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 int wpas_wps_eapol_cb(struct wpa_supplicant *wpa_s)
  47 {
  48         if (!wpa_s->wps_success &&
  49             wpa_s->current_ssid &&
  50             eap_is_wps_pin_enrollee(&wpa_s->current_ssid->eap)) {
  51                 const u8 *bssid = wpa_s->bssid;
  52                 if (is_zero_ether_addr(bssid))
  53                         bssid = wpa_s->pending_bssid;
  54
  55                 wpa_printf(MSG_DEBUG, "WPS: PIN registration with " MACSTR
  56                            " did not succeed - continue trying to find "
  57                            "suitable AP", MAC2STR(bssid));
  58                 wpa_blacklist_add(wpa_s, bssid);
  59
  60                 wpa_supplicant_deauthenticate(wpa_s,
  61                                               WLAN_REASON_DEAUTH_LEAVING);
  62                 wpa_s->reassociate = 1;
  63                 wpa_supplicant_req_scan(wpa_s,
  64                                         wpa_s->blacklist_cleared ? 5 : 0, 0);
  65                 wpa_s->blacklist_cleared = 0;
  66                 return 1;
  67         }
  68
  69         eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
  70         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && !wpa_s->wps_success)
  71                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_FAIL);
  72
  73         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && wpa_s->current_ssid &&
  74             !(wpa_s->current_ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
  75                 int disabled = wpa_s->current_ssid->disabled;
  76                 unsigned int freq = wpa_s->assoc_freq;
  77                 wpa_printf(MSG_DEBUG, "WPS: Network configuration replaced - "
  78                            "try to associate with the received credential "
  79                            "(freq=%u)", freq);
  80                 wpa_supplicant_deauthenticate(wpa_s,
  81                                               WLAN_REASON_DEAUTH_LEAVING);
  82                 if (disabled) {
  83                         wpa_printf(MSG_DEBUG, "WPS: Current network is "
  84                                    "disabled - wait for user to enable");
  85                         return 1;
  86                 }
  87                 wpa_s->after_wps = 5;
  88                 wpa_s->wps_freq = freq;
  89                 wpa_s->normal_scans = 0;
  90                 wpa_s->reassociate = 1;
  91                 wpa_supplicant_req_scan(wpa_s, 0, 0);
  92                 return 1;
  93         }
  94
  95         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && wpa_s->current_ssid) {
  96                 wpa_printf(MSG_DEBUG, "WPS: Registration completed - waiting "
  97                            "for external credential processing");
  98                 wpas_clear_wps(wpa_s);
  99                 wpa_supplicant_deauthenticate(wpa_s,
 100                                               WLAN_REASON_DEAUTH_LEAVING);
 101                 return 1;
 102         }
 103
 104         return 0;
 105 }
 106
 107
 108 static void wpas_wps_security_workaround(struct wpa_supplicant *wpa_s,
 109                                          struct wpa_ssid *ssid,
 110                                          const struct wps_credential *cred)
 111 {
 112         struct wpa_driver_capa capa;
 113         struct wpa_bss *bss;
 114         const u8 *ie;
 115         struct wpa_ie_data adv;
 116         int wpa2 = 0, ccmp = 0;
 117
 118         /*
 119          * Many existing WPS APs do not know how to negotiate WPA2 or CCMP in
 120          * case they are configured for mixed mode operation (WPA+WPA2 and
 121          * TKIP+CCMP). Try to use scan results to figure out whether the AP
 122          * actually supports stronger security and select that if the client
 123          * has support for it, too.
 124          */
 125
 126         if (wpa_drv_get_capa(wpa_s, &capa))
 127                 return; /* Unknown what driver supports */
 128
 129         if (ssid->ssid == NULL)
 130                 return;
 131         bss = wpa_bss_get(wpa_s, cred->mac_addr, ssid->ssid, ssid->ssid_len);
 132         if (bss == NULL) {
 133                 wpa_printf(MSG_DEBUG, "WPS: The AP was not found from BSS "
 134                            "table - use credential as-is");
 135                 return;
 136         }
 137
 138         wpa_printf(MSG_DEBUG, "WPS: AP found from BSS table");
 139
 140         ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
 141         if (ie && wpa_parse_wpa_ie(ie, 2 + ie[1], &adv) == 0) {
 142                 wpa2 = 1;
 143                 if (adv.pairwise_cipher & WPA_CIPHER_CCMP)
 144                         ccmp = 1;
 145         } else {
 146                 ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 147                 if (ie && wpa_parse_wpa_ie(ie, 2 + ie[1], &adv) == 0 &&
 148                     adv.pairwise_cipher & WPA_CIPHER_CCMP)
 149                         ccmp = 1;
 150         }
 151
 152         if (ie == NULL && (ssid->proto & WPA_PROTO_WPA) &&
 153             (ssid->pairwise_cipher & WPA_CIPHER_TKIP)) {
 154                 /*
 155                  * TODO: This could be the initial AP configuration and the
 156                  * Beacon contents could change shortly. Should request a new
 157                  * scan and delay addition of the network until the updated
 158                  * scan results are available.
 159                  */
 160                 wpa_printf(MSG_DEBUG, "WPS: The AP did not yet advertise WPA "
 161                            "support - use credential as-is");
 162                 return;
 163         }
 164
 165         if (ccmp && !(ssid->pairwise_cipher & WPA_CIPHER_CCMP) &&
 166             (ssid->pairwise_cipher & WPA_CIPHER_TKIP) &&
 167             (capa.key_mgmt & WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK)) {
 168                 wpa_printf(MSG_DEBUG, "WPS: Add CCMP into the credential "
 169                            "based on scan results");
 170                 if (wpa_s->conf->ap_scan == 1)
 171                         ssid->pairwise_cipher |= WPA_CIPHER_CCMP;
 172                 else
 173                         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
 174         }
 175
 176         if (wpa2 && !(ssid->proto & WPA_PROTO_RSN) &&
 177             (ssid->proto & WPA_PROTO_WPA) &&
 178             (capa.enc & WPA_DRIVER_CAPA_ENC_CCMP)) {
 179                 wpa_printf(MSG_DEBUG, "WPS: Add WPA2 into the credential "
 180                            "based on scan results");
 181                 if (wpa_s->conf->ap_scan == 1)
 182                         ssid->proto |= WPA_PROTO_RSN;
 183                 else
 184                         ssid->proto = WPA_PROTO_RSN;
 185         }
 186 }
 187
 188
 189 static int wpa_supplicant_wps_cred(void *ctx,
 190                                    const struct wps_credential *cred)
 191 {
 192         struct wpa_supplicant *wpa_s = ctx;
 193         struct wpa_ssid *ssid = wpa_s->current_ssid;
 194         u8 key_idx = 0;
 195         u16 auth_type;
 196 #ifdef CONFIG_WPS_REG_DISABLE_OPEN
 197         int registrar = 0;
 198 #endif /* CONFIG_WPS_REG_DISABLE_OPEN */
 199
 200         if ((wpa_s->conf->wps_cred_processing == 1 ||
 201              wpa_s->conf->wps_cred_processing == 2) && cred->cred_attr) {
 202                 size_t blen = cred->cred_attr_len * 2 + 1;
 203                 char *buf = os_malloc(blen);
 204                 if (buf) {
 205                         wpa_snprintf_hex(buf, blen,
 206                                          cred->cred_attr, cred->cred_attr_len);
 207                         wpa_msg(wpa_s, MSG_INFO, "%s%s",
 208                                 WPS_EVENT_CRED_RECEIVED, buf);
 209                         os_free(buf);
 210                 }
 211
 212                 wpas_notify_wps_credential(wpa_s, cred);
 213         } else
 214                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_CRED_RECEIVED);
 215
 216         wpa_hexdump_key(MSG_DEBUG, "WPS: Received Credential attribute",
 217                         cred->cred_attr, cred->cred_attr_len);
 218
 219         if (wpa_s->conf->wps_cred_processing == 1)
 220                 return 0;
 221
 222         wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID", cred->ssid, cred->ssid_len);
 223         wpa_printf(MSG_DEBUG, "WPS: Authentication Type 0x%x",
 224                    cred->auth_type);
 225         wpa_printf(MSG_DEBUG, "WPS: Encryption Type 0x%x", cred->encr_type);
 226         wpa_printf(MSG_DEBUG, "WPS: Network Key Index %d", cred->key_idx);
 227         wpa_hexdump_key(MSG_DEBUG, "WPS: Network Key",
 228                         cred->key, cred->key_len);
 229         wpa_printf(MSG_DEBUG, "WPS: MAC Address " MACSTR,
 230                    MAC2STR(cred->mac_addr));
 231
 232         auth_type = cred->auth_type;
 233         if (auth_type == (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) {
 234                 wpa_printf(MSG_DEBUG, "WPS: Workaround - convert mixed-mode "
 235                            "auth_type into WPA2PSK");
 236                 auth_type = WPS_AUTH_WPA2PSK;
 237         }
 238
 239         if (auth_type != WPS_AUTH_OPEN &&
 240             auth_type != WPS_AUTH_SHARED &&
 241             auth_type != WPS_AUTH_WPAPSK &&
 242             auth_type != WPS_AUTH_WPA2PSK) {
 243                 wpa_printf(MSG_DEBUG, "WPS: Ignored credentials for "
 244                            "unsupported authentication type 0x%x",
 245                            auth_type);
 246                 return 0;
 247         }
 248
 249         if (ssid && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
 250                 wpa_printf(MSG_DEBUG, "WPS: Replace WPS network block based "
 251                            "on the received credential");
 252 #ifdef CONFIG_WPS_REG_DISABLE_OPEN
 253                 if (ssid->eap.identity &&
 254                     ssid->eap.identity_len == WSC_ID_REGISTRAR_LEN &&
 255                     os_memcmp(ssid->eap.identity, WSC_ID_REGISTRAR,
 256                               WSC_ID_REGISTRAR_LEN) == 0)
 257                         registrar = 1;
 258 #endif /* CONFIG_WPS_REG_DISABLE_OPEN */
 259                 os_free(ssid->eap.identity);
 260                 ssid->eap.identity = NULL;
 261                 ssid->eap.identity_len = 0;
 262                 os_free(ssid->eap.phase1);
 263                 ssid->eap.phase1 = NULL;
 264                 os_free(ssid->eap.eap_methods);
 265                 ssid->eap.eap_methods = NULL;
 266                 if (!ssid->p2p_group) {
 267                         ssid->temporary = 0;
 268                         ssid->bssid_set = 0;
 269                 }
 270         } else {
 271                 wpa_printf(MSG_DEBUG, "WPS: Create a new network based on the "
 272                            "received credential");
 273                 ssid = wpa_config_add_network(wpa_s->conf);
 274                 if (ssid == NULL)
 275                         return -1;
 276                 wpas_notify_network_added(wpa_s, ssid);
 277         }
 278
 279         wpa_config_set_network_defaults(ssid);
 280
 281         os_free(ssid->ssid);
 282         ssid->ssid = os_malloc(cred->ssid_len);
 283         if (ssid->ssid) {
 284                 os_memcpy(ssid->ssid, cred->ssid, cred->ssid_len);
 285                 ssid->ssid_len = cred->ssid_len;
 286         }
 287
 288         switch (cred->encr_type) {
 289         case WPS_ENCR_NONE:
 290                 break;
 291         case WPS_ENCR_WEP:
 292                 if (cred->key_len <= 0)
 293                         break;
 294                 if (cred->key_len != 5 && cred->key_len != 13 &&
 295                     cred->key_len != 10 && cred->key_len != 26) {
 296                         wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key length "
 297                                    "%lu", (unsigned long) cred->key_len);
 298                         return -1;
 299                 }
 300                 if (cred->key_idx > NUM_WEP_KEYS) {
 301                         wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key index %d",
 302                                    cred->key_idx);
 303                         return -1;
 304                 }
 305                 if (cred->key_idx)
 306                         key_idx = cred->key_idx - 1;
 307                 if (cred->key_len == 10 || cred->key_len == 26) {
 308                         if (hexstr2bin((char *) cred->key,
 309                                        ssid->wep_key[key_idx],
 310                                        cred->key_len / 2) < 0) {
 311                                 wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key "
 312                                            "%d", key_idx);
 313                                 return -1;
 314                         }
 315                         ssid->wep_key_len[key_idx] = cred->key_len / 2;
 316                 } else {
 317                         os_memcpy(ssid->wep_key[key_idx], cred->key,
 318                                   cred->key_len);
 319                         ssid->wep_key_len[key_idx] = cred->key_len;
 320                 }
 321                 ssid->wep_tx_keyidx = key_idx;
 322                 break;
 323         case WPS_ENCR_TKIP:
 324                 ssid->pairwise_cipher = WPA_CIPHER_TKIP;
 325                 break;
 326         case WPS_ENCR_AES:
 327                 ssid->pairwise_cipher = WPA_CIPHER_CCMP;
 328                 break;
 329         }
 330
 331         switch (auth_type) {
 332         case WPS_AUTH_OPEN:
 333                 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 334                 ssid->key_mgmt = WPA_KEY_MGMT_NONE;
 335                 ssid->proto = 0;
 336 #ifdef CONFIG_WPS_REG_DISABLE_OPEN
 337                 if (registrar) {
 338                         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OPEN_NETWORK
 339                                 "id=%d - Credentials for an open "
 340                                 "network disabled by default - use "
 341                                 "'select_network %d' to enable",
 342                                 ssid->id, ssid->id);
 343                         ssid->disabled = 1;
 344                 }
 345 #endif /* CONFIG_WPS_REG_DISABLE_OPEN */
 346                 break;
 347         case WPS_AUTH_SHARED:
 348                 ssid->auth_alg = WPA_AUTH_ALG_SHARED;
 349                 ssid->key_mgmt = WPA_KEY_MGMT_NONE;
 350                 ssid->proto = 0;
 351                 break;
 352         case WPS_AUTH_WPAPSK:
 353                 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 354                 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
 355                 ssid->proto = WPA_PROTO_WPA;
 356                 break;
 357         case WPS_AUTH_WPA:
 358                 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 359                 ssid->key_mgmt = WPA_KEY_MGMT_IEEE8021X;
 360                 ssid->proto = WPA_PROTO_WPA;
 361                 break;
 362         case WPS_AUTH_WPA2:
 363                 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 364                 ssid->key_mgmt = WPA_KEY_MGMT_IEEE8021X;
 365                 ssid->proto = WPA_PROTO_RSN;
 366                 break;
 367         case WPS_AUTH_WPA2PSK:
 368                 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 369                 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
 370                 ssid->proto = WPA_PROTO_RSN;
 371                 break;
 372         }
 373
 374         if (ssid->key_mgmt == WPA_KEY_MGMT_PSK) {
 375                 if (cred->key_len == 2 * PMK_LEN) {
 376                         if (hexstr2bin((const char *) cred->key, ssid->psk,
 377                                        PMK_LEN)) {
 378                                 wpa_printf(MSG_ERROR, "WPS: Invalid Network "
 379                                            "Key");
 380                                 return -1;
 381                         }
 382                         ssid->psk_set = 1;
 383                         ssid->export_keys = 1;
 384                 } else if (cred->key_len >= 8 && cred->key_len < 2 * PMK_LEN) {
 385                         os_free(ssid->passphrase);
 386                         ssid->passphrase = os_malloc(cred->key_len + 1);
 387                         if (ssid->passphrase == NULL)
 388                                 return -1;
 389                         os_memcpy(ssid->passphrase, cred->key, cred->key_len);
 390                         ssid->passphrase[cred->key_len] = '\0';
 391                         wpa_config_update_psk(ssid);
 392                         ssid->export_keys = 1;
 393                 } else {
 394                         wpa_printf(MSG_ERROR, "WPS: Invalid Network Key "
 395                                    "length %lu",
 396                                    (unsigned long) cred->key_len);
 397                         return -1;
 398                 }
 399         }
 400
 401         wpas_wps_security_workaround(wpa_s, ssid, cred);
 402
 403 #ifndef CONFIG_NO_CONFIG_WRITE
 404         if (wpa_s->conf->update_config &&
 405             wpa_config_write(wpa_s->confname, wpa_s->conf)) {
 406                 wpa_printf(MSG_DEBUG, "WPS: Failed to update configuration");
 407                 return -1;
 408         }
 409 #endif /* CONFIG_NO_CONFIG_WRITE */
 410
 411         return 0;
 412 }
 413
 414
 415 #ifdef CONFIG_P2P
 416 static void wpas_wps_pbc_overlap_cb(void *eloop_ctx, void *timeout_ctx)
 417 {
 418         struct wpa_supplicant *wpa_s = eloop_ctx;
 419         wpas_p2p_notif_pbc_overlap(wpa_s);
 420 }
 421 #endif /* CONFIG_P2P */
 422
 423
 424 static void wpa_supplicant_wps_event_m2d(struct wpa_supplicant *wpa_s,
 425                                          struct wps_event_m2d *m2d)
 426 {
 427         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_M2D
 428                 "dev_password_id=%d config_error=%d",
 429                 m2d->dev_password_id, m2d->config_error);
 430         wpas_notify_wps_event_m2d(wpa_s, m2d);
 431 #ifdef CONFIG_P2P
 432         if (wpa_s->parent && wpa_s->parent != wpa_s) {
 433                 wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_M2D
 434                         "dev_password_id=%d config_error=%d",
 435                         m2d->dev_password_id, m2d->config_error);
 436         }
 437         if (m2d->config_error == WPS_CFG_MULTIPLE_PBC_DETECTED) {
 438                 /*
 439                  * Notify P2P from eloop timeout to avoid issues with the
 440                  * interface getting removed while processing a message.
 441                  */
 442                 eloop_register_timeout(0, 0, wpas_wps_pbc_overlap_cb, wpa_s,
 443                                        NULL);
 444         }
 445 #endif /* CONFIG_P2P */
 446 }
 447
 448
 449 static const char * wps_event_fail_reason[NUM_WPS_EI_VALUES] = {
 450         "No Error", /* WPS_EI_NO_ERROR */
 451         "TKIP Only Prohibited", /* WPS_EI_SECURITY_TKIP_ONLY_PROHIBITED */
 452         "WEP Prohibited" /* WPS_EI_SECURITY_WEP_PROHIBITED */
 453 };
 454
 455 static void wpa_supplicant_wps_event_fail(struct wpa_supplicant *wpa_s,
 456                                           struct wps_event_fail *fail)
 457 {
 458         if (fail->error_indication > 0 &&
 459             fail->error_indication < NUM_WPS_EI_VALUES) {
 460                 wpa_msg(wpa_s, MSG_INFO,
 461                         WPS_EVENT_FAIL "msg=%d config_error=%d reason=%d (%s)",
 462                         fail->msg, fail->config_error, fail->error_indication,
 463                         wps_event_fail_reason[fail->error_indication]);
 464                 if (wpa_s->parent && wpa_s->parent != wpa_s)
 465                         wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_FAIL
 466                                 "msg=%d config_error=%d reason=%d (%s)",
 467                                 fail->msg, fail->config_error,
 468                                 fail->error_indication,
 469                                 wps_event_fail_reason[fail->error_indication]);
 470         } else {
 471                 wpa_msg(wpa_s, MSG_INFO,
 472                         WPS_EVENT_FAIL "msg=%d config_error=%d",
 473                         fail->msg, fail->config_error);
 474                 if (wpa_s->parent && wpa_s->parent != wpa_s)
 475                         wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_FAIL
 476                                 "msg=%d config_error=%d",
 477                                 fail->msg, fail->config_error);
 478         }
 479         wpas_clear_wps(wpa_s);
 480         wpas_notify_wps_event_fail(wpa_s, fail);
 481 #ifdef CONFIG_P2P
 482         wpas_p2p_wps_failed(wpa_s, fail);
 483 #endif /* CONFIG_P2P */
 484 }
 485
 486
 487 static void wpa_supplicant_wps_event_success(struct wpa_supplicant *wpa_s)
 488 {
 489         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_SUCCESS);
 490         wpa_s->wps_success = 1;
 491         wpas_notify_wps_event_success(wpa_s);
 492 #ifdef CONFIG_P2P
 493         wpas_p2p_wps_success(wpa_s, wpa_s->bssid, 0);
 494 #endif /* CONFIG_P2P */
 495 }
 496
 497
 498 static void wpa_supplicant_wps_event_er_ap_add(struct wpa_supplicant *wpa_s,
 499                                                struct wps_event_er_ap *ap)
 500 {
 501         char uuid_str[100];
 502         char dev_type[WPS_DEV_TYPE_BUFSIZE];
 503
 504         uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str));
 505         if (ap->pri_dev_type)
 506                 wps_dev_type_bin2str(ap->pri_dev_type, dev_type,
 507                                      sizeof(dev_type));
 508         else
 509                 dev_type[0] = '\0';
 510
 511         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_ADD "%s " MACSTR
 512                 " pri_dev_type=%s wps_state=%d |%s|%s|%s|%s|%s|%s|",
 513                 uuid_str, MAC2STR(ap->mac_addr), dev_type, ap->wps_state,
 514                 ap->friendly_name ? ap->friendly_name : "",
 515                 ap->manufacturer ? ap->manufacturer : "",
 516                 ap->model_description ? ap->model_description : "",
 517                 ap->model_name ? ap->model_name : "",
 518                 ap->manufacturer_url ? ap->manufacturer_url : "",
 519                 ap->model_url ? ap->model_url : "");
 520 }
 521
 522
 523 static void wpa_supplicant_wps_event_er_ap_remove(struct wpa_supplicant *wpa_s,
 524                                                   struct wps_event_er_ap *ap)
 525 {
 526         char uuid_str[100];
 527         uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str));
 528         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_REMOVE "%s", uuid_str);
 529 }
 530
 531
 532 static void wpa_supplicant_wps_event_er_enrollee_add(
 533         struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee)
 534 {
 535         char uuid_str[100];
 536         char dev_type[WPS_DEV_TYPE_BUFSIZE];
 537
 538         uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str));
 539         if (enrollee->pri_dev_type)
 540                 wps_dev_type_bin2str(enrollee->pri_dev_type, dev_type,
 541                                      sizeof(dev_type));
 542         else
 543                 dev_type[0] = '\0';
 544
 545         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_ADD "%s " MACSTR
 546                 " M1=%d config_methods=0x%x dev_passwd_id=%d pri_dev_type=%s "
 547                 "|%s|%s|%s|%s|%s|",
 548                 uuid_str, MAC2STR(enrollee->mac_addr), enrollee->m1_received,
 549                 enrollee->config_methods, enrollee->dev_passwd_id, dev_type,
 550                 enrollee->dev_name ? enrollee->dev_name : "",
 551                 enrollee->manufacturer ? enrollee->manufacturer : "",
 552                 enrollee->model_name ? enrollee->model_name : "",
 553                 enrollee->model_number ? enrollee->model_number : "",
 554                 enrollee->serial_number ? enrollee->serial_number : "");
 555 }
 556
 557
 558 static void wpa_supplicant_wps_event_er_enrollee_remove(
 559         struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee)
 560 {
 561         char uuid_str[100];
 562         uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str));
 563         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_REMOVE "%s " MACSTR,
 564                 uuid_str, MAC2STR(enrollee->mac_addr));
 565 }
 566
 567
 568 static void wpa_supplicant_wps_event_er_ap_settings(
 569         struct wpa_supplicant *wpa_s,
 570         struct wps_event_er_ap_settings *ap_settings)
 571 {
 572         char uuid_str[100];
 573         char key_str[65];
 574         const struct wps_credential *cred = ap_settings->cred;
 575
 576         key_str[0] = '\0';
 577         if (cred->auth_type & (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) {
 578                 if (cred->key_len >= 8 && cred->key_len <= 64) {
 579                         os_memcpy(key_str, cred->key, cred->key_len);
 580                         key_str[cred->key_len] = '\0';
 581                 }
 582         }
 583
 584         uuid_bin2str(ap_settings->uuid, uuid_str, sizeof(uuid_str));
 585         /* Use wpa_msg_ctrl to avoid showing the key in debug log */
 586         wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_SETTINGS
 587                      "uuid=%s ssid=%s auth_type=0x%04x encr_type=0x%04x "
 588                      "key=%s",
 589                      uuid_str, wpa_ssid_txt(cred->ssid, cred->ssid_len),
 590                      cred->auth_type, cred->encr_type, key_str);
 591 }
 592
 593
 594 static void wpa_supplicant_wps_event_er_set_sel_reg(
 595         struct wpa_supplicant *wpa_s,
 596         struct wps_event_er_set_selected_registrar *ev)
 597 {
 598         char uuid_str[100];
 599
 600         uuid_bin2str(ev->uuid, uuid_str, sizeof(uuid_str));
 601         switch (ev->state) {
 602         case WPS_ER_SET_SEL_REG_START:
 603                 wpa_msg(wpa_s, MSG_DEBUG, WPS_EVENT_ER_SET_SEL_REG
 604                         "uuid=%s state=START sel_reg=%d dev_passwd_id=%u "
 605                         "sel_reg_config_methods=0x%x",
 606                         uuid_str, ev->sel_reg, ev->dev_passwd_id,
 607                         ev->sel_reg_config_methods);
 608                 break;
 609         case WPS_ER_SET_SEL_REG_DONE:
 610                 wpa_msg(wpa_s, MSG_DEBUG, WPS_EVENT_ER_SET_SEL_REG
 611                         "uuid=%s state=DONE", uuid_str);
 612                 break;
 613         case WPS_ER_SET_SEL_REG_FAILED:
 614                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_SET_SEL_REG
 615                         "uuid=%s state=FAILED", uuid_str);
 616                 break;
 617         }
 618 }
 619
 620
 621 static void wpa_supplicant_wps_event(void *ctx, enum wps_event event,
 622                                      union wps_event_data *data)
 623 {
 624         struct wpa_supplicant *wpa_s = ctx;
 625         switch (event) {
 626         case WPS_EV_M2D:
 627                 wpa_supplicant_wps_event_m2d(wpa_s, &data->m2d);
 628                 break;
 629         case WPS_EV_FAIL:
 630                 wpa_supplicant_wps_event_fail(wpa_s, &data->fail);
 631                 break;
 632         case WPS_EV_SUCCESS:
 633                 wpa_supplicant_wps_event_success(wpa_s);
 634                 break;
 635         case WPS_EV_PWD_AUTH_FAIL:
 636 #ifdef CONFIG_AP
 637                 if (wpa_s->ap_iface && data->pwd_auth_fail.enrollee)
 638                         wpa_supplicant_ap_pwd_auth_fail(wpa_s);
 639 #endif /* CONFIG_AP */
 640                 break;
 641         case WPS_EV_PBC_OVERLAP:
 642                 break;
 643         case WPS_EV_PBC_TIMEOUT:
 644                 break;
 645         case WPS_EV_ER_AP_ADD:
 646                 wpa_supplicant_wps_event_er_ap_add(wpa_s, &data->ap);
 647                 break;
 648         case WPS_EV_ER_AP_REMOVE:
 649                 wpa_supplicant_wps_event_er_ap_remove(wpa_s, &data->ap);
 650                 break;
 651         case WPS_EV_ER_ENROLLEE_ADD:
 652                 wpa_supplicant_wps_event_er_enrollee_add(wpa_s,
 653                                                          &data->enrollee);
 654                 break;
 655         case WPS_EV_ER_ENROLLEE_REMOVE:
 656                 wpa_supplicant_wps_event_er_enrollee_remove(wpa_s,
 657                                                             &data->enrollee);
 658                 break;
 659         case WPS_EV_ER_AP_SETTINGS:
 660                 wpa_supplicant_wps_event_er_ap_settings(wpa_s,
 661                                                         &data->ap_settings);
 662                 break;
 663         case WPS_EV_ER_SET_SELECTED_REGISTRAR:
 664                 wpa_supplicant_wps_event_er_set_sel_reg(wpa_s,
 665                                                         &data->set_sel_reg);
 666                 break;
 667         case WPS_EV_AP_PIN_SUCCESS:
 668                 break;
 669         }
 670 }
 671
 672
 673 enum wps_request_type wpas_wps_get_req_type(struct wpa_ssid *ssid)
 674 {
 675         if (eap_is_wps_pbc_enrollee(&ssid->eap) ||
 676             eap_is_wps_pin_enrollee(&ssid->eap))
 677                 return WPS_REQ_ENROLLEE;
 678         else
 679                 return WPS_REQ_REGISTRAR;
 680 }
 681
 682
 683 static void wpas_clear_wps(struct wpa_supplicant *wpa_s)
 684 {
 685         int id;
 686         struct wpa_ssid *ssid, *remove_ssid = NULL, *prev_current;
 687
 688         prev_current = wpa_s->current_ssid;
 689
 690         eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
 691
 692         /* Remove any existing WPS network from configuration */
 693         ssid = wpa_s->conf->ssid;
 694         while (ssid) {
 695                 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
 696                         if (ssid == wpa_s->current_ssid) {
 697                                 wpa_s->current_ssid = NULL;
 698                                 if (ssid != NULL)
 699                                         wpas_notify_network_changed(wpa_s);
 700                         }
 701                         id = ssid->id;
 702                         remove_ssid = ssid;
 703                 } else
 704                         id = -1;
 705                 ssid = ssid->next;
 706                 if (id >= 0) {
 707                         if (prev_current == remove_ssid) {
 708                                 wpa_sm_set_config(wpa_s->wpa, NULL);
 709                                 eapol_sm_notify_config(wpa_s->eapol, NULL,
 710                                                        NULL);
 711                         }
 712                         wpas_notify_network_removed(wpa_s, remove_ssid);
 713                         wpa_config_remove_network(wpa_s->conf, id);
 714                 }
 715         }
 716 }
 717
 718
 719 static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx)
 720 {
 721         struct wpa_supplicant *wpa_s = eloop_ctx;
 722         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_TIMEOUT "Requested operation timed "
 723                 "out");
 724         wpas_clear_wps(wpa_s);
 725 }
 726
 727
 728 static struct wpa_ssid * wpas_wps_add_network(struct wpa_supplicant *wpa_s,
 729                                               int registrar, const u8 *bssid)
 730 {
 731         struct wpa_ssid *ssid;
 732
 733         ssid = wpa_config_add_network(wpa_s->conf);
 734         if (ssid == NULL)
 735                 return NULL;
 736         wpas_notify_network_added(wpa_s, ssid);
 737         wpa_config_set_network_defaults(ssid);
 738         ssid->temporary = 1;
 739         if (wpa_config_set(ssid, "key_mgmt", "WPS", 0) < 0 ||
 740             wpa_config_set(ssid, "eap", "WSC", 0) < 0 ||
 741             wpa_config_set(ssid, "identity", registrar ?
 742                            "\"" WSC_ID_REGISTRAR "\"" :
 743                            "\"" WSC_ID_ENROLLEE "\"", 0) < 0) {
 744                 wpas_notify_network_removed(wpa_s, ssid);
 745                 wpa_config_remove_network(wpa_s->conf, ssid->id);
 746                 return NULL;
 747         }
 748
 749         if (bssid) {
 750 #ifndef CONFIG_P2P
 751                 struct wpa_bss *bss;
 752                 int count = 0;
 753 #endif /* CONFIG_P2P */
 754
 755                 os_memcpy(ssid->bssid, bssid, ETH_ALEN);
 756                 ssid->bssid_set = 1;
 757
 758                 /*
 759                  * Note: With P2P, the SSID may change at the time the WPS
 760                  * provisioning is started, so better not filter the AP based
 761                  * on the current SSID in the scan results.
 762                  */
 763 #ifndef CONFIG_P2P
 764                 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
 765                         if (os_memcmp(bssid, bss->bssid, ETH_ALEN) != 0)
 766                                 continue;
 767
 768                         os_free(ssid->ssid);
 769                         ssid->ssid = os_malloc(bss->ssid_len);
 770                         if (ssid->ssid == NULL)
 771                                 break;
 772                         os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
 773                         ssid->ssid_len = bss->ssid_len;
 774                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Picked SSID from "
 775                                           "scan results",
 776                                           ssid->ssid, ssid->ssid_len);
 777                         count++;
 778                 }
 779
 780                 if (count > 1) {
 781                         wpa_printf(MSG_DEBUG, "WPS: More than one SSID found "
 782                                    "for the AP; use wildcard");
 783                         os_free(ssid->ssid);
 784                         ssid->ssid = NULL;
 785                         ssid->ssid_len = 0;
 786                 }
 787 #endif /* CONFIG_P2P */
 788         }
 789
 790         return ssid;
 791 }
 792
 793
 794 static void wpas_wps_reassoc(struct wpa_supplicant *wpa_s,
 795                              struct wpa_ssid *selected, const u8 *bssid)
 796 {
 797         struct wpa_ssid *ssid;
 798         struct wpa_bss *bss;
 799
 800         wpa_s->known_wps_freq = 0;
 801         if (bssid) {
 802                 bss = wpa_bss_get_bssid(wpa_s, bssid);
 803                 if (bss && bss->freq > 0) {
 804                         wpa_s->known_wps_freq = 1;
 805                         wpa_s->wps_freq = bss->freq;
 806                 }
 807         }
 808
 809         if (wpa_s->current_ssid)
 810                 wpa_supplicant_deauthenticate(
 811                         wpa_s, WLAN_REASON_DEAUTH_LEAVING);
 812
 813         /* Mark all other networks disabled and trigger reassociation */
 814         ssid = wpa_s->conf->ssid;
 815         while (ssid) {
 816                 int was_disabled = ssid->disabled;
 817                 /*
 818                  * In case the network object corresponds to a persistent group
 819                  * then do not send out network disabled signal. In addition,
 820                  * do not change disabled status of persistent network objects
 821                  * from 2 to 1 should we connect to another network.
 822                  */
 823                 if (was_disabled != 2) {
 824                         ssid->disabled = ssid != selected;
 825                         if (was_disabled != ssid->disabled)
 826                                 wpas_notify_network_enabled_changed(wpa_s,
 827                                                                     ssid);
 828                 }
 829                 ssid = ssid->next;
 830         }
 831         wpa_s->disconnected = 0;
 832         wpa_s->reassociate = 1;
 833         wpa_s->scan_runs = 0;
 834         wpa_s->normal_scans = 0;
 835         wpa_s->wps_success = 0;
 836         wpa_s->blacklist_cleared = 0;
 837         wpa_supplicant_req_scan(wpa_s, 0, 0);
 838 }
 839
 840
 841 int wpas_wps_start_pbc(struct wpa_supplicant *wpa_s, const u8 *bssid,
 842                        int p2p_group)
 843 {
 844         struct wpa_ssid *ssid;
 845         wpas_clear_wps(wpa_s);
 846         ssid = wpas_wps_add_network(wpa_s, 0, bssid);
 847         if (ssid == NULL)
 848                 return -1;
 849         ssid->temporary = 1;
 850         ssid->p2p_group = p2p_group;
 851 #ifdef CONFIG_P2P
 852         if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) {
 853                 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1);
 854                 if (ssid->ssid) {
 855                         ssid->ssid_len = wpa_s->go_params->ssid_len;
 856                         os_memcpy(ssid->ssid, wpa_s->go_params->ssid,
 857                                   ssid->ssid_len);
 858                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP "
 859                                           "SSID", ssid->ssid, ssid->ssid_len);
 860                 }
 861         }
 862 #endif /* CONFIG_P2P */
 863         wpa_config_set(ssid, "phase1", "\"pbc=1\"", 0);
 864         if (wpa_s->wps_fragment_size)
 865                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
 866         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
 867                                wpa_s, NULL);
 868         wpas_wps_reassoc(wpa_s, ssid, bssid);
 869         return 0;
 870 }
 871
 872
 873 int wpas_wps_start_pin(struct wpa_supplicant *wpa_s, const u8 *bssid,
 874                        const char *pin, int p2p_group, u16 dev_pw_id)
 875 {
 876         struct wpa_ssid *ssid;
 877         char val[128];
 878         unsigned int rpin = 0;
 879
 880         wpas_clear_wps(wpa_s);
 881         ssid = wpas_wps_add_network(wpa_s, 0, bssid);
 882         if (ssid == NULL)
 883                 return -1;
 884         ssid->temporary = 1;
 885         ssid->p2p_group = p2p_group;
 886 #ifdef CONFIG_P2P
 887         if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) {
 888                 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1);
 889                 if (ssid->ssid) {
 890                         ssid->ssid_len = wpa_s->go_params->ssid_len;
 891                         os_memcpy(ssid->ssid, wpa_s->go_params->ssid,
 892                                   ssid->ssid_len);
 893                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP "
 894                                           "SSID", ssid->ssid, ssid->ssid_len);
 895                 }
 896         }
 897 #endif /* CONFIG_P2P */
 898         if (pin)
 899                 os_snprintf(val, sizeof(val), "\"pin=%s dev_pw_id=%u\"",
 900                             pin, dev_pw_id);
 901         else {
 902                 rpin = wps_generate_pin();
 903                 os_snprintf(val, sizeof(val), "\"pin=%08d dev_pw_id=%u\"",
 904                             rpin, dev_pw_id);
 905         }
 906         wpa_config_set(ssid, "phase1", val, 0);
 907         if (wpa_s->wps_fragment_size)
 908                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
 909         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
 910                                wpa_s, NULL);
 911         wpas_wps_reassoc(wpa_s, ssid, bssid);
 912         return rpin;
 913 }
 914
 915
 916 /* Cancel the wps pbc/pin requests */
 917 int wpas_wps_cancel(struct wpa_supplicant *wpa_s)
 918 {
 919 #ifdef CONFIG_AP
 920         if (wpa_s->ap_iface) {
 921                 wpa_printf(MSG_DEBUG, "WPS: Cancelling in AP mode");
 922                 return wpa_supplicant_ap_wps_cancel(wpa_s);
 923         }
 924 #endif /* CONFIG_AP */
 925
 926         if (wpa_s->wpa_state == WPA_SCANNING ||
 927             wpa_s->wpa_state == WPA_DISCONNECTED) {
 928                 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - cancel scan");
 929                 wpa_supplicant_cancel_scan(wpa_s);
 930                 wpas_clear_wps(wpa_s);
 931         } else if (wpa_s->wpa_state >= WPA_ASSOCIATED) {
 932                 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - "
 933                            "deauthenticate");
 934                 wpa_supplicant_deauthenticate(wpa_s,
 935                                               WLAN_REASON_DEAUTH_LEAVING);
 936                 wpas_clear_wps(wpa_s);
 937         }
 938
 939         return 0;
 940 }
 941
 942
 943 #ifdef CONFIG_WPS_OOB
 944 int wpas_wps_start_oob(struct wpa_supplicant *wpa_s, char *device_type,
 945                        char *path, char *method, char *name)
 946 {
 947         struct wps_context *wps = wpa_s->wps;
 948         struct oob_device_data *oob_dev;
 949
 950         oob_dev = wps_get_oob_device(device_type);
 951         if (oob_dev == NULL)
 952                 return -1;
 953         oob_dev->device_path = path;
 954         oob_dev->device_name = name;
 955         wps->oob_conf.oob_method = wps_get_oob_method(method);
 956
 957         if (wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_E) {
 958                 /*
 959                  * Use pre-configured DH keys in order to be able to write the
 960                  * key hash into the OOB file.
 961                  */
 962                 wpabuf_free(wps->dh_pubkey);
 963                 wpabuf_free(wps->dh_privkey);
 964                 wps->dh_privkey = NULL;
 965                 wps->dh_pubkey = NULL;
 966                 dh5_free(wps->dh_ctx);
 967                 wps->dh_ctx = dh5_init(&wps->dh_privkey, &wps->dh_pubkey);
 968                 wps->dh_pubkey = wpabuf_zeropad(wps->dh_pubkey, 192);
 969                 if (wps->dh_ctx == NULL || wps->dh_pubkey == NULL) {
 970                         wpa_printf(MSG_ERROR, "WPS: Failed to initialize "
 971                                    "Diffie-Hellman handshake");
 972                         return -1;
 973                 }
 974         }
 975
 976         if (wps->oob_conf.oob_method == OOB_METHOD_CRED)
 977                 wpas_clear_wps(wpa_s);
 978
 979         if (wps_process_oob(wps, oob_dev, 0) < 0)
 980                 return -1;
 981
 982         if ((wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_E ||
 983              wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_R) &&
 984             wpas_wps_start_pin(wpa_s, NULL,
 985                                wpabuf_head(wps->oob_conf.dev_password), 0,
 986                                DEV_PW_DEFAULT) < 0)
 987                         return -1;
 988
 989         return 0;
 990 }
 991 #endif /* CONFIG_WPS_OOB */
 992
 993
 994 int wpas_wps_start_reg(struct wpa_supplicant *wpa_s, const u8 *bssid,
 995                        const char *pin, struct wps_new_ap_settings *settings)
 996 {
 997         struct wpa_ssid *ssid;
 998         char val[200];
 999         char *pos, *end;
1000         int res;
1001
1002         if (!pin)
1003                 return -1;
1004         wpas_clear_wps(wpa_s);
1005         ssid = wpas_wps_add_network(wpa_s, 1, bssid);
1006         if (ssid == NULL)
1007                 return -1;
1008         ssid->temporary = 1;
1009         pos = val;
1010         end = pos + sizeof(val);
1011         res = os_snprintf(pos, end - pos, "\"pin=%s", pin);
1012         if (res < 0 || res >= end - pos)
1013                 return -1;
1014         pos += res;
1015         if (settings) {
1016                 res = os_snprintf(pos, end - pos, " new_ssid=%s new_auth=%s "
1017                                   "new_encr=%s new_key=%s",
1018                                   settings->ssid_hex, settings->auth,
1019                                   settings->encr, settings->key_hex);
1020                 if (res < 0 || res >= end - pos)
1021                         return -1;
1022                 pos += res;
1023         }
1024         res = os_snprintf(pos, end - pos, "\"");
1025         if (res < 0 || res >= end - pos)
1026                 return -1;
1027         wpa_config_set(ssid, "phase1", val, 0);
1028         if (wpa_s->wps_fragment_size)
1029                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
1030         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
1031                                wpa_s, NULL);
1032         wpas_wps_reassoc(wpa_s, ssid, bssid);
1033         return 0;
1034 }
1035
1036
1037 static int wpas_wps_new_psk_cb(void *ctx, const u8 *mac_addr, const u8 *psk,
1038                                size_t psk_len)
1039 {
1040         wpa_printf(MSG_DEBUG, "WPS: Received new WPA/WPA2-PSK from WPS for "
1041                    "STA " MACSTR, MAC2STR(mac_addr));
1042         wpa_hexdump_key(MSG_DEBUG, "Per-device PSK", psk, psk_len);
1043
1044         /* TODO */
1045
1046         return 0;
1047 }
1048
1049
1050 static void wpas_wps_pin_needed_cb(void *ctx, const u8 *uuid_e,
1051                                    const struct wps_device_data *dev)
1052 {
1053         char uuid[40], txt[400];
1054         int len;
1055         char devtype[WPS_DEV_TYPE_BUFSIZE];
1056         if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
1057                 return;
1058         wpa_printf(MSG_DEBUG, "WPS: PIN needed for UUID-E %s", uuid);
1059         len = os_snprintf(txt, sizeof(txt), "WPS-EVENT-PIN-NEEDED %s " MACSTR
1060                           " [%s|%s|%s|%s|%s|%s]",
1061                           uuid, MAC2STR(dev->mac_addr), dev->device_name,
1062                           dev->manufacturer, dev->model_name,
1063                           dev->model_number, dev->serial_number,
1064                           wps_dev_type_bin2str(dev->pri_dev_type, devtype,
1065                                                sizeof(devtype)));
1066         if (len > 0 && len < (int) sizeof(txt))
1067                 wpa_printf(MSG_INFO, "%s", txt);
1068 }
1069
1070
1071 static void wpas_wps_set_sel_reg_cb(void *ctx, int sel_reg, u16 dev_passwd_id,
1072                                     u16 sel_reg_config_methods)
1073 {
1074 #ifdef CONFIG_WPS_ER
1075         struct wpa_supplicant *wpa_s = ctx;
1076
1077         if (wpa_s->wps_er == NULL)
1078                 return;
1079         wpa_printf(MSG_DEBUG, "WPS ER: SetSelectedRegistrar - sel_reg=%d "
1080                    "dev_password_id=%u sel_reg_config_methods=0x%x",
1081                    sel_reg, dev_passwd_id, sel_reg_config_methods);
1082         wps_er_set_sel_reg(wpa_s->wps_er, sel_reg, dev_passwd_id,
1083                            sel_reg_config_methods);
1084 #endif /* CONFIG_WPS_ER */
1085 }
1086
1087
1088 static u16 wps_fix_config_methods(u16 config_methods)
1089 {
1090 #ifdef CONFIG_WPS2
1091         if ((config_methods &
1092              (WPS_CONFIG_DISPLAY | WPS_CONFIG_VIRT_DISPLAY |
1093               WPS_CONFIG_PHY_DISPLAY)) == WPS_CONFIG_DISPLAY) {
1094                 wpa_printf(MSG_INFO, "WPS: Converting display to "
1095                            "virtual_display for WPS 2.0 compliance");
1096                 config_methods |= WPS_CONFIG_VIRT_DISPLAY;
1097         }
1098         if ((config_methods &
1099              (WPS_CONFIG_PUSHBUTTON | WPS_CONFIG_VIRT_PUSHBUTTON |
1100               WPS_CONFIG_PHY_PUSHBUTTON)) == WPS_CONFIG_PUSHBUTTON) {
1101                 wpa_printf(MSG_INFO, "WPS: Converting push_button to "
1102                            "virtual_push_button for WPS 2.0 compliance");
1103                 config_methods |= WPS_CONFIG_VIRT_PUSHBUTTON;
1104         }
1105 #endif /* CONFIG_WPS2 */
1106
1107         return config_methods;
1108 }
1109
1110
1111 static void wpas_wps_set_uuid(struct wpa_supplicant *wpa_s,
1112                               struct wps_context *wps)
1113 {
1114         wpa_printf(MSG_DEBUG, "WPS: Set UUID for interface %s", wpa_s->ifname);
1115         if (is_nil_uuid(wpa_s->conf->uuid)) {
1116                 struct wpa_supplicant *first;
1117                 first = wpa_s->global->ifaces;
1118                 while (first && first->next)
1119                         first = first->next;
1120                 if (first && first != wpa_s) {
1121                         if (wps != wpa_s->global->ifaces->wps)
1122                                 os_memcpy(wps->uuid,
1123                                           wpa_s->global->ifaces->wps->uuid,
1124                                           WPS_UUID_LEN);
1125                         wpa_hexdump(MSG_DEBUG, "WPS: UUID from the first "
1126                                     "interface", wps->uuid, WPS_UUID_LEN);
1127                 } else {
1128                         uuid_gen_mac_addr(wpa_s->own_addr, wps->uuid);
1129                         wpa_hexdump(MSG_DEBUG, "WPS: UUID based on MAC "
1130                                     "address", wps->uuid, WPS_UUID_LEN);
1131                 }
1132         } else {
1133                 os_memcpy(wps->uuid, wpa_s->conf->uuid, WPS_UUID_LEN);
1134                 wpa_hexdump(MSG_DEBUG, "WPS: UUID based on configuration",
1135                             wps->uuid, WPS_UUID_LEN);
1136         }
1137 }
1138
1139
1140 static void wpas_wps_set_vendor_ext_m1(struct wpa_supplicant *wpa_s,
1141                                        struct wps_context *wps)
1142 {
1143         wpabuf_free(wps->dev.vendor_ext_m1);
1144         wps->dev.vendor_ext_m1 = NULL;
1145
1146         if (wpa_s->conf->wps_vendor_ext_m1) {
1147                 wps->dev.vendor_ext_m1 =
1148                         wpabuf_dup(wpa_s->conf->wps_vendor_ext_m1);
1149                 if (!wps->dev.vendor_ext_m1) {
1150                         wpa_printf(MSG_ERROR, "WPS: Cannot "
1151                                    "allocate memory for vendor_ext_m1");
1152                 }
1153         }
1154 }
1155
1156
1157 int wpas_wps_init(struct wpa_supplicant *wpa_s)
1158 {
1159         struct wps_context *wps;
1160         struct wps_registrar_config rcfg;
1161         struct hostapd_hw_modes *modes;
1162         u16 m;
1163
1164         wps = os_zalloc(sizeof(*wps));
1165         if (wps == NULL)
1166                 return -1;
1167
1168         wps->cred_cb = wpa_supplicant_wps_cred;
1169         wps->event_cb = wpa_supplicant_wps_event;
1170         wps->cb_ctx = wpa_s;
1171
1172         wps->dev.device_name = wpa_s->conf->device_name;
1173         wps->dev.manufacturer = wpa_s->conf->manufacturer;
1174         wps->dev.model_name = wpa_s->conf->model_name;
1175         wps->dev.model_number = wpa_s->conf->model_number;
1176         wps->dev.serial_number = wpa_s->conf->serial_number;
1177         wps->config_methods =
1178                 wps_config_methods_str2bin(wpa_s->conf->config_methods);
1179         if ((wps->config_methods & (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) ==
1180             (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
1181                 wpa_printf(MSG_ERROR, "WPS: Both Label and Display config "
1182                            "methods are not allowed at the same time");
1183                 os_free(wps);
1184                 return -1;
1185         }
1186         wps->config_methods = wps_fix_config_methods(wps->config_methods);
1187         wps->dev.config_methods = wps->config_methods;
1188         os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type,
1189                   WPS_DEV_TYPE_LEN);
1190
1191         wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
1192         os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type,
1193                   WPS_DEV_TYPE_LEN * wps->dev.num_sec_dev_types);
1194
1195         wpas_wps_set_vendor_ext_m1(wpa_s, wps);
1196
1197         wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
1198         modes = wpa_s->hw.modes;
1199         if (modes) {
1200                 for (m = 0; m < wpa_s->hw.num_modes; m++) {
1201                         if (modes[m].mode == HOSTAPD_MODE_IEEE80211B ||
1202                             modes[m].mode == HOSTAPD_MODE_IEEE80211G)
1203                                 wps->dev.rf_bands |= WPS_RF_24GHZ;
1204                         else if (modes[m].mode == HOSTAPD_MODE_IEEE80211A)
1205                                 wps->dev.rf_bands |= WPS_RF_50GHZ;
1206                 }
1207         }
1208         if (wps->dev.rf_bands == 0) {
1209                 /*
1210                  * Default to claiming support for both bands if the driver
1211                  * does not provide support for fetching supported bands.
1212                  */
1213                 wps->dev.rf_bands = WPS_RF_24GHZ | WPS_RF_50GHZ;
1214         }
1215         os_memcpy(wps->dev.mac_addr, wpa_s->own_addr, ETH_ALEN);
1216         wpas_wps_set_uuid(wpa_s, wps);
1217
1218         wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK;
1219         wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP;
1220
1221         os_memset(&rcfg, 0, sizeof(rcfg));
1222         rcfg.new_psk_cb = wpas_wps_new_psk_cb;
1223         rcfg.pin_needed_cb = wpas_wps_pin_needed_cb;
1224         rcfg.set_sel_reg_cb = wpas_wps_set_sel_reg_cb;
1225         rcfg.cb_ctx = wpa_s;
1226
1227         wps->registrar = wps_registrar_init(wps, &rcfg);
1228         if (wps->registrar == NULL) {
1229                 wpa_printf(MSG_DEBUG, "Failed to initialize WPS Registrar");
1230                 os_free(wps);
1231                 return -1;
1232         }
1233
1234         wpa_s->wps = wps;
1235
1236         return 0;
1237 }
1238
1239
1240 void wpas_wps_deinit(struct wpa_supplicant *wpa_s)
1241 {
1242         eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
1243
1244         if (wpa_s->wps == NULL)
1245                 return;
1246
1247 #ifdef CONFIG_WPS_ER
1248         wps_er_deinit(wpa_s->wps_er, NULL, NULL);
1249         wpa_s->wps_er = NULL;
1250 #endif /* CONFIG_WPS_ER */
1251
1252         wps_registrar_deinit(wpa_s->wps->registrar);
1253         wpabuf_free(wpa_s->wps->dh_pubkey);
1254         wpabuf_free(wpa_s->wps->dh_privkey);
1255         wpabuf_free(wpa_s->wps->oob_conf.pubkey_hash);
1256         wpabuf_free(wpa_s->wps->oob_conf.dev_password);
1257         wpabuf_free(wpa_s->wps->dev.vendor_ext_m1);
1258         os_free(wpa_s->wps->network_key);
1259         os_free(wpa_s->wps);
1260         wpa_s->wps = NULL;
1261 }
1262
1263
1264 int wpas_wps_ssid_bss_match(struct wpa_supplicant *wpa_s,
1265                             struct wpa_ssid *ssid, struct wpa_scan_res *bss)
1266 {
1267         struct wpabuf *wps_ie;
1268
1269         if (!(ssid->key_mgmt & WPA_KEY_MGMT_WPS))
1270                 return -1;
1271
1272         wps_ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1273         if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
1274                 if (!wps_ie) {
1275                         wpa_printf(MSG_DEBUG, "   skip - non-WPS AP");
1276                         return 0;
1277                 }
1278
1279                 if (!wps_is_selected_pbc_registrar(wps_ie)) {
1280                         wpa_printf(MSG_DEBUG, "   skip - WPS AP "
1281                                    "without active PBC Registrar");
1282                         wpabuf_free(wps_ie);
1283                         return 0;
1284                 }
1285
1286                 /* TODO: overlap detection */
1287                 wpa_printf(MSG_DEBUG, "   selected based on WPS IE "
1288                            "(Active PBC)");
1289                 wpabuf_free(wps_ie);
1290                 return 1;
1291         }
1292
1293         if (eap_is_wps_pin_enrollee(&ssid->eap)) {
1294                 if (!wps_ie) {
1295                         wpa_printf(MSG_DEBUG, "   skip - non-WPS AP");
1296                         return 0;
1297                 }
1298
1299                 /*
1300                  * Start with WPS APs that advertise our address as an
1301                  * authorized MAC (v2.0) or active PIN Registrar (v1.0) and
1302                  * allow any WPS AP after couple of scans since some APs do not
1303                  * set Selected Registrar attribute properly when using
1304                  * external Registrar.
1305                  */
1306                 if (!wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1)) {
1307                         if (wpa_s->scan_runs < WPS_PIN_SCAN_IGNORE_SEL_REG) {
1308                                 wpa_printf(MSG_DEBUG, "   skip - WPS AP "
1309                                            "without active PIN Registrar");
1310                                 wpabuf_free(wps_ie);
1311                                 return 0;
1312                         }
1313                         wpa_printf(MSG_DEBUG, "   selected based on WPS IE");
1314                 } else {
1315                         wpa_printf(MSG_DEBUG, "   selected based on WPS IE "
1316                                    "(Authorized MAC or Active PIN)");
1317                 }
1318                 wpabuf_free(wps_ie);
1319                 return 1;
1320         }
1321
1322         if (wps_ie) {
1323                 wpa_printf(MSG_DEBUG, "   selected based on WPS IE");
1324                 wpabuf_free(wps_ie);
1325                 return 1;
1326         }
1327
1328         return -1;
1329 }
1330
1331
1332 int wpas_wps_ssid_wildcard_ok(struct wpa_supplicant *wpa_s,
1333                               struct wpa_ssid *ssid,
1334                               struct wpa_scan_res *bss)
1335 {
1336         struct wpabuf *wps_ie = NULL;
1337         int ret = 0;
1338
1339         if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
1340                 wps_ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1341                 if (wps_ie && wps_is_selected_pbc_registrar(wps_ie)) {
1342                         /* allow wildcard SSID for WPS PBC */
1343                         ret = 1;
1344                 }
1345         } else if (eap_is_wps_pin_enrollee(&ssid->eap)) {
1346                 wps_ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1347                 if (wps_ie &&
1348                     (wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1) ||
1349                      wpa_s->scan_runs >= WPS_PIN_SCAN_IGNORE_SEL_REG)) {
1350                         /* allow wildcard SSID for WPS PIN */
1351                         ret = 1;
1352                 }
1353         }
1354
1355         if (!ret && ssid->bssid_set &&
1356             os_memcmp(ssid->bssid, bss->bssid, ETH_ALEN) == 0) {
1357                 /* allow wildcard SSID due to hardcoded BSSID match */
1358                 ret = 1;
1359         }
1360
1361 #ifdef CONFIG_WPS_STRICT
1362         if (wps_ie) {
1363                 if (wps_validate_beacon_probe_resp(wps_ie, bss->beacon_ie_len >
1364                                                    0, bss->bssid) < 0)
1365                         ret = 0;
1366                 if (bss->beacon_ie_len) {
1367                         struct wpabuf *bcn_wps;
1368                         bcn_wps = wpa_scan_get_vendor_ie_multi_beacon(
1369                                 bss, WPS_IE_VENDOR_TYPE);
1370                         if (bcn_wps == NULL) {
1371                                 wpa_printf(MSG_DEBUG, "WPS: Mandatory WPS IE "
1372                                            "missing from AP Beacon");
1373                                 ret = 0;
1374                         } else {
1375                                 if (wps_validate_beacon(wps_ie) < 0)
1376                                         ret = 0;
1377                                 wpabuf_free(bcn_wps);
1378                         }
1379                 }
1380         }
1381 #endif /* CONFIG_WPS_STRICT */
1382
1383         wpabuf_free(wps_ie);
1384
1385         return ret;
1386 }
1387
1388
1389 int wpas_wps_scan_pbc_overlap(struct wpa_supplicant *wpa_s,
1390                               struct wpa_bss *selected, struct wpa_ssid *ssid)
1391 {
1392         const u8 *sel_uuid, *uuid;
1393         struct wpabuf *wps_ie;
1394         int ret = 0;
1395         struct wpa_bss *bss;
1396
1397         if (!eap_is_wps_pbc_enrollee(&ssid->eap))
1398                 return 0;
1399
1400         wpa_printf(MSG_DEBUG, "WPS: Check whether PBC session overlap is "
1401                    "present in scan results; selected BSSID " MACSTR,
1402                    MAC2STR(selected->bssid));
1403
1404         /* Make sure that only one AP is in active PBC mode */
1405         wps_ie = wpa_bss_get_vendor_ie_multi(selected, WPS_IE_VENDOR_TYPE);
1406         if (wps_ie) {
1407                 sel_uuid = wps_get_uuid_e(wps_ie);
1408                 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the selected BSS",
1409                             sel_uuid, UUID_LEN);
1410         } else {
1411                 wpa_printf(MSG_DEBUG, "WPS: Selected BSS does not include "
1412                            "WPS IE?!");
1413                 sel_uuid = NULL;
1414         }
1415
1416         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1417                 struct wpabuf *ie;
1418                 if (bss == selected)
1419                         continue;
1420                 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1421                 if (!ie)
1422                         continue;
1423                 if (!wps_is_selected_pbc_registrar(ie)) {
1424                         wpabuf_free(ie);
1425                         continue;
1426                 }
1427                 wpa_printf(MSG_DEBUG, "WPS: Another BSS in active PBC mode: "
1428                            MACSTR, MAC2STR(bss->bssid));
1429                 uuid = wps_get_uuid_e(ie);
1430                 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the other BSS",
1431                             uuid, UUID_LEN);
1432                 if (sel_uuid == NULL || uuid == NULL ||
1433                     os_memcmp(sel_uuid, uuid, UUID_LEN) != 0) {
1434                         ret = 1; /* PBC overlap */
1435                         wpa_msg(wpa_s, MSG_INFO, "WPS: PBC overlap detected: "
1436                                 MACSTR " and " MACSTR,
1437                                 MAC2STR(selected->bssid),
1438                                 MAC2STR(bss->bssid));
1439                         wpabuf_free(ie);
1440                         break;
1441                 }
1442
1443                 /* TODO: verify that this is reasonable dual-band situation */
1444
1445                 wpabuf_free(ie);
1446         }
1447
1448         wpabuf_free(wps_ie);
1449
1450         return ret;
1451 }
1452
1453
1454 void wpas_wps_notify_scan_results(struct wpa_supplicant *wpa_s)
1455 {
1456         struct wpa_bss *bss;
1457         unsigned int pbc = 0, auth = 0, pin = 0, wps = 0;
1458
1459         if (wpa_s->disconnected || wpa_s->wpa_state >= WPA_ASSOCIATED)
1460                 return;
1461
1462         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1463                 struct wpabuf *ie;
1464                 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1465                 if (!ie)
1466                         continue;
1467                 if (wps_is_selected_pbc_registrar(ie))
1468                         pbc++;
1469                 else if (wps_is_addr_authorized(ie, wpa_s->own_addr, 0))
1470                         auth++;
1471                 else if (wps_is_selected_pin_registrar(ie))
1472                         pin++;
1473                 else
1474                         wps++;
1475                 wpabuf_free(ie);
1476         }
1477
1478         if (pbc)
1479                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PBC);
1480         else if (auth)
1481                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_AUTH);
1482         else if (pin)
1483                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PIN);
1484         else if (wps)
1485                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE);
1486 }
1487
1488
1489 int wpas_wps_searching(struct wpa_supplicant *wpa_s)
1490 {
1491         struct wpa_ssid *ssid;
1492
1493         for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1494                 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && !ssid->disabled)
1495                         return 1;
1496         }
1497
1498         return 0;
1499 }
1500
1501
1502 int wpas_wps_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
1503                               char *end)
1504 {
1505         struct wpabuf *wps_ie;
1506         int ret;
1507
1508         wps_ie = ieee802_11_vendor_ie_concat(ies, ies_len, WPS_DEV_OUI_WFA);
1509         if (wps_ie == NULL)
1510                 return 0;
1511
1512         ret = wps_attr_text(wps_ie, buf, end);
1513         wpabuf_free(wps_ie);
1514         return ret;
1515 }
1516
1517
1518 int wpas_wps_er_start(struct wpa_supplicant *wpa_s, const char *filter)
1519 {
1520 #ifdef CONFIG_WPS_ER
1521         if (wpa_s->wps_er) {
1522                 wps_er_refresh(wpa_s->wps_er);
1523                 return 0;
1524         }
1525         wpa_s->wps_er = wps_er_init(wpa_s->wps, wpa_s->ifname, filter);
1526         if (wpa_s->wps_er == NULL)
1527                 return -1;
1528         return 0;
1529 #else /* CONFIG_WPS_ER */
1530         return 0;
1531 #endif /* CONFIG_WPS_ER */
1532 }
1533
1534
1535 int wpas_wps_er_stop(struct wpa_supplicant *wpa_s)
1536 {
1537 #ifdef CONFIG_WPS_ER
1538         wps_er_deinit(wpa_s->wps_er, NULL, NULL);
1539         wpa_s->wps_er = NULL;
1540 #endif /* CONFIG_WPS_ER */
1541         return 0;
1542 }
1543
1544
1545 #ifdef CONFIG_WPS_ER
1546 int wpas_wps_er_add_pin(struct wpa_supplicant *wpa_s, const u8 *addr,
1547                         const char *uuid, const char *pin)
1548 {
1549         u8 u[UUID_LEN];
1550         int any = 0;
1551
1552         if (os_strcmp(uuid, "any") == 0)
1553                 any = 1;
1554         else if (uuid_str2bin(uuid, u))
1555                 return -1;
1556         return wps_registrar_add_pin(wpa_s->wps->registrar, addr,
1557                                      any ? NULL : u,
1558                                      (const u8 *) pin, os_strlen(pin), 300);
1559 }
1560
1561
1562 int wpas_wps_er_pbc(struct wpa_supplicant *wpa_s, const char *uuid)
1563 {
1564         u8 u[UUID_LEN];
1565
1566         if (uuid_str2bin(uuid, u))
1567                 return -1;
1568         return wps_er_pbc(wpa_s->wps_er, u);
1569 }
1570
1571
1572 int wpas_wps_er_learn(struct wpa_supplicant *wpa_s, const char *uuid,
1573                       const char *pin)
1574 {
1575         u8 u[UUID_LEN];
1576
1577         if (uuid_str2bin(uuid, u))
1578                 return -1;
1579         return wps_er_learn(wpa_s->wps_er, u, (const u8 *) pin,
1580                             os_strlen(pin));
1581 }
1582
1583
1584 int wpas_wps_er_set_config(struct wpa_supplicant *wpa_s, const char *uuid,
1585                            int id)
1586 {
1587         u8 u[UUID_LEN];
1588         struct wpa_ssid *ssid;
1589         struct wps_credential cred;
1590
1591         if (uuid_str2bin(uuid, u))
1592                 return -1;
1593         ssid = wpa_config_get_network(wpa_s->conf, id);
1594         if (ssid == NULL || ssid->ssid == NULL)
1595                 return -1;
1596
1597         os_memset(&cred, 0, sizeof(cred));
1598         if (ssid->ssid_len > 32)
1599                 return -1;
1600         os_memcpy(cred.ssid, ssid->ssid, ssid->ssid_len);
1601         cred.ssid_len = ssid->ssid_len;
1602         if (ssid->key_mgmt & WPA_KEY_MGMT_PSK) {
1603                 cred.auth_type = (ssid->proto & WPA_PROTO_RSN) ?
1604                         WPS_AUTH_WPA2PSK : WPS_AUTH_WPAPSK;
1605                 if (ssid->pairwise_cipher & WPA_CIPHER_CCMP)
1606                         cred.encr_type = WPS_ENCR_AES;
1607                 else
1608                         cred.encr_type = WPS_ENCR_TKIP;
1609                 if (ssid->passphrase) {
1610                         cred.key_len = os_strlen(ssid->passphrase);
1611                         if (cred.key_len >= 64)
1612                                 return -1;
1613                         os_memcpy(cred.key, ssid->passphrase, cred.key_len);
1614                 } else if (ssid->psk_set) {
1615                         cred.key_len = 32;
1616                         os_memcpy(cred.key, ssid->psk, 32);
1617                 } else
1618                         return -1;
1619         } else {
1620                 cred.auth_type = WPS_AUTH_OPEN;
1621                 cred.encr_type = WPS_ENCR_NONE;
1622         }
1623         return wps_er_set_config(wpa_s->wps_er, u, &cred);
1624 }
1625
1626
1627 int wpas_wps_er_config(struct wpa_supplicant *wpa_s, const char *uuid,
1628                        const char *pin, struct wps_new_ap_settings *settings)
1629 {
1630         u8 u[UUID_LEN];
1631         struct wps_credential cred;
1632         size_t len;
1633
1634         if (uuid_str2bin(uuid, u))
1635                 return -1;
1636         if (settings->ssid_hex == NULL || settings->auth == NULL ||
1637             settings->encr == NULL || settings->key_hex == NULL)
1638                 return -1;
1639
1640         os_memset(&cred, 0, sizeof(cred));
1641         len = os_strlen(settings->ssid_hex);
1642         if ((len & 1) || len > 2 * sizeof(cred.ssid) ||
1643             hexstr2bin(settings->ssid_hex, cred.ssid, len / 2))
1644                 return -1;
1645         cred.ssid_len = len / 2;
1646
1647         len = os_strlen(settings->key_hex);
1648         if ((len & 1) || len > 2 * sizeof(cred.key) ||
1649             hexstr2bin(settings->key_hex, cred.key, len / 2))
1650                 return -1;
1651         cred.key_len = len / 2;
1652
1653         if (os_strcmp(settings->auth, "OPEN") == 0)
1654                 cred.auth_type = WPS_AUTH_OPEN;
1655         else if (os_strcmp(settings->auth, "WPAPSK") == 0)
1656                 cred.auth_type = WPS_AUTH_WPAPSK;
1657         else if (os_strcmp(settings->auth, "WPA2PSK") == 0)
1658                 cred.auth_type = WPS_AUTH_WPA2PSK;
1659         else
1660                 return -1;
1661
1662         if (os_strcmp(settings->encr, "NONE") == 0)
1663                 cred.encr_type = WPS_ENCR_NONE;
1664         else if (os_strcmp(settings->encr, "WEP") == 0)
1665                 cred.encr_type = WPS_ENCR_WEP;
1666         else if (os_strcmp(settings->encr, "TKIP") == 0)
1667                 cred.encr_type = WPS_ENCR_TKIP;
1668         else if (os_strcmp(settings->encr, "CCMP") == 0)
1669                 cred.encr_type = WPS_ENCR_AES;
1670         else
1671                 return -1;
1672
1673         return wps_er_config(wpa_s->wps_er, u, (const u8 *) pin,
1674                              os_strlen(pin), &cred);
1675 }
1676
1677
1678 #ifdef CONFIG_WPS_NFC
1679 struct wpabuf * wpas_wps_er_nfc_config_token(struct wpa_supplicant *wpa_s,
1680                                              int ndef, const char *uuid)
1681 {
1682         struct wpabuf *ret;
1683         u8 u[UUID_LEN];
1684
1685         if (!wpa_s->wps_er)
1686                 return NULL;
1687
1688         if (uuid_str2bin(uuid, u))
1689                 return NULL;
1690
1691         ret = wps_er_nfc_config_token(wpa_s->wps_er, u);
1692         if (ndef && ret) {
1693                 struct wpabuf *tmp;
1694                 tmp = ndef_build_wifi(ret);
1695                 wpabuf_free(ret);
1696                 if (tmp == NULL)
1697                         return NULL;
1698                 ret = tmp;
1699         }
1700
1701         return ret;
1702 }
1703 #endif /* CONFIG_WPS_NFC */
1704
1705
1706 static int callbacks_pending = 0;
1707
1708 static void wpas_wps_terminate_cb(void *ctx)
1709 {
1710         wpa_printf(MSG_DEBUG, "WPS ER: Terminated");
1711         if (--callbacks_pending <= 0)
1712                 eloop_terminate();
1713 }
1714 #endif /* CONFIG_WPS_ER */
1715
1716
1717 int wpas_wps_terminate_pending(struct wpa_supplicant *wpa_s)
1718 {
1719 #ifdef CONFIG_WPS_ER
1720         if (wpa_s->wps_er) {
1721                 callbacks_pending++;
1722                 wps_er_deinit(wpa_s->wps_er, wpas_wps_terminate_cb, wpa_s);
1723                 wpa_s->wps_er = NULL;
1724                 return 1;
1725         }
1726 #endif /* CONFIG_WPS_ER */
1727         return 0;
1728 }
1729
1730
1731 int wpas_wps_in_progress(struct wpa_supplicant *wpa_s)
1732 {
1733         struct wpa_ssid *ssid;
1734
1735         for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1736                 if (!ssid->disabled && ssid->key_mgmt == WPA_KEY_MGMT_WPS)
1737                         return 1;
1738         }
1739
1740         return 0;
1741 }
1742
1743
1744 void wpas_wps_update_config(struct wpa_supplicant *wpa_s)
1745 {
1746         struct wps_context *wps = wpa_s->wps;
1747
1748         if (wps == NULL)
1749                 return;
1750
1751         if (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS) {
1752                 wps->config_methods = wps_config_methods_str2bin(
1753                         wpa_s->conf->config_methods);
1754                 if ((wps->config_methods &
1755                      (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) ==
1756                     (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
1757                         wpa_printf(MSG_ERROR, "WPS: Both Label and Display "
1758                                    "config methods are not allowed at the "
1759                                    "same time");
1760                         wps->config_methods &= ~WPS_CONFIG_LABEL;
1761                 }
1762         }
1763         wps->config_methods = wps_fix_config_methods(wps->config_methods);
1764         wps->dev.config_methods = wps->config_methods;
1765
1766         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
1767                 os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type,
1768                           WPS_DEV_TYPE_LEN);
1769
1770         if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE) {
1771                 wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
1772                 os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type,
1773                           wps->dev.num_sec_dev_types * WPS_DEV_TYPE_LEN);
1774         }
1775
1776         if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION)
1777                 wpas_wps_set_vendor_ext_m1(wpa_s, wps);
1778
1779         if (wpa_s->conf->changed_parameters & CFG_CHANGED_OS_VERSION)
1780                 wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
1781
1782         if (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID)
1783                 wpas_wps_set_uuid(wpa_s, wps);
1784
1785         if (wpa_s->conf->changed_parameters &
1786             (CFG_CHANGED_DEVICE_NAME | CFG_CHANGED_WPS_STRING)) {
1787                 /* Update pointers to make sure they refer current values */
1788                 wps->dev.device_name = wpa_s->conf->device_name;
1789                 wps->dev.manufacturer = wpa_s->conf->manufacturer;
1790                 wps->dev.model_name = wpa_s->conf->model_name;
1791                 wps->dev.model_number = wpa_s->conf->model_number;
1792                 wps->dev.serial_number = wpa_s->conf->serial_number;
1793         }
1794 }
1795
1796
1797 #ifdef CONFIG_WPS_NFC
1798
1799 struct wpabuf * wpas_wps_nfc_token(struct wpa_supplicant *wpa_s, int ndef)
1800 {
1801         return wps_nfc_token_gen(ndef, &wpa_s->conf->wps_nfc_dev_pw_id,
1802                                  &wpa_s->conf->wps_nfc_dh_pubkey,
1803                                  &wpa_s->conf->wps_nfc_dh_privkey,
1804                                  &wpa_s->conf->wps_nfc_dev_pw);
1805 }
1806
1807
1808 int wpas_wps_start_nfc(struct wpa_supplicant *wpa_s, const u8 *bssid)
1809 {
1810         struct wps_context *wps = wpa_s->wps;
1811         char pw[32 * 2 + 1];
1812
1813         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL ||
1814             wpa_s->conf->wps_nfc_dh_privkey == NULL ||
1815             wpa_s->conf->wps_nfc_dev_pw == NULL)
1816                 return -1;
1817
1818         dh5_free(wps->dh_ctx);
1819         wpabuf_free(wps->dh_pubkey);
1820         wpabuf_free(wps->dh_privkey);
1821         wps->dh_privkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
1822         wps->dh_pubkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
1823         if (wps->dh_privkey == NULL || wps->dh_pubkey == NULL) {
1824                 wps->dh_ctx = NULL;
1825                 wpabuf_free(wps->dh_pubkey);
1826                 wps->dh_pubkey = NULL;
1827                 wpabuf_free(wps->dh_privkey);
1828                 wps->dh_privkey = NULL;
1829                 return -1;
1830         }
1831         wps->dh_ctx = dh5_init_fixed(wps->dh_privkey, wps->dh_pubkey);
1832         if (wps->dh_ctx == NULL)
1833                 return -1;
1834
1835         wpa_snprintf_hex_uppercase(pw, sizeof(pw),
1836                                    wpabuf_head(wpa_s->conf->wps_nfc_dev_pw),
1837                                    wpabuf_len(wpa_s->conf->wps_nfc_dev_pw));
1838         return wpas_wps_start_pin(wpa_s, bssid, pw, 0,
1839                                   wpa_s->conf->wps_nfc_dev_pw_id);
1840 }
1841
1842
1843 static int wpas_wps_use_cred(struct wpa_supplicant *wpa_s,
1844                              struct wps_parse_attr *attr)
1845 {
1846         if (wps_oob_use_cred(wpa_s->wps, attr) < 0)
1847                 return -1;
1848
1849         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
1850                 return 0;
1851
1852         wpa_printf(MSG_DEBUG, "WPS: Request reconnection with new network "
1853                    "based on the received credential added");
1854         wpa_s->normal_scans = 0;
1855         wpa_supplicant_reinit_autoscan(wpa_s);
1856         wpa_s->disconnected = 0;
1857         wpa_s->reassociate = 1;
1858         wpa_supplicant_req_scan(wpa_s, 0, 0);
1859
1860         return 0;
1861 }
1862
1863
1864 static int wpas_wps_add_nfc_password_token(struct wpa_supplicant *wpa_s,
1865                                            struct wps_parse_attr *attr)
1866 {
1867         return wps_registrar_add_nfc_password_token(
1868                 wpa_s->wps->registrar, attr->oob_dev_password,
1869                 attr->oob_dev_password_len);
1870 }
1871
1872
1873 static int wpas_wps_nfc_tag_process(struct wpa_supplicant *wpa_s,
1874                                     const struct wpabuf *wps)
1875 {
1876         struct wps_parse_attr attr;
1877
1878         wpa_hexdump_buf(MSG_DEBUG, "WPS: Received NFC tag payload", wps);
1879
1880         if (wps_parse_msg(wps, &attr)) {
1881                 wpa_printf(MSG_DEBUG, "WPS: Ignore invalid data from NFC tag");
1882                 return -1;
1883         }
1884
1885         if (attr.num_cred)
1886                 return wpas_wps_use_cred(wpa_s, &attr);
1887
1888 #ifdef CONFIG_WPS_ER
1889         if (attr.oob_dev_password)
1890                 return wpas_wps_add_nfc_password_token(wpa_s, &attr);
1891 #endif /* CONFIG_WPS_ER */
1892
1893         wpa_printf(MSG_DEBUG, "WPS: Ignore unrecognized NFC tag");
1894         return -1;
1895 }
1896
1897
1898 int wpas_wps_nfc_tag_read(struct wpa_supplicant *wpa_s,
1899                           const struct wpabuf *data)
1900 {
1901         const struct wpabuf *wps = data;
1902         struct wpabuf *tmp = NULL;
1903         int ret;
1904
1905         if (wpabuf_len(data) < 4)
1906                 return -1;
1907
1908         if (*wpabuf_head_u8(data) != 0x10) {
1909                 /* Assume this contains full NDEF record */
1910                 tmp = ndef_parse_wifi(data);
1911                 if (tmp == NULL) {
1912                         wpa_printf(MSG_DEBUG, "WPS: Could not parse NDEF");
1913                         return -1;
1914                 }
1915                 wps = tmp;
1916         }
1917
1918         ret = wpas_wps_nfc_tag_process(wpa_s, wps);
1919         wpabuf_free(tmp);
1920         return ret;
1921 }
1922
1923 #endif /* CONFIG_WPS_NFC */