wps_supplicant.c revision 33e38bfa7159cef089d6ee0d904778e184c72c47
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 42static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx); 43static void wpas_clear_wps(struct wpa_supplicant *wpa_s); 44 45 46static 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 55int 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 118static 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 199static 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 438static 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 446static 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 471static 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 477static 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 509static void wpas_wps_reenable_networks_cb(void *eloop_ctx, void *timeout_ctx); 510 511static 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 539static 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 547static 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 567static 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 592static 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 601static 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 627static 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 637static 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 663static 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 690static 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 742enum 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 752static 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 793static 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 802static 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 868static 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 919int 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 952int 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 */ 998int 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 1027int 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 1071static 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 1084static 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 1105static 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 1122static 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 1145static 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 1174static 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 1191int 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 1274void 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 1298int 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 1366int 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 1423int 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 1488void 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 1523int 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 1536int 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 1552int 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 1569int 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 1580int 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 1596int 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 1606int 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 1618int 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 1661int 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 1713struct 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 1740static int callbacks_pending = 0; 1741 1742static 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 1751int 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 1765int 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 1778void 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 1833struct wpabuf * wpas_wps_nfc_config_token(struct wpa_supplicant *wpa_s, 1834 int ndef) 1835{ 1836#ifdef CONFIG_AP 1837 if (wpa_s->ap_iface) 1838 return wpas_ap_wps_nfc_config_token(wpa_s, ndef); 1839#endif /* CONFIG_AP */ 1840 return NULL; 1841} 1842 1843 1844struct wpabuf * wpas_wps_nfc_token(struct wpa_supplicant *wpa_s, int ndef) 1845{ 1846 if (wpa_s->conf->wps_nfc_pw_from_config) { 1847 return wps_nfc_token_build(ndef, 1848 wpa_s->conf->wps_nfc_dev_pw_id, 1849 wpa_s->conf->wps_nfc_dh_pubkey, 1850 wpa_s->conf->wps_nfc_dev_pw); 1851 } 1852 1853 return wps_nfc_token_gen(ndef, &wpa_s->conf->wps_nfc_dev_pw_id, 1854 &wpa_s->conf->wps_nfc_dh_pubkey, 1855 &wpa_s->conf->wps_nfc_dh_privkey, 1856 &wpa_s->conf->wps_nfc_dev_pw); 1857} 1858 1859 1860int wpas_wps_start_nfc(struct wpa_supplicant *wpa_s, const u8 *bssid) 1861{ 1862 struct wps_context *wps = wpa_s->wps; 1863 char pw[32 * 2 + 1]; 1864 1865 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL || 1866 wpa_s->conf->wps_nfc_dh_privkey == NULL || 1867 wpa_s->conf->wps_nfc_dev_pw == NULL) 1868 return -1; 1869 1870 dh5_free(wps->dh_ctx); 1871 wpabuf_free(wps->dh_pubkey); 1872 wpabuf_free(wps->dh_privkey); 1873 wps->dh_privkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey); 1874 wps->dh_pubkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey); 1875 if (wps->dh_privkey == NULL || wps->dh_pubkey == NULL) { 1876 wps->dh_ctx = NULL; 1877 wpabuf_free(wps->dh_pubkey); 1878 wps->dh_pubkey = NULL; 1879 wpabuf_free(wps->dh_privkey); 1880 wps->dh_privkey = NULL; 1881 return -1; 1882 } 1883 wps->dh_ctx = dh5_init_fixed(wps->dh_privkey, wps->dh_pubkey); 1884 if (wps->dh_ctx == NULL) 1885 return -1; 1886 1887 wpa_snprintf_hex_uppercase(pw, sizeof(pw), 1888 wpabuf_head(wpa_s->conf->wps_nfc_dev_pw), 1889 wpabuf_len(wpa_s->conf->wps_nfc_dev_pw)); 1890 return wpas_wps_start_pin(wpa_s, bssid, pw, 0, 1891 wpa_s->conf->wps_nfc_dev_pw_id); 1892} 1893 1894 1895static int wpas_wps_use_cred(struct wpa_supplicant *wpa_s, 1896 struct wps_parse_attr *attr) 1897{ 1898 wpa_s->wps_ap_channel = 0; 1899 1900 if (wps_oob_use_cred(wpa_s->wps, attr) < 0) 1901 return -1; 1902 1903 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) 1904 return 0; 1905 1906 wpa_printf(MSG_DEBUG, "WPS: Request reconnection with new network " 1907 "based on the received credential added"); 1908 wpa_s->normal_scans = 0; 1909 wpa_supplicant_reinit_autoscan(wpa_s); 1910 if (wpa_s->wps_ap_channel) { 1911 u16 chan = wpa_s->wps_ap_channel; 1912 int freq = 0; 1913 1914 if (chan >= 1 && chan <= 13) 1915 freq = 2407 + 5 * chan; 1916 else if (chan == 14) 1917 freq = 2484; 1918 else if (chan >= 30) 1919 freq = 5000 + 5 * chan; 1920 1921 if (freq) { 1922 wpa_printf(MSG_DEBUG, "WPS: Credential indicated " 1923 "AP channel %u -> %u MHz", chan, freq); 1924 wpa_s->after_wps = 5; 1925 wpa_s->wps_freq = freq; 1926 } 1927 } 1928 wpa_s->disconnected = 0; 1929 wpa_s->reassociate = 1; 1930 wpa_supplicant_req_scan(wpa_s, 0, 0); 1931 1932 return 0; 1933} 1934 1935 1936#ifdef CONFIG_WPS_ER 1937static int wpas_wps_add_nfc_password_token(struct wpa_supplicant *wpa_s, 1938 struct wps_parse_attr *attr) 1939{ 1940 return wps_registrar_add_nfc_password_token( 1941 wpa_s->wps->registrar, attr->oob_dev_password, 1942 attr->oob_dev_password_len); 1943} 1944#endif /* CONFIG_WPS_ER */ 1945 1946 1947static int wpas_wps_nfc_tag_process(struct wpa_supplicant *wpa_s, 1948 const struct wpabuf *wps) 1949{ 1950 struct wps_parse_attr attr; 1951 1952 wpa_hexdump_buf(MSG_DEBUG, "WPS: Received NFC tag payload", wps); 1953 1954 if (wps_parse_msg(wps, &attr)) { 1955 wpa_printf(MSG_DEBUG, "WPS: Ignore invalid data from NFC tag"); 1956 return -1; 1957 } 1958 1959 if (attr.num_cred) 1960 return wpas_wps_use_cred(wpa_s, &attr); 1961 1962#ifdef CONFIG_WPS_ER 1963 if (attr.oob_dev_password) 1964 return wpas_wps_add_nfc_password_token(wpa_s, &attr); 1965#endif /* CONFIG_WPS_ER */ 1966 1967 wpa_printf(MSG_DEBUG, "WPS: Ignore unrecognized NFC tag"); 1968 return -1; 1969} 1970 1971 1972int wpas_wps_nfc_tag_read(struct wpa_supplicant *wpa_s, 1973 const struct wpabuf *data) 1974{ 1975 const struct wpabuf *wps = data; 1976 struct wpabuf *tmp = NULL; 1977 int ret; 1978 1979 if (wpabuf_len(data) < 4) 1980 return -1; 1981 1982 if (*wpabuf_head_u8(data) != 0x10) { 1983 /* Assume this contains full NDEF record */ 1984 tmp = ndef_parse_wifi(data); 1985 if (tmp == NULL) { 1986 wpa_printf(MSG_DEBUG, "WPS: Could not parse NDEF"); 1987 return -1; 1988 } 1989 wps = tmp; 1990 } 1991 1992 ret = wpas_wps_nfc_tag_process(wpa_s, wps); 1993 wpabuf_free(tmp); 1994 return ret; 1995} 1996 1997 1998struct wpabuf * wpas_wps_nfc_handover_req(struct wpa_supplicant *wpa_s, int cr) 1999{ 2000 if (cr) 2001 return ndef_build_wifi_hc(1); 2002 return ndef_build_wifi_hr(); 2003} 2004 2005 2006#ifdef CONFIG_WPS_NFC 2007struct wpabuf * wpas_wps_er_nfc_handover_sel(struct wpa_supplicant *wpa_s, 2008 int ndef, const char *uuid) 2009{ 2010 struct wpabuf *ret; 2011 u8 u[UUID_LEN]; 2012 2013 if (!wpa_s->wps_er) 2014 return NULL; 2015 2016 if (uuid == NULL || uuid_str2bin(uuid, u)) 2017 return NULL; 2018 2019 /* 2020 * Handover Select carrier record for WPS uses the same format as 2021 * configuration token. 2022 */ 2023 ret = wps_er_nfc_config_token(wpa_s->wps_er, u); 2024 if (ndef && ret) { 2025 struct wpabuf *tmp; 2026 tmp = ndef_build_wifi(ret); 2027 wpabuf_free(ret); 2028 if (tmp == NULL) 2029 return NULL; 2030 ret = tmp; 2031 } 2032 2033 return ret; 2034} 2035#endif /* CONFIG_WPS_NFC */ 2036 2037 2038struct wpabuf * wpas_wps_nfc_handover_sel(struct wpa_supplicant *wpa_s, 2039 int ndef, int cr, const char *uuid) 2040{ 2041 struct wpabuf *ret; 2042 if (!cr) 2043 return NULL; 2044 ret = wpas_ap_wps_nfc_handover_sel(wpa_s, ndef); 2045 if (ret) 2046 return ret; 2047 return wpas_wps_er_nfc_handover_sel(wpa_s, ndef, uuid); 2048} 2049 2050 2051int wpas_wps_nfc_rx_handover_req(struct wpa_supplicant *wpa_s, 2052 const struct wpabuf *data) 2053{ 2054 /* TODO */ 2055 return -1; 2056} 2057 2058 2059int wpas_wps_nfc_rx_handover_sel(struct wpa_supplicant *wpa_s, 2060 const struct wpabuf *data) 2061{ 2062 struct wpabuf *wps; 2063 int ret; 2064 2065 wps = ndef_parse_wifi(data); 2066 if (wps == NULL) 2067 return -1; 2068 wpa_printf(MSG_DEBUG, "WPS: Received application/vnd.wfa.wsc " 2069 "payload from NFC connection handover"); 2070 wpa_hexdump_buf_key(MSG_DEBUG, "WPS: NFC payload", wps); 2071 ret = wpas_wps_nfc_tag_process(wpa_s, wps); 2072 wpabuf_free(wps); 2073 2074 return ret; 2075} 2076 2077 2078int wpas_wps_nfc_report_handover(struct wpa_supplicant *wpa_s, 2079 const struct wpabuf *req, 2080 const struct wpabuf *sel) 2081{ 2082 wpa_printf(MSG_DEBUG, "NFC: WPS connection handover reported"); 2083 wpa_hexdump_buf_key(MSG_DEBUG, "WPS: Carrier record in request", req); 2084 wpa_hexdump_buf_key(MSG_DEBUG, "WPS: Carrier record in select", sel); 2085 return wpas_wps_nfc_rx_handover_sel(wpa_s, sel); 2086} 2087 2088#endif /* CONFIG_WPS_NFC */ 2089 2090 2091extern int wpa_debug_level; 2092 2093static void wpas_wps_dump_ap_info(struct wpa_supplicant *wpa_s) 2094{ 2095 size_t i; 2096 struct os_time now; 2097 2098 if (wpa_debug_level > MSG_DEBUG) 2099 return; 2100 2101 if (wpa_s->wps_ap == NULL) 2102 return; 2103 2104 os_get_time(&now); 2105 2106 for (i = 0; i < wpa_s->num_wps_ap; i++) { 2107 struct wps_ap_info *ap = &wpa_s->wps_ap[i]; 2108 struct wpa_blacklist *e = wpa_blacklist_get(wpa_s, ap->bssid); 2109 2110 wpa_printf(MSG_DEBUG, "WPS: AP[%d] " MACSTR " type=%d " 2111 "tries=%d last_attempt=%d sec ago blacklist=%d", 2112 (int) i, MAC2STR(ap->bssid), ap->type, ap->tries, 2113 ap->last_attempt.sec > 0 ? 2114 (int) now.sec - (int) ap->last_attempt.sec : -1, 2115 e ? e->count : 0); 2116 } 2117} 2118 2119 2120static struct wps_ap_info * wpas_wps_get_ap_info(struct wpa_supplicant *wpa_s, 2121 const u8 *bssid) 2122{ 2123 size_t i; 2124 2125 if (wpa_s->wps_ap == NULL) 2126 return NULL; 2127 2128 for (i = 0; i < wpa_s->num_wps_ap; i++) { 2129 struct wps_ap_info *ap = &wpa_s->wps_ap[i]; 2130 if (os_memcmp(ap->bssid, bssid, ETH_ALEN) == 0) 2131 return ap; 2132 } 2133 2134 return NULL; 2135} 2136 2137 2138static void wpas_wps_update_ap_info_bss(struct wpa_supplicant *wpa_s, 2139 struct wpa_scan_res *res) 2140{ 2141 struct wpabuf *wps; 2142 enum wps_ap_info_type type; 2143 struct wps_ap_info *ap; 2144 int r; 2145 2146 if (wpa_scan_get_vendor_ie(res, WPS_IE_VENDOR_TYPE) == NULL) 2147 return; 2148 2149 wps = wpa_scan_get_vendor_ie_multi(res, WPS_IE_VENDOR_TYPE); 2150 if (wps == NULL) 2151 return; 2152 2153 r = wps_is_addr_authorized(wps, wpa_s->own_addr, 1); 2154 if (r == 2) 2155 type = WPS_AP_SEL_REG_OUR; 2156 else if (r == 1) 2157 type = WPS_AP_SEL_REG; 2158 else 2159 type = WPS_AP_NOT_SEL_REG; 2160 2161 wpabuf_free(wps); 2162 2163 ap = wpas_wps_get_ap_info(wpa_s, res->bssid); 2164 if (ap) { 2165 if (ap->type != type) { 2166 wpa_printf(MSG_DEBUG, "WPS: AP " MACSTR 2167 " changed type %d -> %d", 2168 MAC2STR(res->bssid), ap->type, type); 2169 ap->type = type; 2170 if (type != WPS_AP_NOT_SEL_REG) 2171 wpa_blacklist_del(wpa_s, ap->bssid); 2172 } 2173 return; 2174 } 2175 2176 ap = os_realloc_array(wpa_s->wps_ap, wpa_s->num_wps_ap + 1, 2177 sizeof(struct wps_ap_info)); 2178 if (ap == NULL) 2179 return; 2180 2181 wpa_s->wps_ap = ap; 2182 ap = &wpa_s->wps_ap[wpa_s->num_wps_ap]; 2183 wpa_s->num_wps_ap++; 2184 2185 os_memset(ap, 0, sizeof(*ap)); 2186 os_memcpy(ap->bssid, res->bssid, ETH_ALEN); 2187 ap->type = type; 2188 wpa_printf(MSG_DEBUG, "WPS: AP " MACSTR " type %d added", 2189 MAC2STR(ap->bssid), ap->type); 2190} 2191 2192 2193void wpas_wps_update_ap_info(struct wpa_supplicant *wpa_s, 2194 struct wpa_scan_results *scan_res) 2195{ 2196 size_t i; 2197 2198 for (i = 0; i < scan_res->num; i++) 2199 wpas_wps_update_ap_info_bss(wpa_s, scan_res->res[i]); 2200 2201 wpas_wps_dump_ap_info(wpa_s); 2202} 2203 2204 2205void wpas_wps_notify_assoc(struct wpa_supplicant *wpa_s, const u8 *bssid) 2206{ 2207 struct wps_ap_info *ap; 2208 if (!wpa_s->wps_ap_iter) 2209 return; 2210 ap = wpas_wps_get_ap_info(wpa_s, bssid); 2211 if (ap == NULL) 2212 return; 2213 ap->tries++; 2214 os_get_time(&ap->last_attempt); 2215} 2216