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         if (wpa_config_set(ssid, "phase1", "\"pbc=1\"", 0) < 0)
 942                 return -1;
 943         if (wpa_s->wps_fragment_size)
 944                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
 945         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
 946                                wpa_s, NULL);
 947         wpas_wps_reassoc(wpa_s, ssid, bssid);
 948         return 0;
 949 }
 950
 951
 952 int wpas_wps_start_pin(struct wpa_supplicant *wpa_s, const u8 *bssid,
 953                        const char *pin, int p2p_group, u16 dev_pw_id)
 954 {
 955         struct wpa_ssid *ssid;
 956         char val[128];
 957         unsigned int rpin = 0;
 958
 959         wpas_clear_wps(wpa_s);
 960         ssid = wpas_wps_add_network(wpa_s, 0, bssid);
 961         if (ssid == NULL)
 962                 return -1;
 963         ssid->temporary = 1;
 964         ssid->p2p_group = p2p_group;
 965 #ifdef CONFIG_P2P
 966         if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) {
 967                 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1);
 968                 if (ssid->ssid) {
 969                         ssid->ssid_len = wpa_s->go_params->ssid_len;
 970                         os_memcpy(ssid->ssid, wpa_s->go_params->ssid,
 971                                   ssid->ssid_len);
 972                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP "
 973                                           "SSID", ssid->ssid, ssid->ssid_len);
 974                 }
 975         }
 976 #endif /* CONFIG_P2P */
 977         if (pin)
 978                 os_snprintf(val, sizeof(val), "\"pin=%s dev_pw_id=%u\"",
 979                             pin, dev_pw_id);
 980         else {
 981                 rpin = wps_generate_pin();
 982                 os_snprintf(val, sizeof(val), "\"pin=%08d dev_pw_id=%u\"",
 983                             rpin, dev_pw_id);
 984         }
 985         if (wpa_config_set(ssid, "phase1", val, 0) < 0)
 986                 return -1;
 987         if (wpa_s->wps_fragment_size)
 988                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
 989         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
 990                                wpa_s, NULL);
 991         wpa_s->wps_ap_iter = 1;
 992         wpas_wps_reassoc(wpa_s, ssid, bssid);
 993         return rpin;
 994 }
 995
 996
 997 /* Cancel the wps pbc/pin requests */
 998 int wpas_wps_cancel(struct wpa_supplicant *wpa_s)
 999 {
1000 #ifdef CONFIG_AP
1001         if (wpa_s->ap_iface) {
1002                 wpa_printf(MSG_DEBUG, "WPS: Cancelling in AP mode");
1003                 return wpa_supplicant_ap_wps_cancel(wpa_s);
1004         }
1005 #endif /* CONFIG_AP */
1006
1007         if (wpa_s->wpa_state == WPA_SCANNING ||
1008             wpa_s->wpa_state == WPA_DISCONNECTED) {
1009                 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - cancel scan");
1010                 wpa_supplicant_cancel_scan(wpa_s);
1011                 wpas_clear_wps(wpa_s);
1012         } else if (wpa_s->wpa_state >= WPA_ASSOCIATED) {
1013                 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - "
1014                            "deauthenticate");
1015                 wpa_supplicant_deauthenticate(wpa_s,
1016                                               WLAN_REASON_DEAUTH_LEAVING);
1017                 wpas_clear_wps(wpa_s);
1018         } else {
1019                 wpas_wps_reenable_networks(wpa_s);
1020                 wpas_wps_clear_ap_info(wpa_s);
1021         }
1022
1023         return 0;
1024 }
1025
1026
1027 int wpas_wps_start_reg(struct wpa_supplicant *wpa_s, const u8 *bssid,
1028                        const char *pin, struct wps_new_ap_settings *settings)
1029 {
1030         struct wpa_ssid *ssid;
1031         char val[200];
1032         char *pos, *end;
1033         int res;
1034
1035         if (!pin)
1036                 return -1;
1037         wpas_clear_wps(wpa_s);
1038         ssid = wpas_wps_add_network(wpa_s, 1, bssid);
1039         if (ssid == NULL)
1040                 return -1;
1041         ssid->temporary = 1;
1042         pos = val;
1043         end = pos + sizeof(val);
1044         res = os_snprintf(pos, end - pos, "\"pin=%s", pin);
1045         if (res < 0 || res >= end - pos)
1046                 return -1;
1047         pos += res;
1048         if (settings) {
1049                 res = os_snprintf(pos, end - pos, " new_ssid=%s new_auth=%s "
1050                                   "new_encr=%s new_key=%s",
1051                                   settings->ssid_hex, settings->auth,
1052                                   settings->encr, settings->key_hex);
1053                 if (res < 0 || res >= end - pos)
1054                         return -1;
1055                 pos += res;
1056         }
1057         res = os_snprintf(pos, end - pos, "\"");
1058         if (res < 0 || res >= end - pos)
1059                 return -1;
1060         if (wpa_config_set(ssid, "phase1", val, 0) < 0)
1061                 return -1;
1062         if (wpa_s->wps_fragment_size)
1063                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
1064         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
1065                                wpa_s, NULL);
1066         wpas_wps_reassoc(wpa_s, ssid, bssid);
1067         return 0;
1068 }
1069
1070
1071 static int wpas_wps_new_psk_cb(void *ctx, const u8 *mac_addr, const u8 *psk,
1072                                size_t psk_len)
1073 {
1074         wpa_printf(MSG_DEBUG, "WPS: Received new WPA/WPA2-PSK from WPS for "
1075                    "STA " MACSTR, MAC2STR(mac_addr));
1076         wpa_hexdump_key(MSG_DEBUG, "Per-device PSK", psk, psk_len);
1077
1078         /* TODO */
1079
1080         return 0;
1081 }
1082
1083
1084 static void wpas_wps_pin_needed_cb(void *ctx, const u8 *uuid_e,
1085                                    const struct wps_device_data *dev)
1086 {
1087         char uuid[40], txt[400];
1088         int len;
1089         char devtype[WPS_DEV_TYPE_BUFSIZE];
1090         if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
1091                 return;
1092         wpa_printf(MSG_DEBUG, "WPS: PIN needed for UUID-E %s", uuid);
1093         len = os_snprintf(txt, sizeof(txt), "WPS-EVENT-PIN-NEEDED %s " MACSTR
1094                           " [%s|%s|%s|%s|%s|%s]",
1095                           uuid, MAC2STR(dev->mac_addr), dev->device_name,
1096                           dev->manufacturer, dev->model_name,
1097                           dev->model_number, dev->serial_number,
1098                           wps_dev_type_bin2str(dev->pri_dev_type, devtype,
1099                                                sizeof(devtype)));
1100         if (len > 0 && len < (int) sizeof(txt))
1101                 wpa_printf(MSG_INFO, "%s", txt);
1102 }
1103
1104
1105 static void wpas_wps_set_sel_reg_cb(void *ctx, int sel_reg, u16 dev_passwd_id,
1106                                     u16 sel_reg_config_methods)
1107 {
1108 #ifdef CONFIG_WPS_ER
1109         struct wpa_supplicant *wpa_s = ctx;
1110
1111         if (wpa_s->wps_er == NULL)
1112                 return;
1113         wpa_printf(MSG_DEBUG, "WPS ER: SetSelectedRegistrar - sel_reg=%d "
1114                    "dev_password_id=%u sel_reg_config_methods=0x%x",
1115                    sel_reg, dev_passwd_id, sel_reg_config_methods);
1116         wps_er_set_sel_reg(wpa_s->wps_er, sel_reg, dev_passwd_id,
1117                            sel_reg_config_methods);
1118 #endif /* CONFIG_WPS_ER */
1119 }
1120
1121
1122 static u16 wps_fix_config_methods(u16 config_methods)
1123 {
1124 #ifdef CONFIG_WPS2
1125         if ((config_methods &
1126              (WPS_CONFIG_DISPLAY | WPS_CONFIG_VIRT_DISPLAY |
1127               WPS_CONFIG_PHY_DISPLAY)) == WPS_CONFIG_DISPLAY) {
1128                 wpa_printf(MSG_INFO, "WPS: Converting display to "
1129                            "virtual_display for WPS 2.0 compliance");
1130                 config_methods |= WPS_CONFIG_VIRT_DISPLAY;
1131         }
1132         if ((config_methods &
1133              (WPS_CONFIG_PUSHBUTTON | WPS_CONFIG_VIRT_PUSHBUTTON |
1134               WPS_CONFIG_PHY_PUSHBUTTON)) == WPS_CONFIG_PUSHBUTTON) {
1135                 wpa_printf(MSG_INFO, "WPS: Converting push_button to "
1136                            "virtual_push_button for WPS 2.0 compliance");
1137                 config_methods |= WPS_CONFIG_VIRT_PUSHBUTTON;
1138         }
1139 #endif /* CONFIG_WPS2 */
1140
1141         return config_methods;
1142 }
1143
1144
1145 static void wpas_wps_set_uuid(struct wpa_supplicant *wpa_s,
1146                               struct wps_context *wps)
1147 {
1148         wpa_printf(MSG_DEBUG, "WPS: Set UUID for interface %s", wpa_s->ifname);
1149         if (is_nil_uuid(wpa_s->conf->uuid)) {
1150                 struct wpa_supplicant *first;
1151                 first = wpa_s->global->ifaces;
1152                 while (first && first->next)
1153                         first = first->next;
1154                 if (first && first != wpa_s) {
1155                         if (wps != wpa_s->global->ifaces->wps)
1156                                 os_memcpy(wps->uuid,
1157                                           wpa_s->global->ifaces->wps->uuid,
1158                                           WPS_UUID_LEN);
1159                         wpa_hexdump(MSG_DEBUG, "WPS: UUID from the first "
1160                                     "interface", wps->uuid, WPS_UUID_LEN);
1161                 } else {
1162                         uuid_gen_mac_addr(wpa_s->own_addr, wps->uuid);
1163                         wpa_hexdump(MSG_DEBUG, "WPS: UUID based on MAC "
1164                                     "address", wps->uuid, WPS_UUID_LEN);
1165                 }
1166         } else {
1167                 os_memcpy(wps->uuid, wpa_s->conf->uuid, WPS_UUID_LEN);
1168                 wpa_hexdump(MSG_DEBUG, "WPS: UUID based on configuration",
1169                             wps->uuid, WPS_UUID_LEN);
1170         }
1171 }
1172
1173
1174 static void wpas_wps_set_vendor_ext_m1(struct wpa_supplicant *wpa_s,
1175                                        struct wps_context *wps)
1176 {
1177         wpabuf_free(wps->dev.vendor_ext_m1);
1178         wps->dev.vendor_ext_m1 = NULL;
1179
1180         if (wpa_s->conf->wps_vendor_ext_m1) {
1181                 wps->dev.vendor_ext_m1 =
1182                         wpabuf_dup(wpa_s->conf->wps_vendor_ext_m1);
1183                 if (!wps->dev.vendor_ext_m1) {
1184                         wpa_printf(MSG_ERROR, "WPS: Cannot "
1185                                    "allocate memory for vendor_ext_m1");
1186                 }
1187         }
1188 }
1189
1190
1191 int wpas_wps_init(struct wpa_supplicant *wpa_s)
1192 {
1193         struct wps_context *wps;
1194         struct wps_registrar_config rcfg;
1195         struct hostapd_hw_modes *modes;
1196         u16 m;
1197
1198         wps = os_zalloc(sizeof(*wps));
1199         if (wps == NULL)
1200                 return -1;
1201
1202         wps->cred_cb = wpa_supplicant_wps_cred;
1203         wps->event_cb = wpa_supplicant_wps_event;
1204         wps->cb_ctx = wpa_s;
1205
1206         wps->dev.device_name = wpa_s->conf->device_name;
1207         wps->dev.manufacturer = wpa_s->conf->manufacturer;
1208         wps->dev.model_name = wpa_s->conf->model_name;
1209         wps->dev.model_number = wpa_s->conf->model_number;
1210         wps->dev.serial_number = wpa_s->conf->serial_number;
1211         wps->config_methods =
1212                 wps_config_methods_str2bin(wpa_s->conf->config_methods);
1213         if ((wps->config_methods & (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) ==
1214             (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
1215                 wpa_printf(MSG_ERROR, "WPS: Both Label and Display config "
1216                            "methods are not allowed at the same time");
1217                 os_free(wps);
1218                 return -1;
1219         }
1220         wps->config_methods = wps_fix_config_methods(wps->config_methods);
1221         wps->dev.config_methods = wps->config_methods;
1222         os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type,
1223                   WPS_DEV_TYPE_LEN);
1224
1225         wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
1226         os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type,
1227                   WPS_DEV_TYPE_LEN * wps->dev.num_sec_dev_types);
1228
1229         wpas_wps_set_vendor_ext_m1(wpa_s, wps);
1230
1231         wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
1232         modes = wpa_s->hw.modes;
1233         if (modes) {
1234                 for (m = 0; m < wpa_s->hw.num_modes; m++) {
1235                         if (modes[m].mode == HOSTAPD_MODE_IEEE80211B ||
1236                             modes[m].mode == HOSTAPD_MODE_IEEE80211G)
1237                                 wps->dev.rf_bands |= WPS_RF_24GHZ;
1238                         else if (modes[m].mode == HOSTAPD_MODE_IEEE80211A)
1239                                 wps->dev.rf_bands |= WPS_RF_50GHZ;
1240                 }
1241         }
1242         if (wps->dev.rf_bands == 0) {
1243                 /*
1244                  * Default to claiming support for both bands if the driver
1245                  * does not provide support for fetching supported bands.
1246                  */
1247                 wps->dev.rf_bands = WPS_RF_24GHZ | WPS_RF_50GHZ;
1248         }
1249         os_memcpy(wps->dev.mac_addr, wpa_s->own_addr, ETH_ALEN);
1250         wpas_wps_set_uuid(wpa_s, wps);
1251
1252         wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK;
1253         wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP;
1254
1255         os_memset(&rcfg, 0, sizeof(rcfg));
1256         rcfg.new_psk_cb = wpas_wps_new_psk_cb;
1257         rcfg.pin_needed_cb = wpas_wps_pin_needed_cb;
1258         rcfg.set_sel_reg_cb = wpas_wps_set_sel_reg_cb;
1259         rcfg.cb_ctx = wpa_s;
1260
1261         wps->registrar = wps_registrar_init(wps, &rcfg);
1262         if (wps->registrar == NULL) {
1263                 wpa_printf(MSG_DEBUG, "Failed to initialize WPS Registrar");
1264                 os_free(wps);
1265                 return -1;
1266         }
1267
1268         wpa_s->wps = wps;
1269
1270         return 0;
1271 }
1272
1273
1274 void wpas_wps_deinit(struct wpa_supplicant *wpa_s)
1275 {
1276         eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
1277         eloop_cancel_timeout(wpas_wps_reenable_networks_cb, wpa_s, NULL);
1278         wpas_wps_clear_ap_info(wpa_s);
1279
1280         if (wpa_s->wps == NULL)
1281                 return;
1282
1283 #ifdef CONFIG_WPS_ER
1284         wps_er_deinit(wpa_s->wps_er, NULL, NULL);
1285         wpa_s->wps_er = NULL;
1286 #endif /* CONFIG_WPS_ER */
1287
1288         wps_registrar_deinit(wpa_s->wps->registrar);
1289         wpabuf_free(wpa_s->wps->dh_pubkey);
1290         wpabuf_free(wpa_s->wps->dh_privkey);
1291         wpabuf_free(wpa_s->wps->dev.vendor_ext_m1);
1292         os_free(wpa_s->wps->network_key);
1293         os_free(wpa_s->wps);
1294         wpa_s->wps = NULL;
1295 }
1296
1297
1298 int wpas_wps_ssid_bss_match(struct wpa_supplicant *wpa_s,
1299                             struct wpa_ssid *ssid, struct wpa_bss *bss)
1300 {
1301         struct wpabuf *wps_ie;
1302
1303         if (!(ssid->key_mgmt & WPA_KEY_MGMT_WPS))
1304                 return -1;
1305
1306         wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1307         if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
1308                 if (!wps_ie) {
1309                         wpa_printf(MSG_DEBUG, "   skip - non-WPS AP");
1310                         return 0;
1311                 }
1312
1313                 if (!wps_is_selected_pbc_registrar(wps_ie)) {
1314                         wpa_printf(MSG_DEBUG, "   skip - WPS AP "
1315                                    "without active PBC Registrar");
1316                         wpabuf_free(wps_ie);
1317                         return 0;
1318                 }
1319
1320                 /* TODO: overlap detection */
1321                 wpa_printf(MSG_DEBUG, "   selected based on WPS IE "
1322                            "(Active PBC)");
1323                 wpabuf_free(wps_ie);
1324                 return 1;
1325         }
1326
1327         if (eap_is_wps_pin_enrollee(&ssid->eap)) {
1328                 if (!wps_ie) {
1329                         wpa_printf(MSG_DEBUG, "   skip - non-WPS AP");
1330                         return 0;
1331                 }
1332
1333                 /*
1334                  * Start with WPS APs that advertise our address as an
1335                  * authorized MAC (v2.0) or active PIN Registrar (v1.0) and
1336                  * allow any WPS AP after couple of scans since some APs do not
1337                  * set Selected Registrar attribute properly when using
1338                  * external Registrar.
1339                  */
1340                 if (!wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1)) {
1341                         if (wpa_s->scan_runs < WPS_PIN_SCAN_IGNORE_SEL_REG) {
1342                                 wpa_printf(MSG_DEBUG, "   skip - WPS AP "
1343                                            "without active PIN Registrar");
1344                                 wpabuf_free(wps_ie);
1345                                 return 0;
1346                         }
1347                         wpa_printf(MSG_DEBUG, "   selected based on WPS IE");
1348                 } else {
1349                         wpa_printf(MSG_DEBUG, "   selected based on WPS IE "
1350                                    "(Authorized MAC or Active PIN)");
1351                 }
1352                 wpabuf_free(wps_ie);
1353                 return 1;
1354         }
1355
1356         if (wps_ie) {
1357                 wpa_printf(MSG_DEBUG, "   selected based on WPS IE");
1358                 wpabuf_free(wps_ie);
1359                 return 1;
1360         }
1361
1362         return -1;
1363 }
1364
1365
1366 int wpas_wps_ssid_wildcard_ok(struct wpa_supplicant *wpa_s,
1367                               struct wpa_ssid *ssid,
1368                               struct wpa_bss *bss)
1369 {
1370         struct wpabuf *wps_ie = NULL;
1371         int ret = 0;
1372
1373         if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
1374                 wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1375                 if (wps_ie && wps_is_selected_pbc_registrar(wps_ie)) {
1376                         /* allow wildcard SSID for WPS PBC */
1377                         ret = 1;
1378                 }
1379         } else if (eap_is_wps_pin_enrollee(&ssid->eap)) {
1380                 wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1381                 if (wps_ie &&
1382                     (wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1) ||
1383                      wpa_s->scan_runs >= WPS_PIN_SCAN_IGNORE_SEL_REG)) {
1384                         /* allow wildcard SSID for WPS PIN */
1385                         ret = 1;
1386                 }
1387         }
1388
1389         if (!ret && ssid->bssid_set &&
1390             os_memcmp(ssid->bssid, bss->bssid, ETH_ALEN) == 0) {
1391                 /* allow wildcard SSID due to hardcoded BSSID match */
1392                 ret = 1;
1393         }
1394
1395 #ifdef CONFIG_WPS_STRICT
1396         if (wps_ie) {
1397                 if (wps_validate_beacon_probe_resp(wps_ie, bss->beacon_ie_len >
1398                                                    0, bss->bssid) < 0)
1399                         ret = 0;
1400                 if (bss->beacon_ie_len) {
1401                         struct wpabuf *bcn_wps;
1402                         bcn_wps = wpa_bss_get_vendor_ie_multi_beacon(
1403                                 bss, WPS_IE_VENDOR_TYPE);
1404                         if (bcn_wps == NULL) {
1405                                 wpa_printf(MSG_DEBUG, "WPS: Mandatory WPS IE "
1406                                            "missing from AP Beacon");
1407                                 ret = 0;
1408                         } else {
1409                                 if (wps_validate_beacon(wps_ie) < 0)
1410                                         ret = 0;
1411                                 wpabuf_free(bcn_wps);
1412                         }
1413                 }
1414         }
1415 #endif /* CONFIG_WPS_STRICT */
1416
1417         wpabuf_free(wps_ie);
1418
1419         return ret;
1420 }
1421
1422
1423 int wpas_wps_scan_pbc_overlap(struct wpa_supplicant *wpa_s,
1424                               struct wpa_bss *selected, struct wpa_ssid *ssid)
1425 {
1426         const u8 *sel_uuid, *uuid;
1427         struct wpabuf *wps_ie;
1428         int ret = 0;
1429         struct wpa_bss *bss;
1430
1431         if (!eap_is_wps_pbc_enrollee(&ssid->eap))
1432                 return 0;
1433
1434         wpa_printf(MSG_DEBUG, "WPS: Check whether PBC session overlap is "
1435                    "present in scan results; selected BSSID " MACSTR,
1436                    MAC2STR(selected->bssid));
1437
1438         /* Make sure that only one AP is in active PBC mode */
1439         wps_ie = wpa_bss_get_vendor_ie_multi(selected, WPS_IE_VENDOR_TYPE);
1440         if (wps_ie) {
1441                 sel_uuid = wps_get_uuid_e(wps_ie);
1442                 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the selected BSS",
1443                             sel_uuid, UUID_LEN);
1444         } else {
1445                 wpa_printf(MSG_DEBUG, "WPS: Selected BSS does not include "
1446                            "WPS IE?!");
1447                 sel_uuid = NULL;
1448         }
1449
1450         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1451                 struct wpabuf *ie;
1452                 if (bss == selected)
1453                         continue;
1454                 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1455                 if (!ie)
1456                         continue;
1457                 if (!wps_is_selected_pbc_registrar(ie)) {
1458                         wpabuf_free(ie);
1459                         continue;
1460                 }
1461                 wpa_printf(MSG_DEBUG, "WPS: Another BSS in active PBC mode: "
1462                            MACSTR, MAC2STR(bss->bssid));
1463                 uuid = wps_get_uuid_e(ie);
1464                 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the other BSS",
1465                             uuid, UUID_LEN);
1466                 if (sel_uuid == NULL || uuid == NULL ||
1467                     os_memcmp(sel_uuid, uuid, UUID_LEN) != 0) {
1468                         ret = 1; /* PBC overlap */
1469                         wpa_msg(wpa_s, MSG_INFO, "WPS: PBC overlap detected: "
1470                                 MACSTR " and " MACSTR,
1471                                 MAC2STR(selected->bssid),
1472                                 MAC2STR(bss->bssid));
1473                         wpabuf_free(ie);
1474                         break;
1475                 }
1476
1477                 /* TODO: verify that this is reasonable dual-band situation */
1478
1479                 wpabuf_free(ie);
1480         }
1481
1482         wpabuf_free(wps_ie);
1483
1484         return ret;
1485 }
1486
1487
1488 void wpas_wps_notify_scan_results(struct wpa_supplicant *wpa_s)
1489 {
1490         struct wpa_bss *bss;
1491         unsigned int pbc = 0, auth = 0, pin = 0, wps = 0;
1492
1493         if (wpa_s->disconnected || wpa_s->wpa_state >= WPA_ASSOCIATED)
1494                 return;
1495
1496         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1497                 struct wpabuf *ie;
1498                 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1499                 if (!ie)
1500                         continue;
1501                 if (wps_is_selected_pbc_registrar(ie))
1502                         pbc++;
1503                 else if (wps_is_addr_authorized(ie, wpa_s->own_addr, 0))
1504                         auth++;
1505                 else if (wps_is_selected_pin_registrar(ie))
1506                         pin++;
1507                 else
1508                         wps++;
1509                 wpabuf_free(ie);
1510         }
1511
1512         if (pbc)
1513                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PBC);
1514         else if (auth)
1515                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_AUTH);
1516         else if (pin)
1517                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PIN);
1518         else if (wps)
1519                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE);
1520 }
1521
1522
1523 int wpas_wps_searching(struct wpa_supplicant *wpa_s)
1524 {
1525         struct wpa_ssid *ssid;
1526
1527         for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1528                 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && !ssid->disabled)
1529                         return 1;
1530         }
1531
1532         return 0;
1533 }
1534
1535
1536 int wpas_wps_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
1537                               char *end)
1538 {
1539         struct wpabuf *wps_ie;
1540         int ret;
1541
1542         wps_ie = ieee802_11_vendor_ie_concat(ies, ies_len, WPS_DEV_OUI_WFA);
1543         if (wps_ie == NULL)
1544                 return 0;
1545
1546         ret = wps_attr_text(wps_ie, buf, end);
1547         wpabuf_free(wps_ie);
1548         return ret;
1549 }
1550
1551
1552 int wpas_wps_er_start(struct wpa_supplicant *wpa_s, const char *filter)
1553 {
1554 #ifdef CONFIG_WPS_ER
1555         if (wpa_s->wps_er) {
1556                 wps_er_refresh(wpa_s->wps_er);
1557                 return 0;
1558         }
1559         wpa_s->wps_er = wps_er_init(wpa_s->wps, wpa_s->ifname, filter);
1560         if (wpa_s->wps_er == NULL)
1561                 return -1;
1562         return 0;
1563 #else /* CONFIG_WPS_ER */
1564         return 0;
1565 #endif /* CONFIG_WPS_ER */
1566 }
1567
1568
1569 int wpas_wps_er_stop(struct wpa_supplicant *wpa_s)
1570 {
1571 #ifdef CONFIG_WPS_ER
1572         wps_er_deinit(wpa_s->wps_er, NULL, NULL);
1573         wpa_s->wps_er = NULL;
1574 #endif /* CONFIG_WPS_ER */
1575         return 0;
1576 }
1577
1578
1579 #ifdef CONFIG_WPS_ER
1580 int wpas_wps_er_add_pin(struct wpa_supplicant *wpa_s, const u8 *addr,
1581                         const char *uuid, const char *pin)
1582 {
1583         u8 u[UUID_LEN];
1584         int any = 0;
1585
1586         if (os_strcmp(uuid, "any") == 0)
1587                 any = 1;
1588         else if (uuid_str2bin(uuid, u))
1589                 return -1;
1590         return wps_registrar_add_pin(wpa_s->wps->registrar, addr,
1591                                      any ? NULL : u,
1592                                      (const u8 *) pin, os_strlen(pin), 300);
1593 }
1594
1595
1596 int wpas_wps_er_pbc(struct wpa_supplicant *wpa_s, const char *uuid)
1597 {
1598         u8 u[UUID_LEN];
1599
1600         if (uuid_str2bin(uuid, u))
1601                 return -1;
1602         return wps_er_pbc(wpa_s->wps_er, u);
1603 }
1604
1605
1606 int wpas_wps_er_learn(struct wpa_supplicant *wpa_s, const char *uuid,
1607                       const char *pin)
1608 {
1609         u8 u[UUID_LEN];
1610
1611         if (uuid_str2bin(uuid, u))
1612                 return -1;
1613         return wps_er_learn(wpa_s->wps_er, u, (const u8 *) pin,
1614                             os_strlen(pin));
1615 }
1616
1617
1618 int wpas_wps_er_set_config(struct wpa_supplicant *wpa_s, const char *uuid,
1619                            int id)
1620 {
1621         u8 u[UUID_LEN];
1622         struct wpa_ssid *ssid;
1623         struct wps_credential cred;
1624
1625         if (uuid_str2bin(uuid, u))
1626                 return -1;
1627         ssid = wpa_config_get_network(wpa_s->conf, id);
1628         if (ssid == NULL || ssid->ssid == NULL)
1629                 return -1;
1630
1631         os_memset(&cred, 0, sizeof(cred));
1632         if (ssid->ssid_len > 32)
1633                 return -1;
1634         os_memcpy(cred.ssid, ssid->ssid, ssid->ssid_len);
1635         cred.ssid_len = ssid->ssid_len;
1636         if (ssid->key_mgmt & WPA_KEY_MGMT_PSK) {
1637                 cred.auth_type = (ssid->proto & WPA_PROTO_RSN) ?
1638                         WPS_AUTH_WPA2PSK : WPS_AUTH_WPAPSK;
1639                 if (ssid->pairwise_cipher & WPA_CIPHER_CCMP)
1640                         cred.encr_type = WPS_ENCR_AES;
1641                 else
1642                         cred.encr_type = WPS_ENCR_TKIP;
1643                 if (ssid->passphrase) {
1644                         cred.key_len = os_strlen(ssid->passphrase);
1645                         if (cred.key_len >= 64)
1646                                 return -1;
1647                         os_memcpy(cred.key, ssid->passphrase, cred.key_len);
1648                 } else if (ssid->psk_set) {
1649                         cred.key_len = 32;
1650                         os_memcpy(cred.key, ssid->psk, 32);
1651                 } else
1652                         return -1;
1653         } else {
1654                 cred.auth_type = WPS_AUTH_OPEN;
1655                 cred.encr_type = WPS_ENCR_NONE;
1656         }
1657         return wps_er_set_config(wpa_s->wps_er, u, &cred);
1658 }
1659
1660
1661 int wpas_wps_er_config(struct wpa_supplicant *wpa_s, const char *uuid,
1662                        const char *pin, struct wps_new_ap_settings *settings)
1663 {
1664         u8 u[UUID_LEN];
1665         struct wps_credential cred;
1666         size_t len;
1667
1668         if (uuid_str2bin(uuid, u))
1669                 return -1;
1670         if (settings->ssid_hex == NULL || settings->auth == NULL ||
1671             settings->encr == NULL || settings->key_hex == NULL)
1672                 return -1;
1673
1674         os_memset(&cred, 0, sizeof(cred));
1675         len = os_strlen(settings->ssid_hex);
1676         if ((len & 1) || len > 2 * sizeof(cred.ssid) ||
1677             hexstr2bin(settings->ssid_hex, cred.ssid, len / 2))
1678                 return -1;
1679         cred.ssid_len = len / 2;
1680
1681         len = os_strlen(settings->key_hex);
1682         if ((len & 1) || len > 2 * sizeof(cred.key) ||
1683             hexstr2bin(settings->key_hex, cred.key, len / 2))
1684                 return -1;
1685         cred.key_len = len / 2;
1686
1687         if (os_strcmp(settings->auth, "OPEN") == 0)
1688                 cred.auth_type = WPS_AUTH_OPEN;
1689         else if (os_strcmp(settings->auth, "WPAPSK") == 0)
1690                 cred.auth_type = WPS_AUTH_WPAPSK;
1691         else if (os_strcmp(settings->auth, "WPA2PSK") == 0)
1692                 cred.auth_type = WPS_AUTH_WPA2PSK;
1693         else
1694                 return -1;
1695
1696         if (os_strcmp(settings->encr, "NONE") == 0)
1697                 cred.encr_type = WPS_ENCR_NONE;
1698         else if (os_strcmp(settings->encr, "WEP") == 0)
1699                 cred.encr_type = WPS_ENCR_WEP;
1700         else if (os_strcmp(settings->encr, "TKIP") == 0)
1701                 cred.encr_type = WPS_ENCR_TKIP;
1702         else if (os_strcmp(settings->encr, "CCMP") == 0)
1703                 cred.encr_type = WPS_ENCR_AES;
1704         else
1705                 return -1;
1706
1707         return wps_er_config(wpa_s->wps_er, u, (const u8 *) pin,
1708                              os_strlen(pin), &cred);
1709 }
1710
1711
1712 #ifdef CONFIG_WPS_NFC
1713 struct wpabuf * wpas_wps_er_nfc_config_token(struct wpa_supplicant *wpa_s,
1714                                              int ndef, const char *uuid)
1715 {
1716         struct wpabuf *ret;
1717         u8 u[UUID_LEN];
1718
1719         if (!wpa_s->wps_er)
1720                 return NULL;
1721
1722         if (uuid_str2bin(uuid, u))
1723                 return NULL;
1724
1725         ret = wps_er_nfc_config_token(wpa_s->wps_er, u);
1726         if (ndef && ret) {
1727                 struct wpabuf *tmp;
1728                 tmp = ndef_build_wifi(ret);
1729                 wpabuf_free(ret);
1730                 if (tmp == NULL)
1731                         return NULL;
1732                 ret = tmp;
1733         }
1734
1735         return ret;
1736 }
1737 #endif /* CONFIG_WPS_NFC */
1738
1739
1740 static int callbacks_pending = 0;
1741
1742 static void wpas_wps_terminate_cb(void *ctx)
1743 {
1744         wpa_printf(MSG_DEBUG, "WPS ER: Terminated");
1745         if (--callbacks_pending <= 0)
1746                 eloop_terminate();
1747 }
1748 #endif /* CONFIG_WPS_ER */
1749
1750
1751 int wpas_wps_terminate_pending(struct wpa_supplicant *wpa_s)
1752 {
1753 #ifdef CONFIG_WPS_ER
1754         if (wpa_s->wps_er) {
1755                 callbacks_pending++;
1756                 wps_er_deinit(wpa_s->wps_er, wpas_wps_terminate_cb, wpa_s);
1757                 wpa_s->wps_er = NULL;
1758                 return 1;
1759         }
1760 #endif /* CONFIG_WPS_ER */
1761         return 0;
1762 }
1763
1764
1765 int wpas_wps_in_progress(struct wpa_supplicant *wpa_s)
1766 {
1767         struct wpa_ssid *ssid;
1768
1769         for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1770                 if (!ssid->disabled && ssid->key_mgmt == WPA_KEY_MGMT_WPS)
1771                         return 1;
1772         }
1773
1774         return 0;
1775 }
1776
1777
1778 void wpas_wps_update_config(struct wpa_supplicant *wpa_s)
1779 {
1780         struct wps_context *wps = wpa_s->wps;
1781
1782         if (wps == NULL)
1783                 return;
1784
1785         if (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS) {
1786                 wps->config_methods = wps_config_methods_str2bin(
1787                         wpa_s->conf->config_methods);
1788                 if ((wps->config_methods &
1789                      (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) ==
1790                     (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
1791                         wpa_printf(MSG_ERROR, "WPS: Both Label and Display "
1792                                    "config methods are not allowed at the "
1793                                    "same time");
1794                         wps->config_methods &= ~WPS_CONFIG_LABEL;
1795                 }
1796         }
1797         wps->config_methods = wps_fix_config_methods(wps->config_methods);
1798         wps->dev.config_methods = wps->config_methods;
1799
1800         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
1801                 os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type,
1802                           WPS_DEV_TYPE_LEN);
1803
1804         if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE) {
1805                 wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
1806                 os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type,
1807                           wps->dev.num_sec_dev_types * WPS_DEV_TYPE_LEN);
1808         }
1809
1810         if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION)
1811                 wpas_wps_set_vendor_ext_m1(wpa_s, wps);
1812
1813         if (wpa_s->conf->changed_parameters & CFG_CHANGED_OS_VERSION)
1814                 wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
1815
1816         if (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID)
1817                 wpas_wps_set_uuid(wpa_s, wps);
1818
1819         if (wpa_s->conf->changed_parameters &
1820             (CFG_CHANGED_DEVICE_NAME | CFG_CHANGED_WPS_STRING)) {
1821                 /* Update pointers to make sure they refer current values */
1822                 wps->dev.device_name = wpa_s->conf->device_name;
1823                 wps->dev.manufacturer = wpa_s->conf->manufacturer;
1824                 wps->dev.model_name = wpa_s->conf->model_name;
1825                 wps->dev.model_number = wpa_s->conf->model_number;
1826                 wps->dev.serial_number = wpa_s->conf->serial_number;
1827         }
1828 }
1829
1830
1831 #ifdef CONFIG_WPS_NFC
1832
1833 struct wpabuf * wpas_wps_nfc_token(struct wpa_supplicant *wpa_s, int ndef)
1834 {
1835         return wps_nfc_token_gen(ndef, &wpa_s->conf->wps_nfc_dev_pw_id,
1836                                  &wpa_s->conf->wps_nfc_dh_pubkey,
1837                                  &wpa_s->conf->wps_nfc_dh_privkey,
1838                                  &wpa_s->conf->wps_nfc_dev_pw);
1839 }
1840
1841
1842 int wpas_wps_start_nfc(struct wpa_supplicant *wpa_s, const u8 *bssid)
1843 {
1844         struct wps_context *wps = wpa_s->wps;
1845         char pw[32 * 2 + 1];
1846
1847         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL ||
1848             wpa_s->conf->wps_nfc_dh_privkey == NULL ||
1849             wpa_s->conf->wps_nfc_dev_pw == NULL)
1850                 return -1;
1851
1852         dh5_free(wps->dh_ctx);
1853         wpabuf_free(wps->dh_pubkey);
1854         wpabuf_free(wps->dh_privkey);
1855         wps->dh_privkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
1856         wps->dh_pubkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
1857         if (wps->dh_privkey == NULL || wps->dh_pubkey == NULL) {
1858                 wps->dh_ctx = NULL;
1859                 wpabuf_free(wps->dh_pubkey);
1860                 wps->dh_pubkey = NULL;
1861                 wpabuf_free(wps->dh_privkey);
1862                 wps->dh_privkey = NULL;
1863                 return -1;
1864         }
1865         wps->dh_ctx = dh5_init_fixed(wps->dh_privkey, wps->dh_pubkey);
1866         if (wps->dh_ctx == NULL)
1867                 return -1;
1868
1869         wpa_snprintf_hex_uppercase(pw, sizeof(pw),
1870                                    wpabuf_head(wpa_s->conf->wps_nfc_dev_pw),
1871                                    wpabuf_len(wpa_s->conf->wps_nfc_dev_pw));
1872         return wpas_wps_start_pin(wpa_s, bssid, pw, 0,
1873                                   wpa_s->conf->wps_nfc_dev_pw_id);
1874 }
1875
1876
1877 static int wpas_wps_use_cred(struct wpa_supplicant *wpa_s,
1878                              struct wps_parse_attr *attr)
1879 {
1880         wpa_s->wps_ap_channel = 0;
1881
1882         if (wps_oob_use_cred(wpa_s->wps, attr) < 0)
1883                 return -1;
1884
1885         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
1886                 return 0;
1887
1888         wpa_printf(MSG_DEBUG, "WPS: Request reconnection with new network "
1889                    "based on the received credential added");
1890         wpa_s->normal_scans = 0;
1891         wpa_supplicant_reinit_autoscan(wpa_s);
1892         if (wpa_s->wps_ap_channel) {
1893                 u16 chan = wpa_s->wps_ap_channel;
1894                 int freq = 0;
1895
1896                 if (chan >= 1 && chan <= 13)
1897                         freq = 2407 + 5 * chan;
1898                 else if (chan == 14)
1899                         freq = 2484;
1900                 else if (chan >= 30)
1901                         freq = 5000 + 5 * chan;
1902
1903                 if (freq) {
1904                         wpa_printf(MSG_DEBUG, "WPS: Credential indicated "
1905                                    "AP channel %u -> %u MHz", chan, freq);
1906                         wpa_s->after_wps = 5;
1907                         wpa_s->wps_freq = freq;
1908                 }
1909         }
1910         wpa_s->disconnected = 0;
1911         wpa_s->reassociate = 1;
1912         wpa_supplicant_req_scan(wpa_s, 0, 0);
1913
1914         return 0;
1915 }
1916
1917
1918 #ifdef CONFIG_WPS_ER
1919 static int wpas_wps_add_nfc_password_token(struct wpa_supplicant *wpa_s,
1920                                            struct wps_parse_attr *attr)
1921 {
1922         return wps_registrar_add_nfc_password_token(
1923                 wpa_s->wps->registrar, attr->oob_dev_password,
1924                 attr->oob_dev_password_len);
1925 }
1926 #endif /* CONFIG_WPS_ER */
1927
1928
1929 static int wpas_wps_nfc_tag_process(struct wpa_supplicant *wpa_s,
1930                                     const struct wpabuf *wps)
1931 {
1932         struct wps_parse_attr attr;
1933
1934         wpa_hexdump_buf(MSG_DEBUG, "WPS: Received NFC tag payload", wps);
1935
1936         if (wps_parse_msg(wps, &attr)) {
1937                 wpa_printf(MSG_DEBUG, "WPS: Ignore invalid data from NFC tag");
1938                 return -1;
1939         }
1940
1941         if (attr.num_cred)
1942                 return wpas_wps_use_cred(wpa_s, &attr);
1943
1944 #ifdef CONFIG_WPS_ER
1945         if (attr.oob_dev_password)
1946                 return wpas_wps_add_nfc_password_token(wpa_s, &attr);
1947 #endif /* CONFIG_WPS_ER */
1948
1949         wpa_printf(MSG_DEBUG, "WPS: Ignore unrecognized NFC tag");
1950         return -1;
1951 }
1952
1953
1954 int wpas_wps_nfc_tag_read(struct wpa_supplicant *wpa_s,
1955                           const struct wpabuf *data)
1956 {
1957         const struct wpabuf *wps = data;
1958         struct wpabuf *tmp = NULL;
1959         int ret;
1960
1961         if (wpabuf_len(data) < 4)
1962                 return -1;
1963
1964         if (*wpabuf_head_u8(data) != 0x10) {
1965                 /* Assume this contains full NDEF record */
1966                 tmp = ndef_parse_wifi(data);
1967                 if (tmp == NULL) {
1968                         wpa_printf(MSG_DEBUG, "WPS: Could not parse NDEF");
1969                         return -1;
1970                 }
1971                 wps = tmp;
1972         }
1973
1974         ret = wpas_wps_nfc_tag_process(wpa_s, wps);
1975         wpabuf_free(tmp);
1976         return ret;
1977 }
1978
1979
1980 struct wpabuf * wpas_wps_nfc_handover_req(struct wpa_supplicant *wpa_s, int cr)
1981 {
1982         if (cr)
1983                 return ndef_build_wifi_hc(1);
1984         return ndef_build_wifi_hr();
1985 }
1986
1987
1988 struct wpabuf * wpas_wps_nfc_handover_sel(struct wpa_supplicant *wpa_s)
1989 {
1990         return NULL;
1991 }
1992
1993
1994 int wpas_wps_nfc_rx_handover_req(struct wpa_supplicant *wpa_s,
1995                                  const struct wpabuf *data)
1996 {
1997         /* TODO */
1998         return -1;
1999 }
2000
2001
2002 int wpas_wps_nfc_rx_handover_sel(struct wpa_supplicant *wpa_s,
2003                                  const struct wpabuf *data)
2004 {
2005         struct wpabuf *wps;
2006         int ret;
2007
2008         wps = ndef_parse_wifi(data);
2009         if (wps == NULL)
2010                 return -1;
2011         wpa_printf(MSG_DEBUG, "WPS: Received application/vnd.wfa.wsc "
2012                    "payload from NFC connection handover");
2013         wpa_hexdump_buf_key(MSG_DEBUG, "WPS: NFC payload", wps);
2014         ret = wpas_wps_nfc_tag_process(wpa_s, wps);
2015         wpabuf_free(wps);
2016
2017         return ret;
2018 }
2019
2020 #endif /* CONFIG_WPS_NFC */
2021
2022
2023 extern int wpa_debug_level;
2024
2025 static void wpas_wps_dump_ap_info(struct wpa_supplicant *wpa_s)
2026 {
2027         size_t i;
2028         struct os_time now;
2029
2030         if (wpa_debug_level > MSG_DEBUG)
2031                 return;
2032
2033         if (wpa_s->wps_ap == NULL)
2034                 return;
2035
2036         os_get_time(&now);
2037
2038         for (i = 0; i < wpa_s->num_wps_ap; i++) {
2039                 struct wps_ap_info *ap = &wpa_s->wps_ap[i];
2040                 struct wpa_blacklist *e = wpa_blacklist_get(wpa_s, ap->bssid);
2041
2042                 wpa_printf(MSG_DEBUG, "WPS: AP[%d] " MACSTR " type=%d "
2043                            "tries=%d last_attempt=%d sec ago blacklist=%d",
2044                            (int) i, MAC2STR(ap->bssid), ap->type, ap->tries,
2045                            ap->last_attempt.sec > 0 ?
2046                            (int) now.sec - (int) ap->last_attempt.sec : -1,
2047                            e ? e->count : 0);
2048         }
2049 }
2050
2051
2052 static struct wps_ap_info * wpas_wps_get_ap_info(struct wpa_supplicant *wpa_s,
2053                                                  const u8 *bssid)
2054 {
2055         size_t i;
2056
2057         if (wpa_s->wps_ap == NULL)
2058                 return NULL;
2059
2060         for (i = 0; i < wpa_s->num_wps_ap; i++) {
2061                 struct wps_ap_info *ap = &wpa_s->wps_ap[i];
2062                 if (os_memcmp(ap->bssid, bssid, ETH_ALEN) == 0)
2063                         return ap;
2064         }
2065
2066         return NULL;
2067 }
2068
2069
2070 static void wpas_wps_update_ap_info_bss(struct wpa_supplicant *wpa_s,
2071                                         struct wpa_scan_res *res)
2072 {
2073         struct wpabuf *wps;
2074         enum wps_ap_info_type type;
2075         struct wps_ap_info *ap;
2076         int r;
2077
2078         if (wpa_scan_get_vendor_ie(res, WPS_IE_VENDOR_TYPE) == NULL)
2079                 return;
2080
2081         wps = wpa_scan_get_vendor_ie_multi(res, WPS_IE_VENDOR_TYPE);
2082         if (wps == NULL)
2083                 return;
2084
2085         r = wps_is_addr_authorized(wps, wpa_s->own_addr, 1);
2086         if (r == 2)
2087                 type = WPS_AP_SEL_REG_OUR;
2088         else if (r == 1)
2089                 type = WPS_AP_SEL_REG;
2090         else
2091                 type = WPS_AP_NOT_SEL_REG;
2092
2093         wpabuf_free(wps);
2094
2095         ap = wpas_wps_get_ap_info(wpa_s, res->bssid);
2096         if (ap) {
2097                 if (ap->type != type) {
2098                         wpa_printf(MSG_DEBUG, "WPS: AP " MACSTR
2099                                    " changed type %d -> %d",
2100                                    MAC2STR(res->bssid), ap->type, type);
2101                         ap->type = type;
2102                         if (type != WPS_AP_NOT_SEL_REG)
2103                                 wpa_blacklist_del(wpa_s, ap->bssid);
2104                 }
2105                 return;
2106         }
2107
2108         ap = os_realloc_array(wpa_s->wps_ap, wpa_s->num_wps_ap + 1,
2109                               sizeof(struct wps_ap_info));
2110         if (ap == NULL)
2111                 return;
2112
2113         wpa_s->wps_ap = ap;
2114         ap = &wpa_s->wps_ap[wpa_s->num_wps_ap];
2115         wpa_s->num_wps_ap++;
2116
2117         os_memset(ap, 0, sizeof(*ap));
2118         os_memcpy(ap->bssid, res->bssid, ETH_ALEN);
2119         ap->type = type;
2120         wpa_printf(MSG_DEBUG, "WPS: AP " MACSTR " type %d added",
2121                    MAC2STR(ap->bssid), ap->type);
2122 }
2123
2124
2125 void wpas_wps_update_ap_info(struct wpa_supplicant *wpa_s,
2126                              struct wpa_scan_results *scan_res)
2127 {
2128         size_t i;
2129
2130         for (i = 0; i < scan_res->num; i++)
2131                 wpas_wps_update_ap_info_bss(wpa_s, scan_res->res[i]);
2132
2133         wpas_wps_dump_ap_info(wpa_s);
2134 }
2135
2136
2137 void wpas_wps_notify_assoc(struct wpa_supplicant *wpa_s, const u8 *bssid)
2138 {
2139         struct wps_ap_info *ap;
2140         if (!wpa_s->wps_ap_iter)
2141                 return;
2142         ap = wpas_wps_get_ap_info(wpa_s, bssid);
2143         if (ap == NULL)
2144                 return;
2145         ap->tries++;
2146         os_get_time(&ap->last_attempt);
2147 }