2 * Interworking (IEEE 802.11u)
3 * Copyright (c) 2011-2013, Qualcomm Atheros, Inc.
4 * Copyright (c) 2011-2014, Jouni Malinen <j@w1.fi>
6 * This software may be distributed under the terms of the BSD license.
7 * See README for more details.
13 #include "common/ieee802_11_defs.h"
14 #include "common/gas.h"
15 #include "common/wpa_ctrl.h"
16 #include "utils/pcsc_funcs.h"
17 #include "utils/eloop.h"
18 #include "drivers/driver.h"
19 #include "eap_common/eap_defs.h"
20 #include "eap_peer/eap.h"
21 #include "eap_peer/eap_methods.h"
22 #include "eapol_supp/eapol_supp_sm.h"
23 #include "rsn_supp/wpa.h"
24 #include "wpa_supplicant_i.h"
26 #include "config_ssid.h"
31 #include "gas_query.h"
32 #include "hs20_supplicant.h"
33 #include "interworking.h"
36 #if defined(EAP_SIM) | defined(EAP_SIM_DYNAMIC)
37 #define INTERWORKING_3GPP
39 #if defined(EAP_AKA) | defined(EAP_AKA_DYNAMIC)
40 #define INTERWORKING_3GPP
42 #if defined(EAP_AKA_PRIME) | defined(EAP_AKA_PRIME_DYNAMIC)
43 #define INTERWORKING_3GPP
48 static void interworking_next_anqp_fetch(struct wpa_supplicant *wpa_s);
49 static struct wpa_cred * interworking_credentials_available_realm(
50 struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw,
52 static struct wpa_cred * interworking_credentials_available_3gpp(
53 struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw,
57 static int cred_prio_cmp(const struct wpa_cred *a, const struct wpa_cred *b)
59 if (a->priority > b->priority)
61 if (a->priority < b->priority)
63 if (a->provisioning_sp == NULL || b->provisioning_sp == NULL ||
64 os_strcmp(a->provisioning_sp, b->provisioning_sp) != 0)
66 if (a->sp_priority < b->sp_priority)
68 if (a->sp_priority > b->sp_priority)
74 static void interworking_reconnect(struct wpa_supplicant *wpa_s)
78 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
79 wpa_supplicant_cancel_sched_scan(wpa_s);
80 wpa_s->own_disconnect_req = 1;
81 wpa_supplicant_deauthenticate(wpa_s,
82 WLAN_REASON_DEAUTH_LEAVING);
84 wpa_s->disconnected = 0;
85 wpa_s->reassociate = 1;
86 tried = wpa_s->interworking_fast_assoc_tried;
87 wpa_s->interworking_fast_assoc_tried = 1;
89 if (!tried && wpa_supplicant_fast_associate(wpa_s) >= 0)
92 wpa_s->interworking_fast_assoc_tried = 0;
93 wpa_supplicant_req_scan(wpa_s, 0, 0);
97 static struct wpabuf * anqp_build_req(u16 info_ids[], size_t num_ids,
104 buf = gas_anqp_build_initial_req(0, 4 + num_ids * 2 +
105 (extra ? wpabuf_len(extra) : 0));
109 len_pos = gas_anqp_add_element(buf, ANQP_QUERY_LIST);
110 for (i = 0; i < num_ids; i++)
111 wpabuf_put_le16(buf, info_ids[i]);
112 gas_anqp_set_element_len(buf, len_pos);
114 wpabuf_put_buf(buf, extra);
116 gas_anqp_set_len(buf);
122 static void interworking_anqp_resp_cb(void *ctx, const u8 *dst,
124 enum gas_query_result result,
125 const struct wpabuf *adv_proto,
126 const struct wpabuf *resp,
129 struct wpa_supplicant *wpa_s = ctx;
131 wpa_printf(MSG_DEBUG, "ANQP: Response callback dst=" MACSTR
132 " dialog_token=%u result=%d status_code=%u",
133 MAC2STR(dst), dialog_token, result, status_code);
134 anqp_resp_cb(wpa_s, dst, dialog_token, result, adv_proto, resp,
136 interworking_next_anqp_fetch(wpa_s);
140 static int cred_with_roaming_consortium(struct wpa_supplicant *wpa_s)
142 struct wpa_cred *cred;
144 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
145 if (cred->roaming_consortium_len)
147 if (cred->required_roaming_consortium_len)
154 static int cred_with_3gpp(struct wpa_supplicant *wpa_s)
156 struct wpa_cred *cred;
158 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
159 if (cred->pcsc || cred->imsi)
166 static int cred_with_nai_realm(struct wpa_supplicant *wpa_s)
168 struct wpa_cred *cred;
170 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
171 if (cred->pcsc || cred->imsi)
173 if (!cred->eap_method)
175 if (cred->realm && cred->roaming_consortium_len == 0)
182 static int cred_with_domain(struct wpa_supplicant *wpa_s)
184 struct wpa_cred *cred;
186 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
187 if (cred->domain || cred->pcsc || cred->imsi ||
188 cred->roaming_partner)
197 static int cred_with_min_backhaul(struct wpa_supplicant *wpa_s)
199 struct wpa_cred *cred;
201 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
202 if (cred->min_dl_bandwidth_home ||
203 cred->min_ul_bandwidth_home ||
204 cred->min_dl_bandwidth_roaming ||
205 cred->min_ul_bandwidth_roaming)
212 static int cred_with_conn_capab(struct wpa_supplicant *wpa_s)
214 struct wpa_cred *cred;
216 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
217 if (cred->num_req_conn_capab)
223 #endif /* CONFIG_HS20 */
226 static int additional_roaming_consortiums(struct wpa_bss *bss)
229 ie = wpa_bss_get_ie(bss, WLAN_EID_ROAMING_CONSORTIUM);
230 if (ie == NULL || ie[1] == 0)
232 return ie[2]; /* Number of ANQP OIs */
236 static void interworking_continue_anqp(void *eloop_ctx, void *sock_ctx)
238 struct wpa_supplicant *wpa_s = eloop_ctx;
239 interworking_next_anqp_fetch(wpa_s);
243 static int interworking_anqp_send_req(struct wpa_supplicant *wpa_s,
250 size_t num_info_ids = 0;
251 struct wpabuf *extra = NULL;
252 int all = wpa_s->fetch_all_anqp;
254 wpa_msg(wpa_s, MSG_DEBUG, "Interworking: ANQP Query Request to " MACSTR,
255 MAC2STR(bss->bssid));
256 wpa_s->interworking_gas_bss = bss;
258 info_ids[num_info_ids++] = ANQP_CAPABILITY_LIST;
260 info_ids[num_info_ids++] = ANQP_VENUE_NAME;
261 info_ids[num_info_ids++] = ANQP_NETWORK_AUTH_TYPE;
263 if (all || (cred_with_roaming_consortium(wpa_s) &&
264 additional_roaming_consortiums(bss)))
265 info_ids[num_info_ids++] = ANQP_ROAMING_CONSORTIUM;
267 info_ids[num_info_ids++] = ANQP_IP_ADDR_TYPE_AVAILABILITY;
268 if (all || cred_with_nai_realm(wpa_s))
269 info_ids[num_info_ids++] = ANQP_NAI_REALM;
270 if (all || cred_with_3gpp(wpa_s)) {
271 info_ids[num_info_ids++] = ANQP_3GPP_CELLULAR_NETWORK;
272 wpa_supplicant_scard_init(wpa_s, NULL);
274 if (all || cred_with_domain(wpa_s))
275 info_ids[num_info_ids++] = ANQP_DOMAIN_NAME;
276 wpa_hexdump(MSG_DEBUG, "Interworking: ANQP Query info",
277 (u8 *) info_ids, num_info_ids * 2);
280 if (wpa_bss_get_vendor_ie(bss, HS20_IE_VENDOR_TYPE)) {
283 extra = wpabuf_alloc(100);
287 len_pos = gas_anqp_add_element(extra, ANQP_VENDOR_SPECIFIC);
288 wpabuf_put_be24(extra, OUI_WFA);
289 wpabuf_put_u8(extra, HS20_ANQP_OUI_TYPE);
290 wpabuf_put_u8(extra, HS20_STYPE_QUERY_LIST);
291 wpabuf_put_u8(extra, 0); /* Reserved */
292 wpabuf_put_u8(extra, HS20_STYPE_CAPABILITY_LIST);
295 HS20_STYPE_OPERATOR_FRIENDLY_NAME);
296 if (all || cred_with_min_backhaul(wpa_s))
297 wpabuf_put_u8(extra, HS20_STYPE_WAN_METRICS);
298 if (all || cred_with_conn_capab(wpa_s))
299 wpabuf_put_u8(extra, HS20_STYPE_CONNECTION_CAPABILITY);
301 wpabuf_put_u8(extra, HS20_STYPE_OPERATING_CLASS);
303 wpabuf_put_u8(extra, HS20_STYPE_OSU_PROVIDERS_LIST);
304 gas_anqp_set_element_len(extra, len_pos);
306 #endif /* CONFIG_HS20 */
308 buf = anqp_build_req(info_ids, num_info_ids, extra);
313 res = gas_query_req(wpa_s->gas, bss->bssid, bss->freq, buf,
314 interworking_anqp_resp_cb, wpa_s);
316 wpa_msg(wpa_s, MSG_DEBUG, "ANQP: Failed to send Query Request");
319 eloop_register_timeout(0, 0, interworking_continue_anqp, wpa_s,
322 wpa_msg(wpa_s, MSG_DEBUG,
323 "ANQP: Query started with dialog token %u", res);
329 struct nai_realm_eap {
332 enum nai_realm_eap_auth_inner_non_eap inner_non_eap;
334 u8 tunneled_cred_type;
341 struct nai_realm_eap *eap;
345 static void nai_realm_free(struct nai_realm *realms, u16 count)
351 for (i = 0; i < count; i++) {
352 os_free(realms[i].eap);
353 os_free(realms[i].realm);
359 static const u8 * nai_realm_parse_eap(struct nai_realm_eap *e, const u8 *pos,
362 u8 elen, auth_count, a;
366 wpa_printf(MSG_DEBUG, "No room for EAP Method fixed fields");
371 if (elen > end - pos || elen < 2) {
372 wpa_printf(MSG_DEBUG, "No room for EAP Method subfield");
378 wpa_printf(MSG_DEBUG, "EAP Method: len=%u method=%u auth_count=%u",
379 elen, e->method, auth_count);
381 for (a = 0; a < auth_count; a++) {
385 wpa_printf(MSG_DEBUG,
386 "No room for Authentication Parameter subfield header");
392 if (len > end - pos) {
393 wpa_printf(MSG_DEBUG,
394 "No room for Authentication Parameter subfield");
399 case NAI_REALM_EAP_AUTH_NON_EAP_INNER_AUTH:
402 e->inner_non_eap = *pos;
403 if (e->method != EAP_TYPE_TTLS)
406 case NAI_REALM_INNER_NON_EAP_PAP:
407 wpa_printf(MSG_DEBUG, "EAP-TTLS/PAP");
409 case NAI_REALM_INNER_NON_EAP_CHAP:
410 wpa_printf(MSG_DEBUG, "EAP-TTLS/CHAP");
412 case NAI_REALM_INNER_NON_EAP_MSCHAP:
413 wpa_printf(MSG_DEBUG, "EAP-TTLS/MSCHAP");
415 case NAI_REALM_INNER_NON_EAP_MSCHAPV2:
416 wpa_printf(MSG_DEBUG, "EAP-TTLS/MSCHAPV2");
420 case NAI_REALM_EAP_AUTH_INNER_AUTH_EAP_METHOD:
423 e->inner_method = *pos;
424 wpa_printf(MSG_DEBUG, "Inner EAP method: %u",
427 case NAI_REALM_EAP_AUTH_CRED_TYPE:
431 wpa_printf(MSG_DEBUG, "Credential Type: %u",
434 case NAI_REALM_EAP_AUTH_TUNNELED_CRED_TYPE:
437 e->tunneled_cred_type = *pos;
438 wpa_printf(MSG_DEBUG, "Tunneled EAP Method Credential "
439 "Type: %u", e->tunneled_cred_type);
442 wpa_printf(MSG_DEBUG, "Unsupported Authentication "
443 "Parameter: id=%u len=%u", id, len);
444 wpa_hexdump(MSG_DEBUG, "Authentication Parameter "
456 static const u8 * nai_realm_parse_realm(struct nai_realm *r, const u8 *pos,
464 wpa_printf(MSG_DEBUG, "No room for NAI Realm Data "
469 len = WPA_GET_LE16(pos); /* NAI Realm Data field Length */
471 if (len > end - pos || len < 3) {
472 wpa_printf(MSG_DEBUG, "No room for NAI Realm Data "
474 len, (unsigned int) (end - pos));
479 r->encoding = *pos++;
481 if (realm_len > f_end - pos) {
482 wpa_printf(MSG_DEBUG, "No room for NAI Realm "
484 realm_len, (unsigned int) (f_end - pos));
487 wpa_hexdump_ascii(MSG_DEBUG, "NAI Realm", pos, realm_len);
488 r->realm = dup_binstr(pos, realm_len);
489 if (r->realm == NULL)
493 if (f_end - pos < 1) {
494 wpa_printf(MSG_DEBUG, "No room for EAP Method Count");
497 r->eap_count = *pos++;
498 wpa_printf(MSG_DEBUG, "EAP Count: %u", r->eap_count);
499 if (r->eap_count * 3 > f_end - pos) {
500 wpa_printf(MSG_DEBUG, "No room for EAP Methods");
503 r->eap = os_calloc(r->eap_count, sizeof(struct nai_realm_eap));
507 for (e = 0; e < r->eap_count; e++) {
508 pos = nai_realm_parse_eap(&r->eap[e], pos, f_end);
517 static struct nai_realm * nai_realm_parse(struct wpabuf *anqp, u16 *count)
519 struct nai_realm *realm;
526 left = wpabuf_len(anqp);
530 pos = wpabuf_head_u8(anqp);
532 num = WPA_GET_LE16(pos);
533 wpa_printf(MSG_DEBUG, "NAI Realm Count: %u", num);
537 if (num > left / 5) {
538 wpa_printf(MSG_DEBUG, "Invalid NAI Realm Count %u - not "
539 "enough data (%u octets) for that many realms",
540 num, (unsigned int) left);
544 realm = os_calloc(num, sizeof(struct nai_realm));
548 for (i = 0; i < num; i++) {
549 pos = nai_realm_parse_realm(&realm[i], pos, end);
551 nai_realm_free(realm, num);
561 static int nai_realm_match(struct nai_realm *realm, const char *home_realm)
563 char *tmp, *pos, *end;
566 if (realm->realm == NULL || home_realm == NULL)
569 if (os_strchr(realm->realm, ';') == NULL)
570 return os_strcasecmp(realm->realm, home_realm) == 0;
572 tmp = os_strdup(realm->realm);
578 end = os_strchr(pos, ';');
581 if (os_strcasecmp(pos, home_realm) == 0) {
596 static int nai_realm_cred_username(struct wpa_supplicant *wpa_s,
597 struct nai_realm_eap *eap)
599 if (eap_get_name(EAP_VENDOR_IETF, eap->method) == NULL) {
600 wpa_msg(wpa_s, MSG_DEBUG,
601 "nai-realm-cred-username: EAP method not supported: %d",
603 return 0; /* method not supported */
606 if (eap->method != EAP_TYPE_TTLS && eap->method != EAP_TYPE_PEAP &&
607 eap->method != EAP_TYPE_FAST) {
608 /* Only tunneled methods with username/password supported */
609 wpa_msg(wpa_s, MSG_DEBUG,
610 "nai-realm-cred-username: Method: %d is not TTLS, PEAP, or FAST",
615 if (eap->method == EAP_TYPE_PEAP || eap->method == EAP_TYPE_FAST) {
616 if (eap->inner_method &&
617 eap_get_name(EAP_VENDOR_IETF, eap->inner_method) == NULL) {
618 wpa_msg(wpa_s, MSG_DEBUG,
619 "nai-realm-cred-username: PEAP/FAST: Inner method not supported: %d",
623 if (!eap->inner_method &&
624 eap_get_name(EAP_VENDOR_IETF, EAP_TYPE_MSCHAPV2) == NULL) {
625 wpa_msg(wpa_s, MSG_DEBUG,
626 "nai-realm-cred-username: MSCHAPv2 not supported");
631 if (eap->method == EAP_TYPE_TTLS) {
632 if (eap->inner_method == 0 && eap->inner_non_eap == 0)
633 return 1; /* Assume TTLS/MSCHAPv2 is used */
634 if (eap->inner_method &&
635 eap_get_name(EAP_VENDOR_IETF, eap->inner_method) == NULL) {
636 wpa_msg(wpa_s, MSG_DEBUG,
637 "nai-realm-cred-username: TTLS, but inner not supported: %d",
641 if (eap->inner_non_eap &&
642 eap->inner_non_eap != NAI_REALM_INNER_NON_EAP_PAP &&
643 eap->inner_non_eap != NAI_REALM_INNER_NON_EAP_CHAP &&
644 eap->inner_non_eap != NAI_REALM_INNER_NON_EAP_MSCHAP &&
645 eap->inner_non_eap != NAI_REALM_INNER_NON_EAP_MSCHAPV2) {
646 wpa_msg(wpa_s, MSG_DEBUG,
647 "nai-realm-cred-username: TTLS, inner-non-eap not supported: %d",
653 if (eap->inner_method &&
654 eap->inner_method != EAP_TYPE_GTC &&
655 eap->inner_method != EAP_TYPE_MSCHAPV2) {
656 wpa_msg(wpa_s, MSG_DEBUG,
657 "nai-realm-cred-username: inner-method not GTC or MSCHAPv2: %d",
666 static int nai_realm_cred_cert(struct wpa_supplicant *wpa_s,
667 struct nai_realm_eap *eap)
669 if (eap_get_name(EAP_VENDOR_IETF, eap->method) == NULL) {
670 wpa_msg(wpa_s, MSG_DEBUG,
671 "nai-realm-cred-cert: Method not supported: %d",
673 return 0; /* method not supported */
676 if (eap->method != EAP_TYPE_TLS) {
677 /* Only EAP-TLS supported for credential authentication */
678 wpa_msg(wpa_s, MSG_DEBUG,
679 "nai-realm-cred-cert: Method not TLS: %d",
688 static struct nai_realm_eap * nai_realm_find_eap(struct wpa_supplicant *wpa_s,
689 struct wpa_cred *cred,
690 struct nai_realm *realm)
694 if (cred->username == NULL ||
695 cred->username[0] == '\0' ||
696 ((cred->password == NULL ||
697 cred->password[0] == '\0') &&
698 (cred->private_key == NULL ||
699 cred->private_key[0] == '\0'))) {
700 wpa_msg(wpa_s, MSG_DEBUG,
701 "nai-realm-find-eap: incomplete cred info: username: %s password: %s private_key: %s",
702 cred->username ? cred->username : "NULL",
703 cred->password ? cred->password : "NULL",
704 cred->private_key ? cred->private_key : "NULL");
708 for (e = 0; e < realm->eap_count; e++) {
709 struct nai_realm_eap *eap = &realm->eap[e];
710 if (cred->password && cred->password[0] &&
711 nai_realm_cred_username(wpa_s, eap))
713 if (cred->private_key && cred->private_key[0] &&
714 nai_realm_cred_cert(wpa_s, eap))
722 #ifdef INTERWORKING_3GPP
724 static int plmn_id_match(struct wpabuf *anqp, const char *imsi, int mnc_len)
726 u8 plmn[3], plmn2[3];
731 * See Annex A of 3GPP TS 24.234 v8.1.0 for description. The network
732 * operator is allowed to include only two digits of the MNC, so allow
733 * matches based on both two and three digit MNC assumptions. Since some
734 * SIM/USIM cards may not expose MNC length conveniently, we may be
735 * provided the default MNC length 3 here and as such, checking with MNC
736 * length 2 is justifiable even though 3GPP TS 24.234 does not mention
737 * that case. Anyway, MCC/MNC pair where both 2 and 3 digit MNC is used
738 * with otherwise matching values would not be good idea in general, so
739 * this should not result in selecting incorrect networks.
741 /* Match with 3 digit MNC */
742 plmn[0] = (imsi[0] - '0') | ((imsi[1] - '0') << 4);
743 plmn[1] = (imsi[2] - '0') | ((imsi[5] - '0') << 4);
744 plmn[2] = (imsi[3] - '0') | ((imsi[4] - '0') << 4);
745 /* Match with 2 digit MNC */
746 plmn2[0] = (imsi[0] - '0') | ((imsi[1] - '0') << 4);
747 plmn2[1] = (imsi[2] - '0') | 0xf0;
748 plmn2[2] = (imsi[3] - '0') | ((imsi[4] - '0') << 4);
752 pos = wpabuf_head_u8(anqp);
753 end = pos + wpabuf_len(anqp);
757 wpa_printf(MSG_DEBUG, "Unsupported GUD version 0x%x", *pos);
762 if (udhl > end - pos) {
763 wpa_printf(MSG_DEBUG, "Invalid UDHL");
768 wpa_printf(MSG_DEBUG, "Interworking: Matching against MCC/MNC alternatives: %02x:%02x:%02x or %02x:%02x:%02x (IMSI %s, MNC length %d)",
769 plmn[0], plmn[1], plmn[2], plmn2[0], plmn2[1], plmn2[2],
772 while (end - pos >= 2) {
781 if (iei == 0 && len > 0) {
784 wpa_hexdump(MSG_DEBUG, "Interworking: PLMN List information element",
787 for (i = 0; i < num; i++) {
790 if (os_memcmp(pos, plmn, 3) == 0 ||
791 os_memcmp(pos, plmn2, 3) == 0)
792 return 1; /* Found matching PLMN */
796 wpa_hexdump(MSG_DEBUG, "Interworking: Unrecognized 3GPP information element",
807 static int build_root_nai(char *nai, size_t nai_len, const char *imsi,
808 size_t mnc_len, char prefix)
810 const char *sep, *msin;
812 size_t msin_len, plmn_len;
815 * TS 23.003, Clause 14 (3GPP to WLAN Interworking)
817 * <aka:0|sim:1><IMSI>@wlan.mnc<MNC>.mcc<MCC>.3gppnetwork.org
818 * <MNC> is zero-padded to three digits in case two-digit MNC is used
821 if (imsi == NULL || os_strlen(imsi) > 16) {
822 wpa_printf(MSG_DEBUG, "No valid IMSI available");
825 sep = os_strchr(imsi, '-');
827 plmn_len = sep - imsi;
829 } else if (mnc_len && os_strlen(imsi) >= 3 + mnc_len) {
830 plmn_len = 3 + mnc_len;
831 msin = imsi + plmn_len;
834 if (plmn_len != 5 && plmn_len != 6)
836 msin_len = os_strlen(msin);
842 os_memcpy(pos, imsi, plmn_len);
844 os_memcpy(pos, msin, msin_len);
846 pos += os_snprintf(pos, end - pos, "@wlan.mnc");
856 os_snprintf(pos, end - pos, ".mcc%c%c%c.3gppnetwork.org",
857 imsi[0], imsi[1], imsi[2]);
863 static int set_root_nai(struct wpa_ssid *ssid, const char *imsi, char prefix)
866 if (build_root_nai(nai, sizeof(nai), imsi, 0, prefix) < 0)
868 return wpa_config_set_quoted(ssid, "identity", nai);
871 #endif /* INTERWORKING_3GPP */
874 static int already_connected(struct wpa_supplicant *wpa_s,
875 struct wpa_cred *cred, struct wpa_bss *bss)
877 struct wpa_ssid *ssid, *sel_ssid;
878 struct wpa_bss *selected;
880 if (wpa_s->wpa_state < WPA_ASSOCIATED || wpa_s->current_ssid == NULL)
883 ssid = wpa_s->current_ssid;
884 if (ssid->parent_cred != cred)
887 if (ssid->ssid_len != bss->ssid_len ||
888 os_memcmp(ssid->ssid, bss->ssid, bss->ssid_len) != 0)
892 selected = wpa_supplicant_pick_network(wpa_s, &sel_ssid);
893 if (selected && sel_ssid && sel_ssid->priority > ssid->priority)
894 return 0; /* higher priority network in scan results */
900 static void remove_duplicate_network(struct wpa_supplicant *wpa_s,
901 struct wpa_cred *cred,
904 struct wpa_ssid *ssid;
906 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
907 if (ssid->parent_cred != cred)
909 if (ssid->ssid_len != bss->ssid_len ||
910 os_memcmp(ssid->ssid, bss->ssid, bss->ssid_len) != 0)
919 wpa_printf(MSG_DEBUG, "Interworking: Remove duplicate network entry for the same credential");
921 if (ssid == wpa_s->current_ssid) {
922 wpa_sm_set_config(wpa_s->wpa, NULL);
923 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
924 wpa_s->own_disconnect_req = 1;
925 wpa_supplicant_deauthenticate(wpa_s,
926 WLAN_REASON_DEAUTH_LEAVING);
929 wpas_notify_network_removed(wpa_s, ssid);
930 wpa_config_remove_network(wpa_s->conf, ssid->id);
934 static int interworking_set_hs20_params(struct wpa_supplicant *wpa_s,
935 struct wpa_ssid *ssid)
937 const char *key_mgmt = NULL;
938 #ifdef CONFIG_IEEE80211R
940 struct wpa_driver_capa capa;
942 res = wpa_drv_get_capa(wpa_s, &capa);
943 if (res == 0 && capa.key_mgmt & WPA_DRIVER_CAPA_KEY_MGMT_FT) {
944 key_mgmt = wpa_s->conf->pmf != NO_MGMT_FRAME_PROTECTION ?
945 "WPA-EAP WPA-EAP-SHA256 FT-EAP" :
948 #endif /* CONFIG_IEEE80211R */
951 key_mgmt = wpa_s->conf->pmf != NO_MGMT_FRAME_PROTECTION ?
952 "WPA-EAP WPA-EAP-SHA256" : "WPA-EAP";
953 if (wpa_config_set(ssid, "key_mgmt", key_mgmt, 0) < 0 ||
954 wpa_config_set(ssid, "proto", "RSN", 0) < 0 ||
955 wpa_config_set(ssid, "pairwise", "CCMP", 0) < 0)
961 static int interworking_connect_3gpp(struct wpa_supplicant *wpa_s,
962 struct wpa_cred *cred,
963 struct wpa_bss *bss, int only_add)
965 #ifdef INTERWORKING_3GPP
966 struct wpa_ssid *ssid;
971 if (bss->anqp == NULL || bss->anqp->anqp_3gpp == NULL)
974 wpa_msg(wpa_s, MSG_DEBUG, "Interworking: Connect with " MACSTR
975 " (3GPP)", MAC2STR(bss->bssid));
977 if (already_connected(wpa_s, cred, bss)) {
978 wpa_msg(wpa_s, MSG_INFO, INTERWORKING_ALREADY_CONNECTED MACSTR,
979 MAC2STR(bss->bssid));
980 return wpa_s->current_ssid->id;
983 remove_duplicate_network(wpa_s, cred, bss);
985 ssid = wpa_config_add_network(wpa_s->conf);
988 ssid->parent_cred = cred;
990 wpas_notify_network_added(wpa_s, ssid);
991 wpa_config_set_network_defaults(ssid);
992 ssid->priority = cred->priority;
994 ssid->ssid = os_zalloc(bss->ssid_len + 1);
995 if (ssid->ssid == NULL)
997 os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
998 ssid->ssid_len = bss->ssid_len;
999 ssid->eap.sim_num = cred->sim_num;
1001 if (interworking_set_hs20_params(wpa_s, ssid) < 0)
1004 eap_type = EAP_TYPE_SIM;
1005 if (cred->pcsc && wpa_s->scard && scard_supports_umts(wpa_s->scard))
1006 eap_type = EAP_TYPE_AKA;
1007 if (cred->eap_method && cred->eap_method[0].vendor == EAP_VENDOR_IETF) {
1008 if (cred->eap_method[0].method == EAP_TYPE_SIM ||
1009 cred->eap_method[0].method == EAP_TYPE_AKA ||
1010 cred->eap_method[0].method == EAP_TYPE_AKA_PRIME)
1011 eap_type = cred->eap_method[0].method;
1017 res = wpa_config_set(ssid, "eap", "SIM", 0);
1021 res = wpa_config_set(ssid, "eap", "AKA", 0);
1023 case EAP_TYPE_AKA_PRIME:
1025 res = wpa_config_set(ssid, "eap", "AKA'", 0);
1032 wpa_msg(wpa_s, MSG_DEBUG,
1033 "Selected EAP method (%d) not supported", eap_type);
1037 if (!cred->pcsc && set_root_nai(ssid, cred->imsi, prefix) < 0) {
1038 wpa_msg(wpa_s, MSG_DEBUG, "Failed to set Root NAI");
1042 if (cred->milenage && cred->milenage[0]) {
1043 if (wpa_config_set_quoted(ssid, "password",
1044 cred->milenage) < 0)
1046 } else if (cred->pcsc) {
1047 if (wpa_config_set_quoted(ssid, "pcsc", "") < 0)
1049 if (wpa_s->conf->pcsc_pin &&
1050 wpa_config_set_quoted(ssid, "pin", wpa_s->conf->pcsc_pin)
1055 wpa_s->next_ssid = ssid;
1056 wpa_config_update_prio_list(wpa_s->conf);
1058 interworking_reconnect(wpa_s);
1063 wpas_notify_network_removed(wpa_s, ssid);
1064 wpa_config_remove_network(wpa_s->conf, ssid->id);
1065 #endif /* INTERWORKING_3GPP */
1070 static int roaming_consortium_element_match(const u8 *ie, const u8 *rc_id,
1073 const u8 *pos, *end;
1080 end = ie + 2 + ie[1];
1082 /* Roaming Consortium element:
1083 * Number of ANQP OIs
1084 * OI #1 and #2 lengths
1085 * OI #1, [OI #2], [OI #3]
1091 pos++; /* skip Number of ANQP OIs */
1093 if ((lens & 0x0f) + (lens >> 4) > end - pos)
1096 if ((lens & 0x0f) == rc_len && os_memcmp(pos, rc_id, rc_len) == 0)
1100 if ((lens >> 4) == rc_len && os_memcmp(pos, rc_id, rc_len) == 0)
1104 if (pos < end && (size_t) (end - pos) == rc_len &&
1105 os_memcmp(pos, rc_id, rc_len) == 0)
1112 static int roaming_consortium_anqp_match(const struct wpabuf *anqp,
1113 const u8 *rc_id, size_t rc_len)
1115 const u8 *pos, *end;
1121 pos = wpabuf_head(anqp);
1122 end = pos + wpabuf_len(anqp);
1124 /* Set of <OI Length, OI> duples */
1127 if (len > end - pos)
1129 if (len == rc_len && os_memcmp(pos, rc_id, rc_len) == 0)
1138 static int roaming_consortium_match(const u8 *ie, const struct wpabuf *anqp,
1139 const u8 *rc_id, size_t rc_len)
1141 return roaming_consortium_element_match(ie, rc_id, rc_len) ||
1142 roaming_consortium_anqp_match(anqp, rc_id, rc_len);
1146 static int cred_no_required_oi_match(struct wpa_cred *cred, struct wpa_bss *bss)
1150 if (cred->required_roaming_consortium_len == 0)
1153 ie = wpa_bss_get_ie(bss, WLAN_EID_ROAMING_CONSORTIUM);
1156 (bss->anqp == NULL || bss->anqp->roaming_consortium == NULL))
1159 return !roaming_consortium_match(ie,
1161 bss->anqp->roaming_consortium : NULL,
1162 cred->required_roaming_consortium,
1163 cred->required_roaming_consortium_len);
1167 static int cred_excluded_ssid(struct wpa_cred *cred, struct wpa_bss *bss)
1171 if (!cred->excluded_ssid)
1174 for (i = 0; i < cred->num_excluded_ssid; i++) {
1175 struct excluded_ssid *e = &cred->excluded_ssid[i];
1176 if (bss->ssid_len == e->ssid_len &&
1177 os_memcmp(bss->ssid, e->ssid, e->ssid_len) == 0)
1185 static int cred_below_min_backhaul(struct wpa_supplicant *wpa_s,
1186 struct wpa_cred *cred, struct wpa_bss *bss)
1190 unsigned int dl_bandwidth, ul_bandwidth;
1192 u8 wan_info, dl_load, ul_load;
1194 u32 ul_speed, dl_speed;
1196 if (!cred->min_dl_bandwidth_home &&
1197 !cred->min_ul_bandwidth_home &&
1198 !cred->min_dl_bandwidth_roaming &&
1199 !cred->min_ul_bandwidth_roaming)
1200 return 0; /* No bandwidth constraint specified */
1202 if (bss->anqp == NULL || bss->anqp->hs20_wan_metrics == NULL)
1203 return 0; /* No WAN Metrics known - ignore constraint */
1205 wan = wpabuf_head(bss->anqp->hs20_wan_metrics);
1207 if (wan_info & BIT(3))
1208 return 1; /* WAN link at capacity */
1209 lmd = WPA_GET_LE16(wan + 11);
1211 return 0; /* Downlink/Uplink Load was not measured */
1212 dl_speed = WPA_GET_LE32(wan + 1);
1213 ul_speed = WPA_GET_LE32(wan + 5);
1217 if (dl_speed >= 0xffffff)
1218 dl_bandwidth = dl_speed / 255 * (255 - dl_load);
1220 dl_bandwidth = dl_speed * (255 - dl_load) / 255;
1222 if (ul_speed >= 0xffffff)
1223 ul_bandwidth = ul_speed / 255 * (255 - ul_load);
1225 ul_bandwidth = ul_speed * (255 - ul_load) / 255;
1227 res = interworking_home_sp_cred(wpa_s, cred, bss->anqp ?
1228 bss->anqp->domain_name : NULL);
1230 if (cred->min_dl_bandwidth_home > dl_bandwidth)
1232 if (cred->min_ul_bandwidth_home > ul_bandwidth)
1235 if (cred->min_dl_bandwidth_roaming > dl_bandwidth)
1237 if (cred->min_ul_bandwidth_roaming > ul_bandwidth)
1240 #endif /* CONFIG_HS20 */
1246 static int cred_over_max_bss_load(struct wpa_supplicant *wpa_s,
1247 struct wpa_cred *cred, struct wpa_bss *bss)
1252 if (!cred->max_bss_load)
1253 return 0; /* No BSS Load constraint specified */
1255 ie = wpa_bss_get_ie(bss, WLAN_EID_BSS_LOAD);
1256 if (ie == NULL || ie[1] < 3)
1257 return 0; /* No BSS Load advertised */
1259 res = interworking_home_sp_cred(wpa_s, cred, bss->anqp ?
1260 bss->anqp->domain_name : NULL);
1262 return 0; /* Not a home network */
1264 return ie[4] > cred->max_bss_load;
1270 static int has_proto_match(const u8 *pos, const u8 *end, u8 proto)
1272 while (end - pos >= 4) {
1273 if (pos[0] == proto && pos[3] == 1 /* Open */)
1282 static int has_proto_port_match(const u8 *pos, const u8 *end, u8 proto,
1285 while (end - pos >= 4) {
1286 if (pos[0] == proto && WPA_GET_LE16(&pos[1]) == port &&
1287 pos[3] == 1 /* Open */)
1295 #endif /* CONFIG_HS20 */
1298 static int cred_conn_capab_missing(struct wpa_supplicant *wpa_s,
1299 struct wpa_cred *cred, struct wpa_bss *bss)
1303 const u8 *capab, *end;
1307 if (!cred->num_req_conn_capab)
1308 return 0; /* No connection capability constraint specified */
1310 if (bss->anqp == NULL || bss->anqp->hs20_connection_capability == NULL)
1311 return 0; /* No Connection Capability known - ignore constraint
1314 res = interworking_home_sp_cred(wpa_s, cred, bss->anqp ?
1315 bss->anqp->domain_name : NULL);
1317 return 0; /* No constraint in home network */
1319 capab = wpabuf_head(bss->anqp->hs20_connection_capability);
1320 end = capab + wpabuf_len(bss->anqp->hs20_connection_capability);
1322 for (i = 0; i < cred->num_req_conn_capab; i++) {
1323 ports = cred->req_conn_capab_port[i];
1325 if (!has_proto_match(capab, end,
1326 cred->req_conn_capab_proto[i]))
1329 for (j = 0; ports[j] > -1; j++) {
1330 if (!has_proto_port_match(
1332 cred->req_conn_capab_proto[i],
1338 #endif /* CONFIG_HS20 */
1344 static struct wpa_cred * interworking_credentials_available_roaming_consortium(
1345 struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw,
1348 struct wpa_cred *cred, *selected = NULL;
1350 int is_excluded = 0;
1352 ie = wpa_bss_get_ie(bss, WLAN_EID_ROAMING_CONSORTIUM);
1355 (bss->anqp == NULL || bss->anqp->roaming_consortium == NULL))
1358 if (wpa_s->conf->cred == NULL)
1361 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
1362 if (cred->roaming_consortium_len == 0)
1365 if (!roaming_consortium_match(ie,
1367 bss->anqp->roaming_consortium :
1369 cred->roaming_consortium,
1370 cred->roaming_consortium_len))
1373 if (cred_no_required_oi_match(cred, bss))
1375 if (!ignore_bw && cred_below_min_backhaul(wpa_s, cred, bss))
1377 if (!ignore_bw && cred_over_max_bss_load(wpa_s, cred, bss))
1379 if (!ignore_bw && cred_conn_capab_missing(wpa_s, cred, bss))
1381 if (cred_excluded_ssid(cred, bss)) {
1382 if (excluded == NULL)
1384 if (selected == NULL) {
1389 if (selected == NULL || is_excluded ||
1390 cred_prio_cmp(selected, cred) < 0) {
1398 *excluded = is_excluded;
1404 static int interworking_set_eap_params(struct wpa_ssid *ssid,
1405 struct wpa_cred *cred, int ttls)
1407 if (cred->eap_method) {
1408 ttls = cred->eap_method->vendor == EAP_VENDOR_IETF &&
1409 cred->eap_method->method == EAP_TYPE_TTLS;
1411 os_free(ssid->eap.eap_methods);
1412 ssid->eap.eap_methods =
1413 os_malloc(sizeof(struct eap_method_type) * 2);
1414 if (ssid->eap.eap_methods == NULL)
1416 os_memcpy(ssid->eap.eap_methods, cred->eap_method,
1417 sizeof(*cred->eap_method));
1418 ssid->eap.eap_methods[1].vendor = EAP_VENDOR_IETF;
1419 ssid->eap.eap_methods[1].method = EAP_TYPE_NONE;
1422 if (ttls && cred->username && cred->username[0]) {
1425 /* Use anonymous NAI in Phase 1 */
1426 pos = os_strchr(cred->username, '@');
1428 size_t buflen = 9 + os_strlen(pos) + 1;
1429 anon = os_malloc(buflen);
1432 os_snprintf(anon, buflen, "anonymous%s", pos);
1433 } else if (cred->realm) {
1434 size_t buflen = 10 + os_strlen(cred->realm) + 1;
1435 anon = os_malloc(buflen);
1438 os_snprintf(anon, buflen, "anonymous@%s", cred->realm);
1440 anon = os_strdup("anonymous");
1444 if (wpa_config_set_quoted(ssid, "anonymous_identity", anon) <
1452 if (!ttls && cred->username && cred->username[0] && cred->realm &&
1453 !os_strchr(cred->username, '@')) {
1458 buflen = os_strlen(cred->username) + 1 +
1459 os_strlen(cred->realm) + 1;
1461 id = os_malloc(buflen);
1464 os_snprintf(id, buflen, "%s@%s", cred->username, cred->realm);
1465 res = wpa_config_set_quoted(ssid, "identity", id);
1469 } else if (cred->username && cred->username[0] &&
1470 wpa_config_set_quoted(ssid, "identity", cred->username) < 0)
1473 if (cred->password && cred->password[0]) {
1474 if (cred->ext_password &&
1475 wpa_config_set(ssid, "password", cred->password, 0) < 0)
1477 if (!cred->ext_password &&
1478 wpa_config_set_quoted(ssid, "password", cred->password) <
1483 if (cred->client_cert && cred->client_cert[0] &&
1484 wpa_config_set_quoted(ssid, "client_cert", cred->client_cert) < 0)
1488 if (cred->private_key &&
1489 os_strncmp(cred->private_key, "keystore://", 11) == 0) {
1490 /* Use OpenSSL engine configuration for Android keystore */
1491 if (wpa_config_set_quoted(ssid, "engine_id", "keystore") < 0 ||
1492 wpa_config_set_quoted(ssid, "key_id",
1493 cred->private_key + 11) < 0 ||
1494 wpa_config_set(ssid, "engine", "1", 0) < 0)
1497 #endif /* ANDROID */
1498 if (cred->private_key && cred->private_key[0] &&
1499 wpa_config_set_quoted(ssid, "private_key", cred->private_key) < 0)
1502 if (cred->private_key_passwd && cred->private_key_passwd[0] &&
1503 wpa_config_set_quoted(ssid, "private_key_passwd",
1504 cred->private_key_passwd) < 0)
1508 os_free(ssid->eap.phase1);
1509 ssid->eap.phase1 = os_strdup(cred->phase1);
1512 os_free(ssid->eap.phase2);
1513 ssid->eap.phase2 = os_strdup(cred->phase2);
1516 if (cred->ca_cert && cred->ca_cert[0] &&
1517 wpa_config_set_quoted(ssid, "ca_cert", cred->ca_cert) < 0)
1520 if (cred->domain_suffix_match && cred->domain_suffix_match[0] &&
1521 wpa_config_set_quoted(ssid, "domain_suffix_match",
1522 cred->domain_suffix_match) < 0)
1525 ssid->eap.ocsp = cred->ocsp;
1531 static int interworking_connect_roaming_consortium(
1532 struct wpa_supplicant *wpa_s, struct wpa_cred *cred,
1533 struct wpa_bss *bss, int only_add)
1535 struct wpa_ssid *ssid;
1537 wpa_msg(wpa_s, MSG_DEBUG, "Interworking: Connect with " MACSTR
1538 " based on roaming consortium match", MAC2STR(bss->bssid));
1540 if (already_connected(wpa_s, cred, bss)) {
1541 wpa_msg(wpa_s, MSG_INFO, INTERWORKING_ALREADY_CONNECTED MACSTR,
1542 MAC2STR(bss->bssid));
1543 return wpa_s->current_ssid->id;
1546 remove_duplicate_network(wpa_s, cred, bss);
1548 ssid = wpa_config_add_network(wpa_s->conf);
1551 ssid->parent_cred = cred;
1552 wpas_notify_network_added(wpa_s, ssid);
1553 wpa_config_set_network_defaults(ssid);
1554 ssid->priority = cred->priority;
1555 ssid->temporary = 1;
1556 ssid->ssid = os_zalloc(bss->ssid_len + 1);
1557 if (ssid->ssid == NULL)
1559 os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
1560 ssid->ssid_len = bss->ssid_len;
1562 if (interworking_set_hs20_params(wpa_s, ssid) < 0)
1565 if (cred->eap_method == NULL) {
1566 wpa_msg(wpa_s, MSG_DEBUG,
1567 "Interworking: No EAP method set for credential using roaming consortium");
1571 if (interworking_set_eap_params(
1573 cred->eap_method->vendor == EAP_VENDOR_IETF &&
1574 cred->eap_method->method == EAP_TYPE_TTLS) < 0)
1577 wpa_s->next_ssid = ssid;
1578 wpa_config_update_prio_list(wpa_s->conf);
1580 interworking_reconnect(wpa_s);
1585 wpas_notify_network_removed(wpa_s, ssid);
1586 wpa_config_remove_network(wpa_s->conf, ssid->id);
1591 int interworking_connect(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
1594 struct wpa_cred *cred, *cred_rc, *cred_3gpp;
1595 struct wpa_ssid *ssid;
1596 struct nai_realm *realm;
1597 struct nai_realm_eap *eap = NULL;
1600 int excluded = 0, *excl = &excluded;
1603 if (wpa_s->conf->cred == NULL || bss == NULL)
1605 if (disallowed_bssid(wpa_s, bss->bssid) ||
1606 disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len)) {
1607 wpa_msg(wpa_s, MSG_DEBUG,
1608 "Interworking: Reject connection to disallowed BSS "
1609 MACSTR, MAC2STR(bss->bssid));
1613 wpa_printf(MSG_DEBUG, "Interworking: Considering BSS " MACSTR
1615 MAC2STR(bss->bssid));
1617 if (!wpa_bss_get_ie(bss, WLAN_EID_RSN)) {
1619 * We currently support only HS 2.0 networks and those are
1620 * required to use WPA2-Enterprise.
1622 wpa_msg(wpa_s, MSG_DEBUG,
1623 "Interworking: Network does not use RSN");
1627 cred_rc = interworking_credentials_available_roaming_consortium(
1628 wpa_s, bss, 0, excl);
1630 wpa_msg(wpa_s, MSG_DEBUG,
1631 "Interworking: Highest roaming consortium matching credential priority %d sp_priority %d",
1632 cred_rc->priority, cred_rc->sp_priority);
1633 if (excl && !(*excl))
1637 cred = interworking_credentials_available_realm(wpa_s, bss, 0, excl);
1639 wpa_msg(wpa_s, MSG_DEBUG,
1640 "Interworking: Highest NAI Realm list matching credential priority %d sp_priority %d",
1641 cred->priority, cred->sp_priority);
1642 if (excl && !(*excl))
1646 cred_3gpp = interworking_credentials_available_3gpp(wpa_s, bss, 0,
1649 wpa_msg(wpa_s, MSG_DEBUG,
1650 "Interworking: Highest 3GPP matching credential priority %d sp_priority %d",
1651 cred_3gpp->priority, cred_3gpp->sp_priority);
1652 if (excl && !(*excl))
1656 if (!cred_rc && !cred && !cred_3gpp) {
1657 wpa_msg(wpa_s, MSG_DEBUG,
1658 "Interworking: No full credential matches - consider options without BW(etc.) limits");
1659 cred_rc = interworking_credentials_available_roaming_consortium(
1660 wpa_s, bss, 1, excl);
1662 wpa_msg(wpa_s, MSG_DEBUG,
1663 "Interworking: Highest roaming consortium matching credential priority %d sp_priority %d (ignore BW)",
1664 cred_rc->priority, cred_rc->sp_priority);
1665 if (excl && !(*excl))
1669 cred = interworking_credentials_available_realm(wpa_s, bss, 1,
1672 wpa_msg(wpa_s, MSG_DEBUG,
1673 "Interworking: Highest NAI Realm list matching credential priority %d sp_priority %d (ignore BW)",
1674 cred->priority, cred->sp_priority);
1675 if (excl && !(*excl))
1679 cred_3gpp = interworking_credentials_available_3gpp(wpa_s, bss,
1682 wpa_msg(wpa_s, MSG_DEBUG,
1683 "Interworking: Highest 3GPP matching credential priority %d sp_priority %d (ignore BW)",
1684 cred_3gpp->priority, cred_3gpp->sp_priority);
1685 if (excl && !(*excl))
1691 (cred == NULL || cred_prio_cmp(cred_rc, cred) >= 0) &&
1692 (cred_3gpp == NULL || cred_prio_cmp(cred_rc, cred_3gpp) >= 0))
1693 return interworking_connect_roaming_consortium(wpa_s, cred_rc,
1697 (cred == NULL || cred_prio_cmp(cred_3gpp, cred) >= 0)) {
1698 return interworking_connect_3gpp(wpa_s, cred_3gpp, bss,
1703 wpa_msg(wpa_s, MSG_DEBUG,
1704 "Interworking: No matching credentials found for "
1705 MACSTR, MAC2STR(bss->bssid));
1709 realm = nai_realm_parse(bss->anqp ? bss->anqp->nai_realm : NULL,
1711 if (realm == NULL) {
1712 wpa_msg(wpa_s, MSG_DEBUG,
1713 "Interworking: Could not parse NAI Realm list from "
1714 MACSTR, MAC2STR(bss->bssid));
1718 for (i = 0; i < count; i++) {
1719 if (!nai_realm_match(&realm[i], cred->realm))
1721 eap = nai_realm_find_eap(wpa_s, cred, &realm[i]);
1727 wpa_msg(wpa_s, MSG_DEBUG,
1728 "Interworking: No matching credentials and EAP method found for "
1729 MACSTR, MAC2STR(bss->bssid));
1730 nai_realm_free(realm, count);
1734 wpa_msg(wpa_s, MSG_DEBUG, "Interworking: Connect with " MACSTR,
1735 MAC2STR(bss->bssid));
1737 if (already_connected(wpa_s, cred, bss)) {
1738 wpa_msg(wpa_s, MSG_INFO, INTERWORKING_ALREADY_CONNECTED MACSTR,
1739 MAC2STR(bss->bssid));
1740 nai_realm_free(realm, count);
1744 remove_duplicate_network(wpa_s, cred, bss);
1746 ssid = wpa_config_add_network(wpa_s->conf);
1748 nai_realm_free(realm, count);
1751 ssid->parent_cred = cred;
1752 wpas_notify_network_added(wpa_s, ssid);
1753 wpa_config_set_network_defaults(ssid);
1754 ssid->priority = cred->priority;
1755 ssid->temporary = 1;
1756 ssid->ssid = os_zalloc(bss->ssid_len + 1);
1757 if (ssid->ssid == NULL)
1759 os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
1760 ssid->ssid_len = bss->ssid_len;
1762 if (interworking_set_hs20_params(wpa_s, ssid) < 0)
1765 if (wpa_config_set(ssid, "eap", eap_get_name(EAP_VENDOR_IETF,
1766 eap->method), 0) < 0)
1769 switch (eap->method) {
1771 if (eap->inner_method) {
1772 os_snprintf(buf, sizeof(buf), "\"autheap=%s\"",
1773 eap_get_name(EAP_VENDOR_IETF,
1774 eap->inner_method));
1775 if (wpa_config_set(ssid, "phase2", buf, 0) < 0)
1779 switch (eap->inner_non_eap) {
1780 case NAI_REALM_INNER_NON_EAP_PAP:
1781 if (wpa_config_set(ssid, "phase2", "\"auth=PAP\"", 0) <
1785 case NAI_REALM_INNER_NON_EAP_CHAP:
1786 if (wpa_config_set(ssid, "phase2", "\"auth=CHAP\"", 0)
1790 case NAI_REALM_INNER_NON_EAP_MSCHAP:
1791 if (wpa_config_set(ssid, "phase2", "\"auth=MSCHAP\"",
1795 case NAI_REALM_INNER_NON_EAP_MSCHAPV2:
1796 if (wpa_config_set(ssid, "phase2", "\"auth=MSCHAPV2\"",
1801 /* EAP params were not set - assume TTLS/MSCHAPv2 */
1802 if (wpa_config_set(ssid, "phase2", "\"auth=MSCHAPV2\"",
1810 if (wpa_config_set(ssid, "phase1", "\"fast_provisioning=2\"",
1813 if (wpa_config_set(ssid, "pac_file",
1814 "\"blob://pac_interworking\"", 0) < 0)
1816 name = eap_get_name(EAP_VENDOR_IETF,
1817 eap->inner_method ? eap->inner_method :
1821 os_snprintf(buf, sizeof(buf), "\"auth=%s\"", name);
1822 if (wpa_config_set(ssid, "phase2", buf, 0) < 0)
1829 if (interworking_set_eap_params(ssid, cred,
1830 eap->method == EAP_TYPE_TTLS) < 0)
1833 nai_realm_free(realm, count);
1835 wpa_s->next_ssid = ssid;
1836 wpa_config_update_prio_list(wpa_s->conf);
1838 interworking_reconnect(wpa_s);
1843 wpas_notify_network_removed(wpa_s, ssid);
1844 wpa_config_remove_network(wpa_s->conf, ssid->id);
1845 nai_realm_free(realm, count);
1851 static int interworking_pcsc_read_imsi(struct wpa_supplicant *wpa_s)
1855 if (wpa_s->imsi[0] && wpa_s->mnc_len)
1858 len = sizeof(wpa_s->imsi) - 1;
1859 if (scard_get_imsi(wpa_s->scard, wpa_s->imsi, &len)) {
1860 scard_deinit(wpa_s->scard);
1861 wpa_s->scard = NULL;
1862 wpa_msg(wpa_s, MSG_ERROR, "Could not read IMSI");
1865 wpa_s->imsi[len] = '\0';
1866 wpa_s->mnc_len = scard_get_mnc_len(wpa_s->scard);
1867 wpa_printf(MSG_DEBUG, "SCARD: IMSI %s (MNC length %d)",
1868 wpa_s->imsi, wpa_s->mnc_len);
1872 #endif /* PCSC_FUNCS */
1875 static struct wpa_cred * interworking_credentials_available_3gpp(
1876 struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw,
1879 struct wpa_cred *selected = NULL;
1880 #ifdef INTERWORKING_3GPP
1881 struct wpa_cred *cred;
1883 int is_excluded = 0;
1885 if (bss->anqp == NULL || bss->anqp->anqp_3gpp == NULL) {
1886 wpa_msg(wpa_s, MSG_DEBUG,
1887 "interworking-avail-3gpp: not avail, anqp: %p anqp_3gpp: %p",
1888 bss->anqp, bss->anqp ? bss->anqp->anqp_3gpp : NULL);
1892 #ifdef CONFIG_EAP_PROXY
1893 if (!wpa_s->imsi[0]) {
1895 wpa_msg(wpa_s, MSG_DEBUG,
1896 "Interworking: IMSI not available - try to read again through eap_proxy");
1897 wpa_s->mnc_len = eapol_sm_get_eap_proxy_imsi(wpa_s->eapol,
1900 if (wpa_s->mnc_len > 0) {
1901 wpa_s->imsi[len] = '\0';
1902 wpa_msg(wpa_s, MSG_DEBUG,
1903 "eap_proxy: IMSI %s (MNC length %d)",
1904 wpa_s->imsi, wpa_s->mnc_len);
1906 wpa_msg(wpa_s, MSG_DEBUG,
1907 "eap_proxy: IMSI not available");
1910 #endif /* CONFIG_EAP_PROXY */
1912 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
1920 if (cred->pcsc && wpa_s->scard) {
1921 if (interworking_pcsc_read_imsi(wpa_s) < 0)
1924 mnc_len = wpa_s->mnc_len;
1927 #endif /* PCSC_FUNCS */
1928 #ifdef CONFIG_EAP_PROXY
1929 if (cred->pcsc && wpa_s->mnc_len > 0 && wpa_s->imsi[0]) {
1931 mnc_len = wpa_s->mnc_len;
1934 #endif /* CONFIG_EAP_PROXY */
1936 if (cred->imsi == NULL || !cred->imsi[0] ||
1937 (!wpa_s->conf->external_sim &&
1938 (cred->milenage == NULL || !cred->milenage[0])))
1941 sep = os_strchr(cred->imsi, '-');
1943 (sep - cred->imsi != 5 && sep - cred->imsi != 6))
1945 mnc_len = sep - cred->imsi - 3;
1946 os_memcpy(imsi_buf, cred->imsi, 3 + mnc_len);
1948 msin_len = os_strlen(cred->imsi);
1949 if (3 + mnc_len + msin_len >= sizeof(imsi_buf) - 1)
1950 msin_len = sizeof(imsi_buf) - 3 - mnc_len - 1;
1951 os_memcpy(&imsi_buf[3 + mnc_len], sep, msin_len);
1952 imsi_buf[3 + mnc_len + msin_len] = '\0';
1955 #if defined(PCSC_FUNCS) || defined(CONFIG_EAP_PROXY)
1957 #endif /* PCSC_FUNCS || CONFIG_EAP_PROXY */
1958 wpa_msg(wpa_s, MSG_DEBUG,
1959 "Interworking: Parsing 3GPP info from " MACSTR,
1960 MAC2STR(bss->bssid));
1961 ret = plmn_id_match(bss->anqp->anqp_3gpp, imsi, mnc_len);
1962 wpa_msg(wpa_s, MSG_DEBUG, "PLMN match %sfound",
1965 if (cred_no_required_oi_match(cred, bss))
1968 cred_below_min_backhaul(wpa_s, cred, bss))
1971 cred_over_max_bss_load(wpa_s, cred, bss))
1974 cred_conn_capab_missing(wpa_s, cred, bss))
1976 if (cred_excluded_ssid(cred, bss)) {
1977 if (excluded == NULL)
1979 if (selected == NULL) {
1984 if (selected == NULL || is_excluded ||
1985 cred_prio_cmp(selected, cred) < 0) {
1994 *excluded = is_excluded;
1995 #endif /* INTERWORKING_3GPP */
2000 static struct wpa_cred * interworking_credentials_available_realm(
2001 struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw,
2004 struct wpa_cred *cred, *selected = NULL;
2005 struct nai_realm *realm;
2007 int is_excluded = 0;
2009 if (bss->anqp == NULL || bss->anqp->nai_realm == NULL)
2012 if (wpa_s->conf->cred == NULL)
2015 wpa_msg(wpa_s, MSG_DEBUG, "Interworking: Parsing NAI Realm list from "
2016 MACSTR, MAC2STR(bss->bssid));
2017 realm = nai_realm_parse(bss->anqp->nai_realm, &count);
2018 if (realm == NULL) {
2019 wpa_msg(wpa_s, MSG_DEBUG,
2020 "Interworking: Could not parse NAI Realm list from "
2021 MACSTR, MAC2STR(bss->bssid));
2025 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
2026 if (cred->realm == NULL)
2029 for (i = 0; i < count; i++) {
2030 if (!nai_realm_match(&realm[i], cred->realm))
2032 if (nai_realm_find_eap(wpa_s, cred, &realm[i])) {
2033 if (cred_no_required_oi_match(cred, bss))
2036 cred_below_min_backhaul(wpa_s, cred, bss))
2039 cred_over_max_bss_load(wpa_s, cred, bss))
2042 cred_conn_capab_missing(wpa_s, cred, bss))
2044 if (cred_excluded_ssid(cred, bss)) {
2045 if (excluded == NULL)
2047 if (selected == NULL) {
2052 if (selected == NULL || is_excluded ||
2053 cred_prio_cmp(selected, cred) < 0)
2061 wpa_msg(wpa_s, MSG_DEBUG,
2062 "Interworking: realm-find-eap returned false");
2067 nai_realm_free(realm, count);
2070 *excluded = is_excluded;
2076 static struct wpa_cred * interworking_credentials_available_helper(
2077 struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw,
2080 struct wpa_cred *cred, *cred2;
2081 int excluded1, excluded2 = 0;
2083 if (disallowed_bssid(wpa_s, bss->bssid) ||
2084 disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len)) {
2085 wpa_printf(MSG_DEBUG, "Interworking: Ignore disallowed BSS "
2086 MACSTR, MAC2STR(bss->bssid));
2090 cred = interworking_credentials_available_realm(wpa_s, bss, ignore_bw,
2092 cred2 = interworking_credentials_available_3gpp(wpa_s, bss, ignore_bw,
2094 if (cred && cred2 &&
2095 (cred_prio_cmp(cred2, cred) >= 0 || (!excluded2 && excluded1))) {
2097 excluded1 = excluded2;
2101 excluded1 = excluded2;
2104 cred2 = interworking_credentials_available_roaming_consortium(
2105 wpa_s, bss, ignore_bw, &excluded2);
2106 if (cred && cred2 &&
2107 (cred_prio_cmp(cred2, cred) >= 0 || (!excluded2 && excluded1))) {
2109 excluded1 = excluded2;
2113 excluded1 = excluded2;
2117 *excluded = excluded1;
2122 static struct wpa_cred * interworking_credentials_available(
2123 struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int *excluded)
2125 struct wpa_cred *cred;
2129 cred = interworking_credentials_available_helper(wpa_s, bss, 0,
2133 return interworking_credentials_available_helper(wpa_s, bss, 1,
2138 int domain_name_list_contains(struct wpabuf *domain_names,
2139 const char *domain, int exact_match)
2141 const u8 *pos, *end;
2144 len = os_strlen(domain);
2145 pos = wpabuf_head(domain_names);
2146 end = pos + wpabuf_len(domain_names);
2148 while (end - pos > 1) {
2152 if (elen > end - pos)
2155 wpa_hexdump_ascii(MSG_DEBUG, "Interworking: AP domain name",
2158 os_strncasecmp(domain, (const char *) pos, len) == 0)
2160 if (!exact_match && elen > len && pos[elen - len - 1] == '.') {
2161 const char *ap = (const char *) pos;
2162 int offset = elen - len;
2164 if (os_strncasecmp(domain, ap + offset, len) == 0)
2175 int interworking_home_sp_cred(struct wpa_supplicant *wpa_s,
2176 struct wpa_cred *cred,
2177 struct wpabuf *domain_names)
2181 #ifdef INTERWORKING_3GPP
2182 char nai[100], *realm;
2189 else if (cred->pcsc && wpa_s->scard) {
2190 if (interworking_pcsc_read_imsi(wpa_s) < 0)
2193 mnc_len = wpa_s->mnc_len;
2195 #endif /* PCSC_FUNCS */
2196 #ifdef CONFIG_EAP_PROXY
2197 else if (cred->pcsc && wpa_s->mnc_len > 0 && wpa_s->imsi[0]) {
2199 mnc_len = wpa_s->mnc_len;
2201 #endif /* CONFIG_EAP_PROXY */
2203 imsi && build_root_nai(nai, sizeof(nai), imsi, mnc_len, 0) == 0) {
2204 realm = os_strchr(nai, '@');
2207 wpa_msg(wpa_s, MSG_DEBUG,
2208 "Interworking: Search for match with SIM/USIM domain %s",
2211 domain_name_list_contains(domain_names, realm, 1))
2216 #endif /* INTERWORKING_3GPP */
2218 if (domain_names == NULL || cred->domain == NULL)
2221 for (i = 0; i < cred->num_domain; i++) {
2222 wpa_msg(wpa_s, MSG_DEBUG,
2223 "Interworking: Search for match with home SP FQDN %s",
2225 if (domain_name_list_contains(domain_names, cred->domain[i], 1))
2233 static int interworking_home_sp(struct wpa_supplicant *wpa_s,
2234 struct wpabuf *domain_names)
2236 struct wpa_cred *cred;
2238 if (domain_names == NULL || wpa_s->conf->cred == NULL)
2241 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
2242 int res = interworking_home_sp_cred(wpa_s, cred, domain_names);
2251 static int interworking_find_network_match(struct wpa_supplicant *wpa_s)
2253 struct wpa_bss *bss;
2254 struct wpa_ssid *ssid;
2256 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
2257 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
2258 if (wpas_network_disabled(wpa_s, ssid) ||
2259 ssid->mode != WPAS_MODE_INFRA)
2261 if (ssid->ssid_len != bss->ssid_len ||
2262 os_memcmp(ssid->ssid, bss->ssid, ssid->ssid_len) !=
2266 * TODO: Consider more accurate matching of security
2267 * configuration similarly to what is done in events.c
2277 static int roaming_partner_match(struct wpa_supplicant *wpa_s,
2278 struct roaming_partner *partner,
2279 struct wpabuf *domain_names)
2281 wpa_printf(MSG_DEBUG, "Interworking: Comparing roaming_partner info fqdn='%s' exact_match=%d priority=%u country='%s'",
2282 partner->fqdn, partner->exact_match, partner->priority,
2284 wpa_hexdump_ascii(MSG_DEBUG, "Interworking: Domain names",
2285 wpabuf_head(domain_names),
2286 wpabuf_len(domain_names));
2287 if (!domain_name_list_contains(domain_names, partner->fqdn,
2288 partner->exact_match))
2290 /* TODO: match Country */
2295 static u8 roaming_prio(struct wpa_supplicant *wpa_s, struct wpa_cred *cred,
2296 struct wpa_bss *bss)
2300 if (bss->anqp == NULL || bss->anqp->domain_name == NULL) {
2301 wpa_printf(MSG_DEBUG, "Interworking: No ANQP domain name info -> use default roaming partner priority 128");
2302 return 128; /* cannot check preference with domain name */
2305 if (interworking_home_sp_cred(wpa_s, cred, bss->anqp->domain_name) > 0)
2307 wpa_printf(MSG_DEBUG, "Interworking: Determined to be home SP -> use maximum preference 0 as roaming partner priority");
2308 return 0; /* max preference for home SP network */
2311 for (i = 0; i < cred->num_roaming_partner; i++) {
2312 if (roaming_partner_match(wpa_s, &cred->roaming_partner[i],
2313 bss->anqp->domain_name)) {
2314 wpa_printf(MSG_DEBUG, "Interworking: Roaming partner preference match - priority %u",
2315 cred->roaming_partner[i].priority);
2316 return cred->roaming_partner[i].priority;
2320 wpa_printf(MSG_DEBUG, "Interworking: No roaming partner preference match - use default roaming partner priority 128");
2325 static struct wpa_bss * pick_best_roaming_partner(struct wpa_supplicant *wpa_s,
2326 struct wpa_bss *selected,
2327 struct wpa_cred *cred)
2329 struct wpa_bss *bss;
2331 struct wpa_cred *cred2;
2334 * Check if any other BSS is operated by a more preferred roaming
2338 best_prio = roaming_prio(wpa_s, cred, selected);
2339 wpa_printf(MSG_DEBUG, "Interworking: roaming_prio=%u for selected BSS "
2340 MACSTR " (cred=%d)", best_prio, MAC2STR(selected->bssid),
2343 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
2344 if (bss == selected)
2346 cred2 = interworking_credentials_available(wpa_s, bss, NULL);
2349 if (!wpa_bss_get_ie(bss, WLAN_EID_RSN))
2351 prio = roaming_prio(wpa_s, cred2, bss);
2352 wpa_printf(MSG_DEBUG, "Interworking: roaming_prio=%u for BSS "
2353 MACSTR " (cred=%d)", prio, MAC2STR(bss->bssid),
2355 if (prio < best_prio) {
2356 int bh1, bh2, load1, load2, conn1, conn2;
2357 bh1 = cred_below_min_backhaul(wpa_s, cred, selected);
2358 load1 = cred_over_max_bss_load(wpa_s, cred, selected);
2359 conn1 = cred_conn_capab_missing(wpa_s, cred, selected);
2360 bh2 = cred_below_min_backhaul(wpa_s, cred2, bss);
2361 load2 = cred_over_max_bss_load(wpa_s, cred2, bss);
2362 conn2 = cred_conn_capab_missing(wpa_s, cred2, bss);
2363 wpa_printf(MSG_DEBUG, "Interworking: old: %d %d %d new: %d %d %d",
2364 bh1, load1, conn1, bh2, load2, conn2);
2365 if (bh1 || load1 || conn1 || !(bh2 || load2 || conn2)) {
2366 wpa_printf(MSG_DEBUG, "Interworking: Better roaming partner " MACSTR " selected", MAC2STR(bss->bssid));
2377 static void interworking_select_network(struct wpa_supplicant *wpa_s)
2379 struct wpa_bss *bss, *selected = NULL, *selected_home = NULL;
2380 struct wpa_bss *selected2 = NULL, *selected2_home = NULL;
2381 unsigned int count = 0;
2384 struct wpa_cred *cred, *selected_cred = NULL;
2385 struct wpa_cred *selected_home_cred = NULL;
2386 struct wpa_cred *selected2_cred = NULL;
2387 struct wpa_cred *selected2_home_cred = NULL;
2389 wpa_s->network_select = 0;
2391 wpa_printf(MSG_DEBUG, "Interworking: Select network (auto_select=%d)",
2392 wpa_s->auto_select);
2393 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
2395 int bh, bss_load, conn_capab;
2396 cred = interworking_credentials_available(wpa_s, bss,
2401 if (!wpa_bss_get_ie(bss, WLAN_EID_RSN)) {
2403 * We currently support only HS 2.0 networks and those
2404 * are required to use WPA2-Enterprise.
2406 wpa_msg(wpa_s, MSG_DEBUG,
2407 "Interworking: Credential match with " MACSTR
2408 " but network does not use RSN",
2409 MAC2STR(bss->bssid));
2414 res = interworking_home_sp(wpa_s, bss->anqp ?
2415 bss->anqp->domain_name : NULL);
2422 bh = cred_below_min_backhaul(wpa_s, cred, bss);
2423 bss_load = cred_over_max_bss_load(wpa_s, cred, bss);
2424 conn_capab = cred_conn_capab_missing(wpa_s, cred, bss);
2425 wpa_msg(wpa_s, MSG_INFO, "%s" MACSTR " type=%s%s%s%s id=%d priority=%d sp_priority=%d",
2426 excluded ? INTERWORKING_BLACKLISTED : INTERWORKING_AP,
2427 MAC2STR(bss->bssid), type,
2428 bh ? " below_min_backhaul=1" : "",
2429 bss_load ? " over_max_bss_load=1" : "",
2430 conn_capab ? " conn_capab_missing=1" : "",
2431 cred->id, cred->priority, cred->sp_priority);
2434 if (wpa_s->auto_select ||
2435 (wpa_s->conf->auto_interworking &&
2436 wpa_s->auto_network_select)) {
2437 if (bh || bss_load || conn_capab) {
2438 if (selected2_cred == NULL ||
2439 cred_prio_cmp(cred, selected2_cred) > 0) {
2440 wpa_printf(MSG_DEBUG, "Interworking: Mark as selected2");
2442 selected2_cred = cred;
2445 (selected2_home_cred == NULL ||
2446 cred_prio_cmp(cred, selected2_home_cred) >
2448 wpa_printf(MSG_DEBUG, "Interworking: Mark as selected2_home");
2449 selected2_home = bss;
2450 selected2_home_cred = cred;
2453 if (selected_cred == NULL ||
2454 cred_prio_cmp(cred, selected_cred) > 0) {
2455 wpa_printf(MSG_DEBUG, "Interworking: Mark as selected");
2457 selected_cred = cred;
2460 (selected_home_cred == NULL ||
2461 cred_prio_cmp(cred, selected_home_cred) >
2463 wpa_printf(MSG_DEBUG, "Interworking: Mark as selected_home");
2464 selected_home = bss;
2465 selected_home_cred = cred;
2471 if (selected_home && selected_home != selected &&
2472 selected_home_cred &&
2473 (selected_cred == NULL ||
2474 cred_prio_cmp(selected_home_cred, selected_cred) >= 0)) {
2475 /* Prefer network operated by the Home SP */
2476 wpa_printf(MSG_DEBUG, "Interworking: Overrided selected with selected_home");
2477 selected = selected_home;
2478 selected_cred = selected_home_cred;
2482 if (selected2_home) {
2483 wpa_printf(MSG_DEBUG, "Interworking: Use home BSS with BW limit mismatch since no other network could be selected");
2484 selected = selected2_home;
2485 selected_cred = selected2_home_cred;
2486 } else if (selected2) {
2487 wpa_printf(MSG_DEBUG, "Interworking: Use visited BSS with BW limit mismatch since no other network could be selected");
2488 selected = selected2;
2489 selected_cred = selected2_cred;
2495 * No matching network was found based on configured
2496 * credentials. Check whether any of the enabled network blocks
2497 * have matching APs.
2499 if (interworking_find_network_match(wpa_s)) {
2500 wpa_msg(wpa_s, MSG_DEBUG,
2501 "Interworking: Possible BSS match for enabled network configurations");
2502 if (wpa_s->auto_select) {
2503 interworking_reconnect(wpa_s);
2508 if (wpa_s->auto_network_select) {
2509 wpa_msg(wpa_s, MSG_DEBUG,
2510 "Interworking: Continue scanning after ANQP fetch");
2511 wpa_supplicant_req_scan(wpa_s, wpa_s->scan_interval,
2516 wpa_msg(wpa_s, MSG_INFO, INTERWORKING_NO_MATCH "No network "
2517 "with matching credentials found");
2518 if (wpa_s->wpa_state == WPA_SCANNING)
2519 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
2523 wpa_printf(MSG_DEBUG, "Interworking: Selected " MACSTR,
2524 MAC2STR(selected->bssid));
2525 selected = pick_best_roaming_partner(wpa_s, selected,
2527 wpa_printf(MSG_DEBUG, "Interworking: Selected " MACSTR
2528 " (after best roaming partner selection)",
2529 MAC2STR(selected->bssid));
2530 wpa_msg(wpa_s, MSG_INFO, INTERWORKING_SELECTED MACSTR,
2531 MAC2STR(selected->bssid));
2532 interworking_connect(wpa_s, selected, 0);
2537 static struct wpa_bss_anqp *
2538 interworking_match_anqp_info(struct wpa_supplicant *wpa_s, struct wpa_bss *bss)
2540 struct wpa_bss *other;
2542 if (is_zero_ether_addr(bss->hessid))
2543 return NULL; /* Cannot be in the same homegenous ESS */
2545 dl_list_for_each(other, &wpa_s->bss, struct wpa_bss, list) {
2548 if (other->anqp == NULL)
2550 if (other->anqp->roaming_consortium == NULL &&
2551 other->anqp->nai_realm == NULL &&
2552 other->anqp->anqp_3gpp == NULL &&
2553 other->anqp->domain_name == NULL)
2555 if (!(other->flags & WPA_BSS_ANQP_FETCH_TRIED))
2557 if (os_memcmp(bss->hessid, other->hessid, ETH_ALEN) != 0)
2559 if (bss->ssid_len != other->ssid_len ||
2560 os_memcmp(bss->ssid, other->ssid, bss->ssid_len) != 0)
2563 wpa_msg(wpa_s, MSG_DEBUG,
2564 "Interworking: Share ANQP data with already fetched BSSID "
2565 MACSTR " and " MACSTR,
2566 MAC2STR(other->bssid), MAC2STR(bss->bssid));
2567 other->anqp->users++;
2575 static void interworking_next_anqp_fetch(struct wpa_supplicant *wpa_s)
2577 struct wpa_bss *bss;
2581 wpa_printf(MSG_DEBUG, "Interworking: next_anqp_fetch - "
2582 "fetch_anqp_in_progress=%d fetch_osu_icon_in_progress=%d",
2583 wpa_s->fetch_anqp_in_progress,
2584 wpa_s->fetch_osu_icon_in_progress);
2586 if (eloop_terminated() || !wpa_s->fetch_anqp_in_progress) {
2587 wpa_printf(MSG_DEBUG, "Interworking: Stop next-ANQP-fetch");
2592 if (wpa_s->fetch_osu_icon_in_progress) {
2593 wpa_printf(MSG_DEBUG, "Interworking: Next icon (in progress)");
2594 hs20_next_osu_icon(wpa_s);
2597 #endif /* CONFIG_HS20 */
2599 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
2600 if (!(bss->caps & IEEE80211_CAP_ESS))
2602 ie = wpa_bss_get_ie(bss, WLAN_EID_EXT_CAPAB);
2603 if (ie == NULL || ie[1] < 4 || !(ie[5] & 0x80))
2604 continue; /* AP does not support Interworking */
2605 if (disallowed_bssid(wpa_s, bss->bssid) ||
2606 disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len))
2607 continue; /* Disallowed BSS */
2609 if (!(bss->flags & WPA_BSS_ANQP_FETCH_TRIED)) {
2610 if (bss->anqp == NULL) {
2611 bss->anqp = interworking_match_anqp_info(wpa_s,
2614 /* Shared data already fetched */
2617 bss->anqp = wpa_bss_anqp_alloc();
2618 if (bss->anqp == NULL)
2622 bss->flags |= WPA_BSS_ANQP_FETCH_TRIED;
2623 wpa_msg(wpa_s, MSG_INFO, "Starting ANQP fetch for "
2624 MACSTR, MAC2STR(bss->bssid));
2625 interworking_anqp_send_req(wpa_s, bss);
2632 if (wpa_s->fetch_osu_info) {
2633 if (wpa_s->num_prov_found == 0 &&
2634 wpa_s->fetch_osu_waiting_scan &&
2635 wpa_s->num_osu_scans < 3) {
2636 wpa_printf(MSG_DEBUG, "HS 2.0: No OSU providers seen - try to scan again");
2637 hs20_start_osu_scan(wpa_s);
2640 wpa_printf(MSG_DEBUG, "Interworking: Next icon");
2641 hs20_osu_icon_fetch(wpa_s);
2644 #endif /* CONFIG_HS20 */
2645 wpa_msg(wpa_s, MSG_INFO, "ANQP fetch completed");
2646 wpa_s->fetch_anqp_in_progress = 0;
2647 if (wpa_s->network_select)
2648 interworking_select_network(wpa_s);
2653 void interworking_start_fetch_anqp(struct wpa_supplicant *wpa_s)
2655 struct wpa_bss *bss;
2657 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list)
2658 bss->flags &= ~WPA_BSS_ANQP_FETCH_TRIED;
2660 wpa_s->fetch_anqp_in_progress = 1;
2663 * Start actual ANQP operation from eloop call to make sure the loop
2664 * does not end up using excessive recursion.
2666 eloop_register_timeout(0, 0, interworking_continue_anqp, wpa_s, NULL);
2670 int interworking_fetch_anqp(struct wpa_supplicant *wpa_s)
2672 if (wpa_s->fetch_anqp_in_progress || wpa_s->network_select)
2675 wpa_s->network_select = 0;
2676 wpa_s->fetch_all_anqp = 1;
2677 wpa_s->fetch_osu_info = 0;
2679 interworking_start_fetch_anqp(wpa_s);
2685 void interworking_stop_fetch_anqp(struct wpa_supplicant *wpa_s)
2687 if (!wpa_s->fetch_anqp_in_progress)
2690 wpa_s->fetch_anqp_in_progress = 0;
2694 int anqp_send_req(struct wpa_supplicant *wpa_s, const u8 *dst,
2695 u16 info_ids[], size_t num_ids, u32 subtypes,
2699 struct wpabuf *extra_buf = NULL;
2702 struct wpa_bss *bss;
2705 bss = wpa_bss_get_bssid(wpa_s, dst);
2707 wpa_printf(MSG_WARNING,
2708 "ANQP: Cannot send query to unknown BSS "
2709 MACSTR, MAC2STR(dst));
2713 wpa_bss_anqp_unshare_alloc(bss);
2716 wpa_msg(wpa_s, MSG_DEBUG,
2717 "ANQP: Query Request to " MACSTR " for %u id(s)",
2718 MAC2STR(dst), (unsigned int) num_ids);
2721 if (subtypes != 0) {
2722 extra_buf = wpabuf_alloc(100);
2723 if (extra_buf == NULL)
2725 hs20_put_anqp_req(subtypes, NULL, 0, extra_buf);
2727 #endif /* CONFIG_HS20 */
2730 if (get_cell_pref) {
2733 mbo = mbo_build_anqp_buf(wpa_s, bss);
2735 if (wpabuf_resize(&extra_buf, wpabuf_len(mbo))) {
2736 wpabuf_free(extra_buf);
2739 wpabuf_put_buf(extra_buf, mbo);
2743 #endif /* CONFIG_MBO */
2745 buf = anqp_build_req(info_ids, num_ids, extra_buf);
2746 wpabuf_free(extra_buf);
2750 res = gas_query_req(wpa_s->gas, dst, freq, buf, anqp_resp_cb, wpa_s);
2752 wpa_msg(wpa_s, MSG_DEBUG, "ANQP: Failed to send Query Request");
2756 wpa_msg(wpa_s, MSG_DEBUG,
2757 "ANQP: Query started with dialog token %u", res);
2764 static void anqp_add_extra(struct wpa_supplicant *wpa_s,
2765 struct wpa_bss_anqp *anqp, u16 info_id,
2766 const u8 *data, size_t slen)
2768 struct wpa_bss_anqp_elem *tmp, *elem = NULL;
2773 dl_list_for_each(tmp, &anqp->anqp_elems, struct wpa_bss_anqp_elem,
2775 if (tmp->infoid == info_id) {
2782 elem = os_zalloc(sizeof(*elem));
2785 elem->infoid = info_id;
2786 dl_list_add(&anqp->anqp_elems, &elem->list);
2788 wpabuf_free(elem->payload);
2791 elem->payload = wpabuf_alloc_copy(data, slen);
2792 if (!elem->payload) {
2793 dl_list_del(&elem->list);
2799 static void interworking_parse_rx_anqp_resp(struct wpa_supplicant *wpa_s,
2800 struct wpa_bss *bss, const u8 *sa,
2802 const u8 *data, size_t slen,
2805 const u8 *pos = data;
2806 struct wpa_bss_anqp *anqp = NULL;
2809 #endif /* CONFIG_HS20 */
2815 case ANQP_CAPABILITY_LIST:
2816 wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR
2817 " ANQP Capability list", MAC2STR(sa));
2818 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: Capability list",
2821 wpabuf_free(anqp->capability_list);
2822 anqp->capability_list = wpabuf_alloc_copy(pos, slen);
2825 case ANQP_VENUE_NAME:
2826 wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR
2827 " Venue Name", MAC2STR(sa));
2828 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: Venue Name", pos, slen);
2830 wpabuf_free(anqp->venue_name);
2831 anqp->venue_name = wpabuf_alloc_copy(pos, slen);
2834 case ANQP_NETWORK_AUTH_TYPE:
2835 wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR
2836 " Network Authentication Type information",
2838 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: Network Authentication "
2841 wpabuf_free(anqp->network_auth_type);
2842 anqp->network_auth_type = wpabuf_alloc_copy(pos, slen);
2845 case ANQP_ROAMING_CONSORTIUM:
2846 wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR
2847 " Roaming Consortium list", MAC2STR(sa));
2848 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: Roaming Consortium",
2851 wpabuf_free(anqp->roaming_consortium);
2852 anqp->roaming_consortium = wpabuf_alloc_copy(pos, slen);
2855 case ANQP_IP_ADDR_TYPE_AVAILABILITY:
2856 wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR
2857 " IP Address Type Availability information",
2859 wpa_hexdump(MSG_MSGDUMP, "ANQP: IP Address Availability",
2862 wpabuf_free(anqp->ip_addr_type_availability);
2863 anqp->ip_addr_type_availability =
2864 wpabuf_alloc_copy(pos, slen);
2867 case ANQP_NAI_REALM:
2868 wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR
2869 " NAI Realm list", MAC2STR(sa));
2870 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: NAI Realm", pos, slen);
2872 wpabuf_free(anqp->nai_realm);
2873 anqp->nai_realm = wpabuf_alloc_copy(pos, slen);
2876 case ANQP_3GPP_CELLULAR_NETWORK:
2877 wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR
2878 " 3GPP Cellular Network information", MAC2STR(sa));
2879 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: 3GPP Cellular Network",
2882 wpabuf_free(anqp->anqp_3gpp);
2883 anqp->anqp_3gpp = wpabuf_alloc_copy(pos, slen);
2886 case ANQP_DOMAIN_NAME:
2887 wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR
2888 " Domain Name list", MAC2STR(sa));
2889 wpa_hexdump_ascii(MSG_MSGDUMP, "ANQP: Domain Name", pos, slen);
2891 wpabuf_free(anqp->domain_name);
2892 anqp->domain_name = wpabuf_alloc_copy(pos, slen);
2895 case ANQP_VENDOR_SPECIFIC:
2899 switch (WPA_GET_BE24(pos)) {
2911 case HS20_ANQP_OUI_TYPE:
2912 hs20_parse_rx_hs20_anqp_resp(wpa_s, bss, sa,
2917 wpa_msg(wpa_s, MSG_DEBUG,
2918 "HS20: Unsupported ANQP vendor type %u",
2923 #endif /* CONFIG_HS20 */
2925 wpa_msg(wpa_s, MSG_DEBUG,
2926 "Interworking: Unsupported vendor-specific ANQP OUI %06x",
2932 wpa_msg(wpa_s, MSG_DEBUG,
2933 "Interworking: Unsupported ANQP Info ID %u", info_id);
2934 anqp_add_extra(wpa_s, anqp, info_id, data, slen);
2940 void anqp_resp_cb(void *ctx, const u8 *dst, u8 dialog_token,
2941 enum gas_query_result result,
2942 const struct wpabuf *adv_proto,
2943 const struct wpabuf *resp, u16 status_code)
2945 struct wpa_supplicant *wpa_s = ctx;
2950 struct wpa_bss *bss = NULL, *tmp;
2951 const char *anqp_result = "SUCCESS";
2953 wpa_printf(MSG_DEBUG, "Interworking: anqp_resp_cb dst=" MACSTR
2954 " dialog_token=%u result=%d status_code=%u",
2955 MAC2STR(dst), dialog_token, result, status_code);
2956 if (result != GAS_QUERY_SUCCESS) {
2958 if (wpa_s->fetch_osu_icon_in_progress)
2959 hs20_icon_fetch_failed(wpa_s);
2960 #endif /* CONFIG_HS20 */
2961 anqp_result = "FAILURE";
2965 pos = wpabuf_head(adv_proto);
2966 if (wpabuf_len(adv_proto) < 4 || pos[0] != WLAN_EID_ADV_PROTO ||
2967 pos[1] < 2 || pos[3] != ACCESS_NETWORK_QUERY_PROTOCOL) {
2968 wpa_msg(wpa_s, MSG_DEBUG,
2969 "ANQP: Unexpected Advertisement Protocol in response");
2971 if (wpa_s->fetch_osu_icon_in_progress)
2972 hs20_icon_fetch_failed(wpa_s);
2973 #endif /* CONFIG_HS20 */
2974 anqp_result = "INVALID_FRAME";
2979 * If possible, select the BSS entry based on which BSS entry was used
2980 * for the request. This can help in cases where multiple BSS entries
2981 * may exist for the same AP.
2983 dl_list_for_each_reverse(tmp, &wpa_s->bss, struct wpa_bss, list) {
2984 if (tmp == wpa_s->interworking_gas_bss &&
2985 os_memcmp(tmp->bssid, dst, ETH_ALEN) == 0) {
2991 bss = wpa_bss_get_bssid(wpa_s, dst);
2993 pos = wpabuf_head(resp);
2994 end = pos + wpabuf_len(resp);
2997 unsigned int left = end - pos;
3000 wpa_msg(wpa_s, MSG_DEBUG, "ANQP: Invalid element");
3001 anqp_result = "INVALID_FRAME";
3002 goto out_parse_done;
3004 info_id = WPA_GET_LE16(pos);
3006 slen = WPA_GET_LE16(pos);
3010 wpa_msg(wpa_s, MSG_DEBUG,
3011 "ANQP: Invalid element length for Info ID %u",
3013 anqp_result = "INVALID_FRAME";
3014 goto out_parse_done;
3016 interworking_parse_rx_anqp_resp(wpa_s, bss, dst, info_id, pos,
3017 slen, dialog_token);
3023 hs20_notify_parse_done(wpa_s);
3024 #endif /* CONFIG_HS20 */
3026 wpa_msg(wpa_s, MSG_INFO, ANQP_QUERY_DONE "addr=" MACSTR " result=%s",
3027 MAC2STR(dst), anqp_result);
3031 static void interworking_scan_res_handler(struct wpa_supplicant *wpa_s,
3032 struct wpa_scan_results *scan_res)
3034 wpa_msg(wpa_s, MSG_DEBUG,
3035 "Interworking: Scan results available - start ANQP fetch");
3036 interworking_start_fetch_anqp(wpa_s);
3040 int interworking_select(struct wpa_supplicant *wpa_s, int auto_select,
3043 interworking_stop_fetch_anqp(wpa_s);
3044 wpa_s->network_select = 1;
3045 wpa_s->auto_network_select = 0;
3046 wpa_s->auto_select = !!auto_select;
3047 wpa_s->fetch_all_anqp = 0;
3048 wpa_s->fetch_osu_info = 0;
3049 wpa_msg(wpa_s, MSG_DEBUG,
3050 "Interworking: Start scan for network selection");
3051 wpa_s->scan_res_handler = interworking_scan_res_handler;
3052 wpa_s->normal_scans = 0;
3053 wpa_s->scan_req = MANUAL_SCAN_REQ;
3054 os_free(wpa_s->manual_scan_freqs);
3055 wpa_s->manual_scan_freqs = freqs;
3056 wpa_s->after_wps = 0;
3057 wpa_s->known_wps_freq = 0;
3058 wpa_supplicant_req_scan(wpa_s, 0, 0);
3064 static void gas_resp_cb(void *ctx, const u8 *addr, u8 dialog_token,
3065 enum gas_query_result result,
3066 const struct wpabuf *adv_proto,
3067 const struct wpabuf *resp, u16 status_code)
3069 struct wpa_supplicant *wpa_s = ctx;
3072 wpa_msg(wpa_s, MSG_INFO, GAS_RESPONSE_INFO "addr=" MACSTR
3073 " dialog_token=%d status_code=%d resp_len=%d",
3074 MAC2STR(addr), dialog_token, status_code,
3075 resp ? (int) wpabuf_len(resp) : -1);
3079 n = wpabuf_dup(resp);
3082 wpabuf_free(wpa_s->prev_gas_resp);
3083 wpa_s->prev_gas_resp = wpa_s->last_gas_resp;
3084 os_memcpy(wpa_s->prev_gas_addr, wpa_s->last_gas_addr, ETH_ALEN);
3085 wpa_s->prev_gas_dialog_token = wpa_s->last_gas_dialog_token;
3086 wpa_s->last_gas_resp = n;
3087 os_memcpy(wpa_s->last_gas_addr, addr, ETH_ALEN);
3088 wpa_s->last_gas_dialog_token = dialog_token;
3092 int gas_send_request(struct wpa_supplicant *wpa_s, const u8 *dst,
3093 const struct wpabuf *adv_proto,
3094 const struct wpabuf *query)
3099 struct wpa_bss *bss;
3102 u8 query_resp_len_limit = 0;
3104 freq = wpa_s->assoc_freq;
3105 bss = wpa_bss_get_bssid(wpa_s, dst);
3111 wpa_msg(wpa_s, MSG_DEBUG, "GAS request to " MACSTR " (freq %d MHz)",
3112 MAC2STR(dst), freq);
3113 wpa_hexdump_buf(MSG_DEBUG, "Advertisement Protocol ID", adv_proto);
3114 wpa_hexdump_buf(MSG_DEBUG, "GAS Query", query);
3116 len = 3 + wpabuf_len(adv_proto) + 2;
3118 len += wpabuf_len(query);
3119 buf = gas_build_initial_req(0, len);
3123 /* Advertisement Protocol IE */
3124 wpabuf_put_u8(buf, WLAN_EID_ADV_PROTO);
3125 wpabuf_put_u8(buf, 1 + wpabuf_len(adv_proto)); /* Length */
3126 wpabuf_put_u8(buf, query_resp_len_limit & 0x7f);
3127 wpabuf_put_buf(buf, adv_proto);
3131 wpabuf_put_le16(buf, wpabuf_len(query));
3132 wpabuf_put_buf(buf, query);
3134 wpabuf_put_le16(buf, 0);
3136 res = gas_query_req(wpa_s->gas, dst, freq, buf, gas_resp_cb, wpa_s);
3138 wpa_msg(wpa_s, MSG_DEBUG, "GAS: Failed to send Query Request");
3142 wpa_msg(wpa_s, MSG_DEBUG,
3143 "GAS: Query started with dialog token %u", res);