwd_id,
1243                                     u16 sel_reg_config_methods)
1244 {
1245 #ifdef CONFIG_WPS_ER
1246         struct wpa_supplicant *wpa_s = ctx;
1247
1248         if (wpa_s->wps_er == NULL)
1249                 return;
1250         wpa_printf(MSG_DEBUG, "WPS ER: SetSelectedRegistrar - sel_reg=%d "
1251                    "dev_password_id=%u sel_reg_config_methods=0x%x",
1252                    sel_reg, dev_passwd_id, sel_reg_config_methods);
1253         wps_er_set_sel_reg(wpa_s->wps_er, sel_reg, dev_passwd_id,
1254                            sel_reg_config_methods);
1255 #endif /* CONFIG_WPS_ER */
1256 }
1257
1258
1259 static u16 wps_fix_config_methods(u16 config_methods)
1260 {
1261 #ifdef CONFIG_WPS2
1262         if ((config_methods &
1263              (WPS_CONFIG_DISPLAY | WPS_CONFIG_VIRT_DISPLAY |
1264               WPS_CONFIG_PHY_DISPLAY)) == WPS_CONFIG_DISPLAY) {
1265                 wpa_printf(MSG_INFO, "WPS: Converting display to "
1266                            "virtual_display for WPS 2.0 compliance");
1267                 config_methods |= WPS_CONFIG_VIRT_DISPLAY;
1268         }
1269         if ((config_methods &
1270              (WPS_CONFIG_PUSHBUTTON | WPS_CONFIG_VIRT_PUSHBUTTON |
1271               WPS_CONFIG_PHY_PUSHBUTTON)) == WPS_CONFIG_PUSHBUTTON) {
1272                 wpa_printf(MSG_INFO, "WPS: Converting push_button to "
1273                            "virtual_push_button for WPS 2.0 compliance");
1274                 config_methods |= WPS_CONFIG_VIRT_PUSHBUTTON;
1275         }
1276 #endif /* CONFIG_WPS2 */
1277
1278         return config_methods;
1279 }
1280
1281
1282 static void wpas_wps_set_uuid(struct wpa_supplicant *wpa_s,
1283                               struct wps_context *wps)
1284 {
1285         wpa_printf(MSG_DEBUG, "WPS: Set UUID for interface %s", wpa_s->ifname);
1286         if (is_nil_uuid(wpa_s->conf->uuid)) {
1287                 struct wpa_supplicant *first;
1288                 first = wpa_s->global->ifaces;
1289                 while (first && first->next)
1290                         first = first->next;
1291                 if (first && first != wpa_s) {
1292                         if (wps != wpa_s->global->ifaces->wps)
1293                                 os_memcpy(wps->uuid,
1294                                           wpa_s->global->ifaces->wps->uuid,
1295                                           WPS_UUID_LEN);
1296                         wpa_hexdump(MSG_DEBUG, "WPS: UUID from the first "
1297                                     "interface", wps->uuid, WPS_UUID_LEN);
1298                 } else {
1299                         uuid_gen_mac_addr(wpa_s->own_addr, wps->uuid);
1300                         wpa_hexdump(MSG_DEBUG, "WPS: UUID based on MAC "
1301                                     "address", wps->uuid, WPS_UUID_LEN);
1302                 }
1303         } else {
1304                 os_memcpy(wps->uuid, wpa_s->conf->uuid, WPS_UUID_LEN);
1305                 wpa_hexdump(MSG_DEBUG, "WPS: UUID based on configuration",
1306                             wps->uuid, WPS_UUID_LEN);
1307         }
1308 }
1309
1310
1311 static void wpas_wps_set_vendor_ext_m1(struct wpa_supplicant *wpa_s,
1312                                        struct wps_context *wps)
1313 {
1314         wpabuf_free(wps->dev.vendor_ext_m1);
1315         wps->dev.vendor_ext_m1 = NULL;
1316
1317         if (wpa_s->conf->wps_vendor_ext_m1) {
1318                 wps->dev.vendor_ext_m1 =
1319                         wpabuf_dup(wpa_s->conf->wps_vendor_ext_m1);
1320                 if (!wps->dev.vendor_ext_m1) {
1321                         wpa_printf(MSG_ERROR, "WPS: Cannot "
1322                                    "allocate memory for vendor_ext_m1");
1323                 }
1324         }
1325 }
1326
1327
1328 int wpas_wps_init(struct wpa_supplicant *wpa_s)
1329 {
1330         struct wps_context *wps;
1331         struct wps_registrar_config rcfg;
1332         struct hostapd_hw_modes *modes;
1333         u16 m;
1334
1335         wps = os_zalloc(sizeof(*wps));
1336         if (wps == NULL)
1337                 return -1;
1338
1339         wps->cred_cb = wpa_supplicant_wps_cred;
1340         wps->event_cb = wpa_supplicant_wps_event;
1341         wps->rf_band_cb = wpa_supplicant_wps_rf_band;
1342         wps->cb_ctx = wpa_s;
1343
1344         wps->dev.device_name = wpa_s->conf->device_name;
1345         wps->dev.manufacturer = wpa_s->conf->manufacturer;
1346         wps->dev.model_name = wpa_s->conf->model_name;
1347         wps->dev.model_number = wpa_s->conf->model_number;
1348         wps->dev.serial_number = wpa_s->conf->serial_number;
1349         wps->config_methods =
1350                 wps_config_methods_str2bin(wpa_s->conf->config_methods);
1351         if ((wps->config_methods & (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) ==
1352             (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
1353                 wpa_printf(MSG_ERROR, "WPS: Both Label and Display config "
1354                            "methods are not allowed at the same time");
1355                 os_free(wps);
1356                 return -1;
1357         }
1358         wps->config_methods = wps_fix_config_methods(wps->config_methods);
1359         wps->dev.config_methods = wps->config_methods;
1360         os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type,
1361                   WPS_DEV_TYPE_LEN);
1362
1363         wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
1364         os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type,
1365                   WPS_DEV_TYPE_LEN * wps->dev.num_sec_dev_types);
1366
1367         wpas_wps_set_vendor_ext_m1(wpa_s, wps);
1368
1369         wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
1370         modes = wpa_s->hw.modes;
1371         if (modes) {
1372                 for (m = 0; m < wpa_s->hw.num_modes; m++) {
1373                         if (modes[m].mode == HOSTAPD_MODE_IEEE80211B ||
1374                             modes[m].mode == HOSTAPD_MODE_IEEE80211G)
1375                                 wps->dev.rf_bands |= WPS_RF_24GHZ;
1376                         else if (modes[m].mode == HOSTAPD_MODE_IEEE80211A)
1377                                 wps->dev.rf_bands |= WPS_RF_50GHZ;
1378                 }
1379         }
1380         if (wps->dev.rf_bands == 0) {
1381                 /*
1382                  * Default to claiming support for both bands if the driver
1383                  * does not provide support for fetching supported bands.
1384                  */
1385                 wps->dev.rf_bands = WPS_RF_24GHZ | WPS_RF_50GHZ;
1386         }
1387         os_memcpy(wps->dev.mac_addr, wpa_s->own_addr, ETH_ALEN);
1388         wpas_wps_set_uuid(wpa_s, wps);
1389
1390         wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK;
1391         wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP;
1392
1393         os_memset(&rcfg, 0, sizeof(rcfg));
1394         rcfg.new_psk_cb = wpas_wps_new_psk_cb;
1395         rcfg.pin_needed_cb = wpas_wps_pin_needed_cb;
1396         rcfg.set_sel_reg_cb = wpas_wps_set_sel_reg_cb;
1397         rcfg.cb_ctx = wpa_s;
1398
1399         wps->registrar = wps_registrar_init(wps, &rcfg);
1400         if (wps->registrar == NULL) {
1401                 wpa_printf(MSG_DEBUG, "Failed to initialize WPS Registrar");
1402                 os_free(wps);
1403                 return -1;
1404         }
1405
1406         wpa_s->wps = wps;
1407
1408         return 0;
1409 }
1410
1411
1412 void wpas_wps_deinit(struct wpa_supplicant *wpa_s)
1413 {
1414         eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
1415         eloop_cancel_timeout(wpas_wps_clear_timeout, wpa_s, NULL);
1416         eloop_cancel_timeout(wpas_wps_reenable_networks_cb, wpa_s, NULL);
1417         wpas_wps_clear_ap_info(wpa_s);
1418
1419         if (wpa_s->wps == NULL)
1420                 return;
1421
1422 #ifdef CONFIG_WPS_ER
1423         wps_er_deinit(wpa_s->wps_er, NULL, NULL);
1424         wpa_s->wps_er = NULL;
1425 #endif /* CONFIG_WPS_ER */
1426
1427         wps_registrar_deinit(wpa_s->wps->registrar);
1428         wpabuf_free(wpa_s->wps->dh_pubkey);
1429         wpabuf_free(wpa_s->wps->dh_privkey);
1430         wpabuf_free(wpa_s->wps->dev.vendor_ext_m1);
1431         os_free(wpa_s->wps->network_key);
1432         os_free(wpa_s->wps);
1433         wpa_s->wps = NULL;
1434 }
1435
1436
1437 int wpas_wps_ssid_bss_match(struct wpa_supplicant *wpa_s,
1438                             struct wpa_ssid *ssid, struct wpa_bss *bss)
1439 {
1440         struct wpabuf *wps_ie;
1441
1442         if (!(ssid->key_mgmt & WPA_KEY_MGMT_WPS))
1443                 return -1;
1444
1445         wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1446         if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
1447                 if (!wps_ie) {
1448                         wpa_printf(MSG_DEBUG, "   skip - non-WPS AP");
1449                         return 0;
1450                 }
1451
1452                 if (!wps_is_selected_pbc_registrar(wps_ie)) {
1453                         wpa_printf(MSG_DEBUG, "   skip - WPS AP "
1454                                    "without active PBC Registrar");
1455                         wpabuf_free(wps_ie);
1456                         return 0;
1457                 }
1458
1459                 /* TODO: overlap detection */
1460                 wpa_printf(MSG_DEBUG, "   selected based on WPS IE "
1461                            "(Active PBC)");
1462                 wpabuf_free(wps_ie);
1463                 return 1;
1464         }
1465
1466         if (eap_is_wps_pin_enrollee(&ssid->eap)) {
1467                 if (!wps_ie) {
1468                         wpa_printf(MSG_DEBUG, "   skip - non-WPS AP");
1469                         return 0;
1470                 }
1471
1472                 /*
1473                  * Start with WPS APs that advertise our address as an
1474                  * authorized MAC (v2.0) or active PIN Registrar (v1.0) and
1475                  * allow any WPS AP after couple of scans since some APs do not
1476                  * set Selected Registrar attribute properly when using
1477                  * external Registrar.
1478                  */
1479                 if (!wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1)) {
1480                         if (wpa_s->scan_runs < WPS_PIN_SCAN_IGNORE_SEL_REG) {
1481                                 wpa_printf(MSG_DEBUG, "   skip - WPS AP "
1482                                            "without active PIN Registrar");
1483                                 wpabuf_free(wps_ie);
1484                                 return 0;
1485                         }
1486                         wpa_printf(MSG_DEBUG, "   selected based on WPS IE");
1487                 } else {
1488                         wpa_printf(MSG_DEBUG, "   selected based on WPS IE "
1489                                    "(Authorized MAC or Active PIN)");
1490                 }
1491                 wpabuf_free(wps_ie);
1492                 return 1;
1493         }
1494
1495         if (wps_ie) {
1496                 wpa_printf(MSG_DEBUG, "   selected based on WPS IE");
1497                 wpabuf_free(wps_ie);
1498                 return 1;
1499         }
1500
1501         return -1;
1502 }
1503
1504
1505 int wpas_wps_ssid_wildcard_ok(struct wpa_supplicant *wpa_s,
1506                               struct wpa_ssid *ssid,
1507                               struct wpa_bss *bss)
1508 {
1509         struct wpabuf *wps_ie = NULL;
1510         int ret = 0;
1511
1512         if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
1513                 wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1514                 if (wps_ie && wps_is_selected_pbc_registrar(wps_ie)) {
1515                         /* allow wildcard SSID for WPS PBC */
1516                         ret = 1;
1517                 }
1518         } else if (eap_is_wps_pin_enrollee(&ssid->eap)) {
1519                 wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1520                 if (wps_ie &&
1521                     (wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1) ||
1522                      wpa_s->scan_runs >= WPS_PIN_SCAN_IGNORE_SEL_REG)) {
1523                         /* allow wildcard SSID for WPS PIN */
1524                         ret = 1;
1525                 }
1526         }
1527
1528         if (!ret && ssid->bssid_set &&
1529             os_memcmp(ssid->bssid, bss->bssid, ETH_ALEN) == 0) {
1530                 /* allow wildcard SSID due to hardcoded BSSID match */
1531                 ret = 1;
1532         }
1533
1534 #ifdef CONFIG_WPS_STRICT
1535         if (wps_ie) {
1536                 if (wps_validate_beacon_probe_resp(wps_ie, bss->beacon_ie_len >
1537                                                    0, bss->bssid) < 0)
1538                         ret = 0;
1539                 if (bss->beacon_ie_len) {
1540                         struct wpabuf *bcn_wps;
1541                         bcn_wps = wpa_bss_get_vendor_ie_multi_beacon(
1542                                 bss, WPS_IE_VENDOR_TYPE);
1543                         if (bcn_wps == NULL) {
1544                                 wpa_printf(MSG_DEBUG, "WPS: Mandatory WPS IE "
1545                                            "missing from AP Beacon");
1546                                 ret = 0;
1547                         } else {
1548                                 if (wps_validate_beacon(wps_ie) < 0)
1549                                         ret = 0;
1550                                 wpabuf_free(bcn_wps);
1551                         }
1552                 }
1553         }
1554 #endif /* CONFIG_WPS_STRICT */
1555
1556         wpabuf_free(wps_ie);
1557
1558         return ret;
1559 }
1560
1561
1562 int wpas_wps_scan_pbc_overlap(struct wpa_supplicant *wpa_s,
1563                               struct wpa_bss *selected, struct wpa_ssid *ssid)
1564 {
1565         const u8 *sel_uuid, *uuid;
1566         struct wpabuf *wps_ie;
1567         int ret = 0;
1568         struct wpa_bss *bss;
1569
1570         if (!eap_is_wps_pbc_enrollee(&ssid->eap))
1571                 return 0;
1572
1573         wpa_printf(MSG_DEBUG, "WPS: Check whether PBC session overlap is "
1574                    "present in scan results; selected BSSID " MACSTR,
1575                    MAC2STR(selected->bssid));
1576
1577         /* Make sure that only one AP is in active PBC mode */
1578         wps_ie = wpa_bss_get_vendor_ie_multi(selected, WPS_IE_VENDOR_TYPE);
1579         if (wps_ie) {
1580                 sel_uuid = wps_get_uuid_e(wps_ie);
1581                 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the selected BSS",
1582                             sel_uuid, UUID_LEN);
1583         } else {
1584                 wpa_printf(MSG_DEBUG, "WPS: Selected BSS does not include "
1585                            "WPS IE?!");
1586                 sel_uuid = NULL;
1587         }
1588
1589         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1590                 struct wpabuf *ie;
1591                 if (bss == selected)
1592                         continue;
1593                 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1594                 if (!ie)
1595                         continue;
1596                 if (!wps_is_selected_pbc_registrar(ie)) {
1597                         wpabuf_free(ie);
1598                         continue;
1599                 }
1600                 wpa_printf(MSG_DEBUG, "WPS: Another BSS in active PBC mode: "
1601                            MACSTR, MAC2STR(bss->bssid));
1602                 uuid = wps_get_uuid_e(ie);
1603                 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the other BSS",
1604                             uuid, UUID_LEN);
1605                 if (sel_uuid == NULL || uuid == NULL ||
1606                     os_memcmp(sel_uuid, uuid, UUID_LEN) != 0) {
1607                         ret = 1; /* PBC overlap */
1608                         wpa_msg(wpa_s, MSG_INFO, "WPS: PBC overlap detected: "
1609                                 MACSTR " and " MACSTR,
1610                                 MAC2STR(selected->bssid),
1611                                 MAC2STR(bss->bssid));
1612                         wpabuf_free(ie);
1613                         break;
1614                 }
1615
1616                 /* TODO: verify that this is reasonable dual-band situation */
1617
1618                 wpabuf_free(ie);
1619         }
1620
1621         wpabuf_free(wps_ie);
1622
1623         return ret;
1624 }
1625
1626
1627 void wpas_wps_notify_scan_results(struct wpa_supplicant *wpa_s)
1628 {
1629         struct wpa_bss *bss;
1630         unsigned int pbc = 0, auth = 0, pin = 0, wps = 0;
1631
1632         if (wpa_s->disconnected || wpa_s->wpa_state >= WPA_ASSOCIATED)
1633                 return;
1634
1635         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1636                 struct wpabuf *ie;
1637                 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1638                 if (!ie)
1639                         continue;
1640                 if (wps_is_selected_pbc_registrar(ie))
1641                         pbc++;
1642                 else if (wps_is_addr_authorized(ie, wpa_s->own_addr, 0))
1643                         auth++;
1644                 else if (wps_is_selected_pin_registrar(ie))
1645                         pin++;
1646                 else
1647                         wps++;
1648                 wpabuf_free(ie);
1649         }
1650
1651         if (pbc)
1652                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PBC);
1653         else if (auth)
1654                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_AUTH);
1655         else if (pin)
1656                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PIN);
1657         else if (wps)
1658                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE);
1659 }
1660
1661
1662 int wpas_wps_searching(struct wpa_supplicant *wpa_s)
1663 {
1664         struct wpa_ssid *ssid;
1665
1666         for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1667                 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && !ssid->disabled)
1668                         return 1;
1669         }
1670
1671         return 0;
1672 }
1673
1674
1675 int wpas_wps_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
1676                               char *end)
1677 {
1678         struct wpabuf *wps_ie;
1679         int ret;
1680
1681         wps_ie = ieee802_11_vendor_ie_concat(ies, ies_len, WPS_DEV_OUI_WFA);
1682         if (wps_ie == NULL)
1683                 return 0;
1684
1685         ret = wps_attr_text(wps_ie, buf, end);
1686         wpabuf_free(wps_ie);
1687         return ret;
1688 }
1689
1690
1691 int wpas_wps_er_start(struct wpa_supplicant *wpa_s, const char *filter)
1692 {
1693 #ifdef CONFIG_WPS_ER
1694         if (wpa_s->wps_er) {
1695                 wps_er_refresh(wpa_s->wps_er);
1696                 return 0;
1697         }
1698         wpa_s->wps_er = wps_er_init(wpa_s->wps, wpa_s->ifname, filter);
1699         if (wpa_s->wps_er == NULL)
1700                 return -1;
1701         return 0;
1702 #else /* CONFIG_WPS_ER */
1703         return 0;
1704 #endif /* CONFIG_WPS_ER */
1705 }
1706
1707
1708 int wpas_wps_er_stop(struct wpa_supplicant *wpa_s)
1709 {
1710 #ifdef CONFIG_WPS_ER
1711         wps_er_deinit(wpa_s->wps_er, NULL, NULL);
1712         wpa_s->wps_er = NULL;
1713 #endif /* CONFIG_WPS_ER */
1714         return 0;
1715 }
1716
1717
1718 #ifdef CONFIG_WPS_ER
1719 int wpas_wps_er_add_pin(struct wpa_supplicant *wpa_s, const u8 *addr,
1720                         const char *uuid, const char *pin)
1721 {
1722         u8 u[UUID_LEN];
1723         const u8 *use_uuid = NULL;
1724         u8 addr_buf[ETH_ALEN];
1725
1726         if (os_strcmp(uuid, "any") == 0) {
1727         } else if (uuid_str2bin(uuid, u) == 0) {
1728                 use_uuid = u;
1729         } else if (hwaddr_aton(uuid, addr_buf) == 0) {
1730                 use_uuid = wps_er_get_sta_uuid(wpa_s->wps_er, addr_buf);
1731                 if (use_uuid == NULL)
1732                         return -1;
1733         } else
1734                 return -1;
1735         return wps_registrar_add_pin(wpa_s->wps->registrar, addr,
1736                                      use_uuid,
1737                                      (const u8 *) pin, os_strlen(pin), 300);
1738 }
1739
1740
1741 int wpas_wps_er_pbc(struct wpa_supplicant *wpa_s, const char *uuid)
1742 {
1743         u8 u[UUID_LEN], *use_uuid = NULL;
1744         u8 addr[ETH_ALEN], *use_addr = NULL;
1745
1746         if (uuid_str2bin(uuid, u) == 0)
1747                 use_uuid = u;
1748         else if (hwaddr_aton(uuid, addr) == 0)
1749                 use_addr = addr;
1750         else
1751                 return -1;
1752         return wps_er_pbc(wpa_s->wps_er, use_uuid, use_addr);
1753 }
1754
1755
1756 int wpas_wps_er_learn(struct wpa_supplicant *wpa_s, const char *uuid,
1757                       const char *pin)
1758 {
1759         u8 u[UUID_LEN], *use_uuid = NULL;
1760         u8 addr[ETH_ALEN], *use_addr = NULL;
1761
1762         if (uuid_str2bin(uuid, u) == 0)
1763                 use_uuid = u;
1764         else if (hwaddr_aton(uuid, addr) == 0)
1765                 use_addr = addr;
1766         else
1767                 return -1;
1768
1769         return wps_er_learn(wpa_s->wps_er, use_uuid, use_addr, (const u8 *) pin,
1770                             os_strlen(pin));
1771 }
1772
1773
1774 static int wpas_wps_network_to_cred(struct wpa_ssid *ssid,
1775                                     struct wps_credential *cred)
1776 {
1777         os_memset(cred, 0, sizeof(*cred));
1778         if (ssid->ssid_len > 32)
1779                 return -1;
1780         os_memcpy(cred->ssid, ssid->ssid, ssid->ssid_len);
1781         cred->ssid_len = ssid->ssid_len;
1782         if (ssid->key_mgmt & WPA_KEY_MGMT_PSK) {
1783                 cred->auth_type = (ssid->proto & WPA_PROTO_RSN) ?
1784                         WPS_AUTH_WPA2PSK : WPS_AUTH_WPAPSK;
1785                 if (ssid->pairwise_cipher & WPA_CIPHER_CCMP)
1786                         cred->encr_type = WPS_ENCR_AES;
1787                 else
1788                         cred->encr_type = WPS_ENCR_TKIP;
1789                 if (ssid->passphrase) {
1790                         cred->key_len = os_strlen(ssid->passphrase);
1791                         if (cred->key_len >= 64)
1792                                 return -1;
1793                         os_memcpy(cred->key, ssid->passphrase, cred->key_len);
1794                 } else if (ssid->psk_set) {
1795                         cred->key_len = 32;
1796                         os_memcpy(cred->key, ssid->psk, 32);
1797                 } else
1798                         return -1;
1799         } else {
1800                 cred->auth_type = WPS_AUTH_OPEN;
1801                 cred->encr_type = WPS_ENCR_NONE;
1802         }
1803
1804         return 0;
1805 }
1806
1807
1808 int wpas_wps_er_set_config(struct wpa_supplicant *wpa_s, const char *uuid,
1809                            int id)
1810 {
1811         u8 u[UUID_LEN], *use_uuid = NULL;
1812         u8 addr[ETH_ALEN], *use_addr = NULL;
1813         struct wpa_ssid *ssid;
1814         struct wps_credential cred;
1815
1816         if (uuid_str2bin(uuid, u) == 0)
1817                 use_uuid = u;
1818         else if (hwaddr_aton(uuid, addr) == 0)
1819                 use_addr = addr;
1820         else
1821                 return -1;
1822         ssid = wpa_config_get_network(wpa_s->conf, id);
1823         if (ssid == NULL || ssid->ssid == NULL)
1824                 return -1;
1825
1826         if (wpas_wps_network_to_cred(ssid, &cred) < 0)
1827                 return -1;
1828         return wps_er_set_config(wpa_s->wps_er, use_uuid, use_addr, &cred);
1829 }
1830
1831
1832 int wpas_wps_er_config(struct wpa_supplicant *wpa_s, const char *uuid,
1833                        const char *pin, struct wps_new_ap_settings *settings)
1834 {
1835         u8 u[UUID_LEN], *use_uuid = NULL;
1836         u8 addr[ETH_ALEN], *use_addr = NULL;
1837         struct wps_credential cred;
1838         size_t len;
1839
1840         if (uuid_str2bin(uuid, u) == 0)
1841                 use_uuid = u;
1842         else if (hwaddr_aton(uuid, addr) == 0)
1843                 use_addr = addr;
1844         else
1845                 return -1;
1846         if (settings->ssid_hex == NULL || settings->auth == NULL ||
1847             settings->encr == NULL || settings->key_hex == NULL)
1848                 return -1;
1849
1850         os_memset(&cred, 0, sizeof(cred));
1851         len = os_strlen(settings->ssid_hex);
1852         if ((len & 1) || len > 2 * sizeof(cred.ssid) ||
1853             hexstr2bin(settings->ssid_hex, cred.ssid, len / 2))
1854                 return -1;
1855         cred.ssid_len = len / 2;
1856
1857         len = os_strlen(settings->key_hex);
1858         if ((len & 1) || len > 2 * sizeof(cred.key) ||
1859             hexstr2bin(settings->key_hex, cred.key, len / 2))
1860                 return -1;
1861         cred.key_len = len / 2;
1862
1863         if (os_strcmp(settings->auth, "OPEN") == 0)
1864                 cred.auth_type = WPS_AUTH_OPEN;
1865         else if (os_strcmp(settings->auth, "WPAPSK") == 0)
1866                 cred.auth_type = WPS_AUTH_WPAPSK;
1867         else if (os_strcmp(settings->auth, "WPA2PSK") == 0)
1868                 cred.auth_type = WPS_AUTH_WPA2PSK;
1869         else
1870                 return -1;
1871
1872         if (os_strcmp(settings->encr, "NONE") == 0)
1873                 cred.encr_type = WPS_ENCR_NONE;
1874         else if (os_strcmp(settings->encr, "WEP") == 0)
1875                 cred.encr_type = WPS_ENCR_WEP;
1876         else if (os_strcmp(settings->encr, "TKIP") == 0)
1877                 cred.encr_type = WPS_ENCR_TKIP;
1878         else if (os_strcmp(settings->encr, "CCMP") == 0)
1879                 cred.encr_type = WPS_ENCR_AES;
1880         else
1881                 return -1;
1882
1883         return wps_er_config(wpa_s->wps_er, use_uuid, use_addr,
1884                              (const u8 *) pin, os_strlen(pin), &cred);
1885 }
1886
1887
1888 #ifdef CONFIG_WPS_NFC
1889 struct wpabuf * wpas_wps_er_nfc_config_token(struct wpa_supplicant *wpa_s,
1890                                              int ndef, const char *uuid)
1891 {
1892         struct wpabuf *ret;
1893         u8 u[UUID_LEN], *use_uuid = NULL;
1894         u8 addr[ETH_ALEN], *use_addr = NULL;
1895
1896         if (!wpa_s->wps_er)
1897                 return NULL;
1898
1899         if (uuid_str2bin(uuid, u) == 0)
1900                 use_uuid = u;
1901         else if (hwaddr_aton(uuid, addr) == 0)
1902                 use_addr = addr;
1903         else
1904                 return NULL;
1905
1906         ret = wps_er_nfc_config_token(wpa_s->wps_er, use_uuid, use_addr);
1907         if (ndef && ret) {
1908                 struct wpabuf *tmp;
1909                 tmp = ndef_build_wifi(ret);
1910                 wpabuf_free(ret);
1911                 if (tmp == NULL)
1912                         return NULL;
1913                 ret = tmp;
1914         }
1915
1916         return ret;
1917 }
1918 #endif /* CONFIG_WPS_NFC */
1919
1920
1921 static int callbacks_pending = 0;
1922
1923 static void wpas_wps_terminate_cb(void *ctx)
1924 {
1925         wpa_printf(MSG_DEBUG, "WPS ER: Terminated");
1926         if (--callbacks_pending <= 0)
1927                 eloop_terminate();
1928 }
1929 #endif /* CONFIG_WPS_ER */
1930
1931
1932 int wpas_wps_terminate_pending(struct wpa_supplicant *wpa_s)
1933 {
1934 #ifdef CONFIG_WPS_ER
1935         if (wpa_s->wps_er) {
1936                 callbacks_pending++;
1937                 wps_er_deinit(wpa_s->wps_er, wpas_wps_terminate_cb, wpa_s);
1938                 wpa_s->wps_er = NULL;
1939                 return 1;
1940         }
1941 #endif /* CONFIG_WPS_ER */
1942         return 0;
1943 }
1944
1945
1946 int wpas_wps_in_progress(struct wpa_supplicant *wpa_s)
1947 {
1948         struct wpa_ssid *ssid;
1949
1950         for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1951                 if (!ssid->disabled && ssid->key_mgmt == WPA_KEY_MGMT_WPS)
1952                         return 1;
1953         }
1954
1955         return 0;
1956 }
1957
1958
1959 void wpas_wps_update_config(struct wpa_supplicant *wpa_s)
1960 {
1961         struct wps_context *wps = wpa_s->wps;
1962
1963         if (wps == NULL)
1964                 return;
1965
1966         if (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS) {
1967                 wps->config_methods = wps_config_methods_str2bin(
1968                         wpa_s->conf->config_methods);
1969                 if ((wps->config_methods &
1970                      (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) ==
1971                     (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
1972                         wpa_printf(MSG_ERROR, "WPS: Both Label and Display "
1973                                    "config methods are not allowed at the "
1974                                    "same time");
1975                         wps->config_methods &= ~WPS_CONFIG_LABEL;
1976                 }
1977         }
1978         wps->config_methods = wps_fix_config_methods(wps->config_methods);
1979         wps->dev.config_methods = wps->config_methods;
1980
1981         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
1982                 os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type,
1983                           WPS_DEV_TYPE_LEN);
1984
1985         if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE) {
1986                 wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
1987                 os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type,
1988                           wps->dev.num_sec_dev_types * WPS_DEV_TYPE_LEN);
1989         }
1990
1991         if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION)
1992                 wpas_wps_set_vendor_ext_m1(wpa_s, wps);
1993
1994         if (wpa_s->conf->changed_parameters & CFG_CHANGED_OS_VERSION)
1995                 wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
1996
1997         if (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID)
1998                 wpas_wps_set_uuid(wpa_s, wps);
1999
2000         if (wpa_s->conf->changed_parameters &
2001             (CFG_CHANGED_DEVICE_NAME | CFG_CHANGED_WPS_STRING)) {
2002                 /* Update pointers to make sure they refer current values */
2003                 wps->dev.device_name = wpa_s->conf->device_name;
2004                 wps->dev.manufacturer = wpa_s->conf->manufacturer;
2005                 wps->dev.model_name = wpa_s->conf->model_name;
2006                 wps->dev.model_number = wpa_s->conf->model_number;
2007                 wps->dev.serial_number = wpa_s->conf->serial_number;
2008         }
2009 }
2010
2011
2012 #ifdef CONFIG_WPS_NFC
2013
2014 #ifdef CONFIG_WPS_ER
2015 static struct wpabuf *
2016 wpas_wps_network_config_token(struct wpa_supplicant *wpa_s, int ndef,
2017                               struct wpa_ssid *ssid)
2018 {
2019         struct wpabuf *ret;
2020         struct wps_credential cred;
2021
2022         if (wpas_wps_network_to_cred(ssid, &cred) < 0)
2023                 return NULL;
2024
2025         ret = wps_er_config_token_from_cred(wpa_s->wps, &cred);
2026
2027         if (ndef && ret) {
2028                 struct wpabuf *tmp;
2029                 tmp = ndef_build_wifi(ret);
2030                 wpabuf_free(ret);
2031                 if (tmp == NULL)
2032                         return NULL;
2033                 ret = tmp;
2034         }
2035
2036         return ret;
2037 }
2038 #endif /* CONFIG_WPS_ER */
2039
2040
2041 struct wpabuf * wpas_wps_nfc_config_token(struct wpa_supplicant *wpa_s,
2042                                           int ndef, const char *id_str)
2043 {
2044 #ifdef CONFIG_WPS_ER
2045         if (id_str) {
2046                 int id;
2047                 char *end = NULL;
2048                 struct wpa_ssid *ssid;
2049
2050                 id = strtol(id_str, &end, 10);
2051                 if (end && *end)
2052                         return NULL;
2053
2054                 ssid = wpa_config_get_network(wpa_s->conf, id);
2055                 if (ssid == NULL)
2056                         return NULL;
2057                 return wpas_wps_network_config_token(wpa_s, ndef, ssid);
2058         }
2059 #endif /* CONFIG_WPS_ER */
2060 #ifdef CONFIG_AP
2061         if (wpa_s->ap_iface)
2062                 return wpas_ap_wps_nfc_config_token(wpa_s, ndef);
2063 #endif /* CONFIG_AP */
2064         return NULL;
2065 }
2066
2067
2068 struct wpabuf * wpas_wps_nfc_token(struct wpa_supplicant *wpa_s, int ndef)
2069 {
2070         if (wpa_s->conf->wps_nfc_pw_from_config) {
2071                 return wps_nfc_token_build(ndef,
2072                                            wpa_s->conf->wps_nfc_dev_pw_id,
2073                                            wpa_s->conf->wps_nfc_dh_pubkey,
2074                                            wpa_s->conf->wps_nfc_dev_pw);
2075         }
2076
2077         return wps_nfc_token_gen(ndef, &wpa_s->conf->wps_nfc_dev_pw_id,
2078                                  &wpa_s->conf->wps_nfc_dh_pubkey,
2079                                  &wpa_s->conf->wps_nfc_dh_privkey,
2080                                  &wpa_s->conf->wps_nfc_dev_pw);
2081 }
2082
2083
2084 int wpas_wps_start_nfc(struct wpa_supplicant *wpa_s, const u8 *bssid)
2085 {
2086         struct wps_context *wps = wpa_s->wps;
2087         char pw[32 * 2 + 1];
2088
2089         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL ||
2090             wpa_s->conf->wps_nfc_dh_privkey == NULL ||
2091             wpa_s->conf->wps_nfc_dev_pw == NULL)
2092                 return -1;
2093
2094         dh5_free(wps->dh_ctx);
2095         wpabuf_free(wps->dh_pubkey);
2096         wpabuf_free(wps->dh_privkey);
2097         wps->dh_privkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
2098         wps->dh_pubkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
2099         if (wps->dh_privkey == NULL || wps->dh_pubkey == NULL) {
2100                 wps->dh_ctx = NULL;
2101                 wpabuf_free(wps->dh_pubkey);
2102                 wps->dh_pubkey = NULL;
2103                 wpabuf_free(wps->dh_privkey);
2104                 wps->dh_privkey = NULL;
2105                 return -1;
2106         }
2107         wps->dh_ctx = dh5_init_fixed(wps->dh_privkey, wps->dh_pubkey);
2108         if (wps->dh_ctx == NULL) {
2109                 wpabuf_free(wps->dh_pubkey);
2110                 wps->dh_pubkey = NULL;
2111                 wpabuf_free(wps->dh_privkey);
2112                 wps->dh_privkey = NULL;
2113                 return -1;
2114         }
2115
2116         wpa_snprintf_hex_uppercase(pw, sizeof(pw),
2117                                    wpabuf_head(wpa_s->conf->wps_nfc_dev_pw),
2118                                    wpabuf_len(wpa_s->conf->wps_nfc_dev_pw));
2119         return wpas_wps_start_pin(wpa_s, bssid, pw, 0,
2120                                   wpa_s->conf->wps_nfc_dev_pw_id);
2121 }
2122
2123
2124 static int wpas_wps_use_cred(struct wpa_supplicant *wpa_s,
2125                              struct wps_parse_attr *attr)
2126 {
2127         wpa_s->wps_ap_channel = 0;
2128
2129         /*
2130          * Disable existing networks temporarily to allow the newly learned
2131          * credential to be preferred. Enable the temporarily disabled networks
2132          * after 10 seconds.
2133          */
2134         wpas_wps_temp_disable(wpa_s, NULL);
2135         eloop_register_timeout(10, 0, wpas_wps_reenable_networks_cb, wpa_s,
2136                                NULL);
2137
2138         if (wps_oob_use_cred(wpa_s->wps, attr) < 0)
2139                 return -1;
2140
2141         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
2142                 return 0;
2143
2144         wpa_printf(MSG_DEBUG, "WPS: Request reconnection with new network "
2145                    "based on the received credential added");
2146         wpa_s->normal_scans = 0;
2147         wpa_supplicant_reinit_autoscan(wpa_s);
2148         if (wpa_s->wps_ap_channel) {
2149                 u16 chan = wpa_s->wps_ap_channel;
2150                 int freq = 0;
2151
2152                 if (chan >= 1 && chan <= 13)
2153                         freq = 2407 + 5 * chan;
2154                 else if (chan == 14)
2155                         freq = 2484;
2156                 else if (chan >= 30)
2157                         freq = 5000 + 5 * chan;
2158
2159                 if (freq) {
2160                         wpa_printf(MSG_DEBUG, "WPS: Credential indicated "
2161                                    "AP channel %u -> %u MHz", chan, freq);
2162                         wpa_s->after_wps = 5;
2163                         wpa_s->wps_freq = freq;
2164                 }
2165         }
2166         wpa_s->disconnected = 0;
2167         wpa_s->reassociate = 1;
2168         wpa_supplicant_req_scan(wpa_s, 0, 0);
2169
2170         return 0;
2171 }
2172
2173
2174 #ifdef CONFIG_WPS_ER
2175 static int wpas_wps_add_nfc_password_token(struct wpa_supplicant *wpa_s,
2176                                            struct wps_parse_attr *attr)
2177 {
2178         return wps_registrar_add_nfc_password_token(
2179                 wpa_s->wps->registrar, attr->oob_dev_password,
2180                 attr->oob_dev_password_len);
2181 }
2182 #endif /* CONFIG_WPS_ER */
2183
2184
2185 static int wpas_wps_nfc_tag_process(struct wpa_supplicant *wpa_s,
2186                                     const struct wpabuf *wps)
2187 {
2188         struct wps_parse_attr attr;
2189
2190         wpa_hexdump_buf(MSG_DEBUG, "WPS: Received NFC tag payload", wps);
2191
2192         if (wps_parse_msg(wps, &attr)) {
2193                 wpa_printf(MSG_DEBUG, "WPS: Ignore invalid data from NFC tag");
2194                 return -1;
2195         }
2196
2197         if (attr.num_cred)
2198                 return wpas_wps_use_cred(wpa_s, &attr);
2199
2200 #ifdef CONFIG_WPS_ER
2201         if (attr.oob_dev_password)
2202                 return wpas_wps_add_nfc_password_token(wpa_s, &attr);
2203 #endif /* CONFIG_WPS_ER */
2204
2205         wpa_printf(MSG_DEBUG, "WPS: Ignore unrecognized NFC tag");
2206         return -1;
2207 }
2208
2209
2210 int wpas_wps_nfc_tag_read(struct wpa_supplicant *wpa_s,
2211                           const struct wpabuf *data)
2212 {
2213         const struct wpabuf *wps = data;
2214         struct wpabuf *tmp = NULL;
2215         int ret;
2216
2217         if (wpabuf_len(data) < 4)
2218                 return -1;
2219
2220         if (*wpabuf_head_u8(data) != 0x10) {
2221                 /* Assume this contains full NDEF record */
2222                 tmp = ndef_parse_wifi(data);
2223                 if (tmp == NULL) {
2224                         wpa_printf(MSG_DEBUG, "WPS: Could not parse NDEF");
2225                         return -1;
2226                 }
2227                 wps = tmp;
2228         }
2229
2230         ret = wpas_wps_nfc_tag_process(wpa_s, wps);
2231         wpabuf_free(tmp);
2232         return ret;
2233 }
2234
2235
2236 struct wpabuf * wpas_wps_nfc_handover_req(struct wpa_supplicant *wpa_s, int cr)
2237 {
2238         if (cr)
2239                 return ndef_build_wifi_hc(1);
2240         return ndef_build_wifi_hr();
2241 }
2242
2243
2244 #ifdef CONFIG_WPS_NFC
2245 struct wpabuf * wpas_wps_er_nfc_handover_sel(struct wpa_supplicant *wpa_s,
2246                                              int ndef, const char *uuid)
2247 {
2248 #ifdef CONFIG_WPS_ER
2249         struct wpabuf *ret;
2250         u8 u[UUID_LEN], *use_uuid = NULL;
2251         u8 addr[ETH_ALEN], *use_addr = NULL;
2252
2253         if (!wpa_s->wps_er)
2254                 return NULL;
2255
2256         if (uuid == NULL)
2257                 return NULL;
2258         if (uuid_str2bin(uuid, u) == 0)
2259                 use_uuid = u;
2260         else if (hwaddr_aton(uuid, addr) == 0)
2261                 use_addr = addr;
2262         else
2263                 return NULL;
2264
2265         /*
2266          * Handover Select carrier record for WPS uses the same format as
2267          * configuration token.
2268          */
2269         ret = wps_er_nfc_config_token(wpa_s->wps_er, use_uuid, use_addr);
2270         if (ndef && ret) {
2271                 struct wpabuf *tmp;
2272                 tmp = ndef_build_wifi(ret);
2273                 wpabuf_free(ret);
2274                 if (tmp == NULL)
2275                         return NULL;
2276                 ret = tmp;
2277         }
2278
2279         return ret;
2280 #else /* CONFIG_WPS_ER */
2281         return NULL;
2282 #endif /* CONFIG_WPS_ER */
2283 }
2284 #endif /* CONFIG_WPS_NFC */
2285
2286
2287 struct wpabuf * wpas_wps_nfc_handover_sel(struct wpa_supplicant *wpa_s,
2288                                           int ndef, int cr, const char *uuid)
2289 {
2290         struct wpabuf *ret;
2291         if (!cr)
2292                 return NULL;
2293         ret = wpas_ap_wps_nfc_handover_sel(wpa_s, ndef);
2294         if (ret)
2295                 return ret;
2296         return wpas_wps_er_nfc_handover_sel(wpa_s, ndef, uuid);
2297 }
2298
2299
2300 int wpas_wps_nfc_rx_handover_req(struct wpa_supplicant *wpa_s,
2301                                  const struct wpabuf *data)
2302 {
2303         /* TODO */
2304         return -1;
2305 }
2306
2307
2308 int wpas_wps_nfc_rx_handover_sel(struct wpa_supplicant *wpa_s,
2309                                  const struct wpabuf *data)
2310 {
2311         struct wpabuf *wps;
2312         int ret;
2313
2314         wps = ndef_parse_wifi(data);
2315         if (wps == NULL)
2316                 return -1;
2317         wpa_printf(MSG_DEBUG, "WPS: Received application/vnd.wfa.wsc "
2318                    "payload from NFC connection handover");
2319         wpa_hexdump_buf_key(MSG_DEBUG, "WPS: NFC payload", wps);
2320         ret = wpas_wps_nfc_tag_process(wpa_s, wps);
2321         wpabuf_free(wps);
2322
2323         return ret;
2324 }
2325
2326
2327 int wpas_wps_nfc_report_handover(struct wpa_supplicant *wpa_s,
2328                                  const struct wpabuf *req,
2329                                  const struct wpabuf *sel)
2330 {
2331         wpa_printf(MSG_DEBUG, "NFC: WPS connection handover reported");
2332         wpa_hexdump_buf_key(MSG_DEBUG, "WPS: Carrier record in request", req);
2333         wpa_hexdump_buf_key(MSG_DEBUG, "WPS: Carrier record in select", sel);
2334         return wpas_wps_nfc_rx_handover_sel(wpa_s, sel);
2335 }
2336
2337 #endif /* CONFIG_WPS_NFC */
2338
2339
2340 extern int wpa_debug_level;
2341
2342 static void wpas_wps_dump_ap_info(struct wpa_supplicant *wpa_s)
2343 {
2344         size_t i;
2345         struct os_time now;
2346
2347         if (wpa_debug_level > MSG_DEBUG)
2348                 return;
2349
2350         if (wpa_s->wps_ap == NULL)
2351                 return;
2352
2353         os_get_time(&now);
2354
2355         for (i = 0; i < wpa_s->num_wps_ap; i++) {
2356                 struct wps_ap_info *ap = &wpa_s->wps_ap[i];
2357                 struct wpa_blacklist *e = wpa_blacklist_get(wpa_s, ap->bssid);
2358
2359                 wpa_printf(MSG_DEBUG, "WPS: AP[%d] " MACSTR " type=%d "
2360                            "tries=%d last_attempt=%d sec ago blacklist=%d",
2361                            (int) i, MAC2STR(ap->bssid), ap->type, ap->tries,
2362                            ap->last_attempt.sec > 0 ?
2363                            (int) now.sec - (int) ap->last_attempt.sec : -1,
2364                            e ? e->count : 0);
2365         }
2366 }
2367
2368
2369 static struct wps_ap_info * wpas_wps_get_ap_info(struct wpa_supplicant *wpa_s,
2370                                                  const u8 *bssid)
2371 {
2372         size_t i;
2373
2374         if (wpa_s->wps_ap == NULL)
2375                 return NULL;
2376
2377         for (i = 0; i < wpa_s->num_wps_ap; i++) {
2378                 struct wps_ap_info *ap = &wpa_s->wps_ap[i];
2379                 if (os_memcmp(ap->bssid, bssid, ETH_ALEN) == 0)
2380                         return ap;
2381         }
2382
2383         return NULL;
2384 }
2385
2386
2387 static void wpas_wps_update_ap_info_bss(struct wpa_supplicant *wpa_s,
2388                                         struct wpa_scan_res *res)
2389 {
2390         struct wpabuf *wps;
2391         enum wps_ap_info_type type;
2392         struct wps_ap_info *ap;
2393         int r;
2394
2395         if (wpa_scan_get_vendor_ie(res, WPS_IE_VENDOR_TYPE) == NULL)
2396                 return;
2397
2398         wps = wpa_scan_get_vendor_ie_multi(res, WPS_IE_VENDOR_TYPE);
2399         if (wps == NULL)
2400                 return;
2401
2402         r = wps_is_addr_authorized(wps, wpa_s->own_addr, 1);
2403         if (r == 2)
2404                 type = WPS_AP_SEL_REG_OUR;
2405         else if (r == 1)
2406                 type = WPS_AP_SEL_REG;
2407         else
2408                 type = WPS_AP_NOT_SEL_REG;
2409
2410         wpabuf_free(wps);
2411
2412         ap = wpas_wps_get_ap_info(wpa_s, res->bssid);
2413         if (ap) {
2414                 if (ap->type != type) {
2415                         wpa_printf(MSG_DEBUG, "WPS: AP " MACSTR
2416                                    " changed type %d -> %d",
2417                                    MAC2STR(res->bssid), ap->type, type);
2418                         ap->type = type;
2419                         if (type != WPS_AP_NOT_SEL_REG)
2420                                 wpa_blacklist_del(wpa_s, ap->bssid);
2421                 }
2422                 return;
2423         }
2424
2425         ap = os_realloc_array(wpa_s->wps_ap, wpa_s->num_wps_ap + 1,
2426                               sizeof(struct wps_ap_info));
2427         if (ap == NULL)
2428                 return;
2429
2430         wpa_s->wps_ap = ap;
2431         ap = &wpa_s->wps_ap[wpa_s->num_wps_ap];
2432         wpa_s->num_wps_ap++;
2433
2434         os_memset(ap, 0, sizeof(*ap));
2435         os_memcpy(ap->bssid, res->bssid, ETH_ALEN);
2436         ap->type = type;
2437         wpa_printf(MSG_DEBUG, "WPS: AP " MACSTR " type %d added",
2438                    MAC2STR(ap->bssid), ap->type);
2439 }
2440
2441
2442 void wpas_wps_update_ap_info(struct wpa_supplicant *wpa_s,
2443                              struct wpa_scan_results *scan_res)
2444 {
2445         size_t i;
2446
2447         for (i = 0; i < scan_res->num; i++)
2448                 wpas_wps_update_ap_info_bss(wpa_s, scan_res->res[i]);
2449
2450         wpas_wps_dump_ap_info(wpa_s);
2451 }
2452
2453
2454 void wpas_wps_notify_assoc(struct wpa_supplicant *wpa_s, const u8 *bssid)
2455 {
2456         struct wps_ap_info *ap;
2457         if (!wpa_s->wps_ap_iter)
2458                 return;
2459         ap = wpas_wps_get_ap_info(wpa_s, bssid);
2460         if (ap == NULL)
2461                 return;
2462         ap->tries++;
2463         os_get_time(&ap->last_attempt);
2464 }