1 /*
2 * Wi-Fi Protected Setup - External Registrar
3 * Copyright (c) 2009-2013, Jouni Malinen <j@w1.fi>
4 *
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
7 */
8
9 #include "includes.h"
10
11 #include "common.h"
12 #include "base64.h"
13 #include "uuid.h"
14 #include "eloop.h"
15 #include "httpread.h"
16 #include "http_client.h"
17 #include "http_server.h"
18 #include "upnp_xml.h"
19 #include "wps_i.h"
20 #include "wps_upnp.h"
21 #include "wps_upnp_i.h"
22 #include "wps_er.h"
23
24
25 static void wps_er_deinit_finish(void *eloop_data, void *user_ctx);
26 static void wps_er_ap_timeout(void *eloop_data, void *user_ctx);
27 static void wps_er_sta_timeout(void *eloop_data, void *user_ctx);
28 static void wps_er_ap_process(struct wps_er_ap *ap, struct wpabuf *msg);
29 static int wps_er_send_get_device_info(struct wps_er_ap *ap,
30 void (*m1_handler)(struct wps_er_ap *ap,
31 struct wpabuf *m1));
32
33
wps_er_sta_event(struct wps_context * wps,struct wps_er_sta * sta,enum wps_event event)34 static void wps_er_sta_event(struct wps_context *wps, struct wps_er_sta *sta,
35 enum wps_event event)
36 {
37 union wps_event_data data;
38 struct wps_event_er_enrollee *ev = &data.enrollee;
39
40 if (wps->event_cb == NULL)
41 return;
42
43 os_memset(&data, 0, sizeof(data));
44 ev->uuid = sta->uuid;
45 ev->mac_addr = sta->addr;
46 ev->m1_received = sta->m1_received;
47 ev->config_methods = sta->config_methods;
48 ev->dev_passwd_id = sta->dev_passwd_id;
49 ev->pri_dev_type = sta->pri_dev_type;
50 ev->dev_name = sta->dev_name;
51 ev->manufacturer = sta->manufacturer;
52 ev->model_name = sta->model_name;
53 ev->model_number = sta->model_number;
54 ev->serial_number = sta->serial_number;
55 wps->event_cb(wps->cb_ctx, event, &data);
56 }
57
58
wps_er_sta_get(struct wps_er_ap * ap,const u8 * addr,const u8 * uuid)59 static struct wps_er_sta * wps_er_sta_get(struct wps_er_ap *ap, const u8 *addr,
60 const u8 *uuid)
61 {
62 struct wps_er_sta *sta;
63 dl_list_for_each(sta, &ap->sta, struct wps_er_sta, list) {
64 if ((addr == NULL ||
65 os_memcmp(sta->addr, addr, ETH_ALEN) == 0) &&
66 (uuid == NULL ||
67 os_memcmp(uuid, sta->uuid, WPS_UUID_LEN) == 0))
68 return sta;
69 }
70 return NULL;
71 }
72
73
wps_er_sta_free(struct wps_er_sta * sta)74 static void wps_er_sta_free(struct wps_er_sta *sta)
75 {
76 wps_er_sta_event(sta->ap->er->wps, sta, WPS_EV_ER_ENROLLEE_REMOVE);
77 if (sta->wps)
78 wps_deinit(sta->wps);
79 os_free(sta->manufacturer);
80 os_free(sta->model_name);
81 os_free(sta->model_number);
82 os_free(sta->serial_number);
83 os_free(sta->dev_name);
84 http_client_free(sta->http);
85 eloop_cancel_timeout(wps_er_sta_timeout, sta, NULL);
86 os_free(sta->cred);
87 os_free(sta);
88 }
89
90
wps_er_sta_remove_all(struct wps_er_ap * ap)91 static void wps_er_sta_remove_all(struct wps_er_ap *ap)
92 {
93 struct wps_er_sta *prev, *sta;
94 dl_list_for_each_safe(sta, prev, &ap->sta, struct wps_er_sta, list)
95 wps_er_sta_free(sta);
96 }
97
98
wps_er_ap_get(struct wps_er * er,struct in_addr * addr,const u8 * uuid,const u8 * mac_addr)99 static struct wps_er_ap * wps_er_ap_get(struct wps_er *er,
100 struct in_addr *addr, const u8 *uuid,
101 const u8 *mac_addr)
102 {
103 struct wps_er_ap *ap;
104 dl_list_for_each(ap, &er->ap, struct wps_er_ap, list) {
105 if ((addr == NULL || ap->addr.s_addr == addr->s_addr) &&
106 (uuid == NULL ||
107 os_memcmp(uuid, ap->uuid, WPS_UUID_LEN) == 0) &&
108 (mac_addr == NULL ||
109 os_memcmp(mac_addr, ap->mac_addr, ETH_ALEN) == 0))
110 return ap;
111 }
112 return NULL;
113 }
114
115
wps_er_ap_get_id(struct wps_er * er,unsigned int id)116 static struct wps_er_ap * wps_er_ap_get_id(struct wps_er *er, unsigned int id)
117 {
118 struct wps_er_ap *ap;
119 dl_list_for_each(ap, &er->ap, struct wps_er_ap, list) {
120 if (ap->id == id)
121 return ap;
122 }
123 return NULL;
124 }
125
126
wps_er_ap_event(struct wps_context * wps,struct wps_er_ap * ap,enum wps_event event)127 static void wps_er_ap_event(struct wps_context *wps, struct wps_er_ap *ap,
128 enum wps_event event)
129 {
130 union wps_event_data data;
131 struct wps_event_er_ap *evap = &data.ap;
132
133 if (wps->event_cb == NULL)
134 return;
135
136 os_memset(&data, 0, sizeof(data));
137 evap->uuid = ap->uuid;
138 evap->friendly_name = ap->friendly_name;
139 evap->manufacturer = ap->manufacturer;
140 evap->manufacturer_url = ap->manufacturer_url;
141 evap->model_description = ap->model_description;
142 evap->model_name = ap->model_name;
143 evap->model_number = ap->model_number;
144 evap->model_url = ap->model_url;
145 evap->serial_number = ap->serial_number;
146 evap->upc = ap->upc;
147 evap->pri_dev_type = ap->pri_dev_type;
148 evap->wps_state = ap->wps_state;
149 evap->mac_addr = ap->mac_addr;
150 wps->event_cb(wps->cb_ctx, event, &data);
151 }
152
153
wps_er_ap_free(struct wps_er_ap * ap)154 static void wps_er_ap_free(struct wps_er_ap *ap)
155 {
156 http_client_free(ap->http);
157 ap->http = NULL;
158
159 os_free(ap->location);
160 os_free(ap->friendly_name);
161 os_free(ap->manufacturer);
162 os_free(ap->manufacturer_url);
163 os_free(ap->model_description);
164 os_free(ap->model_name);
165 os_free(ap->model_number);
166 os_free(ap->model_url);
167 os_free(ap->serial_number);
168 os_free(ap->udn);
169 os_free(ap->upc);
170
171 os_free(ap->scpd_url);
172 os_free(ap->control_url);
173 os_free(ap->event_sub_url);
174
175 os_free(ap->ap_settings);
176
177 os_free(ap);
178 }
179
180
wps_er_ap_unsubscribed(struct wps_er * er,struct wps_er_ap * ap)181 static void wps_er_ap_unsubscribed(struct wps_er *er, struct wps_er_ap *ap)
182 {
183 wpa_printf(MSG_DEBUG, "WPS ER: Unsubscribed from AP %s (%s)",
184 inet_ntoa(ap->addr), ap->location);
185 dl_list_del(&ap->list);
186 wps_er_ap_free(ap);
187
188 if (er->deinitializing && dl_list_empty(&er->ap_unsubscribing)) {
189 eloop_cancel_timeout(wps_er_deinit_finish, er, NULL);
190 wps_er_deinit_finish(er, NULL);
191 }
192 }
193
194
wps_er_http_unsubscribe_cb(void * ctx,struct http_client * c,enum http_client_event event)195 static void wps_er_http_unsubscribe_cb(void *ctx, struct http_client *c,
196 enum http_client_event event)
197 {
198 struct wps_er_ap *ap = ctx;
199
200 switch (event) {
201 case HTTP_CLIENT_OK:
202 wpa_printf(MSG_DEBUG, "WPS ER: Unsubscribed from events");
203 ap->subscribed = 0;
204 break;
205 case HTTP_CLIENT_FAILED:
206 case HTTP_CLIENT_INVALID_REPLY:
207 case HTTP_CLIENT_TIMEOUT:
208 wpa_printf(MSG_DEBUG, "WPS ER: Failed to unsubscribe from "
209 "events");
210 break;
211 }
212 http_client_free(ap->http);
213 ap->http = NULL;
214
215 /*
216 * Need to get rid of the AP entry regardless of whether we managed to
217 * unsubscribe cleanly or not.
218 */
219 wps_er_ap_unsubscribed(ap->er, ap);
220 }
221
222
wps_er_ap_unsubscribe(struct wps_er * er,struct wps_er_ap * ap)223 static void wps_er_ap_unsubscribe(struct wps_er *er, struct wps_er_ap *ap)
224 {
225 struct wpabuf *req;
226 struct sockaddr_in dst;
227 char *url, *path;
228 char sid[100];
229
230 if (ap->event_sub_url == NULL) {
231 wpa_printf(MSG_DEBUG, "WPS ER: No eventSubURL - cannot "
232 "subscribe");
233 goto fail;
234 }
235 if (ap->http) {
236 wpa_printf(MSG_DEBUG, "WPS ER: Pending HTTP request - cannot "
237 "send subscribe request");
238 goto fail;
239 }
240
241 url = http_client_url_parse(ap->event_sub_url, &dst, &path);
242 if (url == NULL) {
243 wpa_printf(MSG_DEBUG, "WPS ER: Failed to parse eventSubURL");
244 goto fail;
245 }
246
247 req = wpabuf_alloc(os_strlen(ap->event_sub_url) + 1000);
248 if (req == NULL) {
249 os_free(url);
250 goto fail;
251 }
252 uuid_bin2str(ap->sid, sid, sizeof(sid));
253 wpabuf_printf(req,
254 "UNSUBSCRIBE %s HTTP/1.1\r\n"
255 "HOST: %s:%d\r\n"
256 "SID: uuid:%s\r\n"
257 "\r\n",
258 path, inet_ntoa(dst.sin_addr), ntohs(dst.sin_port), sid);
259 os_free(url);
260 wpa_hexdump_ascii(MSG_MSGDUMP, "WPS ER: Unsubscription request",
261 wpabuf_head(req), wpabuf_len(req));
262
263 ap->http = http_client_addr(&dst, req, 1000,
264 wps_er_http_unsubscribe_cb, ap);
265 if (ap->http == NULL) {
266 wpabuf_free(req);
267 goto fail;
268 }
269 return;
270
271 fail:
272 /*
273 * Need to get rid of the AP entry even when we fail to unsubscribe
274 * cleanly.
275 */
276 wps_er_ap_unsubscribed(ap->er, ap);
277 }
278
279
wps_er_ap_get_settings(struct wps_er * er,const u8 * uuid)280 static struct wps_er_ap_settings * wps_er_ap_get_settings(struct wps_er *er,
281 const u8 *uuid)
282 {
283 struct wps_er_ap_settings *s;
284 dl_list_for_each(s, &er->ap_settings, struct wps_er_ap_settings, list)
285 if (os_memcmp(uuid, s->uuid, WPS_UUID_LEN) == 0)
286 return s;
287 return NULL;
288 }
289
290
wps_er_ap_cache_settings(struct wps_er * er,struct in_addr * addr)291 int wps_er_ap_cache_settings(struct wps_er *er, struct in_addr *addr)
292 {
293 struct wps_er_ap *ap;
294 struct wps_er_ap_settings *settings;
295
296 ap = wps_er_ap_get(er, addr, NULL, NULL);
297 if (ap == NULL || ap->ap_settings == NULL)
298 return -1;
299
300 settings = wps_er_ap_get_settings(er, ap->uuid);
301 if (!settings) {
302 settings = os_zalloc(sizeof(*settings));
303 if (settings == NULL)
304 return -1;
305 os_memcpy(settings->uuid, ap->uuid, WPS_UUID_LEN);
306 dl_list_add(&er->ap_settings, &settings->list);
307 }
308 os_memcpy(&settings->ap_settings, ap->ap_settings,
309 sizeof(struct wps_credential));
310
311 return 0;
312 }
313
314
wps_er_ap_use_cached_settings(struct wps_er * er,struct wps_er_ap * ap)315 static int wps_er_ap_use_cached_settings(struct wps_er *er,
316 struct wps_er_ap *ap)
317 {
318 struct wps_er_ap_settings *s;
319
320 if (ap->ap_settings)
321 return 0;
322
323 s = wps_er_ap_get_settings(ap->er, ap->uuid);
324 if (!s)
325 return -1;
326
327 ap->ap_settings = os_malloc(sizeof(*ap->ap_settings));
328 if (ap->ap_settings == NULL)
329 return -1;
330
331 os_memcpy(ap->ap_settings, &s->ap_settings, sizeof(*ap->ap_settings));
332 wpa_printf(MSG_DEBUG, "WPS ER: Use cached AP settings");
333 return 0;
334 }
335
336
wps_er_ap_remove_entry(struct wps_er * er,struct wps_er_ap * ap)337 static void wps_er_ap_remove_entry(struct wps_er *er, struct wps_er_ap *ap)
338 {
339 wpa_printf(MSG_DEBUG, "WPS ER: Removing AP entry for %s (%s)",
340 inet_ntoa(ap->addr), ap->location);
341 eloop_cancel_timeout(wps_er_ap_timeout, er, ap);
342 wps_er_sta_remove_all(ap);
343 wps_er_ap_event(er->wps, ap, WPS_EV_ER_AP_REMOVE);
344 http_client_free(ap->http);
345 ap->http = NULL;
346 if (ap->wps) {
347 wps_deinit(ap->wps);
348 ap->wps = NULL;
349 }
350
351 dl_list_del(&ap->list);
352 if (ap->subscribed) {
353 dl_list_add(&er->ap_unsubscribing, &ap->list);
354 wps_er_ap_unsubscribe(er, ap);
355 } else
356 wps_er_ap_free(ap);
357 }
358
359
wps_er_ap_timeout(void * eloop_data,void * user_ctx)360 static void wps_er_ap_timeout(void *eloop_data, void *user_ctx)
361 {
362 struct wps_er *er = eloop_data;
363 struct wps_er_ap *ap = user_ctx;
364 wpa_printf(MSG_DEBUG, "WPS ER: AP advertisement timed out");
365 wps_er_ap_remove_entry(er, ap);
366 }
367
368
wps_er_get_sid(struct wps_er_ap * ap,char * sid)369 static int wps_er_get_sid(struct wps_er_ap *ap, char *sid)
370 {
371 char *pos;
372 char txt[100];
373
374 if (!sid) {
375 wpa_printf(MSG_DEBUG, "WPS ER: No SID received from %s (%s)",
376 inet_ntoa(ap->addr), ap->location);
377 return -1;
378 }
379
380 pos = os_strstr(sid, "uuid:");
381 if (!pos) {
382 wpa_printf(MSG_DEBUG, "WPS ER: Invalid SID received from "
383 "%s (%s): '%s'", inet_ntoa(ap->addr), ap->location,
384 sid);
385 return -1;
386 }
387
388 pos += 5;
389 if (uuid_str2bin(pos, ap->sid) < 0) {
390 wpa_printf(MSG_DEBUG, "WPS ER: Invalid SID received from "
391 "%s (%s): '%s'", inet_ntoa(ap->addr), ap->location,
392 sid);
393 return -1;
394 }
395
396 uuid_bin2str(ap->sid, txt, sizeof(txt));
397 wpa_printf(MSG_DEBUG, "WPS ER: SID for subscription with %s (%s): %s",
398 inet_ntoa(ap->addr), ap->location, txt);
399
400 return 0;
401 }
402
403
wps_er_http_subscribe_cb(void * ctx,struct http_client * c,enum http_client_event event)404 static void wps_er_http_subscribe_cb(void *ctx, struct http_client *c,
405 enum http_client_event event)
406 {
407 struct wps_er_ap *ap = ctx;
408
409 switch (event) {
410 case HTTP_CLIENT_OK:
411 wpa_printf(MSG_DEBUG, "WPS ER: Subscribed to events");
412 ap->subscribed = 1;
413 wps_er_get_sid(ap, http_client_get_hdr_line(c, "SID"));
414 wps_er_ap_use_cached_settings(ap->er, ap);
415 wps_er_ap_event(ap->er->wps, ap, WPS_EV_ER_AP_ADD);
416 break;
417 case HTTP_CLIENT_FAILED:
418 case HTTP_CLIENT_INVALID_REPLY:
419 case HTTP_CLIENT_TIMEOUT:
420 wpa_printf(MSG_DEBUG, "WPS ER: Failed to subscribe to events");
421 break;
422 }
423 http_client_free(ap->http);
424 ap->http = NULL;
425 }
426
427
wps_er_subscribe(struct wps_er_ap * ap)428 static void wps_er_subscribe(struct wps_er_ap *ap)
429 {
430 struct wpabuf *req;
431 struct sockaddr_in dst;
432 char *url, *path;
433
434 if (ap->event_sub_url == NULL) {
435 wpa_printf(MSG_DEBUG, "WPS ER: No eventSubURL - cannot "
436 "subscribe");
437 return;
438 }
439 if (ap->http) {
440 wpa_printf(MSG_DEBUG, "WPS ER: Pending HTTP request - cannot "
441 "send subscribe request");
442 return;
443 }
444
445 url = http_client_url_parse(ap->event_sub_url, &dst, &path);
446 if (url == NULL) {
447 wpa_printf(MSG_DEBUG, "WPS ER: Failed to parse eventSubURL");
448 return;
449 }
450
451 req = wpabuf_alloc(os_strlen(ap->event_sub_url) + 1000);
452 if (req == NULL) {
453 os_free(url);
454 return;
455 }
456 wpabuf_printf(req,
457 "SUBSCRIBE %s HTTP/1.1\r\n"
458 "HOST: %s:%d\r\n"
459 "CALLBACK: <http://%s:%d/event/%u/%u>\r\n"
460 "NT: upnp:event\r\n"
461 "TIMEOUT: Second-%d\r\n"
462 "\r\n",
463 path, inet_ntoa(dst.sin_addr), ntohs(dst.sin_port),
464 ap->er->ip_addr_text, ap->er->http_port,
465 ap->er->event_id, ap->id, 1800);
466 os_free(url);
467 wpa_hexdump_ascii(MSG_MSGDUMP, "WPS ER: Subscription request",
468 wpabuf_head(req), wpabuf_len(req));
469
470 ap->http = http_client_addr(&dst, req, 1000, wps_er_http_subscribe_cb,
471 ap);
472 if (ap->http == NULL)
473 wpabuf_free(req);
474 }
475
476
wps_er_ap_get_m1(struct wps_er_ap * ap,struct wpabuf * m1)477 static void wps_er_ap_get_m1(struct wps_er_ap *ap, struct wpabuf *m1)
478 {
479 struct wps_parse_attr attr;
480
481 if (wps_parse_msg(m1, &attr) < 0) {
482 wpa_printf(MSG_DEBUG, "WPS ER: Failed to parse M1");
483 return;
484 }
485 if (attr.primary_dev_type)
486 os_memcpy(ap->pri_dev_type, attr.primary_dev_type, 8);
487 if (attr.wps_state)
488 ap->wps_state = *attr.wps_state;
489 if (attr.mac_addr)
490 os_memcpy(ap->mac_addr, attr.mac_addr, ETH_ALEN);
491
492 wps_er_subscribe(ap);
493 }
494
495
wps_er_get_device_info(struct wps_er_ap * ap)496 static void wps_er_get_device_info(struct wps_er_ap *ap)
497 {
498 wps_er_send_get_device_info(ap, wps_er_ap_get_m1);
499 }
500
501
wps_er_find_wfadevice(const char * data)502 static const char * wps_er_find_wfadevice(const char *data)
503 {
504 const char *tag, *tagname, *end;
505 char *val;
506 int found = 0;
507
508 while (!found) {
509 /* Find next <device> */
510 for (;;) {
511 if (xml_next_tag(data, &tag, &tagname, &end))
512 return NULL;
513 data = end;
514 if (!os_strncasecmp(tagname, "device", 6) &&
515 *tag != '/' &&
516 (tagname[6] == '>' || !isgraph(tagname[6]))) {
517 break;
518 }
519 }
520
521 /* Check whether deviceType is WFADevice */
522 val = xml_get_first_item(data, "deviceType");
523 if (val == NULL)
524 return NULL;
525 wpa_printf(MSG_DEBUG, "WPS ER: Found deviceType '%s'", val);
526 found = os_strcasecmp(val, "urn:schemas-wifialliance-org:"
527 "device:WFADevice:1") == 0;
528 os_free(val);
529 }
530
531 return data;
532 }
533
534
wps_er_parse_device_description(struct wps_er_ap * ap,struct wpabuf * reply)535 static void wps_er_parse_device_description(struct wps_er_ap *ap,
536 struct wpabuf *reply)
537 {
538 /* Note: reply includes null termination after the buffer data */
539 const char *tmp, *data = wpabuf_head(reply);
540 char *pos;
541
542 wpa_hexdump_ascii(MSG_MSGDUMP, "WPS ER: Device info",
543 wpabuf_head(reply), wpabuf_len(reply));
544
545 /*
546 * The root device description may include multiple devices, so first
547 * find the beginning of the WFADevice description to allow the
548 * simplistic parser to pick the correct entries.
549 */
550 tmp = wps_er_find_wfadevice(data);
551 if (tmp == NULL) {
552 wpa_printf(MSG_DEBUG, "WPS ER: WFADevice:1 device not found - "
553 "trying to parse invalid data");
554 } else
555 data = tmp;
556
557 ap->friendly_name = xml_get_first_item(data, "friendlyName");
558 wpa_printf(MSG_DEBUG, "WPS ER: friendlyName='%s'", ap->friendly_name);
559
560 ap->manufacturer = xml_get_first_item(data, "manufacturer");
561 wpa_printf(MSG_DEBUG, "WPS ER: manufacturer='%s'", ap->manufacturer);
562
563 ap->manufacturer_url = xml_get_first_item(data, "manufacturerURL");
564 wpa_printf(MSG_DEBUG, "WPS ER: manufacturerURL='%s'",
565 ap->manufacturer_url);
566
567 ap->model_description = xml_get_first_item(data, "modelDescription");
568 wpa_printf(MSG_DEBUG, "WPS ER: modelDescription='%s'",
569 ap->model_description);
570
571 ap->model_name = xml_get_first_item(data, "modelName");
572 wpa_printf(MSG_DEBUG, "WPS ER: modelName='%s'", ap->model_name);
573
574 ap->model_number = xml_get_first_item(data, "modelNumber");
575 wpa_printf(MSG_DEBUG, "WPS ER: modelNumber='%s'", ap->model_number);
576
577 ap->model_url = xml_get_first_item(data, "modelURL");
578 wpa_printf(MSG_DEBUG, "WPS ER: modelURL='%s'", ap->model_url);
579
580 ap->serial_number = xml_get_first_item(data, "serialNumber");
581 wpa_printf(MSG_DEBUG, "WPS ER: serialNumber='%s'", ap->serial_number);
582
583 ap->udn = xml_get_first_item(data, "UDN");
584 wpa_printf(MSG_DEBUG, "WPS ER: UDN='%s'", ap->udn);
585 pos = os_strstr(ap->udn, "uuid:");
586 if (pos) {
587 pos += 5;
588 if (uuid_str2bin(pos, ap->uuid) < 0)
589 wpa_printf(MSG_DEBUG, "WPS ER: Invalid UUID in UDN");
590 }
591
592 ap->upc = xml_get_first_item(data, "UPC");
593 wpa_printf(MSG_DEBUG, "WPS ER: UPC='%s'", ap->upc);
594
595 ap->scpd_url = http_link_update(
596 xml_get_first_item(data, "SCPDURL"), ap->location);
597 wpa_printf(MSG_DEBUG, "WPS ER: SCPDURL='%s'", ap->scpd_url);
598
599 ap->control_url = http_link_update(
600 xml_get_first_item(data, "controlURL"), ap->location);
601 wpa_printf(MSG_DEBUG, "WPS ER: controlURL='%s'", ap->control_url);
602
603 ap->event_sub_url = http_link_update(
604 xml_get_first_item(data, "eventSubURL"), ap->location);
605 wpa_printf(MSG_DEBUG, "WPS ER: eventSubURL='%s'", ap->event_sub_url);
606 }
607
608
wps_er_http_dev_desc_cb(void * ctx,struct http_client * c,enum http_client_event event)609 static void wps_er_http_dev_desc_cb(void *ctx, struct http_client *c,
610 enum http_client_event event)
611 {
612 struct wps_er_ap *ap = ctx;
613 struct wpabuf *reply;
614 int ok = 0;
615
616 switch (event) {
617 case HTTP_CLIENT_OK:
618 reply = http_client_get_body(c);
619 if (reply == NULL)
620 break;
621 wps_er_parse_device_description(ap, reply);
622 ok = 1;
623 break;
624 case HTTP_CLIENT_FAILED:
625 case HTTP_CLIENT_INVALID_REPLY:
626 case HTTP_CLIENT_TIMEOUT:
627 wpa_printf(MSG_DEBUG, "WPS ER: Failed to fetch device info");
628 break;
629 }
630 http_client_free(ap->http);
631 ap->http = NULL;
632 if (ok)
633 wps_er_get_device_info(ap);
634 }
635
636
wps_er_ap_add(struct wps_er * er,const u8 * uuid,struct in_addr * addr,const char * location,int max_age)637 void wps_er_ap_add(struct wps_er *er, const u8 *uuid, struct in_addr *addr,
638 const char *location, int max_age)
639 {
640 struct wps_er_ap *ap;
641
642 ap = wps_er_ap_get(er, addr, uuid, NULL);
643 if (ap) {
644 /* Update advertisement timeout */
645 eloop_cancel_timeout(wps_er_ap_timeout, er, ap);
646 eloop_register_timeout(max_age, 0, wps_er_ap_timeout, er, ap);
647 return;
648 }
649
650 ap = os_zalloc(sizeof(*ap));
651 if (ap == NULL)
652 return;
653 dl_list_init(&ap->sta);
654 ap->er = er;
655 ap->id = ++er->next_ap_id;
656 ap->location = os_strdup(location);
657 if (ap->location == NULL) {
658 os_free(ap);
659 return;
660 }
661 dl_list_add(&er->ap, &ap->list);
662
663 ap->addr.s_addr = addr->s_addr;
664 os_memcpy(ap->uuid, uuid, WPS_UUID_LEN);
665 eloop_register_timeout(max_age, 0, wps_er_ap_timeout, er, ap);
666
667 wpa_printf(MSG_DEBUG, "WPS ER: Added AP entry for %s (%s)",
668 inet_ntoa(ap->addr), ap->location);
669
670 /* Fetch device description */
671 ap->http = http_client_url(ap->location, NULL, 10000,
672 wps_er_http_dev_desc_cb, ap);
673 }
674
675
wps_er_ap_remove(struct wps_er * er,struct in_addr * addr)676 void wps_er_ap_remove(struct wps_er *er, struct in_addr *addr)
677 {
678 struct wps_er_ap *ap;
679 dl_list_for_each(ap, &er->ap, struct wps_er_ap, list) {
680 if (ap->addr.s_addr == addr->s_addr) {
681 wps_er_ap_remove_entry(er, ap);
682 return;
683 }
684 }
685 }
686
687
wps_er_ap_remove_all(struct wps_er * er)688 static void wps_er_ap_remove_all(struct wps_er *er)
689 {
690 struct wps_er_ap *prev, *ap;
691 struct wps_er_ap_settings *prev_s, *s;
692 dl_list_for_each_safe(ap, prev, &er->ap, struct wps_er_ap, list)
693 wps_er_ap_remove_entry(er, ap);
694 dl_list_for_each_safe(s, prev_s, &er->ap_settings,
695 struct wps_er_ap_settings, list)
696 os_free(s);
697 }
698
699
http_put_date(struct wpabuf * buf)700 static void http_put_date(struct wpabuf *buf)
701 {
702 wpabuf_put_str(buf, "Date: ");
703 format_date(buf);
704 wpabuf_put_str(buf, "\r\n");
705 }
706
707
wps_er_http_resp_not_found(struct http_request * req)708 static void wps_er_http_resp_not_found(struct http_request *req)
709 {
710 struct wpabuf *buf;
711 buf = wpabuf_alloc(200);
712 if (buf == NULL) {
713 http_request_deinit(req);
714 return;
715 }
716
717 wpabuf_put_str(buf,
718 "HTTP/1.1 404 Not Found\r\n"
719 "Server: unspecified, UPnP/1.0, unspecified\r\n"
720 "Connection: close\r\n");
721 http_put_date(buf);
722 wpabuf_put_str(buf, "\r\n");
723 http_request_send_and_deinit(req, buf);
724 }
725
726
wps_er_http_resp_ok(struct http_request * req)727 static void wps_er_http_resp_ok(struct http_request *req)
728 {
729 struct wpabuf *buf;
730 buf = wpabuf_alloc(200);
731 if (buf == NULL) {
732 http_request_deinit(req);
733 return;
734 }
735
736 wpabuf_put_str(buf,
737 "HTTP/1.1 200 OK\r\n"
738 "Server: unspecified, UPnP/1.0, unspecified\r\n"
739 "Connection: close\r\n"
740 "Content-Length: 0\r\n");
741 http_put_date(buf);
742 wpabuf_put_str(buf, "\r\n");
743 http_request_send_and_deinit(req, buf);
744 }
745
746
wps_er_sta_timeout(void * eloop_data,void * user_ctx)747 static void wps_er_sta_timeout(void *eloop_data, void *user_ctx)
748 {
749 struct wps_er_sta *sta = eloop_data;
750 wpa_printf(MSG_DEBUG, "WPS ER: STA entry timed out");
751 dl_list_del(&sta->list);
752 wps_er_sta_free(sta);
753 }
754
755
wps_er_add_sta_data(struct wps_er_ap * ap,const u8 * addr,struct wps_parse_attr * attr,int probe_req)756 static struct wps_er_sta * wps_er_add_sta_data(struct wps_er_ap *ap,
757 const u8 *addr,
758 struct wps_parse_attr *attr,
759 int probe_req)
760 {
761 struct wps_er_sta *sta = wps_er_sta_get(ap, addr, NULL);
762 int new_sta = 0;
763 int m1;
764
765 m1 = !probe_req && attr->msg_type && *attr->msg_type == WPS_M1;
766
767 if (sta == NULL) {
768 /*
769 * Only allow new STA entry to be added based on Probe Request
770 * or M1. This will filter out bogus events and anything that
771 * may have been ongoing at the time ER subscribed for events.
772 */
773 if (!probe_req && !m1)
774 return NULL;
775
776 sta = os_zalloc(sizeof(*sta));
777 if (sta == NULL)
778 return NULL;
779 os_memcpy(sta->addr, addr, ETH_ALEN);
780 sta->ap = ap;
781 dl_list_add(&ap->sta, &sta->list);
782 new_sta = 1;
783 }
784
785 if (m1)
786 sta->m1_received = 1;
787
788 if (attr->config_methods && (!probe_req || !sta->m1_received))
789 sta->config_methods = WPA_GET_BE16(attr->config_methods);
790 if (attr->uuid_e && (!probe_req || !sta->m1_received))
791 os_memcpy(sta->uuid, attr->uuid_e, WPS_UUID_LEN);
792 if (attr->primary_dev_type && (!probe_req || !sta->m1_received))
793 os_memcpy(sta->pri_dev_type, attr->primary_dev_type, 8);
794 if (attr->dev_password_id && (!probe_req || !sta->m1_received))
795 sta->dev_passwd_id = WPA_GET_BE16(attr->dev_password_id);
796
797 if (attr->manufacturer) {
798 os_free(sta->manufacturer);
799 sta->manufacturer = dup_binstr(attr->manufacturer,
800 attr->manufacturer_len);
801 }
802
803 if (attr->model_name) {
804 os_free(sta->model_name);
805 sta->model_name = dup_binstr(attr->model_name,
806 attr->model_name_len);
807 }
808
809 if (attr->model_number) {
810 os_free(sta->model_number);
811 sta->model_number = dup_binstr(attr->model_number,
812 attr->model_number_len);
813 }
814
815 if (attr->serial_number) {
816 os_free(sta->serial_number);
817 sta->serial_number = dup_binstr(attr->serial_number,
818 attr->serial_number_len);
819 }
820
821 if (attr->dev_name) {
822 os_free(sta->dev_name);
823 sta->dev_name = dup_binstr(attr->dev_name, attr->dev_name_len);
824 }
825
826 eloop_cancel_timeout(wps_er_sta_timeout, sta, NULL);
827 eloop_register_timeout(300, 0, wps_er_sta_timeout, sta, NULL);
828
829 if (m1 || new_sta)
830 wps_er_sta_event(ap->er->wps, sta, WPS_EV_ER_ENROLLEE_ADD);
831
832 return sta;
833 }
834
835
wps_er_process_wlanevent_probe_req(struct wps_er_ap * ap,const u8 * addr,struct wpabuf * msg)836 static void wps_er_process_wlanevent_probe_req(struct wps_er_ap *ap,
837 const u8 *addr,
838 struct wpabuf *msg)
839 {
840 struct wps_parse_attr attr;
841
842 wpa_printf(MSG_DEBUG, "WPS ER: WLANEvent - Probe Request - from "
843 MACSTR, MAC2STR(addr));
844 wpa_hexdump_buf(MSG_MSGDUMP, "WPS ER: WLANEvent - Enrollee's message "
845 "(TLVs from Probe Request)", msg);
846
847 if (wps_validate_probe_req(msg, addr) < 0) {
848 wpa_printf(MSG_INFO, "WPS-STRICT: ER: Ignore invalid proxied "
849 "Probe Request frame from " MACSTR, MAC2STR(addr));
850 return;
851 }
852
853 if (wps_parse_msg(msg, &attr) < 0) {
854 wpa_printf(MSG_DEBUG, "WPS ER: Failed to parse TLVs in "
855 "WLANEvent message");
856 return;
857 }
858
859 wps_er_add_sta_data(ap, addr, &attr, 1);
860 wps_registrar_probe_req_rx(ap->er->wps->registrar, addr, msg, 0);
861 }
862
863
wps_er_http_put_wlan_response_cb(void * ctx,struct http_client * c,enum http_client_event event)864 static void wps_er_http_put_wlan_response_cb(void *ctx, struct http_client *c,
865 enum http_client_event event)
866 {
867 struct wps_er_sta *sta = ctx;
868
869 switch (event) {
870 case HTTP_CLIENT_OK:
871 wpa_printf(MSG_DEBUG, "WPS ER: PutWLANResponse OK");
872 break;
873 case HTTP_CLIENT_FAILED:
874 case HTTP_CLIENT_INVALID_REPLY:
875 case HTTP_CLIENT_TIMEOUT:
876 wpa_printf(MSG_DEBUG, "WPS ER: PutWLANResponse failed");
877 break;
878 }
879 http_client_free(sta->http);
880 sta->http = NULL;
881 }
882
883
884 static const char *soap_prefix =
885 "<?xml version=\"1.0\"?>\n"
886 "<s:Envelope xmlns:s=\"http://schemas.xmlsoap.org/soap/envelope/\" "
887 "s:encodingStyle=\"http://schemas.xmlsoap.org/soap/encoding/\">\n"
888 "<s:Body>\n";
889 static const char *soap_postfix =
890 "</s:Body>\n</s:Envelope>\n";
891 static const char *urn_wfawlanconfig =
892 "urn:schemas-wifialliance-org:service:WFAWLANConfig:1";
893
wps_er_soap_hdr(const struct wpabuf * msg,const char * name,const char * arg_name,const char * path,const struct sockaddr_in * dst,char ** len_ptr,char ** body_ptr)894 static struct wpabuf * wps_er_soap_hdr(const struct wpabuf *msg,
895 const char *name, const char *arg_name,
896 const char *path,
897 const struct sockaddr_in *dst,
898 char **len_ptr, char **body_ptr)
899 {
900 unsigned char *encoded;
901 size_t encoded_len;
902 struct wpabuf *buf;
903
904 if (msg) {
905 encoded = base64_encode(wpabuf_head(msg), wpabuf_len(msg),
906 &encoded_len);
907 if (encoded == NULL)
908 return NULL;
909 } else {
910 encoded = NULL;
911 encoded_len = 0;
912 }
913
914 buf = wpabuf_alloc(1000 + encoded_len);
915 if (buf == NULL) {
916 os_free(encoded);
917 return NULL;
918 }
919
920 wpabuf_printf(buf,
921 "POST %s HTTP/1.1\r\n"
922 "Host: %s:%d\r\n"
923 "Content-Type: text/xml; charset=\"utf-8\"\r\n"
924 "Content-Length: ",
925 path, inet_ntoa(dst->sin_addr), ntohs(dst->sin_port));
926
927 *len_ptr = wpabuf_put(buf, 0);
928 wpabuf_printf(buf,
929 " \r\n"
930 "SOAPACTION: \"%s#%s\"\r\n"
931 "\r\n",
932 urn_wfawlanconfig, name);
933
934 *body_ptr = wpabuf_put(buf, 0);
935
936 wpabuf_put_str(buf, soap_prefix);
937 wpabuf_printf(buf, "<u:%s xmlns:u=\"", name);
938 wpabuf_put_str(buf, urn_wfawlanconfig);
939 wpabuf_put_str(buf, "\">\n");
940 if (encoded) {
941 wpabuf_printf(buf, "<%s>%s</%s>\n",
942 arg_name, (char *) encoded, arg_name);
943 os_free(encoded);
944 }
945
946 return buf;
947 }
948
949
wps_er_soap_end(struct wpabuf * buf,const char * name,char * len_ptr,char * body_ptr)950 static void wps_er_soap_end(struct wpabuf *buf, const char *name,
951 char *len_ptr, char *body_ptr)
952 {
953 char len_buf[10];
954 wpabuf_printf(buf, "</u:%s>\n", name);
955 wpabuf_put_str(buf, soap_postfix);
956 os_snprintf(len_buf, sizeof(len_buf), "%d",
957 (int) ((char *) wpabuf_put(buf, 0) - body_ptr));
958 os_memcpy(len_ptr, len_buf, os_strlen(len_buf));
959 }
960
961
wps_er_sta_send_msg(struct wps_er_sta * sta,struct wpabuf * msg)962 static void wps_er_sta_send_msg(struct wps_er_sta *sta, struct wpabuf *msg)
963 {
964 struct wpabuf *buf;
965 char *len_ptr, *body_ptr;
966 struct sockaddr_in dst;
967 char *url, *path;
968
969 if (sta->http) {
970 wpa_printf(MSG_DEBUG, "WPS ER: Pending HTTP request for STA - "
971 "ignore new request");
972 wpabuf_free(msg);
973 return;
974 }
975
976 if (sta->ap->control_url == NULL) {
977 wpa_printf(MSG_DEBUG, "WPS ER: No controlURL for AP");
978 wpabuf_free(msg);
979 return;
980 }
981
982 url = http_client_url_parse(sta->ap->control_url, &dst, &path);
983 if (url == NULL) {
984 wpa_printf(MSG_DEBUG, "WPS ER: Failed to parse controlURL");
985 wpabuf_free(msg);
986 return;
987 }
988
989 buf = wps_er_soap_hdr(msg, "PutWLANResponse", "NewMessage", path, &dst,
990 &len_ptr, &body_ptr);
991 wpabuf_free(msg);
992 os_free(url);
993 if (buf == NULL)
994 return;
995 wpabuf_printf(buf, "<NewWLANEventType>%d</NewWLANEventType>\n",
996 UPNP_WPS_WLANEVENT_TYPE_EAP);
997 wpabuf_printf(buf, "<NewWLANEventMAC>" MACSTR "</NewWLANEventMAC>\n",
998 MAC2STR(sta->addr));
999
1000 wps_er_soap_end(buf, "PutWLANResponse", len_ptr, body_ptr);
1001
1002 sta->http = http_client_addr(&dst, buf, 1000,
1003 wps_er_http_put_wlan_response_cb, sta);
1004 if (sta->http == NULL)
1005 wpabuf_free(buf);
1006 }
1007
1008
wps_er_sta_process(struct wps_er_sta * sta,struct wpabuf * msg,enum wsc_op_code op_code)1009 static void wps_er_sta_process(struct wps_er_sta *sta, struct wpabuf *msg,
1010 enum wsc_op_code op_code)
1011 {
1012 enum wps_process_res res;
1013
1014 res = wps_process_msg(sta->wps, op_code, msg);
1015 if (res == WPS_CONTINUE) {
1016 struct wpabuf *next = wps_get_msg(sta->wps, &op_code);
1017 if (next)
1018 wps_er_sta_send_msg(sta, next);
1019 } else {
1020 wpa_printf(MSG_DEBUG, "WPS ER: Protocol run %s with the "
1021 "enrollee (res=%d)",
1022 res == WPS_DONE ? "succeeded" : "failed", res);
1023 wps_deinit(sta->wps);
1024 sta->wps = NULL;
1025 if (res == WPS_DONE) {
1026 /* Remove the STA entry after short timeout */
1027 eloop_cancel_timeout(wps_er_sta_timeout, sta, NULL);
1028 eloop_register_timeout(10, 0, wps_er_sta_timeout, sta,
1029 NULL);
1030 }
1031 }
1032 }
1033
1034
wps_er_sta_start(struct wps_er_sta * sta,struct wpabuf * msg)1035 static void wps_er_sta_start(struct wps_er_sta *sta, struct wpabuf *msg)
1036 {
1037 struct wps_config cfg;
1038
1039 if (sta->wps)
1040 wps_deinit(sta->wps);
1041
1042 os_memset(&cfg, 0, sizeof(cfg));
1043 cfg.wps = sta->ap->er->wps;
1044 cfg.registrar = 1;
1045 cfg.peer_addr = sta->addr;
1046
1047 sta->wps = wps_init(&cfg);
1048 if (sta->wps == NULL)
1049 return;
1050 sta->wps->er = 1;
1051 sta->wps->use_cred = sta->ap->ap_settings;
1052 if (sta->ap->ap_settings) {
1053 os_free(sta->cred);
1054 sta->cred = os_malloc(sizeof(*sta->cred));
1055 if (sta->cred) {
1056 os_memcpy(sta->cred, sta->ap->ap_settings,
1057 sizeof(*sta->cred));
1058 sta->cred->cred_attr = NULL;
1059 os_memcpy(sta->cred->mac_addr, sta->addr, ETH_ALEN);
1060 sta->wps->use_cred = sta->cred;
1061 }
1062 }
1063
1064 wps_er_sta_process(sta, msg, WSC_MSG);
1065 }
1066
1067
wps_er_process_wlanevent_eap(struct wps_er_ap * ap,const u8 * addr,struct wpabuf * msg)1068 static void wps_er_process_wlanevent_eap(struct wps_er_ap *ap, const u8 *addr,
1069 struct wpabuf *msg)
1070 {
1071 struct wps_parse_attr attr;
1072 struct wps_er_sta *sta;
1073
1074 wpa_printf(MSG_DEBUG, "WPS ER: WLANEvent - EAP - from " MACSTR,
1075 MAC2STR(addr));
1076 wpa_hexdump_buf(MSG_MSGDUMP, "WPS ER: WLANEvent - Enrollee's message "
1077 "(TLVs from EAP-WSC)", msg);
1078
1079 if (wps_parse_msg(msg, &attr) < 0) {
1080 wpa_printf(MSG_DEBUG, "WPS ER: Failed to parse TLVs in "
1081 "WLANEvent message");
1082 return;
1083 }
1084
1085 sta = wps_er_add_sta_data(ap, addr, &attr, 0);
1086 if (sta == NULL)
1087 return;
1088
1089 if (attr.msg_type && *attr.msg_type == WPS_M1)
1090 wps_er_sta_start(sta, msg);
1091 else if (sta->wps) {
1092 enum wsc_op_code op_code = WSC_MSG;
1093 if (attr.msg_type) {
1094 switch (*attr.msg_type) {
1095 case WPS_WSC_ACK:
1096 op_code = WSC_ACK;
1097 break;
1098 case WPS_WSC_NACK:
1099 op_code = WSC_NACK;
1100 break;
1101 case WPS_WSC_DONE:
1102 op_code = WSC_Done;
1103 break;
1104 }
1105 }
1106 wps_er_sta_process(sta, msg, op_code);
1107 }
1108 }
1109
1110
wps_er_process_wlanevent(struct wps_er_ap * ap,struct wpabuf * event)1111 static void wps_er_process_wlanevent(struct wps_er_ap *ap,
1112 struct wpabuf *event)
1113 {
1114 u8 *data;
1115 u8 wlan_event_type;
1116 u8 wlan_event_mac[ETH_ALEN];
1117 struct wpabuf msg;
1118
1119 wpa_hexdump(MSG_MSGDUMP, "WPS ER: Received WLANEvent",
1120 wpabuf_head(event), wpabuf_len(event));
1121 if (wpabuf_len(event) < 1 + 17) {
1122 wpa_printf(MSG_DEBUG, "WPS ER: Too short WLANEvent");
1123 return;
1124 }
1125
1126 data = wpabuf_mhead(event);
1127 wlan_event_type = data[0];
1128 if (hwaddr_aton((char *) data + 1, wlan_event_mac) < 0) {
1129 wpa_printf(MSG_DEBUG, "WPS ER: Invalid WLANEventMAC in "
1130 "WLANEvent");
1131 return;
1132 }
1133
1134 wpabuf_set(&msg, data + 1 + 17, wpabuf_len(event) - (1 + 17));
1135
1136 switch (wlan_event_type) {
1137 case 1:
1138 wps_er_process_wlanevent_probe_req(ap, wlan_event_mac, &msg);
1139 break;
1140 case 2:
1141 wps_er_process_wlanevent_eap(ap, wlan_event_mac, &msg);
1142 break;
1143 default:
1144 wpa_printf(MSG_DEBUG, "WPS ER: Unknown WLANEventType %d",
1145 wlan_event_type);
1146 break;
1147 }
1148 }
1149
1150
wps_er_http_event(struct wps_er * er,struct http_request * req,unsigned int ap_id)1151 static void wps_er_http_event(struct wps_er *er, struct http_request *req,
1152 unsigned int ap_id)
1153 {
1154 struct wps_er_ap *ap = wps_er_ap_get_id(er, ap_id);
1155 struct wpabuf *event;
1156 enum http_reply_code ret;
1157
1158 if (ap == NULL) {
1159 wpa_printf(MSG_DEBUG, "WPS ER: HTTP event from unknown AP id "
1160 "%u", ap_id);
1161 wps_er_http_resp_not_found(req);
1162 return;
1163 }
1164 wpa_printf(MSG_MSGDUMP, "WPS ER: HTTP event from AP id %u: %s",
1165 ap_id, http_request_get_data(req));
1166
1167 event = xml_get_base64_item(http_request_get_data(req), "WLANEvent",
1168 &ret);
1169 if (event == NULL) {
1170 wpa_printf(MSG_DEBUG, "WPS ER: Could not extract WLANEvent "
1171 "from the event notification");
1172 /*
1173 * Reply with OK anyway to avoid getting unregistered from
1174 * events.
1175 */
1176 wps_er_http_resp_ok(req);
1177 return;
1178 }
1179
1180 wps_er_process_wlanevent(ap, event);
1181
1182 wpabuf_free(event);
1183 wps_er_http_resp_ok(req);
1184 }
1185
1186
wps_er_http_notify(struct wps_er * er,struct http_request * req)1187 static void wps_er_http_notify(struct wps_er *er, struct http_request *req)
1188 {
1189 char *uri = http_request_get_uri(req);
1190
1191 if (os_strncmp(uri, "/event/", 7) == 0) {
1192 unsigned int event_id;
1193 char *pos;
1194 event_id = atoi(uri + 7);
1195 if (event_id != er->event_id) {
1196 wpa_printf(MSG_DEBUG, "WPS ER: HTTP event for an "
1197 "unknown event id %u", event_id);
1198 return;
1199 }
1200 pos = os_strchr(uri + 7, '/');
1201 if (pos == NULL)
1202 return;
1203 pos++;
1204 wps_er_http_event(er, req, atoi(pos));
1205 } else {
1206 wpa_printf(MSG_DEBUG, "WPS ER: Unknown HTTP NOTIFY for '%s'",
1207 uri);
1208 wps_er_http_resp_not_found(req);
1209 }
1210 }
1211
1212
wps_er_http_req(void * ctx,struct http_request * req)1213 static void wps_er_http_req(void *ctx, struct http_request *req)
1214 {
1215 struct wps_er *er = ctx;
1216 struct sockaddr_in *cli = http_request_get_cli_addr(req);
1217 enum httpread_hdr_type type = http_request_get_type(req);
1218 struct wpabuf *buf;
1219
1220 wpa_printf(MSG_DEBUG, "WPS ER: HTTP request: '%s' (type %d) from "
1221 "%s:%d",
1222 http_request_get_uri(req), type,
1223 inet_ntoa(cli->sin_addr), ntohs(cli->sin_port));
1224
1225 switch (type) {
1226 case HTTPREAD_HDR_TYPE_NOTIFY:
1227 wps_er_http_notify(er, req);
1228 break;
1229 default:
1230 wpa_printf(MSG_DEBUG, "WPS ER: Unsupported HTTP request type "
1231 "%d", type);
1232 buf = wpabuf_alloc(200);
1233 if (buf == NULL) {
1234 http_request_deinit(req);
1235 return;
1236 }
1237 wpabuf_put_str(buf,
1238 "HTTP/1.1 501 Unimplemented\r\n"
1239 "Connection: close\r\n");
1240 http_put_date(buf);
1241 wpabuf_put_str(buf, "\r\n");
1242 http_request_send_and_deinit(req, buf);
1243 break;
1244 }
1245 }
1246
1247
1248 struct wps_er *
wps_er_init(struct wps_context * wps,const char * ifname,const char * filter)1249 wps_er_init(struct wps_context *wps, const char *ifname, const char *filter)
1250 {
1251 struct wps_er *er;
1252 struct in_addr addr;
1253
1254 er = os_zalloc(sizeof(*er));
1255 if (er == NULL)
1256 return NULL;
1257 dl_list_init(&er->ap);
1258 dl_list_init(&er->ap_unsubscribing);
1259 dl_list_init(&er->ap_settings);
1260
1261 er->multicast_sd = -1;
1262 er->ssdp_sd = -1;
1263
1264 os_strlcpy(er->ifname, ifname, sizeof(er->ifname));
1265 er->wps = wps;
1266 if (os_get_random((unsigned char *) &er->event_id,
1267 sizeof(er->event_id)) < 0) {
1268 wps_er_deinit(er, NULL, NULL);
1269 return NULL;
1270 }
1271 /* Limit event_id to < 32 bits to avoid issues with atoi() */
1272 er->event_id &= 0x0fffffff;
1273
1274 if (filter && os_strncmp(filter, "ifname=", 7) == 0) {
1275 const char *pos, *end;
1276 pos = filter + 7;
1277 end = os_strchr(pos, ' ');
1278 if (end) {
1279 size_t len = end - pos;
1280 os_strlcpy(er->ifname, pos, len < sizeof(er->ifname) ?
1281 len + 1 : sizeof(er->ifname));
1282 filter = end + 1;
1283 } else {
1284 os_strlcpy(er->ifname, pos, sizeof(er->ifname));
1285 filter = NULL;
1286 }
1287 er->forced_ifname = 1;
1288 }
1289
1290 if (filter) {
1291 if (inet_aton(filter, &er->filter_addr) == 0) {
1292 wpa_printf(MSG_INFO, "WPS UPnP: Invalid filter "
1293 "address %s", filter);
1294 wps_er_deinit(er, NULL, NULL);
1295 return NULL;
1296 }
1297 wpa_printf(MSG_DEBUG, "WPS UPnP: Only accepting connections "
1298 "with %s", filter);
1299 }
1300 if (get_netif_info(er->ifname, &er->ip_addr, &er->ip_addr_text,
1301 er->mac_addr)) {
1302 wpa_printf(MSG_INFO, "WPS UPnP: Could not get IP/MAC address "
1303 "for %s. Does it have IP address?", er->ifname);
1304 wps_er_deinit(er, NULL, NULL);
1305 return NULL;
1306 }
1307
1308 if (wps_er_ssdp_init(er) < 0) {
1309 wpa_printf(MSG_INFO, "WPS UPnP: SSDP initialization failed");
1310 wps_er_deinit(er, NULL, NULL);
1311 return NULL;
1312 }
1313
1314 addr.s_addr = er->ip_addr;
1315 er->http_srv = http_server_init(&addr, -1, wps_er_http_req, er);
1316 if (er->http_srv == NULL) {
1317 wpa_printf(MSG_INFO, "WPS UPnP: HTTP initialization failed");
1318 wps_er_deinit(er, NULL, NULL);
1319 return NULL;
1320 }
1321 er->http_port = http_server_get_port(er->http_srv);
1322
1323 wpa_printf(MSG_DEBUG, "WPS ER: Start (ifname=%s ip_addr=%s)",
1324 er->ifname, er->ip_addr_text);
1325
1326 return er;
1327 }
1328
1329
wps_er_refresh(struct wps_er * er)1330 void wps_er_refresh(struct wps_er *er)
1331 {
1332 struct wps_er_ap *ap;
1333 struct wps_er_sta *sta;
1334
1335 dl_list_for_each(ap, &er->ap, struct wps_er_ap, list) {
1336 wps_er_ap_event(er->wps, ap, WPS_EV_ER_AP_ADD);
1337 dl_list_for_each(sta, &ap->sta, struct wps_er_sta, list)
1338 wps_er_sta_event(er->wps, sta, WPS_EV_ER_ENROLLEE_ADD);
1339 }
1340
1341 wps_er_send_ssdp_msearch(er);
1342 }
1343
1344
wps_er_deinit_finish(void * eloop_data,void * user_ctx)1345 static void wps_er_deinit_finish(void *eloop_data, void *user_ctx)
1346 {
1347 struct wps_er *er = eloop_data;
1348 void (*deinit_done_cb)(void *ctx);
1349 void *deinit_done_ctx;
1350
1351 wpa_printf(MSG_DEBUG, "WPS ER: Finishing deinit");
1352
1353 deinit_done_cb = er->deinit_done_cb;
1354 deinit_done_ctx = er->deinit_done_ctx;
1355 os_free(er->ip_addr_text);
1356 os_free(er);
1357
1358 if (deinit_done_cb)
1359 deinit_done_cb(deinit_done_ctx);
1360 }
1361
1362
wps_er_deinit(struct wps_er * er,void (* cb)(void * ctx),void * ctx)1363 void wps_er_deinit(struct wps_er *er, void (*cb)(void *ctx), void *ctx)
1364 {
1365 if (er == NULL)
1366 return;
1367 http_server_deinit(er->http_srv);
1368 wps_er_ap_remove_all(er);
1369 wps_er_ssdp_deinit(er);
1370 eloop_register_timeout(dl_list_empty(&er->ap_unsubscribing) ? 0 : 5, 0,
1371 wps_er_deinit_finish, er, NULL);
1372 wpa_printf(MSG_DEBUG, "WPS ER: Finish deinit from timeout");
1373 er->deinitializing = 1;
1374 er->deinit_done_cb = cb;
1375 er->deinit_done_ctx = ctx;
1376 }
1377
1378
wps_er_http_set_sel_reg_cb(void * ctx,struct http_client * c,enum http_client_event event)1379 static void wps_er_http_set_sel_reg_cb(void *ctx, struct http_client *c,
1380 enum http_client_event event)
1381 {
1382 struct wps_er_ap *ap = ctx;
1383 union wps_event_data data;
1384
1385 os_memset(&data, 0, sizeof(data));
1386
1387 switch (event) {
1388 case HTTP_CLIENT_OK:
1389 wpa_printf(MSG_DEBUG, "WPS ER: SetSelectedRegistrar OK");
1390 data.set_sel_reg.state = WPS_ER_SET_SEL_REG_DONE;
1391 data.set_sel_reg.uuid = ap->uuid;
1392 break;
1393 case HTTP_CLIENT_FAILED:
1394 case HTTP_CLIENT_INVALID_REPLY:
1395 case HTTP_CLIENT_TIMEOUT:
1396 wpa_printf(MSG_DEBUG, "WPS ER: SetSelectedRegistrar failed");
1397 data.set_sel_reg.state = WPS_ER_SET_SEL_REG_FAILED;
1398 data.set_sel_reg.uuid = ap->uuid;
1399 break;
1400 }
1401 http_client_free(ap->http);
1402 ap->http = NULL;
1403
1404 if (data.set_sel_reg.uuid)
1405 ap->er->wps->event_cb(ap->er->wps->cb_ctx,
1406 WPS_EV_ER_SET_SELECTED_REGISTRAR, &data);
1407 }
1408
1409
wps_er_send_set_sel_reg(struct wps_er_ap * ap,struct wpabuf * msg)1410 static void wps_er_send_set_sel_reg(struct wps_er_ap *ap, struct wpabuf *msg)
1411 {
1412 struct wpabuf *buf;
1413 char *len_ptr, *body_ptr;
1414 struct sockaddr_in dst;
1415 char *url, *path;
1416
1417 if (ap->control_url == NULL) {
1418 wpa_printf(MSG_DEBUG, "WPS ER: No controlURL for AP");
1419 return;
1420 }
1421
1422 if (ap->http) {
1423 wpa_printf(MSG_DEBUG, "WPS ER: Pending HTTP request for AP - "
1424 "ignore new request");
1425 return;
1426 }
1427
1428 if (ap->wps) {
1429 wpa_printf(MSG_DEBUG, "WPS ER: Pending WPS operation for AP - "
1430 "skip SetSelectedRegistrar");
1431 return;
1432 }
1433
1434 url = http_client_url_parse(ap->control_url, &dst, &path);
1435 if (url == NULL) {
1436 wpa_printf(MSG_DEBUG, "WPS ER: Failed to parse controlURL");
1437 return;
1438 }
1439
1440 buf = wps_er_soap_hdr(msg, "SetSelectedRegistrar", "NewMessage", path,
1441 &dst, &len_ptr, &body_ptr);
1442 os_free(url);
1443 if (buf == NULL)
1444 return;
1445
1446 wps_er_soap_end(buf, "SetSelectedRegistrar", len_ptr, body_ptr);
1447
1448 ap->http = http_client_addr(&dst, buf, 1000,
1449 wps_er_http_set_sel_reg_cb, ap);
1450 if (ap->http == NULL)
1451 wpabuf_free(buf);
1452 }
1453
1454
wps_er_build_selected_registrar(struct wpabuf * msg,int sel_reg)1455 static int wps_er_build_selected_registrar(struct wpabuf *msg, int sel_reg)
1456 {
1457 wpabuf_put_be16(msg, ATTR_SELECTED_REGISTRAR);
1458 wpabuf_put_be16(msg, 1);
1459 wpabuf_put_u8(msg, !!sel_reg);
1460 return 0;
1461 }
1462
1463
wps_er_build_dev_password_id(struct wpabuf * msg,u16 dev_passwd_id)1464 static int wps_er_build_dev_password_id(struct wpabuf *msg, u16 dev_passwd_id)
1465 {
1466 wpabuf_put_be16(msg, ATTR_DEV_PASSWORD_ID);
1467 wpabuf_put_be16(msg, 2);
1468 wpabuf_put_be16(msg, dev_passwd_id);
1469 return 0;
1470 }
1471
1472
wps_er_build_sel_reg_config_methods(struct wpabuf * msg,u16 sel_reg_config_methods)1473 static int wps_er_build_sel_reg_config_methods(struct wpabuf *msg,
1474 u16 sel_reg_config_methods)
1475 {
1476 wpabuf_put_be16(msg, ATTR_SELECTED_REGISTRAR_CONFIG_METHODS);
1477 wpabuf_put_be16(msg, 2);
1478 wpabuf_put_be16(msg, sel_reg_config_methods);
1479 return 0;
1480 }
1481
1482
wps_er_build_uuid_r(struct wpabuf * msg,const u8 * uuid_r)1483 static int wps_er_build_uuid_r(struct wpabuf *msg, const u8 *uuid_r)
1484 {
1485 #ifdef CONFIG_WPS2
1486 wpabuf_put_be16(msg, ATTR_UUID_R);
1487 wpabuf_put_be16(msg, WPS_UUID_LEN);
1488 wpabuf_put_data(msg, uuid_r, WPS_UUID_LEN);
1489 #endif /* CONFIG_WPS2 */
1490 return 0;
1491 }
1492
1493
wps_er_set_sel_reg(struct wps_er * er,int sel_reg,u16 dev_passwd_id,u16 sel_reg_config_methods)1494 void wps_er_set_sel_reg(struct wps_er *er, int sel_reg, u16 dev_passwd_id,
1495 u16 sel_reg_config_methods)
1496 {
1497 struct wpabuf *msg;
1498 struct wps_er_ap *ap;
1499 struct wps_registrar *reg = er->wps->registrar;
1500 const u8 *auth_macs;
1501 #ifdef CONFIG_WPS2
1502 u8 bcast[ETH_ALEN];
1503 #endif /* CONFIG_WPS2 */
1504 size_t count;
1505 union wps_event_data data;
1506
1507 if (er->skip_set_sel_reg) {
1508 wpa_printf(MSG_DEBUG, "WPS ER: Skip SetSelectedRegistrar");
1509 return;
1510 }
1511
1512 msg = wpabuf_alloc(500);
1513 if (msg == NULL)
1514 return;
1515
1516 auth_macs = wps_authorized_macs(reg, &count);
1517 #ifdef CONFIG_WPS2
1518 if (count == 0) {
1519 os_memset(bcast, 0xff, ETH_ALEN);
1520 auth_macs = bcast;
1521 count = 1;
1522 }
1523 #endif /* CONFIG_WPS2 */
1524
1525 if (wps_build_version(msg) ||
1526 wps_er_build_selected_registrar(msg, sel_reg) ||
1527 wps_er_build_dev_password_id(msg, dev_passwd_id) ||
1528 wps_er_build_sel_reg_config_methods(msg, sel_reg_config_methods) ||
1529 wps_build_wfa_ext(msg, 0, auth_macs, count) ||
1530 wps_er_build_uuid_r(msg, er->wps->uuid)) {
1531 wpabuf_free(msg);
1532 return;
1533 }
1534
1535 os_memset(&data, 0, sizeof(data));
1536 data.set_sel_reg.sel_reg = sel_reg;
1537 data.set_sel_reg.dev_passwd_id = dev_passwd_id;
1538 data.set_sel_reg.sel_reg_config_methods = sel_reg_config_methods;
1539 data.set_sel_reg.state = WPS_ER_SET_SEL_REG_START;
1540
1541 dl_list_for_each(ap, &er->ap, struct wps_er_ap, list) {
1542 if (er->set_sel_reg_uuid_filter &&
1543 os_memcmp(ap->uuid, er->set_sel_reg_uuid_filter,
1544 WPS_UUID_LEN) != 0)
1545 continue;
1546 data.set_sel_reg.uuid = ap->uuid;
1547 er->wps->event_cb(er->wps->cb_ctx,
1548 WPS_EV_ER_SET_SELECTED_REGISTRAR, &data);
1549 wps_er_send_set_sel_reg(ap, msg);
1550 }
1551
1552 wpabuf_free(msg);
1553 }
1554
1555
wps_er_pbc(struct wps_er * er,const u8 * uuid,const u8 * addr)1556 int wps_er_pbc(struct wps_er *er, const u8 *uuid, const u8 *addr)
1557 {
1558 int res;
1559 struct wps_er_ap *ap;
1560
1561 if (er == NULL || er->wps == NULL)
1562 return -1;
1563
1564 if (wps_registrar_pbc_overlap(er->wps->registrar, NULL, NULL)) {
1565 wpa_printf(MSG_DEBUG, "WPS ER: PBC overlap - do not start PBC "
1566 "mode");
1567 return -2;
1568 }
1569
1570 if (uuid)
1571 ap = wps_er_ap_get(er, NULL, uuid, NULL);
1572 else
1573 ap = NULL;
1574 if (ap == NULL) {
1575 struct wps_er_sta *sta = NULL;
1576 dl_list_for_each(ap, &er->ap, struct wps_er_ap, list) {
1577 sta = wps_er_sta_get(ap, addr, uuid);
1578 if (sta) {
1579 uuid = ap->uuid;
1580 break;
1581 }
1582 }
1583 if (sta == NULL)
1584 return -3; /* Unknown UUID */
1585 }
1586
1587 if (ap->ap_settings == NULL) {
1588 wpa_printf(MSG_DEBUG, "WPS ER: AP settings not known");
1589 return -4;
1590 }
1591
1592 er->set_sel_reg_uuid_filter = uuid;
1593 res = wps_registrar_button_pushed(er->wps->registrar, NULL);
1594 er->set_sel_reg_uuid_filter = NULL;
1595 if (res)
1596 return -1;
1597
1598 return 0;
1599 }
1600
1601
wps_er_ap_settings_cb(void * ctx,const struct wps_credential * cred)1602 static void wps_er_ap_settings_cb(void *ctx, const struct wps_credential *cred)
1603 {
1604 struct wps_er_ap *ap = ctx;
1605 union wps_event_data data;
1606
1607 wpa_printf(MSG_DEBUG, "WPS ER: AP Settings received");
1608 os_free(ap->ap_settings);
1609 ap->ap_settings = os_malloc(sizeof(*cred));
1610 if (ap->ap_settings) {
1611 os_memcpy(ap->ap_settings, cred, sizeof(*cred));
1612 ap->ap_settings->cred_attr = NULL;
1613 }
1614
1615 os_memset(&data, 0, sizeof(data));
1616 data.ap_settings.uuid = ap->uuid;
1617 data.ap_settings.cred = cred;
1618 ap->er->wps->event_cb(ap->er->wps->cb_ctx, WPS_EV_ER_AP_SETTINGS,
1619 &data);
1620 }
1621
1622
wps_er_get_sta_uuid(struct wps_er * er,const u8 * addr)1623 const u8 * wps_er_get_sta_uuid(struct wps_er *er, const u8 *addr)
1624 {
1625 struct wps_er_ap *ap;
1626 dl_list_for_each(ap, &er->ap, struct wps_er_ap, list) {
1627 struct wps_er_sta *sta;
1628 sta = wps_er_sta_get(ap, addr, NULL);
1629 if (sta)
1630 return sta->uuid;
1631 }
1632 return NULL;
1633 }
1634
1635
wps_er_http_put_message_cb(void * ctx,struct http_client * c,enum http_client_event event)1636 static void wps_er_http_put_message_cb(void *ctx, struct http_client *c,
1637 enum http_client_event event)
1638 {
1639 struct wps_er_ap *ap = ctx;
1640 struct wpabuf *reply;
1641 char *msg = NULL;
1642
1643 switch (event) {
1644 case HTTP_CLIENT_OK:
1645 wpa_printf(MSG_DEBUG, "WPS ER: PutMessage OK");
1646 reply = http_client_get_body(c);
1647 if (reply == NULL)
1648 break;
1649 msg = os_zalloc(wpabuf_len(reply) + 1);
1650 if (msg == NULL)
1651 break;
1652 os_memcpy(msg, wpabuf_head(reply), wpabuf_len(reply));
1653 break;
1654 case HTTP_CLIENT_FAILED:
1655 case HTTP_CLIENT_INVALID_REPLY:
1656 case HTTP_CLIENT_TIMEOUT:
1657 wpa_printf(MSG_DEBUG, "WPS ER: PutMessage failed");
1658 if (ap->wps) {
1659 wps_deinit(ap->wps);
1660 ap->wps = NULL;
1661 }
1662 break;
1663 }
1664 http_client_free(ap->http);
1665 ap->http = NULL;
1666
1667 if (msg) {
1668 struct wpabuf *buf;
1669 enum http_reply_code ret;
1670 buf = xml_get_base64_item(msg, "NewOutMessage", &ret);
1671 os_free(msg);
1672 if (buf == NULL) {
1673 wpa_printf(MSG_DEBUG, "WPS ER: Could not extract "
1674 "NewOutMessage from PutMessage response");
1675 wps_deinit(ap->wps);
1676 ap->wps = NULL;
1677 return;
1678 }
1679 wps_er_ap_process(ap, buf);
1680 wpabuf_free(buf);
1681 }
1682 }
1683
1684
wps_er_ap_put_message(struct wps_er_ap * ap,const struct wpabuf * msg)1685 static void wps_er_ap_put_message(struct wps_er_ap *ap,
1686 const struct wpabuf *msg)
1687 {
1688 struct wpabuf *buf;
1689 char *len_ptr, *body_ptr;
1690 struct sockaddr_in dst;
1691 char *url, *path;
1692
1693 if (ap->http) {
1694 wpa_printf(MSG_DEBUG, "WPS ER: Pending HTTP operation ongoing "
1695 "with the AP - cannot continue learn");
1696 return;
1697 }
1698
1699 if (ap->control_url == NULL) {
1700 wpa_printf(MSG_DEBUG, "WPS ER: No controlURL for AP");
1701 return;
1702 }
1703
1704 url = http_client_url_parse(ap->control_url, &dst, &path);
1705 if (url == NULL) {
1706 wpa_printf(MSG_DEBUG, "WPS ER: Failed to parse controlURL");
1707 return;
1708 }
1709
1710 buf = wps_er_soap_hdr(msg, "PutMessage", "NewInMessage", path, &dst,
1711 &len_ptr, &body_ptr);
1712 os_free(url);
1713 if (buf == NULL)
1714 return;
1715
1716 wps_er_soap_end(buf, "PutMessage", len_ptr, body_ptr);
1717
1718 ap->http = http_client_addr(&dst, buf, 10000,
1719 wps_er_http_put_message_cb, ap);
1720 if (ap->http == NULL)
1721 wpabuf_free(buf);
1722 }
1723
1724
wps_er_ap_process(struct wps_er_ap * ap,struct wpabuf * msg)1725 static void wps_er_ap_process(struct wps_er_ap *ap, struct wpabuf *msg)
1726 {
1727 enum wps_process_res res;
1728 struct wps_parse_attr attr;
1729 enum wsc_op_code op_code;
1730
1731 op_code = WSC_MSG;
1732 if (wps_parse_msg(msg, &attr) == 0 && attr.msg_type) {
1733 switch (*attr.msg_type) {
1734 case WPS_WSC_ACK:
1735 op_code = WSC_ACK;
1736 break;
1737 case WPS_WSC_NACK:
1738 op_code = WSC_NACK;
1739 break;
1740 case WPS_WSC_DONE:
1741 op_code = WSC_Done;
1742 break;
1743 }
1744 }
1745
1746 res = wps_process_msg(ap->wps, op_code, msg);
1747 if (res == WPS_CONTINUE) {
1748 struct wpabuf *next = wps_get_msg(ap->wps, &op_code);
1749 if (next) {
1750 wps_er_ap_put_message(ap, next);
1751 wpabuf_free(next);
1752 } else {
1753 wpa_printf(MSG_DEBUG, "WPS ER: Failed to build "
1754 "message");
1755 wps_deinit(ap->wps);
1756 ap->wps = NULL;
1757 }
1758 } else if (res == WPS_DONE) {
1759 wpa_printf(MSG_DEBUG, "WPS ER: Protocol run done");
1760 wps_deinit(ap->wps);
1761 ap->wps = NULL;
1762 } else {
1763 wpa_printf(MSG_DEBUG, "WPS ER: Failed to process message from "
1764 "AP (res=%d)", res);
1765 wps_deinit(ap->wps);
1766 ap->wps = NULL;
1767 }
1768 }
1769
1770
wps_er_ap_learn_m1(struct wps_er_ap * ap,struct wpabuf * m1)1771 static void wps_er_ap_learn_m1(struct wps_er_ap *ap, struct wpabuf *m1)
1772 {
1773 struct wps_config cfg;
1774
1775 if (ap->wps) {
1776 wpa_printf(MSG_DEBUG, "WPS ER: Protocol run already in "
1777 "progress with this AP");
1778 return;
1779 }
1780
1781 os_memset(&cfg, 0, sizeof(cfg));
1782 cfg.wps = ap->er->wps;
1783 cfg.registrar = 1;
1784 ap->wps = wps_init(&cfg);
1785 if (ap->wps == NULL)
1786 return;
1787 ap->wps->ap_settings_cb = wps_er_ap_settings_cb;
1788 ap->wps->ap_settings_cb_ctx = ap;
1789
1790 wps_er_ap_process(ap, m1);
1791 }
1792
1793
wps_er_ap_learn(struct wps_er_ap * ap,const char * dev_info)1794 static void wps_er_ap_learn(struct wps_er_ap *ap, const char *dev_info)
1795 {
1796 struct wpabuf *info;
1797 enum http_reply_code ret;
1798
1799 wpa_printf(MSG_DEBUG, "WPS ER: Received GetDeviceInfo response (M1) "
1800 "from the AP");
1801 info = xml_get_base64_item(dev_info, "NewDeviceInfo", &ret);
1802 if (info == NULL) {
1803 wpa_printf(MSG_DEBUG, "WPS ER: Could not extract "
1804 "NewDeviceInfo from GetDeviceInfo response");
1805 return;
1806 }
1807
1808 ap->m1_handler(ap, info);
1809 wpabuf_free(info);
1810 }
1811
1812
wps_er_http_get_dev_info_cb(void * ctx,struct http_client * c,enum http_client_event event)1813 static void wps_er_http_get_dev_info_cb(void *ctx, struct http_client *c,
1814 enum http_client_event event)
1815 {
1816 struct wps_er_ap *ap = ctx;
1817 struct wpabuf *reply;
1818 char *dev_info = NULL;
1819
1820 switch (event) {
1821 case HTTP_CLIENT_OK:
1822 wpa_printf(MSG_DEBUG, "WPS ER: GetDeviceInfo OK");
1823 reply = http_client_get_body(c);
1824 if (reply == NULL)
1825 break;
1826 dev_info = os_zalloc(wpabuf_len(reply) + 1);
1827 if (dev_info == NULL)
1828 break;
1829 os_memcpy(dev_info, wpabuf_head(reply), wpabuf_len(reply));
1830 break;
1831 case HTTP_CLIENT_FAILED:
1832 case HTTP_CLIENT_INVALID_REPLY:
1833 case HTTP_CLIENT_TIMEOUT:
1834 wpa_printf(MSG_DEBUG, "WPS ER: GetDeviceInfo failed");
1835 break;
1836 }
1837 http_client_free(ap->http);
1838 ap->http = NULL;
1839
1840 if (dev_info) {
1841 wps_er_ap_learn(ap, dev_info);
1842 os_free(dev_info);
1843 }
1844 }
1845
1846
wps_er_send_get_device_info(struct wps_er_ap * ap,void (* m1_handler)(struct wps_er_ap * ap,struct wpabuf * m1))1847 static int wps_er_send_get_device_info(struct wps_er_ap *ap,
1848 void (*m1_handler)(struct wps_er_ap *ap,
1849 struct wpabuf *m1))
1850 {
1851 struct wpabuf *buf;
1852 char *len_ptr, *body_ptr;
1853 struct sockaddr_in dst;
1854 char *url, *path;
1855
1856 if (ap->http) {
1857 wpa_printf(MSG_DEBUG, "WPS ER: Pending HTTP operation ongoing "
1858 "with the AP - cannot get device info");
1859 return -1;
1860 }
1861
1862 if (ap->control_url == NULL) {
1863 wpa_printf(MSG_DEBUG, "WPS ER: No controlURL for AP");
1864 return -1;
1865 }
1866
1867 url = http_client_url_parse(ap->control_url, &dst, &path);
1868 if (url == NULL) {
1869 wpa_printf(MSG_DEBUG, "WPS ER: Failed to parse controlURL");
1870 return -1;
1871 }
1872
1873 buf = wps_er_soap_hdr(NULL, "GetDeviceInfo", NULL, path, &dst,
1874 &len_ptr, &body_ptr);
1875 os_free(url);
1876 if (buf == NULL)
1877 return -1;
1878
1879 wps_er_soap_end(buf, "GetDeviceInfo", len_ptr, body_ptr);
1880
1881 ap->http = http_client_addr(&dst, buf, 10000,
1882 wps_er_http_get_dev_info_cb, ap);
1883 if (ap->http == NULL) {
1884 wpabuf_free(buf);
1885 return -1;
1886 }
1887
1888 ap->m1_handler = m1_handler;
1889
1890 return 0;
1891 }
1892
1893
wps_er_learn(struct wps_er * er,const u8 * uuid,const u8 * addr,const u8 * pin,size_t pin_len)1894 int wps_er_learn(struct wps_er *er, const u8 *uuid, const u8 *addr,
1895 const u8 *pin, size_t pin_len)
1896 {
1897 struct wps_er_ap *ap;
1898
1899 if (er == NULL)
1900 return -1;
1901
1902 ap = wps_er_ap_get(er, NULL, uuid, addr);
1903 if (ap == NULL) {
1904 wpa_printf(MSG_DEBUG, "WPS ER: AP not found for learn "
1905 "request");
1906 return -1;
1907 }
1908 if (uuid == NULL)
1909 uuid = ap->uuid;
1910 if (ap->wps) {
1911 wpa_printf(MSG_DEBUG, "WPS ER: Pending operation ongoing "
1912 "with the AP - cannot start learn");
1913 return -1;
1914 }
1915
1916 if (wps_er_send_get_device_info(ap, wps_er_ap_learn_m1) < 0)
1917 return -1;
1918
1919 er->skip_set_sel_reg = 1;
1920 wps_registrar_add_pin(er->wps->registrar, NULL, uuid, pin, pin_len, 0);
1921 er->skip_set_sel_reg = 0;
1922
1923 return 0;
1924 }
1925
1926
wps_er_set_config(struct wps_er * er,const u8 * uuid,const u8 * addr,const struct wps_credential * cred)1927 int wps_er_set_config(struct wps_er *er, const u8 *uuid, const u8 *addr,
1928 const struct wps_credential *cred)
1929 {
1930 struct wps_er_ap *ap;
1931
1932 if (er == NULL)
1933 return -1;
1934
1935 ap = wps_er_ap_get(er, NULL, uuid, addr);
1936 if (ap == NULL) {
1937 wpa_printf(MSG_DEBUG, "WPS ER: AP not found for set config "
1938 "request");
1939 return -1;
1940 }
1941
1942 os_free(ap->ap_settings);
1943 ap->ap_settings = os_malloc(sizeof(*cred));
1944 if (ap->ap_settings == NULL)
1945 return -1;
1946 os_memcpy(ap->ap_settings, cred, sizeof(*cred));
1947 ap->ap_settings->cred_attr = NULL;
1948 wpa_printf(MSG_DEBUG, "WPS ER: Updated local AP settings based set "
1949 "config request");
1950
1951 return 0;
1952 }
1953
1954
wps_er_ap_config_m1(struct wps_er_ap * ap,struct wpabuf * m1)1955 static void wps_er_ap_config_m1(struct wps_er_ap *ap, struct wpabuf *m1)
1956 {
1957 struct wps_config cfg;
1958
1959 if (ap->wps) {
1960 wpa_printf(MSG_DEBUG, "WPS ER: Protocol run already in "
1961 "progress with this AP");
1962 return;
1963 }
1964
1965 os_memset(&cfg, 0, sizeof(cfg));
1966 cfg.wps = ap->er->wps;
1967 cfg.registrar = 1;
1968 cfg.new_ap_settings = ap->ap_settings;
1969 ap->wps = wps_init(&cfg);
1970 if (ap->wps == NULL)
1971 return;
1972 ap->wps->ap_settings_cb = NULL;
1973 ap->wps->ap_settings_cb_ctx = NULL;
1974
1975 wps_er_ap_process(ap, m1);
1976 }
1977
1978
wps_er_config(struct wps_er * er,const u8 * uuid,const u8 * addr,const u8 * pin,size_t pin_len,const struct wps_credential * cred)1979 int wps_er_config(struct wps_er *er, const u8 *uuid, const u8 *addr,
1980 const u8 *pin, size_t pin_len,
1981 const struct wps_credential *cred)
1982 {
1983 struct wps_er_ap *ap;
1984
1985 if (er == NULL)
1986 return -1;
1987
1988 ap = wps_er_ap_get(er, NULL, uuid, addr);
1989 if (ap == NULL) {
1990 wpa_printf(MSG_DEBUG, "WPS ER: AP not found for config "
1991 "request");
1992 return -1;
1993 }
1994 if (uuid == NULL)
1995 uuid = ap->uuid;
1996 if (ap->wps) {
1997 wpa_printf(MSG_DEBUG, "WPS ER: Pending operation ongoing "
1998 "with the AP - cannot start config");
1999 return -1;
2000 }
2001
2002 os_free(ap->ap_settings);
2003 ap->ap_settings = os_malloc(sizeof(*cred));
2004 if (ap->ap_settings == NULL)
2005 return -1;
2006 os_memcpy(ap->ap_settings, cred, sizeof(*cred));
2007 ap->ap_settings->cred_attr = NULL;
2008
2009 if (wps_er_send_get_device_info(ap, wps_er_ap_config_m1) < 0)
2010 return -1;
2011
2012 er->skip_set_sel_reg = 1;
2013 wps_registrar_add_pin(er->wps->registrar, NULL, uuid, pin, pin_len, 0);
2014 er->skip_set_sel_reg = 0;
2015
2016 return 0;
2017 }
2018
2019
2020 #ifdef CONFIG_WPS_NFC
2021
wps_er_config_token_from_cred(struct wps_context * wps,struct wps_credential * cred)2022 struct wpabuf * wps_er_config_token_from_cred(struct wps_context *wps,
2023 struct wps_credential *cred)
2024 {
2025 struct wpabuf *ret;
2026 struct wps_data data;
2027
2028 ret = wpabuf_alloc(500);
2029 if (ret == NULL)
2030 return NULL;
2031
2032 os_memset(&data, 0, sizeof(data));
2033 data.wps = wps;
2034 data.use_cred = cred;
2035 if (wps_build_version(ret) ||
2036 wps_build_cred(&data, ret) ||
2037 wps_build_wfa_ext(ret, 0, NULL, 0)) {
2038 wpabuf_free(ret);
2039 return NULL;
2040 }
2041
2042 return ret;
2043 }
2044
2045
wps_er_nfc_config_token(struct wps_er * er,const u8 * uuid,const u8 * addr)2046 struct wpabuf * wps_er_nfc_config_token(struct wps_er *er, const u8 *uuid,
2047 const u8 *addr)
2048 {
2049 struct wps_er_ap *ap;
2050
2051 if (er == NULL)
2052 return NULL;
2053
2054 ap = wps_er_ap_get(er, NULL, uuid, addr);
2055 if (ap == NULL)
2056 return NULL;
2057 if (ap->ap_settings == NULL) {
2058 wpa_printf(MSG_DEBUG, "WPS ER: No settings known for the "
2059 "selected AP");
2060 return NULL;
2061 }
2062
2063 return wps_er_config_token_from_cred(er->wps, ap->ap_settings);
2064 }
2065
2066 #endif /* CONFIG_WPS_NFC */
2067