1 /*
2 * hostapd / WPS integration
3 * Copyright (c) 2008-2016, Jouni Malinen <j@w1.fi>
4 *
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
7 */
8
9 #include "utils/includes.h"
10
11 #include "utils/common.h"
12 #include "utils/eloop.h"
13 #include "utils/uuid.h"
14 #include "common/wpa_ctrl.h"
15 #include "common/ieee802_11_defs.h"
16 #include "common/ieee802_11_common.h"
17 #include "eapol_auth/eapol_auth_sm.h"
18 #include "eapol_auth/eapol_auth_sm_i.h"
19 #include "wps/wps.h"
20 #include "wps/wps_defs.h"
21 #include "wps/wps_dev_attr.h"
22 #include "wps/wps_attr_parse.h"
23 #include "hostapd.h"
24 #include "ap_config.h"
25 #include "ap_drv_ops.h"
26 #include "beacon.h"
27 #include "sta_info.h"
28 #include "wps_hostapd.h"
29
30
31 #ifdef CONFIG_WPS_UPNP
32 #include "wps/wps_upnp.h"
33 static int hostapd_wps_upnp_init(struct hostapd_data *hapd,
34 struct wps_context *wps);
35 static void hostapd_wps_upnp_deinit(struct hostapd_data *hapd);
36 #endif /* CONFIG_WPS_UPNP */
37
38 static int hostapd_wps_probe_req_rx(void *ctx, const u8 *addr, const u8 *da,
39 const u8 *bssid,
40 const u8 *ie, size_t ie_len,
41 int ssi_signal);
42 static void hostapd_wps_ap_pin_timeout(void *eloop_data, void *user_ctx);
43 static void hostapd_wps_nfc_clear(struct wps_context *wps);
44
45
46 struct wps_for_each_data {
47 int (*func)(struct hostapd_data *h, void *ctx);
48 void *ctx;
49 struct hostapd_data *calling_hapd;
50 };
51
52
wps_for_each(struct hostapd_iface * iface,void * ctx)53 static int wps_for_each(struct hostapd_iface *iface, void *ctx)
54 {
55 struct wps_for_each_data *data = ctx;
56 size_t j;
57
58 if (iface == NULL)
59 return 0;
60 for (j = 0; j < iface->num_bss; j++) {
61 struct hostapd_data *hapd = iface->bss[j];
62 int ret;
63
64 if (hapd != data->calling_hapd &&
65 (hapd->conf->wps_independent ||
66 data->calling_hapd->conf->wps_independent))
67 continue;
68
69 ret = data->func(hapd, data->ctx);
70 if (ret)
71 return ret;
72 }
73
74 return 0;
75 }
76
77
hostapd_wps_for_each(struct hostapd_data * hapd,int (* func)(struct hostapd_data * h,void * ctx),void * ctx)78 static int hostapd_wps_for_each(struct hostapd_data *hapd,
79 int (*func)(struct hostapd_data *h, void *ctx),
80 void *ctx)
81 {
82 struct hostapd_iface *iface = hapd->iface;
83 struct wps_for_each_data data;
84 data.func = func;
85 data.ctx = ctx;
86 data.calling_hapd = hapd;
87 if (iface->interfaces == NULL ||
88 iface->interfaces->for_each_interface == NULL)
89 return wps_for_each(iface, &data);
90 return iface->interfaces->for_each_interface(iface->interfaces,
91 wps_for_each, &data);
92 }
93
94
hostapd_wps_new_psk_cb(void * ctx,const u8 * mac_addr,const u8 * p2p_dev_addr,const u8 * psk,size_t psk_len)95 static int hostapd_wps_new_psk_cb(void *ctx, const u8 *mac_addr,
96 const u8 *p2p_dev_addr, const u8 *psk,
97 size_t psk_len)
98 {
99 struct hostapd_data *hapd = ctx;
100 struct hostapd_wpa_psk *p;
101 struct hostapd_ssid *ssid = &hapd->conf->ssid;
102
103 if (is_zero_ether_addr(p2p_dev_addr)) {
104 wpa_printf(MSG_DEBUG,
105 "Received new WPA/WPA2-PSK from WPS for STA " MACSTR,
106 MAC2STR(mac_addr));
107 } else {
108 wpa_printf(MSG_DEBUG,
109 "Received new WPA/WPA2-PSK from WPS for STA " MACSTR
110 " P2P Device Addr " MACSTR,
111 MAC2STR(mac_addr), MAC2STR(p2p_dev_addr));
112 }
113 wpa_hexdump_key(MSG_DEBUG, "Per-device PSK", psk, psk_len);
114
115 if (psk_len != PMK_LEN) {
116 wpa_printf(MSG_DEBUG, "Unexpected PSK length %lu",
117 (unsigned long) psk_len);
118 return -1;
119 }
120
121 /* Add the new PSK to runtime PSK list */
122 p = os_zalloc(sizeof(*p));
123 if (p == NULL)
124 return -1;
125 os_memcpy(p->addr, mac_addr, ETH_ALEN);
126 os_memcpy(p->p2p_dev_addr, p2p_dev_addr, ETH_ALEN);
127 os_memcpy(p->psk, psk, PMK_LEN);
128
129 if (hapd->new_psk_cb) {
130 hapd->new_psk_cb(hapd->new_psk_cb_ctx, mac_addr, p2p_dev_addr,
131 psk, psk_len);
132 }
133
134 p->next = ssid->wpa_psk;
135 ssid->wpa_psk = p;
136
137 if (ssid->wpa_psk_file) {
138 FILE *f;
139 char hex[PMK_LEN * 2 + 1];
140 /* Add the new PSK to PSK list file */
141 f = fopen(ssid->wpa_psk_file, "a");
142 if (f == NULL) {
143 wpa_printf(MSG_DEBUG, "Failed to add the PSK to "
144 "'%s'", ssid->wpa_psk_file);
145 return -1;
146 }
147
148 wpa_snprintf_hex(hex, sizeof(hex), psk, psk_len);
149 fprintf(f, MACSTR " %s\n", MAC2STR(mac_addr), hex);
150 fclose(f);
151 }
152
153 return 0;
154 }
155
156
hostapd_wps_set_ie_cb(void * ctx,struct wpabuf * beacon_ie,struct wpabuf * probe_resp_ie)157 static int hostapd_wps_set_ie_cb(void *ctx, struct wpabuf *beacon_ie,
158 struct wpabuf *probe_resp_ie)
159 {
160 struct hostapd_data *hapd = ctx;
161 wpabuf_free(hapd->wps_beacon_ie);
162 hapd->wps_beacon_ie = beacon_ie;
163 wpabuf_free(hapd->wps_probe_resp_ie);
164 hapd->wps_probe_resp_ie = probe_resp_ie;
165 if (hapd->beacon_set_done)
166 ieee802_11_set_beacon(hapd);
167 return hostapd_set_ap_wps_ie(hapd);
168 }
169
170
hostapd_wps_pin_needed_cb(void * ctx,const u8 * uuid_e,const struct wps_device_data * dev)171 static void hostapd_wps_pin_needed_cb(void *ctx, const u8 *uuid_e,
172 const struct wps_device_data *dev)
173 {
174 struct hostapd_data *hapd = ctx;
175 char uuid[40], txt[400];
176 int len;
177 char devtype[WPS_DEV_TYPE_BUFSIZE];
178 if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
179 return;
180 wpa_printf(MSG_DEBUG, "WPS: PIN needed for E-UUID %s", uuid);
181 len = os_snprintf(txt, sizeof(txt), WPS_EVENT_PIN_NEEDED
182 "%s " MACSTR " [%s|%s|%s|%s|%s|%s]",
183 uuid, MAC2STR(dev->mac_addr), dev->device_name,
184 dev->manufacturer, dev->model_name,
185 dev->model_number, dev->serial_number,
186 wps_dev_type_bin2str(dev->pri_dev_type, devtype,
187 sizeof(devtype)));
188 if (!os_snprintf_error(sizeof(txt), len))
189 wpa_msg(hapd->msg_ctx, MSG_INFO, "%s", txt);
190
191 if (hapd->conf->wps_pin_requests) {
192 FILE *f;
193 struct os_time t;
194 f = fopen(hapd->conf->wps_pin_requests, "a");
195 if (f == NULL)
196 return;
197 os_get_time(&t);
198 fprintf(f, "%ld\t%s\t" MACSTR "\t%s\t%s\t%s\t%s\t%s"
199 "\t%s\n",
200 t.sec, uuid, MAC2STR(dev->mac_addr), dev->device_name,
201 dev->manufacturer, dev->model_name, dev->model_number,
202 dev->serial_number,
203 wps_dev_type_bin2str(dev->pri_dev_type, devtype,
204 sizeof(devtype)));
205 fclose(f);
206 }
207 }
208
209
210 struct wps_stop_reg_data {
211 struct hostapd_data *current_hapd;
212 const u8 *uuid_e;
213 const u8 *dev_pw;
214 size_t dev_pw_len;
215 };
216
wps_stop_registrar(struct hostapd_data * hapd,void * ctx)217 static int wps_stop_registrar(struct hostapd_data *hapd, void *ctx)
218 {
219 struct wps_stop_reg_data *data = ctx;
220 if (hapd != data->current_hapd && hapd->wps != NULL)
221 wps_registrar_complete(hapd->wps->registrar, data->uuid_e,
222 data->dev_pw, data->dev_pw_len);
223 return 0;
224 }
225
226
hostapd_wps_reg_success_cb(void * ctx,const u8 * mac_addr,const u8 * uuid_e,const u8 * dev_pw,size_t dev_pw_len)227 static void hostapd_wps_reg_success_cb(void *ctx, const u8 *mac_addr,
228 const u8 *uuid_e, const u8 *dev_pw,
229 size_t dev_pw_len)
230 {
231 struct hostapd_data *hapd = ctx;
232 char uuid[40];
233 struct wps_stop_reg_data data;
234 if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
235 return;
236 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_REG_SUCCESS MACSTR " %s",
237 MAC2STR(mac_addr), uuid);
238 if (hapd->wps_reg_success_cb)
239 hapd->wps_reg_success_cb(hapd->wps_reg_success_cb_ctx,
240 mac_addr, uuid_e);
241 data.current_hapd = hapd;
242 data.uuid_e = uuid_e;
243 data.dev_pw = dev_pw;
244 data.dev_pw_len = dev_pw_len;
245 hostapd_wps_for_each(hapd, wps_stop_registrar, &data);
246 }
247
248
hostapd_wps_enrollee_seen_cb(void * ctx,const u8 * addr,const u8 * uuid_e,const u8 * pri_dev_type,u16 config_methods,u16 dev_password_id,u8 request_type,const char * dev_name)249 static void hostapd_wps_enrollee_seen_cb(void *ctx, const u8 *addr,
250 const u8 *uuid_e,
251 const u8 *pri_dev_type,
252 u16 config_methods,
253 u16 dev_password_id, u8 request_type,
254 const char *dev_name)
255 {
256 struct hostapd_data *hapd = ctx;
257 char uuid[40];
258 char devtype[WPS_DEV_TYPE_BUFSIZE];
259 if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
260 return;
261 if (dev_name == NULL)
262 dev_name = "";
263 wpa_msg_ctrl(hapd->msg_ctx, MSG_INFO, WPS_EVENT_ENROLLEE_SEEN MACSTR
264 " %s %s 0x%x %u %u [%s]",
265 MAC2STR(addr), uuid,
266 wps_dev_type_bin2str(pri_dev_type, devtype,
267 sizeof(devtype)),
268 config_methods, dev_password_id, request_type, dev_name);
269 }
270
271
wps_reload_config(void * eloop_data,void * user_ctx)272 static void wps_reload_config(void *eloop_data, void *user_ctx)
273 {
274 struct hostapd_iface *iface = eloop_data;
275
276 wpa_printf(MSG_DEBUG, "WPS: Reload configuration data");
277 if (iface->interfaces == NULL ||
278 iface->interfaces->reload_config(iface) < 0) {
279 wpa_printf(MSG_WARNING, "WPS: Failed to reload the updated "
280 "configuration");
281 }
282 }
283
284
hostapd_wps_eap_completed(struct hostapd_data * hapd)285 void hostapd_wps_eap_completed(struct hostapd_data *hapd)
286 {
287 /*
288 * Reduce race condition of the station trying to reconnect immediately
289 * after AP reconfiguration through WPS by rescheduling the reload
290 * timeout to happen after EAP completion rather than the originally
291 * scheduled 100 ms after new configuration became known.
292 */
293 if (eloop_deplete_timeout(0, 0, wps_reload_config, hapd->iface, NULL) ==
294 1)
295 wpa_printf(MSG_DEBUG, "WPS: Reschedule immediate configuration reload");
296 }
297
298
hapd_new_ap_event(struct hostapd_data * hapd,const u8 * attr,size_t attr_len)299 static void hapd_new_ap_event(struct hostapd_data *hapd, const u8 *attr,
300 size_t attr_len)
301 {
302 size_t blen = attr_len * 2 + 1;
303 char *buf = os_malloc(blen);
304 if (buf) {
305 wpa_snprintf_hex(buf, blen, attr, attr_len);
306 wpa_msg(hapd->msg_ctx, MSG_INFO,
307 WPS_EVENT_NEW_AP_SETTINGS "%s", buf);
308 os_free(buf);
309 }
310 }
311
312
hapd_wps_reconfig_in_memory(struct hostapd_data * hapd,const struct wps_credential * cred)313 static int hapd_wps_reconfig_in_memory(struct hostapd_data *hapd,
314 const struct wps_credential *cred)
315 {
316 struct hostapd_bss_config *bss = hapd->conf;
317
318 wpa_printf(MSG_DEBUG, "WPS: Updating in-memory configuration");
319
320 bss->wps_state = 2;
321 if (cred->ssid_len <= SSID_MAX_LEN) {
322 os_memcpy(bss->ssid.ssid, cred->ssid, cred->ssid_len);
323 bss->ssid.ssid_len = cred->ssid_len;
324 bss->ssid.ssid_set = 1;
325 }
326
327 if ((cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA2PSK)) &&
328 (cred->auth_type & (WPS_AUTH_WPA | WPS_AUTH_WPAPSK)))
329 bss->wpa = 3;
330 else if (cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA2PSK))
331 bss->wpa = 2;
332 else if (cred->auth_type & (WPS_AUTH_WPA | WPS_AUTH_WPAPSK))
333 bss->wpa = 1;
334 else
335 bss->wpa = 0;
336
337 if (bss->wpa) {
338 if (cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA))
339 bss->wpa_key_mgmt = WPA_KEY_MGMT_IEEE8021X;
340 if (cred->auth_type & (WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK))
341 bss->wpa_key_mgmt = WPA_KEY_MGMT_PSK;
342
343 bss->wpa_pairwise = 0;
344 if (cred->encr_type & WPS_ENCR_AES) {
345 if (hapd->iconf->hw_mode == HOSTAPD_MODE_IEEE80211AD)
346 bss->wpa_pairwise |= WPA_CIPHER_GCMP;
347 else
348 bss->wpa_pairwise |= WPA_CIPHER_CCMP;
349 }
350 if (cred->encr_type & WPS_ENCR_TKIP)
351 bss->wpa_pairwise |= WPA_CIPHER_TKIP;
352 bss->rsn_pairwise = bss->wpa_pairwise;
353 bss->wpa_group = wpa_select_ap_group_cipher(bss->wpa,
354 bss->wpa_pairwise,
355 bss->rsn_pairwise);
356
357 if (cred->key_len >= 8 && cred->key_len < 64) {
358 os_free(bss->ssid.wpa_passphrase);
359 bss->ssid.wpa_passphrase = os_zalloc(cred->key_len + 1);
360 if (bss->ssid.wpa_passphrase)
361 os_memcpy(bss->ssid.wpa_passphrase, cred->key,
362 cred->key_len);
363 hostapd_config_clear_wpa_psk(&bss->ssid.wpa_psk);
364 } else if (cred->key_len == 64) {
365 hostapd_config_clear_wpa_psk(&bss->ssid.wpa_psk);
366 bss->ssid.wpa_psk =
367 os_zalloc(sizeof(struct hostapd_wpa_psk));
368 if (bss->ssid.wpa_psk &&
369 hexstr2bin((const char *) cred->key,
370 bss->ssid.wpa_psk->psk, PMK_LEN) == 0) {
371 bss->ssid.wpa_psk->group = 1;
372 os_free(bss->ssid.wpa_passphrase);
373 bss->ssid.wpa_passphrase = NULL;
374 }
375 }
376 bss->auth_algs = 1;
377 } else {
378 /*
379 * WPS 2.0 does not allow WEP to be configured, so no need to
380 * process that option here either.
381 */
382 bss->auth_algs = 1;
383 }
384
385 /* Schedule configuration reload after short period of time to allow
386 * EAP-WSC to be finished.
387 */
388 eloop_register_timeout(0, 100000, wps_reload_config, hapd->iface,
389 NULL);
390
391 return 0;
392 }
393
394
hapd_wps_cred_cb(struct hostapd_data * hapd,void * ctx)395 static int hapd_wps_cred_cb(struct hostapd_data *hapd, void *ctx)
396 {
397 const struct wps_credential *cred = ctx;
398 FILE *oconf, *nconf;
399 size_t len, i;
400 char *tmp_fname;
401 char buf[1024];
402 int multi_bss;
403 int wpa;
404
405 if (hapd->wps == NULL)
406 return 0;
407
408 wpa_hexdump_key(MSG_DEBUG, "WPS: Received Credential attribute",
409 cred->cred_attr, cred->cred_attr_len);
410
411 wpa_printf(MSG_DEBUG, "WPS: Received new AP Settings");
412 wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID", cred->ssid, cred->ssid_len);
413 wpa_printf(MSG_DEBUG, "WPS: Authentication Type 0x%x",
414 cred->auth_type);
415 wpa_printf(MSG_DEBUG, "WPS: Encryption Type 0x%x", cred->encr_type);
416 wpa_printf(MSG_DEBUG, "WPS: Network Key Index %d", cred->key_idx);
417 wpa_hexdump_key(MSG_DEBUG, "WPS: Network Key",
418 cred->key, cred->key_len);
419 wpa_printf(MSG_DEBUG, "WPS: MAC Address " MACSTR,
420 MAC2STR(cred->mac_addr));
421
422 if ((hapd->conf->wps_cred_processing == 1 ||
423 hapd->conf->wps_cred_processing == 2) && cred->cred_attr) {
424 hapd_new_ap_event(hapd, cred->cred_attr, cred->cred_attr_len);
425 } else if (hapd->conf->wps_cred_processing == 1 ||
426 hapd->conf->wps_cred_processing == 2) {
427 struct wpabuf *attr;
428 attr = wpabuf_alloc(200);
429 if (attr && wps_build_credential_wrap(attr, cred) == 0)
430 hapd_new_ap_event(hapd, wpabuf_head_u8(attr),
431 wpabuf_len(attr));
432 wpabuf_free(attr);
433 } else
434 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_NEW_AP_SETTINGS);
435
436 if (hapd->conf->wps_cred_processing == 1)
437 return 0;
438
439 os_memcpy(hapd->wps->ssid, cred->ssid, cred->ssid_len);
440 hapd->wps->ssid_len = cred->ssid_len;
441 hapd->wps->encr_types = cred->encr_type;
442 hapd->wps->encr_types_rsn = cred->encr_type;
443 hapd->wps->encr_types_wpa = cred->encr_type;
444 hapd->wps->auth_types = cred->auth_type;
445 hapd->wps->ap_encr_type = cred->encr_type;
446 hapd->wps->ap_auth_type = cred->auth_type;
447 if (cred->key_len == 0) {
448 os_free(hapd->wps->network_key);
449 hapd->wps->network_key = NULL;
450 hapd->wps->network_key_len = 0;
451 } else if ((cred->auth_type & (WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK)) &&
452 (cred->key_len < 8 || cred->key_len > 2 * PMK_LEN)) {
453 wpa_printf(MSG_INFO, "WPS: Invalid key length %lu for WPA/WPA2",
454 (unsigned long) cred->key_len);
455 return -1;
456 } else {
457 if (hapd->wps->network_key == NULL ||
458 hapd->wps->network_key_len < cred->key_len) {
459 hapd->wps->network_key_len = 0;
460 os_free(hapd->wps->network_key);
461 hapd->wps->network_key = os_malloc(cred->key_len);
462 if (hapd->wps->network_key == NULL)
463 return -1;
464 }
465 hapd->wps->network_key_len = cred->key_len;
466 os_memcpy(hapd->wps->network_key, cred->key, cred->key_len);
467 }
468 hapd->wps->wps_state = WPS_STATE_CONFIGURED;
469
470 if (hapd->iface->config_fname == NULL)
471 return hapd_wps_reconfig_in_memory(hapd, cred);
472 len = os_strlen(hapd->iface->config_fname) + 5;
473 tmp_fname = os_malloc(len);
474 if (tmp_fname == NULL)
475 return -1;
476 os_snprintf(tmp_fname, len, "%s-new", hapd->iface->config_fname);
477
478 oconf = fopen(hapd->iface->config_fname, "r");
479 if (oconf == NULL) {
480 wpa_printf(MSG_WARNING, "WPS: Could not open current "
481 "configuration file");
482 os_free(tmp_fname);
483 return -1;
484 }
485
486 nconf = fopen(tmp_fname, "w");
487 if (nconf == NULL) {
488 wpa_printf(MSG_WARNING, "WPS: Could not write updated "
489 "configuration file");
490 os_free(tmp_fname);
491 fclose(oconf);
492 return -1;
493 }
494
495 fprintf(nconf, "# WPS configuration - START\n");
496
497 fprintf(nconf, "wps_state=2\n");
498
499 if (is_hex(cred->ssid, cred->ssid_len)) {
500 fprintf(nconf, "ssid2=");
501 for (i = 0; i < cred->ssid_len; i++)
502 fprintf(nconf, "%02x", cred->ssid[i]);
503 fprintf(nconf, "\n");
504 } else {
505 fprintf(nconf, "ssid=");
506 for (i = 0; i < cred->ssid_len; i++)
507 fputc(cred->ssid[i], nconf);
508 fprintf(nconf, "\n");
509 }
510
511 if ((cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA2PSK)) &&
512 (cred->auth_type & (WPS_AUTH_WPA | WPS_AUTH_WPAPSK)))
513 wpa = 3;
514 else if (cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA2PSK))
515 wpa = 2;
516 else if (cred->auth_type & (WPS_AUTH_WPA | WPS_AUTH_WPAPSK))
517 wpa = 1;
518 else
519 wpa = 0;
520
521 if (wpa) {
522 char *prefix;
523 fprintf(nconf, "wpa=%d\n", wpa);
524
525 fprintf(nconf, "wpa_key_mgmt=");
526 prefix = "";
527 if (cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA)) {
528 fprintf(nconf, "WPA-EAP");
529 prefix = " ";
530 }
531 if (cred->auth_type & (WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK))
532 fprintf(nconf, "%sWPA-PSK", prefix);
533 fprintf(nconf, "\n");
534
535 fprintf(nconf, "wpa_pairwise=");
536 prefix = "";
537 if (cred->encr_type & WPS_ENCR_AES) {
538 if (hapd->iconf->hw_mode == HOSTAPD_MODE_IEEE80211AD)
539 fprintf(nconf, "GCMP");
540 else
541 fprintf(nconf, "CCMP");
542
543 prefix = " ";
544 }
545 if (cred->encr_type & WPS_ENCR_TKIP) {
546 fprintf(nconf, "%sTKIP", prefix);
547 }
548 fprintf(nconf, "\n");
549
550 if (cred->key_len >= 8 && cred->key_len < 64) {
551 fprintf(nconf, "wpa_passphrase=");
552 for (i = 0; i < cred->key_len; i++)
553 fputc(cred->key[i], nconf);
554 fprintf(nconf, "\n");
555 } else if (cred->key_len == 64) {
556 fprintf(nconf, "wpa_psk=");
557 for (i = 0; i < cred->key_len; i++)
558 fputc(cred->key[i], nconf);
559 fprintf(nconf, "\n");
560 } else {
561 wpa_printf(MSG_WARNING, "WPS: Invalid key length %lu "
562 "for WPA/WPA2",
563 (unsigned long) cred->key_len);
564 }
565
566 fprintf(nconf, "auth_algs=1\n");
567 } else {
568 /*
569 * WPS 2.0 does not allow WEP to be configured, so no need to
570 * process that option here either.
571 */
572 fprintf(nconf, "auth_algs=1\n");
573 }
574
575 fprintf(nconf, "# WPS configuration - END\n");
576
577 multi_bss = 0;
578 while (fgets(buf, sizeof(buf), oconf)) {
579 if (os_strncmp(buf, "bss=", 4) == 0)
580 multi_bss = 1;
581 if (!multi_bss &&
582 (str_starts(buf, "ssid=") ||
583 str_starts(buf, "ssid2=") ||
584 str_starts(buf, "auth_algs=") ||
585 str_starts(buf, "wep_default_key=") ||
586 str_starts(buf, "wep_key") ||
587 str_starts(buf, "wps_state=") ||
588 str_starts(buf, "wpa=") ||
589 str_starts(buf, "wpa_psk=") ||
590 str_starts(buf, "wpa_pairwise=") ||
591 str_starts(buf, "rsn_pairwise=") ||
592 str_starts(buf, "wpa_key_mgmt=") ||
593 str_starts(buf, "wpa_passphrase="))) {
594 fprintf(nconf, "#WPS# %s", buf);
595 } else
596 fprintf(nconf, "%s", buf);
597 }
598
599 fclose(nconf);
600 fclose(oconf);
601
602 if (rename(tmp_fname, hapd->iface->config_fname) < 0) {
603 wpa_printf(MSG_WARNING, "WPS: Failed to rename the updated "
604 "configuration file: %s", strerror(errno));
605 os_free(tmp_fname);
606 return -1;
607 }
608
609 os_free(tmp_fname);
610
611 /* Schedule configuration reload after short period of time to allow
612 * EAP-WSC to be finished.
613 */
614 eloop_register_timeout(0, 100000, wps_reload_config, hapd->iface,
615 NULL);
616
617 wpa_printf(MSG_DEBUG, "WPS: AP configuration updated");
618
619 return 0;
620 }
621
622
hostapd_wps_cred_cb(void * ctx,const struct wps_credential * cred)623 static int hostapd_wps_cred_cb(void *ctx, const struct wps_credential *cred)
624 {
625 struct hostapd_data *hapd = ctx;
626 return hostapd_wps_for_each(hapd, hapd_wps_cred_cb, (void *) cred);
627 }
628
629
hostapd_wps_reenable_ap_pin(void * eloop_data,void * user_ctx)630 static void hostapd_wps_reenable_ap_pin(void *eloop_data, void *user_ctx)
631 {
632 struct hostapd_data *hapd = eloop_data;
633
634 if (hapd->conf->ap_setup_locked)
635 return;
636 if (hapd->ap_pin_failures_consecutive >= 10)
637 return;
638
639 wpa_printf(MSG_DEBUG, "WPS: Re-enable AP PIN");
640 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_SETUP_UNLOCKED);
641 hapd->wps->ap_setup_locked = 0;
642 wps_registrar_update_ie(hapd->wps->registrar);
643 }
644
645
wps_pwd_auth_fail(struct hostapd_data * hapd,void * ctx)646 static int wps_pwd_auth_fail(struct hostapd_data *hapd, void *ctx)
647 {
648 struct wps_event_pwd_auth_fail *data = ctx;
649
650 if (!data->enrollee || hapd->conf->ap_pin == NULL || hapd->wps == NULL)
651 return 0;
652
653 /*
654 * Registrar failed to prove its knowledge of the AP PIN. Lock AP setup
655 * for some time if this happens multiple times to slow down brute
656 * force attacks.
657 */
658 hapd->ap_pin_failures++;
659 hapd->ap_pin_failures_consecutive++;
660 wpa_printf(MSG_DEBUG, "WPS: AP PIN authentication failure number %u "
661 "(%u consecutive)",
662 hapd->ap_pin_failures, hapd->ap_pin_failures_consecutive);
663 if (hapd->ap_pin_failures < 3)
664 return 0;
665
666 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_SETUP_LOCKED);
667 hapd->wps->ap_setup_locked = 1;
668
669 wps_registrar_update_ie(hapd->wps->registrar);
670
671 if (!hapd->conf->ap_setup_locked &&
672 hapd->ap_pin_failures_consecutive >= 10) {
673 /*
674 * In indefinite lockdown - disable automatic AP PIN
675 * reenablement.
676 */
677 eloop_cancel_timeout(hostapd_wps_reenable_ap_pin, hapd, NULL);
678 wpa_printf(MSG_DEBUG, "WPS: AP PIN disabled indefinitely");
679 } else if (!hapd->conf->ap_setup_locked) {
680 if (hapd->ap_pin_lockout_time == 0)
681 hapd->ap_pin_lockout_time = 60;
682 else if (hapd->ap_pin_lockout_time < 365 * 24 * 60 * 60 &&
683 (hapd->ap_pin_failures % 3) == 0)
684 hapd->ap_pin_lockout_time *= 2;
685
686 wpa_printf(MSG_DEBUG, "WPS: Disable AP PIN for %u seconds",
687 hapd->ap_pin_lockout_time);
688 eloop_cancel_timeout(hostapd_wps_reenable_ap_pin, hapd, NULL);
689 eloop_register_timeout(hapd->ap_pin_lockout_time, 0,
690 hostapd_wps_reenable_ap_pin, hapd,
691 NULL);
692 }
693
694 return 0;
695 }
696
697
hostapd_pwd_auth_fail(struct hostapd_data * hapd,struct wps_event_pwd_auth_fail * data)698 static void hostapd_pwd_auth_fail(struct hostapd_data *hapd,
699 struct wps_event_pwd_auth_fail *data)
700 {
701 /* Update WPS Status - Authentication Failure */
702 wpa_printf(MSG_DEBUG, "WPS: Authentication failure update");
703 hapd->wps_stats.status = WPS_STATUS_FAILURE;
704 hapd->wps_stats.failure_reason = WPS_EI_AUTH_FAILURE;
705 os_memcpy(hapd->wps_stats.peer_addr, data->peer_macaddr, ETH_ALEN);
706
707 hostapd_wps_for_each(hapd, wps_pwd_auth_fail, data);
708 }
709
710
wps_ap_pin_success(struct hostapd_data * hapd,void * ctx)711 static int wps_ap_pin_success(struct hostapd_data *hapd, void *ctx)
712 {
713 if (hapd->conf->ap_pin == NULL || hapd->wps == NULL)
714 return 0;
715
716 if (hapd->ap_pin_failures_consecutive == 0)
717 return 0;
718
719 wpa_printf(MSG_DEBUG, "WPS: Clear consecutive AP PIN failure counter "
720 "- total validation failures %u (%u consecutive)",
721 hapd->ap_pin_failures, hapd->ap_pin_failures_consecutive);
722 hapd->ap_pin_failures_consecutive = 0;
723
724 return 0;
725 }
726
727
hostapd_wps_ap_pin_success(struct hostapd_data * hapd)728 static void hostapd_wps_ap_pin_success(struct hostapd_data *hapd)
729 {
730 hostapd_wps_for_each(hapd, wps_ap_pin_success, NULL);
731 }
732
733
hostapd_wps_event_pbc_overlap(struct hostapd_data * hapd)734 static void hostapd_wps_event_pbc_overlap(struct hostapd_data *hapd)
735 {
736 /* Update WPS Status - PBC Overlap */
737 hapd->wps_stats.pbc_status = WPS_PBC_STATUS_OVERLAP;
738 }
739
740
hostapd_wps_event_pbc_timeout(struct hostapd_data * hapd)741 static void hostapd_wps_event_pbc_timeout(struct hostapd_data *hapd)
742 {
743 /* Update WPS PBC Status:PBC Timeout */
744 hapd->wps_stats.pbc_status = WPS_PBC_STATUS_TIMEOUT;
745 }
746
747
hostapd_wps_event_pbc_active(struct hostapd_data * hapd)748 static void hostapd_wps_event_pbc_active(struct hostapd_data *hapd)
749 {
750 /* Update WPS PBC status - Active */
751 hapd->wps_stats.pbc_status = WPS_PBC_STATUS_ACTIVE;
752 }
753
754
hostapd_wps_event_pbc_disable(struct hostapd_data * hapd)755 static void hostapd_wps_event_pbc_disable(struct hostapd_data *hapd)
756 {
757 /* Update WPS PBC status - Active */
758 hapd->wps_stats.pbc_status = WPS_PBC_STATUS_DISABLE;
759 }
760
761
hostapd_wps_event_success(struct hostapd_data * hapd,struct wps_event_success * success)762 static void hostapd_wps_event_success(struct hostapd_data *hapd,
763 struct wps_event_success *success)
764 {
765 /* Update WPS status - Success */
766 hapd->wps_stats.pbc_status = WPS_PBC_STATUS_DISABLE;
767 hapd->wps_stats.status = WPS_STATUS_SUCCESS;
768 os_memcpy(hapd->wps_stats.peer_addr, success->peer_macaddr, ETH_ALEN);
769 }
770
771
hostapd_wps_event_fail(struct hostapd_data * hapd,struct wps_event_fail * fail)772 static void hostapd_wps_event_fail(struct hostapd_data *hapd,
773 struct wps_event_fail *fail)
774 {
775 /* Update WPS status - Failure */
776 hapd->wps_stats.status = WPS_STATUS_FAILURE;
777 os_memcpy(hapd->wps_stats.peer_addr, fail->peer_macaddr, ETH_ALEN);
778
779 hapd->wps_stats.failure_reason = fail->error_indication;
780
781 if (fail->error_indication > 0 &&
782 fail->error_indication < NUM_WPS_EI_VALUES) {
783 wpa_msg(hapd->msg_ctx, MSG_INFO,
784 WPS_EVENT_FAIL "msg=%d config_error=%d reason=%d (%s)",
785 fail->msg, fail->config_error, fail->error_indication,
786 wps_ei_str(fail->error_indication));
787 } else {
788 wpa_msg(hapd->msg_ctx, MSG_INFO,
789 WPS_EVENT_FAIL "msg=%d config_error=%d",
790 fail->msg, fail->config_error);
791 }
792 }
793
794
hostapd_wps_event_cb(void * ctx,enum wps_event event,union wps_event_data * data)795 static void hostapd_wps_event_cb(void *ctx, enum wps_event event,
796 union wps_event_data *data)
797 {
798 struct hostapd_data *hapd = ctx;
799
800 switch (event) {
801 case WPS_EV_M2D:
802 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_M2D);
803 break;
804 case WPS_EV_FAIL:
805 hostapd_wps_event_fail(hapd, &data->fail);
806 break;
807 case WPS_EV_SUCCESS:
808 hostapd_wps_event_success(hapd, &data->success);
809 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_SUCCESS);
810 break;
811 case WPS_EV_PWD_AUTH_FAIL:
812 hostapd_pwd_auth_fail(hapd, &data->pwd_auth_fail);
813 break;
814 case WPS_EV_PBC_OVERLAP:
815 hostapd_wps_event_pbc_overlap(hapd);
816 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_OVERLAP);
817 break;
818 case WPS_EV_PBC_TIMEOUT:
819 hostapd_wps_event_pbc_timeout(hapd);
820 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_TIMEOUT);
821 break;
822 case WPS_EV_PBC_ACTIVE:
823 hostapd_wps_event_pbc_active(hapd);
824 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_ACTIVE);
825 break;
826 case WPS_EV_PBC_DISABLE:
827 hostapd_wps_event_pbc_disable(hapd);
828 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_DISABLE);
829 break;
830 case WPS_EV_ER_AP_ADD:
831 break;
832 case WPS_EV_ER_AP_REMOVE:
833 break;
834 case WPS_EV_ER_ENROLLEE_ADD:
835 break;
836 case WPS_EV_ER_ENROLLEE_REMOVE:
837 break;
838 case WPS_EV_ER_AP_SETTINGS:
839 break;
840 case WPS_EV_ER_SET_SELECTED_REGISTRAR:
841 break;
842 case WPS_EV_AP_PIN_SUCCESS:
843 hostapd_wps_ap_pin_success(hapd);
844 break;
845 }
846 if (hapd->wps_event_cb)
847 hapd->wps_event_cb(hapd->wps_event_cb_ctx, event, data);
848 }
849
850
hostapd_wps_rf_band_cb(void * ctx)851 static int hostapd_wps_rf_band_cb(void *ctx)
852 {
853 struct hostapd_data *hapd = ctx;
854
855 return hapd->iconf->hw_mode == HOSTAPD_MODE_IEEE80211A ?
856 WPS_RF_50GHZ :
857 hapd->iconf->hw_mode == HOSTAPD_MODE_IEEE80211AD ?
858 WPS_RF_60GHZ : WPS_RF_24GHZ; /* FIX: dualband AP */
859 }
860
861
hostapd_wps_clear_ies(struct hostapd_data * hapd,int deinit_only)862 static void hostapd_wps_clear_ies(struct hostapd_data *hapd, int deinit_only)
863 {
864 wpabuf_free(hapd->wps_beacon_ie);
865 hapd->wps_beacon_ie = NULL;
866
867 wpabuf_free(hapd->wps_probe_resp_ie);
868 hapd->wps_probe_resp_ie = NULL;
869
870 if (deinit_only) {
871 if (hapd->drv_priv)
872 hostapd_reset_ap_wps_ie(hapd);
873 return;
874 }
875
876 hostapd_set_ap_wps_ie(hapd);
877 }
878
879
get_uuid_cb(struct hostapd_iface * iface,void * ctx)880 static int get_uuid_cb(struct hostapd_iface *iface, void *ctx)
881 {
882 const u8 **uuid = ctx;
883 size_t j;
884
885 if (iface == NULL)
886 return 0;
887 for (j = 0; j < iface->num_bss; j++) {
888 struct hostapd_data *hapd = iface->bss[j];
889 if (hapd->wps && !hapd->conf->wps_independent &&
890 !is_nil_uuid(hapd->wps->uuid)) {
891 *uuid = hapd->wps->uuid;
892 return 1;
893 }
894 }
895
896 return 0;
897 }
898
899
get_own_uuid(struct hostapd_iface * iface)900 static const u8 * get_own_uuid(struct hostapd_iface *iface)
901 {
902 const u8 *uuid;
903 if (iface->interfaces == NULL ||
904 iface->interfaces->for_each_interface == NULL)
905 return NULL;
906 uuid = NULL;
907 iface->interfaces->for_each_interface(iface->interfaces, get_uuid_cb,
908 &uuid);
909 return uuid;
910 }
911
912
count_interface_cb(struct hostapd_iface * iface,void * ctx)913 static int count_interface_cb(struct hostapd_iface *iface, void *ctx)
914 {
915 int *count= ctx;
916 (*count)++;
917 return 0;
918 }
919
920
interface_count(struct hostapd_iface * iface)921 static int interface_count(struct hostapd_iface *iface)
922 {
923 int count = 0;
924 if (iface->interfaces == NULL ||
925 iface->interfaces->for_each_interface == NULL)
926 return 0;
927 iface->interfaces->for_each_interface(iface->interfaces,
928 count_interface_cb, &count);
929 return count;
930 }
931
932
hostapd_wps_set_vendor_ext(struct hostapd_data * hapd,struct wps_context * wps)933 static int hostapd_wps_set_vendor_ext(struct hostapd_data *hapd,
934 struct wps_context *wps)
935 {
936 int i;
937
938 for (i = 0; i < MAX_WPS_VENDOR_EXTENSIONS; i++) {
939 wpabuf_free(wps->dev.vendor_ext[i]);
940 wps->dev.vendor_ext[i] = NULL;
941
942 if (hapd->conf->wps_vendor_ext[i] == NULL)
943 continue;
944
945 wps->dev.vendor_ext[i] =
946 wpabuf_dup(hapd->conf->wps_vendor_ext[i]);
947 if (wps->dev.vendor_ext[i] == NULL) {
948 while (--i >= 0)
949 wpabuf_free(wps->dev.vendor_ext[i]);
950 return -1;
951 }
952 }
953
954 return 0;
955 }
956
957
hostapd_free_wps(struct wps_context * wps)958 static void hostapd_free_wps(struct wps_context *wps)
959 {
960 int i;
961
962 for (i = 0; i < MAX_WPS_VENDOR_EXTENSIONS; i++)
963 wpabuf_free(wps->dev.vendor_ext[i]);
964 wps_device_data_free(&wps->dev);
965 os_free(wps->network_key);
966 hostapd_wps_nfc_clear(wps);
967 wpabuf_free(wps->dh_pubkey);
968 wpabuf_free(wps->dh_privkey);
969 os_free(wps);
970 }
971
972
hostapd_init_wps(struct hostapd_data * hapd,struct hostapd_bss_config * conf)973 int hostapd_init_wps(struct hostapd_data *hapd,
974 struct hostapd_bss_config *conf)
975 {
976 struct wps_context *wps;
977 struct wps_registrar_config cfg;
978
979 if (conf->wps_state == 0) {
980 hostapd_wps_clear_ies(hapd, 0);
981 return 0;
982 }
983
984 wps = os_zalloc(sizeof(*wps));
985 if (wps == NULL)
986 return -1;
987
988 wps->cred_cb = hostapd_wps_cred_cb;
989 wps->event_cb = hostapd_wps_event_cb;
990 wps->rf_band_cb = hostapd_wps_rf_band_cb;
991 wps->cb_ctx = hapd;
992
993 os_memset(&cfg, 0, sizeof(cfg));
994 wps->wps_state = hapd->conf->wps_state;
995 wps->ap_setup_locked = hapd->conf->ap_setup_locked;
996 if (is_nil_uuid(hapd->conf->uuid)) {
997 const u8 *uuid;
998 uuid = get_own_uuid(hapd->iface);
999 if (uuid && !conf->wps_independent) {
1000 os_memcpy(wps->uuid, uuid, UUID_LEN);
1001 wpa_hexdump(MSG_DEBUG, "WPS: Clone UUID from another "
1002 "interface", wps->uuid, UUID_LEN);
1003 } else {
1004 uuid_gen_mac_addr(hapd->own_addr, wps->uuid);
1005 wpa_hexdump(MSG_DEBUG, "WPS: UUID based on MAC "
1006 "address", wps->uuid, UUID_LEN);
1007 }
1008 } else {
1009 os_memcpy(wps->uuid, hapd->conf->uuid, UUID_LEN);
1010 wpa_hexdump(MSG_DEBUG, "WPS: Use configured UUID",
1011 wps->uuid, UUID_LEN);
1012 }
1013 wps->ssid_len = hapd->conf->ssid.ssid_len;
1014 os_memcpy(wps->ssid, hapd->conf->ssid.ssid, wps->ssid_len);
1015 wps->ap = 1;
1016 os_memcpy(wps->dev.mac_addr, hapd->own_addr, ETH_ALEN);
1017 wps->dev.device_name = hapd->conf->device_name ?
1018 os_strdup(hapd->conf->device_name) : NULL;
1019 wps->dev.manufacturer = hapd->conf->manufacturer ?
1020 os_strdup(hapd->conf->manufacturer) : NULL;
1021 wps->dev.model_name = hapd->conf->model_name ?
1022 os_strdup(hapd->conf->model_name) : NULL;
1023 wps->dev.model_number = hapd->conf->model_number ?
1024 os_strdup(hapd->conf->model_number) : NULL;
1025 wps->dev.serial_number = hapd->conf->serial_number ?
1026 os_strdup(hapd->conf->serial_number) : NULL;
1027 wps->config_methods =
1028 wps_config_methods_str2bin(hapd->conf->config_methods);
1029 if ((wps->config_methods &
1030 (WPS_CONFIG_DISPLAY | WPS_CONFIG_VIRT_DISPLAY |
1031 WPS_CONFIG_PHY_DISPLAY)) == WPS_CONFIG_DISPLAY) {
1032 wpa_printf(MSG_INFO, "WPS: Converting display to "
1033 "virtual_display for WPS 2.0 compliance");
1034 wps->config_methods |= WPS_CONFIG_VIRT_DISPLAY;
1035 }
1036 if ((wps->config_methods &
1037 (WPS_CONFIG_PUSHBUTTON | WPS_CONFIG_VIRT_PUSHBUTTON |
1038 WPS_CONFIG_PHY_PUSHBUTTON)) == WPS_CONFIG_PUSHBUTTON) {
1039 wpa_printf(MSG_INFO, "WPS: Converting push_button to "
1040 "virtual_push_button for WPS 2.0 compliance");
1041 wps->config_methods |= WPS_CONFIG_VIRT_PUSHBUTTON;
1042 }
1043 os_memcpy(wps->dev.pri_dev_type, hapd->conf->device_type,
1044 WPS_DEV_TYPE_LEN);
1045
1046 if (hostapd_wps_set_vendor_ext(hapd, wps) < 0)
1047 goto fail;
1048
1049 wps->dev.os_version = WPA_GET_BE32(hapd->conf->os_version);
1050
1051 if (conf->wps_rf_bands) {
1052 wps->dev.rf_bands = conf->wps_rf_bands;
1053 } else {
1054 wps->dev.rf_bands =
1055 hapd->iconf->hw_mode == HOSTAPD_MODE_IEEE80211A ?
1056 WPS_RF_50GHZ :
1057 hapd->iconf->hw_mode == HOSTAPD_MODE_IEEE80211AD ?
1058 WPS_RF_60GHZ : WPS_RF_24GHZ; /* FIX: dualband AP */
1059 }
1060
1061 if (conf->wpa & WPA_PROTO_RSN) {
1062 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_PSK)
1063 wps->auth_types |= WPS_AUTH_WPA2PSK;
1064 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X)
1065 wps->auth_types |= WPS_AUTH_WPA2;
1066
1067 if (conf->rsn_pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP)) {
1068 wps->encr_types |= WPS_ENCR_AES;
1069 wps->encr_types_rsn |= WPS_ENCR_AES;
1070 }
1071 if (conf->rsn_pairwise & WPA_CIPHER_TKIP) {
1072 wps->encr_types |= WPS_ENCR_TKIP;
1073 wps->encr_types_rsn |= WPS_ENCR_TKIP;
1074 }
1075 }
1076
1077 if (conf->wpa & WPA_PROTO_WPA) {
1078 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_PSK)
1079 wps->auth_types |= WPS_AUTH_WPAPSK;
1080 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X)
1081 wps->auth_types |= WPS_AUTH_WPA;
1082
1083 if (conf->wpa_pairwise & WPA_CIPHER_CCMP) {
1084 wps->encr_types |= WPS_ENCR_AES;
1085 wps->encr_types_wpa |= WPS_ENCR_AES;
1086 }
1087 if (conf->wpa_pairwise & WPA_CIPHER_TKIP) {
1088 wps->encr_types |= WPS_ENCR_TKIP;
1089 wps->encr_types_wpa |= WPS_ENCR_TKIP;
1090 }
1091 }
1092
1093 if (conf->ssid.security_policy == SECURITY_PLAINTEXT) {
1094 wps->encr_types |= WPS_ENCR_NONE;
1095 wps->auth_types |= WPS_AUTH_OPEN;
1096 }
1097
1098 if (conf->ssid.wpa_psk_file) {
1099 /* Use per-device PSKs */
1100 } else if (conf->ssid.wpa_passphrase) {
1101 wps->network_key = (u8 *) os_strdup(conf->ssid.wpa_passphrase);
1102 wps->network_key_len = os_strlen(conf->ssid.wpa_passphrase);
1103 } else if (conf->ssid.wpa_psk) {
1104 wps->network_key = os_malloc(2 * PMK_LEN + 1);
1105 if (wps->network_key == NULL)
1106 goto fail;
1107 wpa_snprintf_hex((char *) wps->network_key, 2 * PMK_LEN + 1,
1108 conf->ssid.wpa_psk->psk, PMK_LEN);
1109 wps->network_key_len = 2 * PMK_LEN;
1110 } else if (conf->ssid.wep.keys_set && conf->ssid.wep.key[0]) {
1111 wps->network_key = os_malloc(conf->ssid.wep.len[0]);
1112 if (wps->network_key == NULL)
1113 goto fail;
1114 os_memcpy(wps->network_key, conf->ssid.wep.key[0],
1115 conf->ssid.wep.len[0]);
1116 wps->network_key_len = conf->ssid.wep.len[0];
1117 }
1118
1119 if (conf->ssid.wpa_psk) {
1120 os_memcpy(wps->psk, conf->ssid.wpa_psk->psk, PMK_LEN);
1121 wps->psk_set = 1;
1122 }
1123
1124 wps->ap_auth_type = wps->auth_types;
1125 wps->ap_encr_type = wps->encr_types;
1126 if (conf->wps_state == WPS_STATE_NOT_CONFIGURED) {
1127 /* Override parameters to enable security by default */
1128 wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK;
1129 wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP;
1130 wps->encr_types_rsn = WPS_ENCR_AES | WPS_ENCR_TKIP;
1131 wps->encr_types_wpa = WPS_ENCR_AES | WPS_ENCR_TKIP;
1132 }
1133
1134 wps->ap_settings = conf->ap_settings;
1135 wps->ap_settings_len = conf->ap_settings_len;
1136
1137 cfg.new_psk_cb = hostapd_wps_new_psk_cb;
1138 cfg.set_ie_cb = hostapd_wps_set_ie_cb;
1139 cfg.pin_needed_cb = hostapd_wps_pin_needed_cb;
1140 cfg.reg_success_cb = hostapd_wps_reg_success_cb;
1141 cfg.enrollee_seen_cb = hostapd_wps_enrollee_seen_cb;
1142 cfg.cb_ctx = hapd;
1143 cfg.skip_cred_build = conf->skip_cred_build;
1144 cfg.extra_cred = conf->extra_cred;
1145 cfg.extra_cred_len = conf->extra_cred_len;
1146 cfg.disable_auto_conf = (hapd->conf->wps_cred_processing == 1) &&
1147 conf->skip_cred_build;
1148 if (conf->ssid.security_policy == SECURITY_STATIC_WEP)
1149 cfg.static_wep_only = 1;
1150 cfg.dualband = interface_count(hapd->iface) > 1;
1151 if ((wps->dev.rf_bands & (WPS_RF_50GHZ | WPS_RF_24GHZ)) ==
1152 (WPS_RF_50GHZ | WPS_RF_24GHZ))
1153 cfg.dualband = 1;
1154 if (cfg.dualband)
1155 wpa_printf(MSG_DEBUG, "WPS: Dualband AP");
1156 cfg.force_per_enrollee_psk = conf->force_per_enrollee_psk;
1157
1158 wps->registrar = wps_registrar_init(wps, &cfg);
1159 if (wps->registrar == NULL) {
1160 wpa_printf(MSG_ERROR, "Failed to initialize WPS Registrar");
1161 goto fail;
1162 }
1163
1164 #ifdef CONFIG_WPS_UPNP
1165 wps->friendly_name = hapd->conf->friendly_name;
1166 wps->manufacturer_url = hapd->conf->manufacturer_url;
1167 wps->model_description = hapd->conf->model_description;
1168 wps->model_url = hapd->conf->model_url;
1169 wps->upc = hapd->conf->upc;
1170 #endif /* CONFIG_WPS_UPNP */
1171
1172 hostapd_register_probereq_cb(hapd, hostapd_wps_probe_req_rx, hapd);
1173
1174 hapd->wps = wps;
1175
1176 return 0;
1177
1178 fail:
1179 hostapd_free_wps(wps);
1180 return -1;
1181 }
1182
1183
hostapd_init_wps_complete(struct hostapd_data * hapd)1184 int hostapd_init_wps_complete(struct hostapd_data *hapd)
1185 {
1186 struct wps_context *wps = hapd->wps;
1187
1188 if (wps == NULL)
1189 return 0;
1190
1191 #ifdef CONFIG_WPS_UPNP
1192 if (hostapd_wps_upnp_init(hapd, wps) < 0) {
1193 wpa_printf(MSG_ERROR, "Failed to initialize WPS UPnP");
1194 wps_registrar_deinit(wps->registrar);
1195 hostapd_free_wps(wps);
1196 hapd->wps = NULL;
1197 return -1;
1198 }
1199 #endif /* CONFIG_WPS_UPNP */
1200
1201 return 0;
1202 }
1203
1204
hostapd_wps_nfc_clear(struct wps_context * wps)1205 static void hostapd_wps_nfc_clear(struct wps_context *wps)
1206 {
1207 #ifdef CONFIG_WPS_NFC
1208 wpa_printf(MSG_DEBUG, "WPS: Clear NFC Tag context %p", wps);
1209 wps->ap_nfc_dev_pw_id = 0;
1210 wpabuf_free(wps->ap_nfc_dh_pubkey);
1211 wps->ap_nfc_dh_pubkey = NULL;
1212 wpabuf_free(wps->ap_nfc_dh_privkey);
1213 wps->ap_nfc_dh_privkey = NULL;
1214 wpabuf_free(wps->ap_nfc_dev_pw);
1215 wps->ap_nfc_dev_pw = NULL;
1216 #endif /* CONFIG_WPS_NFC */
1217 }
1218
1219
hostapd_deinit_wps(struct hostapd_data * hapd)1220 void hostapd_deinit_wps(struct hostapd_data *hapd)
1221 {
1222 eloop_cancel_timeout(hostapd_wps_reenable_ap_pin, hapd, NULL);
1223 eloop_cancel_timeout(hostapd_wps_ap_pin_timeout, hapd, NULL);
1224 eloop_cancel_timeout(wps_reload_config, hapd->iface, NULL);
1225 if (hapd->wps == NULL) {
1226 hostapd_wps_clear_ies(hapd, 1);
1227 return;
1228 }
1229 #ifdef CONFIG_WPS_UPNP
1230 hostapd_wps_upnp_deinit(hapd);
1231 #endif /* CONFIG_WPS_UPNP */
1232 wps_registrar_deinit(hapd->wps->registrar);
1233 wps_free_pending_msgs(hapd->wps->upnp_msgs);
1234 hostapd_free_wps(hapd->wps);
1235 hapd->wps = NULL;
1236 hostapd_wps_clear_ies(hapd, 1);
1237 }
1238
1239
hostapd_update_wps(struct hostapd_data * hapd)1240 void hostapd_update_wps(struct hostapd_data *hapd)
1241 {
1242 if (hapd->wps == NULL)
1243 return;
1244
1245 #ifdef CONFIG_WPS_UPNP
1246 hapd->wps->friendly_name = hapd->conf->friendly_name;
1247 hapd->wps->manufacturer_url = hapd->conf->manufacturer_url;
1248 hapd->wps->model_description = hapd->conf->model_description;
1249 hapd->wps->model_url = hapd->conf->model_url;
1250 hapd->wps->upc = hapd->conf->upc;
1251 #endif /* CONFIG_WPS_UPNP */
1252
1253 hostapd_wps_set_vendor_ext(hapd, hapd->wps);
1254
1255 if (hapd->conf->wps_state)
1256 wps_registrar_update_ie(hapd->wps->registrar);
1257 else
1258 hostapd_deinit_wps(hapd);
1259 }
1260
1261
1262 struct wps_add_pin_data {
1263 const u8 *addr;
1264 const u8 *uuid;
1265 const u8 *pin;
1266 size_t pin_len;
1267 int timeout;
1268 int added;
1269 };
1270
1271
wps_add_pin(struct hostapd_data * hapd,void * ctx)1272 static int wps_add_pin(struct hostapd_data *hapd, void *ctx)
1273 {
1274 struct wps_add_pin_data *data = ctx;
1275 int ret;
1276
1277 if (hapd->wps == NULL)
1278 return 0;
1279 ret = wps_registrar_add_pin(hapd->wps->registrar, data->addr,
1280 data->uuid, data->pin, data->pin_len,
1281 data->timeout);
1282 if (ret == 0)
1283 data->added++;
1284 return ret;
1285 }
1286
1287
hostapd_wps_add_pin(struct hostapd_data * hapd,const u8 * addr,const char * uuid,const char * pin,int timeout)1288 int hostapd_wps_add_pin(struct hostapd_data *hapd, const u8 *addr,
1289 const char *uuid, const char *pin, int timeout)
1290 {
1291 u8 u[UUID_LEN];
1292 struct wps_add_pin_data data;
1293
1294 data.addr = addr;
1295 data.uuid = u;
1296 data.pin = (const u8 *) pin;
1297 data.pin_len = os_strlen(pin);
1298 data.timeout = timeout;
1299 data.added = 0;
1300
1301 if (os_strcmp(uuid, "any") == 0)
1302 data.uuid = NULL;
1303 else {
1304 if (uuid_str2bin(uuid, u))
1305 return -1;
1306 data.uuid = u;
1307 }
1308 if (hostapd_wps_for_each(hapd, wps_add_pin, &data) < 0)
1309 return -1;
1310 return data.added ? 0 : -1;
1311 }
1312
1313
1314 struct wps_button_pushed_ctx {
1315 const u8 *p2p_dev_addr;
1316 unsigned int count;
1317 };
1318
wps_button_pushed(struct hostapd_data * hapd,void * ctx)1319 static int wps_button_pushed(struct hostapd_data *hapd, void *ctx)
1320 {
1321 struct wps_button_pushed_ctx *data = ctx;
1322
1323 if (hapd->wps) {
1324 data->count++;
1325 return wps_registrar_button_pushed(hapd->wps->registrar,
1326 data->p2p_dev_addr);
1327 }
1328
1329 return 0;
1330 }
1331
1332
hostapd_wps_button_pushed(struct hostapd_data * hapd,const u8 * p2p_dev_addr)1333 int hostapd_wps_button_pushed(struct hostapd_data *hapd,
1334 const u8 *p2p_dev_addr)
1335 {
1336 struct wps_button_pushed_ctx ctx;
1337 int ret;
1338
1339 os_memset(&ctx, 0, sizeof(ctx));
1340 ctx.p2p_dev_addr = p2p_dev_addr;
1341 ret = hostapd_wps_for_each(hapd, wps_button_pushed, &ctx);
1342 if (ret == 0 && !ctx.count)
1343 ret = -1;
1344 return ret;
1345 }
1346
1347
1348 struct wps_cancel_ctx {
1349 unsigned int count;
1350 };
1351
wps_cancel(struct hostapd_data * hapd,void * ctx)1352 static int wps_cancel(struct hostapd_data *hapd, void *ctx)
1353 {
1354 struct wps_cancel_ctx *data = ctx;
1355
1356 if (hapd->wps) {
1357 data->count++;
1358 wps_registrar_wps_cancel(hapd->wps->registrar);
1359 ap_for_each_sta(hapd, ap_sta_wps_cancel, NULL);
1360 }
1361
1362 return 0;
1363 }
1364
1365
hostapd_wps_cancel(struct hostapd_data * hapd)1366 int hostapd_wps_cancel(struct hostapd_data *hapd)
1367 {
1368 struct wps_cancel_ctx ctx;
1369 int ret;
1370
1371 os_memset(&ctx, 0, sizeof(ctx));
1372 ret = hostapd_wps_for_each(hapd, wps_cancel, &ctx);
1373 if (ret == 0 && !ctx.count)
1374 ret = -1;
1375 return ret;
1376 }
1377
1378
hostapd_wps_probe_req_rx(void * ctx,const u8 * addr,const u8 * da,const u8 * bssid,const u8 * ie,size_t ie_len,int ssi_signal)1379 static int hostapd_wps_probe_req_rx(void *ctx, const u8 *addr, const u8 *da,
1380 const u8 *bssid,
1381 const u8 *ie, size_t ie_len,
1382 int ssi_signal)
1383 {
1384 struct hostapd_data *hapd = ctx;
1385 struct wpabuf *wps_ie;
1386 struct ieee802_11_elems elems;
1387
1388 if (hapd->wps == NULL)
1389 return 0;
1390
1391 if (ieee802_11_parse_elems(ie, ie_len, &elems, 0) == ParseFailed) {
1392 wpa_printf(MSG_DEBUG, "WPS: Could not parse ProbeReq from "
1393 MACSTR, MAC2STR(addr));
1394 return 0;
1395 }
1396
1397 if (elems.ssid && elems.ssid_len > 0 &&
1398 (elems.ssid_len != hapd->conf->ssid.ssid_len ||
1399 os_memcmp(elems.ssid, hapd->conf->ssid.ssid, elems.ssid_len) !=
1400 0))
1401 return 0; /* Not for us */
1402
1403 wps_ie = ieee802_11_vendor_ie_concat(ie, ie_len, WPS_DEV_OUI_WFA);
1404 if (wps_ie == NULL)
1405 return 0;
1406 if (wps_validate_probe_req(wps_ie, addr) < 0) {
1407 wpabuf_free(wps_ie);
1408 return 0;
1409 }
1410
1411 if (wpabuf_len(wps_ie) > 0) {
1412 int p2p_wildcard = 0;
1413 #ifdef CONFIG_P2P
1414 if (elems.ssid && elems.ssid_len == P2P_WILDCARD_SSID_LEN &&
1415 os_memcmp(elems.ssid, P2P_WILDCARD_SSID,
1416 P2P_WILDCARD_SSID_LEN) == 0)
1417 p2p_wildcard = 1;
1418 #endif /* CONFIG_P2P */
1419 wps_registrar_probe_req_rx(hapd->wps->registrar, addr, wps_ie,
1420 p2p_wildcard);
1421 #ifdef CONFIG_WPS_UPNP
1422 /* FIX: what exactly should be included in the WLANEvent?
1423 * WPS attributes? Full ProbeReq frame? */
1424 if (!p2p_wildcard)
1425 upnp_wps_device_send_wlan_event(
1426 hapd->wps_upnp, addr,
1427 UPNP_WPS_WLANEVENT_TYPE_PROBE, wps_ie);
1428 #endif /* CONFIG_WPS_UPNP */
1429 }
1430
1431 wpabuf_free(wps_ie);
1432
1433 return 0;
1434 }
1435
1436
1437 #ifdef CONFIG_WPS_UPNP
1438
hostapd_rx_req_put_wlan_response(void * priv,enum upnp_wps_wlanevent_type ev_type,const u8 * mac_addr,const struct wpabuf * msg,enum wps_msg_type msg_type)1439 static int hostapd_rx_req_put_wlan_response(
1440 void *priv, enum upnp_wps_wlanevent_type ev_type,
1441 const u8 *mac_addr, const struct wpabuf *msg,
1442 enum wps_msg_type msg_type)
1443 {
1444 struct hostapd_data *hapd = priv;
1445 struct sta_info *sta;
1446 struct upnp_pending_message *p;
1447
1448 wpa_printf(MSG_DEBUG, "WPS UPnP: PutWLANResponse ev_type=%d mac_addr="
1449 MACSTR, ev_type, MAC2STR(mac_addr));
1450 wpa_hexdump(MSG_MSGDUMP, "WPS UPnP: PutWLANResponse NewMessage",
1451 wpabuf_head(msg), wpabuf_len(msg));
1452 if (ev_type != UPNP_WPS_WLANEVENT_TYPE_EAP) {
1453 wpa_printf(MSG_DEBUG, "WPS UPnP: Ignored unexpected "
1454 "PutWLANResponse WLANEventType %d", ev_type);
1455 return -1;
1456 }
1457
1458 /*
1459 * EAP response to ongoing to WPS Registration. Send it to EAP-WSC
1460 * server implementation for delivery to the peer.
1461 */
1462
1463 sta = ap_get_sta(hapd, mac_addr);
1464 #ifndef CONFIG_WPS_STRICT
1465 if (!sta) {
1466 /*
1467 * Workaround - Intel wsccmd uses bogus NewWLANEventMAC:
1468 * Pick STA that is in an ongoing WPS registration without
1469 * checking the MAC address.
1470 */
1471 wpa_printf(MSG_DEBUG, "WPS UPnP: No matching STA found based "
1472 "on NewWLANEventMAC; try wildcard match");
1473 for (sta = hapd->sta_list; sta; sta = sta->next) {
1474 if (sta->eapol_sm && (sta->flags & WLAN_STA_WPS))
1475 break;
1476 }
1477 }
1478 #endif /* CONFIG_WPS_STRICT */
1479
1480 if (!sta || !(sta->flags & WLAN_STA_WPS)) {
1481 wpa_printf(MSG_DEBUG, "WPS UPnP: No matching STA found");
1482 return 0;
1483 }
1484
1485 if (!sta->eapol_sm) {
1486 /*
1487 * This can happen, e.g., if an ER sends an extra message after
1488 * the station has disassociated (but not fully
1489 * deauthenticated).
1490 */
1491 wpa_printf(MSG_DEBUG, "WPS UPnP: Matching STA did not have EAPOL state machine initialized");
1492 return 0;
1493 }
1494
1495 p = os_zalloc(sizeof(*p));
1496 if (p == NULL)
1497 return -1;
1498 os_memcpy(p->addr, sta->addr, ETH_ALEN);
1499 p->msg = wpabuf_dup(msg);
1500 p->type = msg_type;
1501 p->next = hapd->wps->upnp_msgs;
1502 hapd->wps->upnp_msgs = p;
1503
1504 return eapol_auth_eap_pending_cb(sta->eapol_sm, sta->eapol_sm->eap);
1505 }
1506
1507
hostapd_wps_upnp_init(struct hostapd_data * hapd,struct wps_context * wps)1508 static int hostapd_wps_upnp_init(struct hostapd_data *hapd,
1509 struct wps_context *wps)
1510 {
1511 struct upnp_wps_device_ctx *ctx;
1512
1513 if (!hapd->conf->upnp_iface)
1514 return 0;
1515 ctx = os_zalloc(sizeof(*ctx));
1516 if (ctx == NULL)
1517 return -1;
1518
1519 ctx->rx_req_put_wlan_response = hostapd_rx_req_put_wlan_response;
1520 if (hapd->conf->ap_pin)
1521 ctx->ap_pin = os_strdup(hapd->conf->ap_pin);
1522
1523 hapd->wps_upnp = upnp_wps_device_init(ctx, wps, hapd,
1524 hapd->conf->upnp_iface);
1525 if (hapd->wps_upnp == NULL)
1526 return -1;
1527 wps->wps_upnp = hapd->wps_upnp;
1528
1529 return 0;
1530 }
1531
1532
hostapd_wps_upnp_deinit(struct hostapd_data * hapd)1533 static void hostapd_wps_upnp_deinit(struct hostapd_data *hapd)
1534 {
1535 upnp_wps_device_deinit(hapd->wps_upnp, hapd);
1536 }
1537
1538 #endif /* CONFIG_WPS_UPNP */
1539
1540
hostapd_wps_get_mib_sta(struct hostapd_data * hapd,const u8 * addr,char * buf,size_t buflen)1541 int hostapd_wps_get_mib_sta(struct hostapd_data *hapd, const u8 *addr,
1542 char *buf, size_t buflen)
1543 {
1544 if (hapd->wps == NULL)
1545 return 0;
1546 return wps_registrar_get_info(hapd->wps->registrar, addr, buf, buflen);
1547 }
1548
1549
hostapd_wps_ap_pin_timeout(void * eloop_data,void * user_ctx)1550 static void hostapd_wps_ap_pin_timeout(void *eloop_data, void *user_ctx)
1551 {
1552 struct hostapd_data *hapd = eloop_data;
1553 wpa_printf(MSG_DEBUG, "WPS: AP PIN timed out");
1554 hostapd_wps_ap_pin_disable(hapd);
1555 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_PIN_DISABLED);
1556 }
1557
1558
hostapd_wps_ap_pin_enable(struct hostapd_data * hapd,int timeout)1559 static void hostapd_wps_ap_pin_enable(struct hostapd_data *hapd, int timeout)
1560 {
1561 wpa_printf(MSG_DEBUG, "WPS: Enabling AP PIN (timeout=%d)", timeout);
1562 hapd->ap_pin_failures = 0;
1563 hapd->ap_pin_failures_consecutive = 0;
1564 hapd->conf->ap_setup_locked = 0;
1565 if (hapd->wps->ap_setup_locked) {
1566 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_SETUP_UNLOCKED);
1567 hapd->wps->ap_setup_locked = 0;
1568 wps_registrar_update_ie(hapd->wps->registrar);
1569 }
1570 eloop_cancel_timeout(hostapd_wps_ap_pin_timeout, hapd, NULL);
1571 if (timeout > 0)
1572 eloop_register_timeout(timeout, 0,
1573 hostapd_wps_ap_pin_timeout, hapd, NULL);
1574 }
1575
1576
wps_ap_pin_disable(struct hostapd_data * hapd,void * ctx)1577 static int wps_ap_pin_disable(struct hostapd_data *hapd, void *ctx)
1578 {
1579 os_free(hapd->conf->ap_pin);
1580 hapd->conf->ap_pin = NULL;
1581 #ifdef CONFIG_WPS_UPNP
1582 upnp_wps_set_ap_pin(hapd->wps_upnp, NULL);
1583 #endif /* CONFIG_WPS_UPNP */
1584 eloop_cancel_timeout(hostapd_wps_ap_pin_timeout, hapd, NULL);
1585 return 0;
1586 }
1587
1588
hostapd_wps_ap_pin_disable(struct hostapd_data * hapd)1589 void hostapd_wps_ap_pin_disable(struct hostapd_data *hapd)
1590 {
1591 wpa_printf(MSG_DEBUG, "WPS: Disabling AP PIN");
1592 hostapd_wps_for_each(hapd, wps_ap_pin_disable, NULL);
1593 }
1594
1595
1596 struct wps_ap_pin_data {
1597 char pin_txt[9];
1598 int timeout;
1599 };
1600
1601
wps_ap_pin_set(struct hostapd_data * hapd,void * ctx)1602 static int wps_ap_pin_set(struct hostapd_data *hapd, void *ctx)
1603 {
1604 struct wps_ap_pin_data *data = ctx;
1605
1606 if (!hapd->wps)
1607 return 0;
1608
1609 os_free(hapd->conf->ap_pin);
1610 hapd->conf->ap_pin = os_strdup(data->pin_txt);
1611 #ifdef CONFIG_WPS_UPNP
1612 upnp_wps_set_ap_pin(hapd->wps_upnp, data->pin_txt);
1613 #endif /* CONFIG_WPS_UPNP */
1614 hostapd_wps_ap_pin_enable(hapd, data->timeout);
1615 return 0;
1616 }
1617
1618
hostapd_wps_ap_pin_random(struct hostapd_data * hapd,int timeout)1619 const char * hostapd_wps_ap_pin_random(struct hostapd_data *hapd, int timeout)
1620 {
1621 unsigned int pin;
1622 struct wps_ap_pin_data data;
1623
1624 if (wps_generate_pin(&pin) < 0)
1625 return NULL;
1626 os_snprintf(data.pin_txt, sizeof(data.pin_txt), "%08u", pin);
1627 data.timeout = timeout;
1628 hostapd_wps_for_each(hapd, wps_ap_pin_set, &data);
1629 return hapd->conf->ap_pin;
1630 }
1631
1632
hostapd_wps_ap_pin_get(struct hostapd_data * hapd)1633 const char * hostapd_wps_ap_pin_get(struct hostapd_data *hapd)
1634 {
1635 return hapd->conf->ap_pin;
1636 }
1637
1638
hostapd_wps_ap_pin_set(struct hostapd_data * hapd,const char * pin,int timeout)1639 int hostapd_wps_ap_pin_set(struct hostapd_data *hapd, const char *pin,
1640 int timeout)
1641 {
1642 struct wps_ap_pin_data data;
1643 int ret;
1644
1645 ret = os_snprintf(data.pin_txt, sizeof(data.pin_txt), "%s", pin);
1646 if (os_snprintf_error(sizeof(data.pin_txt), ret))
1647 return -1;
1648 data.timeout = timeout;
1649 return hostapd_wps_for_each(hapd, wps_ap_pin_set, &data);
1650 }
1651
1652
wps_update_ie(struct hostapd_data * hapd,void * ctx)1653 static int wps_update_ie(struct hostapd_data *hapd, void *ctx)
1654 {
1655 if (hapd->wps)
1656 wps_registrar_update_ie(hapd->wps->registrar);
1657 return 0;
1658 }
1659
1660
hostapd_wps_update_ie(struct hostapd_data * hapd)1661 void hostapd_wps_update_ie(struct hostapd_data *hapd)
1662 {
1663 hostapd_wps_for_each(hapd, wps_update_ie, NULL);
1664 }
1665
1666
hostapd_wps_config_ap(struct hostapd_data * hapd,const char * ssid,const char * auth,const char * encr,const char * key)1667 int hostapd_wps_config_ap(struct hostapd_data *hapd, const char *ssid,
1668 const char *auth, const char *encr, const char *key)
1669 {
1670 struct wps_credential cred;
1671 size_t len;
1672
1673 os_memset(&cred, 0, sizeof(cred));
1674
1675 len = os_strlen(ssid);
1676 if ((len & 1) || len > 2 * sizeof(cred.ssid) ||
1677 hexstr2bin(ssid, cred.ssid, len / 2))
1678 return -1;
1679 cred.ssid_len = len / 2;
1680
1681 if (os_strncmp(auth, "OPEN", 4) == 0)
1682 cred.auth_type = WPS_AUTH_OPEN;
1683 else if (os_strncmp(auth, "WPAPSK", 6) == 0)
1684 cred.auth_type = WPS_AUTH_WPAPSK;
1685 else if (os_strncmp(auth, "WPA2PSK", 7) == 0)
1686 cred.auth_type = WPS_AUTH_WPA2PSK;
1687 else
1688 return -1;
1689
1690 if (encr) {
1691 if (os_strncmp(encr, "NONE", 4) == 0)
1692 cred.encr_type = WPS_ENCR_NONE;
1693 else if (os_strncmp(encr, "TKIP", 4) == 0)
1694 cred.encr_type = WPS_ENCR_TKIP;
1695 else if (os_strncmp(encr, "CCMP", 4) == 0)
1696 cred.encr_type = WPS_ENCR_AES;
1697 else
1698 return -1;
1699 } else
1700 cred.encr_type = WPS_ENCR_NONE;
1701
1702 if (key) {
1703 len = os_strlen(key);
1704 if ((len & 1) || len > 2 * sizeof(cred.key) ||
1705 hexstr2bin(key, cred.key, len / 2))
1706 return -1;
1707 cred.key_len = len / 2;
1708 }
1709
1710 return wps_registrar_config_ap(hapd->wps->registrar, &cred);
1711 }
1712
1713
1714 #ifdef CONFIG_WPS_NFC
1715
1716 struct wps_nfc_password_token_data {
1717 const u8 *oob_dev_pw;
1718 size_t oob_dev_pw_len;
1719 int added;
1720 };
1721
1722
wps_add_nfc_password_token(struct hostapd_data * hapd,void * ctx)1723 static int wps_add_nfc_password_token(struct hostapd_data *hapd, void *ctx)
1724 {
1725 struct wps_nfc_password_token_data *data = ctx;
1726 int ret;
1727
1728 if (hapd->wps == NULL)
1729 return 0;
1730 ret = wps_registrar_add_nfc_password_token(hapd->wps->registrar,
1731 data->oob_dev_pw,
1732 data->oob_dev_pw_len);
1733 if (ret == 0)
1734 data->added++;
1735 return ret;
1736 }
1737
1738
hostapd_wps_add_nfc_password_token(struct hostapd_data * hapd,struct wps_parse_attr * attr)1739 static int hostapd_wps_add_nfc_password_token(struct hostapd_data *hapd,
1740 struct wps_parse_attr *attr)
1741 {
1742 struct wps_nfc_password_token_data data;
1743
1744 data.oob_dev_pw = attr->oob_dev_password;
1745 data.oob_dev_pw_len = attr->oob_dev_password_len;
1746 data.added = 0;
1747 if (hostapd_wps_for_each(hapd, wps_add_nfc_password_token, &data) < 0)
1748 return -1;
1749 return data.added ? 0 : -1;
1750 }
1751
1752
hostapd_wps_nfc_tag_process(struct hostapd_data * hapd,const struct wpabuf * wps)1753 static int hostapd_wps_nfc_tag_process(struct hostapd_data *hapd,
1754 const struct wpabuf *wps)
1755 {
1756 struct wps_parse_attr attr;
1757
1758 wpa_hexdump_buf(MSG_DEBUG, "WPS: Received NFC tag payload", wps);
1759
1760 if (wps_parse_msg(wps, &attr)) {
1761 wpa_printf(MSG_DEBUG, "WPS: Ignore invalid data from NFC tag");
1762 return -1;
1763 }
1764
1765 if (attr.oob_dev_password)
1766 return hostapd_wps_add_nfc_password_token(hapd, &attr);
1767
1768 wpa_printf(MSG_DEBUG, "WPS: Ignore unrecognized NFC tag");
1769 return -1;
1770 }
1771
1772
hostapd_wps_nfc_tag_read(struct hostapd_data * hapd,const struct wpabuf * data)1773 int hostapd_wps_nfc_tag_read(struct hostapd_data *hapd,
1774 const struct wpabuf *data)
1775 {
1776 const struct wpabuf *wps = data;
1777 struct wpabuf *tmp = NULL;
1778 int ret;
1779
1780 if (wpabuf_len(data) < 4)
1781 return -1;
1782
1783 if (*wpabuf_head_u8(data) != 0x10) {
1784 /* Assume this contains full NDEF record */
1785 tmp = ndef_parse_wifi(data);
1786 if (tmp == NULL) {
1787 wpa_printf(MSG_DEBUG, "WPS: Could not parse NDEF");
1788 return -1;
1789 }
1790 wps = tmp;
1791 }
1792
1793 ret = hostapd_wps_nfc_tag_process(hapd, wps);
1794 wpabuf_free(tmp);
1795 return ret;
1796 }
1797
1798
hostapd_wps_nfc_config_token(struct hostapd_data * hapd,int ndef)1799 struct wpabuf * hostapd_wps_nfc_config_token(struct hostapd_data *hapd,
1800 int ndef)
1801 {
1802 struct wpabuf *ret;
1803
1804 if (hapd->wps == NULL)
1805 return NULL;
1806
1807 ret = wps_get_oob_cred(hapd->wps, hostapd_wps_rf_band_cb(hapd),
1808 hapd->iconf->channel);
1809 if (ndef && ret) {
1810 struct wpabuf *tmp;
1811 tmp = ndef_build_wifi(ret);
1812 wpabuf_free(ret);
1813 if (tmp == NULL)
1814 return NULL;
1815 ret = tmp;
1816 }
1817
1818 return ret;
1819 }
1820
1821
hostapd_wps_nfc_hs_cr(struct hostapd_data * hapd,int ndef)1822 struct wpabuf * hostapd_wps_nfc_hs_cr(struct hostapd_data *hapd, int ndef)
1823 {
1824 struct wpabuf *ret;
1825
1826 if (hapd->wps == NULL)
1827 return NULL;
1828
1829 if (hapd->conf->wps_nfc_dh_pubkey == NULL) {
1830 struct wps_context *wps = hapd->wps;
1831 if (wps_nfc_gen_dh(&hapd->conf->wps_nfc_dh_pubkey,
1832 &hapd->conf->wps_nfc_dh_privkey) < 0)
1833 return NULL;
1834 hostapd_wps_nfc_clear(wps);
1835 wps->ap_nfc_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER;
1836 wps->ap_nfc_dh_pubkey =
1837 wpabuf_dup(hapd->conf->wps_nfc_dh_pubkey);
1838 wps->ap_nfc_dh_privkey =
1839 wpabuf_dup(hapd->conf->wps_nfc_dh_privkey);
1840 if (!wps->ap_nfc_dh_pubkey || !wps->ap_nfc_dh_privkey) {
1841 hostapd_wps_nfc_clear(wps);
1842 return NULL;
1843 }
1844 }
1845
1846 ret = wps_build_nfc_handover_sel(hapd->wps,
1847 hapd->conf->wps_nfc_dh_pubkey,
1848 hapd->own_addr, hapd->iface->freq);
1849
1850 if (ndef && ret) {
1851 struct wpabuf *tmp;
1852 tmp = ndef_build_wifi(ret);
1853 wpabuf_free(ret);
1854 if (tmp == NULL)
1855 return NULL;
1856 ret = tmp;
1857 }
1858
1859 return ret;
1860 }
1861
1862
hostapd_wps_nfc_report_handover(struct hostapd_data * hapd,const struct wpabuf * req,const struct wpabuf * sel)1863 int hostapd_wps_nfc_report_handover(struct hostapd_data *hapd,
1864 const struct wpabuf *req,
1865 const struct wpabuf *sel)
1866 {
1867 struct wpabuf *wps;
1868 int ret = -1;
1869 u16 wsc_len;
1870 const u8 *pos;
1871 struct wpabuf msg;
1872 struct wps_parse_attr attr;
1873 u16 dev_pw_id;
1874
1875 /*
1876 * Enrollee/station is always initiator of the NFC connection handover,
1877 * so use the request message here to find Enrollee public key hash.
1878 */
1879 wps = ndef_parse_wifi(req);
1880 if (wps == NULL)
1881 return -1;
1882 wpa_printf(MSG_DEBUG, "WPS: Received application/vnd.wfa.wsc "
1883 "payload from NFC connection handover");
1884 wpa_hexdump_buf(MSG_DEBUG, "WPS: NFC payload", wps);
1885 if (wpabuf_len(wps) < 2) {
1886 wpa_printf(MSG_DEBUG, "WPS: Too short Wi-Fi Handover Request "
1887 "Message");
1888 goto out;
1889 }
1890 pos = wpabuf_head(wps);
1891 wsc_len = WPA_GET_BE16(pos);
1892 if (wsc_len > wpabuf_len(wps) - 2) {
1893 wpa_printf(MSG_DEBUG, "WPS: Invalid WSC attribute length (%u) "
1894 "in rt Wi-Fi Handover Request Message", wsc_len);
1895 goto out;
1896 }
1897 pos += 2;
1898
1899 wpa_hexdump(MSG_DEBUG,
1900 "WPS: WSC attributes in Wi-Fi Handover Request Message",
1901 pos, wsc_len);
1902 if (wsc_len < wpabuf_len(wps) - 2) {
1903 wpa_hexdump(MSG_DEBUG,
1904 "WPS: Ignore extra data after WSC attributes",
1905 pos + wsc_len, wpabuf_len(wps) - 2 - wsc_len);
1906 }
1907
1908 wpabuf_set(&msg, pos, wsc_len);
1909 ret = wps_parse_msg(&msg, &attr);
1910 if (ret < 0) {
1911 wpa_printf(MSG_DEBUG, "WPS: Could not parse WSC attributes in "
1912 "Wi-Fi Handover Request Message");
1913 goto out;
1914 }
1915
1916 if (attr.oob_dev_password == NULL ||
1917 attr.oob_dev_password_len < WPS_OOB_PUBKEY_HASH_LEN + 2) {
1918 wpa_printf(MSG_DEBUG, "WPS: No Out-of-Band Device Password "
1919 "included in Wi-Fi Handover Request Message");
1920 ret = -1;
1921 goto out;
1922 }
1923
1924 if (attr.uuid_e == NULL) {
1925 wpa_printf(MSG_DEBUG, "WPS: No UUID-E included in Wi-Fi "
1926 "Handover Request Message");
1927 ret = -1;
1928 goto out;
1929 }
1930
1931 wpa_hexdump(MSG_DEBUG, "WPS: UUID-E", attr.uuid_e, WPS_UUID_LEN);
1932
1933 wpa_hexdump(MSG_DEBUG, "WPS: Out-of-Band Device Password",
1934 attr.oob_dev_password, attr.oob_dev_password_len);
1935 dev_pw_id = WPA_GET_BE16(attr.oob_dev_password +
1936 WPS_OOB_PUBKEY_HASH_LEN);
1937 if (dev_pw_id != DEV_PW_NFC_CONNECTION_HANDOVER) {
1938 wpa_printf(MSG_DEBUG, "WPS: Unexpected OOB Device Password ID "
1939 "%u in Wi-Fi Handover Request Message", dev_pw_id);
1940 ret = -1;
1941 goto out;
1942 }
1943 wpa_hexdump(MSG_DEBUG, "WPS: Enrollee Public Key hash",
1944 attr.oob_dev_password, WPS_OOB_PUBKEY_HASH_LEN);
1945
1946 ret = wps_registrar_add_nfc_pw_token(hapd->wps->registrar,
1947 attr.oob_dev_password,
1948 DEV_PW_NFC_CONNECTION_HANDOVER,
1949 NULL, 0, 1);
1950
1951 out:
1952 wpabuf_free(wps);
1953 return ret;
1954 }
1955
1956
hostapd_wps_nfc_token_gen(struct hostapd_data * hapd,int ndef)1957 struct wpabuf * hostapd_wps_nfc_token_gen(struct hostapd_data *hapd, int ndef)
1958 {
1959 if (hapd->conf->wps_nfc_pw_from_config) {
1960 return wps_nfc_token_build(ndef,
1961 hapd->conf->wps_nfc_dev_pw_id,
1962 hapd->conf->wps_nfc_dh_pubkey,
1963 hapd->conf->wps_nfc_dev_pw);
1964 }
1965
1966 return wps_nfc_token_gen(ndef, &hapd->conf->wps_nfc_dev_pw_id,
1967 &hapd->conf->wps_nfc_dh_pubkey,
1968 &hapd->conf->wps_nfc_dh_privkey,
1969 &hapd->conf->wps_nfc_dev_pw);
1970 }
1971
1972
hostapd_wps_nfc_token_enable(struct hostapd_data * hapd)1973 int hostapd_wps_nfc_token_enable(struct hostapd_data *hapd)
1974 {
1975 struct wps_context *wps = hapd->wps;
1976 struct wpabuf *pw;
1977
1978 if (wps == NULL)
1979 return -1;
1980
1981 if (!hapd->conf->wps_nfc_dh_pubkey ||
1982 !hapd->conf->wps_nfc_dh_privkey ||
1983 !hapd->conf->wps_nfc_dev_pw ||
1984 !hapd->conf->wps_nfc_dev_pw_id)
1985 return -1;
1986
1987 hostapd_wps_nfc_clear(wps);
1988 wpa_printf(MSG_DEBUG,
1989 "WPS: Enable NFC Tag (Dev Pw Id %u) for AP interface %s (context %p)",
1990 hapd->conf->wps_nfc_dev_pw_id, hapd->conf->iface, wps);
1991 wps->ap_nfc_dev_pw_id = hapd->conf->wps_nfc_dev_pw_id;
1992 wps->ap_nfc_dh_pubkey = wpabuf_dup(hapd->conf->wps_nfc_dh_pubkey);
1993 wps->ap_nfc_dh_privkey = wpabuf_dup(hapd->conf->wps_nfc_dh_privkey);
1994 pw = hapd->conf->wps_nfc_dev_pw;
1995 wps->ap_nfc_dev_pw = wpabuf_alloc(
1996 wpabuf_len(pw) * 2 + 1);
1997 if (wps->ap_nfc_dev_pw) {
1998 wpa_snprintf_hex_uppercase(
1999 (char *) wpabuf_put(wps->ap_nfc_dev_pw,
2000 wpabuf_len(pw) * 2),
2001 wpabuf_len(pw) * 2 + 1,
2002 wpabuf_head(pw), wpabuf_len(pw));
2003 }
2004
2005 if (!wps->ap_nfc_dh_pubkey || !wps->ap_nfc_dh_privkey ||
2006 !wps->ap_nfc_dev_pw) {
2007 hostapd_wps_nfc_clear(wps);
2008 return -1;
2009 }
2010
2011 return 0;
2012 }
2013
2014
hostapd_wps_nfc_token_disable(struct hostapd_data * hapd)2015 void hostapd_wps_nfc_token_disable(struct hostapd_data *hapd)
2016 {
2017 wpa_printf(MSG_DEBUG, "WPS: Disable NFC token for AP interface %s",
2018 hapd->conf->iface);
2019 hostapd_wps_nfc_clear(hapd->wps);
2020 }
2021
2022 #endif /* CONFIG_WPS_NFC */
2023