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      1 /*
      2  * wpa_supplicant / WPS integration
      3  * Copyright (c) 2008-2010, Jouni Malinen <j (at) 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/dh_group5.h"
     15 #include "common/ieee802_11_defs.h"
     16 #include "common/ieee802_11_common.h"
     17 #include "common/wpa_common.h"
     18 #include "common/wpa_ctrl.h"
     19 #include "eap_common/eap_wsc_common.h"
     20 #include "eap_peer/eap.h"
     21 #include "eapol_supp/eapol_supp_sm.h"
     22 #include "rsn_supp/wpa.h"
     23 #include "config.h"
     24 #include "wpa_supplicant_i.h"
     25 #include "driver_i.h"
     26 #include "notify.h"
     27 #include "blacklist.h"
     28 #include "bss.h"
     29 #include "scan.h"
     30 #include "ap.h"
     31 #include "p2p/p2p.h"
     32 #include "p2p_supplicant.h"
     33 #include "wps_supplicant.h"
     34 
     35 
     36 #ifndef WPS_PIN_SCAN_IGNORE_SEL_REG
     37 #define WPS_PIN_SCAN_IGNORE_SEL_REG 3
     38 #endif /* WPS_PIN_SCAN_IGNORE_SEL_REG */
     39 
     40 static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx);
     41 static void wpas_clear_wps(struct wpa_supplicant *wpa_s);
     42 
     43 
     44 int wpas_wps_eapol_cb(struct wpa_supplicant *wpa_s)
     45 {
     46 	if (!wpa_s->wps_success &&
     47 	    wpa_s->current_ssid &&
     48 	    eap_is_wps_pin_enrollee(&wpa_s->current_ssid->eap)) {
     49 		const u8 *bssid = wpa_s->bssid;
     50 		if (is_zero_ether_addr(bssid))
     51 			bssid = wpa_s->pending_bssid;
     52 
     53 		wpa_printf(MSG_DEBUG, "WPS: PIN registration with " MACSTR
     54 			   " did not succeed - continue trying to find "
     55 			   "suitable AP", MAC2STR(bssid));
     56 		wpa_blacklist_add(wpa_s, bssid);
     57 
     58 		wpa_supplicant_deauthenticate(wpa_s,
     59 					      WLAN_REASON_DEAUTH_LEAVING);
     60 		wpa_s->reassociate = 1;
     61 		wpa_supplicant_req_scan(wpa_s,
     62 					wpa_s->blacklist_cleared ? 5 : 0, 0);
     63 		wpa_s->blacklist_cleared = 0;
     64 		return 1;
     65 	}
     66 
     67 	eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
     68 	if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && !wpa_s->wps_success)
     69 		wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_FAIL);
     70 
     71 	if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && wpa_s->current_ssid &&
     72 	    !(wpa_s->current_ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
     73 		int disabled = wpa_s->current_ssid->disabled;
     74 		unsigned int freq = wpa_s->assoc_freq;
     75 		wpa_printf(MSG_DEBUG, "WPS: Network configuration replaced - "
     76 			   "try to associate with the received credential "
     77 			   "(freq=%u)", freq);
     78 		wpa_supplicant_deauthenticate(wpa_s,
     79 					      WLAN_REASON_DEAUTH_LEAVING);
     80 		if (disabled) {
     81 			wpa_printf(MSG_DEBUG, "WPS: Current network is "
     82 				   "disabled - wait for user to enable");
     83 			return 1;
     84 		}
     85 		wpa_s->after_wps = 5;
     86 		wpa_s->wps_freq = freq;
     87 		wpa_s->normal_scans = 0;
     88 		wpa_s->reassociate = 1;
     89 		wpa_supplicant_req_scan(wpa_s, 0, 0);
     90 		return 1;
     91 	}
     92 
     93 	if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && wpa_s->current_ssid) {
     94 		wpa_printf(MSG_DEBUG, "WPS: Registration completed - waiting "
     95 			   "for external credential processing");
     96 		wpas_clear_wps(wpa_s);
     97 		wpa_supplicant_deauthenticate(wpa_s,
     98 					      WLAN_REASON_DEAUTH_LEAVING);
     99 		return 1;
    100 	}
    101 
    102 	return 0;
    103 }
    104 
    105 
    106 static void wpas_wps_security_workaround(struct wpa_supplicant *wpa_s,
    107 					 struct wpa_ssid *ssid,
    108 					 const struct wps_credential *cred)
    109 {
    110 	struct wpa_driver_capa capa;
    111 	struct wpa_bss *bss;
    112 	const u8 *ie;
    113 	struct wpa_ie_data adv;
    114 	int wpa2 = 0, ccmp = 0;
    115 
    116 	/*
    117 	 * Many existing WPS APs do not know how to negotiate WPA2 or CCMP in
    118 	 * case they are configured for mixed mode operation (WPA+WPA2 and
    119 	 * TKIP+CCMP). Try to use scan results to figure out whether the AP
    120 	 * actually supports stronger security and select that if the client
    121 	 * has support for it, too.
    122 	 */
    123 
    124 	if (wpa_drv_get_capa(wpa_s, &capa))
    125 		return; /* Unknown what driver supports */
    126 
    127 	if (ssid->ssid == NULL)
    128 		return;
    129 	bss = wpa_bss_get(wpa_s, cred->mac_addr, ssid->ssid, ssid->ssid_len);
    130 	if (bss == NULL) {
    131 		wpa_printf(MSG_DEBUG, "WPS: The AP was not found from BSS "
    132 			   "table - use credential as-is");
    133 		return;
    134 	}
    135 
    136 	wpa_printf(MSG_DEBUG, "WPS: AP found from BSS table");
    137 
    138 	ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
    139 	if (ie && wpa_parse_wpa_ie(ie, 2 + ie[1], &adv) == 0) {
    140 		wpa2 = 1;
    141 		if (adv.pairwise_cipher & WPA_CIPHER_CCMP)
    142 			ccmp = 1;
    143 	} else {
    144 		ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
    145 		if (ie && wpa_parse_wpa_ie(ie, 2 + ie[1], &adv) == 0 &&
    146 		    adv.pairwise_cipher & WPA_CIPHER_CCMP)
    147 			ccmp = 1;
    148 	}
    149 
    150 	if (ie == NULL && (ssid->proto & WPA_PROTO_WPA) &&
    151 	    (ssid->pairwise_cipher & WPA_CIPHER_TKIP)) {
    152 		/*
    153 		 * TODO: This could be the initial AP configuration and the
    154 		 * Beacon contents could change shortly. Should request a new
    155 		 * scan and delay addition of the network until the updated
    156 		 * scan results are available.
    157 		 */
    158 		wpa_printf(MSG_DEBUG, "WPS: The AP did not yet advertise WPA "
    159 			   "support - use credential as-is");
    160 		return;
    161 	}
    162 
    163 	if (ccmp && !(ssid->pairwise_cipher & WPA_CIPHER_CCMP) &&
    164 	    (ssid->pairwise_cipher & WPA_CIPHER_TKIP) &&
    165 	    (capa.key_mgmt & WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK)) {
    166 		wpa_printf(MSG_DEBUG, "WPS: Add CCMP into the credential "
    167 			   "based on scan results");
    168 		if (wpa_s->conf->ap_scan == 1)
    169 			ssid->pairwise_cipher |= WPA_CIPHER_CCMP;
    170 		else
    171 			ssid->pairwise_cipher = WPA_CIPHER_CCMP;
    172 	}
    173 
    174 	if (wpa2 && !(ssid->proto & WPA_PROTO_RSN) &&
    175 	    (ssid->proto & WPA_PROTO_WPA) &&
    176 	    (capa.enc & WPA_DRIVER_CAPA_ENC_CCMP)) {
    177 		wpa_printf(MSG_DEBUG, "WPS: Add WPA2 into the credential "
    178 			   "based on scan results");
    179 		if (wpa_s->conf->ap_scan == 1)
    180 			ssid->proto |= WPA_PROTO_RSN;
    181 		else
    182 			ssid->proto = WPA_PROTO_RSN;
    183 	}
    184 }
    185 
    186 
    187 static int wpa_supplicant_wps_cred(void *ctx,
    188 				   const struct wps_credential *cred)
    189 {
    190 	struct wpa_supplicant *wpa_s = ctx;
    191 	struct wpa_ssid *ssid = wpa_s->current_ssid;
    192 	u8 key_idx = 0;
    193 	u16 auth_type;
    194 #ifdef CONFIG_WPS_REG_DISABLE_OPEN
    195 	int registrar = 0;
    196 #endif /* CONFIG_WPS_REG_DISABLE_OPEN */
    197 
    198 	if ((wpa_s->conf->wps_cred_processing == 1 ||
    199 	     wpa_s->conf->wps_cred_processing == 2) && cred->cred_attr) {
    200 		size_t blen = cred->cred_attr_len * 2 + 1;
    201 		char *buf = os_malloc(blen);
    202 		if (buf) {
    203 			wpa_snprintf_hex(buf, blen,
    204 					 cred->cred_attr, cred->cred_attr_len);
    205 			wpa_msg(wpa_s, MSG_INFO, "%s%s",
    206 				WPS_EVENT_CRED_RECEIVED, buf);
    207 			os_free(buf);
    208 		}
    209 
    210 		wpas_notify_wps_credential(wpa_s, cred);
    211 	} else
    212 		wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_CRED_RECEIVED);
    213 
    214 	wpa_hexdump_key(MSG_DEBUG, "WPS: Received Credential attribute",
    215 			cred->cred_attr, cred->cred_attr_len);
    216 
    217 	if (wpa_s->conf->wps_cred_processing == 1)
    218 		return 0;
    219 
    220 	wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID", cred->ssid, cred->ssid_len);
    221 	wpa_printf(MSG_DEBUG, "WPS: Authentication Type 0x%x",
    222 		   cred->auth_type);
    223 	wpa_printf(MSG_DEBUG, "WPS: Encryption Type 0x%x", cred->encr_type);
    224 	wpa_printf(MSG_DEBUG, "WPS: Network Key Index %d", cred->key_idx);
    225 	wpa_hexdump_key(MSG_DEBUG, "WPS: Network Key",
    226 			cred->key, cred->key_len);
    227 	wpa_printf(MSG_DEBUG, "WPS: MAC Address " MACSTR,
    228 		   MAC2STR(cred->mac_addr));
    229 
    230 	auth_type = cred->auth_type;
    231 	if (auth_type == (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) {
    232 		wpa_printf(MSG_DEBUG, "WPS: Workaround - convert mixed-mode "
    233 			   "auth_type into WPA2PSK");
    234 		auth_type = WPS_AUTH_WPA2PSK;
    235 	}
    236 
    237 	if (auth_type != WPS_AUTH_OPEN &&
    238 	    auth_type != WPS_AUTH_SHARED &&
    239 	    auth_type != WPS_AUTH_WPAPSK &&
    240 	    auth_type != WPS_AUTH_WPA2PSK) {
    241 		wpa_printf(MSG_DEBUG, "WPS: Ignored credentials for "
    242 			   "unsupported authentication type 0x%x",
    243 			   auth_type);
    244 		return 0;
    245 	}
    246 
    247 	if (ssid && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
    248 		wpa_printf(MSG_DEBUG, "WPS: Replace WPS network block based "
    249 			   "on the received credential");
    250 #ifdef CONFIG_WPS_REG_DISABLE_OPEN
    251 		if (ssid->eap.identity &&
    252 		    ssid->eap.identity_len == WSC_ID_REGISTRAR_LEN &&
    253 		    os_memcmp(ssid->eap.identity, WSC_ID_REGISTRAR,
    254 			      WSC_ID_REGISTRAR_LEN) == 0)
    255 			registrar = 1;
    256 #endif /* CONFIG_WPS_REG_DISABLE_OPEN */
    257 		os_free(ssid->eap.identity);
    258 		ssid->eap.identity = NULL;
    259 		ssid->eap.identity_len = 0;
    260 		os_free(ssid->eap.phase1);
    261 		ssid->eap.phase1 = NULL;
    262 		os_free(ssid->eap.eap_methods);
    263 		ssid->eap.eap_methods = NULL;
    264 		if (!ssid->p2p_group)
    265 			ssid->temporary = 0;
    266 	} else {
    267 		wpa_printf(MSG_DEBUG, "WPS: Create a new network based on the "
    268 			   "received credential");
    269 		ssid = wpa_config_add_network(wpa_s->conf);
    270 		if (ssid == NULL)
    271 			return -1;
    272 		wpas_notify_network_added(wpa_s, ssid);
    273 	}
    274 
    275 	wpa_config_set_network_defaults(ssid);
    276 
    277 	os_free(ssid->ssid);
    278 	ssid->ssid = os_malloc(cred->ssid_len);
    279 	if (ssid->ssid) {
    280 		os_memcpy(ssid->ssid, cred->ssid, cred->ssid_len);
    281 		ssid->ssid_len = cred->ssid_len;
    282 	}
    283 
    284 	switch (cred->encr_type) {
    285 	case WPS_ENCR_NONE:
    286 		break;
    287 	case WPS_ENCR_WEP:
    288 		if (cred->key_len <= 0)
    289 			break;
    290 		if (cred->key_len != 5 && cred->key_len != 13 &&
    291 		    cred->key_len != 10 && cred->key_len != 26) {
    292 			wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key length "
    293 				   "%lu", (unsigned long) cred->key_len);
    294 			return -1;
    295 		}
    296 		if (cred->key_idx > NUM_WEP_KEYS) {
    297 			wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key index %d",
    298 				   cred->key_idx);
    299 			return -1;
    300 		}
    301 		if (cred->key_idx)
    302 			key_idx = cred->key_idx - 1;
    303 		if (cred->key_len == 10 || cred->key_len == 26) {
    304 			if (hexstr2bin((char *) cred->key,
    305 				       ssid->wep_key[key_idx],
    306 				       cred->key_len / 2) < 0) {
    307 				wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key "
    308 					   "%d", key_idx);
    309 				return -1;
    310 			}
    311 			ssid->wep_key_len[key_idx] = cred->key_len / 2;
    312 		} else {
    313 			os_memcpy(ssid->wep_key[key_idx], cred->key,
    314 				  cred->key_len);
    315 			ssid->wep_key_len[key_idx] = cred->key_len;
    316 		}
    317 		ssid->wep_tx_keyidx = key_idx;
    318 		break;
    319 	case WPS_ENCR_TKIP:
    320 		ssid->pairwise_cipher = WPA_CIPHER_TKIP;
    321 		break;
    322 	case WPS_ENCR_AES:
    323 		ssid->pairwise_cipher = WPA_CIPHER_CCMP;
    324 		break;
    325 	}
    326 
    327 	switch (auth_type) {
    328 	case WPS_AUTH_OPEN:
    329 		ssid->auth_alg = WPA_AUTH_ALG_OPEN;
    330 		ssid->key_mgmt = WPA_KEY_MGMT_NONE;
    331 		ssid->proto = 0;
    332 #ifdef CONFIG_WPS_REG_DISABLE_OPEN
    333 		if (registrar) {
    334 			wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OPEN_NETWORK
    335 				"id=%d - Credentials for an open "
    336 				"network disabled by default - use "
    337 				"'select_network %d' to enable",
    338 				ssid->id, ssid->id);
    339 			ssid->disabled = 1;
    340 		}
    341 #endif /* CONFIG_WPS_REG_DISABLE_OPEN */
    342 		break;
    343 	case WPS_AUTH_SHARED:
    344 		ssid->auth_alg = WPA_AUTH_ALG_SHARED;
    345 		ssid->key_mgmt = WPA_KEY_MGMT_NONE;
    346 		ssid->proto = 0;
    347 		break;
    348 	case WPS_AUTH_WPAPSK:
    349 		ssid->auth_alg = WPA_AUTH_ALG_OPEN;
    350 		ssid->key_mgmt = WPA_KEY_MGMT_PSK;
    351 		ssid->proto = WPA_PROTO_WPA;
    352 		break;
    353 	case WPS_AUTH_WPA:
    354 		ssid->auth_alg = WPA_AUTH_ALG_OPEN;
    355 		ssid->key_mgmt = WPA_KEY_MGMT_IEEE8021X;
    356 		ssid->proto = WPA_PROTO_WPA;
    357 		break;
    358 	case WPS_AUTH_WPA2:
    359 		ssid->auth_alg = WPA_AUTH_ALG_OPEN;
    360 		ssid->key_mgmt = WPA_KEY_MGMT_IEEE8021X;
    361 		ssid->proto = WPA_PROTO_RSN;
    362 		break;
    363 	case WPS_AUTH_WPA2PSK:
    364 		ssid->auth_alg = WPA_AUTH_ALG_OPEN;
    365 		ssid->key_mgmt = WPA_KEY_MGMT_PSK;
    366 		ssid->proto = WPA_PROTO_RSN;
    367 		break;
    368 	}
    369 
    370 	if (ssid->key_mgmt == WPA_KEY_MGMT_PSK) {
    371 		if (cred->key_len == 2 * PMK_LEN) {
    372 			if (hexstr2bin((const char *) cred->key, ssid->psk,
    373 				       PMK_LEN)) {
    374 				wpa_printf(MSG_ERROR, "WPS: Invalid Network "
    375 					   "Key");
    376 				return -1;
    377 			}
    378 			ssid->psk_set = 1;
    379 			ssid->export_keys = 1;
    380 		} else if (cred->key_len >= 8 && cred->key_len < 2 * PMK_LEN) {
    381 			os_free(ssid->passphrase);
    382 			ssid->passphrase = os_malloc(cred->key_len + 1);
    383 			if (ssid->passphrase == NULL)
    384 				return -1;
    385 			os_memcpy(ssid->passphrase, cred->key, cred->key_len);
    386 			ssid->passphrase[cred->key_len] = '\0';
    387 			wpa_config_update_psk(ssid);
    388 			ssid->export_keys = 1;
    389 		} else {
    390 			wpa_printf(MSG_ERROR, "WPS: Invalid Network Key "
    391 				   "length %lu",
    392 				   (unsigned long) cred->key_len);
    393 			return -1;
    394 		}
    395 	}
    396 
    397 	wpas_wps_security_workaround(wpa_s, ssid, cred);
    398 
    399 #ifndef CONFIG_NO_CONFIG_WRITE
    400 	if (wpa_s->conf->update_config &&
    401 	    wpa_config_write(wpa_s->confname, wpa_s->conf)) {
    402 		wpa_printf(MSG_DEBUG, "WPS: Failed to update configuration");
    403 		return -1;
    404 	}
    405 #endif /* CONFIG_NO_CONFIG_WRITE */
    406 
    407 	return 0;
    408 }
    409 
    410 
    411 #ifdef CONFIG_P2P
    412 static void wpas_wps_pbc_overlap_cb(void *eloop_ctx, void *timeout_ctx)
    413 {
    414 	struct wpa_supplicant *wpa_s = eloop_ctx;
    415 	wpas_p2p_notif_pbc_overlap(wpa_s);
    416 }
    417 #endif /* CONFIG_P2P */
    418 
    419 
    420 static void wpa_supplicant_wps_event_m2d(struct wpa_supplicant *wpa_s,
    421 					 struct wps_event_m2d *m2d)
    422 {
    423 	wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_M2D
    424 		"dev_password_id=%d config_error=%d",
    425 		m2d->dev_password_id, m2d->config_error);
    426 	wpas_notify_wps_event_m2d(wpa_s, m2d);
    427 #ifdef CONFIG_P2P
    428 	if (wpa_s->parent && wpa_s->parent != wpa_s) {
    429 		wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_M2D
    430 			"dev_password_id=%d config_error=%d",
    431 			m2d->dev_password_id, m2d->config_error);
    432 	}
    433 	if (m2d->config_error == WPS_CFG_MULTIPLE_PBC_DETECTED) {
    434 		/*
    435 		 * Notify P2P from eloop timeout to avoid issues with the
    436 		 * interface getting removed while processing a message.
    437 		 */
    438 		eloop_register_timeout(0, 0, wpas_wps_pbc_overlap_cb, wpa_s,
    439 				       NULL);
    440 	}
    441 #endif /* CONFIG_P2P */
    442 }
    443 
    444 
    445 static const char * wps_event_fail_reason[NUM_WPS_EI_VALUES] = {
    446 	"No Error", /* WPS_EI_NO_ERROR */
    447 	"TKIP Only Prohibited", /* WPS_EI_SECURITY_TKIP_ONLY_PROHIBITED */
    448 	"WEP Prohibited" /* WPS_EI_SECURITY_WEP_PROHIBITED */
    449 };
    450 
    451 static void wpa_supplicant_wps_event_fail(struct wpa_supplicant *wpa_s,
    452 					  struct wps_event_fail *fail)
    453 {
    454 	if (fail->error_indication > 0 &&
    455 	    fail->error_indication < NUM_WPS_EI_VALUES) {
    456 		wpa_msg(wpa_s, MSG_INFO,
    457 			WPS_EVENT_FAIL "msg=%d config_error=%d reason=%d (%s)",
    458 			fail->msg, fail->config_error, fail->error_indication,
    459 			wps_event_fail_reason[fail->error_indication]);
    460 		if (wpa_s->parent && wpa_s->parent != wpa_s)
    461 			wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_FAIL
    462 				"msg=%d config_error=%d reason=%d (%s)",
    463 				fail->msg, fail->config_error,
    464 				fail->error_indication,
    465 				wps_event_fail_reason[fail->error_indication]);
    466 	} else {
    467 		wpa_msg(wpa_s, MSG_INFO,
    468 			WPS_EVENT_FAIL "msg=%d config_error=%d",
    469 			fail->msg, fail->config_error);
    470 		if (wpa_s->parent && wpa_s->parent != wpa_s)
    471 			wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_FAIL
    472 				"msg=%d config_error=%d",
    473 				fail->msg, fail->config_error);
    474 	}
    475 	wpas_clear_wps(wpa_s);
    476 	wpas_notify_wps_event_fail(wpa_s, fail);
    477 #ifdef CONFIG_P2P
    478 	wpas_p2p_wps_failed(wpa_s, fail);
    479 #endif /* CONFIG_P2P */
    480 }
    481 
    482 
    483 static void wpa_supplicant_wps_event_success(struct wpa_supplicant *wpa_s)
    484 {
    485 	wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_SUCCESS);
    486 	wpa_s->wps_success = 1;
    487 	wpas_notify_wps_event_success(wpa_s);
    488 #ifdef CONFIG_P2P
    489 	wpas_p2p_wps_success(wpa_s, wpa_s->bssid, 0);
    490 #endif /* CONFIG_P2P */
    491 }
    492 
    493 
    494 static void wpa_supplicant_wps_event_er_ap_add(struct wpa_supplicant *wpa_s,
    495 					       struct wps_event_er_ap *ap)
    496 {
    497 	char uuid_str[100];
    498 	char dev_type[WPS_DEV_TYPE_BUFSIZE];
    499 
    500 	uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str));
    501 	if (ap->pri_dev_type)
    502 		wps_dev_type_bin2str(ap->pri_dev_type, dev_type,
    503 				     sizeof(dev_type));
    504 	else
    505 		dev_type[0] = '\0';
    506 
    507 	wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_ADD "%s " MACSTR
    508 		" pri_dev_type=%s wps_state=%d |%s|%s|%s|%s|%s|%s|",
    509 		uuid_str, MAC2STR(ap->mac_addr), dev_type, ap->wps_state,
    510 		ap->friendly_name ? ap->friendly_name : "",
    511 		ap->manufacturer ? ap->manufacturer : "",
    512 		ap->model_description ? ap->model_description : "",
    513 		ap->model_name ? ap->model_name : "",
    514 		ap->manufacturer_url ? ap->manufacturer_url : "",
    515 		ap->model_url ? ap->model_url : "");
    516 }
    517 
    518 
    519 static void wpa_supplicant_wps_event_er_ap_remove(struct wpa_supplicant *wpa_s,
    520 						  struct wps_event_er_ap *ap)
    521 {
    522 	char uuid_str[100];
    523 	uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str));
    524 	wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_REMOVE "%s", uuid_str);
    525 }
    526 
    527 
    528 static void wpa_supplicant_wps_event_er_enrollee_add(
    529 	struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee)
    530 {
    531 	char uuid_str[100];
    532 	char dev_type[WPS_DEV_TYPE_BUFSIZE];
    533 
    534 	uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str));
    535 	if (enrollee->pri_dev_type)
    536 		wps_dev_type_bin2str(enrollee->pri_dev_type, dev_type,
    537 				     sizeof(dev_type));
    538 	else
    539 		dev_type[0] = '\0';
    540 
    541 	wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_ADD "%s " MACSTR
    542 		" M1=%d config_methods=0x%x dev_passwd_id=%d pri_dev_type=%s "
    543 		"|%s|%s|%s|%s|%s|",
    544 		uuid_str, MAC2STR(enrollee->mac_addr), enrollee->m1_received,
    545 		enrollee->config_methods, enrollee->dev_passwd_id, dev_type,
    546 		enrollee->dev_name ? enrollee->dev_name : "",
    547 		enrollee->manufacturer ? enrollee->manufacturer : "",
    548 		enrollee->model_name ? enrollee->model_name : "",
    549 		enrollee->model_number ? enrollee->model_number : "",
    550 		enrollee->serial_number ? enrollee->serial_number : "");
    551 }
    552 
    553 
    554 static void wpa_supplicant_wps_event_er_enrollee_remove(
    555 	struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee)
    556 {
    557 	char uuid_str[100];
    558 	uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str));
    559 	wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_REMOVE "%s " MACSTR,
    560 		uuid_str, MAC2STR(enrollee->mac_addr));
    561 }
    562 
    563 
    564 static void wpa_supplicant_wps_event_er_ap_settings(
    565 	struct wpa_supplicant *wpa_s,
    566 	struct wps_event_er_ap_settings *ap_settings)
    567 {
    568 	char uuid_str[100];
    569 	char key_str[65];
    570 	const struct wps_credential *cred = ap_settings->cred;
    571 
    572 	key_str[0] = '\0';
    573 	if (cred->auth_type & (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) {
    574 		if (cred->key_len >= 8 && cred->key_len <= 64) {
    575 			os_memcpy(key_str, cred->key, cred->key_len);
    576 			key_str[cred->key_len] = '\0';
    577 		}
    578 	}
    579 
    580 	uuid_bin2str(ap_settings->uuid, uuid_str, sizeof(uuid_str));
    581 	/* Use wpa_msg_ctrl to avoid showing the key in debug log */
    582 	wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_SETTINGS
    583 		     "uuid=%s ssid=%s auth_type=0x%04x encr_type=0x%04x "
    584 		     "key=%s",
    585 		     uuid_str, wpa_ssid_txt(cred->ssid, cred->ssid_len),
    586 		     cred->auth_type, cred->encr_type, key_str);
    587 }
    588 
    589 
    590 static void wpa_supplicant_wps_event_er_set_sel_reg(
    591 	struct wpa_supplicant *wpa_s,
    592 	struct wps_event_er_set_selected_registrar *ev)
    593 {
    594 	char uuid_str[100];
    595 
    596 	uuid_bin2str(ev->uuid, uuid_str, sizeof(uuid_str));
    597 	switch (ev->state) {
    598 	case WPS_ER_SET_SEL_REG_START:
    599 		wpa_msg(wpa_s, MSG_DEBUG, WPS_EVENT_ER_SET_SEL_REG
    600 			"uuid=%s state=START sel_reg=%d dev_passwd_id=%u "
    601 			"sel_reg_config_methods=0x%x",
    602 			uuid_str, ev->sel_reg, ev->dev_passwd_id,
    603 			ev->sel_reg_config_methods);
    604 		break;
    605 	case WPS_ER_SET_SEL_REG_DONE:
    606 		wpa_msg(wpa_s, MSG_DEBUG, WPS_EVENT_ER_SET_SEL_REG
    607 			"uuid=%s state=DONE", uuid_str);
    608 		break;
    609 	case WPS_ER_SET_SEL_REG_FAILED:
    610 		wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_SET_SEL_REG
    611 			"uuid=%s state=FAILED", uuid_str);
    612 		break;
    613 	}
    614 }
    615 
    616 
    617 static void wpa_supplicant_wps_event(void *ctx, enum wps_event event,
    618 				     union wps_event_data *data)
    619 {
    620 	struct wpa_supplicant *wpa_s = ctx;
    621 	switch (event) {
    622 	case WPS_EV_M2D:
    623 		wpa_supplicant_wps_event_m2d(wpa_s, &data->m2d);
    624 		break;
    625 	case WPS_EV_FAIL:
    626 		wpa_supplicant_wps_event_fail(wpa_s, &data->fail);
    627 		break;
    628 	case WPS_EV_SUCCESS:
    629 		wpa_supplicant_wps_event_success(wpa_s);
    630 		break;
    631 	case WPS_EV_PWD_AUTH_FAIL:
    632 #ifdef CONFIG_AP
    633 		if (wpa_s->ap_iface && data->pwd_auth_fail.enrollee)
    634 			wpa_supplicant_ap_pwd_auth_fail(wpa_s);
    635 #endif /* CONFIG_AP */
    636 		break;
    637 	case WPS_EV_PBC_OVERLAP:
    638 		break;
    639 	case WPS_EV_PBC_TIMEOUT:
    640 		break;
    641 	case WPS_EV_ER_AP_ADD:
    642 		wpa_supplicant_wps_event_er_ap_add(wpa_s, &data->ap);
    643 		break;
    644 	case WPS_EV_ER_AP_REMOVE:
    645 		wpa_supplicant_wps_event_er_ap_remove(wpa_s, &data->ap);
    646 		break;
    647 	case WPS_EV_ER_ENROLLEE_ADD:
    648 		wpa_supplicant_wps_event_er_enrollee_add(wpa_s,
    649 							 &data->enrollee);
    650 		break;
    651 	case WPS_EV_ER_ENROLLEE_REMOVE:
    652 		wpa_supplicant_wps_event_er_enrollee_remove(wpa_s,
    653 							    &data->enrollee);
    654 		break;
    655 	case WPS_EV_ER_AP_SETTINGS:
    656 		wpa_supplicant_wps_event_er_ap_settings(wpa_s,
    657 							&data->ap_settings);
    658 		break;
    659 	case WPS_EV_ER_SET_SELECTED_REGISTRAR:
    660 		wpa_supplicant_wps_event_er_set_sel_reg(wpa_s,
    661 							&data->set_sel_reg);
    662 		break;
    663 	case WPS_EV_AP_PIN_SUCCESS:
    664 		break;
    665 	}
    666 }
    667 
    668 
    669 enum wps_request_type wpas_wps_get_req_type(struct wpa_ssid *ssid)
    670 {
    671 	if (eap_is_wps_pbc_enrollee(&ssid->eap) ||
    672 	    eap_is_wps_pin_enrollee(&ssid->eap))
    673 		return WPS_REQ_ENROLLEE;
    674 	else
    675 		return WPS_REQ_REGISTRAR;
    676 }
    677 
    678 
    679 static void wpas_clear_wps(struct wpa_supplicant *wpa_s)
    680 {
    681 	int id;
    682 	struct wpa_ssid *ssid, *remove_ssid = NULL, *prev_current;
    683 
    684 	prev_current = wpa_s->current_ssid;
    685 
    686 	eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
    687 
    688 	/* Remove any existing WPS network from configuration */
    689 	ssid = wpa_s->conf->ssid;
    690 	while (ssid) {
    691 		if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
    692 			if (ssid == wpa_s->current_ssid) {
    693 				wpa_s->current_ssid = NULL;
    694 				if (ssid != NULL)
    695 					wpas_notify_network_changed(wpa_s);
    696 			}
    697 			id = ssid->id;
    698 			remove_ssid = ssid;
    699 		} else
    700 			id = -1;
    701 		ssid = ssid->next;
    702 		if (id >= 0) {
    703 			if (prev_current == remove_ssid) {
    704 				wpa_sm_set_config(wpa_s->wpa, NULL);
    705 				eapol_sm_notify_config(wpa_s->eapol, NULL,
    706 						       NULL);
    707 			}
    708 			wpas_notify_network_removed(wpa_s, remove_ssid);
    709 			wpa_config_remove_network(wpa_s->conf, id);
    710 		}
    711 	}
    712 }
    713 
    714 
    715 static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx)
    716 {
    717 	struct wpa_supplicant *wpa_s = eloop_ctx;
    718 	wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_TIMEOUT "Requested operation timed "
    719 		"out");
    720 	wpas_clear_wps(wpa_s);
    721 }
    722 
    723 
    724 static struct wpa_ssid * wpas_wps_add_network(struct wpa_supplicant *wpa_s,
    725 					      int registrar, const u8 *bssid)
    726 {
    727 	struct wpa_ssid *ssid;
    728 
    729 	ssid = wpa_config_add_network(wpa_s->conf);
    730 	if (ssid == NULL)
    731 		return NULL;
    732 	wpas_notify_network_added(wpa_s, ssid);
    733 	wpa_config_set_network_defaults(ssid);
    734 	ssid->temporary = 1;
    735 	if (wpa_config_set(ssid, "key_mgmt", "WPS", 0) < 0 ||
    736 	    wpa_config_set(ssid, "eap", "WSC", 0) < 0 ||
    737 	    wpa_config_set(ssid, "identity", registrar ?
    738 			   "\"" WSC_ID_REGISTRAR "\"" :
    739 			   "\"" WSC_ID_ENROLLEE "\"", 0) < 0) {
    740 		wpas_notify_network_removed(wpa_s, ssid);
    741 		wpa_config_remove_network(wpa_s->conf, ssid->id);
    742 		return NULL;
    743 	}
    744 
    745 	if (bssid) {
    746 #ifndef CONFIG_P2P
    747 		struct wpa_bss *bss;
    748 		int count = 0;
    749 #endif /* CONFIG_P2P */
    750 
    751 		os_memcpy(ssid->bssid, bssid, ETH_ALEN);
    752 		ssid->bssid_set = 1;
    753 
    754 		/*
    755 		 * Note: With P2P, the SSID may change at the time the WPS
    756 		 * provisioning is started, so better not filter the AP based
    757 		 * on the current SSID in the scan results.
    758 		 */
    759 #ifndef CONFIG_P2P
    760 		dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
    761 			if (os_memcmp(bssid, bss->bssid, ETH_ALEN) != 0)
    762 				continue;
    763 
    764 			os_free(ssid->ssid);
    765 			ssid->ssid = os_malloc(bss->ssid_len);
    766 			if (ssid->ssid == NULL)
    767 				break;
    768 			os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
    769 			ssid->ssid_len = bss->ssid_len;
    770 			wpa_hexdump_ascii(MSG_DEBUG, "WPS: Picked SSID from "
    771 					  "scan results",
    772 					  ssid->ssid, ssid->ssid_len);
    773 			count++;
    774 		}
    775 
    776 		if (count > 1) {
    777 			wpa_printf(MSG_DEBUG, "WPS: More than one SSID found "
    778 				   "for the AP; use wildcard");
    779 			os_free(ssid->ssid);
    780 			ssid->ssid = NULL;
    781 			ssid->ssid_len = 0;
    782 		}
    783 #endif /* CONFIG_P2P */
    784 	}
    785 
    786 	return ssid;
    787 }
    788 
    789 
    790 static void wpas_wps_reassoc(struct wpa_supplicant *wpa_s,
    791 			     struct wpa_ssid *selected, const u8 *bssid)
    792 {
    793 	struct wpa_ssid *ssid;
    794 	struct wpa_bss *bss;
    795 
    796 	wpa_s->known_wps_freq = 0;
    797 	if (bssid) {
    798 		bss = wpa_bss_get_bssid(wpa_s, bssid);
    799 		if (bss && bss->freq > 0) {
    800 			wpa_s->known_wps_freq = 1;
    801 			wpa_s->wps_freq = bss->freq;
    802 		}
    803 	}
    804 
    805 	if (wpa_s->current_ssid)
    806 		wpa_supplicant_deauthenticate(
    807 			wpa_s, WLAN_REASON_DEAUTH_LEAVING);
    808 
    809 	/* Mark all other networks disabled and trigger reassociation */
    810 	ssid = wpa_s->conf->ssid;
    811 	while (ssid) {
    812 		int was_disabled = ssid->disabled;
    813 		/*
    814 		 * In case the network object corresponds to a persistent group
    815 		 * then do not send out network disabled signal. In addition,
    816 		 * do not change disabled status of persistent network objects
    817 		 * from 2 to 1 should we connect to another network.
    818 		 */
    819 		if (was_disabled != 2) {
    820 			ssid->disabled = ssid != selected;
    821 			if (was_disabled != ssid->disabled)
    822 				wpas_notify_network_enabled_changed(wpa_s,
    823 								    ssid);
    824 		}
    825 		ssid = ssid->next;
    826 	}
    827 	wpa_s->disconnected = 0;
    828 	wpa_s->reassociate = 1;
    829 	wpa_s->scan_runs = 0;
    830 	wpa_s->normal_scans = 0;
    831 	wpa_s->wps_success = 0;
    832 	wpa_s->blacklist_cleared = 0;
    833 	wpa_supplicant_req_scan(wpa_s, 0, 0);
    834 }
    835 
    836 
    837 int wpas_wps_start_pbc(struct wpa_supplicant *wpa_s, const u8 *bssid,
    838 		       int p2p_group)
    839 {
    840 	struct wpa_ssid *ssid;
    841 	wpas_clear_wps(wpa_s);
    842 	ssid = wpas_wps_add_network(wpa_s, 0, bssid);
    843 	if (ssid == NULL)
    844 		return -1;
    845 	ssid->temporary = 1;
    846 	ssid->p2p_group = p2p_group;
    847 #ifdef CONFIG_P2P
    848 	if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) {
    849 		ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1);
    850 		if (ssid->ssid) {
    851 			ssid->ssid_len = wpa_s->go_params->ssid_len;
    852 			os_memcpy(ssid->ssid, wpa_s->go_params->ssid,
    853 				  ssid->ssid_len);
    854 			wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP "
    855 					  "SSID", ssid->ssid, ssid->ssid_len);
    856 		}
    857 	}
    858 #endif /* CONFIG_P2P */
    859 	wpa_config_set(ssid, "phase1", "\"pbc=1\"", 0);
    860 	if (wpa_s->wps_fragment_size)
    861 		ssid->eap.fragment_size = wpa_s->wps_fragment_size;
    862 	eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
    863 			       wpa_s, NULL);
    864 	wpas_wps_reassoc(wpa_s, ssid, bssid);
    865 	return 0;
    866 }
    867 
    868 
    869 int wpas_wps_start_pin(struct wpa_supplicant *wpa_s, const u8 *bssid,
    870 		       const char *pin, int p2p_group, u16 dev_pw_id)
    871 {
    872 	struct wpa_ssid *ssid;
    873 	char val[128];
    874 	unsigned int rpin = 0;
    875 
    876 	wpas_clear_wps(wpa_s);
    877 	ssid = wpas_wps_add_network(wpa_s, 0, bssid);
    878 	if (ssid == NULL)
    879 		return -1;
    880 	ssid->temporary = 1;
    881 	ssid->p2p_group = p2p_group;
    882 #ifdef CONFIG_P2P
    883 	if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) {
    884 		ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1);
    885 		if (ssid->ssid) {
    886 			ssid->ssid_len = wpa_s->go_params->ssid_len;
    887 			os_memcpy(ssid->ssid, wpa_s->go_params->ssid,
    888 				  ssid->ssid_len);
    889 			wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP "
    890 					  "SSID", ssid->ssid, ssid->ssid_len);
    891 		}
    892 	}
    893 #endif /* CONFIG_P2P */
    894 	if (pin)
    895 		os_snprintf(val, sizeof(val), "\"pin=%s dev_pw_id=%u\"",
    896 			    pin, dev_pw_id);
    897 	else {
    898 		rpin = wps_generate_pin();
    899 		os_snprintf(val, sizeof(val), "\"pin=%08d dev_pw_id=%u\"",
    900 			    rpin, dev_pw_id);
    901 	}
    902 	wpa_config_set(ssid, "phase1", val, 0);
    903 	if (wpa_s->wps_fragment_size)
    904 		ssid->eap.fragment_size = wpa_s->wps_fragment_size;
    905 	eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
    906 			       wpa_s, NULL);
    907 	wpas_wps_reassoc(wpa_s, ssid, bssid);
    908 	return rpin;
    909 }
    910 
    911 
    912 /* Cancel the wps pbc/pin requests */
    913 int wpas_wps_cancel(struct wpa_supplicant *wpa_s)
    914 {
    915 #ifdef CONFIG_AP
    916 	if (wpa_s->ap_iface) {
    917 		wpa_printf(MSG_DEBUG, "WPS: Cancelling in AP mode");
    918 		return wpa_supplicant_ap_wps_cancel(wpa_s);
    919 	}
    920 #endif /* CONFIG_AP */
    921 
    922 	if (wpa_s->wpa_state == WPA_SCANNING) {
    923 		wpa_printf(MSG_DEBUG, "WPS: Cancel operation - cancel scan");
    924 		wpa_supplicant_cancel_scan(wpa_s);
    925 		wpas_clear_wps(wpa_s);
    926 	} else if (wpa_s->wpa_state >= WPA_ASSOCIATED) {
    927 		wpa_printf(MSG_DEBUG, "WPS: Cancel operation - "
    928 			   "deauthenticate");
    929 		wpa_supplicant_deauthenticate(wpa_s,
    930 					      WLAN_REASON_DEAUTH_LEAVING);
    931 		wpas_clear_wps(wpa_s);
    932 	}
    933 
    934 	return 0;
    935 }
    936 
    937 
    938 #ifdef CONFIG_WPS_OOB
    939 int wpas_wps_start_oob(struct wpa_supplicant *wpa_s, char *device_type,
    940 		       char *path, char *method, char *name)
    941 {
    942 	struct wps_context *wps = wpa_s->wps;
    943 	struct oob_device_data *oob_dev;
    944 
    945 	oob_dev = wps_get_oob_device(device_type);
    946 	if (oob_dev == NULL)
    947 		return -1;
    948 	oob_dev->device_path = path;
    949 	oob_dev->device_name = name;
    950 	wps->oob_conf.oob_method = wps_get_oob_method(method);
    951 
    952 	if (wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_E) {
    953 		/*
    954 		 * Use pre-configured DH keys in order to be able to write the
    955 		 * key hash into the OOB file.
    956 		 */
    957 		wpabuf_free(wps->dh_pubkey);
    958 		wpabuf_free(wps->dh_privkey);
    959 		wps->dh_privkey = NULL;
    960 		wps->dh_pubkey = NULL;
    961 		dh5_free(wps->dh_ctx);
    962 		wps->dh_ctx = dh5_init(&wps->dh_privkey, &wps->dh_pubkey);
    963 		wps->dh_pubkey = wpabuf_zeropad(wps->dh_pubkey, 192);
    964 		if (wps->dh_ctx == NULL || wps->dh_pubkey == NULL) {
    965 			wpa_printf(MSG_ERROR, "WPS: Failed to initialize "
    966 				   "Diffie-Hellman handshake");
    967 			return -1;
    968 		}
    969 	}
    970 
    971 	if (wps->oob_conf.oob_method == OOB_METHOD_CRED)
    972 		wpas_clear_wps(wpa_s);
    973 
    974 	if (wps_process_oob(wps, oob_dev, 0) < 0)
    975 		return -1;
    976 
    977 	if ((wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_E ||
    978 	     wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_R) &&
    979 	    wpas_wps_start_pin(wpa_s, NULL,
    980 			       wpabuf_head(wps->oob_conf.dev_password), 0,
    981 			       DEV_PW_DEFAULT) < 0)
    982 			return -1;
    983 
    984 	return 0;
    985 }
    986 #endif /* CONFIG_WPS_OOB */
    987 
    988 
    989 int wpas_wps_start_reg(struct wpa_supplicant *wpa_s, const u8 *bssid,
    990 		       const char *pin, struct wps_new_ap_settings *settings)
    991 {
    992 	struct wpa_ssid *ssid;
    993 	char val[200];
    994 	char *pos, *end;
    995 	int res;
    996 
    997 	if (!pin)
    998 		return -1;
    999 	wpas_clear_wps(wpa_s);
   1000 	ssid = wpas_wps_add_network(wpa_s, 1, bssid);
   1001 	if (ssid == NULL)
   1002 		return -1;
   1003 	ssid->temporary = 1;
   1004 	pos = val;
   1005 	end = pos + sizeof(val);
   1006 	res = os_snprintf(pos, end - pos, "\"pin=%s", pin);
   1007 	if (res < 0 || res >= end - pos)
   1008 		return -1;
   1009 	pos += res;
   1010 	if (settings) {
   1011 		res = os_snprintf(pos, end - pos, " new_ssid=%s new_auth=%s "
   1012 				  "new_encr=%s new_key=%s",
   1013 				  settings->ssid_hex, settings->auth,
   1014 				  settings->encr, settings->key_hex);
   1015 		if (res < 0 || res >= end - pos)
   1016 			return -1;
   1017 		pos += res;
   1018 	}
   1019 	res = os_snprintf(pos, end - pos, "\"");
   1020 	if (res < 0 || res >= end - pos)
   1021 		return -1;
   1022 	wpa_config_set(ssid, "phase1", val, 0);
   1023 	if (wpa_s->wps_fragment_size)
   1024 		ssid->eap.fragment_size = wpa_s->wps_fragment_size;
   1025 	eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
   1026 			       wpa_s, NULL);
   1027 	wpas_wps_reassoc(wpa_s, ssid, bssid);
   1028 	return 0;
   1029 }
   1030 
   1031 
   1032 static int wpas_wps_new_psk_cb(void *ctx, const u8 *mac_addr, const u8 *psk,
   1033 			       size_t psk_len)
   1034 {
   1035 	wpa_printf(MSG_DEBUG, "WPS: Received new WPA/WPA2-PSK from WPS for "
   1036 		   "STA " MACSTR, MAC2STR(mac_addr));
   1037 	wpa_hexdump_key(MSG_DEBUG, "Per-device PSK", psk, psk_len);
   1038 
   1039 	/* TODO */
   1040 
   1041 	return 0;
   1042 }
   1043 
   1044 
   1045 static void wpas_wps_pin_needed_cb(void *ctx, const u8 *uuid_e,
   1046 				   const struct wps_device_data *dev)
   1047 {
   1048 	char uuid[40], txt[400];
   1049 	int len;
   1050 	char devtype[WPS_DEV_TYPE_BUFSIZE];
   1051 	if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
   1052 		return;
   1053 	wpa_printf(MSG_DEBUG, "WPS: PIN needed for UUID-E %s", uuid);
   1054 	len = os_snprintf(txt, sizeof(txt), "WPS-EVENT-PIN-NEEDED %s " MACSTR
   1055 			  " [%s|%s|%s|%s|%s|%s]",
   1056 			  uuid, MAC2STR(dev->mac_addr), dev->device_name,
   1057 			  dev->manufacturer, dev->model_name,
   1058 			  dev->model_number, dev->serial_number,
   1059 			  wps_dev_type_bin2str(dev->pri_dev_type, devtype,
   1060 					       sizeof(devtype)));
   1061 	if (len > 0 && len < (int) sizeof(txt))
   1062 		wpa_printf(MSG_INFO, "%s", txt);
   1063 }
   1064 
   1065 
   1066 static void wpas_wps_set_sel_reg_cb(void *ctx, int sel_reg, u16 dev_passwd_id,
   1067 				    u16 sel_reg_config_methods)
   1068 {
   1069 #ifdef CONFIG_WPS_ER
   1070 	struct wpa_supplicant *wpa_s = ctx;
   1071 
   1072 	if (wpa_s->wps_er == NULL)
   1073 		return;
   1074 	wpa_printf(MSG_DEBUG, "WPS ER: SetSelectedRegistrar - sel_reg=%d "
   1075 		   "dev_password_id=%u sel_reg_config_methods=0x%x",
   1076 		   sel_reg, dev_passwd_id, sel_reg_config_methods);
   1077 	wps_er_set_sel_reg(wpa_s->wps_er, sel_reg, dev_passwd_id,
   1078 			   sel_reg_config_methods);
   1079 #endif /* CONFIG_WPS_ER */
   1080 }
   1081 
   1082 
   1083 static u16 wps_fix_config_methods(u16 config_methods)
   1084 {
   1085 #ifdef CONFIG_WPS2
   1086 	if ((config_methods &
   1087 	     (WPS_CONFIG_DISPLAY | WPS_CONFIG_VIRT_DISPLAY |
   1088 	      WPS_CONFIG_PHY_DISPLAY)) == WPS_CONFIG_DISPLAY) {
   1089 		wpa_printf(MSG_INFO, "WPS: Converting display to "
   1090 			   "virtual_display for WPS 2.0 compliance");
   1091 		config_methods |= WPS_CONFIG_VIRT_DISPLAY;
   1092 	}
   1093 	if ((config_methods &
   1094 	     (WPS_CONFIG_PUSHBUTTON | WPS_CONFIG_VIRT_PUSHBUTTON |
   1095 	      WPS_CONFIG_PHY_PUSHBUTTON)) == WPS_CONFIG_PUSHBUTTON) {
   1096 		wpa_printf(MSG_INFO, "WPS: Converting push_button to "
   1097 			   "virtual_push_button for WPS 2.0 compliance");
   1098 		config_methods |= WPS_CONFIG_VIRT_PUSHBUTTON;
   1099 	}
   1100 #endif /* CONFIG_WPS2 */
   1101 
   1102 	return config_methods;
   1103 }
   1104 
   1105 
   1106 static void wpas_wps_set_uuid(struct wpa_supplicant *wpa_s,
   1107 			      struct wps_context *wps)
   1108 {
   1109 	wpa_printf(MSG_DEBUG, "WPS: Set UUID for interface %s", wpa_s->ifname);
   1110 	if (is_nil_uuid(wpa_s->conf->uuid)) {
   1111 		struct wpa_supplicant *first;
   1112 		first = wpa_s->global->ifaces;
   1113 		while (first && first->next)
   1114 			first = first->next;
   1115 		if (first && first != wpa_s) {
   1116 			os_memcpy(wps->uuid, wpa_s->global->ifaces->wps->uuid,
   1117 				  WPS_UUID_LEN);
   1118 			wpa_hexdump(MSG_DEBUG, "WPS: UUID from the first "
   1119 				    "interface", wps->uuid, WPS_UUID_LEN);
   1120 		} else {
   1121 			uuid_gen_mac_addr(wpa_s->own_addr, wps->uuid);
   1122 			wpa_hexdump(MSG_DEBUG, "WPS: UUID based on MAC "
   1123 				    "address", wps->uuid, WPS_UUID_LEN);
   1124 		}
   1125 	} else {
   1126 		os_memcpy(wps->uuid, wpa_s->conf->uuid, WPS_UUID_LEN);
   1127 		wpa_hexdump(MSG_DEBUG, "WPS: UUID based on configuration",
   1128 			    wps->uuid, WPS_UUID_LEN);
   1129 	}
   1130 }
   1131 
   1132 
   1133 int wpas_wps_init(struct wpa_supplicant *wpa_s)
   1134 {
   1135 	struct wps_context *wps;
   1136 	struct wps_registrar_config rcfg;
   1137 	struct hostapd_hw_modes *modes;
   1138 	u16 m;
   1139 
   1140 	wps = os_zalloc(sizeof(*wps));
   1141 	if (wps == NULL)
   1142 		return -1;
   1143 
   1144 	wps->cred_cb = wpa_supplicant_wps_cred;
   1145 	wps->event_cb = wpa_supplicant_wps_event;
   1146 	wps->cb_ctx = wpa_s;
   1147 
   1148 	wps->dev.device_name = wpa_s->conf->device_name;
   1149 	wps->dev.manufacturer = wpa_s->conf->manufacturer;
   1150 	wps->dev.model_name = wpa_s->conf->model_name;
   1151 	wps->dev.model_number = wpa_s->conf->model_number;
   1152 	wps->dev.serial_number = wpa_s->conf->serial_number;
   1153 	wps->config_methods =
   1154 		wps_config_methods_str2bin(wpa_s->conf->config_methods);
   1155 	if ((wps->config_methods & (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) ==
   1156 	    (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
   1157 		wpa_printf(MSG_ERROR, "WPS: Both Label and Display config "
   1158 			   "methods are not allowed at the same time");
   1159 		os_free(wps);
   1160 		return -1;
   1161 	}
   1162 	wps->config_methods = wps_fix_config_methods(wps->config_methods);
   1163 	wps->dev.config_methods = wps->config_methods;
   1164 	os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type,
   1165 		  WPS_DEV_TYPE_LEN);
   1166 
   1167 	wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
   1168 	os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type,
   1169 		  WPS_DEV_TYPE_LEN * wps->dev.num_sec_dev_types);
   1170 
   1171 	wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
   1172 	modes = wpa_s->hw.modes;
   1173 	if (modes) {
   1174 		for (m = 0; m < wpa_s->hw.num_modes; m++) {
   1175 			if (modes[m].mode == HOSTAPD_MODE_IEEE80211B ||
   1176 			    modes[m].mode == HOSTAPD_MODE_IEEE80211G)
   1177 				wps->dev.rf_bands |= WPS_RF_24GHZ;
   1178 			else if (modes[m].mode == HOSTAPD_MODE_IEEE80211A)
   1179 				wps->dev.rf_bands |= WPS_RF_50GHZ;
   1180 		}
   1181 	}
   1182 	if (wps->dev.rf_bands == 0) {
   1183 		/*
   1184 		 * Default to claiming support for both bands if the driver
   1185 		 * does not provide support for fetching supported bands.
   1186 		 */
   1187 		wps->dev.rf_bands = WPS_RF_24GHZ | WPS_RF_50GHZ;
   1188 	}
   1189 	os_memcpy(wps->dev.mac_addr, wpa_s->own_addr, ETH_ALEN);
   1190 	wpas_wps_set_uuid(wpa_s, wps);
   1191 
   1192 	wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK;
   1193 	wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP;
   1194 
   1195 	os_memset(&rcfg, 0, sizeof(rcfg));
   1196 	rcfg.new_psk_cb = wpas_wps_new_psk_cb;
   1197 	rcfg.pin_needed_cb = wpas_wps_pin_needed_cb;
   1198 	rcfg.set_sel_reg_cb = wpas_wps_set_sel_reg_cb;
   1199 	rcfg.cb_ctx = wpa_s;
   1200 
   1201 	wps->registrar = wps_registrar_init(wps, &rcfg);
   1202 	if (wps->registrar == NULL) {
   1203 		wpa_printf(MSG_DEBUG, "Failed to initialize WPS Registrar");
   1204 		os_free(wps);
   1205 		return -1;
   1206 	}
   1207 
   1208 	wpa_s->wps = wps;
   1209 
   1210 	return 0;
   1211 }
   1212 
   1213 
   1214 void wpas_wps_deinit(struct wpa_supplicant *wpa_s)
   1215 {
   1216 	eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
   1217 
   1218 	if (wpa_s->wps == NULL)
   1219 		return;
   1220 
   1221 #ifdef CONFIG_WPS_ER
   1222 	wps_er_deinit(wpa_s->wps_er, NULL, NULL);
   1223 	wpa_s->wps_er = NULL;
   1224 #endif /* CONFIG_WPS_ER */
   1225 
   1226 	wps_registrar_deinit(wpa_s->wps->registrar);
   1227 	wpabuf_free(wpa_s->wps->dh_pubkey);
   1228 	wpabuf_free(wpa_s->wps->dh_privkey);
   1229 	wpabuf_free(wpa_s->wps->oob_conf.pubkey_hash);
   1230 	wpabuf_free(wpa_s->wps->oob_conf.dev_password);
   1231 	os_free(wpa_s->wps->network_key);
   1232 	os_free(wpa_s->wps);
   1233 	wpa_s->wps = NULL;
   1234 }
   1235 
   1236 
   1237 int wpas_wps_ssid_bss_match(struct wpa_supplicant *wpa_s,
   1238 			    struct wpa_ssid *ssid, struct wpa_scan_res *bss)
   1239 {
   1240 	struct wpabuf *wps_ie;
   1241 
   1242 	if (!(ssid->key_mgmt & WPA_KEY_MGMT_WPS))
   1243 		return -1;
   1244 
   1245 	wps_ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
   1246 	if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
   1247 		if (!wps_ie) {
   1248 			wpa_printf(MSG_DEBUG, "   skip - non-WPS AP");
   1249 			return 0;
   1250 		}
   1251 
   1252 		if (!wps_is_selected_pbc_registrar(wps_ie)) {
   1253 			wpa_printf(MSG_DEBUG, "   skip - WPS AP "
   1254 				   "without active PBC Registrar");
   1255 			wpabuf_free(wps_ie);
   1256 			return 0;
   1257 		}
   1258 
   1259 		/* TODO: overlap detection */
   1260 		wpa_printf(MSG_DEBUG, "   selected based on WPS IE "
   1261 			   "(Active PBC)");
   1262 		wpabuf_free(wps_ie);
   1263 		return 1;
   1264 	}
   1265 
   1266 	if (eap_is_wps_pin_enrollee(&ssid->eap)) {
   1267 		if (!wps_ie) {
   1268 			wpa_printf(MSG_DEBUG, "   skip - non-WPS AP");
   1269 			return 0;
   1270 		}
   1271 
   1272 		/*
   1273 		 * Start with WPS APs that advertise our address as an
   1274 		 * authorized MAC (v2.0) or active PIN Registrar (v1.0) and
   1275 		 * allow any WPS AP after couple of scans since some APs do not
   1276 		 * set Selected Registrar attribute properly when using
   1277 		 * external Registrar.
   1278 		 */
   1279 		if (!wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1)) {
   1280 			if (wpa_s->scan_runs < WPS_PIN_SCAN_IGNORE_SEL_REG) {
   1281 				wpa_printf(MSG_DEBUG, "   skip - WPS AP "
   1282 					   "without active PIN Registrar");
   1283 				wpabuf_free(wps_ie);
   1284 				return 0;
   1285 			}
   1286 			wpa_printf(MSG_DEBUG, "   selected based on WPS IE");
   1287 		} else {
   1288 			wpa_printf(MSG_DEBUG, "   selected based on WPS IE "
   1289 				   "(Authorized MAC or Active PIN)");
   1290 		}
   1291 		wpabuf_free(wps_ie);
   1292 		return 1;
   1293 	}
   1294 
   1295 	if (wps_ie) {
   1296 		wpa_printf(MSG_DEBUG, "   selected based on WPS IE");
   1297 		wpabuf_free(wps_ie);
   1298 		return 1;
   1299 	}
   1300 
   1301 	return -1;
   1302 }
   1303 
   1304 
   1305 int wpas_wps_ssid_wildcard_ok(struct wpa_supplicant *wpa_s,
   1306 			      struct wpa_ssid *ssid,
   1307 			      struct wpa_scan_res *bss)
   1308 {
   1309 	struct wpabuf *wps_ie = NULL;
   1310 	int ret = 0;
   1311 
   1312 	if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
   1313 		wps_ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
   1314 		if (wps_ie && wps_is_selected_pbc_registrar(wps_ie)) {
   1315 			/* allow wildcard SSID for WPS PBC */
   1316 			ret = 1;
   1317 		}
   1318 	} else if (eap_is_wps_pin_enrollee(&ssid->eap)) {
   1319 		wps_ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
   1320 		if (wps_ie &&
   1321 		    (wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1) ||
   1322 		     wpa_s->scan_runs >= WPS_PIN_SCAN_IGNORE_SEL_REG)) {
   1323 			/* allow wildcard SSID for WPS PIN */
   1324 			ret = 1;
   1325 		}
   1326 	}
   1327 
   1328 	if (!ret && ssid->bssid_set &&
   1329 	    os_memcmp(ssid->bssid, bss->bssid, ETH_ALEN) == 0) {
   1330 		/* allow wildcard SSID due to hardcoded BSSID match */
   1331 		ret = 1;
   1332 	}
   1333 
   1334 #ifdef CONFIG_WPS_STRICT
   1335 	if (wps_ie) {
   1336 		if (wps_validate_beacon_probe_resp(wps_ie, bss->beacon_ie_len >
   1337 						   0, bss->bssid) < 0)
   1338 			ret = 0;
   1339 		if (bss->beacon_ie_len) {
   1340 			struct wpabuf *bcn_wps;
   1341 			bcn_wps = wpa_scan_get_vendor_ie_multi_beacon(
   1342 				bss, WPS_IE_VENDOR_TYPE);
   1343 			if (bcn_wps == NULL) {
   1344 				wpa_printf(MSG_DEBUG, "WPS: Mandatory WPS IE "
   1345 					   "missing from AP Beacon");
   1346 				ret = 0;
   1347 			} else {
   1348 				if (wps_validate_beacon(wps_ie) < 0)
   1349 					ret = 0;
   1350 				wpabuf_free(bcn_wps);
   1351 			}
   1352 		}
   1353 	}
   1354 #endif /* CONFIG_WPS_STRICT */
   1355 
   1356 	wpabuf_free(wps_ie);
   1357 
   1358 	return ret;
   1359 }
   1360 
   1361 
   1362 int wpas_wps_scan_pbc_overlap(struct wpa_supplicant *wpa_s,
   1363 			      struct wpa_bss *selected, struct wpa_ssid *ssid)
   1364 {
   1365 	const u8 *sel_uuid, *uuid;
   1366 	struct wpabuf *wps_ie;
   1367 	int ret = 0;
   1368 	struct wpa_bss *bss;
   1369 
   1370 	if (!eap_is_wps_pbc_enrollee(&ssid->eap))
   1371 		return 0;
   1372 
   1373 	wpa_printf(MSG_DEBUG, "WPS: Check whether PBC session overlap is "
   1374 		   "present in scan results; selected BSSID " MACSTR,
   1375 		   MAC2STR(selected->bssid));
   1376 
   1377 	/* Make sure that only one AP is in active PBC mode */
   1378 	wps_ie = wpa_bss_get_vendor_ie_multi(selected, WPS_IE_VENDOR_TYPE);
   1379 	if (wps_ie) {
   1380 		sel_uuid = wps_get_uuid_e(wps_ie);
   1381 		wpa_hexdump(MSG_DEBUG, "WPS: UUID of the selected BSS",
   1382 			    sel_uuid, UUID_LEN);
   1383 	} else {
   1384 		wpa_printf(MSG_DEBUG, "WPS: Selected BSS does not include "
   1385 			   "WPS IE?!");
   1386 		sel_uuid = NULL;
   1387 	}
   1388 
   1389 	dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
   1390 		struct wpabuf *ie;
   1391 		if (bss == selected)
   1392 			continue;
   1393 		ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
   1394 		if (!ie)
   1395 			continue;
   1396 		if (!wps_is_selected_pbc_registrar(ie)) {
   1397 			wpabuf_free(ie);
   1398 			continue;
   1399 		}
   1400 		wpa_printf(MSG_DEBUG, "WPS: Another BSS in active PBC mode: "
   1401 			   MACSTR, MAC2STR(bss->bssid));
   1402 		uuid = wps_get_uuid_e(ie);
   1403 		wpa_hexdump(MSG_DEBUG, "WPS: UUID of the other BSS",
   1404 			    uuid, UUID_LEN);
   1405 		if (sel_uuid == NULL || uuid == NULL ||
   1406 		    os_memcmp(sel_uuid, uuid, UUID_LEN) != 0) {
   1407 			ret = 1; /* PBC overlap */
   1408 			wpa_msg(wpa_s, MSG_INFO, "WPS: PBC overlap detected: "
   1409 				MACSTR " and " MACSTR,
   1410 				MAC2STR(selected->bssid),
   1411 				MAC2STR(bss->bssid));
   1412 			wpabuf_free(ie);
   1413 			break;
   1414 		}
   1415 
   1416 		/* TODO: verify that this is reasonable dual-band situation */
   1417 
   1418 		wpabuf_free(ie);
   1419 	}
   1420 
   1421 	wpabuf_free(wps_ie);
   1422 
   1423 	return ret;
   1424 }
   1425 
   1426 
   1427 void wpas_wps_notify_scan_results(struct wpa_supplicant *wpa_s)
   1428 {
   1429 	struct wpa_bss *bss;
   1430 	unsigned int pbc = 0, auth = 0, pin = 0, wps = 0;
   1431 
   1432 	if (wpa_s->disconnected || wpa_s->wpa_state >= WPA_ASSOCIATED)
   1433 		return;
   1434 
   1435 	dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
   1436 		struct wpabuf *ie;
   1437 		ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
   1438 		if (!ie)
   1439 			continue;
   1440 		if (wps_is_selected_pbc_registrar(ie))
   1441 			pbc++;
   1442 		else if (wps_is_addr_authorized(ie, wpa_s->own_addr, 0))
   1443 			auth++;
   1444 		else if (wps_is_selected_pin_registrar(ie))
   1445 			pin++;
   1446 		else
   1447 			wps++;
   1448 		wpabuf_free(ie);
   1449 	}
   1450 
   1451 	if (pbc)
   1452 		wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PBC);
   1453 	else if (auth)
   1454 		wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_AUTH);
   1455 	else if (pin)
   1456 		wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PIN);
   1457 	else if (wps)
   1458 		wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE);
   1459 }
   1460 
   1461 
   1462 int wpas_wps_searching(struct wpa_supplicant *wpa_s)
   1463 {
   1464 	struct wpa_ssid *ssid;
   1465 
   1466 	for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
   1467 		if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && !ssid->disabled)
   1468 			return 1;
   1469 	}
   1470 
   1471 	return 0;
   1472 }
   1473 
   1474 
   1475 int wpas_wps_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
   1476 			      char *end)
   1477 {
   1478 	struct wpabuf *wps_ie;
   1479 	int ret;
   1480 
   1481 	wps_ie = ieee802_11_vendor_ie_concat(ies, ies_len, WPS_DEV_OUI_WFA);
   1482 	if (wps_ie == NULL)
   1483 		return 0;
   1484 
   1485 	ret = wps_attr_text(wps_ie, buf, end);
   1486 	wpabuf_free(wps_ie);
   1487 	return ret;
   1488 }
   1489 
   1490 
   1491 int wpas_wps_er_start(struct wpa_supplicant *wpa_s, const char *filter)
   1492 {
   1493 #ifdef CONFIG_WPS_ER
   1494 	if (wpa_s->wps_er) {
   1495 		wps_er_refresh(wpa_s->wps_er);
   1496 		return 0;
   1497 	}
   1498 	wpa_s->wps_er = wps_er_init(wpa_s->wps, wpa_s->ifname, filter);
   1499 	if (wpa_s->wps_er == NULL)
   1500 		return -1;
   1501 	return 0;
   1502 #else /* CONFIG_WPS_ER */
   1503 	return 0;
   1504 #endif /* CONFIG_WPS_ER */
   1505 }
   1506 
   1507 
   1508 int wpas_wps_er_stop(struct wpa_supplicant *wpa_s)
   1509 {
   1510 #ifdef CONFIG_WPS_ER
   1511 	wps_er_deinit(wpa_s->wps_er, NULL, NULL);
   1512 	wpa_s->wps_er = NULL;
   1513 #endif /* CONFIG_WPS_ER */
   1514 	return 0;
   1515 }
   1516 
   1517 
   1518 #ifdef CONFIG_WPS_ER
   1519 int wpas_wps_er_add_pin(struct wpa_supplicant *wpa_s, const u8 *addr,
   1520 			const char *uuid, const char *pin)
   1521 {
   1522 	u8 u[UUID_LEN];
   1523 	int any = 0;
   1524 
   1525 	if (os_strcmp(uuid, "any") == 0)
   1526 		any = 1;
   1527 	else if (uuid_str2bin(uuid, u))
   1528 		return -1;
   1529 	return wps_registrar_add_pin(wpa_s->wps->registrar, addr,
   1530 				     any ? NULL : u,
   1531 				     (const u8 *) pin, os_strlen(pin), 300);
   1532 }
   1533 
   1534 
   1535 int wpas_wps_er_pbc(struct wpa_supplicant *wpa_s, const char *uuid)
   1536 {
   1537 	u8 u[UUID_LEN];
   1538 
   1539 	if (uuid_str2bin(uuid, u))
   1540 		return -1;
   1541 	return wps_er_pbc(wpa_s->wps_er, u);
   1542 }
   1543 
   1544 
   1545 int wpas_wps_er_learn(struct wpa_supplicant *wpa_s, const char *uuid,
   1546 		      const char *pin)
   1547 {
   1548 	u8 u[UUID_LEN];
   1549 
   1550 	if (uuid_str2bin(uuid, u))
   1551 		return -1;
   1552 	return wps_er_learn(wpa_s->wps_er, u, (const u8 *) pin,
   1553 			    os_strlen(pin));
   1554 }
   1555 
   1556 
   1557 int wpas_wps_er_set_config(struct wpa_supplicant *wpa_s, const char *uuid,
   1558 			   int id)
   1559 {
   1560 	u8 u[UUID_LEN];
   1561 	struct wpa_ssid *ssid;
   1562 	struct wps_credential cred;
   1563 
   1564 	if (uuid_str2bin(uuid, u))
   1565 		return -1;
   1566 	ssid = wpa_config_get_network(wpa_s->conf, id);
   1567 	if (ssid == NULL || ssid->ssid == NULL)
   1568 		return -1;
   1569 
   1570 	os_memset(&cred, 0, sizeof(cred));
   1571 	if (ssid->ssid_len > 32)
   1572 		return -1;
   1573 	os_memcpy(cred.ssid, ssid->ssid, ssid->ssid_len);
   1574 	cred.ssid_len = ssid->ssid_len;
   1575 	if (ssid->key_mgmt & WPA_KEY_MGMT_PSK) {
   1576 		cred.auth_type = (ssid->proto & WPA_PROTO_RSN) ?
   1577 			WPS_AUTH_WPA2PSK : WPS_AUTH_WPAPSK;
   1578 		if (ssid->pairwise_cipher & WPA_CIPHER_CCMP)
   1579 			cred.encr_type = WPS_ENCR_AES;
   1580 		else
   1581 			cred.encr_type = WPS_ENCR_TKIP;
   1582 		if (ssid->passphrase) {
   1583 			cred.key_len = os_strlen(ssid->passphrase);
   1584 			if (cred.key_len >= 64)
   1585 				return -1;
   1586 			os_memcpy(cred.key, ssid->passphrase, cred.key_len);
   1587 		} else if (ssid->psk_set) {
   1588 			cred.key_len = 32;
   1589 			os_memcpy(cred.key, ssid->psk, 32);
   1590 		} else
   1591 			return -1;
   1592 	} else {
   1593 		cred.auth_type = WPS_AUTH_OPEN;
   1594 		cred.encr_type = WPS_ENCR_NONE;
   1595 	}
   1596 	return wps_er_set_config(wpa_s->wps_er, u, &cred);
   1597 }
   1598 
   1599 
   1600 int wpas_wps_er_config(struct wpa_supplicant *wpa_s, const char *uuid,
   1601 		       const char *pin, struct wps_new_ap_settings *settings)
   1602 {
   1603 	u8 u[UUID_LEN];
   1604 	struct wps_credential cred;
   1605 	size_t len;
   1606 
   1607 	if (uuid_str2bin(uuid, u))
   1608 		return -1;
   1609 	if (settings->ssid_hex == NULL || settings->auth == NULL ||
   1610 	    settings->encr == NULL || settings->key_hex == NULL)
   1611 		return -1;
   1612 
   1613 	os_memset(&cred, 0, sizeof(cred));
   1614 	len = os_strlen(settings->ssid_hex);
   1615 	if ((len & 1) || len > 2 * sizeof(cred.ssid) ||
   1616 	    hexstr2bin(settings->ssid_hex, cred.ssid, len / 2))
   1617 		return -1;
   1618 	cred.ssid_len = len / 2;
   1619 
   1620 	len = os_strlen(settings->key_hex);
   1621 	if ((len & 1) || len > 2 * sizeof(cred.key) ||
   1622 	    hexstr2bin(settings->key_hex, cred.key, len / 2))
   1623 		return -1;
   1624 	cred.key_len = len / 2;
   1625 
   1626 	if (os_strcmp(settings->auth, "OPEN") == 0)
   1627 		cred.auth_type = WPS_AUTH_OPEN;
   1628 	else if (os_strcmp(settings->auth, "WPAPSK") == 0)
   1629 		cred.auth_type = WPS_AUTH_WPAPSK;
   1630 	else if (os_strcmp(settings->auth, "WPA2PSK") == 0)
   1631 		cred.auth_type = WPS_AUTH_WPA2PSK;
   1632 	else
   1633 		return -1;
   1634 
   1635 	if (os_strcmp(settings->encr, "NONE") == 0)
   1636 		cred.encr_type = WPS_ENCR_NONE;
   1637 	else if (os_strcmp(settings->encr, "WEP") == 0)
   1638 		cred.encr_type = WPS_ENCR_WEP;
   1639 	else if (os_strcmp(settings->encr, "TKIP") == 0)
   1640 		cred.encr_type = WPS_ENCR_TKIP;
   1641 	else if (os_strcmp(settings->encr, "CCMP") == 0)
   1642 		cred.encr_type = WPS_ENCR_AES;
   1643 	else
   1644 		return -1;
   1645 
   1646 	return wps_er_config(wpa_s->wps_er, u, (const u8 *) pin,
   1647 			     os_strlen(pin), &cred);
   1648 }
   1649 
   1650 
   1651 static int callbacks_pending = 0;
   1652 
   1653 static void wpas_wps_terminate_cb(void *ctx)
   1654 {
   1655 	wpa_printf(MSG_DEBUG, "WPS ER: Terminated");
   1656 	if (--callbacks_pending <= 0)
   1657 		eloop_terminate();
   1658 }
   1659 #endif /* CONFIG_WPS_ER */
   1660 
   1661 
   1662 int wpas_wps_terminate_pending(struct wpa_supplicant *wpa_s)
   1663 {
   1664 #ifdef CONFIG_WPS_ER
   1665 	if (wpa_s->wps_er) {
   1666 		callbacks_pending++;
   1667 		wps_er_deinit(wpa_s->wps_er, wpas_wps_terminate_cb, wpa_s);
   1668 		wpa_s->wps_er = NULL;
   1669 		return 1;
   1670 	}
   1671 #endif /* CONFIG_WPS_ER */
   1672 	return 0;
   1673 }
   1674 
   1675 
   1676 int wpas_wps_in_progress(struct wpa_supplicant *wpa_s)
   1677 {
   1678 	struct wpa_ssid *ssid;
   1679 
   1680 	for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
   1681 		if (!ssid->disabled && ssid->key_mgmt == WPA_KEY_MGMT_WPS)
   1682 			return 1;
   1683 	}
   1684 
   1685 	return 0;
   1686 }
   1687 
   1688 
   1689 void wpas_wps_update_config(struct wpa_supplicant *wpa_s)
   1690 {
   1691 	struct wps_context *wps = wpa_s->wps;
   1692 
   1693 	if (wps == NULL)
   1694 		return;
   1695 
   1696 	if (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS) {
   1697 		wps->config_methods = wps_config_methods_str2bin(
   1698 			wpa_s->conf->config_methods);
   1699 		if ((wps->config_methods &
   1700 		     (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) ==
   1701 		    (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
   1702 			wpa_printf(MSG_ERROR, "WPS: Both Label and Display "
   1703 				   "config methods are not allowed at the "
   1704 				   "same time");
   1705 			wps->config_methods &= ~WPS_CONFIG_LABEL;
   1706 		}
   1707 	}
   1708 	wps->config_methods = wps_fix_config_methods(wps->config_methods);
   1709 
   1710 	if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
   1711 		os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type,
   1712 			  WPS_DEV_TYPE_LEN);
   1713 
   1714 	if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE) {
   1715 		wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
   1716 		os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type,
   1717 			  wps->dev.num_sec_dev_types * WPS_DEV_TYPE_LEN);
   1718 	}
   1719 
   1720 	if (wpa_s->conf->changed_parameters & CFG_CHANGED_OS_VERSION)
   1721 		wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
   1722 
   1723 	if (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID)
   1724 		wpas_wps_set_uuid(wpa_s, wps);
   1725 
   1726 	if (wpa_s->conf->changed_parameters &
   1727 	    (CFG_CHANGED_DEVICE_NAME | CFG_CHANGED_WPS_STRING)) {
   1728 		/* Update pointers to make sure they refer current values */
   1729 		wps->dev.device_name = wpa_s->conf->device_name;
   1730 		wps->dev.manufacturer = wpa_s->conf->manufacturer;
   1731 		wps->dev.model_name = wpa_s->conf->model_name;
   1732 		wps->dev.model_number = wpa_s->conf->model_number;
   1733 		wps->dev.serial_number = wpa_s->conf->serial_number;
   1734 	}
   1735 }
   1736