wps_supplicant.c 55 KB

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  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. #include "includes.h"
  9. #include "common.h"
  10. #include "eloop.h"
  11. #include "uuid.h"
  12. #include "crypto/random.h"
  13. #include "crypto/dh_group5.h"
  14. #include "common/ieee802_11_defs.h"
  15. #include "common/ieee802_11_common.h"
  16. #include "common/wpa_common.h"
  17. #include "common/wpa_ctrl.h"
  18. #include "eap_common/eap_wsc_common.h"
  19. #include "eap_peer/eap.h"
  20. #include "eapol_supp/eapol_supp_sm.h"
  21. #include "rsn_supp/wpa.h"
  22. #include "wps/wps_attr_parse.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. #ifndef WPS_PIN_SCAN_IGNORE_SEL_REG
  35. #define WPS_PIN_SCAN_IGNORE_SEL_REG 3
  36. #endif /* WPS_PIN_SCAN_IGNORE_SEL_REG */
  37. static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx);
  38. static void wpas_clear_wps(struct wpa_supplicant *wpa_s);
  39. static void wpas_wps_clear_ap_info(struct wpa_supplicant *wpa_s)
  40. {
  41. os_free(wpa_s->wps_ap);
  42. wpa_s->wps_ap = NULL;
  43. wpa_s->num_wps_ap = 0;
  44. wpa_s->wps_ap_iter = 0;
  45. }
  46. int wpas_wps_eapol_cb(struct wpa_supplicant *wpa_s)
  47. {
  48. if (!wpa_s->wps_success &&
  49. wpa_s->current_ssid &&
  50. eap_is_wps_pin_enrollee(&wpa_s->current_ssid->eap)) {
  51. const u8 *bssid = wpa_s->bssid;
  52. if (is_zero_ether_addr(bssid))
  53. bssid = wpa_s->pending_bssid;
  54. wpa_printf(MSG_DEBUG, "WPS: PIN registration with " MACSTR
  55. " did not succeed - continue trying to find "
  56. "suitable AP", MAC2STR(bssid));
  57. wpa_blacklist_add(wpa_s, bssid);
  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. wpas_wps_clear_ap_info(wpa_s);
  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. if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && wpa_s->current_ssid &&
  71. !(wpa_s->current_ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
  72. int disabled = wpa_s->current_ssid->disabled;
  73. unsigned int freq = wpa_s->assoc_freq;
  74. wpa_printf(MSG_DEBUG, "WPS: Network configuration replaced - "
  75. "try to associate with the received credential "
  76. "(freq=%u)", freq);
  77. wpa_supplicant_deauthenticate(wpa_s,
  78. WLAN_REASON_DEAUTH_LEAVING);
  79. if (disabled) {
  80. wpa_printf(MSG_DEBUG, "WPS: Current network is "
  81. "disabled - wait for user to enable");
  82. return 1;
  83. }
  84. wpa_s->after_wps = 5;
  85. wpa_s->wps_freq = freq;
  86. wpa_s->normal_scans = 0;
  87. wpa_s->reassociate = 1;
  88. wpa_supplicant_req_scan(wpa_s, 0, 0);
  89. return 1;
  90. }
  91. if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && wpa_s->current_ssid) {
  92. wpa_printf(MSG_DEBUG, "WPS: Registration completed - waiting "
  93. "for external credential processing");
  94. wpas_clear_wps(wpa_s);
  95. wpa_supplicant_deauthenticate(wpa_s,
  96. WLAN_REASON_DEAUTH_LEAVING);
  97. return 1;
  98. }
  99. return 0;
  100. }
  101. static void wpas_wps_security_workaround(struct wpa_supplicant *wpa_s,
  102. struct wpa_ssid *ssid,
  103. const struct wps_credential *cred)
  104. {
  105. struct wpa_driver_capa capa;
  106. struct wpa_bss *bss;
  107. const u8 *ie;
  108. struct wpa_ie_data adv;
  109. int wpa2 = 0, ccmp = 0;
  110. /*
  111. * Many existing WPS APs do not know how to negotiate WPA2 or CCMP in
  112. * case they are configured for mixed mode operation (WPA+WPA2 and
  113. * TKIP+CCMP). Try to use scan results to figure out whether the AP
  114. * actually supports stronger security and select that if the client
  115. * has support for it, too.
  116. */
  117. if (wpa_drv_get_capa(wpa_s, &capa))
  118. return; /* Unknown what driver supports */
  119. if (ssid->ssid == NULL)
  120. return;
  121. bss = wpa_bss_get(wpa_s, cred->mac_addr, ssid->ssid, ssid->ssid_len);
  122. if (bss == NULL) {
  123. wpa_printf(MSG_DEBUG, "WPS: The AP was not found from BSS "
  124. "table - use credential as-is");
  125. return;
  126. }
  127. wpa_printf(MSG_DEBUG, "WPS: AP found from BSS table");
  128. ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
  129. if (ie && wpa_parse_wpa_ie(ie, 2 + ie[1], &adv) == 0) {
  130. wpa2 = 1;
  131. if (adv.pairwise_cipher & WPA_CIPHER_CCMP)
  132. ccmp = 1;
  133. } else {
  134. ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
  135. if (ie && wpa_parse_wpa_ie(ie, 2 + ie[1], &adv) == 0 &&
  136. adv.pairwise_cipher & WPA_CIPHER_CCMP)
  137. ccmp = 1;
  138. }
  139. if (ie == NULL && (ssid->proto & WPA_PROTO_WPA) &&
  140. (ssid->pairwise_cipher & WPA_CIPHER_TKIP)) {
  141. /*
  142. * TODO: This could be the initial AP configuration and the
  143. * Beacon contents could change shortly. Should request a new
  144. * scan and delay addition of the network until the updated
  145. * scan results are available.
  146. */
  147. wpa_printf(MSG_DEBUG, "WPS: The AP did not yet advertise WPA "
  148. "support - use credential as-is");
  149. return;
  150. }
  151. if (ccmp && !(ssid->pairwise_cipher & WPA_CIPHER_CCMP) &&
  152. (ssid->pairwise_cipher & WPA_CIPHER_TKIP) &&
  153. (capa.key_mgmt & WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK)) {
  154. wpa_printf(MSG_DEBUG, "WPS: Add CCMP into the credential "
  155. "based on scan results");
  156. if (wpa_s->conf->ap_scan == 1)
  157. ssid->pairwise_cipher |= WPA_CIPHER_CCMP;
  158. else
  159. ssid->pairwise_cipher = WPA_CIPHER_CCMP;
  160. }
  161. if (wpa2 && !(ssid->proto & WPA_PROTO_RSN) &&
  162. (ssid->proto & WPA_PROTO_WPA) &&
  163. (capa.enc & WPA_DRIVER_CAPA_ENC_CCMP)) {
  164. wpa_printf(MSG_DEBUG, "WPS: Add WPA2 into the credential "
  165. "based on scan results");
  166. if (wpa_s->conf->ap_scan == 1)
  167. ssid->proto |= WPA_PROTO_RSN;
  168. else
  169. ssid->proto = WPA_PROTO_RSN;
  170. }
  171. }
  172. static int wpa_supplicant_wps_cred(void *ctx,
  173. const struct wps_credential *cred)
  174. {
  175. struct wpa_supplicant *wpa_s = ctx;
  176. struct wpa_ssid *ssid = wpa_s->current_ssid;
  177. u8 key_idx = 0;
  178. u16 auth_type;
  179. #ifdef CONFIG_WPS_REG_DISABLE_OPEN
  180. int registrar = 0;
  181. #endif /* CONFIG_WPS_REG_DISABLE_OPEN */
  182. if ((wpa_s->conf->wps_cred_processing == 1 ||
  183. wpa_s->conf->wps_cred_processing == 2) && cred->cred_attr) {
  184. size_t blen = cred->cred_attr_len * 2 + 1;
  185. char *buf = os_malloc(blen);
  186. if (buf) {
  187. wpa_snprintf_hex(buf, blen,
  188. cred->cred_attr, cred->cred_attr_len);
  189. wpa_msg(wpa_s, MSG_INFO, "%s%s",
  190. WPS_EVENT_CRED_RECEIVED, buf);
  191. os_free(buf);
  192. }
  193. wpas_notify_wps_credential(wpa_s, cred);
  194. } else
  195. wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_CRED_RECEIVED);
  196. wpa_hexdump_key(MSG_DEBUG, "WPS: Received Credential attribute",
  197. cred->cred_attr, cred->cred_attr_len);
  198. if (wpa_s->conf->wps_cred_processing == 1)
  199. return 0;
  200. wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID", cred->ssid, cred->ssid_len);
  201. wpa_printf(MSG_DEBUG, "WPS: Authentication Type 0x%x",
  202. cred->auth_type);
  203. wpa_printf(MSG_DEBUG, "WPS: Encryption Type 0x%x", cred->encr_type);
  204. wpa_printf(MSG_DEBUG, "WPS: Network Key Index %d", cred->key_idx);
  205. wpa_hexdump_key(MSG_DEBUG, "WPS: Network Key",
  206. cred->key, cred->key_len);
  207. wpa_printf(MSG_DEBUG, "WPS: MAC Address " MACSTR,
  208. MAC2STR(cred->mac_addr));
  209. auth_type = cred->auth_type;
  210. if (auth_type == (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) {
  211. wpa_printf(MSG_DEBUG, "WPS: Workaround - convert mixed-mode "
  212. "auth_type into WPA2PSK");
  213. auth_type = WPS_AUTH_WPA2PSK;
  214. }
  215. if (auth_type != WPS_AUTH_OPEN &&
  216. auth_type != WPS_AUTH_SHARED &&
  217. auth_type != WPS_AUTH_WPAPSK &&
  218. auth_type != WPS_AUTH_WPA2PSK) {
  219. wpa_printf(MSG_DEBUG, "WPS: Ignored credentials for "
  220. "unsupported authentication type 0x%x",
  221. auth_type);
  222. return 0;
  223. }
  224. if (ssid && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
  225. wpa_printf(MSG_DEBUG, "WPS: Replace WPS network block based "
  226. "on the received credential");
  227. #ifdef CONFIG_WPS_REG_DISABLE_OPEN
  228. if (ssid->eap.identity &&
  229. ssid->eap.identity_len == WSC_ID_REGISTRAR_LEN &&
  230. os_memcmp(ssid->eap.identity, WSC_ID_REGISTRAR,
  231. WSC_ID_REGISTRAR_LEN) == 0)
  232. registrar = 1;
  233. #endif /* CONFIG_WPS_REG_DISABLE_OPEN */
  234. os_free(ssid->eap.identity);
  235. ssid->eap.identity = NULL;
  236. ssid->eap.identity_len = 0;
  237. os_free(ssid->eap.phase1);
  238. ssid->eap.phase1 = NULL;
  239. os_free(ssid->eap.eap_methods);
  240. ssid->eap.eap_methods = NULL;
  241. if (!ssid->p2p_group) {
  242. ssid->temporary = 0;
  243. ssid->bssid_set = 0;
  244. }
  245. ssid->disabled_until.sec = 0;
  246. ssid->disabled_until.usec = 0;
  247. ssid->auth_failures = 0;
  248. } else {
  249. wpa_printf(MSG_DEBUG, "WPS: Create a new network based on the "
  250. "received credential");
  251. ssid = wpa_config_add_network(wpa_s->conf);
  252. if (ssid == NULL)
  253. return -1;
  254. wpas_notify_network_added(wpa_s, ssid);
  255. }
  256. wpa_config_set_network_defaults(ssid);
  257. os_free(ssid->ssid);
  258. ssid->ssid = os_malloc(cred->ssid_len);
  259. if (ssid->ssid) {
  260. os_memcpy(ssid->ssid, cred->ssid, cred->ssid_len);
  261. ssid->ssid_len = cred->ssid_len;
  262. }
  263. switch (cred->encr_type) {
  264. case WPS_ENCR_NONE:
  265. break;
  266. case WPS_ENCR_WEP:
  267. if (cred->key_len <= 0)
  268. break;
  269. if (cred->key_len != 5 && cred->key_len != 13 &&
  270. cred->key_len != 10 && cred->key_len != 26) {
  271. wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key length "
  272. "%lu", (unsigned long) cred->key_len);
  273. return -1;
  274. }
  275. if (cred->key_idx > NUM_WEP_KEYS) {
  276. wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key index %d",
  277. cred->key_idx);
  278. return -1;
  279. }
  280. if (cred->key_idx)
  281. key_idx = cred->key_idx - 1;
  282. if (cred->key_len == 10 || cred->key_len == 26) {
  283. if (hexstr2bin((char *) cred->key,
  284. ssid->wep_key[key_idx],
  285. cred->key_len / 2) < 0) {
  286. wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key "
  287. "%d", key_idx);
  288. return -1;
  289. }
  290. ssid->wep_key_len[key_idx] = cred->key_len / 2;
  291. } else {
  292. os_memcpy(ssid->wep_key[key_idx], cred->key,
  293. cred->key_len);
  294. ssid->wep_key_len[key_idx] = cred->key_len;
  295. }
  296. ssid->wep_tx_keyidx = key_idx;
  297. break;
  298. case WPS_ENCR_TKIP:
  299. ssid->pairwise_cipher = WPA_CIPHER_TKIP;
  300. break;
  301. case WPS_ENCR_AES:
  302. ssid->pairwise_cipher = WPA_CIPHER_CCMP;
  303. break;
  304. }
  305. switch (auth_type) {
  306. case WPS_AUTH_OPEN:
  307. ssid->auth_alg = WPA_AUTH_ALG_OPEN;
  308. ssid->key_mgmt = WPA_KEY_MGMT_NONE;
  309. ssid->proto = 0;
  310. #ifdef CONFIG_WPS_REG_DISABLE_OPEN
  311. if (registrar) {
  312. wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OPEN_NETWORK
  313. "id=%d - Credentials for an open "
  314. "network disabled by default - use "
  315. "'select_network %d' to enable",
  316. ssid->id, ssid->id);
  317. ssid->disabled = 1;
  318. }
  319. #endif /* CONFIG_WPS_REG_DISABLE_OPEN */
  320. break;
  321. case WPS_AUTH_SHARED:
  322. ssid->auth_alg = WPA_AUTH_ALG_SHARED;
  323. ssid->key_mgmt = WPA_KEY_MGMT_NONE;
  324. ssid->proto = 0;
  325. break;
  326. case WPS_AUTH_WPAPSK:
  327. ssid->auth_alg = WPA_AUTH_ALG_OPEN;
  328. ssid->key_mgmt = WPA_KEY_MGMT_PSK;
  329. ssid->proto = WPA_PROTO_WPA;
  330. break;
  331. case WPS_AUTH_WPA2PSK:
  332. ssid->auth_alg = WPA_AUTH_ALG_OPEN;
  333. ssid->key_mgmt = WPA_KEY_MGMT_PSK;
  334. ssid->proto = WPA_PROTO_RSN;
  335. break;
  336. }
  337. if (ssid->key_mgmt == WPA_KEY_MGMT_PSK) {
  338. if (cred->key_len == 2 * PMK_LEN) {
  339. if (hexstr2bin((const char *) cred->key, ssid->psk,
  340. PMK_LEN)) {
  341. wpa_printf(MSG_ERROR, "WPS: Invalid Network "
  342. "Key");
  343. return -1;
  344. }
  345. ssid->psk_set = 1;
  346. ssid->export_keys = 1;
  347. } else if (cred->key_len >= 8 && cred->key_len < 2 * PMK_LEN) {
  348. os_free(ssid->passphrase);
  349. ssid->passphrase = os_malloc(cred->key_len + 1);
  350. if (ssid->passphrase == NULL)
  351. return -1;
  352. os_memcpy(ssid->passphrase, cred->key, cred->key_len);
  353. ssid->passphrase[cred->key_len] = '\0';
  354. wpa_config_update_psk(ssid);
  355. ssid->export_keys = 1;
  356. } else {
  357. wpa_printf(MSG_ERROR, "WPS: Invalid Network Key "
  358. "length %lu",
  359. (unsigned long) cred->key_len);
  360. return -1;
  361. }
  362. }
  363. wpas_wps_security_workaround(wpa_s, ssid, cred);
  364. #ifndef CONFIG_NO_CONFIG_WRITE
  365. if (wpa_s->conf->update_config &&
  366. wpa_config_write(wpa_s->confname, wpa_s->conf)) {
  367. wpa_printf(MSG_DEBUG, "WPS: Failed to update configuration");
  368. return -1;
  369. }
  370. #endif /* CONFIG_NO_CONFIG_WRITE */
  371. return 0;
  372. }
  373. #ifdef CONFIG_P2P
  374. static void wpas_wps_pbc_overlap_cb(void *eloop_ctx, void *timeout_ctx)
  375. {
  376. struct wpa_supplicant *wpa_s = eloop_ctx;
  377. wpas_p2p_notif_pbc_overlap(wpa_s);
  378. }
  379. #endif /* CONFIG_P2P */
  380. static void wpa_supplicant_wps_event_m2d(struct wpa_supplicant *wpa_s,
  381. struct wps_event_m2d *m2d)
  382. {
  383. wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_M2D
  384. "dev_password_id=%d config_error=%d",
  385. m2d->dev_password_id, m2d->config_error);
  386. wpas_notify_wps_event_m2d(wpa_s, m2d);
  387. #ifdef CONFIG_P2P
  388. if (wpa_s->parent && wpa_s->parent != wpa_s) {
  389. wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_M2D
  390. "dev_password_id=%d config_error=%d",
  391. m2d->dev_password_id, m2d->config_error);
  392. }
  393. if (m2d->config_error == WPS_CFG_MULTIPLE_PBC_DETECTED) {
  394. /*
  395. * Notify P2P from eloop timeout to avoid issues with the
  396. * interface getting removed while processing a message.
  397. */
  398. eloop_register_timeout(0, 0, wpas_wps_pbc_overlap_cb, wpa_s,
  399. NULL);
  400. }
  401. #endif /* CONFIG_P2P */
  402. }
  403. static const char * wps_event_fail_reason[NUM_WPS_EI_VALUES] = {
  404. "No Error", /* WPS_EI_NO_ERROR */
  405. "TKIP Only Prohibited", /* WPS_EI_SECURITY_TKIP_ONLY_PROHIBITED */
  406. "WEP Prohibited" /* WPS_EI_SECURITY_WEP_PROHIBITED */
  407. };
  408. static void wpa_supplicant_wps_event_fail(struct wpa_supplicant *wpa_s,
  409. struct wps_event_fail *fail)
  410. {
  411. if (fail->error_indication > 0 &&
  412. fail->error_indication < NUM_WPS_EI_VALUES) {
  413. wpa_msg(wpa_s, MSG_INFO,
  414. WPS_EVENT_FAIL "msg=%d config_error=%d reason=%d (%s)",
  415. fail->msg, fail->config_error, fail->error_indication,
  416. wps_event_fail_reason[fail->error_indication]);
  417. if (wpa_s->parent && wpa_s->parent != wpa_s)
  418. wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_FAIL
  419. "msg=%d config_error=%d reason=%d (%s)",
  420. fail->msg, fail->config_error,
  421. fail->error_indication,
  422. wps_event_fail_reason[fail->error_indication]);
  423. } else {
  424. wpa_msg(wpa_s, MSG_INFO,
  425. WPS_EVENT_FAIL "msg=%d config_error=%d",
  426. fail->msg, fail->config_error);
  427. if (wpa_s->parent && wpa_s->parent != wpa_s)
  428. wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_FAIL
  429. "msg=%d config_error=%d",
  430. fail->msg, fail->config_error);
  431. }
  432. wpas_clear_wps(wpa_s);
  433. wpas_notify_wps_event_fail(wpa_s, fail);
  434. #ifdef CONFIG_P2P
  435. wpas_p2p_wps_failed(wpa_s, fail);
  436. #endif /* CONFIG_P2P */
  437. }
  438. static void wpa_supplicant_wps_event_success(struct wpa_supplicant *wpa_s)
  439. {
  440. wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_SUCCESS);
  441. wpa_s->wps_success = 1;
  442. wpas_notify_wps_event_success(wpa_s);
  443. #ifdef CONFIG_P2P
  444. wpas_p2p_wps_success(wpa_s, wpa_s->bssid, 0);
  445. #endif /* CONFIG_P2P */
  446. }
  447. static void wpa_supplicant_wps_event_er_ap_add(struct wpa_supplicant *wpa_s,
  448. struct wps_event_er_ap *ap)
  449. {
  450. char uuid_str[100];
  451. char dev_type[WPS_DEV_TYPE_BUFSIZE];
  452. uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str));
  453. if (ap->pri_dev_type)
  454. wps_dev_type_bin2str(ap->pri_dev_type, dev_type,
  455. sizeof(dev_type));
  456. else
  457. dev_type[0] = '\0';
  458. wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_ADD "%s " MACSTR
  459. " pri_dev_type=%s wps_state=%d |%s|%s|%s|%s|%s|%s|",
  460. uuid_str, MAC2STR(ap->mac_addr), dev_type, ap->wps_state,
  461. ap->friendly_name ? ap->friendly_name : "",
  462. ap->manufacturer ? ap->manufacturer : "",
  463. ap->model_description ? ap->model_description : "",
  464. ap->model_name ? ap->model_name : "",
  465. ap->manufacturer_url ? ap->manufacturer_url : "",
  466. ap->model_url ? ap->model_url : "");
  467. }
  468. static void wpa_supplicant_wps_event_er_ap_remove(struct wpa_supplicant *wpa_s,
  469. struct wps_event_er_ap *ap)
  470. {
  471. char uuid_str[100];
  472. uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str));
  473. wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_REMOVE "%s", uuid_str);
  474. }
  475. static void wpa_supplicant_wps_event_er_enrollee_add(
  476. struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee)
  477. {
  478. char uuid_str[100];
  479. char dev_type[WPS_DEV_TYPE_BUFSIZE];
  480. uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str));
  481. if (enrollee->pri_dev_type)
  482. wps_dev_type_bin2str(enrollee->pri_dev_type, dev_type,
  483. sizeof(dev_type));
  484. else
  485. dev_type[0] = '\0';
  486. wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_ADD "%s " MACSTR
  487. " M1=%d config_methods=0x%x dev_passwd_id=%d pri_dev_type=%s "
  488. "|%s|%s|%s|%s|%s|",
  489. uuid_str, MAC2STR(enrollee->mac_addr), enrollee->m1_received,
  490. enrollee->config_methods, enrollee->dev_passwd_id, dev_type,
  491. enrollee->dev_name ? enrollee->dev_name : "",
  492. enrollee->manufacturer ? enrollee->manufacturer : "",
  493. enrollee->model_name ? enrollee->model_name : "",
  494. enrollee->model_number ? enrollee->model_number : "",
  495. enrollee->serial_number ? enrollee->serial_number : "");
  496. }
  497. static void wpa_supplicant_wps_event_er_enrollee_remove(
  498. struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee)
  499. {
  500. char uuid_str[100];
  501. uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str));
  502. wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_REMOVE "%s " MACSTR,
  503. uuid_str, MAC2STR(enrollee->mac_addr));
  504. }
  505. static void wpa_supplicant_wps_event_er_ap_settings(
  506. struct wpa_supplicant *wpa_s,
  507. struct wps_event_er_ap_settings *ap_settings)
  508. {
  509. char uuid_str[100];
  510. char key_str[65];
  511. const struct wps_credential *cred = ap_settings->cred;
  512. key_str[0] = '\0';
  513. if (cred->auth_type & (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) {
  514. if (cred->key_len >= 8 && cred->key_len <= 64) {
  515. os_memcpy(key_str, cred->key, cred->key_len);
  516. key_str[cred->key_len] = '\0';
  517. }
  518. }
  519. uuid_bin2str(ap_settings->uuid, uuid_str, sizeof(uuid_str));
  520. /* Use wpa_msg_ctrl to avoid showing the key in debug log */
  521. wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_SETTINGS
  522. "uuid=%s ssid=%s auth_type=0x%04x encr_type=0x%04x "
  523. "key=%s",
  524. uuid_str, wpa_ssid_txt(cred->ssid, cred->ssid_len),
  525. cred->auth_type, cred->encr_type, key_str);
  526. }
  527. static void wpa_supplicant_wps_event_er_set_sel_reg(
  528. struct wpa_supplicant *wpa_s,
  529. struct wps_event_er_set_selected_registrar *ev)
  530. {
  531. char uuid_str[100];
  532. uuid_bin2str(ev->uuid, uuid_str, sizeof(uuid_str));
  533. switch (ev->state) {
  534. case WPS_ER_SET_SEL_REG_START:
  535. wpa_msg(wpa_s, MSG_DEBUG, WPS_EVENT_ER_SET_SEL_REG
  536. "uuid=%s state=START sel_reg=%d dev_passwd_id=%u "
  537. "sel_reg_config_methods=0x%x",
  538. uuid_str, ev->sel_reg, ev->dev_passwd_id,
  539. ev->sel_reg_config_methods);
  540. break;
  541. case WPS_ER_SET_SEL_REG_DONE:
  542. wpa_msg(wpa_s, MSG_DEBUG, WPS_EVENT_ER_SET_SEL_REG
  543. "uuid=%s state=DONE", uuid_str);
  544. break;
  545. case WPS_ER_SET_SEL_REG_FAILED:
  546. wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_SET_SEL_REG
  547. "uuid=%s state=FAILED", uuid_str);
  548. break;
  549. }
  550. }
  551. static void wpa_supplicant_wps_event(void *ctx, enum wps_event event,
  552. union wps_event_data *data)
  553. {
  554. struct wpa_supplicant *wpa_s = ctx;
  555. switch (event) {
  556. case WPS_EV_M2D:
  557. wpa_supplicant_wps_event_m2d(wpa_s, &data->m2d);
  558. break;
  559. case WPS_EV_FAIL:
  560. wpa_supplicant_wps_event_fail(wpa_s, &data->fail);
  561. break;
  562. case WPS_EV_SUCCESS:
  563. wpa_supplicant_wps_event_success(wpa_s);
  564. break;
  565. case WPS_EV_PWD_AUTH_FAIL:
  566. #ifdef CONFIG_AP
  567. if (wpa_s->ap_iface && data->pwd_auth_fail.enrollee)
  568. wpa_supplicant_ap_pwd_auth_fail(wpa_s);
  569. #endif /* CONFIG_AP */
  570. break;
  571. case WPS_EV_PBC_OVERLAP:
  572. break;
  573. case WPS_EV_PBC_TIMEOUT:
  574. break;
  575. case WPS_EV_ER_AP_ADD:
  576. wpa_supplicant_wps_event_er_ap_add(wpa_s, &data->ap);
  577. break;
  578. case WPS_EV_ER_AP_REMOVE:
  579. wpa_supplicant_wps_event_er_ap_remove(wpa_s, &data->ap);
  580. break;
  581. case WPS_EV_ER_ENROLLEE_ADD:
  582. wpa_supplicant_wps_event_er_enrollee_add(wpa_s,
  583. &data->enrollee);
  584. break;
  585. case WPS_EV_ER_ENROLLEE_REMOVE:
  586. wpa_supplicant_wps_event_er_enrollee_remove(wpa_s,
  587. &data->enrollee);
  588. break;
  589. case WPS_EV_ER_AP_SETTINGS:
  590. wpa_supplicant_wps_event_er_ap_settings(wpa_s,
  591. &data->ap_settings);
  592. break;
  593. case WPS_EV_ER_SET_SELECTED_REGISTRAR:
  594. wpa_supplicant_wps_event_er_set_sel_reg(wpa_s,
  595. &data->set_sel_reg);
  596. break;
  597. case WPS_EV_AP_PIN_SUCCESS:
  598. break;
  599. }
  600. }
  601. enum wps_request_type wpas_wps_get_req_type(struct wpa_ssid *ssid)
  602. {
  603. if (eap_is_wps_pbc_enrollee(&ssid->eap) ||
  604. eap_is_wps_pin_enrollee(&ssid->eap))
  605. return WPS_REQ_ENROLLEE;
  606. else
  607. return WPS_REQ_REGISTRAR;
  608. }
  609. static void wpas_clear_wps(struct wpa_supplicant *wpa_s)
  610. {
  611. int id;
  612. struct wpa_ssid *ssid, *remove_ssid = NULL, *prev_current;
  613. prev_current = wpa_s->current_ssid;
  614. eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
  615. /* Remove any existing WPS network from configuration */
  616. ssid = wpa_s->conf->ssid;
  617. while (ssid) {
  618. if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
  619. if (ssid == wpa_s->current_ssid) {
  620. wpa_s->current_ssid = NULL;
  621. if (ssid != NULL)
  622. wpas_notify_network_changed(wpa_s);
  623. }
  624. id = ssid->id;
  625. remove_ssid = ssid;
  626. } else
  627. id = -1;
  628. ssid = ssid->next;
  629. if (id >= 0) {
  630. if (prev_current == remove_ssid) {
  631. wpa_sm_set_config(wpa_s->wpa, NULL);
  632. eapol_sm_notify_config(wpa_s->eapol, NULL,
  633. NULL);
  634. }
  635. wpas_notify_network_removed(wpa_s, remove_ssid);
  636. wpa_config_remove_network(wpa_s->conf, id);
  637. }
  638. }
  639. wpas_wps_clear_ap_info(wpa_s);
  640. }
  641. static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx)
  642. {
  643. struct wpa_supplicant *wpa_s = eloop_ctx;
  644. wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_TIMEOUT "Requested operation timed "
  645. "out");
  646. wpas_clear_wps(wpa_s);
  647. }
  648. static struct wpa_ssid * wpas_wps_add_network(struct wpa_supplicant *wpa_s,
  649. int registrar, const u8 *bssid)
  650. {
  651. struct wpa_ssid *ssid;
  652. ssid = wpa_config_add_network(wpa_s->conf);
  653. if (ssid == NULL)
  654. return NULL;
  655. wpas_notify_network_added(wpa_s, ssid);
  656. wpa_config_set_network_defaults(ssid);
  657. ssid->temporary = 1;
  658. if (wpa_config_set(ssid, "key_mgmt", "WPS", 0) < 0 ||
  659. wpa_config_set(ssid, "eap", "WSC", 0) < 0 ||
  660. wpa_config_set(ssid, "identity", registrar ?
  661. "\"" WSC_ID_REGISTRAR "\"" :
  662. "\"" WSC_ID_ENROLLEE "\"", 0) < 0) {
  663. wpas_notify_network_removed(wpa_s, ssid);
  664. wpa_config_remove_network(wpa_s->conf, ssid->id);
  665. return NULL;
  666. }
  667. if (bssid) {
  668. #ifndef CONFIG_P2P
  669. struct wpa_bss *bss;
  670. int count = 0;
  671. #endif /* CONFIG_P2P */
  672. os_memcpy(ssid->bssid, bssid, ETH_ALEN);
  673. ssid->bssid_set = 1;
  674. /*
  675. * Note: With P2P, the SSID may change at the time the WPS
  676. * provisioning is started, so better not filter the AP based
  677. * on the current SSID in the scan results.
  678. */
  679. #ifndef CONFIG_P2P
  680. dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
  681. if (os_memcmp(bssid, bss->bssid, ETH_ALEN) != 0)
  682. continue;
  683. os_free(ssid->ssid);
  684. ssid->ssid = os_malloc(bss->ssid_len);
  685. if (ssid->ssid == NULL)
  686. break;
  687. os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
  688. ssid->ssid_len = bss->ssid_len;
  689. wpa_hexdump_ascii(MSG_DEBUG, "WPS: Picked SSID from "
  690. "scan results",
  691. ssid->ssid, ssid->ssid_len);
  692. count++;
  693. }
  694. if (count > 1) {
  695. wpa_printf(MSG_DEBUG, "WPS: More than one SSID found "
  696. "for the AP; use wildcard");
  697. os_free(ssid->ssid);
  698. ssid->ssid = NULL;
  699. ssid->ssid_len = 0;
  700. }
  701. #endif /* CONFIG_P2P */
  702. }
  703. return ssid;
  704. }
  705. static void wpas_wps_reassoc(struct wpa_supplicant *wpa_s,
  706. struct wpa_ssid *selected, const u8 *bssid)
  707. {
  708. struct wpa_ssid *ssid;
  709. struct wpa_bss *bss;
  710. wpa_s->known_wps_freq = 0;
  711. if (bssid) {
  712. bss = wpa_bss_get_bssid(wpa_s, bssid);
  713. if (bss && bss->freq > 0) {
  714. wpa_s->known_wps_freq = 1;
  715. wpa_s->wps_freq = bss->freq;
  716. }
  717. }
  718. if (wpa_s->current_ssid)
  719. wpa_supplicant_deauthenticate(
  720. wpa_s, WLAN_REASON_DEAUTH_LEAVING);
  721. /* Mark all other networks disabled and trigger reassociation */
  722. ssid = wpa_s->conf->ssid;
  723. while (ssid) {
  724. int was_disabled = ssid->disabled;
  725. /*
  726. * In case the network object corresponds to a persistent group
  727. * then do not send out network disabled signal. In addition,
  728. * do not change disabled status of persistent network objects
  729. * from 2 to 1 should we connect to another network.
  730. */
  731. if (was_disabled != 2) {
  732. ssid->disabled = ssid != selected;
  733. if (was_disabled != ssid->disabled)
  734. wpas_notify_network_enabled_changed(wpa_s,
  735. ssid);
  736. }
  737. ssid = ssid->next;
  738. }
  739. wpa_s->disconnected = 0;
  740. wpa_s->reassociate = 1;
  741. wpa_s->scan_runs = 0;
  742. wpa_s->normal_scans = 0;
  743. wpa_s->wps_success = 0;
  744. wpa_s->blacklist_cleared = 0;
  745. wpa_supplicant_req_scan(wpa_s, 0, 0);
  746. }
  747. int wpas_wps_start_pbc(struct wpa_supplicant *wpa_s, const u8 *bssid,
  748. int p2p_group)
  749. {
  750. struct wpa_ssid *ssid;
  751. wpas_clear_wps(wpa_s);
  752. ssid = wpas_wps_add_network(wpa_s, 0, bssid);
  753. if (ssid == NULL)
  754. return -1;
  755. ssid->temporary = 1;
  756. ssid->p2p_group = p2p_group;
  757. #ifdef CONFIG_P2P
  758. if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) {
  759. ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1);
  760. if (ssid->ssid) {
  761. ssid->ssid_len = wpa_s->go_params->ssid_len;
  762. os_memcpy(ssid->ssid, wpa_s->go_params->ssid,
  763. ssid->ssid_len);
  764. wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP "
  765. "SSID", ssid->ssid, ssid->ssid_len);
  766. }
  767. }
  768. #endif /* CONFIG_P2P */
  769. wpa_config_set(ssid, "phase1", "\"pbc=1\"", 0);
  770. if (wpa_s->wps_fragment_size)
  771. ssid->eap.fragment_size = wpa_s->wps_fragment_size;
  772. eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
  773. wpa_s, NULL);
  774. wpas_wps_reassoc(wpa_s, ssid, bssid);
  775. return 0;
  776. }
  777. int wpas_wps_start_pin(struct wpa_supplicant *wpa_s, const u8 *bssid,
  778. const char *pin, int p2p_group, u16 dev_pw_id)
  779. {
  780. struct wpa_ssid *ssid;
  781. char val[128];
  782. unsigned int rpin = 0;
  783. wpas_clear_wps(wpa_s);
  784. ssid = wpas_wps_add_network(wpa_s, 0, bssid);
  785. if (ssid == NULL)
  786. return -1;
  787. ssid->temporary = 1;
  788. ssid->p2p_group = p2p_group;
  789. #ifdef CONFIG_P2P
  790. if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) {
  791. ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1);
  792. if (ssid->ssid) {
  793. ssid->ssid_len = wpa_s->go_params->ssid_len;
  794. os_memcpy(ssid->ssid, wpa_s->go_params->ssid,
  795. ssid->ssid_len);
  796. wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP "
  797. "SSID", ssid->ssid, ssid->ssid_len);
  798. }
  799. }
  800. #endif /* CONFIG_P2P */
  801. if (pin)
  802. os_snprintf(val, sizeof(val), "\"pin=%s dev_pw_id=%u\"",
  803. pin, dev_pw_id);
  804. else {
  805. rpin = wps_generate_pin();
  806. os_snprintf(val, sizeof(val), "\"pin=%08d dev_pw_id=%u\"",
  807. rpin, dev_pw_id);
  808. }
  809. wpa_config_set(ssid, "phase1", val, 0);
  810. if (wpa_s->wps_fragment_size)
  811. ssid->eap.fragment_size = wpa_s->wps_fragment_size;
  812. eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
  813. wpa_s, NULL);
  814. wpa_s->wps_ap_iter = 1;
  815. wpas_wps_reassoc(wpa_s, ssid, bssid);
  816. return rpin;
  817. }
  818. /* Cancel the wps pbc/pin requests */
  819. int wpas_wps_cancel(struct wpa_supplicant *wpa_s)
  820. {
  821. #ifdef CONFIG_AP
  822. if (wpa_s->ap_iface) {
  823. wpa_printf(MSG_DEBUG, "WPS: Cancelling in AP mode");
  824. return wpa_supplicant_ap_wps_cancel(wpa_s);
  825. }
  826. #endif /* CONFIG_AP */
  827. if (wpa_s->wpa_state == WPA_SCANNING ||
  828. wpa_s->wpa_state == WPA_DISCONNECTED) {
  829. wpa_printf(MSG_DEBUG, "WPS: Cancel operation - cancel scan");
  830. wpa_supplicant_cancel_scan(wpa_s);
  831. wpas_clear_wps(wpa_s);
  832. } else if (wpa_s->wpa_state >= WPA_ASSOCIATED) {
  833. wpa_printf(MSG_DEBUG, "WPS: Cancel operation - "
  834. "deauthenticate");
  835. wpa_supplicant_deauthenticate(wpa_s,
  836. WLAN_REASON_DEAUTH_LEAVING);
  837. wpas_clear_wps(wpa_s);
  838. } else
  839. wpas_wps_clear_ap_info(wpa_s);
  840. return 0;
  841. }
  842. #ifdef CONFIG_WPS_OOB
  843. int wpas_wps_start_oob(struct wpa_supplicant *wpa_s, char *device_type,
  844. char *path, char *method, char *name)
  845. {
  846. struct wps_context *wps = wpa_s->wps;
  847. struct oob_device_data *oob_dev;
  848. oob_dev = wps_get_oob_device(device_type);
  849. if (oob_dev == NULL)
  850. return -1;
  851. oob_dev->device_path = path;
  852. oob_dev->device_name = name;
  853. wps->oob_conf.oob_method = wps_get_oob_method(method);
  854. if (wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_E) {
  855. /*
  856. * Use pre-configured DH keys in order to be able to write the
  857. * key hash into the OOB file.
  858. */
  859. wpabuf_free(wps->dh_pubkey);
  860. wpabuf_free(wps->dh_privkey);
  861. wps->dh_privkey = NULL;
  862. wps->dh_pubkey = NULL;
  863. dh5_free(wps->dh_ctx);
  864. wps->dh_ctx = dh5_init(&wps->dh_privkey, &wps->dh_pubkey);
  865. wps->dh_pubkey = wpabuf_zeropad(wps->dh_pubkey, 192);
  866. if (wps->dh_ctx == NULL || wps->dh_pubkey == NULL) {
  867. wpa_printf(MSG_ERROR, "WPS: Failed to initialize "
  868. "Diffie-Hellman handshake");
  869. return -1;
  870. }
  871. }
  872. if (wps->oob_conf.oob_method == OOB_METHOD_CRED)
  873. wpas_clear_wps(wpa_s);
  874. if (wps_process_oob(wps, oob_dev, 0) < 0)
  875. return -1;
  876. if ((wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_E ||
  877. wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_R) &&
  878. wpas_wps_start_pin(wpa_s, NULL,
  879. wpabuf_head(wps->oob_conf.dev_password), 0,
  880. DEV_PW_DEFAULT) < 0)
  881. return -1;
  882. return 0;
  883. }
  884. #endif /* CONFIG_WPS_OOB */
  885. int wpas_wps_start_reg(struct wpa_supplicant *wpa_s, const u8 *bssid,
  886. const char *pin, struct wps_new_ap_settings *settings)
  887. {
  888. struct wpa_ssid *ssid;
  889. char val[200];
  890. char *pos, *end;
  891. int res;
  892. if (!pin)
  893. return -1;
  894. wpas_clear_wps(wpa_s);
  895. ssid = wpas_wps_add_network(wpa_s, 1, bssid);
  896. if (ssid == NULL)
  897. return -1;
  898. ssid->temporary = 1;
  899. pos = val;
  900. end = pos + sizeof(val);
  901. res = os_snprintf(pos, end - pos, "\"pin=%s", pin);
  902. if (res < 0 || res >= end - pos)
  903. return -1;
  904. pos += res;
  905. if (settings) {
  906. res = os_snprintf(pos, end - pos, " new_ssid=%s new_auth=%s "
  907. "new_encr=%s new_key=%s",
  908. settings->ssid_hex, settings->auth,
  909. settings->encr, settings->key_hex);
  910. if (res < 0 || res >= end - pos)
  911. return -1;
  912. pos += res;
  913. }
  914. res = os_snprintf(pos, end - pos, "\"");
  915. if (res < 0 || res >= end - pos)
  916. return -1;
  917. wpa_config_set(ssid, "phase1", val, 0);
  918. if (wpa_s->wps_fragment_size)
  919. ssid->eap.fragment_size = wpa_s->wps_fragment_size;
  920. eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
  921. wpa_s, NULL);
  922. wpas_wps_reassoc(wpa_s, ssid, bssid);
  923. return 0;
  924. }
  925. static int wpas_wps_new_psk_cb(void *ctx, const u8 *mac_addr, const u8 *psk,
  926. size_t psk_len)
  927. {
  928. wpa_printf(MSG_DEBUG, "WPS: Received new WPA/WPA2-PSK from WPS for "
  929. "STA " MACSTR, MAC2STR(mac_addr));
  930. wpa_hexdump_key(MSG_DEBUG, "Per-device PSK", psk, psk_len);
  931. /* TODO */
  932. return 0;
  933. }
  934. static void wpas_wps_pin_needed_cb(void *ctx, const u8 *uuid_e,
  935. const struct wps_device_data *dev)
  936. {
  937. char uuid[40], txt[400];
  938. int len;
  939. char devtype[WPS_DEV_TYPE_BUFSIZE];
  940. if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
  941. return;
  942. wpa_printf(MSG_DEBUG, "WPS: PIN needed for UUID-E %s", uuid);
  943. len = os_snprintf(txt, sizeof(txt), "WPS-EVENT-PIN-NEEDED %s " MACSTR
  944. " [%s|%s|%s|%s|%s|%s]",
  945. uuid, MAC2STR(dev->mac_addr), dev->device_name,
  946. dev->manufacturer, dev->model_name,
  947. dev->model_number, dev->serial_number,
  948. wps_dev_type_bin2str(dev->pri_dev_type, devtype,
  949. sizeof(devtype)));
  950. if (len > 0 && len < (int) sizeof(txt))
  951. wpa_printf(MSG_INFO, "%s", txt);
  952. }
  953. static void wpas_wps_set_sel_reg_cb(void *ctx, int sel_reg, u16 dev_passwd_id,
  954. u16 sel_reg_config_methods)
  955. {
  956. #ifdef CONFIG_WPS_ER
  957. struct wpa_supplicant *wpa_s = ctx;
  958. if (wpa_s->wps_er == NULL)
  959. return;
  960. wpa_printf(MSG_DEBUG, "WPS ER: SetSelectedRegistrar - sel_reg=%d "
  961. "dev_password_id=%u sel_reg_config_methods=0x%x",
  962. sel_reg, dev_passwd_id, sel_reg_config_methods);
  963. wps_er_set_sel_reg(wpa_s->wps_er, sel_reg, dev_passwd_id,
  964. sel_reg_config_methods);
  965. #endif /* CONFIG_WPS_ER */
  966. }
  967. static u16 wps_fix_config_methods(u16 config_methods)
  968. {
  969. #ifdef CONFIG_WPS2
  970. if ((config_methods &
  971. (WPS_CONFIG_DISPLAY | WPS_CONFIG_VIRT_DISPLAY |
  972. WPS_CONFIG_PHY_DISPLAY)) == WPS_CONFIG_DISPLAY) {
  973. wpa_printf(MSG_INFO, "WPS: Converting display to "
  974. "virtual_display for WPS 2.0 compliance");
  975. config_methods |= WPS_CONFIG_VIRT_DISPLAY;
  976. }
  977. if ((config_methods &
  978. (WPS_CONFIG_PUSHBUTTON | WPS_CONFIG_VIRT_PUSHBUTTON |
  979. WPS_CONFIG_PHY_PUSHBUTTON)) == WPS_CONFIG_PUSHBUTTON) {
  980. wpa_printf(MSG_INFO, "WPS: Converting push_button to "
  981. "virtual_push_button for WPS 2.0 compliance");
  982. config_methods |= WPS_CONFIG_VIRT_PUSHBUTTON;
  983. }
  984. #endif /* CONFIG_WPS2 */
  985. return config_methods;
  986. }
  987. static void wpas_wps_set_uuid(struct wpa_supplicant *wpa_s,
  988. struct wps_context *wps)
  989. {
  990. wpa_printf(MSG_DEBUG, "WPS: Set UUID for interface %s", wpa_s->ifname);
  991. if (is_nil_uuid(wpa_s->conf->uuid)) {
  992. struct wpa_supplicant *first;
  993. first = wpa_s->global->ifaces;
  994. while (first && first->next)
  995. first = first->next;
  996. if (first && first != wpa_s) {
  997. if (wps != wpa_s->global->ifaces->wps)
  998. os_memcpy(wps->uuid,
  999. wpa_s->global->ifaces->wps->uuid,
  1000. WPS_UUID_LEN);
  1001. wpa_hexdump(MSG_DEBUG, "WPS: UUID from the first "
  1002. "interface", wps->uuid, WPS_UUID_LEN);
  1003. } else {
  1004. uuid_gen_mac_addr(wpa_s->own_addr, wps->uuid);
  1005. wpa_hexdump(MSG_DEBUG, "WPS: UUID based on MAC "
  1006. "address", wps->uuid, WPS_UUID_LEN);
  1007. }
  1008. } else {
  1009. os_memcpy(wps->uuid, wpa_s->conf->uuid, WPS_UUID_LEN);
  1010. wpa_hexdump(MSG_DEBUG, "WPS: UUID based on configuration",
  1011. wps->uuid, WPS_UUID_LEN);
  1012. }
  1013. }
  1014. static void wpas_wps_set_vendor_ext_m1(struct wpa_supplicant *wpa_s,
  1015. struct wps_context *wps)
  1016. {
  1017. wpabuf_free(wps->dev.vendor_ext_m1);
  1018. wps->dev.vendor_ext_m1 = NULL;
  1019. if (wpa_s->conf->wps_vendor_ext_m1) {
  1020. wps->dev.vendor_ext_m1 =
  1021. wpabuf_dup(wpa_s->conf->wps_vendor_ext_m1);
  1022. if (!wps->dev.vendor_ext_m1) {
  1023. wpa_printf(MSG_ERROR, "WPS: Cannot "
  1024. "allocate memory for vendor_ext_m1");
  1025. }
  1026. }
  1027. }
  1028. int wpas_wps_init(struct wpa_supplicant *wpa_s)
  1029. {
  1030. struct wps_context *wps;
  1031. struct wps_registrar_config rcfg;
  1032. struct hostapd_hw_modes *modes;
  1033. u16 m;
  1034. wps = os_zalloc(sizeof(*wps));
  1035. if (wps == NULL)
  1036. return -1;
  1037. wps->cred_cb = wpa_supplicant_wps_cred;
  1038. wps->event_cb = wpa_supplicant_wps_event;
  1039. wps->cb_ctx = wpa_s;
  1040. wps->dev.device_name = wpa_s->conf->device_name;
  1041. wps->dev.manufacturer = wpa_s->conf->manufacturer;
  1042. wps->dev.model_name = wpa_s->conf->model_name;
  1043. wps->dev.model_number = wpa_s->conf->model_number;
  1044. wps->dev.serial_number = wpa_s->conf->serial_number;
  1045. wps->config_methods =
  1046. wps_config_methods_str2bin(wpa_s->conf->config_methods);
  1047. if ((wps->config_methods & (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) ==
  1048. (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
  1049. wpa_printf(MSG_ERROR, "WPS: Both Label and Display config "
  1050. "methods are not allowed at the same time");
  1051. os_free(wps);
  1052. return -1;
  1053. }
  1054. wps->config_methods = wps_fix_config_methods(wps->config_methods);
  1055. wps->dev.config_methods = wps->config_methods;
  1056. os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type,
  1057. WPS_DEV_TYPE_LEN);
  1058. wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
  1059. os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type,
  1060. WPS_DEV_TYPE_LEN * wps->dev.num_sec_dev_types);
  1061. wpas_wps_set_vendor_ext_m1(wpa_s, wps);
  1062. wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
  1063. modes = wpa_s->hw.modes;
  1064. if (modes) {
  1065. for (m = 0; m < wpa_s->hw.num_modes; m++) {
  1066. if (modes[m].mode == HOSTAPD_MODE_IEEE80211B ||
  1067. modes[m].mode == HOSTAPD_MODE_IEEE80211G)
  1068. wps->dev.rf_bands |= WPS_RF_24GHZ;
  1069. else if (modes[m].mode == HOSTAPD_MODE_IEEE80211A)
  1070. wps->dev.rf_bands |= WPS_RF_50GHZ;
  1071. }
  1072. }
  1073. if (wps->dev.rf_bands == 0) {
  1074. /*
  1075. * Default to claiming support for both bands if the driver
  1076. * does not provide support for fetching supported bands.
  1077. */
  1078. wps->dev.rf_bands = WPS_RF_24GHZ | WPS_RF_50GHZ;
  1079. }
  1080. os_memcpy(wps->dev.mac_addr, wpa_s->own_addr, ETH_ALEN);
  1081. wpas_wps_set_uuid(wpa_s, wps);
  1082. wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK;
  1083. wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP;
  1084. os_memset(&rcfg, 0, sizeof(rcfg));
  1085. rcfg.new_psk_cb = wpas_wps_new_psk_cb;
  1086. rcfg.pin_needed_cb = wpas_wps_pin_needed_cb;
  1087. rcfg.set_sel_reg_cb = wpas_wps_set_sel_reg_cb;
  1088. rcfg.cb_ctx = wpa_s;
  1089. wps->registrar = wps_registrar_init(wps, &rcfg);
  1090. if (wps->registrar == NULL) {
  1091. wpa_printf(MSG_DEBUG, "Failed to initialize WPS Registrar");
  1092. os_free(wps);
  1093. return -1;
  1094. }
  1095. wpa_s->wps = wps;
  1096. return 0;
  1097. }
  1098. void wpas_wps_deinit(struct wpa_supplicant *wpa_s)
  1099. {
  1100. eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
  1101. wpas_wps_clear_ap_info(wpa_s);
  1102. if (wpa_s->wps == NULL)
  1103. return;
  1104. #ifdef CONFIG_WPS_ER
  1105. wps_er_deinit(wpa_s->wps_er, NULL, NULL);
  1106. wpa_s->wps_er = NULL;
  1107. #endif /* CONFIG_WPS_ER */
  1108. wps_registrar_deinit(wpa_s->wps->registrar);
  1109. wpabuf_free(wpa_s->wps->dh_pubkey);
  1110. wpabuf_free(wpa_s->wps->dh_privkey);
  1111. wpabuf_free(wpa_s->wps->oob_conf.pubkey_hash);
  1112. wpabuf_free(wpa_s->wps->oob_conf.dev_password);
  1113. wpabuf_free(wpa_s->wps->dev.vendor_ext_m1);
  1114. os_free(wpa_s->wps->network_key);
  1115. os_free(wpa_s->wps);
  1116. wpa_s->wps = NULL;
  1117. }
  1118. int wpas_wps_ssid_bss_match(struct wpa_supplicant *wpa_s,
  1119. struct wpa_ssid *ssid, struct wpa_scan_res *bss)
  1120. {
  1121. struct wpabuf *wps_ie;
  1122. if (!(ssid->key_mgmt & WPA_KEY_MGMT_WPS))
  1123. return -1;
  1124. wps_ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
  1125. if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
  1126. if (!wps_ie) {
  1127. wpa_printf(MSG_DEBUG, " skip - non-WPS AP");
  1128. return 0;
  1129. }
  1130. if (!wps_is_selected_pbc_registrar(wps_ie)) {
  1131. wpa_printf(MSG_DEBUG, " skip - WPS AP "
  1132. "without active PBC Registrar");
  1133. wpabuf_free(wps_ie);
  1134. return 0;
  1135. }
  1136. /* TODO: overlap detection */
  1137. wpa_printf(MSG_DEBUG, " selected based on WPS IE "
  1138. "(Active PBC)");
  1139. wpabuf_free(wps_ie);
  1140. return 1;
  1141. }
  1142. if (eap_is_wps_pin_enrollee(&ssid->eap)) {
  1143. if (!wps_ie) {
  1144. wpa_printf(MSG_DEBUG, " skip - non-WPS AP");
  1145. return 0;
  1146. }
  1147. /*
  1148. * Start with WPS APs that advertise our address as an
  1149. * authorized MAC (v2.0) or active PIN Registrar (v1.0) and
  1150. * allow any WPS AP after couple of scans since some APs do not
  1151. * set Selected Registrar attribute properly when using
  1152. * external Registrar.
  1153. */
  1154. if (!wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1)) {
  1155. if (wpa_s->scan_runs < WPS_PIN_SCAN_IGNORE_SEL_REG) {
  1156. wpa_printf(MSG_DEBUG, " skip - WPS AP "
  1157. "without active PIN Registrar");
  1158. wpabuf_free(wps_ie);
  1159. return 0;
  1160. }
  1161. wpa_printf(MSG_DEBUG, " selected based on WPS IE");
  1162. } else {
  1163. wpa_printf(MSG_DEBUG, " selected based on WPS IE "
  1164. "(Authorized MAC or Active PIN)");
  1165. }
  1166. wpabuf_free(wps_ie);
  1167. return 1;
  1168. }
  1169. if (wps_ie) {
  1170. wpa_printf(MSG_DEBUG, " selected based on WPS IE");
  1171. wpabuf_free(wps_ie);
  1172. return 1;
  1173. }
  1174. return -1;
  1175. }
  1176. int wpas_wps_ssid_wildcard_ok(struct wpa_supplicant *wpa_s,
  1177. struct wpa_ssid *ssid,
  1178. struct wpa_scan_res *bss)
  1179. {
  1180. struct wpabuf *wps_ie = NULL;
  1181. int ret = 0;
  1182. if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
  1183. wps_ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
  1184. if (wps_ie && wps_is_selected_pbc_registrar(wps_ie)) {
  1185. /* allow wildcard SSID for WPS PBC */
  1186. ret = 1;
  1187. }
  1188. } else if (eap_is_wps_pin_enrollee(&ssid->eap)) {
  1189. wps_ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
  1190. if (wps_ie &&
  1191. (wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1) ||
  1192. wpa_s->scan_runs >= WPS_PIN_SCAN_IGNORE_SEL_REG)) {
  1193. /* allow wildcard SSID for WPS PIN */
  1194. ret = 1;
  1195. }
  1196. }
  1197. if (!ret && ssid->bssid_set &&
  1198. os_memcmp(ssid->bssid, bss->bssid, ETH_ALEN) == 0) {
  1199. /* allow wildcard SSID due to hardcoded BSSID match */
  1200. ret = 1;
  1201. }
  1202. #ifdef CONFIG_WPS_STRICT
  1203. if (wps_ie) {
  1204. if (wps_validate_beacon_probe_resp(wps_ie, bss->beacon_ie_len >
  1205. 0, bss->bssid) < 0)
  1206. ret = 0;
  1207. if (bss->beacon_ie_len) {
  1208. struct wpabuf *bcn_wps;
  1209. bcn_wps = wpa_scan_get_vendor_ie_multi_beacon(
  1210. bss, WPS_IE_VENDOR_TYPE);
  1211. if (bcn_wps == NULL) {
  1212. wpa_printf(MSG_DEBUG, "WPS: Mandatory WPS IE "
  1213. "missing from AP Beacon");
  1214. ret = 0;
  1215. } else {
  1216. if (wps_validate_beacon(wps_ie) < 0)
  1217. ret = 0;
  1218. wpabuf_free(bcn_wps);
  1219. }
  1220. }
  1221. }
  1222. #endif /* CONFIG_WPS_STRICT */
  1223. wpabuf_free(wps_ie);
  1224. return ret;
  1225. }
  1226. int wpas_wps_scan_pbc_overlap(struct wpa_supplicant *wpa_s,
  1227. struct wpa_bss *selected, struct wpa_ssid *ssid)
  1228. {
  1229. const u8 *sel_uuid, *uuid;
  1230. struct wpabuf *wps_ie;
  1231. int ret = 0;
  1232. struct wpa_bss *bss;
  1233. if (!eap_is_wps_pbc_enrollee(&ssid->eap))
  1234. return 0;
  1235. wpa_printf(MSG_DEBUG, "WPS: Check whether PBC session overlap is "
  1236. "present in scan results; selected BSSID " MACSTR,
  1237. MAC2STR(selected->bssid));
  1238. /* Make sure that only one AP is in active PBC mode */
  1239. wps_ie = wpa_bss_get_vendor_ie_multi(selected, WPS_IE_VENDOR_TYPE);
  1240. if (wps_ie) {
  1241. sel_uuid = wps_get_uuid_e(wps_ie);
  1242. wpa_hexdump(MSG_DEBUG, "WPS: UUID of the selected BSS",
  1243. sel_uuid, UUID_LEN);
  1244. } else {
  1245. wpa_printf(MSG_DEBUG, "WPS: Selected BSS does not include "
  1246. "WPS IE?!");
  1247. sel_uuid = NULL;
  1248. }
  1249. dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
  1250. struct wpabuf *ie;
  1251. if (bss == selected)
  1252. continue;
  1253. ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
  1254. if (!ie)
  1255. continue;
  1256. if (!wps_is_selected_pbc_registrar(ie)) {
  1257. wpabuf_free(ie);
  1258. continue;
  1259. }
  1260. wpa_printf(MSG_DEBUG, "WPS: Another BSS in active PBC mode: "
  1261. MACSTR, MAC2STR(bss->bssid));
  1262. uuid = wps_get_uuid_e(ie);
  1263. wpa_hexdump(MSG_DEBUG, "WPS: UUID of the other BSS",
  1264. uuid, UUID_LEN);
  1265. if (sel_uuid == NULL || uuid == NULL ||
  1266. os_memcmp(sel_uuid, uuid, UUID_LEN) != 0) {
  1267. ret = 1; /* PBC overlap */
  1268. wpa_msg(wpa_s, MSG_INFO, "WPS: PBC overlap detected: "
  1269. MACSTR " and " MACSTR,
  1270. MAC2STR(selected->bssid),
  1271. MAC2STR(bss->bssid));
  1272. wpabuf_free(ie);
  1273. break;
  1274. }
  1275. /* TODO: verify that this is reasonable dual-band situation */
  1276. wpabuf_free(ie);
  1277. }
  1278. wpabuf_free(wps_ie);
  1279. return ret;
  1280. }
  1281. void wpas_wps_notify_scan_results(struct wpa_supplicant *wpa_s)
  1282. {
  1283. struct wpa_bss *bss;
  1284. unsigned int pbc = 0, auth = 0, pin = 0, wps = 0;
  1285. if (wpa_s->disconnected || wpa_s->wpa_state >= WPA_ASSOCIATED)
  1286. return;
  1287. dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
  1288. struct wpabuf *ie;
  1289. ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
  1290. if (!ie)
  1291. continue;
  1292. if (wps_is_selected_pbc_registrar(ie))
  1293. pbc++;
  1294. else if (wps_is_addr_authorized(ie, wpa_s->own_addr, 0))
  1295. auth++;
  1296. else if (wps_is_selected_pin_registrar(ie))
  1297. pin++;
  1298. else
  1299. wps++;
  1300. wpabuf_free(ie);
  1301. }
  1302. if (pbc)
  1303. wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PBC);
  1304. else if (auth)
  1305. wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_AUTH);
  1306. else if (pin)
  1307. wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PIN);
  1308. else if (wps)
  1309. wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE);
  1310. }
  1311. int wpas_wps_searching(struct wpa_supplicant *wpa_s)
  1312. {
  1313. struct wpa_ssid *ssid;
  1314. for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
  1315. if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && !ssid->disabled)
  1316. return 1;
  1317. }
  1318. return 0;
  1319. }
  1320. int wpas_wps_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
  1321. char *end)
  1322. {
  1323. struct wpabuf *wps_ie;
  1324. int ret;
  1325. wps_ie = ieee802_11_vendor_ie_concat(ies, ies_len, WPS_DEV_OUI_WFA);
  1326. if (wps_ie == NULL)
  1327. return 0;
  1328. ret = wps_attr_text(wps_ie, buf, end);
  1329. wpabuf_free(wps_ie);
  1330. return ret;
  1331. }
  1332. int wpas_wps_er_start(struct wpa_supplicant *wpa_s, const char *filter)
  1333. {
  1334. #ifdef CONFIG_WPS_ER
  1335. if (wpa_s->wps_er) {
  1336. wps_er_refresh(wpa_s->wps_er);
  1337. return 0;
  1338. }
  1339. wpa_s->wps_er = wps_er_init(wpa_s->wps, wpa_s->ifname, filter);
  1340. if (wpa_s->wps_er == NULL)
  1341. return -1;
  1342. return 0;
  1343. #else /* CONFIG_WPS_ER */
  1344. return 0;
  1345. #endif /* CONFIG_WPS_ER */
  1346. }
  1347. int wpas_wps_er_stop(struct wpa_supplicant *wpa_s)
  1348. {
  1349. #ifdef CONFIG_WPS_ER
  1350. wps_er_deinit(wpa_s->wps_er, NULL, NULL);
  1351. wpa_s->wps_er = NULL;
  1352. #endif /* CONFIG_WPS_ER */
  1353. return 0;
  1354. }
  1355. #ifdef CONFIG_WPS_ER
  1356. int wpas_wps_er_add_pin(struct wpa_supplicant *wpa_s, const u8 *addr,
  1357. const char *uuid, const char *pin)
  1358. {
  1359. u8 u[UUID_LEN];
  1360. int any = 0;
  1361. if (os_strcmp(uuid, "any") == 0)
  1362. any = 1;
  1363. else if (uuid_str2bin(uuid, u))
  1364. return -1;
  1365. return wps_registrar_add_pin(wpa_s->wps->registrar, addr,
  1366. any ? NULL : u,
  1367. (const u8 *) pin, os_strlen(pin), 300);
  1368. }
  1369. int wpas_wps_er_pbc(struct wpa_supplicant *wpa_s, const char *uuid)
  1370. {
  1371. u8 u[UUID_LEN];
  1372. if (uuid_str2bin(uuid, u))
  1373. return -1;
  1374. return wps_er_pbc(wpa_s->wps_er, u);
  1375. }
  1376. int wpas_wps_er_learn(struct wpa_supplicant *wpa_s, const char *uuid,
  1377. const char *pin)
  1378. {
  1379. u8 u[UUID_LEN];
  1380. if (uuid_str2bin(uuid, u))
  1381. return -1;
  1382. return wps_er_learn(wpa_s->wps_er, u, (const u8 *) pin,
  1383. os_strlen(pin));
  1384. }
  1385. int wpas_wps_er_set_config(struct wpa_supplicant *wpa_s, const char *uuid,
  1386. int id)
  1387. {
  1388. u8 u[UUID_LEN];
  1389. struct wpa_ssid *ssid;
  1390. struct wps_credential cred;
  1391. if (uuid_str2bin(uuid, u))
  1392. return -1;
  1393. ssid = wpa_config_get_network(wpa_s->conf, id);
  1394. if (ssid == NULL || ssid->ssid == NULL)
  1395. return -1;
  1396. os_memset(&cred, 0, sizeof(cred));
  1397. if (ssid->ssid_len > 32)
  1398. return -1;
  1399. os_memcpy(cred.ssid, ssid->ssid, ssid->ssid_len);
  1400. cred.ssid_len = ssid->ssid_len;
  1401. if (ssid->key_mgmt & WPA_KEY_MGMT_PSK) {
  1402. cred.auth_type = (ssid->proto & WPA_PROTO_RSN) ?
  1403. WPS_AUTH_WPA2PSK : WPS_AUTH_WPAPSK;
  1404. if (ssid->pairwise_cipher & WPA_CIPHER_CCMP)
  1405. cred.encr_type = WPS_ENCR_AES;
  1406. else
  1407. cred.encr_type = WPS_ENCR_TKIP;
  1408. if (ssid->passphrase) {
  1409. cred.key_len = os_strlen(ssid->passphrase);
  1410. if (cred.key_len >= 64)
  1411. return -1;
  1412. os_memcpy(cred.key, ssid->passphrase, cred.key_len);
  1413. } else if (ssid->psk_set) {
  1414. cred.key_len = 32;
  1415. os_memcpy(cred.key, ssid->psk, 32);
  1416. } else
  1417. return -1;
  1418. } else {
  1419. cred.auth_type = WPS_AUTH_OPEN;
  1420. cred.encr_type = WPS_ENCR_NONE;
  1421. }
  1422. return wps_er_set_config(wpa_s->wps_er, u, &cred);
  1423. }
  1424. int wpas_wps_er_config(struct wpa_supplicant *wpa_s, const char *uuid,
  1425. const char *pin, struct wps_new_ap_settings *settings)
  1426. {
  1427. u8 u[UUID_LEN];
  1428. struct wps_credential cred;
  1429. size_t len;
  1430. if (uuid_str2bin(uuid, u))
  1431. return -1;
  1432. if (settings->ssid_hex == NULL || settings->auth == NULL ||
  1433. settings->encr == NULL || settings->key_hex == NULL)
  1434. return -1;
  1435. os_memset(&cred, 0, sizeof(cred));
  1436. len = os_strlen(settings->ssid_hex);
  1437. if ((len & 1) || len > 2 * sizeof(cred.ssid) ||
  1438. hexstr2bin(settings->ssid_hex, cred.ssid, len / 2))
  1439. return -1;
  1440. cred.ssid_len = len / 2;
  1441. len = os_strlen(settings->key_hex);
  1442. if ((len & 1) || len > 2 * sizeof(cred.key) ||
  1443. hexstr2bin(settings->key_hex, cred.key, len / 2))
  1444. return -1;
  1445. cred.key_len = len / 2;
  1446. if (os_strcmp(settings->auth, "OPEN") == 0)
  1447. cred.auth_type = WPS_AUTH_OPEN;
  1448. else if (os_strcmp(settings->auth, "WPAPSK") == 0)
  1449. cred.auth_type = WPS_AUTH_WPAPSK;
  1450. else if (os_strcmp(settings->auth, "WPA2PSK") == 0)
  1451. cred.auth_type = WPS_AUTH_WPA2PSK;
  1452. else
  1453. return -1;
  1454. if (os_strcmp(settings->encr, "NONE") == 0)
  1455. cred.encr_type = WPS_ENCR_NONE;
  1456. else if (os_strcmp(settings->encr, "WEP") == 0)
  1457. cred.encr_type = WPS_ENCR_WEP;
  1458. else if (os_strcmp(settings->encr, "TKIP") == 0)
  1459. cred.encr_type = WPS_ENCR_TKIP;
  1460. else if (os_strcmp(settings->encr, "CCMP") == 0)
  1461. cred.encr_type = WPS_ENCR_AES;
  1462. else
  1463. return -1;
  1464. return wps_er_config(wpa_s->wps_er, u, (const u8 *) pin,
  1465. os_strlen(pin), &cred);
  1466. }
  1467. #ifdef CONFIG_WPS_NFC
  1468. struct wpabuf * wpas_wps_er_nfc_config_token(struct wpa_supplicant *wpa_s,
  1469. int ndef, const char *uuid)
  1470. {
  1471. struct wpabuf *ret;
  1472. u8 u[UUID_LEN];
  1473. if (!wpa_s->wps_er)
  1474. return NULL;
  1475. if (uuid_str2bin(uuid, u))
  1476. return NULL;
  1477. ret = wps_er_nfc_config_token(wpa_s->wps_er, u);
  1478. if (ndef && ret) {
  1479. struct wpabuf *tmp;
  1480. tmp = ndef_build_wifi(ret);
  1481. wpabuf_free(ret);
  1482. if (tmp == NULL)
  1483. return NULL;
  1484. ret = tmp;
  1485. }
  1486. return ret;
  1487. }
  1488. #endif /* CONFIG_WPS_NFC */
  1489. static int callbacks_pending = 0;
  1490. static void wpas_wps_terminate_cb(void *ctx)
  1491. {
  1492. wpa_printf(MSG_DEBUG, "WPS ER: Terminated");
  1493. if (--callbacks_pending <= 0)
  1494. eloop_terminate();
  1495. }
  1496. #endif /* CONFIG_WPS_ER */
  1497. int wpas_wps_terminate_pending(struct wpa_supplicant *wpa_s)
  1498. {
  1499. #ifdef CONFIG_WPS_ER
  1500. if (wpa_s->wps_er) {
  1501. callbacks_pending++;
  1502. wps_er_deinit(wpa_s->wps_er, wpas_wps_terminate_cb, wpa_s);
  1503. wpa_s->wps_er = NULL;
  1504. return 1;
  1505. }
  1506. #endif /* CONFIG_WPS_ER */
  1507. return 0;
  1508. }
  1509. int wpas_wps_in_progress(struct wpa_supplicant *wpa_s)
  1510. {
  1511. struct wpa_ssid *ssid;
  1512. for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
  1513. if (!ssid->disabled && ssid->key_mgmt == WPA_KEY_MGMT_WPS)
  1514. return 1;
  1515. }
  1516. return 0;
  1517. }
  1518. void wpas_wps_update_config(struct wpa_supplicant *wpa_s)
  1519. {
  1520. struct wps_context *wps = wpa_s->wps;
  1521. if (wps == NULL)
  1522. return;
  1523. if (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS) {
  1524. wps->config_methods = wps_config_methods_str2bin(
  1525. wpa_s->conf->config_methods);
  1526. if ((wps->config_methods &
  1527. (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) ==
  1528. (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
  1529. wpa_printf(MSG_ERROR, "WPS: Both Label and Display "
  1530. "config methods are not allowed at the "
  1531. "same time");
  1532. wps->config_methods &= ~WPS_CONFIG_LABEL;
  1533. }
  1534. }
  1535. wps->config_methods = wps_fix_config_methods(wps->config_methods);
  1536. wps->dev.config_methods = wps->config_methods;
  1537. if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
  1538. os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type,
  1539. WPS_DEV_TYPE_LEN);
  1540. if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE) {
  1541. wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
  1542. os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type,
  1543. wps->dev.num_sec_dev_types * WPS_DEV_TYPE_LEN);
  1544. }
  1545. if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION)
  1546. wpas_wps_set_vendor_ext_m1(wpa_s, wps);
  1547. if (wpa_s->conf->changed_parameters & CFG_CHANGED_OS_VERSION)
  1548. wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
  1549. if (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID)
  1550. wpas_wps_set_uuid(wpa_s, wps);
  1551. if (wpa_s->conf->changed_parameters &
  1552. (CFG_CHANGED_DEVICE_NAME | CFG_CHANGED_WPS_STRING)) {
  1553. /* Update pointers to make sure they refer current values */
  1554. wps->dev.device_name = wpa_s->conf->device_name;
  1555. wps->dev.manufacturer = wpa_s->conf->manufacturer;
  1556. wps->dev.model_name = wpa_s->conf->model_name;
  1557. wps->dev.model_number = wpa_s->conf->model_number;
  1558. wps->dev.serial_number = wpa_s->conf->serial_number;
  1559. }
  1560. }
  1561. #ifdef CONFIG_WPS_NFC
  1562. struct wpabuf * wpas_wps_nfc_token(struct wpa_supplicant *wpa_s, int ndef)
  1563. {
  1564. return wps_nfc_token_gen(ndef, &wpa_s->conf->wps_nfc_dev_pw_id,
  1565. &wpa_s->conf->wps_nfc_dh_pubkey,
  1566. &wpa_s->conf->wps_nfc_dh_privkey,
  1567. &wpa_s->conf->wps_nfc_dev_pw);
  1568. }
  1569. int wpas_wps_start_nfc(struct wpa_supplicant *wpa_s, const u8 *bssid)
  1570. {
  1571. struct wps_context *wps = wpa_s->wps;
  1572. char pw[32 * 2 + 1];
  1573. if (wpa_s->conf->wps_nfc_dh_pubkey == NULL ||
  1574. wpa_s->conf->wps_nfc_dh_privkey == NULL ||
  1575. wpa_s->conf->wps_nfc_dev_pw == NULL)
  1576. return -1;
  1577. dh5_free(wps->dh_ctx);
  1578. wpabuf_free(wps->dh_pubkey);
  1579. wpabuf_free(wps->dh_privkey);
  1580. wps->dh_privkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
  1581. wps->dh_pubkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
  1582. if (wps->dh_privkey == NULL || wps->dh_pubkey == NULL) {
  1583. wps->dh_ctx = NULL;
  1584. wpabuf_free(wps->dh_pubkey);
  1585. wps->dh_pubkey = NULL;
  1586. wpabuf_free(wps->dh_privkey);
  1587. wps->dh_privkey = NULL;
  1588. return -1;
  1589. }
  1590. wps->dh_ctx = dh5_init_fixed(wps->dh_privkey, wps->dh_pubkey);
  1591. if (wps->dh_ctx == NULL)
  1592. return -1;
  1593. wpa_snprintf_hex_uppercase(pw, sizeof(pw),
  1594. wpabuf_head(wpa_s->conf->wps_nfc_dev_pw),
  1595. wpabuf_len(wpa_s->conf->wps_nfc_dev_pw));
  1596. return wpas_wps_start_pin(wpa_s, bssid, pw, 0,
  1597. wpa_s->conf->wps_nfc_dev_pw_id);
  1598. }
  1599. static int wpas_wps_use_cred(struct wpa_supplicant *wpa_s,
  1600. struct wps_parse_attr *attr)
  1601. {
  1602. if (wps_oob_use_cred(wpa_s->wps, attr) < 0)
  1603. return -1;
  1604. if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
  1605. return 0;
  1606. wpa_printf(MSG_DEBUG, "WPS: Request reconnection with new network "
  1607. "based on the received credential added");
  1608. wpa_s->normal_scans = 0;
  1609. wpa_supplicant_reinit_autoscan(wpa_s);
  1610. wpa_s->disconnected = 0;
  1611. wpa_s->reassociate = 1;
  1612. wpa_supplicant_req_scan(wpa_s, 0, 0);
  1613. return 0;
  1614. }
  1615. static int wpas_wps_add_nfc_password_token(struct wpa_supplicant *wpa_s,
  1616. struct wps_parse_attr *attr)
  1617. {
  1618. return wps_registrar_add_nfc_password_token(
  1619. wpa_s->wps->registrar, attr->oob_dev_password,
  1620. attr->oob_dev_password_len);
  1621. }
  1622. static int wpas_wps_nfc_tag_process(struct wpa_supplicant *wpa_s,
  1623. const struct wpabuf *wps)
  1624. {
  1625. struct wps_parse_attr attr;
  1626. wpa_hexdump_buf(MSG_DEBUG, "WPS: Received NFC tag payload", wps);
  1627. if (wps_parse_msg(wps, &attr)) {
  1628. wpa_printf(MSG_DEBUG, "WPS: Ignore invalid data from NFC tag");
  1629. return -1;
  1630. }
  1631. if (attr.num_cred)
  1632. return wpas_wps_use_cred(wpa_s, &attr);
  1633. #ifdef CONFIG_WPS_ER
  1634. if (attr.oob_dev_password)
  1635. return wpas_wps_add_nfc_password_token(wpa_s, &attr);
  1636. #endif /* CONFIG_WPS_ER */
  1637. wpa_printf(MSG_DEBUG, "WPS: Ignore unrecognized NFC tag");
  1638. return -1;
  1639. }
  1640. int wpas_wps_nfc_tag_read(struct wpa_supplicant *wpa_s,
  1641. const struct wpabuf *data)
  1642. {
  1643. const struct wpabuf *wps = data;
  1644. struct wpabuf *tmp = NULL;
  1645. int ret;
  1646. if (wpabuf_len(data) < 4)
  1647. return -1;
  1648. if (*wpabuf_head_u8(data) != 0x10) {
  1649. /* Assume this contains full NDEF record */
  1650. tmp = ndef_parse_wifi(data);
  1651. if (tmp == NULL) {
  1652. wpa_printf(MSG_DEBUG, "WPS: Could not parse NDEF");
  1653. return -1;
  1654. }
  1655. wps = tmp;
  1656. }
  1657. ret = wpas_wps_nfc_tag_process(wpa_s, wps);
  1658. wpabuf_free(tmp);
  1659. return ret;
  1660. }
  1661. #endif /* CONFIG_WPS_NFC */
  1662. extern int wpa_debug_level;
  1663. static void wpas_wps_dump_ap_info(struct wpa_supplicant *wpa_s)
  1664. {
  1665. size_t i;
  1666. struct os_time now;
  1667. if (wpa_debug_level > MSG_DEBUG)
  1668. return;
  1669. if (wpa_s->wps_ap == NULL)
  1670. return;
  1671. os_get_time(&now);
  1672. for (i = 0; i < wpa_s->num_wps_ap; i++) {
  1673. struct wps_ap_info *ap = &wpa_s->wps_ap[i];
  1674. struct wpa_blacklist *e = wpa_blacklist_get(wpa_s, ap->bssid);
  1675. wpa_printf(MSG_DEBUG, "WPS: AP[%d] " MACSTR " type=%d "
  1676. "tries=%d last_attempt=%d sec ago blacklist=%d",
  1677. (int) i, MAC2STR(ap->bssid), ap->type, ap->tries,
  1678. ap->last_attempt.sec > 0 ?
  1679. (int) now.sec - (int) ap->last_attempt.sec : -1,
  1680. e ? e->count : 0);
  1681. }
  1682. }
  1683. static struct wps_ap_info * wpas_wps_get_ap_info(struct wpa_supplicant *wpa_s,
  1684. const u8 *bssid)
  1685. {
  1686. size_t i;
  1687. if (wpa_s->wps_ap == NULL)
  1688. return NULL;
  1689. for (i = 0; i < wpa_s->num_wps_ap; i++) {
  1690. struct wps_ap_info *ap = &wpa_s->wps_ap[i];
  1691. if (os_memcmp(ap->bssid, bssid, ETH_ALEN) == 0)
  1692. return ap;
  1693. }
  1694. return NULL;
  1695. }
  1696. static void wpas_wps_update_ap_info_bss(struct wpa_supplicant *wpa_s,
  1697. struct wpa_scan_res *res)
  1698. {
  1699. struct wpabuf *wps;
  1700. enum wps_ap_info_type type;
  1701. struct wps_ap_info *ap;
  1702. int r;
  1703. if (wpa_scan_get_vendor_ie(res, WPS_IE_VENDOR_TYPE) == NULL)
  1704. return;
  1705. wps = wpa_scan_get_vendor_ie_multi(res, WPS_IE_VENDOR_TYPE);
  1706. if (wps == NULL)
  1707. return;
  1708. r = wps_is_addr_authorized(wps, wpa_s->own_addr, 1);
  1709. if (r == 2)
  1710. type = WPS_AP_SEL_REG_OUR;
  1711. else if (r == 1)
  1712. type = WPS_AP_SEL_REG;
  1713. else
  1714. type = WPS_AP_NOT_SEL_REG;
  1715. wpabuf_free(wps);
  1716. ap = wpas_wps_get_ap_info(wpa_s, res->bssid);
  1717. if (ap) {
  1718. if (ap->type != type) {
  1719. wpa_printf(MSG_DEBUG, "WPS: AP " MACSTR
  1720. " changed type %d -> %d",
  1721. MAC2STR(res->bssid), ap->type, type);
  1722. ap->type = type;
  1723. if (type != WPS_AP_NOT_SEL_REG)
  1724. wpa_blacklist_del(wpa_s, ap->bssid);
  1725. }
  1726. return;
  1727. }
  1728. ap = os_realloc_array(wpa_s->wps_ap, wpa_s->num_wps_ap + 1,
  1729. sizeof(struct wps_ap_info));
  1730. if (ap == NULL)
  1731. return;
  1732. wpa_s->wps_ap = ap;
  1733. ap = &wpa_s->wps_ap[wpa_s->num_wps_ap];
  1734. wpa_s->num_wps_ap++;
  1735. os_memset(ap, 0, sizeof(*ap));
  1736. os_memcpy(ap->bssid, res->bssid, ETH_ALEN);
  1737. ap->type = type;
  1738. wpa_printf(MSG_DEBUG, "WPS: AP " MACSTR " type %d added",
  1739. MAC2STR(ap->bssid), ap->type);
  1740. }
  1741. void wpas_wps_update_ap_info(struct wpa_supplicant *wpa_s,
  1742. struct wpa_scan_results *scan_res)
  1743. {
  1744. size_t i;
  1745. for (i = 0; i < scan_res->num; i++)
  1746. wpas_wps_update_ap_info_bss(wpa_s, scan_res->res[i]);
  1747. wpas_wps_dump_ap_info(wpa_s);
  1748. }
  1749. void wpas_wps_notify_assoc(struct wpa_supplicant *wpa_s, const u8 *bssid)
  1750. {
  1751. struct wps_ap_info *ap;
  1752. if (!wpa_s->wps_ap_iter)
  1753. return;
  1754. ap = wpas_wps_get_ap_info(wpa_s, bssid);
  1755. if (ap == NULL)
  1756. return;
  1757. ap->tries++;
  1758. os_get_time(&ap->last_attempt);
  1759. }