contrib/wpa/wpa_supplicant/wps_supplicant.c

   1 /*
   2  * wpa_supplicant / WPS integration
   3  * Copyright (c) 2008-2012, 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                 wpa_printf(MSG_DEBUG, "WPS: Network configuration replaced - "
  88                            "try to associate with the received credential "
  89                            "(freq=%u)", freq);
  90                 wpa_supplicant_deauthenticate(wpa_s,
  91                                               WLAN_REASON_DEAUTH_LEAVING);
  92                 if (disabled) {
  93                         wpa_printf(MSG_DEBUG, "WPS: Current network is "
  94                                    "disabled - wait for user to enable");
  95                         return 1;
  96                 }
  97                 wpa_s->after_wps = 5;
  98                 wpa_s->wps_freq = freq;
  99                 wpa_s->normal_scans = 0;
 100                 wpa_s->reassociate = 1;
 101                 wpa_supplicant_req_scan(wpa_s, 0, 0);
 102                 return 1;
 103         }
 104
 105         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && wpa_s->current_ssid) {
 106                 wpa_printf(MSG_DEBUG, "WPS: Registration completed - waiting "
 107                            "for external credential processing");
 108                 wpas_clear_wps(wpa_s);
 109                 wpa_supplicant_deauthenticate(wpa_s,
 110                                               WLAN_REASON_DEAUTH_LEAVING);
 111                 return 1;
 112         }
 113
 114         return 0;
 115 }
 116
 117
 118 static void wpas_wps_security_workaround(struct wpa_supplicant *wpa_s,
 119                                          struct wpa_ssid *ssid,
 120                                          const struct wps_credential *cred)
 121 {
 122         struct wpa_driver_capa capa;
 123         struct wpa_bss *bss;
 124         const u8 *ie;
 125         struct wpa_ie_data adv;
 126         int wpa2 = 0, ccmp = 0;
 127
 128         /*
 129          * Many existing WPS APs do not know how to negotiate WPA2 or CCMP in
 130          * case they are configured for mixed mode operation (WPA+WPA2 and
 131          * TKIP+CCMP). Try to use scan results to figure out whether the AP
 132          * actually supports stronger security and select that if the client
 133          * has support for it, too.
 134          */
 135
 136         if (wpa_drv_get_capa(wpa_s, &capa))
 137                 return; /* Unknown what driver supports */
 138
 139         if (ssid->ssid == NULL)
 140                 return;
 141         bss = wpa_bss_get(wpa_s, cred->mac_addr, ssid->ssid, ssid->ssid_len);
 142         if (bss == NULL) {
 143                 wpa_printf(MSG_DEBUG, "WPS: The AP was not found from BSS "
 144                            "table - use credential as-is");
 145                 return;
 146         }
 147
 148         wpa_printf(MSG_DEBUG, "WPS: AP found from BSS table");
 149
 150         ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
 151         if (ie && wpa_parse_wpa_ie(ie, 2 + ie[1], &adv) == 0) {
 152                 wpa2 = 1;
 153                 if (adv.pairwise_cipher & WPA_CIPHER_CCMP)
 154                         ccmp = 1;
 155         } else {
 156                 ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 157                 if (ie && wpa_parse_wpa_ie(ie, 2 + ie[1], &adv) == 0 &&
 158                     adv.pairwise_cipher & WPA_CIPHER_CCMP)
 159                         ccmp = 1;
 160         }
 161
 162         if (ie == NULL && (ssid->proto & WPA_PROTO_WPA) &&
 163             (ssid->pairwise_cipher & WPA_CIPHER_TKIP)) {
 164                 /*
 165                  * TODO: This could be the initial AP configuration and the
 166                  * Beacon contents could change shortly. Should request a new
 167                  * scan and delay addition of the network until the updated
 168                  * scan results are available.
 169                  */
 170                 wpa_printf(MSG_DEBUG, "WPS: The AP did not yet advertise WPA "
 171                            "support - use credential as-is");
 172                 return;
 173         }
 174
 175         if (ccmp && !(ssid->pairwise_cipher & WPA_CIPHER_CCMP) &&
 176             (ssid->pairwise_cipher & WPA_CIPHER_TKIP) &&
 177             (capa.key_mgmt & WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK)) {
 178                 wpa_printf(MSG_DEBUG, "WPS: Add CCMP into the credential "
 179                            "based on scan results");
 180                 if (wpa_s->conf->ap_scan == 1)
 181                         ssid->pairwise_cipher |= WPA_CIPHER_CCMP;
 182                 else
 183                         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
 184         }
 185
 186         if (wpa2 && !(ssid->proto & WPA_PROTO_RSN) &&
 187             (ssid->proto & WPA_PROTO_WPA) &&
 188             (capa.enc & WPA_DRIVER_CAPA_ENC_CCMP)) {
 189                 wpa_printf(MSG_DEBUG, "WPS: Add WPA2 into the credential "
 190                            "based on scan results");
 191                 if (wpa_s->conf->ap_scan == 1)
 192                         ssid->proto |= WPA_PROTO_RSN;
 193                 else
 194                         ssid->proto = WPA_PROTO_RSN;
 195         }
 196 }
 197
 198
 199 static int wpa_supplicant_wps_cred(void *ctx,
 200                                    const struct wps_credential *cred)
 201 {
 202         struct wpa_supplicant *wpa_s = ctx;
 203         struct wpa_ssid *ssid = wpa_s->current_ssid;
 204         u8 key_idx = 0;
 205         u16 auth_type;
 206 #ifdef CONFIG_WPS_REG_DISABLE_OPEN
 207         int registrar = 0;
 208 #endif /* CONFIG_WPS_REG_DISABLE_OPEN */
 209
 210         if ((wpa_s->conf->wps_cred_processing == 1 ||
 211              wpa_s->conf->wps_cred_processing == 2) && cred->cred_attr) {
 212                 size_t blen = cred->cred_attr_len * 2 + 1;
 213                 char *buf = os_malloc(blen);
 214                 if (buf) {
 215                         wpa_snprintf_hex(buf, blen,
 216                                          cred->cred_attr, cred->cred_attr_len);
 217                         wpa_msg(wpa_s, MSG_INFO, "%s%s",
 218                                 WPS_EVENT_CRED_RECEIVED, buf);
 219                         os_free(buf);
 220                 }
 221
 222                 wpas_notify_wps_credential(wpa_s, cred);
 223         } else
 224                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_CRED_RECEIVED);
 225
 226         wpa_hexdump_key(MSG_DEBUG, "WPS: Received Credential attribute",
 227                         cred->cred_attr, cred->cred_attr_len);
 228
 229         if (wpa_s->conf->wps_cred_processing == 1)
 230                 return 0;
 231
 232         wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID", cred->ssid, cred->ssid_len);
 233         wpa_printf(MSG_DEBUG, "WPS: Authentication Type 0x%x",
 234                    cred->auth_type);
 235         wpa_printf(MSG_DEBUG, "WPS: Encryption Type 0x%x", cred->encr_type);
 236         wpa_printf(MSG_DEBUG, "WPS: Network Key Index %d", cred->key_idx);
 237         wpa_hexdump_key(MSG_DEBUG, "WPS: Network Key",
 238                         cred->key, cred->key_len);
 239         wpa_printf(MSG_DEBUG, "WPS: MAC Address " MACSTR,
 240                    MAC2STR(cred->mac_addr));
 241
 242         auth_type = cred->auth_type;
 243         if (auth_type == (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) {
 244                 wpa_printf(MSG_DEBUG, "WPS: Workaround - convert mixed-mode "
 245                            "auth_type into WPA2PSK");
 246                 auth_type = WPS_AUTH_WPA2PSK;
 247         }
 248
 249         if (auth_type != WPS_AUTH_OPEN &&
 250             auth_type != WPS_AUTH_SHARED &&
 251             auth_type != WPS_AUTH_WPAPSK &&
 252             auth_type != WPS_AUTH_WPA2PSK) {
 253                 wpa_printf(MSG_DEBUG, "WPS: Ignored credentials for "
 254                            "unsupported authentication type 0x%x",
 255                            auth_type);
 256                 return 0;
 257         }
 258
 259         if (auth_type == WPS_AUTH_WPAPSK || auth_type == WPS_AUTH_WPA2PSK) {
 260                 if (cred->key_len < 8 || cred->key_len > 2 * PMK_LEN) {
 261                         wpa_printf(MSG_ERROR, "WPS: Reject PSK credential with "
 262                                    "invalid Network Key length %lu",
 263                                    (unsigned long) cred->key_len);
 264                         return -1;
 265                 }
 266         }
 267
 268         if (ssid && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
 269                 wpa_printf(MSG_DEBUG, "WPS: Replace WPS network block based "
 270                            "on the received credential");
 271 #ifdef CONFIG_WPS_REG_DISABLE_OPEN
 272                 if (ssid->eap.identity &&
 273                     ssid->eap.identity_len == WSC_ID_REGISTRAR_LEN &&
 274                     os_memcmp(ssid->eap.identity, WSC_ID_REGISTRAR,
 275                               WSC_ID_REGISTRAR_LEN) == 0)
 276                         registrar = 1;
 277 #endif /* CONFIG_WPS_REG_DISABLE_OPEN */
 278                 os_free(ssid->eap.identity);
 279                 ssid->eap.identity = NULL;
 280                 ssid->eap.identity_len = 0;
 281                 os_free(ssid->eap.phase1);
 282                 ssid->eap.phase1 = NULL;
 283                 os_free(ssid->eap.eap_methods);
 284                 ssid->eap.eap_methods = NULL;
 285                 if (!ssid->p2p_group) {
 286                         ssid->temporary = 0;
 287                         ssid->bssid_set = 0;
 288                 }
 289                 ssid->disabled_until.sec = 0;
 290                 ssid->disabled_until.usec = 0;
 291                 ssid->auth_failures = 0;
 292         } else {
 293                 wpa_printf(MSG_DEBUG, "WPS: Create a new network based on the "
 294                            "received credential");
 295                 ssid = wpa_config_add_network(wpa_s->conf);
 296                 if (ssid == NULL)
 297                         return -1;
 298                 wpas_notify_network_added(wpa_s, ssid);
 299         }
 300
 301         wpa_config_set_network_defaults(ssid);
 302
 303         os_free(ssid->ssid);
 304         ssid->ssid = os_malloc(cred->ssid_len);
 305         if (ssid->ssid) {
 306                 os_memcpy(ssid->ssid, cred->ssid, cred->ssid_len);
 307                 ssid->ssid_len = cred->ssid_len;
 308         }
 309
 310         switch (cred->encr_type) {
 311         case WPS_ENCR_NONE:
 312                 break;
 313         case WPS_ENCR_WEP:
 314                 if (cred->key_len <= 0)
 315                         break;
 316                 if (cred->key_len != 5 && cred->key_len != 13 &&
 317                     cred->key_len != 10 && cred->key_len != 26) {
 318                         wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key length "
 319                                    "%lu", (unsigned long) cred->key_len);
 320                         return -1;
 321                 }
 322                 if (cred->key_idx > NUM_WEP_KEYS) {
 323                         wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key index %d",
 324                                    cred->key_idx);
 325                         return -1;
 326                 }
 327                 if (cred->key_idx)
 328                         key_idx = cred->key_idx - 1;
 329                 if (cred->key_len == 10 || cred->key_len == 26) {
 330                         if (hexstr2bin((char *) cred->key,
 331                                        ssid->wep_key[key_idx],
 332                                        cred->key_len / 2) < 0) {
 333                                 wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key "
 334                                            "%d", key_idx);
 335                                 return -1;
 336                         }
 337                         ssid->wep_key_len[key_idx] = cred->key_len / 2;
 338                 } else {
 339                         os_memcpy(ssid->wep_key[key_idx], cred->key,
 340                                   cred->key_len);
 341                         ssid->wep_key_len[key_idx] = cred->key_len;
 342                 }
 343                 ssid->wep_tx_keyidx = key_idx;
 344                 break;
 345         case WPS_ENCR_TKIP:
 346                 ssid->pairwise_cipher = WPA_CIPHER_TKIP;
 347                 break;
 348         case WPS_ENCR_AES:
 349                 ssid->pairwise_cipher = WPA_CIPHER_CCMP;
 350                 break;
 351         }
 352
 353         switch (auth_type) {
 354         case WPS_AUTH_OPEN:
 355                 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 356                 ssid->key_mgmt = WPA_KEY_MGMT_NONE;
 357                 ssid->proto = 0;
 358 #ifdef CONFIG_WPS_REG_DISABLE_OPEN
 359                 if (registrar) {
 360                         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OPEN_NETWORK
 361                                 "id=%d - Credentials for an open "
 362                                 "network disabled by default - use "
 363                                 "'select_network %d' to enable",
 364                                 ssid->id, ssid->id);
 365                         ssid->disabled = 1;
 366                 }
 367 #endif /* CONFIG_WPS_REG_DISABLE_OPEN */
 368                 break;
 369         case WPS_AUTH_SHARED:
 370                 ssid->auth_alg = WPA_AUTH_ALG_SHARED;
 371                 ssid->key_mgmt = WPA_KEY_MGMT_NONE;
 372                 ssid->proto = 0;
 373                 break;
 374         case WPS_AUTH_WPAPSK:
 375                 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 376                 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
 377                 ssid->proto = WPA_PROTO_WPA;
 378                 break;
 379         case WPS_AUTH_WPA2PSK:
 380                 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 381                 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
 382                 ssid->proto = WPA_PROTO_RSN;
 383                 break;
 384         }
 385
 386         if (ssid->key_mgmt == WPA_KEY_MGMT_PSK) {
 387                 if (cred->key_len == 2 * PMK_LEN) {
 388                         if (hexstr2bin((const char *) cred->key, ssid->psk,
 389                                        PMK_LEN)) {
 390                                 wpa_printf(MSG_ERROR, "WPS: Invalid Network "
 391                                            "Key");
 392                                 return -1;
 393                         }
 394                         ssid->psk_set = 1;
 395                         ssid->export_keys = 1;
 396                 } else if (cred->key_len >= 8 && cred->key_len < 2 * PMK_LEN) {
 397                         os_free(ssid->passphrase);
 398                         ssid->passphrase = os_malloc(cred->key_len + 1);
 399                         if (ssid->passphrase == NULL)
 400                                 return -1;
 401                         os_memcpy(ssid->passphrase, cred->key, cred->key_len);
 402                         ssid->passphrase[cred->key_len] = '\0';
 403                         wpa_config_update_psk(ssid);
 404                         ssid->export_keys = 1;
 405                 } else {
 406                         wpa_printf(MSG_ERROR, "WPS: Invalid Network Key "
 407                                    "length %lu",
 408                                    (unsigned long) cred->key_len);
 409                         return -1;
 410                 }
 411         }
 412
 413         wpas_wps_security_workaround(wpa_s, ssid, cred);
 414
 415         if (cred->ap_channel)
 416                 wpa_s->wps_ap_channel = cred->ap_channel;
 417
 418 #ifndef CONFIG_NO_CONFIG_WRITE
 419         if (wpa_s->conf->update_config &&
 420             wpa_config_write(wpa_s->confname, wpa_s->conf)) {
 421                 wpa_printf(MSG_DEBUG, "WPS: Failed to update configuration");
 422                 return -1;
 423         }
 424 #endif /* CONFIG_NO_CONFIG_WRITE */
 425
 426         /*
 427          * Optimize the post-WPS scan based on the channel used during
 428          * the provisioning in case EAP-Failure is not received.
 429          */
 430         wpa_s->after_wps = 5;
 431         wpa_s->wps_freq = wpa_s->assoc_freq;
 432
 433         return 0;
 434 }
 435
 436
 437 #ifdef CONFIG_P2P
 438 static void wpas_wps_pbc_overlap_cb(void *eloop_ctx, void *timeout_ctx)
 439 {
 440         struct wpa_supplicant *wpa_s = eloop_ctx;
 441         wpas_p2p_notif_pbc_overlap(wpa_s);
 442 }
 443 #endif /* CONFIG_P2P */
 444
 445
 446 static void wpa_supplicant_wps_event_m2d(struct wpa_supplicant *wpa_s,
 447                                          struct wps_event_m2d *m2d)
 448 {
 449         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_M2D
 450                 "dev_password_id=%d config_error=%d",
 451                 m2d->dev_password_id, m2d->config_error);
 452         wpas_notify_wps_event_m2d(wpa_s, m2d);
 453 #ifdef CONFIG_P2P
 454         if (wpa_s->parent && wpa_s->parent != wpa_s) {
 455                 wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_M2D
 456                         "dev_password_id=%d config_error=%d",
 457                         m2d->dev_password_id, m2d->config_error);
 458         }
 459         if (m2d->config_error == WPS_CFG_MULTIPLE_PBC_DETECTED) {
 460                 /*
 461                  * Notify P2P from eloop timeout to avoid issues with the
 462                  * interface getting removed while processing a message.
 463                  */
 464                 eloop_register_timeout(0, 0, wpas_wps_pbc_overlap_cb, wpa_s,
 465                                        NULL);
 466         }
 467 #endif /* CONFIG_P2P */
 468 }
 469
 470
 471 static const char * wps_event_fail_reason[NUM_WPS_EI_VALUES] = {
 472         "No Error", /* WPS_EI_NO_ERROR */
 473         "TKIP Only Prohibited", /* WPS_EI_SECURITY_TKIP_ONLY_PROHIBITED */
 474         "WEP Prohibited" /* WPS_EI_SECURITY_WEP_PROHIBITED */
 475 };
 476
 477 static void wpa_supplicant_wps_event_fail(struct wpa_supplicant *wpa_s,
 478                                           struct wps_event_fail *fail)
 479 {
 480         if (fail->error_indication > 0 &&
 481             fail->error_indication < NUM_WPS_EI_VALUES) {
 482                 wpa_msg(wpa_s, MSG_INFO,
 483                         WPS_EVENT_FAIL "msg=%d config_error=%d reason=%d (%s)",
 484                         fail->msg, fail->config_error, fail->error_indication,
 485                         wps_event_fail_reason[fail->error_indication]);
 486                 if (wpa_s->parent && wpa_s->parent != wpa_s)
 487                         wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_FAIL
 488                                 "msg=%d config_error=%d reason=%d (%s)",
 489                                 fail->msg, fail->config_error,
 490                                 fail->error_indication,
 491                                 wps_event_fail_reason[fail->error_indication]);
 492         } else {
 493                 wpa_msg(wpa_s, MSG_INFO,
 494                         WPS_EVENT_FAIL "msg=%d config_error=%d",
 495                         fail->msg, fail->config_error);
 496                 if (wpa_s->parent && wpa_s->parent != wpa_s)
 497                         wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_FAIL
 498                                 "msg=%d config_error=%d",
 499                                 fail->msg, fail->config_error);
 500         }
 501         wpas_clear_wps(wpa_s);
 502         wpas_notify_wps_event_fail(wpa_s, fail);
 503 #ifdef CONFIG_P2P
 504         wpas_p2p_wps_failed(wpa_s, fail);
 505 #endif /* CONFIG_P2P */
 506 }
 507
 508
 509 static void wpas_wps_reenable_networks_cb(void *eloop_ctx, void *timeout_ctx);
 510
 511 static void wpas_wps_reenable_networks(struct wpa_supplicant *wpa_s)
 512 {
 513         struct wpa_ssid *ssid;
 514         int changed = 0;
 515
 516         eloop_cancel_timeout(wpas_wps_reenable_networks_cb, wpa_s, NULL);
 517
 518         for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
 519                 if (ssid->disabled_for_connect && ssid->disabled) {
 520                         ssid->disabled_for_connect = 0;
 521                         ssid->disabled = 0;
 522                         wpas_notify_network_enabled_changed(wpa_s, ssid);
 523                         changed++;
 524                 }
 525         }
 526
 527         if (changed) {
 528 #ifndef CONFIG_NO_CONFIG_WRITE
 529                 if (wpa_s->conf->update_config &&
 530                     wpa_config_write(wpa_s->confname, wpa_s->conf)) {
 531                         wpa_printf(MSG_DEBUG, "WPS: Failed to update "
 532                                    "configuration");
 533                 }
 534 #endif /* CONFIG_NO_CONFIG_WRITE */
 535         }
 536 }
 537
 538
 539 static void wpas_wps_reenable_networks_cb(void *eloop_ctx, void *timeout_ctx)
 540 {
 541         struct wpa_supplicant *wpa_s = eloop_ctx;
 542         /* Enable the networks disabled during wpas_wps_reassoc */
 543         wpas_wps_reenable_networks(wpa_s);
 544 }
 545
 546
 547 static void wpa_supplicant_wps_event_success(struct wpa_supplicant *wpa_s)
 548 {
 549         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_SUCCESS);
 550         wpa_s->wps_success = 1;
 551         wpas_notify_wps_event_success(wpa_s);
 552
 553         /*
 554          * Enable the networks disabled during wpas_wps_reassoc after 10
 555          * seconds. The 10 seconds timer is to allow the data connection to be
 556          * formed before allowing other networks to be selected.
 557          */
 558         eloop_register_timeout(10, 0, wpas_wps_reenable_networks_cb, wpa_s,
 559                                NULL);
 560
 561 #ifdef CONFIG_P2P
 562         wpas_p2p_wps_success(wpa_s, wpa_s->bssid, 0);
 563 #endif /* CONFIG_P2P */
 564 }
 565
 566
 567 static void wpa_supplicant_wps_event_er_ap_add(struct wpa_supplicant *wpa_s,
 568                                                struct wps_event_er_ap *ap)
 569 {
 570         char uuid_str[100];
 571         char dev_type[WPS_DEV_TYPE_BUFSIZE];
 572
 573         uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str));
 574         if (ap->pri_dev_type)
 575                 wps_dev_type_bin2str(ap->pri_dev_type, dev_type,
 576                                      sizeof(dev_type));
 577         else
 578                 dev_type[0] = '\0';
 579
 580         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_ADD "%s " MACSTR
 581                 " pri_dev_type=%s wps_state=%d |%s|%s|%s|%s|%s|%s|",
 582                 uuid_str, MAC2STR(ap->mac_addr), dev_type, ap->wps_state,
 583                 ap->friendly_name ? ap->friendly_name : "",
 584                 ap->manufacturer ? ap->manufacturer : "",
 585                 ap->model_description ? ap->model_description : "",
 586                 ap->model_name ? ap->model_name : "",
 587                 ap->manufacturer_url ? ap->manufacturer_url : "",
 588                 ap->model_url ? ap->model_url : "");
 589 }
 590
 591
 592 static void wpa_supplicant_wps_event_er_ap_remove(struct wpa_supplicant *wpa_s,
 593                                                   struct wps_event_er_ap *ap)
 594 {
 595         char uuid_str[100];
 596         uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str));
 597         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_REMOVE "%s", uuid_str);
 598 }
 599
 600
 601 static void wpa_supplicant_wps_event_er_enrollee_add(
 602         struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee)
 603 {
 604         char uuid_str[100];
 605         char dev_type[WPS_DEV_TYPE_BUFSIZE];
 606
 607         uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str));
 608         if (enrollee->pri_dev_type)
 609                 wps_dev_type_bin2str(enrollee->pri_dev_type, dev_type,
 610                                      sizeof(dev_type));
 611         else
 612                 dev_type[0] = '\0';
 613
 614         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_ADD "%s " MACSTR
 615                 " M1=%d config_methods=0x%x dev_passwd_id=%d pri_dev_type=%s "
 616                 "|%s|%s|%s|%s|%s|",
 617                 uuid_str, MAC2STR(enrollee->mac_addr), enrollee->m1_received,
 618                 enrollee->config_methods, enrollee->dev_passwd_id, dev_type,
 619                 enrollee->dev_name ? enrollee->dev_name : "",
 620                 enrollee->manufacturer ? enrollee->manufacturer : "",
 621                 enrollee->model_name ? enrollee->model_name : "",
 622                 enrollee->model_number ? enrollee->model_number : "",
 623                 enrollee->serial_number ? enrollee->serial_number : "");
 624 }
 625
 626
 627 static void wpa_supplicant_wps_event_er_enrollee_remove(
 628         struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee)
 629 {
 630         char uuid_str[100];
 631         uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str));
 632         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_REMOVE "%s " MACSTR,
 633                 uuid_str, MAC2STR(enrollee->mac_addr));
 634 }
 635
 636
 637 static void wpa_supplicant_wps_event_er_ap_settings(
 638         struct wpa_supplicant *wpa_s,
 639         struct wps_event_er_ap_settings *ap_settings)
 640 {
 641         char uuid_str[100];
 642         char key_str[65];
 643         const struct wps_credential *cred = ap_settings->cred;
 644
 645         key_str[0] = '\0';
 646         if (cred->auth_type & (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) {
 647                 if (cred->key_len >= 8 && cred->key_len <= 64) {
 648                         os_memcpy(key_str, cred->key, cred->key_len);
 649                         key_str[cred->key_len] = '\0';
 650                 }
 651         }
 652
 653         uuid_bin2str(ap_settings->uuid, uuid_str, sizeof(uuid_str));
 654         /* Use wpa_msg_ctrl to avoid showing the key in debug log */
 655         wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_SETTINGS
 656                      "uuid=%s ssid=%s auth_type=0x%04x encr_type=0x%04x "
 657                      "key=%s",
 658                      uuid_str, wpa_ssid_txt(cred->ssid, cred->ssid_len),
 659                      cred->auth_type, cred->encr_type, key_str);
 660 }
 661
 662
 663 static void wpa_supplicant_wps_event_er_set_sel_reg(
 664         struct wpa_supplicant *wpa_s,
 665         struct wps_event_er_set_selected_registrar *ev)
 666 {
 667         char uuid_str[100];
 668
 669         uuid_bin2str(ev->uuid, uuid_str, sizeof(uuid_str));
 670         switch (ev->state) {
 671         case WPS_ER_SET_SEL_REG_START:
 672                 wpa_msg(wpa_s, MSG_DEBUG, WPS_EVENT_ER_SET_SEL_REG
 673                         "uuid=%s state=START sel_reg=%d dev_passwd_id=%u "
 674                         "sel_reg_config_methods=0x%x",
 675                         uuid_str, ev->sel_reg, ev->dev_passwd_id,
 676                         ev->sel_reg_config_methods);
 677                 break;
 678         case WPS_ER_SET_SEL_REG_DONE:
 679                 wpa_msg(wpa_s, MSG_DEBUG, WPS_EVENT_ER_SET_SEL_REG
 680                         "uuid=%s state=DONE", uuid_str);
 681                 break;
 682         case WPS_ER_SET_SEL_REG_FAILED:
 683                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_SET_SEL_REG
 684                         "uuid=%s state=FAILED", uuid_str);
 685                 break;
 686         }
 687 }
 688
 689
 690 static void wpa_supplicant_wps_event(void *ctx, enum wps_event event,
 691                                      union wps_event_data *data)
 692 {
 693         struct wpa_supplicant *wpa_s = ctx;
 694         switch (event) {
 695         case WPS_EV_M2D:
 696                 wpa_supplicant_wps_event_m2d(wpa_s, &data->m2d);
 697                 break;
 698         case WPS_EV_FAIL:
 699                 wpa_supplicant_wps_event_fail(wpa_s, &data->fail);
 700                 break;
 701         case WPS_EV_SUCCESS:
 702                 wpa_supplicant_wps_event_success(wpa_s);
 703                 break;
 704         case WPS_EV_PWD_AUTH_FAIL:
 705 #ifdef CONFIG_AP
 706                 if (wpa_s->ap_iface && data->pwd_auth_fail.enrollee)
 707                         wpa_supplicant_ap_pwd_auth_fail(wpa_s);
 708 #endif /* CONFIG_AP */
 709                 break;
 710         case WPS_EV_PBC_OVERLAP:
 711                 break;
 712         case WPS_EV_PBC_TIMEOUT:
 713                 break;
 714         case WPS_EV_ER_AP_ADD:
 715                 wpa_supplicant_wps_event_er_ap_add(wpa_s, &data->ap);
 716                 break;
 717         case WPS_EV_ER_AP_REMOVE:
 718                 wpa_supplicant_wps_event_er_ap_remove(wpa_s, &data->ap);
 719                 break;
 720         case WPS_EV_ER_ENROLLEE_ADD:
 721                 wpa_supplicant_wps_event_er_enrollee_add(wpa_s,
 722                                                          &data->enrollee);
 723                 break;
 724         case WPS_EV_ER_ENROLLEE_REMOVE:
 725                 wpa_supplicant_wps_event_er_enrollee_remove(wpa_s,
 726                                                             &data->enrollee);
 727                 break;
 728         case WPS_EV_ER_AP_SETTINGS:
 729                 wpa_supplicant_wps_event_er_ap_settings(wpa_s,
 730                                                         &data->ap_settings);
 731                 break;
 732         case WPS_EV_ER_SET_SELECTED_REGISTRAR:
 733                 wpa_supplicant_wps_event_er_set_sel_reg(wpa_s,
 734                                                         &data->set_sel_reg);
 735                 break;
 736         case WPS_EV_AP_PIN_SUCCESS:
 737                 break;
 738         }
 739 }
 740
 741
 742 enum wps_request_type wpas_wps_get_req_type(struct wpa_ssid *ssid)
 743 {
 744         if (eap_is_wps_pbc_enrollee(&ssid->eap) ||
 745             eap_is_wps_pin_enrollee(&ssid->eap))
 746                 return WPS_REQ_ENROLLEE;
 747         else
 748                 return WPS_REQ_REGISTRAR;
 749 }
 750
 751
 752 static void wpas_clear_wps(struct wpa_supplicant *wpa_s)
 753 {
 754         int id;
 755         struct wpa_ssid *ssid, *remove_ssid = NULL, *prev_current;
 756
 757         prev_current = wpa_s->current_ssid;
 758
 759         /* Enable the networks disabled during wpas_wps_reassoc */
 760         wpas_wps_reenable_networks(wpa_s);
 761
 762         eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
 763
 764         /* Remove any existing WPS network from configuration */
 765         ssid = wpa_s->conf->ssid;
 766         while (ssid) {
 767                 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
 768                         if (ssid == wpa_s->current_ssid) {
 769                                 wpa_s->current_ssid = NULL;
 770                                 if (ssid != NULL)
 771                                         wpas_notify_network_changed(wpa_s);
 772                         }
 773                         id = ssid->id;
 774                         remove_ssid = ssid;
 775                 } else
 776                         id = -1;
 777                 ssid = ssid->next;
 778                 if (id >= 0) {
 779                         if (prev_current == remove_ssid) {
 780                                 wpa_sm_set_config(wpa_s->wpa, NULL);
 781                                 eapol_sm_notify_config(wpa_s->eapol, NULL,
 782                                                        NULL);
 783                         }
 784                         wpas_notify_network_removed(wpa_s, remove_ssid);
 785                         wpa_config_remove_network(wpa_s->conf, id);
 786                 }
 787         }
 788
 789         wpas_wps_clear_ap_info(wpa_s);
 790 }
 791
 792
 793 static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx)
 794 {
 795         struct wpa_supplicant *wpa_s = eloop_ctx;
 796         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_TIMEOUT "Requested operation timed "
 797                 "out");
 798         wpas_clear_wps(wpa_s);
 799 }
 800
 801
 802 static struct wpa_ssid * wpas_wps_add_network(struct wpa_supplicant *wpa_s,
 803                                               int registrar, const u8 *bssid)
 804 {
 805         struct wpa_ssid *ssid;
 806
 807         ssid = wpa_config_add_network(wpa_s->conf);
 808         if (ssid == NULL)
 809                 return NULL;
 810         wpas_notify_network_added(wpa_s, ssid);
 811         wpa_config_set_network_defaults(ssid);
 812         ssid->temporary = 1;
 813         if (wpa_config_set(ssid, "key_mgmt", "WPS", 0) < 0 ||
 814             wpa_config_set(ssid, "eap", "WSC", 0) < 0 ||
 815             wpa_config_set(ssid, "identity", registrar ?
 816                            "\"" WSC_ID_REGISTRAR "\"" :
 817                            "\"" WSC_ID_ENROLLEE "\"", 0) < 0) {
 818                 wpas_notify_network_removed(wpa_s, ssid);
 819                 wpa_config_remove_network(wpa_s->conf, ssid->id);
 820                 return NULL;
 821         }
 822
 823         if (bssid) {
 824 #ifndef CONFIG_P2P
 825                 struct wpa_bss *bss;
 826                 int count = 0;
 827 #endif /* CONFIG_P2P */
 828
 829                 os_memcpy(ssid->bssid, bssid, ETH_ALEN);
 830                 ssid->bssid_set = 1;
 831
 832                 /*
 833                  * Note: With P2P, the SSID may change at the time the WPS
 834                  * provisioning is started, so better not filter the AP based
 835                  * on the current SSID in the scan results.
 836                  */
 837 #ifndef CONFIG_P2P
 838                 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
 839                         if (os_memcmp(bssid, bss->bssid, ETH_ALEN) != 0)
 840                                 continue;
 841
 842                         os_free(ssid->ssid);
 843                         ssid->ssid = os_malloc(bss->ssid_len);
 844                         if (ssid->ssid == NULL)
 845                                 break;
 846                         os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
 847                         ssid->ssid_len = bss->ssid_len;
 848                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Picked SSID from "
 849                                           "scan results",
 850                                           ssid->ssid, ssid->ssid_len);
 851                         count++;
 852                 }
 853
 854                 if (count > 1) {
 855                         wpa_printf(MSG_DEBUG, "WPS: More than one SSID found "
 856                                    "for the AP; use wildcard");
 857                         os_free(ssid->ssid);
 858                         ssid->ssid = NULL;
 859                         ssid->ssid_len = 0;
 860                 }
 861 #endif /* CONFIG_P2P */
 862         }
 863
 864         return ssid;
 865 }
 866
 867
 868 static void wpas_wps_reassoc(struct wpa_supplicant *wpa_s,
 869                              struct wpa_ssid *selected, const u8 *bssid)
 870 {
 871         struct wpa_ssid *ssid;
 872         struct wpa_bss *bss;
 873
 874         wpa_s->known_wps_freq = 0;
 875         if (bssid) {
 876                 bss = wpa_bss_get_bssid(wpa_s, bssid);
 877                 if (bss && bss->freq > 0) {
 878                         wpa_s->known_wps_freq = 1;
 879                         wpa_s->wps_freq = bss->freq;
 880                 }
 881         }
 882
 883         if (wpa_s->current_ssid)
 884                 wpa_supplicant_deauthenticate(
 885                         wpa_s, WLAN_REASON_DEAUTH_LEAVING);
 886
 887         /* Mark all other networks disabled and trigger reassociation */
 888         ssid = wpa_s->conf->ssid;
 889         while (ssid) {
 890                 int was_disabled = ssid->disabled;
 891                 ssid->disabled_for_connect = 0;
 892                 /*
 893                  * In case the network object corresponds to a persistent group
 894                  * then do not send out network disabled signal. In addition,
 895                  * do not change disabled status of persistent network objects
 896                  * from 2 to 1 should we connect to another network.
 897                  */
 898                 if (was_disabled != 2) {
 899                         ssid->disabled = ssid != selected;
 900                         if (was_disabled != ssid->disabled) {
 901                                 if (ssid->disabled)
 902                                         ssid->disabled_for_connect = 1;
 903                                 wpas_notify_network_enabled_changed(wpa_s,
 904                                                                     ssid);
 905                         }
 906                 }
 907                 ssid = ssid->next;
 908         }
 909         wpa_s->disconnected = 0;
 910         wpa_s->reassociate = 1;
 911         wpa_s->scan_runs = 0;
 912         wpa_s->normal_scans = 0;
 913         wpa_s->wps_success = 0;
 914         wpa_s->blacklist_cleared = 0;
 915         wpa_supplicant_req_scan(wpa_s, 0, 0);
 916 }
 917
 918
 919 int wpas_wps_start_pbc(struct wpa_supplicant *wpa_s, const u8 *bssid,
 920                        int p2p_group)
 921 {
 922         struct wpa_ssid *ssid;
 923         wpas_clear_wps(wpa_s);
 924         ssid = wpas_wps_add_network(wpa_s, 0, bssid);
 925         if (ssid == NULL)
 926                 return -1;
 927         ssid->temporary = 1;
 928         ssid->p2p_group = p2p_group;
 929 #ifdef CONFIG_P2P
 930         if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) {
 931                 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1);
 932                 if (ssid->ssid) {
 933                         ssid->ssid_len = wpa_s->go_params->ssid_len;
 934                         os_memcpy(ssid->ssid, wpa_s->go_params->ssid,
 935                                   ssid->ssid_len);
 936                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP "
 937                                           "SSID", ssid->ssid, ssid->ssid_len);
 938                 }
 939         }
 940 #endif /* CONFIG_P2P */
 941         wpa_config_set(ssid, "phase1", "\"pbc=1\"", 0);
 942         if (wpa_s->wps_fragment_size)
 943                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
 944         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
 945                                wpa_s, NULL);
 946         wpas_wps_reassoc(wpa_s, ssid, bssid);
 947         return 0;
 948 }
 949
 950
 951 int wpas_wps_start_pin(struct wpa_supplicant *wpa_s, const u8 *bssid,
 952                        const char *pin, int p2p_group, u16 dev_pw_id)
 953 {
 954         struct wpa_ssid *ssid;
 955         char val[128];
 956         unsigned int rpin = 0;
 957
 958         wpas_clear_wps(wpa_s);
 959         ssid = wpas_wps_add_network(wpa_s, 0, bssid);
 960         if (ssid == NULL)
 961                 return -1;
 962         ssid->temporary = 1;
 963         ssid->p2p_group = p2p_group;
 964 #ifdef CONFIG_P2P
 965         if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) {
 966                 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1);
 967                 if (ssid->ssid) {
 968                         ssid->ssid_len = wpa_s->go_params->ssid_len;
 969                         os_memcpy(ssid->ssid, wpa_s->go_params->ssid,
 970                                   ssid->ssid_len);
 971                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP "
 972                                           "SSID", ssid->ssid, ssid->ssid_len);
 973                 }
 974         }
 975 #endif /* CONFIG_P2P */
 976         if (pin)
 977                 os_snprintf(val, sizeof(val), "\"pin=%s dev_pw_id=%u\"",
 978                             pin, dev_pw_id);
 979         else {
 980                 rpin = wps_generate_pin();
 981                 os_snprintf(val, sizeof(val), "\"pin=%08d dev_pw_id=%u\"",
 982                             rpin, dev_pw_id);
 983         }
 984         wpa_config_set(ssid, "phase1", val, 0);
 985         if (wpa_s->wps_fragment_size)
 986                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
 987         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
 988                                wpa_s, NULL);
 989         wpa_s->wps_ap_iter = 1;
 990         wpas_wps_reassoc(wpa_s, ssid, bssid);
 991         return rpin;
 992 }
 993
 994
 995 /* Cancel the wps pbc/pin requests */
 996 int wpas_wps_cancel(struct wpa_supplicant *wpa_s)
 997 {
 998 #ifdef CONFIG_AP
 999         if (wpa_s->ap_iface) {
1000                 wpa_printf(MSG_DEBUG, "WPS: Cancelling in AP mode");
1001                 return wpa_supplicant_ap_wps_cancel(wpa_s);
1002         }
1003 #endif /* CONFIG_AP */
1004
1005         if (wpa_s->wpa_state == WPA_SCANNING ||
1006             wpa_s->wpa_state == WPA_DISCONNECTED) {
1007                 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - cancel scan");
1008                 wpa_supplicant_cancel_scan(wpa_s);
1009                 wpas_clear_wps(wpa_s);
1010         } else if (wpa_s->wpa_state >= WPA_ASSOCIATED) {
1011                 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - "
1012                            "deauthenticate");
1013                 wpa_supplicant_deauthenticate(wpa_s,
1014                                               WLAN_REASON_DEAUTH_LEAVING);
1015                 wpas_clear_wps(wpa_s);
1016         } else {
1017                 wpas_wps_reenable_networks(wpa_s);
1018                 wpas_wps_clear_ap_info(wpa_s);
1019         }
1020
1021         return 0;
1022 }
1023
1024
1025 int wpas_wps_start_reg(struct wpa_supplicant *wpa_s, const u8 *bssid,
1026                        const char *pin, struct wps_new_ap_settings *settings)
1027 {
1028         struct wpa_ssid *ssid;
1029         char val[200];
1030         char *pos, *end;
1031         int res;
1032
1033         if (!pin)
1034                 return -1;
1035         wpas_clear_wps(wpa_s);
1036         ssid = wpas_wps_add_network(wpa_s, 1, bssid);
1037         if (ssid == NULL)
1038                 return -1;
1039         ssid->temporary = 1;
1040         pos = val;
1041         end = pos + sizeof(val);
1042         res = os_snprintf(pos, end - pos, "\"pin=%s", pin);
1043         if (res < 0 || res >= end - pos)
1044                 return -1;
1045         pos += res;
1046         if (settings) {
1047                 res = os_snprintf(pos, end - pos, " new_ssid=%s new_auth=%s "
1048                                   "new_encr=%s new_key=%s",
1049                                   settings->ssid_hex, settings->auth,
1050                                   settings->encr, settings->key_hex);
1051                 if (res < 0 || res >= end - pos)
1052                         return -1;
1053                 pos += res;
1054         }
1055         res = os_snprintf(pos, end - pos, "\"");
1056         if (res < 0 || res >= end - pos)
1057                 return -1;
1058         wpa_config_set(ssid, "phase1", val, 0);
1059         if (wpa_s->wps_fragment_size)
1060                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
1061         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
1062                                wpa_s, NULL);
1063         wpas_wps_reassoc(wpa_s, ssid, bssid);
1064         return 0;
1065 }
1066
1067
1068 static int wpas_wps_new_psk_cb(void *ctx, const u8 *mac_addr, const u8 *psk,
1069                                size_t psk_len)
1070 {
1071         wpa_printf(MSG_DEBUG, "WPS: Received new WPA/WPA2-PSK from WPS for "
1072                    "STA " MACSTR, MAC2STR(mac_addr));
1073         wpa_hexdump_key(MSG_DEBUG, "Per-device PSK", psk, psk_len);
1074
1075         /* TODO */
1076
1077         return 0;
1078 }
1079
1080
1081 static void wpas_wps_pin_needed_cb(void *ctx, const u8 *uuid_e,
1082                                    const struct wps_device_data *dev)
1083 {
1084         char uuid[40], txt[400];
1085         int len;
1086         char devtype[WPS_DEV_TYPE_BUFSIZE];
1087         if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
1088                 return;
1089         wpa_printf(MSG_DEBUG, "WPS: PIN needed for UUID-E %s", uuid);
1090         len = os_snprintf(txt, sizeof(txt), "WPS-EVENT-PIN-NEEDED %s " MACSTR
1091                           " [%s|%s|%s|%s|%s|%s]",
1092                           uuid, MAC2STR(dev->mac_addr), dev->device_name,
1093                           dev->manufacturer, dev->model_name,
1094                           dev->model_number, dev->serial_number,
1095                           wps_dev_type_bin2str(dev->pri_dev_type, devtype,
1096                                                sizeof(devtype)));
1097         if (len > 0 && len < (int) sizeof(txt))
1098                 wpa_printf(MSG_INFO, "%s", txt);
1099 }
1100
1101
1102 static void wpas_wps_set_sel_reg_cb(void *ctx, int sel_reg, u16 dev_passwd_id,
1103                                     u16 sel_reg_config_methods)
1104 {
1105 #ifdef CONFIG_WPS_ER
1106         struct wpa_supplicant *wpa_s = ctx;
1107
1108         if (wpa_s->wps_er == NULL)
1109                 return;
1110         wpa_printf(MSG_DEBUG, "WPS ER: SetSelectedRegistrar - sel_reg=%d "
1111                    "dev_password_id=%u sel_reg_config_methods=0x%x",
1112                    sel_reg, dev_passwd_id, sel_reg_config_methods);
1113         wps_er_set_sel_reg(wpa_s->wps_er, sel_reg, dev_passwd_id,
1114                            sel_reg_config_methods);
1115 #endif /* CONFIG_WPS_ER */
1116 }
1117
1118
1119 static u16 wps_fix_config_methods(u16 config_methods)
1120 {
1121 #ifdef CONFIG_WPS2
1122         if ((config_methods &
1123              (WPS_CONFIG_DISPLAY | WPS_CONFIG_VIRT_DISPLAY |
1124               WPS_CONFIG_PHY_DISPLAY)) == WPS_CONFIG_DISPLAY) {
1125                 wpa_printf(MSG_INFO, "WPS: Converting display to "
1126                            "virtual_display for WPS 2.0 compliance");
1127                 config_methods |= WPS_CONFIG_VIRT_DISPLAY;
1128         }
1129         if ((config_methods &
1130              (WPS_CONFIG_PUSHBUTTON | WPS_CONFIG_VIRT_PUSHBUTTON |
1131               WPS_CONFIG_PHY_PUSHBUTTON)) == WPS_CONFIG_PUSHBUTTON) {
1132                 wpa_printf(MSG_INFO, "WPS: Converting push_button to "
1133                            "virtual_push_button for WPS 2.0 compliance");
1134                 config_methods |= WPS_CONFIG_VIRT_PUSHBUTTON;
1135         }
1136 #endif /* CONFIG_WPS2 */
1137
1138         return config_methods;
1139 }
1140
1141
1142 static void wpas_wps_set_uuid(struct wpa_supplicant *wpa_s,
1143                               struct wps_context *wps)
1144 {
1145         wpa_printf(MSG_DEBUG, "WPS: Set UUID for interface %s", wpa_s->ifname);
1146         if (is_nil_uuid(wpa_s->conf->uuid)) {
1147                 struct wpa_supplicant *first;
1148                 first = wpa_s->global->ifaces;
1149                 while (first && first->next)
1150                         first = first->next;
1151                 if (first && first != wpa_s) {
1152                         if (wps != wpa_s->global->ifaces->wps)
1153                                 os_memcpy(wps->uuid,
1154                                           wpa_s->global->ifaces->wps->uuid,
1155                                           WPS_UUID_LEN);
1156                         wpa_hexdump(MSG_DEBUG, "WPS: UUID from the first "
1157                                     "interface", wps->uuid, WPS_UUID_LEN);
1158                 } else {
1159                         uuid_gen_mac_addr(wpa_s->own_addr, wps->uuid);
1160                         wpa_hexdump(MSG_DEBUG, "WPS: UUID based on MAC "
1161                                     "address", wps->uuid, WPS_UUID_LEN);
1162                 }
1163         } else {
1164                 os_memcpy(wps->uuid, wpa_s->conf->uuid, WPS_UUID_LEN);
1165                 wpa_hexdump(MSG_DEBUG, "WPS: UUID based on configuration",
1166                             wps->uuid, WPS_UUID_LEN);
1167         }
1168 }
1169
1170
1171 static void wpas_wps_set_vendor_ext_m1(struct wpa_supplicant *wpa_s,
1172                                        struct wps_context *wps)
1173 {
1174         wpabuf_free(wps->dev.vendor_ext_m1);
1175         wps->dev.vendor_ext_m1 = NULL;
1176
1177         if (wpa_s->conf->wps_vendor_ext_m1) {
1178                 wps->dev.vendor_ext_m1 =
1179                         wpabuf_dup(wpa_s->conf->wps_vendor_ext_m1);
1180                 if (!wps->dev.vendor_ext_m1) {
1181                         wpa_printf(MSG_ERROR, "WPS: Cannot "
1182                                    "allocate memory for vendor_ext_m1");
1183                 }
1184         }
1185 }
1186
1187
1188 int wpas_wps_init(struct wpa_supplicant *wpa_s)
1189 {
1190         struct wps_context *wps;
1191         struct wps_registrar_config rcfg;
1192         struct hostapd_hw_modes *modes;
1193         u16 m;
1194
1195         wps = os_zalloc(sizeof(*wps));
1196         if (wps == NULL)
1197                 return -1;
1198
1199         wps->cred_cb = wpa_supplicant_wps_cred;
1200         wps->event_cb = wpa_supplicant_wps_event;
1201         wps->cb_ctx = wpa_s;
1202
1203         wps->dev.device_name = wpa_s->conf->device_name;
1204         wps->dev.manufacturer = wpa_s->conf->manufacturer;
1205         wps->dev.model_name = wpa_s->conf->model_name;
1206         wps->dev.model_number = wpa_s->conf->model_number;
1207         wps->dev.serial_number = wpa_s->conf->serial_number;
1208         wps->config_methods =
1209                 wps_config_methods_str2bin(wpa_s->conf->config_methods);
1210         if ((wps->config_methods & (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) ==
1211             (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
1212                 wpa_printf(MSG_ERROR, "WPS: Both Label and Display config "
1213                            "methods are not allowed at the same time");
1214                 os_free(wps);
1215                 return -1;
1216         }
1217         wps->config_methods = wps_fix_config_methods(wps->config_methods);
1218         wps->dev.config_methods = wps->config_methods;
1219         os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type,
1220                   WPS_DEV_TYPE_LEN);
1221
1222         wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
1223         os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type,
1224                   WPS_DEV_TYPE_LEN * wps->dev.num_sec_dev_types);
1225
1226         wpas_wps_set_vendor_ext_m1(wpa_s, wps);
1227
1228         wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
1229         modes = wpa_s->hw.modes;
1230         if (modes) {
1231                 for (m = 0; m < wpa_s->hw.num_modes; m++) {
1232                         if (modes[m].mode == HOSTAPD_MODE_IEEE80211B ||
1233                             modes[m].mode == HOSTAPD_MODE_IEEE80211G)
1234                                 wps->dev.rf_bands |= WPS_RF_24GHZ;
1235                         else if (modes[m].mode == HOSTAPD_MODE_IEEE80211A)
1236                                 wps->dev.rf_bands |= WPS_RF_50GHZ;
1237                 }
1238         }
1239         if (wps->dev.rf_bands == 0) {
1240                 /*
1241                  * Default to claiming support for both bands if the driver
1242                  * does not provide support for fetching supported bands.
1243                  */
1244                 wps->dev.rf_bands = WPS_RF_24GHZ | WPS_RF_50GHZ;
1245         }
1246         os_memcpy(wps->dev.mac_addr, wpa_s->own_addr, ETH_ALEN);
1247         wpas_wps_set_uuid(wpa_s, wps);
1248
1249         wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK;
1250         wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP;
1251
1252         os_memset(&rcfg, 0, sizeof(rcfg));
1253         rcfg.new_psk_cb = wpas_wps_new_psk_cb;
1254         rcfg.pin_needed_cb = wpas_wps_pin_needed_cb;
1255         rcfg.set_sel_reg_cb = wpas_wps_set_sel_reg_cb;
1256         rcfg.cb_ctx = wpa_s;
1257
1258         wps->registrar = wps_registrar_init(wps, &rcfg);
1259         if (wps->registrar == NULL) {
1260                 wpa_printf(MSG_DEBUG, "Failed to initialize WPS Registrar");
1261                 os_free(wps);
1262                 return -1;
1263         }
1264
1265         wpa_s->wps = wps;
1266
1267         return 0;
1268 }
1269
1270
1271 void wpas_wps_deinit(struct wpa_supplicant *wpa_s)
1272 {
1273         eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
1274         eloop_cancel_timeout(wpas_wps_reenable_networks_cb, wpa_s, NULL);
1275         wpas_wps_clear_ap_info(wpa_s);
1276
1277         if (wpa_s->wps == NULL)
1278                 return;
1279
1280 #ifdef CONFIG_WPS_ER
1281         wps_er_deinit(wpa_s->wps_er, NULL, NULL);
1282         wpa_s->wps_er = NULL;
1283 #endif /* CONFIG_WPS_ER */
1284
1285         wps_registrar_deinit(wpa_s->wps->registrar);
1286         wpabuf_free(wpa_s->wps->dh_pubkey);
1287         wpabuf_free(wpa_s->wps->dh_privkey);
1288         wpabuf_free(wpa_s->wps->dev.vendor_ext_m1);
1289         os_free(wpa_s->wps->network_key);
1290         os_free(wpa_s->wps);
1291         wpa_s->wps = NULL;
1292 }
1293
1294
1295 int wpas_wps_ssid_bss_match(struct wpa_supplicant *wpa_s,
1296                             struct wpa_ssid *ssid, struct wpa_bss *bss)
1297 {
1298         struct wpabuf *wps_ie;
1299
1300         if (!(ssid->key_mgmt & WPA_KEY_MGMT_WPS))
1301                 return -1;
1302
1303         wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1304         if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
1305                 if (!wps_ie) {
1306                         wpa_printf(MSG_DEBUG, "   skip - non-WPS AP");
1307                         return 0;
1308                 }
1309
1310                 if (!wps_is_selected_pbc_registrar(wps_ie)) {
1311                         wpa_printf(MSG_DEBUG, "   skip - WPS AP "
1312                                    "without active PBC Registrar");
1313                         wpabuf_free(wps_ie);
1314                         return 0;
1315                 }
1316
1317                 /* TODO: overlap detection */
1318                 wpa_printf(MSG_DEBUG, "   selected based on WPS IE "
1319                            "(Active PBC)");
1320                 wpabuf_free(wps_ie);
1321                 return 1;
1322         }
1323
1324         if (eap_is_wps_pin_enrollee(&ssid->eap)) {
1325                 if (!wps_ie) {
1326                         wpa_printf(MSG_DEBUG, "   skip - non-WPS AP");
1327                         return 0;
1328                 }
1329
1330                 /*
1331                  * Start with WPS APs that advertise our address as an
1332                  * authorized MAC (v2.0) or active PIN Registrar (v1.0) and
1333                  * allow any WPS AP after couple of scans since some APs do not
1334                  * set Selected Registrar attribute properly when using
1335                  * external Registrar.
1336                  */
1337                 if (!wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1)) {
1338                         if (wpa_s->scan_runs < WPS_PIN_SCAN_IGNORE_SEL_REG) {
1339                                 wpa_printf(MSG_DEBUG, "   skip - WPS AP "
1340                                            "without active PIN Registrar");
1341                                 wpabuf_free(wps_ie);
1342                                 return 0;
1343                         }
1344                         wpa_printf(MSG_DEBUG, "   selected based on WPS IE");
1345                 } else {
1346                         wpa_printf(MSG_DEBUG, "   selected based on WPS IE "
1347                                    "(Authorized MAC or Active PIN)");
1348                 }
1349                 wpabuf_free(wps_ie);
1350                 return 1;
1351         }
1352
1353         if (wps_ie) {
1354                 wpa_printf(MSG_DEBUG, "   selected based on WPS IE");
1355                 wpabuf_free(wps_ie);
1356                 return 1;
1357         }
1358
1359         return -1;
1360 }
1361
1362
1363 int wpas_wps_ssid_wildcard_ok(struct wpa_supplicant *wpa_s,
1364                               struct wpa_ssid *ssid,
1365                               struct wpa_bss *bss)
1366 {
1367         struct wpabuf *wps_ie = NULL;
1368         int ret = 0;
1369
1370         if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
1371                 wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1372                 if (wps_ie && wps_is_selected_pbc_registrar(wps_ie)) {
1373                         /* allow wildcard SSID for WPS PBC */
1374                         ret = 1;
1375                 }
1376         } else if (eap_is_wps_pin_enrollee(&ssid->eap)) {
1377                 wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1378                 if (wps_ie &&
1379                     (wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1) ||
1380                      wpa_s->scan_runs >= WPS_PIN_SCAN_IGNORE_SEL_REG)) {
1381                         /* allow wildcard SSID for WPS PIN */
1382                         ret = 1;
1383                 }
1384         }
1385
1386         if (!ret && ssid->bssid_set &&
1387             os_memcmp(ssid->bssid, bss->bssid, ETH_ALEN) == 0) {
1388                 /* allow wildcard SSID due to hardcoded BSSID match */
1389                 ret = 1;
1390         }
1391
1392 #ifdef CONFIG_WPS_STRICT
1393         if (wps_ie) {
1394                 if (wps_validate_beacon_probe_resp(wps_ie, bss->beacon_ie_len >
1395                                                    0, bss->bssid) < 0)
1396                         ret = 0;
1397                 if (bss->beacon_ie_len) {
1398                         struct wpabuf *bcn_wps;
1399                         bcn_wps = wpa_bss_get_vendor_ie_multi_beacon(
1400                                 bss, WPS_IE_VENDOR_TYPE);
1401                         if (bcn_wps == NULL) {
1402                                 wpa_printf(MSG_DEBUG, "WPS: Mandatory WPS IE "
1403                                            "missing from AP Beacon");
1404                                 ret = 0;
1405                         } else {
1406                                 if (wps_validate_beacon(wps_ie) < 0)
1407                                         ret = 0;
1408                                 wpabuf_free(bcn_wps);
1409                         }
1410                 }
1411         }
1412 #endif /* CONFIG_WPS_STRICT */
1413
1414         wpabuf_free(wps_ie);
1415
1416         return ret;
1417 }
1418
1419
1420 int wpas_wps_scan_pbc_overlap(struct wpa_supplicant *wpa_s,
1421                               struct wpa_bss *selected, struct wpa_ssid *ssid)
1422 {
1423         const u8 *sel_uuid, *uuid;
1424         struct wpabuf *wps_ie;
1425         int ret = 0;
1426         struct wpa_bss *bss;
1427
1428         if (!eap_is_wps_pbc_enrollee(&ssid->eap))
1429                 return 0;
1430
1431         wpa_printf(MSG_DEBUG, "WPS: Check whether PBC session overlap is "
1432                    "present in scan results; selected BSSID " MACSTR,
1433                    MAC2STR(selected->bssid));
1434
1435         /* Make sure that only one AP is in active PBC mode */
1436         wps_ie = wpa_bss_get_vendor_ie_multi(selected, WPS_IE_VENDOR_TYPE);
1437         if (wps_ie) {
1438                 sel_uuid = wps_get_uuid_e(wps_ie);
1439                 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the selected BSS",
1440                             sel_uuid, UUID_LEN);
1441         } else {
1442                 wpa_printf(MSG_DEBUG, "WPS: Selected BSS does not include "
1443                            "WPS IE?!");
1444                 sel_uuid = NULL;
1445         }
1446
1447         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1448                 struct wpabuf *ie;
1449                 if (bss == selected)
1450                         continue;
1451                 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1452                 if (!ie)
1453                         continue;
1454                 if (!wps_is_selected_pbc_registrar(ie)) {
1455                         wpabuf_free(ie);
1456                         continue;
1457                 }
1458                 wpa_printf(MSG_DEBUG, "WPS: Another BSS in active PBC mode: "
1459                            MACSTR, MAC2STR(bss->bssid));
1460                 uuid = wps_get_uuid_e(ie);
1461                 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the other BSS",
1462                             uuid, UUID_LEN);
1463                 if (sel_uuid == NULL || uuid == NULL ||
1464                     os_memcmp(sel_uuid, uuid, UUID_LEN) != 0) {
1465                         ret = 1; /* PBC overlap */
1466                         wpa_msg(wpa_s, MSG_INFO, "WPS: PBC overlap detected: "
1467                                 MACSTR " and " MACSTR,
1468                                 MAC2STR(selected->bssid),
1469                                 MAC2STR(bss->bssid));
1470                         wpabuf_free(ie);
1471                         break;
1472                 }
1473
1474                 /* TODO: verify that this is reasonable dual-band situation */
1475
1476                 wpabuf_free(ie);
1477         }
1478
1479         wpabuf_free(wps_ie);
1480
1481         return ret;
1482 }
1483
1484
1485 void wpas_wps_notify_scan_results(struct wpa_supplicant *wpa_s)
1486 {
1487         struct wpa_bss *bss;
1488         unsigned int pbc = 0, auth = 0, pin = 0, wps = 0;
1489
1490         if (wpa_s->disconnected || wpa_s->wpa_state >= WPA_ASSOCIATED)
1491                 return;
1492
1493         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1494                 struct wpabuf *ie;
1495                 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1496                 if (!ie)
1497                         continue;
1498                 if (wps_is_selected_pbc_registrar(ie))
1499                         pbc++;
1500                 else if (wps_is_addr_authorized(ie, wpa_s->own_addr, 0))
1501                         auth++;
1502                 else if (wps_is_selected_pin_registrar(ie))
1503                         pin++;
1504                 else
1505                         wps++;
1506                 wpabuf_free(ie);
1507         }
1508
1509         if (pbc)
1510                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PBC);
1511         else if (auth)
1512                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_AUTH);
1513         else if (pin)
1514                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PIN);
1515         else if (wps)
1516                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE);
1517 }
1518
1519
1520 int wpas_wps_searching(struct wpa_supplicant *wpa_s)
1521 {
1522         struct wpa_ssid *ssid;
1523
1524         for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1525                 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && !ssid->disabled)
1526                         return 1;
1527         }
1528
1529         return 0;
1530 }
1531
1532
1533 int wpas_wps_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
1534                               char *end)
1535 {
1536         struct wpabuf *wps_ie;
1537         int ret;
1538
1539         wps_ie = ieee802_11_vendor_ie_concat(ies, ies_len, WPS_DEV_OUI_WFA);
1540         if (wps_ie == NULL)
1541                 return 0;
1542
1543         ret = wps_attr_text(wps_ie, buf, end);
1544         wpabuf_free(wps_ie);
1545         return ret;
1546 }
1547
1548
1549 int wpas_wps_er_start(struct wpa_supplicant *wpa_s, const char *filter)
1550 {
1551 #ifdef CONFIG_WPS_ER
1552         if (wpa_s->wps_er) {
1553                 wps_er_refresh(wpa_s->wps_er);
1554                 return 0;
1555         }
1556         wpa_s->wps_er = wps_er_init(wpa_s->wps, wpa_s->ifname, filter);
1557         if (wpa_s->wps_er == NULL)
1558                 return -1;
1559         return 0;
1560 #else /* CONFIG_WPS_ER */
1561         return 0;
1562 #endif /* CONFIG_WPS_ER */
1563 }
1564
1565
1566 int wpas_wps_er_stop(struct wpa_supplicant *wpa_s)
1567 {
1568 #ifdef CONFIG_WPS_ER
1569         wps_er_deinit(wpa_s->wps_er, NULL, NULL);
1570         wpa_s->wps_er = NULL;
1571 #endif /* CONFIG_WPS_ER */
1572         return 0;
1573 }
1574
1575
1576 #ifdef CONFIG_WPS_ER
1577 int wpas_wps_er_add_pin(struct wpa_supplicant *wpa_s, const u8 *addr,
1578                         const char *uuid, const char *pin)
1579 {
1580         u8 u[UUID_LEN];
1581         int any = 0;
1582
1583         if (os_strcmp(uuid, "any") == 0)
1584                 any = 1;
1585         else if (uuid_str2bin(uuid, u))
1586                 return -1;
1587         return wps_registrar_add_pin(wpa_s->wps->registrar, addr,
1588                                      any ? NULL : u,
1589                                      (const u8 *) pin, os_strlen(pin), 300);
1590 }
1591
1592
1593 int wpas_wps_er_pbc(struct wpa_supplicant *wpa_s, const char *uuid)
1594 {
1595         u8 u[UUID_LEN];
1596
1597         if (uuid_str2bin(uuid, u))
1598                 return -1;
1599         return wps_er_pbc(wpa_s->wps_er, u);
1600 }
1601
1602
1603 int wpas_wps_er_learn(struct wpa_supplicant *wpa_s, const char *uuid,
1604                       const char *pin)
1605 {
1606         u8 u[UUID_LEN];
1607
1608         if (uuid_str2bin(uuid, u))
1609                 return -1;
1610         return wps_er_learn(wpa_s->wps_er, u, (const u8 *) pin,
1611                             os_strlen(pin));
1612 }
1613
1614
1615 int wpas_wps_er_set_config(struct wpa_supplicant *wpa_s, const char *uuid,
1616                            int id)
1617 {
1618         u8 u[UUID_LEN];
1619         struct wpa_ssid *ssid;
1620         struct wps_credential cred;
1621
1622         if (uuid_str2bin(uuid, u))
1623                 return -1;
1624         ssid = wpa_config_get_network(wpa_s->conf, id);
1625         if (ssid == NULL || ssid->ssid == NULL)
1626                 return -1;
1627
1628         os_memset(&cred, 0, sizeof(cred));
1629         if (ssid->ssid_len > 32)
1630                 return -1;
1631         os_memcpy(cred.ssid, ssid->ssid, ssid->ssid_len);
1632         cred.ssid_len = ssid->ssid_len;
1633         if (ssid->key_mgmt & WPA_KEY_MGMT_PSK) {
1634                 cred.auth_type = (ssid->proto & WPA_PROTO_RSN) ?
1635                         WPS_AUTH_WPA2PSK : WPS_AUTH_WPAPSK;
1636                 if (ssid->pairwise_cipher & WPA_CIPHER_CCMP)
1637                         cred.encr_type = WPS_ENCR_AES;
1638                 else
1639                         cred.encr_type = WPS_ENCR_TKIP;
1640                 if (ssid->passphrase) {
1641                         cred.key_len = os_strlen(ssid->passphrase);
1642                         if (cred.key_len >= 64)
1643                                 return -1;
1644                         os_memcpy(cred.key, ssid->passphrase, cred.key_len);
1645                 } else if (ssid->psk_set) {
1646                         cred.key_len = 32;
1647                         os_memcpy(cred.key, ssid->psk, 32);
1648                 } else
1649                         return -1;
1650         } else {
1651                 cred.auth_type = WPS_AUTH_OPEN;
1652                 cred.encr_type = WPS_ENCR_NONE;
1653         }
1654         return wps_er_set_config(wpa_s->wps_er, u, &cred);
1655 }
1656
1657
1658 int wpas_wps_er_config(struct wpa_supplicant *wpa_s, const char *uuid,
1659                        const char *pin, struct wps_new_ap_settings *settings)
1660 {
1661         u8 u[UUID_LEN];
1662         struct wps_credential cred;
1663         size_t len;
1664
1665         if (uuid_str2bin(uuid, u))
1666                 return -1;
1667         if (settings->ssid_hex == NULL || settings->auth == NULL ||
1668             settings->encr == NULL || settings->key_hex == NULL)
1669                 return -1;
1670
1671         os_memset(&cred, 0, sizeof(cred));
1672         len = os_strlen(settings->ssid_hex);
1673         if ((len & 1) || len > 2 * sizeof(cred.ssid) ||
1674             hexstr2bin(settings->ssid_hex, cred.ssid, len / 2))
1675                 return -1;
1676         cred.ssid_len = len / 2;
1677
1678         len = os_strlen(settings->key_hex);
1679         if ((len & 1) || len > 2 * sizeof(cred.key) ||
1680             hexstr2bin(settings->key_hex, cred.key, len / 2))
1681                 return -1;
1682         cred.key_len = len / 2;
1683
1684         if (os_strcmp(settings->auth, "OPEN") == 0)
1685                 cred.auth_type = WPS_AUTH_OPEN;
1686         else if (os_strcmp(settings->auth, "WPAPSK") == 0)
1687                 cred.auth_type = WPS_AUTH_WPAPSK;
1688         else if (os_strcmp(settings->auth, "WPA2PSK") == 0)
1689                 cred.auth_type = WPS_AUTH_WPA2PSK;
1690         else
1691                 return -1;
1692
1693         if (os_strcmp(settings->encr, "NONE") == 0)
1694                 cred.encr_type = WPS_ENCR_NONE;
1695         else if (os_strcmp(settings->encr, "WEP") == 0)
1696                 cred.encr_type = WPS_ENCR_WEP;
1697         else if (os_strcmp(settings->encr, "TKIP") == 0)
1698                 cred.encr_type = WPS_ENCR_TKIP;
1699         else if (os_strcmp(settings->encr, "CCMP") == 0)
1700                 cred.encr_type = WPS_ENCR_AES;
1701         else
1702                 return -1;
1703
1704         return wps_er_config(wpa_s->wps_er, u, (const u8 *) pin,
1705                              os_strlen(pin), &cred);
1706 }
1707
1708
1709 #ifdef CONFIG_WPS_NFC
1710 struct wpabuf * wpas_wps_er_nfc_config_token(struct wpa_supplicant *wpa_s,
1711                                              int ndef, const char *uuid)
1712 {
1713         struct wpabuf *ret;
1714         u8 u[UUID_LEN];
1715
1716         if (!wpa_s->wps_er)
1717                 return NULL;
1718
1719         if (uuid_str2bin(uuid, u))
1720                 return NULL;
1721
1722         ret = wps_er_nfc_config_token(wpa_s->wps_er, u);
1723         if (ndef && ret) {
1724                 struct wpabuf *tmp;
1725                 tmp = ndef_build_wifi(ret);
1726                 wpabuf_free(ret);
1727                 if (tmp == NULL)
1728                         return NULL;
1729                 ret = tmp;
1730         }
1731
1732         return ret;
1733 }
1734 #endif /* CONFIG_WPS_NFC */
1735
1736
1737 static int callbacks_pending = 0;
1738
1739 static void wpas_wps_terminate_cb(void *ctx)
1740 {
1741         wpa_printf(MSG_DEBUG, "WPS ER: Terminated");
1742         if (--callbacks_pending <= 0)
1743                 eloop_terminate();
1744 }
1745 #endif /* CONFIG_WPS_ER */
1746
1747
1748 int wpas_wps_terminate_pending(struct wpa_supplicant *wpa_s)
1749 {
1750 #ifdef CONFIG_WPS_ER
1751         if (wpa_s->wps_er) {
1752                 callbacks_pending++;
1753                 wps_er_deinit(wpa_s->wps_er, wpas_wps_terminate_cb, wpa_s);
1754                 wpa_s->wps_er = NULL;
1755                 return 1;
1756         }
1757 #endif /* CONFIG_WPS_ER */
1758         return 0;
1759 }
1760
1761
1762 int wpas_wps_in_progress(struct wpa_supplicant *wpa_s)
1763 {
1764         struct wpa_ssid *ssid;
1765
1766         for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1767                 if (!ssid->disabled && ssid->key_mgmt == WPA_KEY_MGMT_WPS)
1768                         return 1;
1769         }
1770
1771         return 0;
1772 }
1773
1774
1775 void wpas_wps_update_config(struct wpa_supplicant *wpa_s)
1776 {
1777         struct wps_context *wps = wpa_s->wps;
1778
1779         if (wps == NULL)
1780                 return;
1781
1782         if (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS) {
1783                 wps->config_methods = wps_config_methods_str2bin(
1784                         wpa_s->conf->config_methods);
1785                 if ((wps->config_methods &
1786                      (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) ==
1787                     (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
1788                         wpa_printf(MSG_ERROR, "WPS: Both Label and Display "
1789                                    "config methods are not allowed at the "
1790                                    "same time");
1791                         wps->config_methods &= ~WPS_CONFIG_LABEL;
1792                 }
1793         }
1794         wps->config_methods = wps_fix_config_methods(wps->config_methods);
1795         wps->dev.config_methods = wps->config_methods;
1796
1797         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
1798                 os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type,
1799                           WPS_DEV_TYPE_LEN);
1800
1801         if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE) {
1802                 wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
1803                 os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type,
1804                           wps->dev.num_sec_dev_types * WPS_DEV_TYPE_LEN);
1805         }
1806
1807         if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION)
1808                 wpas_wps_set_vendor_ext_m1(wpa_s, wps);
1809
1810         if (wpa_s->conf->changed_parameters & CFG_CHANGED_OS_VERSION)
1811                 wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
1812
1813         if (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID)
1814                 wpas_wps_set_uuid(wpa_s, wps);
1815
1816         if (wpa_s->conf->changed_parameters &
1817             (CFG_CHANGED_DEVICE_NAME | CFG_CHANGED_WPS_STRING)) {
1818                 /* Update pointers to make sure they refer current values */
1819                 wps->dev.device_name = wpa_s->conf->device_name;
1820                 wps->dev.manufacturer = wpa_s->conf->manufacturer;
1821                 wps->dev.model_name = wpa_s->conf->model_name;
1822                 wps->dev.model_number = wpa_s->conf->model_number;
1823                 wps->dev.serial_number = wpa_s->conf->serial_number;
1824         }
1825 }
1826
1827
1828 #ifdef CONFIG_WPS_NFC
1829
1830 struct wpabuf * wpas_wps_nfc_token(struct wpa_supplicant *wpa_s, int ndef)
1831 {
1832         return wps_nfc_token_gen(ndef, &wpa_s->conf->wps_nfc_dev_pw_id,
1833                                  &wpa_s->conf->wps_nfc_dh_pubkey,
1834                                  &wpa_s->conf->wps_nfc_dh_privkey,
1835                                  &wpa_s->conf->wps_nfc_dev_pw);
1836 }
1837
1838
1839 int wpas_wps_start_nfc(struct wpa_supplicant *wpa_s, const u8 *bssid)
1840 {
1841         struct wps_context *wps = wpa_s->wps;
1842         char pw[32 * 2 + 1];
1843
1844         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL ||
1845             wpa_s->conf->wps_nfc_dh_privkey == NULL ||
1846             wpa_s->conf->wps_nfc_dev_pw == NULL)
1847                 return -1;
1848
1849         dh5_free(wps->dh_ctx);
1850         wpabuf_free(wps->dh_pubkey);
1851         wpabuf_free(wps->dh_privkey);
1852         wps->dh_privkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
1853         wps->dh_pubkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
1854         if (wps->dh_privkey == NULL || wps->dh_pubkey == NULL) {
1855                 wps->dh_ctx = NULL;
1856                 wpabuf_free(wps->dh_pubkey);
1857                 wps->dh_pubkey = NULL;
1858                 wpabuf_free(wps->dh_privkey);
1859                 wps->dh_privkey = NULL;
1860                 return -1;
1861         }
1862         wps->dh_ctx = dh5_init_fixed(wps->dh_privkey, wps->dh_pubkey);
1863         if (wps->dh_ctx == NULL)
1864                 return -1;
1865
1866         wpa_snprintf_hex_uppercase(pw, sizeof(pw),
1867                                    wpabuf_head(wpa_s->conf->wps_nfc_dev_pw),
1868                                    wpabuf_len(wpa_s->conf->wps_nfc_dev_pw));
1869         return wpas_wps_start_pin(wpa_s, bssid, pw, 0,
1870                                   wpa_s->conf->wps_nfc_dev_pw_id);
1871 }
1872
1873
1874 static int wpas_wps_use_cred(struct wpa_supplicant *wpa_s,
1875                              struct wps_parse_attr *attr)
1876 {
1877         wpa_s->wps_ap_channel = 0;
1878
1879         if (wps_oob_use_cred(wpa_s->wps, attr) < 0)
1880                 return -1;
1881
1882         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
1883                 return 0;
1884
1885         wpa_printf(MSG_DEBUG, "WPS: Request reconnection with new network "
1886                    "based on the received credential added");
1887         wpa_s->normal_scans = 0;
1888         wpa_supplicant_reinit_autoscan(wpa_s);
1889         if (wpa_s->wps_ap_channel) {
1890                 u16 chan = wpa_s->wps_ap_channel;
1891                 int freq = 0;
1892
1893                 if (chan >= 1 && chan <= 13)
1894                         freq = 2407 + 5 * chan;
1895                 else if (chan == 14)
1896                         freq = 2484;
1897                 else if (chan >= 30)
1898                         freq = 5000 + 5 * chan;
1899
1900                 if (freq) {
1901                         wpa_printf(MSG_DEBUG, "WPS: Credential indicated "
1902                                    "AP channel %u -> %u MHz", chan, freq);
1903                         wpa_s->after_wps = 5;
1904                         wpa_s->wps_freq = freq;
1905                 }
1906         }
1907         wpa_s->disconnected = 0;
1908         wpa_s->reassociate = 1;
1909         wpa_supplicant_req_scan(wpa_s, 0, 0);
1910
1911         return 0;
1912 }
1913
1914
1915 #ifdef CONFIG_WPS_ER
1916 static int wpas_wps_add_nfc_password_token(struct wpa_supplicant *wpa_s,
1917                                            struct wps_parse_attr *attr)
1918 {
1919         return wps_registrar_add_nfc_password_token(
1920                 wpa_s->wps->registrar, attr->oob_dev_password,
1921                 attr->oob_dev_password_len);
1922 }
1923 #endif /* CONFIG_WPS_ER */
1924
1925
1926 static int wpas_wps_nfc_tag_process(struct wpa_supplicant *wpa_s,
1927                                     const struct wpabuf *wps)
1928 {
1929         struct wps_parse_attr attr;
1930
1931         wpa_hexdump_buf(MSG_DEBUG, "WPS: Received NFC tag payload", wps);
1932
1933         if (wps_parse_msg(wps, &attr)) {
1934                 wpa_printf(MSG_DEBUG, "WPS: Ignore invalid data from NFC tag");
1935                 return -1;
1936         }
1937
1938         if (attr.num_cred)
1939                 return wpas_wps_use_cred(wpa_s, &attr);
1940
1941 #ifdef CONFIG_WPS_ER
1942         if (attr.oob_dev_password)
1943                 return wpas_wps_add_nfc_password_token(wpa_s, &attr);
1944 #endif /* CONFIG_WPS_ER */
1945
1946         wpa_printf(MSG_DEBUG, "WPS: Ignore unrecognized NFC tag");
1947         return -1;
1948 }
1949
1950
1951 int wpas_wps_nfc_tag_read(struct wpa_supplicant *wpa_s,
1952                           const struct wpabuf *data)
1953 {
1954         const struct wpabuf *wps = data;
1955         struct wpabuf *tmp = NULL;
1956         int ret;
1957
1958         if (wpabuf_len(data) < 4)
1959                 return -1;
1960
1961         if (*wpabuf_head_u8(data) != 0x10) {
1962                 /* Assume this contains full NDEF record */
1963                 tmp = ndef_parse_wifi(data);
1964                 if (tmp == NULL) {
1965                         wpa_printf(MSG_DEBUG, "WPS: Could not parse NDEF");
1966                         return -1;
1967                 }
1968                 wps = tmp;
1969         }
1970
1971         ret = wpas_wps_nfc_tag_process(wpa_s, wps);
1972         wpabuf_free(tmp);
1973         return ret;
1974 }
1975
1976
1977 struct wpabuf * wpas_wps_nfc_handover_req(struct wpa_supplicant *wpa_s)
1978 {
1979         return ndef_build_wifi_hr();
1980 }
1981
1982
1983 struct wpabuf * wpas_wps_nfc_handover_sel(struct wpa_supplicant *wpa_s)
1984 {
1985         return NULL;
1986 }
1987
1988
1989 int wpas_wps_nfc_rx_handover_req(struct wpa_supplicant *wpa_s,
1990                                  const struct wpabuf *data)
1991 {
1992         /* TODO */
1993         return -1;
1994 }
1995
1996
1997 int wpas_wps_nfc_rx_handover_sel(struct wpa_supplicant *wpa_s,
1998                                  const struct wpabuf *data)
1999 {
2000         struct wpabuf *wps;
2001         int ret;
2002
2003         wps = ndef_parse_wifi(data);
2004         if (wps == NULL)
2005                 return -1;
2006         wpa_printf(MSG_DEBUG, "WPS: Received application/vnd.wfa.wsc "
2007                    "payload from NFC connection handover");
2008         wpa_hexdump_buf_key(MSG_DEBUG, "WPS: NFC payload", wps);
2009         ret = wpas_wps_nfc_tag_process(wpa_s, wps);
2010         wpabuf_free(wps);
2011
2012         return ret;
2013 }
2014
2015 #endif /* CONFIG_WPS_NFC */
2016
2017
2018 extern int wpa_debug_level;
2019
2020 static void wpas_wps_dump_ap_info(struct wpa_supplicant *wpa_s)
2021 {
2022         size_t i;
2023         struct os_time now;
2024
2025         if (wpa_debug_level > MSG_DEBUG)
2026                 return;
2027
2028         if (wpa_s->wps_ap == NULL)
2029                 return;
2030
2031         os_get_time(&now);
2032
2033         for (i = 0; i < wpa_s->num_wps_ap; i++) {
2034                 struct wps_ap_info *ap = &wpa_s->wps_ap[i];
2035                 struct wpa_blacklist *e = wpa_blacklist_get(wpa_s, ap->bssid);
2036
2037                 wpa_printf(MSG_DEBUG, "WPS: AP[%d] " MACSTR " type=%d "
2038                            "tries=%d last_attempt=%d sec ago blacklist=%d",
2039                            (int) i, MAC2STR(ap->bssid), ap->type, ap->tries,
2040                            ap->last_attempt.sec > 0 ?
2041                            (int) now.sec - (int) ap->last_attempt.sec : -1,
2042                            e ? e->count : 0);
2043         }
2044 }
2045
2046
2047 static struct wps_ap_info * wpas_wps_get_ap_info(struct wpa_supplicant *wpa_s,
2048                                                  const u8 *bssid)
2049 {
2050         size_t i;
2051
2052         if (wpa_s->wps_ap == NULL)
2053                 return NULL;
2054
2055         for (i = 0; i < wpa_s->num_wps_ap; i++) {
2056                 struct wps_ap_info *ap = &wpa_s->wps_ap[i];
2057                 if (os_memcmp(ap->bssid, bssid, ETH_ALEN) == 0)
2058                         return ap;
2059         }
2060
2061         return NULL;
2062 }
2063
2064
2065 static void wpas_wps_update_ap_info_bss(struct wpa_supplicant *wpa_s,
2066                                         struct wpa_scan_res *res)
2067 {
2068         struct wpabuf *wps;
2069         enum wps_ap_info_type type;
2070         struct wps_ap_info *ap;
2071         int r;
2072
2073         if (wpa_scan_get_vendor_ie(res, WPS_IE_VENDOR_TYPE) == NULL)
2074                 return;
2075
2076         wps = wpa_scan_get_vendor_ie_multi(res, WPS_IE_VENDOR_TYPE);
2077         if (wps == NULL)
2078                 return;
2079
2080         r = wps_is_addr_authorized(wps, wpa_s->own_addr, 1);
2081         if (r == 2)
2082                 type = WPS_AP_SEL_REG_OUR;
2083         else if (r == 1)
2084                 type = WPS_AP_SEL_REG;
2085         else
2086                 type = WPS_AP_NOT_SEL_REG;
2087
2088         wpabuf_free(wps);
2089
2090         ap = wpas_wps_get_ap_info(wpa_s, res->bssid);
2091         if (ap) {
2092                 if (ap->type != type) {
2093                         wpa_printf(MSG_DEBUG, "WPS: AP " MACSTR
2094                                    " changed type %d -> %d",
2095                                    MAC2STR(res->bssid), ap->type, type);
2096                         ap->type = type;
2097                         if (type != WPS_AP_NOT_SEL_REG)
2098                                 wpa_blacklist_del(wpa_s, ap->bssid);
2099                 }
2100                 return;
2101         }
2102
2103         ap = os_realloc_array(wpa_s->wps_ap, wpa_s->num_wps_ap + 1,
2104                               sizeof(struct wps_ap_info));
2105         if (ap == NULL)
2106                 return;
2107
2108         wpa_s->wps_ap = ap;
2109         ap = &wpa_s->wps_ap[wpa_s->num_wps_ap];
2110         wpa_s->num_wps_ap++;
2111
2112         os_memset(ap, 0, sizeof(*ap));
2113         os_memcpy(ap->bssid, res->bssid, ETH_ALEN);
2114         ap->type = type;
2115         wpa_printf(MSG_DEBUG, "WPS: AP " MACSTR " type %d added",
2116                    MAC2STR(ap->bssid), ap->type);
2117 }
2118
2119
2120 void wpas_wps_update_ap_info(struct wpa_supplicant *wpa_s,
2121                              struct wpa_scan_results *scan_res)
2122 {
2123         size_t i;
2124
2125         for (i = 0; i < scan_res->num; i++)
2126                 wpas_wps_update_ap_info_bss(wpa_s, scan_res->res[i]);
2127
2128         wpas_wps_dump_ap_info(wpa_s);
2129 }
2130
2131
2132 void wpas_wps_notify_assoc(struct wpa_supplicant *wpa_s, const u8 *bssid)
2133 {
2134         struct wps_ap_info *ap;
2135         if (!wpa_s->wps_ap_iter)
2136                 return;
2137         ap = wpas_wps_get_ap_info(wpa_s, bssid);
2138         if (ap == NULL)
2139                 return;
2140         ap->tries++;
2141         os_get_time(&ap->last_attempt);
2142 }