2 * Wi-Fi Protected Setup - External Registrar
3 * Copyright (c) 2009, Jouni Malinen <j@w1.fi>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
9 * Alternatively, this software may be distributed under the terms of BSD
12 * See README and COPYING for more details.
22 #include "http_client.h"
23 #include "http_server.h"
27 #include "wps_upnp_i.h"
31 static void wps_er_deinit_finish(void *eloop_data, void *user_ctx);
32 static void wps_er_ap_timeout(void *eloop_data, void *user_ctx);
33 static void wps_er_sta_timeout(void *eloop_data, void *user_ctx);
34 static void wps_er_ap_process(struct wps_er_ap *ap, struct wpabuf *msg);
35 static int wps_er_send_get_device_info(struct wps_er_ap *ap,
36 void (*m1_handler)(struct wps_er_ap *ap,
40 static void wps_er_sta_event(struct wps_context *wps, struct wps_er_sta *sta,
43 union wps_event_data data;
44 struct wps_event_er_enrollee *ev = &data.enrollee;
46 if (wps->event_cb == NULL)
49 os_memset(&data, 0, sizeof(data));
51 ev->mac_addr = sta->addr;
52 ev->m1_received = sta->m1_received;
53 ev->config_methods = sta->config_methods;
54 ev->dev_passwd_id = sta->dev_passwd_id;
55 ev->pri_dev_type = sta->pri_dev_type;
56 ev->dev_name = sta->dev_name;
57 ev->manufacturer = sta->manufacturer;
58 ev->model_name = sta->model_name;
59 ev->model_number = sta->model_number;
60 ev->serial_number = sta->serial_number;
61 wps->event_cb(wps->cb_ctx, event, &data);
65 static struct wps_er_sta * wps_er_sta_get(struct wps_er_ap *ap, const u8 *addr)
67 struct wps_er_sta *sta;
68 dl_list_for_each(sta, &ap->sta, struct wps_er_sta, list) {
69 if (os_memcmp(sta->addr, addr, ETH_ALEN) == 0)
76 static void wps_er_sta_free(struct wps_er_sta *sta)
78 wps_er_sta_event(sta->ap->er->wps, sta, WPS_EV_ER_ENROLLEE_REMOVE);
81 os_free(sta->manufacturer);
82 os_free(sta->model_name);
83 os_free(sta->model_number);
84 os_free(sta->serial_number);
85 os_free(sta->dev_name);
86 http_client_free(sta->http);
87 eloop_cancel_timeout(wps_er_sta_timeout, sta, NULL);
93 static void wps_er_sta_remove_all(struct wps_er_ap *ap)
95 struct wps_er_sta *prev, *sta;
96 dl_list_for_each_safe(sta, prev, &ap->sta, struct wps_er_sta, list)
101 static struct wps_er_ap * wps_er_ap_get(struct wps_er *er,
102 struct in_addr *addr, const u8 *uuid)
104 struct wps_er_ap *ap;
105 dl_list_for_each(ap, &er->ap, struct wps_er_ap, list) {
106 if ((addr == NULL || ap->addr.s_addr == addr->s_addr) &&
108 os_memcmp(uuid, ap->uuid, WPS_UUID_LEN) == 0))
115 static struct wps_er_ap * wps_er_ap_get_id(struct wps_er *er, unsigned int id)
117 struct wps_er_ap *ap;
118 dl_list_for_each(ap, &er->ap, struct wps_er_ap, list) {
126 static void wps_er_ap_event(struct wps_context *wps, struct wps_er_ap *ap,
127 enum wps_event event)
129 union wps_event_data data;
130 struct wps_event_er_ap *evap = &data.ap;
132 if (wps->event_cb == NULL)
135 os_memset(&data, 0, sizeof(data));
136 evap->uuid = ap->uuid;
137 evap->friendly_name = ap->friendly_name;
138 evap->manufacturer = ap->manufacturer;
139 evap->manufacturer_url = ap->manufacturer_url;
140 evap->model_description = ap->model_description;
141 evap->model_name = ap->model_name;
142 evap->model_number = ap->model_number;
143 evap->model_url = ap->model_url;
144 evap->serial_number = ap->serial_number;
146 evap->pri_dev_type = ap->pri_dev_type;
147 evap->wps_state = ap->wps_state;
148 evap->mac_addr = ap->mac_addr;
149 wps->event_cb(wps->cb_ctx, event, &data);
153 static void wps_er_ap_free(struct wps_er_ap *ap)
155 http_client_free(ap->http);
158 os_free(ap->location);
159 os_free(ap->friendly_name);
160 os_free(ap->manufacturer);
161 os_free(ap->manufacturer_url);
162 os_free(ap->model_description);
163 os_free(ap->model_name);
164 os_free(ap->model_number);
165 os_free(ap->model_url);
166 os_free(ap->serial_number);
170 os_free(ap->scpd_url);
171 os_free(ap->control_url);
172 os_free(ap->event_sub_url);
174 os_free(ap->ap_settings);
180 static void wps_er_ap_unsubscribed(struct wps_er *er, struct wps_er_ap *ap)
182 wpa_printf(MSG_DEBUG, "WPS ER: Unsubscribed from AP %s (%s)",
183 inet_ntoa(ap->addr), ap->location);
184 dl_list_del(&ap->list);
187 if (er->deinitializing && dl_list_empty(&er->ap_unsubscribing)) {
188 eloop_cancel_timeout(wps_er_deinit_finish, er, NULL);
189 wps_er_deinit_finish(er, NULL);
194 static void wps_er_http_unsubscribe_cb(void *ctx, struct http_client *c,
195 enum http_client_event event)
197 struct wps_er_ap *ap = ctx;
201 wpa_printf(MSG_DEBUG, "WPS ER: Unsubscribed from events");
204 case HTTP_CLIENT_FAILED:
205 case HTTP_CLIENT_INVALID_REPLY:
206 case HTTP_CLIENT_TIMEOUT:
207 wpa_printf(MSG_DEBUG, "WPS ER: Failed to unsubscribe from "
211 http_client_free(ap->http);
215 * Need to get rid of the AP entry regardless of whether we managed to
216 * unsubscribe cleanly or not.
218 wps_er_ap_unsubscribed(ap->er, ap);
222 static void wps_er_ap_unsubscribe(struct wps_er *er, struct wps_er_ap *ap)
225 struct sockaddr_in dst;
229 if (ap->event_sub_url == NULL) {
230 wpa_printf(MSG_DEBUG, "WPS ER: No eventSubURL - cannot "
235 wpa_printf(MSG_DEBUG, "WPS ER: Pending HTTP request - cannot "
236 "send subscribe request");
240 url = http_client_url_parse(ap->event_sub_url, &dst, &path);
242 wpa_printf(MSG_DEBUG, "WPS ER: Failed to parse eventSubURL");
246 req = wpabuf_alloc(os_strlen(ap->event_sub_url) + 1000);
251 uuid_bin2str(ap->sid, sid, sizeof(sid));
253 "UNSUBSCRIBE %s HTTP/1.1\r\n"
257 path, inet_ntoa(dst.sin_addr), ntohs(dst.sin_port), sid);
259 wpa_hexdump_ascii(MSG_MSGDUMP, "WPS ER: Unsubscription request",
260 wpabuf_head(req), wpabuf_len(req));
262 ap->http = http_client_addr(&dst, req, 1000,
263 wps_er_http_unsubscribe_cb, ap);
264 if (ap->http == NULL) {
272 * Need to get rid of the AP entry even when we fail to unsubscribe
275 wps_er_ap_unsubscribed(ap->er, ap);
278 static void wps_er_ap_remove_entry(struct wps_er *er, struct wps_er_ap *ap)
280 wpa_printf(MSG_DEBUG, "WPS ER: Removing AP entry for %s (%s)",
281 inet_ntoa(ap->addr), ap->location);
282 eloop_cancel_timeout(wps_er_ap_timeout, er, ap);
283 wps_er_sta_remove_all(ap);
284 wps_er_ap_event(er->wps, ap, WPS_EV_ER_AP_REMOVE);
285 http_client_free(ap->http);
292 dl_list_del(&ap->list);
293 if (ap->subscribed) {
294 dl_list_add(&er->ap_unsubscribing, &ap->list);
295 wps_er_ap_unsubscribe(er, ap);
301 static void wps_er_ap_timeout(void *eloop_data, void *user_ctx)
303 struct wps_er *er = eloop_data;
304 struct wps_er_ap *ap = user_ctx;
305 wpa_printf(MSG_DEBUG, "WPS ER: AP advertisement timed out");
306 wps_er_ap_remove_entry(er, ap);
310 static int wps_er_get_sid(struct wps_er_ap *ap, char *sid)
316 wpa_printf(MSG_DEBUG, "WPS ER: No SID received from %s (%s)",
317 inet_ntoa(ap->addr), ap->location);
321 pos = os_strstr(sid, "uuid:");
323 wpa_printf(MSG_DEBUG, "WPS ER: Invalid SID received from "
324 "%s (%s): '%s'", inet_ntoa(ap->addr), ap->location,
330 if (uuid_str2bin(pos, ap->sid) < 0) {
331 wpa_printf(MSG_DEBUG, "WPS ER: Invalid SID received from "
332 "%s (%s): '%s'", inet_ntoa(ap->addr), ap->location,
337 uuid_bin2str(ap->sid, txt, sizeof(txt));
338 wpa_printf(MSG_DEBUG, "WPS ER: SID for subscription with %s (%s): %s",
339 inet_ntoa(ap->addr), ap->location, txt);
345 static void wps_er_http_subscribe_cb(void *ctx, struct http_client *c,
346 enum http_client_event event)
348 struct wps_er_ap *ap = ctx;
352 wpa_printf(MSG_DEBUG, "WPS ER: Subscribed to events");
354 wps_er_get_sid(ap, http_client_get_hdr_line(c, "SID"));
355 wps_er_ap_event(ap->er->wps, ap, WPS_EV_ER_AP_ADD);
357 case HTTP_CLIENT_FAILED:
358 case HTTP_CLIENT_INVALID_REPLY:
359 case HTTP_CLIENT_TIMEOUT:
360 wpa_printf(MSG_DEBUG, "WPS ER: Failed to subscribe to events");
363 http_client_free(ap->http);
368 static void wps_er_subscribe(struct wps_er_ap *ap)
371 struct sockaddr_in dst;
374 if (ap->event_sub_url == NULL) {
375 wpa_printf(MSG_DEBUG, "WPS ER: No eventSubURL - cannot "
380 wpa_printf(MSG_DEBUG, "WPS ER: Pending HTTP request - cannot "
381 "send subscribe request");
385 url = http_client_url_parse(ap->event_sub_url, &dst, &path);
387 wpa_printf(MSG_DEBUG, "WPS ER: Failed to parse eventSubURL");
391 req = wpabuf_alloc(os_strlen(ap->event_sub_url) + 1000);
397 "SUBSCRIBE %s HTTP/1.1\r\n"
399 "CALLBACK: <http://%s:%d/event/%u/%u>\r\n"
401 "TIMEOUT: Second-%d\r\n"
403 path, inet_ntoa(dst.sin_addr), ntohs(dst.sin_port),
404 ap->er->ip_addr_text, ap->er->http_port,
405 ap->er->event_id, ap->id, 1800);
407 wpa_hexdump_ascii(MSG_MSGDUMP, "WPS ER: Subscription request",
408 wpabuf_head(req), wpabuf_len(req));
410 ap->http = http_client_addr(&dst, req, 1000, wps_er_http_subscribe_cb,
412 if (ap->http == NULL)
417 static void wps_er_ap_get_m1(struct wps_er_ap *ap, struct wpabuf *m1)
419 struct wps_parse_attr attr;
421 if (wps_parse_msg(m1, &attr) < 0) {
422 wpa_printf(MSG_DEBUG, "WPS ER: Failed to parse M1");
425 if (attr.primary_dev_type)
426 os_memcpy(ap->pri_dev_type, attr.primary_dev_type, 8);
428 ap->wps_state = *attr.wps_state;
430 os_memcpy(ap->mac_addr, attr.mac_addr, ETH_ALEN);
432 wps_er_subscribe(ap);
436 static void wps_er_get_device_info(struct wps_er_ap *ap)
438 wps_er_send_get_device_info(ap, wps_er_ap_get_m1);
442 static void wps_er_parse_device_description(struct wps_er_ap *ap,
443 struct wpabuf *reply)
445 /* Note: reply includes null termination after the buffer data */
446 const char *data = wpabuf_head(reply);
449 wpa_hexdump_ascii(MSG_MSGDUMP, "WPS ER: Device info",
450 wpabuf_head(reply), wpabuf_len(reply));
452 ap->friendly_name = xml_get_first_item(data, "friendlyName");
453 wpa_printf(MSG_DEBUG, "WPS ER: friendlyName='%s'", ap->friendly_name);
455 ap->manufacturer = xml_get_first_item(data, "manufacturer");
456 wpa_printf(MSG_DEBUG, "WPS ER: manufacturer='%s'", ap->manufacturer);
458 ap->manufacturer_url = xml_get_first_item(data, "manufacturerURL");
459 wpa_printf(MSG_DEBUG, "WPS ER: manufacturerURL='%s'",
460 ap->manufacturer_url);
462 ap->model_description = xml_get_first_item(data, "modelDescription");
463 wpa_printf(MSG_DEBUG, "WPS ER: modelDescription='%s'",
464 ap->model_description);
466 ap->model_name = xml_get_first_item(data, "modelName");
467 wpa_printf(MSG_DEBUG, "WPS ER: modelName='%s'", ap->model_name);
469 ap->model_number = xml_get_first_item(data, "modelNumber");
470 wpa_printf(MSG_DEBUG, "WPS ER: modelNumber='%s'", ap->model_number);
472 ap->model_url = xml_get_first_item(data, "modelURL");
473 wpa_printf(MSG_DEBUG, "WPS ER: modelURL='%s'", ap->model_url);
475 ap->serial_number = xml_get_first_item(data, "serialNumber");
476 wpa_printf(MSG_DEBUG, "WPS ER: serialNumber='%s'", ap->serial_number);
478 ap->udn = xml_get_first_item(data, "UDN");
479 wpa_printf(MSG_DEBUG, "WPS ER: UDN='%s'", ap->udn);
480 pos = os_strstr(ap->udn, "uuid:");
483 if (uuid_str2bin(pos, ap->uuid) < 0)
484 wpa_printf(MSG_DEBUG, "WPS ER: Invalid UUID in UDN");
487 ap->upc = xml_get_first_item(data, "UPC");
488 wpa_printf(MSG_DEBUG, "WPS ER: UPC='%s'", ap->upc);
490 ap->scpd_url = http_link_update(
491 xml_get_first_item(data, "SCPDURL"), ap->location);
492 wpa_printf(MSG_DEBUG, "WPS ER: SCPDURL='%s'", ap->scpd_url);
494 ap->control_url = http_link_update(
495 xml_get_first_item(data, "controlURL"), ap->location);
496 wpa_printf(MSG_DEBUG, "WPS ER: controlURL='%s'", ap->control_url);
498 ap->event_sub_url = http_link_update(
499 xml_get_first_item(data, "eventSubURL"), ap->location);
500 wpa_printf(MSG_DEBUG, "WPS ER: eventSubURL='%s'", ap->event_sub_url);
504 static void wps_er_http_dev_desc_cb(void *ctx, struct http_client *c,
505 enum http_client_event event)
507 struct wps_er_ap *ap = ctx;
508 struct wpabuf *reply;
513 reply = http_client_get_body(c);
516 wps_er_parse_device_description(ap, reply);
519 case HTTP_CLIENT_FAILED:
520 case HTTP_CLIENT_INVALID_REPLY:
521 case HTTP_CLIENT_TIMEOUT:
522 wpa_printf(MSG_DEBUG, "WPS ER: Failed to fetch device info");
525 http_client_free(ap->http);
528 wps_er_get_device_info(ap);
532 void wps_er_ap_add(struct wps_er *er, const u8 *uuid, struct in_addr *addr,
533 const char *location, int max_age)
535 struct wps_er_ap *ap;
537 ap = wps_er_ap_get(er, addr, uuid);
539 /* Update advertisement timeout */
540 eloop_cancel_timeout(wps_er_ap_timeout, er, ap);
541 eloop_register_timeout(max_age, 0, wps_er_ap_timeout, er, ap);
545 ap = os_zalloc(sizeof(*ap));
548 dl_list_init(&ap->sta);
550 ap->id = ++er->next_ap_id;
551 ap->location = os_strdup(location);
552 if (ap->location == NULL) {
556 dl_list_add(&er->ap, &ap->list);
558 ap->addr.s_addr = addr->s_addr;
559 os_memcpy(ap->uuid, uuid, WPS_UUID_LEN);
560 eloop_register_timeout(max_age, 0, wps_er_ap_timeout, er, ap);
562 wpa_printf(MSG_DEBUG, "WPS ER: Added AP entry for %s (%s)",
563 inet_ntoa(ap->addr), ap->location);
565 /* Fetch device description */
566 ap->http = http_client_url(ap->location, NULL, 10000,
567 wps_er_http_dev_desc_cb, ap);
571 void wps_er_ap_remove(struct wps_er *er, struct in_addr *addr)
573 struct wps_er_ap *ap;
574 dl_list_for_each(ap, &er->ap, struct wps_er_ap, list) {
575 if (ap->addr.s_addr == addr->s_addr) {
576 wps_er_ap_remove_entry(er, ap);
583 static void wps_er_ap_remove_all(struct wps_er *er)
585 struct wps_er_ap *prev, *ap;
586 dl_list_for_each_safe(ap, prev, &er->ap, struct wps_er_ap, list)
587 wps_er_ap_remove_entry(er, ap);
591 static void http_put_date(struct wpabuf *buf)
593 wpabuf_put_str(buf, "Date: ");
595 wpabuf_put_str(buf, "\r\n");
599 static void wps_er_http_resp_not_found(struct http_request *req)
602 buf = wpabuf_alloc(200);
604 http_request_deinit(req);
609 "HTTP/1.1 404 Not Found\r\n"
610 "Server: unspecified, UPnP/1.0, unspecified\r\n"
611 "Connection: close\r\n");
613 wpabuf_put_str(buf, "\r\n");
614 http_request_send_and_deinit(req, buf);
618 static void wps_er_http_resp_ok(struct http_request *req)
621 buf = wpabuf_alloc(200);
623 http_request_deinit(req);
628 "HTTP/1.1 200 OK\r\n"
629 "Server: unspecified, UPnP/1.0, unspecified\r\n"
630 "Connection: close\r\n"
631 "Content-Length: 0\r\n");
633 wpabuf_put_str(buf, "\r\n");
634 http_request_send_and_deinit(req, buf);
638 static void wps_er_sta_timeout(void *eloop_data, void *user_ctx)
640 struct wps_er_sta *sta = eloop_data;
641 wpa_printf(MSG_DEBUG, "WPS ER: STA entry timed out");
642 dl_list_del(&sta->list);
643 wps_er_sta_free(sta);
647 static struct wps_er_sta * wps_er_add_sta_data(struct wps_er_ap *ap,
649 struct wps_parse_attr *attr,
652 struct wps_er_sta *sta = wps_er_sta_get(ap, addr);
656 m1 = !probe_req && attr->msg_type && *attr->msg_type == WPS_M1;
660 * Only allow new STA entry to be added based on Probe Request
661 * or M1. This will filter out bogus events and anything that
662 * may have been ongoing at the time ER subscribed for events.
664 if (!probe_req && !m1)
667 sta = os_zalloc(sizeof(*sta));
670 os_memcpy(sta->addr, addr, ETH_ALEN);
672 dl_list_add(&ap->sta, &sta->list);
677 sta->m1_received = 1;
679 if (attr->config_methods && (!probe_req || !sta->m1_received))
680 sta->config_methods = WPA_GET_BE16(attr->config_methods);
681 if (attr->uuid_e && (!probe_req || !sta->m1_received))
682 os_memcpy(sta->uuid, attr->uuid_e, WPS_UUID_LEN);
683 if (attr->primary_dev_type && (!probe_req || !sta->m1_received))
684 os_memcpy(sta->pri_dev_type, attr->primary_dev_type, 8);
685 if (attr->dev_password_id && (!probe_req || !sta->m1_received))
686 sta->dev_passwd_id = WPA_GET_BE16(attr->dev_password_id);
688 if (attr->manufacturer) {
689 os_free(sta->manufacturer);
690 sta->manufacturer = os_malloc(attr->manufacturer_len + 1);
691 if (sta->manufacturer) {
692 os_memcpy(sta->manufacturer, attr->manufacturer,
693 attr->manufacturer_len);
694 sta->manufacturer[attr->manufacturer_len] = '\0';
698 if (attr->model_name) {
699 os_free(sta->model_name);
700 sta->model_name = os_malloc(attr->model_name_len + 1);
701 if (sta->model_name) {
702 os_memcpy(sta->model_name, attr->model_name,
703 attr->model_name_len);
704 sta->model_name[attr->model_name_len] = '\0';
708 if (attr->model_number) {
709 os_free(sta->model_number);
710 sta->model_number = os_malloc(attr->model_number_len + 1);
711 if (sta->model_number) {
712 os_memcpy(sta->model_number, attr->model_number,
713 attr->model_number_len);
714 sta->model_number[attr->model_number_len] = '\0';
718 if (attr->serial_number) {
719 os_free(sta->serial_number);
720 sta->serial_number = os_malloc(attr->serial_number_len + 1);
721 if (sta->serial_number) {
722 os_memcpy(sta->serial_number, attr->serial_number,
723 attr->serial_number_len);
724 sta->serial_number[attr->serial_number_len] = '\0';
728 if (attr->dev_name) {
729 os_free(sta->dev_name);
730 sta->dev_name = os_malloc(attr->dev_name_len + 1);
732 os_memcpy(sta->dev_name, attr->dev_name,
734 sta->dev_name[attr->dev_name_len] = '\0';
738 eloop_cancel_timeout(wps_er_sta_timeout, sta, NULL);
739 eloop_register_timeout(300, 0, wps_er_sta_timeout, sta, NULL);
742 wps_er_sta_event(ap->er->wps, sta, WPS_EV_ER_ENROLLEE_ADD);
748 static void wps_er_process_wlanevent_probe_req(struct wps_er_ap *ap,
752 struct wps_parse_attr attr;
754 wpa_printf(MSG_DEBUG, "WPS ER: WLANEvent - Probe Request - from "
755 MACSTR, MAC2STR(addr));
756 wpa_hexdump_buf(MSG_MSGDUMP, "WPS ER: WLANEvent - Enrollee's message "
757 "(TLVs from Probe Request)", msg);
759 if (wps_parse_msg(msg, &attr) < 0) {
760 wpa_printf(MSG_DEBUG, "WPS ER: Failed to parse TLVs in "
761 "WLANEvent message");
765 wps_er_add_sta_data(ap, addr, &attr, 1);
769 static void wps_er_http_put_wlan_response_cb(void *ctx, struct http_client *c,
770 enum http_client_event event)
772 struct wps_er_sta *sta = ctx;
776 wpa_printf(MSG_DEBUG, "WPS ER: PutWLANResponse OK");
778 case HTTP_CLIENT_FAILED:
779 case HTTP_CLIENT_INVALID_REPLY:
780 case HTTP_CLIENT_TIMEOUT:
781 wpa_printf(MSG_DEBUG, "WPS ER: PutWLANResponse failed");
784 http_client_free(sta->http);
789 static const char *soap_prefix =
790 "<?xml version=\"1.0\"?>\n"
791 "<s:Envelope xmlns:s=\"http://schemas.xmlsoap.org/soap/envelope/\" "
792 "s:encodingStyle=\"http://schemas.xmlsoap.org/soap/encoding/\">\n"
794 static const char *soap_postfix =
795 "</s:Body>\n</s:Envelope>\n";
796 static const char *urn_wfawlanconfig =
797 "urn:schemas-wifialliance-org:service:WFAWLANConfig:1";
799 static struct wpabuf * wps_er_soap_hdr(const struct wpabuf *msg,
800 const char *name, const char *arg_name,
802 const struct sockaddr_in *dst,
803 char **len_ptr, char **body_ptr)
805 unsigned char *encoded;
810 encoded = base64_encode(wpabuf_head(msg), wpabuf_len(msg),
819 buf = wpabuf_alloc(1000 + encoded_len);
826 "POST %s HTTP/1.1\r\n"
828 "Content-Type: text/xml; charset=\"utf-8\"\r\n"
830 path, inet_ntoa(dst->sin_addr), ntohs(dst->sin_port));
832 *len_ptr = wpabuf_put(buf, 0);
835 "SOAPACTION: \"%s#%s\"\r\n"
837 urn_wfawlanconfig, name);
839 *body_ptr = wpabuf_put(buf, 0);
841 wpabuf_put_str(buf, soap_prefix);
842 wpabuf_printf(buf, "<u:%s xmlns:u=\"", name);
843 wpabuf_put_str(buf, urn_wfawlanconfig);
844 wpabuf_put_str(buf, "\">\n");
846 wpabuf_printf(buf, "<%s>%s</%s>\n",
847 arg_name, (char *) encoded, arg_name);
855 static void wps_er_soap_end(struct wpabuf *buf, const char *name,
856 char *len_ptr, char *body_ptr)
859 wpabuf_printf(buf, "</u:%s>\n", name);
860 wpabuf_put_str(buf, soap_postfix);
861 os_snprintf(len_buf, sizeof(len_buf), "%d",
862 (int) ((char *) wpabuf_put(buf, 0) - body_ptr));
863 os_memcpy(len_ptr, len_buf, os_strlen(len_buf));
867 static void wps_er_sta_send_msg(struct wps_er_sta *sta, struct wpabuf *msg)
870 char *len_ptr, *body_ptr;
871 struct sockaddr_in dst;
875 wpa_printf(MSG_DEBUG, "WPS ER: Pending HTTP request for STA - "
876 "ignore new request");
881 if (sta->ap->control_url == NULL) {
882 wpa_printf(MSG_DEBUG, "WPS ER: No controlURL for AP");
887 url = http_client_url_parse(sta->ap->control_url, &dst, &path);
889 wpa_printf(MSG_DEBUG, "WPS ER: Failed to parse controlURL");
894 buf = wps_er_soap_hdr(msg, "PutWLANResponse", "NewMessage", path, &dst,
895 &len_ptr, &body_ptr);
900 wpabuf_printf(buf, "<NewWLANEventType>%d</NewWLANEventType>\n",
901 UPNP_WPS_WLANEVENT_TYPE_EAP);
902 wpabuf_printf(buf, "<NewWLANEventMAC>" MACSTR "</NewWLANEventMAC>\n",
905 wps_er_soap_end(buf, "PutWLANResponse", len_ptr, body_ptr);
907 sta->http = http_client_addr(&dst, buf, 1000,
908 wps_er_http_put_wlan_response_cb, sta);
909 if (sta->http == NULL)
914 static void wps_er_sta_process(struct wps_er_sta *sta, struct wpabuf *msg,
915 enum wsc_op_code op_code)
917 enum wps_process_res res;
919 res = wps_process_msg(sta->wps, op_code, msg);
920 if (res == WPS_CONTINUE) {
921 struct wpabuf *next = wps_get_msg(sta->wps, &op_code);
923 wps_er_sta_send_msg(sta, next);
925 wpa_printf(MSG_DEBUG, "WPS ER: Protocol run %s with the "
927 res == WPS_DONE ? "succeeded" : "failed", res);
928 wps_deinit(sta->wps);
930 if (res == WPS_DONE) {
931 /* Remove the STA entry after short timeout */
932 eloop_cancel_timeout(wps_er_sta_timeout, sta, NULL);
933 eloop_register_timeout(10, 0, wps_er_sta_timeout, sta,
940 static void wps_er_sta_start(struct wps_er_sta *sta, struct wpabuf *msg)
942 struct wps_config cfg;
945 wps_deinit(sta->wps);
947 os_memset(&cfg, 0, sizeof(cfg));
948 cfg.wps = sta->ap->er->wps;
950 cfg.peer_addr = sta->addr;
952 sta->wps = wps_init(&cfg);
953 if (sta->wps == NULL)
956 sta->wps->use_cred = sta->ap->ap_settings;
957 if (sta->ap->ap_settings) {
959 sta->cred = os_malloc(sizeof(*sta->cred));
961 os_memcpy(sta->cred, sta->ap->ap_settings,
963 sta->cred->cred_attr = NULL;
964 os_memcpy(sta->cred->mac_addr, sta->addr, ETH_ALEN);
965 sta->wps->use_cred = sta->cred;
969 wps_er_sta_process(sta, msg, WSC_MSG);
973 static void wps_er_process_wlanevent_eap(struct wps_er_ap *ap, const u8 *addr,
976 struct wps_parse_attr attr;
977 struct wps_er_sta *sta;
979 wpa_printf(MSG_DEBUG, "WPS ER: WLANEvent - EAP - from " MACSTR,
981 wpa_hexdump_buf(MSG_MSGDUMP, "WPS ER: WLANEvent - Enrollee's message "
982 "(TLVs from EAP-WSC)", msg);
984 if (wps_parse_msg(msg, &attr) < 0) {
985 wpa_printf(MSG_DEBUG, "WPS ER: Failed to parse TLVs in "
986 "WLANEvent message");
990 sta = wps_er_add_sta_data(ap, addr, &attr, 0);
994 if (attr.msg_type && *attr.msg_type == WPS_M1)
995 wps_er_sta_start(sta, msg);
997 enum wsc_op_code op_code = WSC_MSG;
999 switch (*attr.msg_type) {
1011 wps_er_sta_process(sta, msg, op_code);
1016 static void wps_er_process_wlanevent(struct wps_er_ap *ap,
1017 struct wpabuf *event)
1021 u8 wlan_event_mac[ETH_ALEN];
1024 wpa_hexdump(MSG_MSGDUMP, "WPS ER: Received WLANEvent",
1025 wpabuf_head(event), wpabuf_len(event));
1026 if (wpabuf_len(event) < 1 + 17) {
1027 wpa_printf(MSG_DEBUG, "WPS ER: Too short WLANEvent");
1031 data = wpabuf_mhead(event);
1032 wlan_event_type = data[0];
1033 if (hwaddr_aton((char *) data + 1, wlan_event_mac) < 0) {
1034 wpa_printf(MSG_DEBUG, "WPS ER: Invalid WLANEventMAC in "
1039 wpabuf_set(&msg, data + 1 + 17, wpabuf_len(event) - (1 + 17));
1041 switch (wlan_event_type) {
1043 wps_er_process_wlanevent_probe_req(ap, wlan_event_mac, &msg);
1046 wps_er_process_wlanevent_eap(ap, wlan_event_mac, &msg);
1049 wpa_printf(MSG_DEBUG, "WPS ER: Unknown WLANEventType %d",
1056 static void wps_er_http_event(struct wps_er *er, struct http_request *req,
1059 struct wps_er_ap *ap = wps_er_ap_get_id(er, ap_id);
1060 struct wpabuf *event;
1061 enum http_reply_code ret;
1064 wpa_printf(MSG_DEBUG, "WPS ER: HTTP event from unknown AP id "
1066 wps_er_http_resp_not_found(req);
1069 wpa_printf(MSG_MSGDUMP, "WPS ER: HTTP event from AP id %u: %s",
1070 ap_id, http_request_get_data(req));
1072 event = xml_get_base64_item(http_request_get_data(req), "WLANEvent",
1074 if (event == NULL) {
1075 wpa_printf(MSG_DEBUG, "WPS ER: Could not extract WLANEvent "
1076 "from the event notification");
1078 * Reply with OK anyway to avoid getting unregistered from
1081 wps_er_http_resp_ok(req);
1085 wps_er_process_wlanevent(ap, event);
1088 wps_er_http_resp_ok(req);
1092 static void wps_er_http_notify(struct wps_er *er, struct http_request *req)
1094 char *uri = http_request_get_uri(req);
1096 if (os_strncmp(uri, "/event/", 7) == 0) {
1097 unsigned int event_id;
1099 event_id = atoi(uri + 7);
1100 if (event_id != er->event_id) {
1101 wpa_printf(MSG_DEBUG, "WPS ER: HTTP event for an "
1102 "unknown event id %u", event_id);
1105 pos = os_strchr(uri + 7, '/');
1109 wps_er_http_event(er, req, atoi(pos));
1111 wpa_printf(MSG_DEBUG, "WPS ER: Unknown HTTP NOTIFY for '%s'",
1113 wps_er_http_resp_not_found(req);
1118 static void wps_er_http_req(void *ctx, struct http_request *req)
1120 struct wps_er *er = ctx;
1121 struct sockaddr_in *cli = http_request_get_cli_addr(req);
1122 enum httpread_hdr_type type = http_request_get_type(req);
1125 wpa_printf(MSG_DEBUG, "WPS ER: HTTP request: '%s' (type %d) from "
1127 http_request_get_uri(req), type,
1128 inet_ntoa(cli->sin_addr), ntohs(cli->sin_port));
1131 case HTTPREAD_HDR_TYPE_NOTIFY:
1132 wps_er_http_notify(er, req);
1135 wpa_printf(MSG_DEBUG, "WPS ER: Unsupported HTTP request type "
1137 buf = wpabuf_alloc(200);
1139 http_request_deinit(req);
1143 "HTTP/1.1 501 Unimplemented\r\n"
1144 "Connection: close\r\n");
1146 wpabuf_put_str(buf, "\r\n");
1147 http_request_send_and_deinit(req, buf);
1154 wps_er_init(struct wps_context *wps, const char *ifname)
1157 struct in_addr addr;
1159 er = os_zalloc(sizeof(*er));
1162 dl_list_init(&er->ap);
1163 dl_list_init(&er->ap_unsubscribing);
1165 er->multicast_sd = -1;
1168 os_strlcpy(er->ifname, ifname, sizeof(er->ifname));
1170 if (os_get_random((unsigned char *) &er->event_id,
1171 sizeof(er->event_id)) < 0) {
1172 wps_er_deinit(er, NULL, NULL);
1175 /* Limit event_id to < 32 bits to avoid issues with atoi() */
1176 er->event_id &= 0x0fffffff;
1178 if (get_netif_info(ifname, &er->ip_addr, &er->ip_addr_text,
1180 wpa_printf(MSG_INFO, "WPS UPnP: Could not get IP/MAC address "
1181 "for %s. Does it have IP address?", ifname);
1182 wps_er_deinit(er, NULL, NULL);
1186 if (wps_er_ssdp_init(er) < 0) {
1187 wps_er_deinit(er, NULL, NULL);
1191 addr.s_addr = er->ip_addr;
1192 er->http_srv = http_server_init(&addr, -1, wps_er_http_req, er);
1193 if (er->http_srv == NULL) {
1194 wps_er_deinit(er, NULL, NULL);
1197 er->http_port = http_server_get_port(er->http_srv);
1199 wpa_printf(MSG_DEBUG, "WPS ER: Start (ifname=%s ip_addr=%s)",
1200 er->ifname, er->ip_addr_text);
1206 void wps_er_refresh(struct wps_er *er)
1208 struct wps_er_ap *ap;
1209 struct wps_er_sta *sta;
1211 dl_list_for_each(ap, &er->ap, struct wps_er_ap, list) {
1212 wps_er_ap_event(er->wps, ap, WPS_EV_ER_AP_ADD);
1213 dl_list_for_each(sta, &ap->sta, struct wps_er_sta, list)
1214 wps_er_sta_event(er->wps, sta, WPS_EV_ER_ENROLLEE_ADD);
1217 wps_er_send_ssdp_msearch(er);
1221 static void wps_er_deinit_finish(void *eloop_data, void *user_ctx)
1223 struct wps_er *er = eloop_data;
1224 void (*deinit_done_cb)(void *ctx);
1225 void *deinit_done_ctx;
1227 wpa_printf(MSG_DEBUG, "WPS ER: Finishing deinit");
1229 deinit_done_cb = er->deinit_done_cb;
1230 deinit_done_ctx = er->deinit_done_ctx;
1231 os_free(er->ip_addr_text);
1235 deinit_done_cb(deinit_done_ctx);
1239 void wps_er_deinit(struct wps_er *er, void (*cb)(void *ctx), void *ctx)
1243 http_server_deinit(er->http_srv);
1244 wps_er_ap_remove_all(er);
1245 wps_er_ssdp_deinit(er);
1246 eloop_register_timeout(dl_list_empty(&er->ap_unsubscribing) ? 0 : 5, 0,
1247 wps_er_deinit_finish, er, NULL);
1248 wpa_printf(MSG_DEBUG, "WPS ER: Finish deinit from timeout");
1249 er->deinitializing = 1;
1250 er->deinit_done_cb = cb;
1251 er->deinit_done_ctx = ctx;
1255 static void wps_er_http_set_sel_reg_cb(void *ctx, struct http_client *c,
1256 enum http_client_event event)
1258 struct wps_er_ap *ap = ctx;
1261 case HTTP_CLIENT_OK:
1262 wpa_printf(MSG_DEBUG, "WPS ER: SetSelectedRegistrar OK");
1264 case HTTP_CLIENT_FAILED:
1265 case HTTP_CLIENT_INVALID_REPLY:
1266 case HTTP_CLIENT_TIMEOUT:
1267 wpa_printf(MSG_DEBUG, "WPS ER: SetSelectedRegistrar failed");
1270 http_client_free(ap->http);
1275 static void wps_er_send_set_sel_reg(struct wps_er_ap *ap, struct wpabuf *msg)
1278 char *len_ptr, *body_ptr;
1279 struct sockaddr_in dst;
1282 if (ap->control_url == NULL) {
1283 wpa_printf(MSG_DEBUG, "WPS ER: No controlURL for AP");
1288 wpa_printf(MSG_DEBUG, "WPS ER: Pending HTTP request for AP - "
1289 "ignore new request");
1293 url = http_client_url_parse(ap->control_url, &dst, &path);
1295 wpa_printf(MSG_DEBUG, "WPS ER: Failed to parse controlURL");
1299 buf = wps_er_soap_hdr(msg, "SetSelectedRegistrar", "NewMessage", path,
1300 &dst, &len_ptr, &body_ptr);
1305 wps_er_soap_end(buf, "SetSelectedRegistrar", len_ptr, body_ptr);
1307 ap->http = http_client_addr(&dst, buf, 1000,
1308 wps_er_http_set_sel_reg_cb, ap);
1309 if (ap->http == NULL)
1314 static int wps_er_build_selected_registrar(struct wpabuf *msg, int sel_reg)
1316 wpabuf_put_be16(msg, ATTR_SELECTED_REGISTRAR);
1317 wpabuf_put_be16(msg, 1);
1318 wpabuf_put_u8(msg, !!sel_reg);
1323 static int wps_er_build_dev_password_id(struct wpabuf *msg, u16 dev_passwd_id)
1325 wpabuf_put_be16(msg, ATTR_DEV_PASSWORD_ID);
1326 wpabuf_put_be16(msg, 2);
1327 wpabuf_put_be16(msg, dev_passwd_id);
1332 static int wps_er_build_sel_reg_config_methods(struct wpabuf *msg,
1333 u16 sel_reg_config_methods)
1335 wpabuf_put_be16(msg, ATTR_SELECTED_REGISTRAR_CONFIG_METHODS);
1336 wpabuf_put_be16(msg, 2);
1337 wpabuf_put_be16(msg, sel_reg_config_methods);
1342 void wps_er_set_sel_reg(struct wps_er *er, int sel_reg, u16 dev_passwd_id,
1343 u16 sel_reg_config_methods)
1346 struct wps_er_ap *ap;
1348 msg = wpabuf_alloc(500);
1352 if (wps_build_version(msg) ||
1353 wps_er_build_selected_registrar(msg, sel_reg) ||
1354 wps_er_build_dev_password_id(msg, dev_passwd_id) ||
1355 wps_er_build_sel_reg_config_methods(msg, sel_reg_config_methods)) {
1360 dl_list_for_each(ap, &er->ap, struct wps_er_ap, list)
1361 wps_er_send_set_sel_reg(ap, msg);
1367 int wps_er_pbc(struct wps_er *er, const u8 *uuid)
1369 if (er == NULL || er->wps == NULL)
1373 * TODO: Should enable PBC mode only in a single AP based on which AP
1374 * the Enrollee (uuid) is using. Now, we may end up enabling multiple
1375 * APs in PBC mode which could result in session overlap at the
1378 if (wps_registrar_button_pushed(er->wps->registrar))
1385 static void wps_er_ap_settings_cb(void *ctx, const struct wps_credential *cred)
1387 struct wps_er_ap *ap = ctx;
1388 wpa_printf(MSG_DEBUG, "WPS ER: AP Settings received");
1389 os_free(ap->ap_settings);
1390 ap->ap_settings = os_malloc(sizeof(*cred));
1391 if (ap->ap_settings) {
1392 os_memcpy(ap->ap_settings, cred, sizeof(*cred));
1393 ap->ap_settings->cred_attr = NULL;
1396 /* TODO: send info through ctrl_iface */
1400 static void wps_er_http_put_message_cb(void *ctx, struct http_client *c,
1401 enum http_client_event event)
1403 struct wps_er_ap *ap = ctx;
1404 struct wpabuf *reply;
1408 case HTTP_CLIENT_OK:
1409 wpa_printf(MSG_DEBUG, "WPS ER: PutMessage OK");
1410 reply = http_client_get_body(c);
1413 msg = os_zalloc(wpabuf_len(reply) + 1);
1416 os_memcpy(msg, wpabuf_head(reply), wpabuf_len(reply));
1418 case HTTP_CLIENT_FAILED:
1419 case HTTP_CLIENT_INVALID_REPLY:
1420 case HTTP_CLIENT_TIMEOUT:
1421 wpa_printf(MSG_DEBUG, "WPS ER: PutMessage failed");
1423 wps_deinit(ap->wps);
1428 http_client_free(ap->http);
1433 enum http_reply_code ret;
1434 buf = xml_get_base64_item(msg, "NewOutMessage", &ret);
1437 wpa_printf(MSG_DEBUG, "WPS ER: Could not extract "
1438 "NewOutMessage from PutMessage response");
1441 wps_er_ap_process(ap, buf);
1447 static void wps_er_ap_put_message(struct wps_er_ap *ap,
1448 const struct wpabuf *msg)
1451 char *len_ptr, *body_ptr;
1452 struct sockaddr_in dst;
1456 wpa_printf(MSG_DEBUG, "WPS ER: Pending HTTP operation ongoing "
1457 "with the AP - cannot continue learn");
1461 if (ap->control_url == NULL) {
1462 wpa_printf(MSG_DEBUG, "WPS ER: No controlURL for AP");
1466 url = http_client_url_parse(ap->control_url, &dst, &path);
1468 wpa_printf(MSG_DEBUG, "WPS ER: Failed to parse controlURL");
1472 buf = wps_er_soap_hdr(msg, "PutMessage", "NewInMessage", path, &dst,
1473 &len_ptr, &body_ptr);
1478 wps_er_soap_end(buf, "PutMessage", len_ptr, body_ptr);
1480 ap->http = http_client_addr(&dst, buf, 10000,
1481 wps_er_http_put_message_cb, ap);
1482 if (ap->http == NULL)
1487 static void wps_er_ap_process(struct wps_er_ap *ap, struct wpabuf *msg)
1489 enum wps_process_res res;
1491 res = wps_process_msg(ap->wps, WSC_MSG, msg);
1492 if (res == WPS_CONTINUE) {
1493 enum wsc_op_code op_code;
1494 struct wpabuf *next = wps_get_msg(ap->wps, &op_code);
1496 wps_er_ap_put_message(ap, next);
1499 wpa_printf(MSG_DEBUG, "WPS ER: Failed to build "
1501 wps_deinit(ap->wps);
1505 wpa_printf(MSG_DEBUG, "WPS ER: Failed to process message from "
1506 "AP (res=%d)", res);
1507 wps_deinit(ap->wps);
1513 static void wps_er_ap_learn_m1(struct wps_er_ap *ap, struct wpabuf *m1)
1515 struct wps_config cfg;
1518 wpa_printf(MSG_DEBUG, "WPS ER: Protocol run already in "
1519 "progress with this AP");
1523 os_memset(&cfg, 0, sizeof(cfg));
1524 cfg.wps = ap->er->wps;
1526 ap->wps = wps_init(&cfg);
1527 if (ap->wps == NULL)
1529 ap->wps->ap_settings_cb = wps_er_ap_settings_cb;
1530 ap->wps->ap_settings_cb_ctx = ap;
1532 wps_er_ap_process(ap, m1);
1536 static void wps_er_ap_learn(struct wps_er_ap *ap, const char *dev_info)
1538 struct wpabuf *info;
1539 enum http_reply_code ret;
1541 wpa_printf(MSG_DEBUG, "WPS ER: Received GetDeviceInfo response (M1) "
1543 info = xml_get_base64_item(dev_info, "NewDeviceInfo", &ret);
1545 wpa_printf(MSG_DEBUG, "WPS ER: Could not extract "
1546 "NewDeviceInfo from GetDeviceInfo response");
1550 ap->m1_handler(ap, info);
1555 static void wps_er_http_get_dev_info_cb(void *ctx, struct http_client *c,
1556 enum http_client_event event)
1558 struct wps_er_ap *ap = ctx;
1559 struct wpabuf *reply;
1560 char *dev_info = NULL;
1563 case HTTP_CLIENT_OK:
1564 wpa_printf(MSG_DEBUG, "WPS ER: GetDeviceInfo OK");
1565 reply = http_client_get_body(c);
1568 dev_info = os_zalloc(wpabuf_len(reply) + 1);
1569 if (dev_info == NULL)
1571 os_memcpy(dev_info, wpabuf_head(reply), wpabuf_len(reply));
1573 case HTTP_CLIENT_FAILED:
1574 case HTTP_CLIENT_INVALID_REPLY:
1575 case HTTP_CLIENT_TIMEOUT:
1576 wpa_printf(MSG_DEBUG, "WPS ER: GetDeviceInfo failed");
1579 http_client_free(ap->http);
1583 wps_er_ap_learn(ap, dev_info);
1589 static int wps_er_send_get_device_info(struct wps_er_ap *ap,
1590 void (*m1_handler)(struct wps_er_ap *ap,
1594 char *len_ptr, *body_ptr;
1595 struct sockaddr_in dst;
1599 wpa_printf(MSG_DEBUG, "WPS ER: Pending HTTP operation ongoing "
1600 "with the AP - cannot get device info");
1604 if (ap->control_url == NULL) {
1605 wpa_printf(MSG_DEBUG, "WPS ER: No controlURL for AP");
1609 url = http_client_url_parse(ap->control_url, &dst, &path);
1611 wpa_printf(MSG_DEBUG, "WPS ER: Failed to parse controlURL");
1615 buf = wps_er_soap_hdr(NULL, "GetDeviceInfo", NULL, path, &dst,
1616 &len_ptr, &body_ptr);
1621 wps_er_soap_end(buf, "GetDeviceInfo", len_ptr, body_ptr);
1623 ap->http = http_client_addr(&dst, buf, 10000,
1624 wps_er_http_get_dev_info_cb, ap);
1625 if (ap->http == NULL) {
1630 ap->m1_handler = m1_handler;
1636 int wps_er_learn(struct wps_er *er, const u8 *uuid, const u8 *pin,
1639 struct wps_er_ap *ap;
1644 ap = wps_er_ap_get(er, NULL, uuid);
1646 wpa_printf(MSG_DEBUG, "WPS ER: AP not found for learn "
1651 wpa_printf(MSG_DEBUG, "WPS ER: Pending operation ongoing "
1652 "with the AP - cannot start learn");
1656 if (wps_er_send_get_device_info(ap, wps_er_ap_learn_m1) < 0)
1659 /* TODO: add PIN without SetSelectedRegistrar trigger to all APs */
1660 wps_registrar_add_pin(er->wps->registrar, uuid, pin, pin_len, 0);