1 /*
2 * hostapd / WPS integration
3 * Copyright (c) 2008-2010, 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 "crypto/dh_groups.h"
15 #include "common/wpa_ctrl.h"
16 #include "common/ieee802_11_defs.h"
17 #include "common/ieee802_11_common.h"
18 #include "eapol_auth/eapol_auth_sm.h"
19 #include "eapol_auth/eapol_auth_sm_i.h"
20 #include "wps/wps.h"
21 #include "wps/wps_defs.h"
22 #include "wps/wps_dev_attr.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 static void hostapd_wps_ap_pin_timeout(void *eloop_data, void *user_ctx);
42
43
44 struct wps_for_each_data {
45 int (*func)(struct hostapd_data *h, void *ctx);
46 void *ctx;
47 };
48
49
wps_for_each(struct hostapd_iface * iface,void * ctx)50 static int wps_for_each(struct hostapd_iface *iface, void *ctx)
51 {
52 struct wps_for_each_data *data = ctx;
53 size_t j;
54
55 if (iface == NULL)
56 return 0;
57 for (j = 0; j < iface->num_bss; j++) {
58 struct hostapd_data *hapd = iface->bss[j];
59 int ret = data->func(hapd, data->ctx);
60 if (ret)
61 return ret;
62 }
63
64 return 0;
65 }
66
67
hostapd_wps_for_each(struct hostapd_data * hapd,int (* func)(struct hostapd_data * h,void * ctx),void * ctx)68 static int hostapd_wps_for_each(struct hostapd_data *hapd,
69 int (*func)(struct hostapd_data *h, void *ctx),
70 void *ctx)
71 {
72 struct hostapd_iface *iface = hapd->iface;
73 struct wps_for_each_data data;
74 data.func = func;
75 data.ctx = ctx;
76 if (iface->for_each_interface == NULL)
77 return wps_for_each(iface, &data);
78 return iface->for_each_interface(iface->interfaces, wps_for_each,
79 &data);
80 }
81
82
hostapd_wps_new_psk_cb(void * ctx,const u8 * mac_addr,const u8 * psk,size_t psk_len)83 static int hostapd_wps_new_psk_cb(void *ctx, const u8 *mac_addr, const u8 *psk,
84 size_t psk_len)
85 {
86 struct hostapd_data *hapd = ctx;
87 struct hostapd_wpa_psk *p;
88 struct hostapd_ssid *ssid = &hapd->conf->ssid;
89
90 wpa_printf(MSG_DEBUG, "Received new WPA/WPA2-PSK from WPS for STA "
91 MACSTR, MAC2STR(mac_addr));
92 wpa_hexdump_key(MSG_DEBUG, "Per-device PSK", psk, psk_len);
93
94 if (psk_len != PMK_LEN) {
95 wpa_printf(MSG_DEBUG, "Unexpected PSK length %lu",
96 (unsigned long) psk_len);
97 return -1;
98 }
99
100 /* Add the new PSK to runtime PSK list */
101 p = os_zalloc(sizeof(*p));
102 if (p == NULL)
103 return -1;
104 os_memcpy(p->addr, mac_addr, ETH_ALEN);
105 os_memcpy(p->psk, psk, PMK_LEN);
106
107 p->next = ssid->wpa_psk;
108 ssid->wpa_psk = p;
109
110 if (ssid->wpa_psk_file) {
111 FILE *f;
112 char hex[PMK_LEN * 2 + 1];
113 /* Add the new PSK to PSK list file */
114 f = fopen(ssid->wpa_psk_file, "a");
115 if (f == NULL) {
116 wpa_printf(MSG_DEBUG, "Failed to add the PSK to "
117 "'%s'", ssid->wpa_psk_file);
118 return -1;
119 }
120
121 wpa_snprintf_hex(hex, sizeof(hex), psk, psk_len);
122 fprintf(f, MACSTR " %s\n", MAC2STR(mac_addr), hex);
123 fclose(f);
124 }
125
126 return 0;
127 }
128
129
hostapd_wps_set_ie_cb(void * ctx,struct wpabuf * beacon_ie,struct wpabuf * probe_resp_ie)130 static int hostapd_wps_set_ie_cb(void *ctx, struct wpabuf *beacon_ie,
131 struct wpabuf *probe_resp_ie)
132 {
133 struct hostapd_data *hapd = ctx;
134 wpabuf_free(hapd->wps_beacon_ie);
135 hapd->wps_beacon_ie = beacon_ie;
136 wpabuf_free(hapd->wps_probe_resp_ie);
137 hapd->wps_probe_resp_ie = probe_resp_ie;
138 if (hapd->beacon_set_done)
139 ieee802_11_set_beacon(hapd);
140 return hostapd_set_ap_wps_ie(hapd);
141 }
142
143
hostapd_wps_pin_needed_cb(void * ctx,const u8 * uuid_e,const struct wps_device_data * dev)144 static void hostapd_wps_pin_needed_cb(void *ctx, const u8 *uuid_e,
145 const struct wps_device_data *dev)
146 {
147 struct hostapd_data *hapd = ctx;
148 char uuid[40], txt[400];
149 int len;
150 char devtype[WPS_DEV_TYPE_BUFSIZE];
151 if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
152 return;
153 wpa_printf(MSG_DEBUG, "WPS: PIN needed for E-UUID %s", uuid);
154 len = os_snprintf(txt, sizeof(txt), WPS_EVENT_PIN_NEEDED
155 "%s " MACSTR " [%s|%s|%s|%s|%s|%s]",
156 uuid, MAC2STR(dev->mac_addr), dev->device_name,
157 dev->manufacturer, dev->model_name,
158 dev->model_number, dev->serial_number,
159 wps_dev_type_bin2str(dev->pri_dev_type, devtype,
160 sizeof(devtype)));
161 if (len > 0 && len < (int) sizeof(txt))
162 wpa_msg(hapd->msg_ctx, MSG_INFO, "%s", txt);
163
164 if (hapd->conf->wps_pin_requests) {
165 FILE *f;
166 struct os_time t;
167 f = fopen(hapd->conf->wps_pin_requests, "a");
168 if (f == NULL)
169 return;
170 os_get_time(&t);
171 fprintf(f, "%ld\t%s\t" MACSTR "\t%s\t%s\t%s\t%s\t%s"
172 "\t%s\n",
173 t.sec, uuid, MAC2STR(dev->mac_addr), dev->device_name,
174 dev->manufacturer, dev->model_name, dev->model_number,
175 dev->serial_number,
176 wps_dev_type_bin2str(dev->pri_dev_type, devtype,
177 sizeof(devtype)));
178 fclose(f);
179 }
180 }
181
182
183 struct wps_stop_reg_data {
184 struct hostapd_data *current_hapd;
185 const u8 *uuid_e;
186 };
187
wps_stop_registrar(struct hostapd_data * hapd,void * ctx)188 static int wps_stop_registrar(struct hostapd_data *hapd, void *ctx)
189 {
190 struct wps_stop_reg_data *data = ctx;
191 if (hapd != data->current_hapd && hapd->wps != NULL)
192 wps_registrar_complete(hapd->wps->registrar, data->uuid_e);
193 return 0;
194 }
195
196
hostapd_wps_reg_success_cb(void * ctx,const u8 * mac_addr,const u8 * uuid_e)197 static void hostapd_wps_reg_success_cb(void *ctx, const u8 *mac_addr,
198 const u8 *uuid_e)
199 {
200 struct hostapd_data *hapd = ctx;
201 char uuid[40];
202 struct wps_stop_reg_data data;
203 if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
204 return;
205 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_REG_SUCCESS MACSTR " %s",
206 MAC2STR(mac_addr), uuid);
207 if (hapd->wps_reg_success_cb)
208 hapd->wps_reg_success_cb(hapd->wps_reg_success_cb_ctx,
209 mac_addr, uuid_e);
210 data.current_hapd = hapd;
211 data.uuid_e = uuid_e;
212 hostapd_wps_for_each(hapd, wps_stop_registrar, &data);
213 }
214
215
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)216 static void hostapd_wps_enrollee_seen_cb(void *ctx, const u8 *addr,
217 const u8 *uuid_e,
218 const u8 *pri_dev_type,
219 u16 config_methods,
220 u16 dev_password_id, u8 request_type,
221 const char *dev_name)
222 {
223 struct hostapd_data *hapd = ctx;
224 char uuid[40];
225 char devtype[WPS_DEV_TYPE_BUFSIZE];
226 if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
227 return;
228 if (dev_name == NULL)
229 dev_name = "";
230 wpa_msg_ctrl(hapd->msg_ctx, MSG_INFO, WPS_EVENT_ENROLLEE_SEEN MACSTR
231 " %s %s 0x%x %u %u [%s]",
232 MAC2STR(addr), uuid,
233 wps_dev_type_bin2str(pri_dev_type, devtype,
234 sizeof(devtype)),
235 config_methods, dev_password_id, request_type, dev_name);
236 }
237
238
str_starts(const char * str,const char * start)239 static int str_starts(const char *str, const char *start)
240 {
241 return os_strncmp(str, start, os_strlen(start)) == 0;
242 }
243
244
wps_reload_config(void * eloop_data,void * user_ctx)245 static void wps_reload_config(void *eloop_data, void *user_ctx)
246 {
247 struct hostapd_iface *iface = eloop_data;
248
249 wpa_printf(MSG_DEBUG, "WPS: Reload configuration data");
250 if (iface->reload_config(iface) < 0) {
251 wpa_printf(MSG_WARNING, "WPS: Failed to reload the updated "
252 "configuration");
253 }
254 }
255
256
hapd_new_ap_event(struct hostapd_data * hapd,const u8 * attr,size_t attr_len)257 static void hapd_new_ap_event(struct hostapd_data *hapd, const u8 *attr,
258 size_t attr_len)
259 {
260 size_t blen = attr_len * 2 + 1;
261 char *buf = os_malloc(blen);
262 if (buf) {
263 wpa_snprintf_hex(buf, blen, attr, attr_len);
264 wpa_msg(hapd->msg_ctx, MSG_INFO,
265 WPS_EVENT_NEW_AP_SETTINGS "%s", buf);
266 os_free(buf);
267 }
268 }
269
270
hapd_wps_cred_cb(struct hostapd_data * hapd,void * ctx)271 static int hapd_wps_cred_cb(struct hostapd_data *hapd, void *ctx)
272 {
273 const struct wps_credential *cred = ctx;
274 FILE *oconf, *nconf;
275 size_t len, i;
276 char *tmp_fname;
277 char buf[1024];
278 int multi_bss;
279 int wpa;
280
281 if (hapd->wps == NULL)
282 return 0;
283
284 wpa_hexdump_key(MSG_DEBUG, "WPS: Received Credential attribute",
285 cred->cred_attr, cred->cred_attr_len);
286
287 wpa_printf(MSG_DEBUG, "WPS: Received new AP Settings");
288 wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID", cred->ssid, cred->ssid_len);
289 wpa_printf(MSG_DEBUG, "WPS: Authentication Type 0x%x",
290 cred->auth_type);
291 wpa_printf(MSG_DEBUG, "WPS: Encryption Type 0x%x", cred->encr_type);
292 wpa_printf(MSG_DEBUG, "WPS: Network Key Index %d", cred->key_idx);
293 wpa_hexdump_key(MSG_DEBUG, "WPS: Network Key",
294 cred->key, cred->key_len);
295 wpa_printf(MSG_DEBUG, "WPS: MAC Address " MACSTR,
296 MAC2STR(cred->mac_addr));
297
298 if ((hapd->conf->wps_cred_processing == 1 ||
299 hapd->conf->wps_cred_processing == 2) && cred->cred_attr) {
300 hapd_new_ap_event(hapd, cred->cred_attr, cred->cred_attr_len);
301 } else if (hapd->conf->wps_cred_processing == 1 ||
302 hapd->conf->wps_cred_processing == 2) {
303 struct wpabuf *attr;
304 attr = wpabuf_alloc(200);
305 if (attr && wps_build_credential_wrap(attr, cred) == 0)
306 hapd_new_ap_event(hapd, wpabuf_head_u8(attr),
307 wpabuf_len(attr));
308 wpabuf_free(attr);
309 } else
310 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_NEW_AP_SETTINGS);
311
312 if (hapd->conf->wps_cred_processing == 1)
313 return 0;
314
315 os_memcpy(hapd->wps->ssid, cred->ssid, cred->ssid_len);
316 hapd->wps->ssid_len = cred->ssid_len;
317 hapd->wps->encr_types = cred->encr_type;
318 hapd->wps->auth_types = cred->auth_type;
319 if (cred->key_len == 0) {
320 os_free(hapd->wps->network_key);
321 hapd->wps->network_key = NULL;
322 hapd->wps->network_key_len = 0;
323 } else {
324 if (hapd->wps->network_key == NULL ||
325 hapd->wps->network_key_len < cred->key_len) {
326 hapd->wps->network_key_len = 0;
327 os_free(hapd->wps->network_key);
328 hapd->wps->network_key = os_malloc(cred->key_len);
329 if (hapd->wps->network_key == NULL)
330 return -1;
331 }
332 hapd->wps->network_key_len = cred->key_len;
333 os_memcpy(hapd->wps->network_key, cred->key, cred->key_len);
334 }
335 hapd->wps->wps_state = WPS_STATE_CONFIGURED;
336
337 len = os_strlen(hapd->iface->config_fname) + 5;
338 tmp_fname = os_malloc(len);
339 if (tmp_fname == NULL)
340 return -1;
341 os_snprintf(tmp_fname, len, "%s-new", hapd->iface->config_fname);
342
343 oconf = fopen(hapd->iface->config_fname, "r");
344 if (oconf == NULL) {
345 wpa_printf(MSG_WARNING, "WPS: Could not open current "
346 "configuration file");
347 os_free(tmp_fname);
348 return -1;
349 }
350
351 nconf = fopen(tmp_fname, "w");
352 if (nconf == NULL) {
353 wpa_printf(MSG_WARNING, "WPS: Could not write updated "
354 "configuration file");
355 os_free(tmp_fname);
356 fclose(oconf);
357 return -1;
358 }
359
360 fprintf(nconf, "# WPS configuration - START\n");
361
362 fprintf(nconf, "wps_state=2\n");
363
364 fprintf(nconf, "ssid=");
365 for (i = 0; i < cred->ssid_len; i++)
366 fputc(cred->ssid[i], nconf);
367 fprintf(nconf, "\n");
368
369 if ((cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA2PSK)) &&
370 (cred->auth_type & (WPS_AUTH_WPA | WPS_AUTH_WPAPSK)))
371 wpa = 3;
372 else if (cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA2PSK))
373 wpa = 2;
374 else if (cred->auth_type & (WPS_AUTH_WPA | WPS_AUTH_WPAPSK))
375 wpa = 1;
376 else
377 wpa = 0;
378
379 if (wpa) {
380 char *prefix;
381 fprintf(nconf, "wpa=%d\n", wpa);
382
383 fprintf(nconf, "wpa_key_mgmt=");
384 prefix = "";
385 if (cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA)) {
386 fprintf(nconf, "WPA-EAP");
387 prefix = " ";
388 }
389 if (cred->auth_type & (WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK))
390 fprintf(nconf, "%sWPA-PSK", prefix);
391 fprintf(nconf, "\n");
392
393 fprintf(nconf, "wpa_pairwise=");
394 prefix = "";
395 if (cred->encr_type & WPS_ENCR_AES) {
396 fprintf(nconf, "CCMP");
397 prefix = " ";
398 }
399 if (cred->encr_type & WPS_ENCR_TKIP) {
400 fprintf(nconf, "%sTKIP", prefix);
401 }
402 fprintf(nconf, "\n");
403
404 if (cred->key_len >= 8 && cred->key_len < 64) {
405 fprintf(nconf, "wpa_passphrase=");
406 for (i = 0; i < cred->key_len; i++)
407 fputc(cred->key[i], nconf);
408 fprintf(nconf, "\n");
409 } else if (cred->key_len == 64) {
410 fprintf(nconf, "wpa_psk=");
411 for (i = 0; i < cred->key_len; i++)
412 fputc(cred->key[i], nconf);
413 fprintf(nconf, "\n");
414 } else {
415 wpa_printf(MSG_WARNING, "WPS: Invalid key length %lu "
416 "for WPA/WPA2",
417 (unsigned long) cred->key_len);
418 }
419
420 fprintf(nconf, "auth_algs=1\n");
421 } else {
422 if ((cred->auth_type & WPS_AUTH_OPEN) &&
423 (cred->auth_type & WPS_AUTH_SHARED))
424 fprintf(nconf, "auth_algs=3\n");
425 else if (cred->auth_type & WPS_AUTH_SHARED)
426 fprintf(nconf, "auth_algs=2\n");
427 else
428 fprintf(nconf, "auth_algs=1\n");
429
430 if (cred->encr_type & WPS_ENCR_WEP && cred->key_idx <= 4) {
431 int key_idx = cred->key_idx;
432 if (key_idx)
433 key_idx--;
434 fprintf(nconf, "wep_default_key=%d\n", key_idx);
435 fprintf(nconf, "wep_key%d=", key_idx);
436 if (cred->key_len == 10 || cred->key_len == 26) {
437 /* WEP key as a hex string */
438 for (i = 0; i < cred->key_len; i++)
439 fputc(cred->key[i], nconf);
440 } else {
441 /* Raw WEP key; convert to hex */
442 for (i = 0; i < cred->key_len; i++)
443 fprintf(nconf, "%02x", cred->key[i]);
444 }
445 fprintf(nconf, "\n");
446 }
447 }
448
449 fprintf(nconf, "# WPS configuration - END\n");
450
451 multi_bss = 0;
452 while (fgets(buf, sizeof(buf), oconf)) {
453 if (os_strncmp(buf, "bss=", 4) == 0)
454 multi_bss = 1;
455 if (!multi_bss &&
456 (str_starts(buf, "ssid=") ||
457 str_starts(buf, "auth_algs=") ||
458 str_starts(buf, "wep_default_key=") ||
459 str_starts(buf, "wep_key") ||
460 str_starts(buf, "wps_state=") ||
461 str_starts(buf, "wpa=") ||
462 str_starts(buf, "wpa_psk=") ||
463 str_starts(buf, "wpa_pairwise=") ||
464 str_starts(buf, "rsn_pairwise=") ||
465 str_starts(buf, "wpa_key_mgmt=") ||
466 str_starts(buf, "wpa_passphrase="))) {
467 fprintf(nconf, "#WPS# %s", buf);
468 } else
469 fprintf(nconf, "%s", buf);
470 }
471
472 fclose(nconf);
473 fclose(oconf);
474
475 if (rename(tmp_fname, hapd->iface->config_fname) < 0) {
476 wpa_printf(MSG_WARNING, "WPS: Failed to rename the updated "
477 "configuration file: %s", strerror(errno));
478 os_free(tmp_fname);
479 return -1;
480 }
481
482 os_free(tmp_fname);
483
484 /* Schedule configuration reload after short period of time to allow
485 * EAP-WSC to be finished.
486 */
487 eloop_register_timeout(0, 100000, wps_reload_config, hapd->iface,
488 NULL);
489
490 wpa_printf(MSG_DEBUG, "WPS: AP configuration updated");
491
492 return 0;
493 }
494
495
hostapd_wps_cred_cb(void * ctx,const struct wps_credential * cred)496 static int hostapd_wps_cred_cb(void *ctx, const struct wps_credential *cred)
497 {
498 struct hostapd_data *hapd = ctx;
499 return hostapd_wps_for_each(hapd, hapd_wps_cred_cb, (void *) cred);
500 }
501
502
hostapd_wps_reenable_ap_pin(void * eloop_data,void * user_ctx)503 static void hostapd_wps_reenable_ap_pin(void *eloop_data, void *user_ctx)
504 {
505 struct hostapd_data *hapd = eloop_data;
506
507 if (hapd->conf->ap_setup_locked)
508 return;
509 if (hapd->ap_pin_failures_consecutive >= 10)
510 return;
511
512 wpa_printf(MSG_DEBUG, "WPS: Re-enable AP PIN");
513 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_SETUP_UNLOCKED);
514 hapd->wps->ap_setup_locked = 0;
515 wps_registrar_update_ie(hapd->wps->registrar);
516 }
517
518
wps_pwd_auth_fail(struct hostapd_data * hapd,void * ctx)519 static int wps_pwd_auth_fail(struct hostapd_data *hapd, void *ctx)
520 {
521 struct wps_event_pwd_auth_fail *data = ctx;
522
523 if (!data->enrollee || hapd->conf->ap_pin == NULL || hapd->wps == NULL)
524 return 0;
525
526 /*
527 * Registrar failed to prove its knowledge of the AP PIN. Lock AP setup
528 * for some time if this happens multiple times to slow down brute
529 * force attacks.
530 */
531 hapd->ap_pin_failures++;
532 hapd->ap_pin_failures_consecutive++;
533 wpa_printf(MSG_DEBUG, "WPS: AP PIN authentication failure number %u "
534 "(%u consecutive)",
535 hapd->ap_pin_failures, hapd->ap_pin_failures_consecutive);
536 if (hapd->ap_pin_failures < 3)
537 return 0;
538
539 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_SETUP_LOCKED);
540 hapd->wps->ap_setup_locked = 1;
541
542 wps_registrar_update_ie(hapd->wps->registrar);
543
544 if (!hapd->conf->ap_setup_locked &&
545 hapd->ap_pin_failures_consecutive >= 10) {
546 /*
547 * In indefinite lockdown - disable automatic AP PIN
548 * reenablement.
549 */
550 eloop_cancel_timeout(hostapd_wps_reenable_ap_pin, hapd, NULL);
551 wpa_printf(MSG_DEBUG, "WPS: AP PIN disabled indefinitely");
552 } else if (!hapd->conf->ap_setup_locked) {
553 if (hapd->ap_pin_lockout_time == 0)
554 hapd->ap_pin_lockout_time = 60;
555 else if (hapd->ap_pin_lockout_time < 365 * 24 * 60 * 60 &&
556 (hapd->ap_pin_failures % 3) == 0)
557 hapd->ap_pin_lockout_time *= 2;
558
559 wpa_printf(MSG_DEBUG, "WPS: Disable AP PIN for %u seconds",
560 hapd->ap_pin_lockout_time);
561 eloop_cancel_timeout(hostapd_wps_reenable_ap_pin, hapd, NULL);
562 eloop_register_timeout(hapd->ap_pin_lockout_time, 0,
563 hostapd_wps_reenable_ap_pin, hapd,
564 NULL);
565 }
566
567 return 0;
568 }
569
570
hostapd_pwd_auth_fail(struct hostapd_data * hapd,struct wps_event_pwd_auth_fail * data)571 static void hostapd_pwd_auth_fail(struct hostapd_data *hapd,
572 struct wps_event_pwd_auth_fail *data)
573 {
574 hostapd_wps_for_each(hapd, wps_pwd_auth_fail, data);
575 }
576
577
wps_ap_pin_success(struct hostapd_data * hapd,void * ctx)578 static int wps_ap_pin_success(struct hostapd_data *hapd, void *ctx)
579 {
580 if (hapd->conf->ap_pin == NULL || hapd->wps == NULL)
581 return 0;
582
583 if (hapd->ap_pin_failures_consecutive == 0)
584 return 0;
585
586 wpa_printf(MSG_DEBUG, "WPS: Clear consecutive AP PIN failure counter "
587 "- total validation failures %u (%u consecutive)",
588 hapd->ap_pin_failures, hapd->ap_pin_failures_consecutive);
589 hapd->ap_pin_failures_consecutive = 0;
590
591 return 0;
592 }
593
594
hostapd_wps_ap_pin_success(struct hostapd_data * hapd)595 static void hostapd_wps_ap_pin_success(struct hostapd_data *hapd)
596 {
597 hostapd_wps_for_each(hapd, wps_ap_pin_success, NULL);
598 }
599
600
601 static const char * wps_event_fail_reason[NUM_WPS_EI_VALUES] = {
602 "No Error", /* WPS_EI_NO_ERROR */
603 "TKIP Only Prohibited", /* WPS_EI_SECURITY_TKIP_ONLY_PROHIBITED */
604 "WEP Prohibited" /* WPS_EI_SECURITY_WEP_PROHIBITED */
605 };
606
hostapd_wps_event_fail(struct hostapd_data * hapd,struct wps_event_fail * fail)607 static void hostapd_wps_event_fail(struct hostapd_data *hapd,
608 struct wps_event_fail *fail)
609 {
610 if (fail->error_indication > 0 &&
611 fail->error_indication < NUM_WPS_EI_VALUES) {
612 wpa_msg(hapd->msg_ctx, MSG_INFO,
613 WPS_EVENT_FAIL "msg=%d config_error=%d reason=%d (%s)",
614 fail->msg, fail->config_error, fail->error_indication,
615 wps_event_fail_reason[fail->error_indication]);
616 } else {
617 wpa_msg(hapd->msg_ctx, MSG_INFO,
618 WPS_EVENT_FAIL "msg=%d config_error=%d",
619 fail->msg, fail->config_error);
620 }
621 }
622
623
hostapd_wps_event_cb(void * ctx,enum wps_event event,union wps_event_data * data)624 static void hostapd_wps_event_cb(void *ctx, enum wps_event event,
625 union wps_event_data *data)
626 {
627 struct hostapd_data *hapd = ctx;
628
629 switch (event) {
630 case WPS_EV_M2D:
631 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_M2D);
632 break;
633 case WPS_EV_FAIL:
634 hostapd_wps_event_fail(hapd, &data->fail);
635 break;
636 case WPS_EV_SUCCESS:
637 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_SUCCESS);
638 break;
639 case WPS_EV_PWD_AUTH_FAIL:
640 hostapd_pwd_auth_fail(hapd, &data->pwd_auth_fail);
641 break;
642 case WPS_EV_PBC_OVERLAP:
643 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_OVERLAP);
644 break;
645 case WPS_EV_PBC_TIMEOUT:
646 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_TIMEOUT);
647 break;
648 case WPS_EV_ER_AP_ADD:
649 break;
650 case WPS_EV_ER_AP_REMOVE:
651 break;
652 case WPS_EV_ER_ENROLLEE_ADD:
653 break;
654 case WPS_EV_ER_ENROLLEE_REMOVE:
655 break;
656 case WPS_EV_ER_AP_SETTINGS:
657 break;
658 case WPS_EV_ER_SET_SELECTED_REGISTRAR:
659 break;
660 case WPS_EV_AP_PIN_SUCCESS:
661 hostapd_wps_ap_pin_success(hapd);
662 break;
663 }
664 if (hapd->wps_event_cb)
665 hapd->wps_event_cb(hapd->wps_event_cb_ctx, event, data);
666 }
667
668
hostapd_wps_clear_ies(struct hostapd_data * hapd)669 static void hostapd_wps_clear_ies(struct hostapd_data *hapd)
670 {
671 wpabuf_free(hapd->wps_beacon_ie);
672 hapd->wps_beacon_ie = NULL;
673
674 wpabuf_free(hapd->wps_probe_resp_ie);
675 hapd->wps_probe_resp_ie = NULL;
676
677 hostapd_set_ap_wps_ie(hapd);
678 }
679
680
get_uuid_cb(struct hostapd_iface * iface,void * ctx)681 static int get_uuid_cb(struct hostapd_iface *iface, void *ctx)
682 {
683 const u8 **uuid = ctx;
684 size_t j;
685
686 if (iface == NULL)
687 return 0;
688 for (j = 0; j < iface->num_bss; j++) {
689 struct hostapd_data *hapd = iface->bss[j];
690 if (hapd->wps && !is_nil_uuid(hapd->wps->uuid)) {
691 *uuid = hapd->wps->uuid;
692 return 1;
693 }
694 }
695
696 return 0;
697 }
698
699
get_own_uuid(struct hostapd_iface * iface)700 static const u8 * get_own_uuid(struct hostapd_iface *iface)
701 {
702 const u8 *uuid;
703 if (iface->for_each_interface == NULL)
704 return NULL;
705 uuid = NULL;
706 iface->for_each_interface(iface->interfaces, get_uuid_cb, &uuid);
707 return uuid;
708 }
709
710
count_interface_cb(struct hostapd_iface * iface,void * ctx)711 static int count_interface_cb(struct hostapd_iface *iface, void *ctx)
712 {
713 int *count= ctx;
714 (*count)++;
715 return 0;
716 }
717
718
interface_count(struct hostapd_iface * iface)719 static int interface_count(struct hostapd_iface *iface)
720 {
721 int count = 0;
722 if (iface->for_each_interface == NULL)
723 return 0;
724 iface->for_each_interface(iface->interfaces, count_interface_cb,
725 &count);
726 return count;
727 }
728
729
hostapd_wps_set_vendor_ext(struct hostapd_data * hapd,struct wps_context * wps)730 static int hostapd_wps_set_vendor_ext(struct hostapd_data *hapd,
731 struct wps_context *wps)
732 {
733 int i;
734
735 for (i = 0; i < MAX_WPS_VENDOR_EXTENSIONS; i++) {
736 wpabuf_free(wps->dev.vendor_ext[i]);
737 wps->dev.vendor_ext[i] = NULL;
738
739 if (hapd->conf->wps_vendor_ext[i] == NULL)
740 continue;
741
742 wps->dev.vendor_ext[i] =
743 wpabuf_dup(hapd->conf->wps_vendor_ext[i]);
744 if (wps->dev.vendor_ext[i] == NULL) {
745 while (--i >= 0)
746 wpabuf_free(wps->dev.vendor_ext[i]);
747 return -1;
748 }
749 }
750
751 return 0;
752 }
753
754
hostapd_init_wps(struct hostapd_data * hapd,struct hostapd_bss_config * conf)755 int hostapd_init_wps(struct hostapd_data *hapd,
756 struct hostapd_bss_config *conf)
757 {
758 struct wps_context *wps;
759 struct wps_registrar_config cfg;
760
761 if (conf->wps_state == 0) {
762 hostapd_wps_clear_ies(hapd);
763 return 0;
764 }
765
766 wps = os_zalloc(sizeof(*wps));
767 if (wps == NULL)
768 return -1;
769
770 wps->cred_cb = hostapd_wps_cred_cb;
771 wps->event_cb = hostapd_wps_event_cb;
772 wps->cb_ctx = hapd;
773
774 os_memset(&cfg, 0, sizeof(cfg));
775 wps->wps_state = hapd->conf->wps_state;
776 wps->ap_setup_locked = hapd->conf->ap_setup_locked;
777 if (is_nil_uuid(hapd->conf->uuid)) {
778 const u8 *uuid;
779 uuid = get_own_uuid(hapd->iface);
780 if (uuid) {
781 os_memcpy(wps->uuid, uuid, UUID_LEN);
782 wpa_hexdump(MSG_DEBUG, "WPS: Clone UUID from another "
783 "interface", wps->uuid, UUID_LEN);
784 } else {
785 uuid_gen_mac_addr(hapd->own_addr, wps->uuid);
786 wpa_hexdump(MSG_DEBUG, "WPS: UUID based on MAC "
787 "address", wps->uuid, UUID_LEN);
788 }
789 } else {
790 os_memcpy(wps->uuid, hapd->conf->uuid, UUID_LEN);
791 wpa_hexdump(MSG_DEBUG, "WPS: Use configured UUID",
792 wps->uuid, UUID_LEN);
793 }
794 wps->ssid_len = hapd->conf->ssid.ssid_len;
795 os_memcpy(wps->ssid, hapd->conf->ssid.ssid, wps->ssid_len);
796 wps->ap = 1;
797 os_memcpy(wps->dev.mac_addr, hapd->own_addr, ETH_ALEN);
798 wps->dev.device_name = hapd->conf->device_name ?
799 os_strdup(hapd->conf->device_name) : NULL;
800 wps->dev.manufacturer = hapd->conf->manufacturer ?
801 os_strdup(hapd->conf->manufacturer) : NULL;
802 wps->dev.model_name = hapd->conf->model_name ?
803 os_strdup(hapd->conf->model_name) : NULL;
804 wps->dev.model_number = hapd->conf->model_number ?
805 os_strdup(hapd->conf->model_number) : NULL;
806 wps->dev.serial_number = hapd->conf->serial_number ?
807 os_strdup(hapd->conf->serial_number) : NULL;
808 wps->config_methods =
809 wps_config_methods_str2bin(hapd->conf->config_methods);
810 #ifdef CONFIG_WPS2
811 if ((wps->config_methods &
812 (WPS_CONFIG_DISPLAY | WPS_CONFIG_VIRT_DISPLAY |
813 WPS_CONFIG_PHY_DISPLAY)) == WPS_CONFIG_DISPLAY) {
814 wpa_printf(MSG_INFO, "WPS: Converting display to "
815 "virtual_display for WPS 2.0 compliance");
816 wps->config_methods |= WPS_CONFIG_VIRT_DISPLAY;
817 }
818 if ((wps->config_methods &
819 (WPS_CONFIG_PUSHBUTTON | WPS_CONFIG_VIRT_PUSHBUTTON |
820 WPS_CONFIG_PHY_PUSHBUTTON)) == WPS_CONFIG_PUSHBUTTON) {
821 wpa_printf(MSG_INFO, "WPS: Converting push_button to "
822 "virtual_push_button for WPS 2.0 compliance");
823 wps->config_methods |= WPS_CONFIG_VIRT_PUSHBUTTON;
824 }
825 #endif /* CONFIG_WPS2 */
826 os_memcpy(wps->dev.pri_dev_type, hapd->conf->device_type,
827 WPS_DEV_TYPE_LEN);
828
829 if (hostapd_wps_set_vendor_ext(hapd, wps) < 0) {
830 os_free(wps);
831 return -1;
832 }
833
834 wps->dev.os_version = WPA_GET_BE32(hapd->conf->os_version);
835
836 if (conf->wps_rf_bands) {
837 wps->dev.rf_bands = conf->wps_rf_bands;
838 } else {
839 wps->dev.rf_bands =
840 hapd->iconf->hw_mode == HOSTAPD_MODE_IEEE80211A ?
841 WPS_RF_50GHZ : WPS_RF_24GHZ; /* FIX: dualband AP */
842 }
843
844 if (conf->wpa & WPA_PROTO_RSN) {
845 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_PSK)
846 wps->auth_types |= WPS_AUTH_WPA2PSK;
847 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X)
848 wps->auth_types |= WPS_AUTH_WPA2;
849
850 if (conf->rsn_pairwise & WPA_CIPHER_CCMP)
851 wps->encr_types |= WPS_ENCR_AES;
852 if (conf->rsn_pairwise & WPA_CIPHER_TKIP)
853 wps->encr_types |= WPS_ENCR_TKIP;
854 }
855
856 if (conf->wpa & WPA_PROTO_WPA) {
857 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_PSK)
858 wps->auth_types |= WPS_AUTH_WPAPSK;
859 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X)
860 wps->auth_types |= WPS_AUTH_WPA;
861
862 if (conf->wpa_pairwise & WPA_CIPHER_CCMP)
863 wps->encr_types |= WPS_ENCR_AES;
864 if (conf->wpa_pairwise & WPA_CIPHER_TKIP)
865 wps->encr_types |= WPS_ENCR_TKIP;
866 }
867
868 if (conf->ssid.security_policy == SECURITY_PLAINTEXT) {
869 wps->encr_types |= WPS_ENCR_NONE;
870 wps->auth_types |= WPS_AUTH_OPEN;
871 } else if (conf->ssid.security_policy == SECURITY_STATIC_WEP) {
872 wps->encr_types |= WPS_ENCR_WEP;
873 if (conf->auth_algs & WPA_AUTH_ALG_OPEN)
874 wps->auth_types |= WPS_AUTH_OPEN;
875 if (conf->auth_algs & WPA_AUTH_ALG_SHARED)
876 wps->auth_types |= WPS_AUTH_SHARED;
877 } else if (conf->ssid.security_policy == SECURITY_IEEE_802_1X) {
878 wps->auth_types |= WPS_AUTH_OPEN;
879 if (conf->default_wep_key_len)
880 wps->encr_types |= WPS_ENCR_WEP;
881 else
882 wps->encr_types |= WPS_ENCR_NONE;
883 }
884
885 if (conf->ssid.wpa_psk_file) {
886 /* Use per-device PSKs */
887 } else if (conf->ssid.wpa_passphrase) {
888 wps->network_key = (u8 *) os_strdup(conf->ssid.wpa_passphrase);
889 wps->network_key_len = os_strlen(conf->ssid.wpa_passphrase);
890 } else if (conf->ssid.wpa_psk) {
891 wps->network_key = os_malloc(2 * PMK_LEN + 1);
892 if (wps->network_key == NULL) {
893 os_free(wps);
894 return -1;
895 }
896 wpa_snprintf_hex((char *) wps->network_key, 2 * PMK_LEN + 1,
897 conf->ssid.wpa_psk->psk, PMK_LEN);
898 wps->network_key_len = 2 * PMK_LEN;
899 } else if (conf->ssid.wep.keys_set && conf->ssid.wep.key[0]) {
900 wps->network_key = os_malloc(conf->ssid.wep.len[0]);
901 if (wps->network_key == NULL) {
902 os_free(wps);
903 return -1;
904 }
905 os_memcpy(wps->network_key, conf->ssid.wep.key[0],
906 conf->ssid.wep.len[0]);
907 wps->network_key_len = conf->ssid.wep.len[0];
908 }
909
910 if (conf->ssid.wpa_psk) {
911 os_memcpy(wps->psk, conf->ssid.wpa_psk->psk, PMK_LEN);
912 wps->psk_set = 1;
913 }
914
915 if (conf->wps_state == WPS_STATE_NOT_CONFIGURED) {
916 /* Override parameters to enable security by default */
917 wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK;
918 wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP;
919 }
920
921 wps->ap_settings = conf->ap_settings;
922 wps->ap_settings_len = conf->ap_settings_len;
923
924 cfg.new_psk_cb = hostapd_wps_new_psk_cb;
925 cfg.set_ie_cb = hostapd_wps_set_ie_cb;
926 cfg.pin_needed_cb = hostapd_wps_pin_needed_cb;
927 cfg.reg_success_cb = hostapd_wps_reg_success_cb;
928 cfg.enrollee_seen_cb = hostapd_wps_enrollee_seen_cb;
929 cfg.cb_ctx = hapd;
930 cfg.skip_cred_build = conf->skip_cred_build;
931 cfg.extra_cred = conf->extra_cred;
932 cfg.extra_cred_len = conf->extra_cred_len;
933 cfg.disable_auto_conf = (hapd->conf->wps_cred_processing == 1) &&
934 conf->skip_cred_build;
935 if (conf->ssid.security_policy == SECURITY_STATIC_WEP)
936 cfg.static_wep_only = 1;
937 cfg.dualband = interface_count(hapd->iface) > 1;
938 if (cfg.dualband)
939 wpa_printf(MSG_DEBUG, "WPS: Dualband AP");
940
941 wps->registrar = wps_registrar_init(wps, &cfg);
942 if (wps->registrar == NULL) {
943 wpa_printf(MSG_ERROR, "Failed to initialize WPS Registrar");
944 os_free(wps->network_key);
945 os_free(wps);
946 return -1;
947 }
948
949 #ifdef CONFIG_WPS_UPNP
950 wps->friendly_name = hapd->conf->friendly_name;
951 wps->manufacturer_url = hapd->conf->manufacturer_url;
952 wps->model_description = hapd->conf->model_description;
953 wps->model_url = hapd->conf->model_url;
954 wps->upc = hapd->conf->upc;
955 #endif /* CONFIG_WPS_UPNP */
956
957 hostapd_register_probereq_cb(hapd, hostapd_wps_probe_req_rx, hapd);
958
959 hapd->wps = wps;
960
961 return 0;
962 }
963
964
hostapd_init_wps_complete(struct hostapd_data * hapd)965 int hostapd_init_wps_complete(struct hostapd_data *hapd)
966 {
967 struct wps_context *wps = hapd->wps;
968
969 if (wps == NULL)
970 return 0;
971
972 #ifdef CONFIG_WPS_UPNP
973 if (hostapd_wps_upnp_init(hapd, wps) < 0) {
974 wpa_printf(MSG_ERROR, "Failed to initialize WPS UPnP");
975 wps_registrar_deinit(wps->registrar);
976 os_free(wps->network_key);
977 os_free(wps);
978 hapd->wps = NULL;
979 return -1;
980 }
981 #endif /* CONFIG_WPS_UPNP */
982
983 return 0;
984 }
985
986
hostapd_deinit_wps(struct hostapd_data * hapd)987 void hostapd_deinit_wps(struct hostapd_data *hapd)
988 {
989 eloop_cancel_timeout(hostapd_wps_reenable_ap_pin, hapd, NULL);
990 eloop_cancel_timeout(hostapd_wps_ap_pin_timeout, hapd, NULL);
991 if (hapd->wps == NULL)
992 return;
993 #ifdef CONFIG_WPS_UPNP
994 hostapd_wps_upnp_deinit(hapd);
995 #endif /* CONFIG_WPS_UPNP */
996 wps_registrar_deinit(hapd->wps->registrar);
997 os_free(hapd->wps->network_key);
998 wps_device_data_free(&hapd->wps->dev);
999 wpabuf_free(hapd->wps->dh_pubkey);
1000 wpabuf_free(hapd->wps->dh_privkey);
1001 wpabuf_free(hapd->wps->oob_conf.pubkey_hash);
1002 wpabuf_free(hapd->wps->oob_conf.dev_password);
1003 wps_free_pending_msgs(hapd->wps->upnp_msgs);
1004 os_free(hapd->wps);
1005 hapd->wps = NULL;
1006 hostapd_wps_clear_ies(hapd);
1007 }
1008
1009
hostapd_update_wps(struct hostapd_data * hapd)1010 void hostapd_update_wps(struct hostapd_data *hapd)
1011 {
1012 if (hapd->wps == NULL)
1013 return;
1014
1015 #ifdef CONFIG_WPS_UPNP
1016 hapd->wps->friendly_name = hapd->conf->friendly_name;
1017 hapd->wps->manufacturer_url = hapd->conf->manufacturer_url;
1018 hapd->wps->model_description = hapd->conf->model_description;
1019 hapd->wps->model_url = hapd->conf->model_url;
1020 hapd->wps->upc = hapd->conf->upc;
1021 #endif /* CONFIG_WPS_UPNP */
1022
1023 hostapd_wps_set_vendor_ext(hapd, hapd->wps);
1024
1025 if (hapd->conf->wps_state)
1026 wps_registrar_update_ie(hapd->wps->registrar);
1027 else
1028 hostapd_deinit_wps(hapd);
1029 }
1030
1031
1032 struct wps_add_pin_data {
1033 const u8 *addr;
1034 const u8 *uuid;
1035 const u8 *pin;
1036 size_t pin_len;
1037 int timeout;
1038 int added;
1039 };
1040
1041
wps_add_pin(struct hostapd_data * hapd,void * ctx)1042 static int wps_add_pin(struct hostapd_data *hapd, void *ctx)
1043 {
1044 struct wps_add_pin_data *data = ctx;
1045 int ret;
1046
1047 if (hapd->wps == NULL)
1048 return 0;
1049 ret = wps_registrar_add_pin(hapd->wps->registrar, data->addr,
1050 data->uuid, data->pin, data->pin_len,
1051 data->timeout);
1052 if (ret == 0)
1053 data->added++;
1054 return ret;
1055 }
1056
1057
hostapd_wps_add_pin(struct hostapd_data * hapd,const u8 * addr,const char * uuid,const char * pin,int timeout)1058 int hostapd_wps_add_pin(struct hostapd_data *hapd, const u8 *addr,
1059 const char *uuid, const char *pin, int timeout)
1060 {
1061 u8 u[UUID_LEN];
1062 struct wps_add_pin_data data;
1063
1064 data.addr = addr;
1065 data.uuid = u;
1066 data.pin = (const u8 *) pin;
1067 data.pin_len = os_strlen(pin);
1068 data.timeout = timeout;
1069 data.added = 0;
1070
1071 if (os_strcmp(uuid, "any") == 0)
1072 data.uuid = NULL;
1073 else {
1074 if (uuid_str2bin(uuid, u))
1075 return -1;
1076 data.uuid = u;
1077 }
1078 if (hostapd_wps_for_each(hapd, wps_add_pin, &data) < 0)
1079 return -1;
1080 return data.added ? 0 : -1;
1081 }
1082
1083
wps_button_pushed(struct hostapd_data * hapd,void * ctx)1084 static int wps_button_pushed(struct hostapd_data *hapd, void *ctx)
1085 {
1086 const u8 *p2p_dev_addr = ctx;
1087 if (hapd->wps == NULL)
1088 return 0;
1089 return wps_registrar_button_pushed(hapd->wps->registrar, p2p_dev_addr);
1090 }
1091
1092
hostapd_wps_button_pushed(struct hostapd_data * hapd,const u8 * p2p_dev_addr)1093 int hostapd_wps_button_pushed(struct hostapd_data *hapd,
1094 const u8 *p2p_dev_addr)
1095 {
1096 return hostapd_wps_for_each(hapd, wps_button_pushed,
1097 (void *) p2p_dev_addr);
1098 }
1099
1100
1101 #ifdef CONFIG_WPS_OOB
hostapd_wps_start_oob(struct hostapd_data * hapd,char * device_type,char * path,char * method,char * name)1102 int hostapd_wps_start_oob(struct hostapd_data *hapd, char *device_type,
1103 char *path, char *method, char *name)
1104 {
1105 struct wps_context *wps = hapd->wps;
1106 struct oob_device_data *oob_dev;
1107
1108 oob_dev = wps_get_oob_device(device_type);
1109 if (oob_dev == NULL)
1110 return -1;
1111 oob_dev->device_path = path;
1112 oob_dev->device_name = name;
1113 wps->oob_conf.oob_method = wps_get_oob_method(method);
1114
1115 if (wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_R) {
1116 /*
1117 * Use pre-configured DH keys in order to be able to write the
1118 * key hash into the OOB file.
1119 */
1120 wpabuf_free(wps->dh_pubkey);
1121 wpabuf_free(wps->dh_privkey);
1122 wps->dh_privkey = NULL;
1123 wps->dh_pubkey = dh_init(dh_groups_get(WPS_DH_GROUP),
1124 &wps->dh_privkey);
1125 wps->dh_pubkey = wpabuf_zeropad(wps->dh_pubkey, 192);
1126 if (wps->dh_pubkey == NULL) {
1127 wpa_printf(MSG_ERROR, "WPS: Failed to initialize "
1128 "Diffie-Hellman handshake");
1129 return -1;
1130 }
1131 }
1132
1133 if (wps_process_oob(wps, oob_dev, 1) < 0)
1134 goto error;
1135
1136 if ((wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_E ||
1137 wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_R) &&
1138 hostapd_wps_add_pin(hapd, NULL, "any",
1139 wpabuf_head(wps->oob_conf.dev_password), 0) <
1140 0)
1141 goto error;
1142
1143 return 0;
1144
1145 error:
1146 wpabuf_free(wps->dh_pubkey);
1147 wps->dh_pubkey = NULL;
1148 wpabuf_free(wps->dh_privkey);
1149 wps->dh_privkey = NULL;
1150 return -1;
1151 }
1152 #endif /* CONFIG_WPS_OOB */
1153
1154
hostapd_wps_probe_req_rx(void * ctx,const u8 * addr,const u8 * da,const u8 * bssid,const u8 * ie,size_t ie_len)1155 static int hostapd_wps_probe_req_rx(void *ctx, const u8 *addr, const u8 *da,
1156 const u8 *bssid,
1157 const u8 *ie, size_t ie_len)
1158 {
1159 struct hostapd_data *hapd = ctx;
1160 struct wpabuf *wps_ie;
1161 struct ieee802_11_elems elems;
1162
1163 if (hapd->wps == NULL)
1164 return 0;
1165
1166 if (ieee802_11_parse_elems(ie, ie_len, &elems, 0) == ParseFailed) {
1167 wpa_printf(MSG_DEBUG, "WPS: Could not parse ProbeReq from "
1168 MACSTR, MAC2STR(addr));
1169 return 0;
1170 }
1171
1172 if (elems.ssid && elems.ssid_len > 0 &&
1173 (elems.ssid_len != hapd->conf->ssid.ssid_len ||
1174 os_memcmp(elems.ssid, hapd->conf->ssid.ssid, elems.ssid_len) !=
1175 0))
1176 return 0; /* Not for us */
1177
1178 wps_ie = ieee802_11_vendor_ie_concat(ie, ie_len, WPS_DEV_OUI_WFA);
1179 if (wps_ie == NULL)
1180 return 0;
1181 if (wps_validate_probe_req(wps_ie, addr) < 0) {
1182 wpabuf_free(wps_ie);
1183 return 0;
1184 }
1185
1186 if (wpabuf_len(wps_ie) > 0) {
1187 int p2p_wildcard = 0;
1188 #ifdef CONFIG_P2P
1189 if (elems.ssid && elems.ssid_len == P2P_WILDCARD_SSID_LEN &&
1190 os_memcmp(elems.ssid, P2P_WILDCARD_SSID,
1191 P2P_WILDCARD_SSID_LEN) == 0)
1192 p2p_wildcard = 1;
1193 #endif /* CONFIG_P2P */
1194 wps_registrar_probe_req_rx(hapd->wps->registrar, addr, wps_ie,
1195 p2p_wildcard);
1196 #ifdef CONFIG_WPS_UPNP
1197 /* FIX: what exactly should be included in the WLANEvent?
1198 * WPS attributes? Full ProbeReq frame? */
1199 if (!p2p_wildcard)
1200 upnp_wps_device_send_wlan_event(
1201 hapd->wps_upnp, addr,
1202 UPNP_WPS_WLANEVENT_TYPE_PROBE, wps_ie);
1203 #endif /* CONFIG_WPS_UPNP */
1204 }
1205
1206 wpabuf_free(wps_ie);
1207
1208 return 0;
1209 }
1210
1211
1212 #ifdef CONFIG_WPS_UPNP
1213
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)1214 static int hostapd_rx_req_put_wlan_response(
1215 void *priv, enum upnp_wps_wlanevent_type ev_type,
1216 const u8 *mac_addr, const struct wpabuf *msg,
1217 enum wps_msg_type msg_type)
1218 {
1219 struct hostapd_data *hapd = priv;
1220 struct sta_info *sta;
1221 struct upnp_pending_message *p;
1222
1223 wpa_printf(MSG_DEBUG, "WPS UPnP: PutWLANResponse ev_type=%d mac_addr="
1224 MACSTR, ev_type, MAC2STR(mac_addr));
1225 wpa_hexdump(MSG_MSGDUMP, "WPS UPnP: PutWLANResponse NewMessage",
1226 wpabuf_head(msg), wpabuf_len(msg));
1227 if (ev_type != UPNP_WPS_WLANEVENT_TYPE_EAP) {
1228 wpa_printf(MSG_DEBUG, "WPS UPnP: Ignored unexpected "
1229 "PutWLANResponse WLANEventType %d", ev_type);
1230 return -1;
1231 }
1232
1233 /*
1234 * EAP response to ongoing to WPS Registration. Send it to EAP-WSC
1235 * server implementation for delivery to the peer.
1236 */
1237
1238 sta = ap_get_sta(hapd, mac_addr);
1239 #ifndef CONFIG_WPS_STRICT
1240 if (!sta) {
1241 /*
1242 * Workaround - Intel wsccmd uses bogus NewWLANEventMAC:
1243 * Pick STA that is in an ongoing WPS registration without
1244 * checking the MAC address.
1245 */
1246 wpa_printf(MSG_DEBUG, "WPS UPnP: No matching STA found based "
1247 "on NewWLANEventMAC; try wildcard match");
1248 for (sta = hapd->sta_list; sta; sta = sta->next) {
1249 if (sta->eapol_sm && (sta->flags & WLAN_STA_WPS))
1250 break;
1251 }
1252 }
1253 #endif /* CONFIG_WPS_STRICT */
1254
1255 if (!sta || !(sta->flags & WLAN_STA_WPS)) {
1256 wpa_printf(MSG_DEBUG, "WPS UPnP: No matching STA found");
1257 return 0;
1258 }
1259
1260 p = os_zalloc(sizeof(*p));
1261 if (p == NULL)
1262 return -1;
1263 os_memcpy(p->addr, sta->addr, ETH_ALEN);
1264 p->msg = wpabuf_dup(msg);
1265 p->type = msg_type;
1266 p->next = hapd->wps->upnp_msgs;
1267 hapd->wps->upnp_msgs = p;
1268
1269 return eapol_auth_eap_pending_cb(sta->eapol_sm, sta->eapol_sm->eap);
1270 }
1271
1272
hostapd_wps_upnp_init(struct hostapd_data * hapd,struct wps_context * wps)1273 static int hostapd_wps_upnp_init(struct hostapd_data *hapd,
1274 struct wps_context *wps)
1275 {
1276 struct upnp_wps_device_ctx *ctx;
1277
1278 if (!hapd->conf->upnp_iface)
1279 return 0;
1280 ctx = os_zalloc(sizeof(*ctx));
1281 if (ctx == NULL)
1282 return -1;
1283
1284 ctx->rx_req_put_wlan_response = hostapd_rx_req_put_wlan_response;
1285 if (hapd->conf->ap_pin)
1286 ctx->ap_pin = os_strdup(hapd->conf->ap_pin);
1287
1288 hapd->wps_upnp = upnp_wps_device_init(ctx, wps, hapd,
1289 hapd->conf->upnp_iface);
1290 if (hapd->wps_upnp == NULL)
1291 return -1;
1292 wps->wps_upnp = hapd->wps_upnp;
1293
1294 return 0;
1295 }
1296
1297
hostapd_wps_upnp_deinit(struct hostapd_data * hapd)1298 static void hostapd_wps_upnp_deinit(struct hostapd_data *hapd)
1299 {
1300 upnp_wps_device_deinit(hapd->wps_upnp, hapd);
1301 }
1302
1303 #endif /* CONFIG_WPS_UPNP */
1304
1305
hostapd_wps_get_mib_sta(struct hostapd_data * hapd,const u8 * addr,char * buf,size_t buflen)1306 int hostapd_wps_get_mib_sta(struct hostapd_data *hapd, const u8 *addr,
1307 char *buf, size_t buflen)
1308 {
1309 if (hapd->wps == NULL)
1310 return 0;
1311 return wps_registrar_get_info(hapd->wps->registrar, addr, buf, buflen);
1312 }
1313
1314
hostapd_wps_ap_pin_timeout(void * eloop_data,void * user_ctx)1315 static void hostapd_wps_ap_pin_timeout(void *eloop_data, void *user_ctx)
1316 {
1317 struct hostapd_data *hapd = eloop_data;
1318 wpa_printf(MSG_DEBUG, "WPS: AP PIN timed out");
1319 hostapd_wps_ap_pin_disable(hapd);
1320 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_PIN_DISABLED);
1321 }
1322
1323
hostapd_wps_ap_pin_enable(struct hostapd_data * hapd,int timeout)1324 static void hostapd_wps_ap_pin_enable(struct hostapd_data *hapd, int timeout)
1325 {
1326 wpa_printf(MSG_DEBUG, "WPS: Enabling AP PIN (timeout=%d)", timeout);
1327 hapd->ap_pin_failures = 0;
1328 hapd->ap_pin_failures_consecutive = 0;
1329 hapd->conf->ap_setup_locked = 0;
1330 if (hapd->wps->ap_setup_locked) {
1331 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_SETUP_UNLOCKED);
1332 hapd->wps->ap_setup_locked = 0;
1333 wps_registrar_update_ie(hapd->wps->registrar);
1334 }
1335 eloop_cancel_timeout(hostapd_wps_ap_pin_timeout, hapd, NULL);
1336 if (timeout > 0)
1337 eloop_register_timeout(timeout, 0,
1338 hostapd_wps_ap_pin_timeout, hapd, NULL);
1339 }
1340
1341
wps_ap_pin_disable(struct hostapd_data * hapd,void * ctx)1342 static int wps_ap_pin_disable(struct hostapd_data *hapd, void *ctx)
1343 {
1344 os_free(hapd->conf->ap_pin);
1345 hapd->conf->ap_pin = NULL;
1346 #ifdef CONFIG_WPS_UPNP
1347 upnp_wps_set_ap_pin(hapd->wps_upnp, NULL);
1348 #endif /* CONFIG_WPS_UPNP */
1349 eloop_cancel_timeout(hostapd_wps_ap_pin_timeout, hapd, NULL);
1350 return 0;
1351 }
1352
1353
hostapd_wps_ap_pin_disable(struct hostapd_data * hapd)1354 void hostapd_wps_ap_pin_disable(struct hostapd_data *hapd)
1355 {
1356 wpa_printf(MSG_DEBUG, "WPS: Disabling AP PIN");
1357 hostapd_wps_for_each(hapd, wps_ap_pin_disable, NULL);
1358 }
1359
1360
1361 struct wps_ap_pin_data {
1362 char pin_txt[9];
1363 int timeout;
1364 };
1365
1366
wps_ap_pin_set(struct hostapd_data * hapd,void * ctx)1367 static int wps_ap_pin_set(struct hostapd_data *hapd, void *ctx)
1368 {
1369 struct wps_ap_pin_data *data = ctx;
1370 os_free(hapd->conf->ap_pin);
1371 hapd->conf->ap_pin = os_strdup(data->pin_txt);
1372 #ifdef CONFIG_WPS_UPNP
1373 upnp_wps_set_ap_pin(hapd->wps_upnp, data->pin_txt);
1374 #endif /* CONFIG_WPS_UPNP */
1375 hostapd_wps_ap_pin_enable(hapd, data->timeout);
1376 return 0;
1377 }
1378
1379
hostapd_wps_ap_pin_random(struct hostapd_data * hapd,int timeout)1380 const char * hostapd_wps_ap_pin_random(struct hostapd_data *hapd, int timeout)
1381 {
1382 unsigned int pin;
1383 struct wps_ap_pin_data data;
1384
1385 pin = wps_generate_pin();
1386 os_snprintf(data.pin_txt, sizeof(data.pin_txt), "%08u", pin);
1387 data.timeout = timeout;
1388 hostapd_wps_for_each(hapd, wps_ap_pin_set, &data);
1389 return hapd->conf->ap_pin;
1390 }
1391
1392
hostapd_wps_ap_pin_get(struct hostapd_data * hapd)1393 const char * hostapd_wps_ap_pin_get(struct hostapd_data *hapd)
1394 {
1395 return hapd->conf->ap_pin;
1396 }
1397
1398
hostapd_wps_ap_pin_set(struct hostapd_data * hapd,const char * pin,int timeout)1399 int hostapd_wps_ap_pin_set(struct hostapd_data *hapd, const char *pin,
1400 int timeout)
1401 {
1402 struct wps_ap_pin_data data;
1403 int ret;
1404
1405 ret = os_snprintf(data.pin_txt, sizeof(data.pin_txt), "%s", pin);
1406 if (ret < 0 || ret >= (int) sizeof(data.pin_txt))
1407 return -1;
1408 data.timeout = timeout;
1409 return hostapd_wps_for_each(hapd, wps_ap_pin_set, &data);
1410 }
1411
1412
wps_update_ie(struct hostapd_data * hapd,void * ctx)1413 static int wps_update_ie(struct hostapd_data *hapd, void *ctx)
1414 {
1415 if (hapd->wps)
1416 wps_registrar_update_ie(hapd->wps->registrar);
1417 return 0;
1418 }
1419
1420
hostapd_wps_update_ie(struct hostapd_data * hapd)1421 void hostapd_wps_update_ie(struct hostapd_data *hapd)
1422 {
1423 hostapd_wps_for_each(hapd, wps_update_ie, NULL);
1424 }
1425
1426
hostapd_wps_config_ap(struct hostapd_data * hapd,const char * ssid,const char * auth,const char * encr,const char * key)1427 int hostapd_wps_config_ap(struct hostapd_data *hapd, const char *ssid,
1428 const char *auth, const char *encr, const char *key)
1429 {
1430 struct wps_credential cred;
1431 size_t len;
1432
1433 os_memset(&cred, 0, sizeof(cred));
1434
1435 len = os_strlen(ssid);
1436 if ((len & 1) || len > 2 * sizeof(cred.ssid) ||
1437 hexstr2bin(ssid, cred.ssid, len / 2))
1438 return -1;
1439 cred.ssid_len = len / 2;
1440
1441 if (os_strncmp(auth, "OPEN", 4) == 0)
1442 cred.auth_type = WPS_AUTH_OPEN;
1443 else if (os_strncmp(auth, "WPAPSK", 6) == 0)
1444 cred.auth_type = WPS_AUTH_WPAPSK;
1445 else if (os_strncmp(auth, "WPA2PSK", 7) == 0)
1446 cred.auth_type = WPS_AUTH_WPA2PSK;
1447 else
1448 return -1;
1449
1450 if (encr) {
1451 if (os_strncmp(encr, "NONE", 4) == 0)
1452 cred.encr_type = WPS_ENCR_NONE;
1453 else if (os_strncmp(encr, "WEP", 3) == 0)
1454 cred.encr_type = WPS_ENCR_WEP;
1455 else if (os_strncmp(encr, "TKIP", 4) == 0)
1456 cred.encr_type = WPS_ENCR_TKIP;
1457 else if (os_strncmp(encr, "CCMP", 4) == 0)
1458 cred.encr_type = WPS_ENCR_AES;
1459 else
1460 return -1;
1461 } else
1462 cred.encr_type = WPS_ENCR_NONE;
1463
1464 if (key) {
1465 len = os_strlen(key);
1466 if ((len & 1) || len > 2 * sizeof(cred.key) ||
1467 hexstr2bin(key, cred.key, len / 2))
1468 return -1;
1469 cred.key_len = len / 2;
1470 }
1471
1472 return wps_registrar_config_ap(hapd->wps->registrar, &cred);
1473 }
1474