wpa_supplicant/wps_supplicant.c

   1 /*
   2  * wpa_supplicant / WPS integration
   3  * Copyright (c) 2008-2010, Jouni Malinen <j@w1.fi>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2 as
   7  * published by the Free Software Foundation.
   8  *
   9  * Alternatively, this software may be distributed under the terms of BSD
  10  * license.
  11  *
  12  * See README and COPYING for more details.
  13  */
  14
  15 #include "includes.h"
  16
  17 #include "common.h"
  18 #include "eloop.h"
  19 #include "uuid.h"
  20 #include "crypto/dh_group5.h"
  21 #include "common/ieee802_11_defs.h"
  22 #include "common/ieee802_11_common.h"
  23 #include "common/wpa_common.h"
  24 #include "common/wpa_ctrl.h"
  25 #include "eap_common/eap_wsc_common.h"
  26 #include "eap_peer/eap.h"
  27 #include "rsn_supp/wpa.h"
  28 #include "config.h"
  29 #include "wpa_supplicant_i.h"
  30 #include "driver_i.h"
  31 #include "notify.h"
  32 #include "blacklist.h"
  33 #include "bss.h"
  34 #include "scan.h"
  35 #include "ap.h"
  36 #include "p2p/p2p.h"
  37 #include "p2p_supplicant.h"
  38 #include "wps_supplicant.h"
  39
  40
  41 #ifndef WPS_PIN_SCAN_IGNORE_SEL_REG
  42 #define WPS_PIN_SCAN_IGNORE_SEL_REG 3
  43 #endif /* WPS_PIN_SCAN_IGNORE_SEL_REG */
  44
  45 static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx);
  46 static void wpas_clear_wps(struct wpa_supplicant *wpa_s);
  47
  48
  49 int wpas_wps_eapol_cb(struct wpa_supplicant *wpa_s)
  50 {
  51         if (!wpa_s->wps_success &&
  52             wpa_s->current_ssid &&
  53             eap_is_wps_pin_enrollee(&wpa_s->current_ssid->eap)) {
  54                 const u8 *bssid = wpa_s->bssid;
  55                 if (is_zero_ether_addr(bssid))
  56                         bssid = wpa_s->pending_bssid;
  57
  58                 wpa_printf(MSG_DEBUG, "WPS: PIN registration with " MACSTR
  59                            " did not succeed - continue trying to find "
  60                            "suitable AP", MAC2STR(bssid));
  61                 wpa_blacklist_add(wpa_s, bssid);
  62
  63                 wpa_supplicant_deauthenticate(wpa_s,
  64                                               WLAN_REASON_DEAUTH_LEAVING);
  65                 wpa_s->reassociate = 1;
  66                 wpa_supplicant_req_scan(wpa_s,
  67                                         wpa_s->blacklist_cleared ? 5 : 0, 0);
  68                 wpa_s->blacklist_cleared = 0;
  69                 return 1;
  70         }
  71
  72         eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
  73
  74         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && wpa_s->current_ssid &&
  75             !(wpa_s->current_ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
  76                 wpa_printf(MSG_DEBUG, "WPS: Network configuration replaced - "
  77                            "try to associate with the received credential");
  78                 wpa_supplicant_deauthenticate(wpa_s,
  79                                               WLAN_REASON_DEAUTH_LEAVING);
  80                 wpa_s->after_wps = 5;
  81                 wpa_s->wps_freq = wpa_s->assoc_freq;
  82                 wpa_s->reassociate = 1;
  83                 wpa_supplicant_req_scan(wpa_s, 0, 0);
  84                 return 1;
  85         }
  86
  87         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && wpa_s->current_ssid) {
  88                 wpa_printf(MSG_DEBUG, "WPS: Registration completed - waiting "
  89                            "for external credential processing");
  90                 wpas_clear_wps(wpa_s);
  91                 wpa_supplicant_deauthenticate(wpa_s,
  92                                               WLAN_REASON_DEAUTH_LEAVING);
  93                 return 1;
  94         }
  95
  96         return 0;
  97 }
  98
  99
 100 static void wpas_wps_security_workaround(struct wpa_supplicant *wpa_s,
 101                                          struct wpa_ssid *ssid,
 102                                          const struct wps_credential *cred)
 103 {
 104         struct wpa_driver_capa capa;
 105         struct wpa_bss *bss;
 106         const u8 *ie;
 107         struct wpa_ie_data adv;
 108         int wpa2 = 0, ccmp = 0;
 109
 110         /*
 111          * Many existing WPS APs do not know how to negotiate WPA2 or CCMP in
 112          * case they are configured for mixed mode operation (WPA+WPA2 and
 113          * TKIP+CCMP). Try to use scan results to figure out whether the AP
 114          * actually supports stronger security and select that if the client
 115          * has support for it, too.
 116          */
 117
 118         if (wpa_drv_get_capa(wpa_s, &capa))
 119                 return; /* Unknown what driver supports */
 120
 121         bss = wpa_bss_get(wpa_s, cred->mac_addr, ssid->ssid, ssid->ssid_len);
 122         if (bss == NULL) {
 123                 wpa_printf(MSG_DEBUG, "WPS: The AP was not found from BSS "
 124                            "table - use credential as-is");
 125                 return;
 126         }
 127
 128         wpa_printf(MSG_DEBUG, "WPS: AP found from BSS table");
 129
 130         ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
 131         if (ie && wpa_parse_wpa_ie(ie, 2 + ie[1], &adv) == 0) {
 132                 wpa2 = 1;
 133                 if (adv.pairwise_cipher & WPA_CIPHER_CCMP)
 134                         ccmp = 1;
 135         } else {
 136                 ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 137                 if (ie && wpa_parse_wpa_ie(ie, 2 + ie[1], &adv) == 0 &&
 138                     adv.pairwise_cipher & WPA_CIPHER_CCMP)
 139                         ccmp = 1;
 140         }
 141
 142         if (ie == NULL && (ssid->proto & WPA_PROTO_WPA) &&
 143             (ssid->pairwise_cipher & WPA_CIPHER_TKIP)) {
 144                 /*
 145                  * TODO: This could be the initial AP configuration and the
 146                  * Beacon contents could change shortly. Should request a new
 147                  * scan and delay addition of the network until the updated
 148                  * scan results are available.
 149                  */
 150                 wpa_printf(MSG_DEBUG, "WPS: The AP did not yet advertise WPA "
 151                            "support - use credential as-is");
 152                 return;
 153         }
 154
 155         if (ccmp && !(ssid->pairwise_cipher & WPA_CIPHER_CCMP) &&
 156             (ssid->pairwise_cipher & WPA_CIPHER_TKIP) &&
 157             (capa.key_mgmt & WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK)) {
 158                 wpa_printf(MSG_DEBUG, "WPS: Add CCMP into the credential "
 159                            "based on scan results");
 160                 if (wpa_s->conf->ap_scan == 1)
 161                         ssid->pairwise_cipher |= WPA_CIPHER_CCMP;
 162                 else
 163                         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
 164         }
 165
 166         if (wpa2 && !(ssid->proto & WPA_PROTO_RSN) &&
 167             (ssid->proto & WPA_PROTO_WPA) &&
 168             (capa.enc & WPA_DRIVER_CAPA_ENC_CCMP)) {
 169                 wpa_printf(MSG_DEBUG, "WPS: Add WPA2 into the credential "
 170                            "based on scan results");
 171                 if (wpa_s->conf->ap_scan == 1)
 172                         ssid->proto |= WPA_PROTO_RSN;
 173                 else
 174                         ssid->proto = WPA_PROTO_RSN;
 175         }
 176 }
 177
 178
 179 static int wpa_supplicant_wps_cred(void *ctx,
 180                                    const struct wps_credential *cred)
 181 {
 182         struct wpa_supplicant *wpa_s = ctx;
 183         struct wpa_ssid *ssid = wpa_s->current_ssid;
 184         u8 key_idx = 0;
 185         u16 auth_type;
 186
 187         if ((wpa_s->conf->wps_cred_processing == 1 ||
 188              wpa_s->conf->wps_cred_processing == 2) && cred->cred_attr) {
 189                 size_t blen = cred->cred_attr_len * 2 + 1;
 190                 char *buf = os_malloc(blen);
 191                 if (buf) {
 192                         wpa_snprintf_hex(buf, blen,
 193                                          cred->cred_attr, cred->cred_attr_len);
 194                         wpa_msg(wpa_s, MSG_INFO, "%s%s",
 195                                 WPS_EVENT_CRED_RECEIVED, buf);
 196                         os_free(buf);
 197                 }
 198
 199                 wpas_notify_wps_credential(wpa_s, cred);
 200         } else
 201                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_CRED_RECEIVED);
 202
 203         wpa_hexdump_key(MSG_DEBUG, "WPS: Received Credential attribute",
 204                         cred->cred_attr, cred->cred_attr_len);
 205
 206         if (wpa_s->conf->wps_cred_processing == 1)
 207                 return 0;
 208
 209         wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID", cred->ssid, cred->ssid_len);
 210         wpa_printf(MSG_DEBUG, "WPS: Authentication Type 0x%x",
 211                    cred->auth_type);
 212         wpa_printf(MSG_DEBUG, "WPS: Encryption Type 0x%x", cred->encr_type);
 213         wpa_printf(MSG_DEBUG, "WPS: Network Key Index %d", cred->key_idx);
 214         wpa_hexdump_key(MSG_DEBUG, "WPS: Network Key",
 215                         cred->key, cred->key_len);
 216         wpa_printf(MSG_DEBUG, "WPS: MAC Address " MACSTR,
 217                    MAC2STR(cred->mac_addr));
 218
 219         auth_type = cred->auth_type;
 220         if (auth_type == (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) {
 221                 wpa_printf(MSG_DEBUG, "WPS: Workaround - convert mixed-mode "
 222                            "auth_type into WPA2PSK");
 223                 auth_type = WPS_AUTH_WPA2PSK;
 224         }
 225
 226         if (auth_type != WPS_AUTH_OPEN &&
 227             auth_type != WPS_AUTH_SHARED &&
 228             auth_type != WPS_AUTH_WPAPSK &&
 229             auth_type != WPS_AUTH_WPA2PSK) {
 230                 wpa_printf(MSG_DEBUG, "WPS: Ignored credentials for "
 231                            "unsupported authentication type 0x%x",
 232                            auth_type);
 233                 return 0;
 234         }
 235
 236         if (ssid && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
 237                 wpa_printf(MSG_DEBUG, "WPS: Replace WPS network block based "
 238                            "on the received credential");
 239                 os_free(ssid->eap.identity);
 240                 ssid->eap.identity = NULL;
 241                 ssid->eap.identity_len = 0;
 242                 os_free(ssid->eap.phase1);
 243                 ssid->eap.phase1 = NULL;
 244                 os_free(ssid->eap.eap_methods);
 245                 ssid->eap.eap_methods = NULL;
 246                 if (!ssid->p2p_group)
 247                         ssid->temporary = 0;
 248         } else {
 249                 wpa_printf(MSG_DEBUG, "WPS: Create a new network based on the "
 250                            "received credential");
 251                 ssid = wpa_config_add_network(wpa_s->conf);
 252                 if (ssid == NULL)
 253                         return -1;
 254                 wpas_notify_network_added(wpa_s, ssid);
 255         }
 256
 257         wpa_config_set_network_defaults(ssid);
 258
 259         os_free(ssid->ssid);
 260         ssid->ssid = os_malloc(cred->ssid_len);
 261         if (ssid->ssid) {
 262                 os_memcpy(ssid->ssid, cred->ssid, cred->ssid_len);
 263                 ssid->ssid_len = cred->ssid_len;
 264         }
 265
 266         switch (cred->encr_type) {
 267         case WPS_ENCR_NONE:
 268                 break;
 269         case WPS_ENCR_WEP:
 270                 if (cred->key_len <= 0)
 271                         break;
 272                 if (cred->key_len != 5 && cred->key_len != 13 &&
 273                     cred->key_len != 10 && cred->key_len != 26) {
 274                         wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key length "
 275                                    "%lu", (unsigned long) cred->key_len);
 276                         return -1;
 277                 }
 278                 if (cred->key_idx > NUM_WEP_KEYS) {
 279                         wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key index %d",
 280                                    cred->key_idx);
 281                         return -1;
 282                 }
 283                 if (cred->key_idx)
 284                         key_idx = cred->key_idx - 1;
 285                 if (cred->key_len == 10 || cred->key_len == 26) {
 286                         if (hexstr2bin((char *) cred->key,
 287                                        ssid->wep_key[key_idx],
 288                                        cred->key_len / 2) < 0) {
 289                                 wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key "
 290                                            "%d", key_idx);
 291                                 return -1;
 292                         }
 293                         ssid->wep_key_len[key_idx] = cred->key_len / 2;
 294                 } else {
 295                         os_memcpy(ssid->wep_key[key_idx], cred->key,
 296                                   cred->key_len);
 297                         ssid->wep_key_len[key_idx] = cred->key_len;
 298                 }
 299                 ssid->wep_tx_keyidx = key_idx;
 300                 break;
 301         case WPS_ENCR_TKIP:
 302                 ssid->pairwise_cipher = WPA_CIPHER_TKIP;
 303                 break;
 304         case WPS_ENCR_AES:
 305                 ssid->pairwise_cipher = WPA_CIPHER_CCMP;
 306                 break;
 307         }
 308
 309         switch (auth_type) {
 310         case WPS_AUTH_OPEN:
 311                 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 312                 ssid->key_mgmt = WPA_KEY_MGMT_NONE;
 313                 ssid->proto = 0;
 314                 break;
 315         case WPS_AUTH_SHARED:
 316                 ssid->auth_alg = WPA_AUTH_ALG_SHARED;
 317                 ssid->key_mgmt = WPA_KEY_MGMT_NONE;
 318                 ssid->proto = 0;
 319                 break;
 320         case WPS_AUTH_WPAPSK:
 321                 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 322                 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
 323                 ssid->proto = WPA_PROTO_WPA;
 324                 break;
 325         case WPS_AUTH_WPA:
 326                 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 327                 ssid->key_mgmt = WPA_KEY_MGMT_IEEE8021X;
 328                 ssid->proto = WPA_PROTO_WPA;
 329                 break;
 330         case WPS_AUTH_WPA2:
 331                 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 332                 ssid->key_mgmt = WPA_KEY_MGMT_IEEE8021X;
 333                 ssid->proto = WPA_PROTO_RSN;
 334                 break;
 335         case WPS_AUTH_WPA2PSK:
 336                 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 337                 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
 338                 ssid->proto = WPA_PROTO_RSN;
 339                 break;
 340         }
 341
 342         if (ssid->key_mgmt == WPA_KEY_MGMT_PSK) {
 343                 if (cred->key_len == 2 * PMK_LEN) {
 344                         if (hexstr2bin((const char *) cred->key, ssid->psk,
 345                                        PMK_LEN)) {
 346                                 wpa_printf(MSG_ERROR, "WPS: Invalid Network "
 347                                            "Key");
 348                                 return -1;
 349                         }
 350                         ssid->psk_set = 1;
 351                 } else if (cred->key_len >= 8 && cred->key_len < 2 * PMK_LEN) {
 352                         os_free(ssid->passphrase);
 353                         ssid->passphrase = os_malloc(cred->key_len + 1);
 354                         if (ssid->passphrase == NULL)
 355                                 return -1;
 356                         os_memcpy(ssid->passphrase, cred->key, cred->key_len);
 357                         ssid->passphrase[cred->key_len] = '\0';
 358                         wpa_config_update_psk(ssid);
 359                 } else {
 360                         wpa_printf(MSG_ERROR, "WPS: Invalid Network Key "
 361                                    "length %lu",
 362                                    (unsigned long) cred->key_len);
 363                         return -1;
 364                 }
 365         }
 366
 367         wpas_wps_security_workaround(wpa_s, ssid, cred);
 368
 369 #ifndef CONFIG_NO_CONFIG_WRITE
 370         if (wpa_s->conf->update_config &&
 371             wpa_config_write(wpa_s->confname, wpa_s->conf)) {
 372                 wpa_printf(MSG_DEBUG, "WPS: Failed to update configuration");
 373                 return -1;
 374         }
 375 #endif /* CONFIG_NO_CONFIG_WRITE */
 376
 377         return 0;
 378 }
 379
 380
 381 static void wpa_supplicant_wps_event_m2d(struct wpa_supplicant *wpa_s,
 382                                          struct wps_event_m2d *m2d)
 383 {
 384         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_M2D
 385                 "dev_password_id=%d config_error=%d",
 386                 m2d->dev_password_id, m2d->config_error);
 387         wpas_notify_wps_event_m2d(wpa_s, m2d);
 388 }
 389
 390
 391 static void wpa_supplicant_wps_event_fail(struct wpa_supplicant *wpa_s,
 392                                           struct wps_event_fail *fail)
 393 {
 394         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_FAIL "msg=%d config_error=%d",
 395                 fail->msg, fail->config_error);
 396         if (wpa_s->parent && wpa_s->parent != wpa_s)
 397                 wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_FAIL
 398                         "msg=%d config_error=%d",
 399                         fail->msg, fail->config_error);
 400         wpas_clear_wps(wpa_s);
 401         wpas_notify_wps_event_fail(wpa_s, fail);
 402 }
 403
 404
 405 static void wpa_supplicant_wps_event_success(struct wpa_supplicant *wpa_s)
 406 {
 407         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_SUCCESS);
 408         wpa_s->wps_success = 1;
 409         wpas_notify_wps_event_success(wpa_s);
 410 #ifdef CONFIG_P2P
 411         wpas_p2p_wps_success(wpa_s, wpa_s->bssid, 0);
 412 #endif /* CONFIG_P2P */
 413 }
 414
 415
 416 static void wpa_supplicant_wps_event_er_ap_add(struct wpa_supplicant *wpa_s,
 417                                                struct wps_event_er_ap *ap)
 418 {
 419         char uuid_str[100];
 420         char dev_type[WPS_DEV_TYPE_BUFSIZE];
 421
 422         uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str));
 423         if (ap->pri_dev_type)
 424                 wps_dev_type_bin2str(ap->pri_dev_type, dev_type,
 425                                      sizeof(dev_type));
 426         else
 427                 dev_type[0] = '\0';
 428
 429         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_ADD "%s " MACSTR
 430                 " pri_dev_type=%s wps_state=%d |%s|%s|%s|%s|%s|%s|",
 431                 uuid_str, MAC2STR(ap->mac_addr), dev_type, ap->wps_state,
 432                 ap->friendly_name ? ap->friendly_name : "",
 433                 ap->manufacturer ? ap->manufacturer : "",
 434                 ap->model_description ? ap->model_description : "",
 435                 ap->model_name ? ap->model_name : "",
 436                 ap->manufacturer_url ? ap->manufacturer_url : "",
 437                 ap->model_url ? ap->model_url : "");
 438 }
 439
 440
 441 static void wpa_supplicant_wps_event_er_ap_remove(struct wpa_supplicant *wpa_s,
 442                                                   struct wps_event_er_ap *ap)
 443 {
 444         char uuid_str[100];
 445         uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str));
 446         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_REMOVE "%s", uuid_str);
 447 }
 448
 449
 450 static void wpa_supplicant_wps_event_er_enrollee_add(
 451         struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee)
 452 {
 453         char uuid_str[100];
 454         char dev_type[WPS_DEV_TYPE_BUFSIZE];
 455
 456         uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str));
 457         if (enrollee->pri_dev_type)
 458                 wps_dev_type_bin2str(enrollee->pri_dev_type, dev_type,
 459                                      sizeof(dev_type));
 460         else
 461                 dev_type[0] = '\0';
 462
 463         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_ADD "%s " MACSTR
 464                 " M1=%d config_methods=0x%x dev_passwd_id=%d pri_dev_type=%s "
 465                 "|%s|%s|%s|%s|%s|",
 466                 uuid_str, MAC2STR(enrollee->mac_addr), enrollee->m1_received,
 467                 enrollee->config_methods, enrollee->dev_passwd_id, dev_type,
 468                 enrollee->dev_name ? enrollee->dev_name : "",
 469                 enrollee->manufacturer ? enrollee->manufacturer : "",
 470                 enrollee->model_name ? enrollee->model_name : "",
 471                 enrollee->model_number ? enrollee->model_number : "",
 472                 enrollee->serial_number ? enrollee->serial_number : "");
 473 }
 474
 475
 476 static void wpa_supplicant_wps_event_er_enrollee_remove(
 477         struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee)
 478 {
 479         char uuid_str[100];
 480         uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str));
 481         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_REMOVE "%s " MACSTR,
 482                 uuid_str, MAC2STR(enrollee->mac_addr));
 483 }
 484
 485
 486 static void wpa_supplicant_wps_event_er_ap_settings(
 487         struct wpa_supplicant *wpa_s,
 488         struct wps_event_er_ap_settings *ap_settings)
 489 {
 490         char uuid_str[100];
 491         char key_str[65];
 492         const struct wps_credential *cred = ap_settings->cred;
 493
 494         key_str[0] = '\0';
 495         if (cred->auth_type & (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) {
 496                 if (cred->key_len >= 8 && cred->key_len <= 64) {
 497                         os_memcpy(key_str, cred->key, cred->key_len);
 498                         key_str[cred->key_len] = '\0';
 499                 }
 500         }
 501
 502         uuid_bin2str(ap_settings->uuid, uuid_str, sizeof(uuid_str));
 503         /* Use wpa_msg_ctrl to avoid showing the key in debug log */
 504         wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_SETTINGS
 505                      "uuid=%s ssid=%s auth_type=0x%04x encr_type=0x%04x "
 506                      "key=%s",
 507                      uuid_str, wpa_ssid_txt(cred->ssid, cred->ssid_len),
 508                      cred->auth_type, cred->encr_type, key_str);
 509 }
 510
 511
 512 static void wpa_supplicant_wps_event_er_set_sel_reg(
 513         struct wpa_supplicant *wpa_s,
 514         struct wps_event_er_set_selected_registrar *ev)
 515 {
 516         char uuid_str[100];
 517
 518         uuid_bin2str(ev->uuid, uuid_str, sizeof(uuid_str));
 519         switch (ev->state) {
 520         case WPS_ER_SET_SEL_REG_START:
 521                 wpa_msg(wpa_s, MSG_DEBUG, WPS_EVENT_ER_SET_SEL_REG
 522                         "uuid=%s state=START sel_reg=%d dev_passwd_id=%u "
 523                         "sel_reg_config_methods=0x%x",
 524                         uuid_str, ev->sel_reg, ev->dev_passwd_id,
 525                         ev->sel_reg_config_methods);
 526                 break;
 527         case WPS_ER_SET_SEL_REG_DONE:
 528                 wpa_msg(wpa_s, MSG_DEBUG, WPS_EVENT_ER_SET_SEL_REG
 529                         "uuid=%s state=DONE", uuid_str);
 530                 break;
 531         case WPS_ER_SET_SEL_REG_FAILED:
 532                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_SET_SEL_REG
 533                         "uuid=%s state=FAILED", uuid_str);
 534                 break;
 535         }
 536 }
 537
 538
 539 static void wpa_supplicant_wps_event(void *ctx, enum wps_event event,
 540                                      union wps_event_data *data)
 541 {
 542         struct wpa_supplicant *wpa_s = ctx;
 543         switch (event) {
 544         case WPS_EV_M2D:
 545                 wpa_supplicant_wps_event_m2d(wpa_s, &data->m2d);
 546                 break;
 547         case WPS_EV_FAIL:
 548                 wpa_supplicant_wps_event_fail(wpa_s, &data->fail);
 549                 break;
 550         case WPS_EV_SUCCESS:
 551                 wpa_supplicant_wps_event_success(wpa_s);
 552                 break;
 553         case WPS_EV_PWD_AUTH_FAIL:
 554 #ifdef CONFIG_AP
 555                 if (wpa_s->ap_iface && data->pwd_auth_fail.enrollee)
 556                         wpa_supplicant_ap_pwd_auth_fail(wpa_s);
 557 #endif /* CONFIG_AP */
 558                 break;
 559         case WPS_EV_PBC_OVERLAP:
 560                 break;
 561         case WPS_EV_PBC_TIMEOUT:
 562                 break;
 563         case WPS_EV_ER_AP_ADD:
 564                 wpa_supplicant_wps_event_er_ap_add(wpa_s, &data->ap);
 565                 break;
 566         case WPS_EV_ER_AP_REMOVE:
 567                 wpa_supplicant_wps_event_er_ap_remove(wpa_s, &data->ap);
 568                 break;
 569         case WPS_EV_ER_ENROLLEE_ADD:
 570                 wpa_supplicant_wps_event_er_enrollee_add(wpa_s,
 571                                                          &data->enrollee);
 572                 break;
 573         case WPS_EV_ER_ENROLLEE_REMOVE:
 574                 wpa_supplicant_wps_event_er_enrollee_remove(wpa_s,
 575                                                             &data->enrollee);
 576                 break;
 577         case WPS_EV_ER_AP_SETTINGS:
 578                 wpa_supplicant_wps_event_er_ap_settings(wpa_s,
 579                                                         &data->ap_settings);
 580                 break;
 581         case WPS_EV_ER_SET_SELECTED_REGISTRAR:
 582                 wpa_supplicant_wps_event_er_set_sel_reg(wpa_s,
 583                                                         &data->set_sel_reg);
 584                 break;
 585         }
 586 }
 587
 588
 589 enum wps_request_type wpas_wps_get_req_type(struct wpa_ssid *ssid)
 590 {
 591         if (eap_is_wps_pbc_enrollee(&ssid->eap) ||
 592             eap_is_wps_pin_enrollee(&ssid->eap))
 593                 return WPS_REQ_ENROLLEE;
 594         else
 595                 return WPS_REQ_REGISTRAR;
 596 }
 597
 598
 599 static void wpas_clear_wps(struct wpa_supplicant *wpa_s)
 600 {
 601         int id;
 602         struct wpa_ssid *ssid, *remove_ssid = NULL;
 603
 604         eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
 605
 606         /* Remove any existing WPS network from configuration */
 607         ssid = wpa_s->conf->ssid;
 608         while (ssid) {
 609                 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
 610                         if (ssid == wpa_s->current_ssid) {
 611                                 wpa_s->current_ssid = NULL;
 612                                 if (ssid != NULL)
 613                                         wpas_notify_network_changed(wpa_s);
 614                         }
 615                         id = ssid->id;
 616                         remove_ssid = ssid;
 617                 } else
 618                         id = -1;
 619                 ssid = ssid->next;
 620                 if (id >= 0) {
 621                         wpas_notify_network_removed(wpa_s, remove_ssid);
 622                         wpa_config_remove_network(wpa_s->conf, id);
 623                 }
 624         }
 625 }
 626
 627
 628 static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx)
 629 {
 630         struct wpa_supplicant *wpa_s = eloop_ctx;
 631         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_TIMEOUT "Requested operation timed "
 632                 "out");
 633         wpas_clear_wps(wpa_s);
 634 }
 635
 636
 637 static struct wpa_ssid * wpas_wps_add_network(struct wpa_supplicant *wpa_s,
 638                                               int registrar, const u8 *bssid)
 639 {
 640         struct wpa_ssid *ssid;
 641
 642         ssid = wpa_config_add_network(wpa_s->conf);
 643         if (ssid == NULL)
 644                 return NULL;
 645         wpas_notify_network_added(wpa_s, ssid);
 646         wpa_config_set_network_defaults(ssid);
 647         ssid->temporary = 1;
 648         if (wpa_config_set(ssid, "key_mgmt", "WPS", 0) < 0 ||
 649             wpa_config_set(ssid, "eap", "WSC", 0) < 0 ||
 650             wpa_config_set(ssid, "identity", registrar ?
 651                            "\"" WSC_ID_REGISTRAR "\"" :
 652                            "\"" WSC_ID_ENROLLEE "\"", 0) < 0) {
 653                 wpas_notify_network_removed(wpa_s, ssid);
 654                 wpa_config_remove_network(wpa_s->conf, ssid->id);
 655                 return NULL;
 656         }
 657
 658         if (bssid) {
 659 #ifndef CONFIG_P2P
 660                 struct wpa_bss *bss;
 661                 int count = 0;
 662 #endif /* CONFIG_P2P */
 663
 664                 os_memcpy(ssid->bssid, bssid, ETH_ALEN);
 665                 ssid->bssid_set = 1;
 666
 667                 /*
 668                  * Note: With P2P, the SSID may change at the time the WPS
 669                  * provisioning is started, so better not filter the AP based
 670                  * on the current SSID in the scan results.
 671                  */
 672 #ifndef CONFIG_P2P
 673                 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
 674                         if (os_memcmp(bssid, bss->bssid, ETH_ALEN) != 0)
 675                                 continue;
 676
 677                         os_free(ssid->ssid);
 678                         ssid->ssid = os_malloc(bss->ssid_len);
 679                         if (ssid->ssid == NULL)
 680                                 break;
 681                         os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
 682                         ssid->ssid_len = bss->ssid_len;
 683                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Picked SSID from "
 684                                           "scan results",
 685                                           ssid->ssid, ssid->ssid_len);
 686                         count++;
 687                 }
 688
 689                 if (count > 1) {
 690                         wpa_printf(MSG_DEBUG, "WPS: More than one SSID found "
 691                                    "for the AP; use wildcard");
 692                         os_free(ssid->ssid);
 693                         ssid->ssid = NULL;
 694                         ssid->ssid_len = 0;
 695                 }
 696 #endif /* CONFIG_P2P */
 697         }
 698
 699         return ssid;
 700 }
 701
 702
 703 static void wpas_wps_reassoc(struct wpa_supplicant *wpa_s,
 704                              struct wpa_ssid *selected)
 705 {
 706         struct wpa_ssid *ssid;
 707
 708         /* Mark all other networks disabled and trigger reassociation */
 709         ssid = wpa_s->conf->ssid;
 710         while (ssid) {
 711                 int was_disabled = ssid->disabled;
 712                 ssid->disabled = ssid != selected;
 713                 if (was_disabled != ssid->disabled)
 714                         wpas_notify_network_enabled_changed(wpa_s, ssid);
 715                 ssid = ssid->next;
 716         }
 717         wpa_s->disconnected = 0;
 718         wpa_s->reassociate = 1;
 719         wpa_s->scan_runs = 0;
 720         wpa_s->wps_success = 0;
 721         wpa_s->blacklist_cleared = 0;
 722         wpa_supplicant_req_scan(wpa_s, 0, 0);
 723 }
 724
 725
 726 int wpas_wps_start_pbc(struct wpa_supplicant *wpa_s, const u8 *bssid,
 727                        int p2p_group)
 728 {
 729         struct wpa_ssid *ssid;
 730         wpas_clear_wps(wpa_s);
 731         ssid = wpas_wps_add_network(wpa_s, 0, bssid);
 732         if (ssid == NULL)
 733                 return -1;
 734         ssid->temporary = 1;
 735         ssid->p2p_group = p2p_group;
 736 #ifdef CONFIG_P2P
 737         if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) {
 738                 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1);
 739                 if (ssid->ssid) {
 740                         ssid->ssid_len = wpa_s->go_params->ssid_len;
 741                         os_memcpy(ssid->ssid, wpa_s->go_params->ssid,
 742                                   ssid->ssid_len);
 743                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP "
 744                                           "SSID", ssid->ssid, ssid->ssid_len);
 745                 }
 746         }
 747 #endif /* CONFIG_P2P */
 748         wpa_config_set(ssid, "phase1", "\"pbc=1\"", 0);
 749         if (wpa_s->wps_fragment_size)
 750                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
 751         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
 752                                wpa_s, NULL);
 753         wpas_wps_reassoc(wpa_s, ssid);
 754         return 0;
 755 }
 756
 757
 758 int wpas_wps_start_pin(struct wpa_supplicant *wpa_s, const u8 *bssid,
 759                        const char *pin, int p2p_group, u16 dev_pw_id)
 760 {
 761         struct wpa_ssid *ssid;
 762         char val[128];
 763         unsigned int rpin = 0;
 764
 765         wpas_clear_wps(wpa_s);
 766         ssid = wpas_wps_add_network(wpa_s, 0, bssid);
 767         if (ssid == NULL)
 768                 return -1;
 769         ssid->temporary = 1;
 770         ssid->p2p_group = p2p_group;
 771 #ifdef CONFIG_P2P
 772         if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) {
 773                 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1);
 774                 if (ssid->ssid) {
 775                         ssid->ssid_len = wpa_s->go_params->ssid_len;
 776                         os_memcpy(ssid->ssid, wpa_s->go_params->ssid,
 777                                   ssid->ssid_len);
 778                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP "
 779                                           "SSID", ssid->ssid, ssid->ssid_len);
 780                 }
 781         }
 782 #endif /* CONFIG_P2P */
 783         if (pin)
 784                 os_snprintf(val, sizeof(val), "\"pin=%s dev_pw_id=%u\"",
 785                             pin, dev_pw_id);
 786         else {
 787                 rpin = wps_generate_pin();
 788                 os_snprintf(val, sizeof(val), "\"pin=%08d dev_pw_id=%u\"",
 789                             rpin, dev_pw_id);
 790         }
 791         wpa_config_set(ssid, "phase1", val, 0);
 792         if (wpa_s->wps_fragment_size)
 793                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
 794         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
 795                                wpa_s, NULL);
 796         wpas_wps_reassoc(wpa_s, ssid);
 797         return rpin;
 798 }
 799
 800
 801 /* Cancel the wps pbc/pin requests */
 802 int wpas_wps_cancel(struct wpa_supplicant *wpa_s)
 803 {
 804 #ifdef CONFIG_AP
 805         if (wpa_s->ap_iface) {
 806                 wpa_printf(MSG_DEBUG, "WPS: Cancelling in AP mode");
 807                 return wpa_supplicant_ap_wps_cancel(wpa_s);
 808         }
 809 #endif /* CONFIG_AP */
 810
 811         if (wpa_s->wpa_state == WPA_SCANNING) {
 812                 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - cancel scan");
 813                 wpa_supplicant_cancel_scan(wpa_s);
 814                 wpas_clear_wps(wpa_s);
 815         } else if (wpa_s->wpa_state >= WPA_ASSOCIATED) {
 816                 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - "
 817                            "deauthenticate");
 818                 wpa_supplicant_deauthenticate(wpa_s,
 819                                               WLAN_REASON_DEAUTH_LEAVING);
 820                 wpas_clear_wps(wpa_s);
 821         }
 822
 823         return 0;
 824 }
 825
 826
 827 #ifdef CONFIG_WPS_OOB
 828 int wpas_wps_start_oob(struct wpa_supplicant *wpa_s, char *device_type,
 829                        char *path, char *method, char *name)
 830 {
 831         struct wps_context *wps = wpa_s->wps;
 832         struct oob_device_data *oob_dev;
 833
 834         oob_dev = wps_get_oob_device(device_type);
 835         if (oob_dev == NULL)
 836                 return -1;
 837         oob_dev->device_path = path;
 838         oob_dev->device_name = name;
 839         wps->oob_conf.oob_method = wps_get_oob_method(method);
 840
 841         if (wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_E) {
 842                 /*
 843                  * Use pre-configured DH keys in order to be able to write the
 844                  * key hash into the OOB file.
 845                  */
 846                 wpabuf_free(wps->dh_pubkey);
 847                 wpabuf_free(wps->dh_privkey);
 848                 wps->dh_privkey = NULL;
 849                 wps->dh_pubkey = NULL;
 850                 dh5_free(wps->dh_ctx);
 851                 wps->dh_ctx = dh5_init(&wps->dh_privkey, &wps->dh_pubkey);
 852                 wps->dh_pubkey = wpabuf_zeropad(wps->dh_pubkey, 192);
 853                 if (wps->dh_ctx == NULL || wps->dh_pubkey == NULL) {
 854                         wpa_printf(MSG_ERROR, "WPS: Failed to initialize "
 855                                    "Diffie-Hellman handshake");
 856                         return -1;
 857                 }
 858         }
 859
 860         if (wps->oob_conf.oob_method == OOB_METHOD_CRED)
 861                 wpas_clear_wps(wpa_s);
 862
 863         if (wps_process_oob(wps, oob_dev, 0) < 0)
 864                 return -1;
 865
 866         if ((wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_E ||
 867              wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_R) &&
 868             wpas_wps_start_pin(wpa_s, NULL,
 869                                wpabuf_head(wps->oob_conf.dev_password), 0,
 870                                DEV_PW_DEFAULT) < 0)
 871                         return -1;
 872
 873         return 0;
 874 }
 875 #endif /* CONFIG_WPS_OOB */
 876
 877
 878 int wpas_wps_start_reg(struct wpa_supplicant *wpa_s, const u8 *bssid,
 879                        const char *pin, struct wps_new_ap_settings *settings)
 880 {
 881         struct wpa_ssid *ssid;
 882         char val[200];
 883         char *pos, *end;
 884         int res;
 885
 886         if (!pin)
 887                 return -1;
 888         wpas_clear_wps(wpa_s);
 889         ssid = wpas_wps_add_network(wpa_s, 1, bssid);
 890         if (ssid == NULL)
 891                 return -1;
 892         ssid->temporary = 1;
 893         pos = val;
 894         end = pos + sizeof(val);
 895         res = os_snprintf(pos, end - pos, "\"pin=%s", pin);
 896         if (res < 0 || res >= end - pos)
 897                 return -1;
 898         pos += res;
 899         if (settings) {
 900                 res = os_snprintf(pos, end - pos, " new_ssid=%s new_auth=%s "
 901                                   "new_encr=%s new_key=%s",
 902                                   settings->ssid_hex, settings->auth,
 903                                   settings->encr, settings->key_hex);
 904                 if (res < 0 || res >= end - pos)
 905                         return -1;
 906                 pos += res;
 907         }
 908         res = os_snprintf(pos, end - pos, "\"");
 909         if (res < 0 || res >= end - pos)
 910                 return -1;
 911         wpa_config_set(ssid, "phase1", val, 0);
 912         if (wpa_s->wps_fragment_size)
 913                 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
 914         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
 915                                wpa_s, NULL);
 916         wpas_wps_reassoc(wpa_s, ssid);
 917         return 0;
 918 }
 919
 920
 921 static int wpas_wps_new_psk_cb(void *ctx, const u8 *mac_addr, const u8 *psk,
 922                                size_t psk_len)
 923 {
 924         wpa_printf(MSG_DEBUG, "WPS: Received new WPA/WPA2-PSK from WPS for "
 925                    "STA " MACSTR, MAC2STR(mac_addr));
 926         wpa_hexdump_key(MSG_DEBUG, "Per-device PSK", psk, psk_len);
 927
 928         /* TODO */
 929
 930         return 0;
 931 }
 932
 933
 934 static void wpas_wps_pin_needed_cb(void *ctx, const u8 *uuid_e,
 935                                    const struct wps_device_data *dev)
 936 {
 937         char uuid[40], txt[400];
 938         int len;
 939         char devtype[WPS_DEV_TYPE_BUFSIZE];
 940         if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
 941                 return;
 942         wpa_printf(MSG_DEBUG, "WPS: PIN needed for UUID-E %s", uuid);
 943         len = os_snprintf(txt, sizeof(txt), "WPS-EVENT-PIN-NEEDED %s " MACSTR
 944                           " [%s|%s|%s|%s|%s|%s]",
 945                           uuid, MAC2STR(dev->mac_addr), dev->device_name,
 946                           dev->manufacturer, dev->model_name,
 947                           dev->model_number, dev->serial_number,
 948                           wps_dev_type_bin2str(dev->pri_dev_type, devtype,
 949                                                sizeof(devtype)));
 950         if (len > 0 && len < (int) sizeof(txt))
 951                 wpa_printf(MSG_INFO, "%s", txt);
 952 }
 953
 954
 955 static void wpas_wps_set_sel_reg_cb(void *ctx, int sel_reg, u16 dev_passwd_id,
 956                                     u16 sel_reg_config_methods)
 957 {
 958 #ifdef CONFIG_WPS_ER
 959         struct wpa_supplicant *wpa_s = ctx;
 960
 961         if (wpa_s->wps_er == NULL)
 962                 return;
 963         wpa_printf(MSG_DEBUG, "WPS ER: SetSelectedRegistrar - sel_reg=%d "
 964                    "dev_password_id=%u sel_reg_config_methods=0x%x",
 965                    sel_reg, dev_passwd_id, sel_reg_config_methods);
 966         wps_er_set_sel_reg(wpa_s->wps_er, sel_reg, dev_passwd_id,
 967                            sel_reg_config_methods);
 968 #endif /* CONFIG_WPS_ER */
 969 }
 970
 971
 972 static u16 wps_fix_config_methods(u16 config_methods)
 973 {
 974 #ifdef CONFIG_WPS2
 975         if ((config_methods &
 976              (WPS_CONFIG_DISPLAY | WPS_CONFIG_VIRT_DISPLAY |
 977               WPS_CONFIG_PHY_DISPLAY)) == WPS_CONFIG_DISPLAY) {
 978                 wpa_printf(MSG_INFO, "WPS: Converting display to "
 979                            "virtual_display for WPS 2.0 compliance");
 980                 config_methods |= WPS_CONFIG_VIRT_DISPLAY;
 981         }
 982         if ((config_methods &
 983              (WPS_CONFIG_PUSHBUTTON | WPS_CONFIG_VIRT_PUSHBUTTON |
 984               WPS_CONFIG_PHY_PUSHBUTTON)) == WPS_CONFIG_PUSHBUTTON) {
 985                 wpa_printf(MSG_INFO, "WPS: Converting push_button to "
 986                            "virtual_push_button for WPS 2.0 compliance");
 987                 config_methods |= WPS_CONFIG_VIRT_PUSHBUTTON;
 988         }
 989 #endif /* CONFIG_WPS2 */
 990
 991         return config_methods;
 992 }
 993
 994
 995 int wpas_wps_init(struct wpa_supplicant *wpa_s)
 996 {
 997         struct wps_context *wps;
 998         struct wps_registrar_config rcfg;
 999
1000         wps = os_zalloc(sizeof(*wps));
1001         if (wps == NULL)
1002                 return -1;
1003
1004         wps->cred_cb = wpa_supplicant_wps_cred;
1005         wps->event_cb = wpa_supplicant_wps_event;
1006         wps->cb_ctx = wpa_s;
1007
1008         wps->dev.device_name = wpa_s->conf->device_name;
1009         wps->dev.manufacturer = wpa_s->conf->manufacturer;
1010         wps->dev.model_name = wpa_s->conf->model_name;
1011         wps->dev.model_number = wpa_s->conf->model_number;
1012         wps->dev.serial_number = wpa_s->conf->serial_number;
1013         wps->config_methods =
1014                 wps_config_methods_str2bin(wpa_s->conf->config_methods);
1015         if ((wps->config_methods & (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) ==
1016             (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
1017                 wpa_printf(MSG_ERROR, "WPS: Both Label and Display config "
1018                            "methods are not allowed at the same time");
1019                 os_free(wps);
1020                 return -1;
1021         }
1022         wps->config_methods = wps_fix_config_methods(wps->config_methods);
1023         if (wpa_s->conf->device_type &&
1024             wps_dev_type_str2bin(wpa_s->conf->device_type,
1025                                  wps->dev.pri_dev_type) < 0) {
1026                 wpa_printf(MSG_ERROR, "WPS: Invalid device_type");
1027                 os_free(wps);
1028                 return -1;
1029         }
1030         wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
1031         wps->dev.rf_bands = WPS_RF_24GHZ | WPS_RF_50GHZ; /* TODO: config */
1032         os_memcpy(wps->dev.mac_addr, wpa_s->own_addr, ETH_ALEN);
1033         if (is_nil_uuid(wpa_s->conf->uuid)) {
1034                 uuid_gen_mac_addr(wpa_s->own_addr, wps->uuid);
1035                 wpa_hexdump(MSG_DEBUG, "WPS: UUID based on MAC address",
1036                             wps->uuid, WPS_UUID_LEN);
1037         } else
1038                 os_memcpy(wps->uuid, wpa_s->conf->uuid, WPS_UUID_LEN);
1039
1040         wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK;
1041         wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP;
1042
1043         os_memset(&rcfg, 0, sizeof(rcfg));
1044         rcfg.new_psk_cb = wpas_wps_new_psk_cb;
1045         rcfg.pin_needed_cb = wpas_wps_pin_needed_cb;
1046         rcfg.set_sel_reg_cb = wpas_wps_set_sel_reg_cb;
1047         rcfg.cb_ctx = wpa_s;
1048
1049         wps->registrar = wps_registrar_init(wps, &rcfg);
1050         if (wps->registrar == NULL) {
1051                 wpa_printf(MSG_DEBUG, "Failed to initialize WPS Registrar");
1052                 os_free(wps);
1053                 return -1;
1054         }
1055
1056         wpa_s->wps = wps;
1057
1058         return 0;
1059 }
1060
1061
1062 void wpas_wps_deinit(struct wpa_supplicant *wpa_s)
1063 {
1064         eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
1065
1066         if (wpa_s->wps == NULL)
1067                 return;
1068
1069 #ifdef CONFIG_WPS_ER
1070         wps_er_deinit(wpa_s->wps_er, NULL, NULL);
1071         wpa_s->wps_er = NULL;
1072 #endif /* CONFIG_WPS_ER */
1073
1074         wps_registrar_deinit(wpa_s->wps->registrar);
1075         wpabuf_free(wpa_s->wps->dh_pubkey);
1076         wpabuf_free(wpa_s->wps->dh_privkey);
1077         wpabuf_free(wpa_s->wps->oob_conf.pubkey_hash);
1078         wpabuf_free(wpa_s->wps->oob_conf.dev_password);
1079         os_free(wpa_s->wps->network_key);
1080         os_free(wpa_s->wps);
1081         wpa_s->wps = NULL;
1082 }
1083
1084
1085 int wpas_wps_ssid_bss_match(struct wpa_supplicant *wpa_s,
1086                             struct wpa_ssid *ssid, struct wpa_scan_res *bss)
1087 {
1088         struct wpabuf *wps_ie;
1089
1090         if (!(ssid->key_mgmt & WPA_KEY_MGMT_WPS))
1091                 return -1;
1092
1093         wps_ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1094         if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
1095                 if (!wps_ie) {
1096                         wpa_printf(MSG_DEBUG, "   skip - non-WPS AP");
1097                         return 0;
1098                 }
1099
1100                 if (!wps_is_selected_pbc_registrar(wps_ie)) {
1101                         wpa_printf(MSG_DEBUG, "   skip - WPS AP "
1102                                    "without active PBC Registrar");
1103                         wpabuf_free(wps_ie);
1104                         return 0;
1105                 }
1106
1107                 /* TODO: overlap detection */
1108                 wpa_printf(MSG_DEBUG, "   selected based on WPS IE "
1109                            "(Active PBC)");
1110                 wpabuf_free(wps_ie);
1111                 return 1;
1112         }
1113
1114         if (eap_is_wps_pin_enrollee(&ssid->eap)) {
1115                 if (!wps_ie) {
1116                         wpa_printf(MSG_DEBUG, "   skip - non-WPS AP");
1117                         return 0;
1118                 }
1119
1120                 /*
1121                  * Start with WPS APs that advertise our address as an
1122                  * authorized MAC (v2.0) or active PIN Registrar (v1.0) and
1123                  * allow any WPS AP after couple of scans since some APs do not
1124                  * set Selected Registrar attribute properly when using
1125                  * external Registrar.
1126                  */
1127                 if (!wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1)) {
1128                         if (wpa_s->scan_runs < WPS_PIN_SCAN_IGNORE_SEL_REG) {
1129                                 wpa_printf(MSG_DEBUG, "   skip - WPS AP "
1130                                            "without active PIN Registrar");
1131                                 wpabuf_free(wps_ie);
1132                                 return 0;
1133                         }
1134                         wpa_printf(MSG_DEBUG, "   selected based on WPS IE");
1135                 } else {
1136                         wpa_printf(MSG_DEBUG, "   selected based on WPS IE "
1137                                    "(Authorized MAC or Active PIN)");
1138                 }
1139                 wpabuf_free(wps_ie);
1140                 return 1;
1141         }
1142
1143         if (wps_ie) {
1144                 wpa_printf(MSG_DEBUG, "   selected based on WPS IE");
1145                 wpabuf_free(wps_ie);
1146                 return 1;
1147         }
1148
1149         return -1;
1150 }
1151
1152
1153 int wpas_wps_ssid_wildcard_ok(struct wpa_supplicant *wpa_s,
1154                               struct wpa_ssid *ssid,
1155                               struct wpa_scan_res *bss)
1156 {
1157         struct wpabuf *wps_ie = NULL;
1158         int ret = 0;
1159
1160         if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
1161                 wps_ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1162                 if (wps_ie && wps_is_selected_pbc_registrar(wps_ie)) {
1163                         /* allow wildcard SSID for WPS PBC */
1164                         ret = 1;
1165                 }
1166         } else if (eap_is_wps_pin_enrollee(&ssid->eap)) {
1167                 wps_ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1168                 if (wps_ie &&
1169                     (wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1) ||
1170                      wpa_s->scan_runs >= WPS_PIN_SCAN_IGNORE_SEL_REG)) {
1171                         /* allow wildcard SSID for WPS PIN */
1172                         ret = 1;
1173                 }
1174         }
1175
1176         if (!ret && ssid->bssid_set &&
1177             os_memcmp(ssid->bssid, bss->bssid, ETH_ALEN) == 0) {
1178                 /* allow wildcard SSID due to hardcoded BSSID match */
1179                 ret = 1;
1180         }
1181
1182 #ifdef CONFIG_WPS_STRICT
1183         if (wps_ie) {
1184                 if (wps_validate_beacon_probe_resp(wps_ie, bss->beacon_ie_len >
1185                                                    0, bss->bssid) < 0)
1186                         ret = 0;
1187                 if (bss->beacon_ie_len) {
1188                         struct wpabuf *bcn_wps;
1189                         bcn_wps = wpa_scan_get_vendor_ie_multi_beacon(
1190                                 bss, WPS_IE_VENDOR_TYPE);
1191                         if (bcn_wps == NULL) {
1192                                 wpa_printf(MSG_DEBUG, "WPS: Mandatory WPS IE "
1193                                            "missing from AP Beacon");
1194                                 ret = 0;
1195                         } else {
1196                                 if (wps_validate_beacon(wps_ie) < 0)
1197                                         ret = 0;
1198                                 wpabuf_free(bcn_wps);
1199                         }
1200                 }
1201         }
1202 #endif /* CONFIG_WPS_STRICT */
1203
1204         wpabuf_free(wps_ie);
1205
1206         return ret;
1207 }
1208
1209
1210 int wpas_wps_scan_pbc_overlap(struct wpa_supplicant *wpa_s,
1211                               struct wpa_bss *selected, struct wpa_ssid *ssid)
1212 {
1213         const u8 *sel_uuid, *uuid;
1214         struct wpabuf *wps_ie;
1215         int ret = 0;
1216         struct wpa_bss *bss;
1217
1218         if (!eap_is_wps_pbc_enrollee(&ssid->eap))
1219                 return 0;
1220
1221         wpa_printf(MSG_DEBUG, "WPS: Check whether PBC session overlap is "
1222                    "present in scan results; selected BSSID " MACSTR,
1223                    MAC2STR(selected->bssid));
1224
1225         /* Make sure that only one AP is in active PBC mode */
1226         wps_ie = wpa_bss_get_vendor_ie_multi(selected, WPS_IE_VENDOR_TYPE);
1227         if (wps_ie) {
1228                 sel_uuid = wps_get_uuid_e(wps_ie);
1229                 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the selected BSS",
1230                             sel_uuid, UUID_LEN);
1231         } else {
1232                 wpa_printf(MSG_DEBUG, "WPS: Selected BSS does not include "
1233                            "WPS IE?!");
1234                 sel_uuid = NULL;
1235         }
1236
1237         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1238                 struct wpabuf *ie;
1239                 if (bss == selected)
1240                         continue;
1241                 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1242                 if (!ie)
1243                         continue;
1244                 if (!wps_is_selected_pbc_registrar(ie)) {
1245                         wpabuf_free(ie);
1246                         continue;
1247                 }
1248                 wpa_printf(MSG_DEBUG, "WPS: Another BSS in active PBC mode: "
1249                            MACSTR, MAC2STR(bss->bssid));
1250                 uuid = wps_get_uuid_e(ie);
1251                 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the other BSS",
1252                             uuid, UUID_LEN);
1253                 if (sel_uuid == NULL || uuid == NULL ||
1254                     os_memcmp(sel_uuid, uuid, UUID_LEN) != 0) {
1255                         ret = 1; /* PBC overlap */
1256                         wpa_msg(wpa_s, MSG_INFO, "WPS: PBC overlap detected: "
1257                                 MACSTR " and " MACSTR,
1258                                 MAC2STR(selected->bssid),
1259                                 MAC2STR(bss->bssid));
1260                         wpabuf_free(ie);
1261                         break;
1262                 }
1263
1264                 /* TODO: verify that this is reasonable dual-band situation */
1265
1266                 wpabuf_free(ie);
1267         }
1268
1269         wpabuf_free(wps_ie);
1270
1271         return ret;
1272 }
1273
1274
1275 void wpas_wps_notify_scan_results(struct wpa_supplicant *wpa_s)
1276 {
1277         struct wpa_bss *bss;
1278
1279         if (wpa_s->disconnected || wpa_s->wpa_state >= WPA_ASSOCIATED)
1280                 return;
1281
1282         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1283                 struct wpabuf *ie;
1284                 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1285                 if (!ie)
1286                         continue;
1287                 if (wps_is_selected_pbc_registrar(ie))
1288                         wpa_msg_ctrl(wpa_s, MSG_INFO,
1289                                      WPS_EVENT_AP_AVAILABLE_PBC);
1290                 else if (wps_is_addr_authorized(ie, wpa_s->own_addr, 0))
1291                         wpa_msg_ctrl(wpa_s, MSG_INFO,
1292                                      WPS_EVENT_AP_AVAILABLE_AUTH);
1293                 else if (wps_is_selected_pin_registrar(ie))
1294                         wpa_msg_ctrl(wpa_s, MSG_INFO,
1295                                      WPS_EVENT_AP_AVAILABLE_PIN);
1296                 else
1297                         wpa_msg_ctrl(wpa_s, MSG_INFO,
1298                                      WPS_EVENT_AP_AVAILABLE);
1299                 wpabuf_free(ie);
1300                 break;
1301         }
1302 }
1303
1304
1305 int wpas_wps_searching(struct wpa_supplicant *wpa_s)
1306 {
1307         struct wpa_ssid *ssid;
1308
1309         for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1310                 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && !ssid->disabled)
1311                         return 1;
1312         }
1313
1314         return 0;
1315 }
1316
1317
1318 int wpas_wps_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
1319                               char *end)
1320 {
1321         struct wpabuf *wps_ie;
1322         int ret;
1323
1324         wps_ie = ieee802_11_vendor_ie_concat(ies, ies_len, WPS_DEV_OUI_WFA);
1325         if (wps_ie == NULL)
1326                 return 0;
1327
1328         ret = wps_attr_text(wps_ie, buf, end);
1329         wpabuf_free(wps_ie);
1330         return ret;
1331 }
1332
1333
1334 int wpas_wps_er_start(struct wpa_supplicant *wpa_s, const char *filter)
1335 {
1336 #ifdef CONFIG_WPS_ER
1337         if (wpa_s->wps_er) {
1338                 wps_er_refresh(wpa_s->wps_er);
1339                 return 0;
1340         }
1341         wpa_s->wps_er = wps_er_init(wpa_s->wps, wpa_s->ifname, filter);
1342         if (wpa_s->wps_er == NULL)
1343                 return -1;
1344         return 0;
1345 #else /* CONFIG_WPS_ER */
1346         return 0;
1347 #endif /* CONFIG_WPS_ER */
1348 }
1349
1350
1351 int wpas_wps_er_stop(struct wpa_supplicant *wpa_s)
1352 {
1353 #ifdef CONFIG_WPS_ER
1354         wps_er_deinit(wpa_s->wps_er, NULL, NULL);
1355         wpa_s->wps_er = NULL;
1356 #endif /* CONFIG_WPS_ER */
1357         return 0;
1358 }
1359
1360
1361 #ifdef CONFIG_WPS_ER
1362 int wpas_wps_er_add_pin(struct wpa_supplicant *wpa_s, const u8 *addr,
1363                         const char *uuid, const char *pin)
1364 {
1365         u8 u[UUID_LEN];
1366         int any = 0;
1367
1368         if (os_strcmp(uuid, "any") == 0)
1369                 any = 1;
1370         else if (uuid_str2bin(uuid, u))
1371                 return -1;
1372         return wps_registrar_add_pin(wpa_s->wps->registrar, addr,
1373                                      any ? NULL : u,
1374                                      (const u8 *) pin, os_strlen(pin), 300);
1375 }
1376
1377
1378 int wpas_wps_er_pbc(struct wpa_supplicant *wpa_s, const char *uuid)
1379 {
1380         u8 u[UUID_LEN];
1381
1382         if (uuid_str2bin(uuid, u))
1383                 return -1;
1384         return wps_er_pbc(wpa_s->wps_er, u);
1385 }
1386
1387
1388 int wpas_wps_er_learn(struct wpa_supplicant *wpa_s, const char *uuid,
1389                       const char *pin)
1390 {
1391         u8 u[UUID_LEN];
1392
1393         if (uuid_str2bin(uuid, u))
1394                 return -1;
1395         return wps_er_learn(wpa_s->wps_er, u, (const u8 *) pin,
1396                             os_strlen(pin));
1397 }
1398
1399
1400 int wpas_wps_er_set_config(struct wpa_supplicant *wpa_s, const char *uuid,
1401                            int id)
1402 {
1403         u8 u[UUID_LEN];
1404         struct wpa_ssid *ssid;
1405         struct wps_credential cred;
1406
1407         if (uuid_str2bin(uuid, u))
1408                 return -1;
1409         ssid = wpa_config_get_network(wpa_s->conf, id);
1410         if (ssid == NULL || ssid->ssid == NULL)
1411                 return -1;
1412
1413         os_memset(&cred, 0, sizeof(cred));
1414         if (ssid->ssid_len > 32)
1415                 return -1;
1416         os_memcpy(cred.ssid, ssid->ssid, ssid->ssid_len);
1417         cred.ssid_len = ssid->ssid_len;
1418         if (ssid->key_mgmt & WPA_KEY_MGMT_PSK) {
1419                 cred.auth_type = (ssid->proto & WPA_PROTO_RSN) ?
1420                         WPS_AUTH_WPA2PSK : WPS_AUTH_WPAPSK;
1421                 if (ssid->pairwise_cipher & WPA_CIPHER_CCMP)
1422                         cred.encr_type = WPS_ENCR_AES;
1423                 else
1424                         cred.encr_type = WPS_ENCR_TKIP;
1425                 if (ssid->passphrase) {
1426                         cred.key_len = os_strlen(ssid->passphrase);
1427                         if (cred.key_len >= 64)
1428                                 return -1;
1429                         os_memcpy(cred.key, ssid->passphrase, cred.key_len);
1430                 } else if (ssid->psk_set) {
1431                         cred.key_len = 32;
1432                         os_memcpy(cred.key, ssid->psk, 32);
1433                 } else
1434                         return -1;
1435         } else {
1436                 cred.auth_type = WPS_AUTH_OPEN;
1437                 cred.encr_type = WPS_ENCR_NONE;
1438         }
1439         return wps_er_set_config(wpa_s->wps_er, u, &cred);
1440 }
1441
1442
1443 int wpas_wps_er_config(struct wpa_supplicant *wpa_s, const char *uuid,
1444                        const char *pin, struct wps_new_ap_settings *settings)
1445 {
1446         u8 u[UUID_LEN];
1447         struct wps_credential cred;
1448         size_t len;
1449
1450         if (uuid_str2bin(uuid, u))
1451                 return -1;
1452         if (settings->ssid_hex == NULL || settings->auth == NULL ||
1453             settings->encr == NULL || settings->key_hex == NULL)
1454                 return -1;
1455
1456         os_memset(&cred, 0, sizeof(cred));
1457         len = os_strlen(settings->ssid_hex);
1458         if ((len & 1) || len > 2 * sizeof(cred.ssid) ||
1459             hexstr2bin(settings->ssid_hex, cred.ssid, len / 2))
1460                 return -1;
1461         cred.ssid_len = len / 2;
1462
1463         len = os_strlen(settings->key_hex);
1464         if ((len & 1) || len > 2 * sizeof(cred.key) ||
1465             hexstr2bin(settings->key_hex, cred.key, len / 2))
1466                 return -1;
1467         cred.key_len = len / 2;
1468
1469         if (os_strcmp(settings->auth, "OPEN") == 0)
1470                 cred.auth_type = WPS_AUTH_OPEN;
1471         else if (os_strcmp(settings->auth, "WPAPSK") == 0)
1472                 cred.auth_type = WPS_AUTH_WPAPSK;
1473         else if (os_strcmp(settings->auth, "WPA2PSK") == 0)
1474                 cred.auth_type = WPS_AUTH_WPA2PSK;
1475         else
1476                 return -1;
1477
1478         if (os_strcmp(settings->encr, "NONE") == 0)
1479                 cred.encr_type = WPS_ENCR_NONE;
1480         else if (os_strcmp(settings->encr, "WEP") == 0)
1481                 cred.encr_type = WPS_ENCR_WEP;
1482         else if (os_strcmp(settings->encr, "TKIP") == 0)
1483                 cred.encr_type = WPS_ENCR_TKIP;
1484         else if (os_strcmp(settings->encr, "CCMP") == 0)
1485                 cred.encr_type = WPS_ENCR_AES;
1486         else
1487                 return -1;
1488
1489         return wps_er_config(wpa_s->wps_er, u, (const u8 *) pin,
1490                              os_strlen(pin), &cred);
1491 }
1492
1493
1494 static void wpas_wps_terminate_cb(void *ctx)
1495 {
1496         wpa_printf(MSG_DEBUG, "WPS ER: Terminated");
1497         eloop_terminate();
1498 }
1499 #endif /* CONFIG_WPS_ER */
1500
1501
1502 int wpas_wps_terminate_pending(struct wpa_supplicant *wpa_s)
1503 {
1504 #ifdef CONFIG_WPS_ER
1505         if (wpa_s->wps_er) {
1506                 wps_er_deinit(wpa_s->wps_er, wpas_wps_terminate_cb, wpa_s);
1507                 wpa_s->wps_er = NULL;
1508                 return 1;
1509         }
1510 #endif /* CONFIG_WPS_ER */
1511         return 0;
1512 }
1513
1514
1515 int wpas_wps_in_progress(struct wpa_supplicant *wpa_s)
1516 {
1517         struct wpa_ssid *ssid;
1518
1519         for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1520                 if (!ssid->disabled && ssid->key_mgmt == WPA_KEY_MGMT_WPS)
1521                         return 1;
1522         }
1523
1524         return 0;
1525 }
1526
1527
1528 void wpas_wps_update_config(struct wpa_supplicant *wpa_s)
1529 {
1530         struct wps_context *wps = wpa_s->wps;
1531
1532         if (wps == NULL)
1533                 return;
1534
1535         if (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS) {
1536                 wps->config_methods = wps_config_methods_str2bin(
1537                         wpa_s->conf->config_methods);
1538                 if ((wps->config_methods &
1539                      (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) ==
1540                     (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
1541                         wpa_printf(MSG_ERROR, "WPS: Both Label and Display "
1542                                    "config methods are not allowed at the "
1543                                    "same time");
1544                         wps->config_methods &= ~WPS_CONFIG_LABEL;
1545                 }
1546         }
1547         wps->config_methods = wps_fix_config_methods(wps->config_methods);
1548
1549         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE) {
1550                 if (wpa_s->conf->device_type &&
1551                     wps_dev_type_str2bin(wpa_s->conf->device_type,
1552                                          wps->dev.pri_dev_type) < 0)
1553                         wpa_printf(MSG_ERROR, "WPS: Invalid device_type");
1554         }
1555
1556         if (wpa_s->conf->changed_parameters & CFG_CHANGED_OS_VERSION)
1557                 wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
1558
1559         if (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID) {
1560                 if (is_nil_uuid(wpa_s->conf->uuid)) {
1561                         uuid_gen_mac_addr(wpa_s->own_addr, wps->uuid);
1562                         wpa_hexdump(MSG_DEBUG, "WPS: UUID based on MAC "
1563                                     "address", wps->uuid, WPS_UUID_LEN);
1564                 } else
1565                         os_memcpy(wps->uuid, wpa_s->conf->uuid, WPS_UUID_LEN);
1566         }
1567
1568         if (wpa_s->conf->changed_parameters &
1569             (CFG_CHANGED_DEVICE_NAME | CFG_CHANGED_WPS_STRING)) {
1570                 /* Update pointers to make sure they refer current values */
1571                 wps->dev.device_name = wpa_s->conf->device_name;
1572                 wps->dev.manufacturer = wpa_s->conf->manufacturer;
1573                 wps->dev.model_name = wpa_s->conf->model_name;
1574                 wps->dev.model_number = wpa_s->conf->model_number;
1575                 wps->dev.serial_number = wpa_s->conf->serial_number;
1576         }
1577 }