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"
30 #include "gas_query.h"
31 #include "hs20_supplicant.h"
32 #include "interworking.h"
35 #if defined(EAP_SIM) | defined(EAP_SIM_DYNAMIC)
36 #define INTERWORKING_3GPP
38 #if defined(EAP_AKA) | defined(EAP_AKA_DYNAMIC)
39 #define INTERWORKING_3GPP
41 #if defined(EAP_AKA_PRIME) | defined(EAP_AKA_PRIME_DYNAMIC)
42 #define INTERWORKING_3GPP
47 static void interworking_next_anqp_fetch(struct wpa_supplicant *wpa_s);
48 static struct wpa_cred * interworking_credentials_available_realm(
49 struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw,
51 static struct wpa_cred * interworking_credentials_available_3gpp(
52 struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw,
56 static int cred_prio_cmp(const struct wpa_cred *a, const struct wpa_cred *b)
58 if (a->priority > b->priority)
60 if (a->priority < b->priority)
62 if (a->provisioning_sp == NULL || b->provisioning_sp == NULL ||
63 os_strcmp(a->provisioning_sp, b->provisioning_sp) != 0)
65 if (a->sp_priority < b->sp_priority)
67 if (a->sp_priority > b->sp_priority)
73 static void interworking_reconnect(struct wpa_supplicant *wpa_s)
75 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
76 wpa_supplicant_cancel_sched_scan(wpa_s);
77 wpa_supplicant_deauthenticate(wpa_s,
78 WLAN_REASON_DEAUTH_LEAVING);
80 wpa_s->disconnected = 0;
81 wpa_s->reassociate = 1;
83 if (wpa_supplicant_fast_associate(wpa_s) >= 0)
86 wpa_supplicant_req_scan(wpa_s, 0, 0);
90 static struct wpabuf * anqp_build_req(u16 info_ids[], size_t num_ids,
97 buf = gas_anqp_build_initial_req(0, 4 + num_ids * 2 +
98 (extra ? wpabuf_len(extra) : 0));
102 len_pos = gas_anqp_add_element(buf, ANQP_QUERY_LIST);
103 for (i = 0; i < num_ids; i++)
104 wpabuf_put_le16(buf, info_ids[i]);
105 gas_anqp_set_element_len(buf, len_pos);
107 wpabuf_put_buf(buf, extra);
109 gas_anqp_set_len(buf);
115 static void interworking_anqp_resp_cb(void *ctx, const u8 *dst,
117 enum gas_query_result result,
118 const struct wpabuf *adv_proto,
119 const struct wpabuf *resp,
122 struct wpa_supplicant *wpa_s = ctx;
124 wpa_printf(MSG_DEBUG, "ANQP: Response callback dst=" MACSTR
125 " dialog_token=%u result=%d status_code=%u",
126 MAC2STR(dst), dialog_token, result, status_code);
127 anqp_resp_cb(wpa_s, dst, dialog_token, result, adv_proto, resp,
129 interworking_next_anqp_fetch(wpa_s);
133 static int cred_with_roaming_consortium(struct wpa_supplicant *wpa_s)
135 struct wpa_cred *cred;
137 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
138 if (cred->roaming_consortium_len)
140 if (cred->required_roaming_consortium_len)
147 static int cred_with_3gpp(struct wpa_supplicant *wpa_s)
149 struct wpa_cred *cred;
151 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
152 if (cred->pcsc || cred->imsi)
159 static int cred_with_nai_realm(struct wpa_supplicant *wpa_s)
161 struct wpa_cred *cred;
163 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
164 if (cred->pcsc || cred->imsi)
166 if (!cred->eap_method)
168 if (cred->realm && cred->roaming_consortium_len == 0)
175 static int cred_with_domain(struct wpa_supplicant *wpa_s)
177 struct wpa_cred *cred;
179 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
180 if (cred->domain || cred->pcsc || cred->imsi ||
181 cred->roaming_partner)
190 static int cred_with_min_backhaul(struct wpa_supplicant *wpa_s)
192 struct wpa_cred *cred;
194 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
195 if (cred->min_dl_bandwidth_home ||
196 cred->min_ul_bandwidth_home ||
197 cred->min_dl_bandwidth_roaming ||
198 cred->min_ul_bandwidth_roaming)
205 static int cred_with_conn_capab(struct wpa_supplicant *wpa_s)
207 struct wpa_cred *cred;
209 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
210 if (cred->num_req_conn_capab)
216 #endif /* CONFIG_HS20 */
219 static int additional_roaming_consortiums(struct wpa_bss *bss)
222 ie = wpa_bss_get_ie(bss, WLAN_EID_ROAMING_CONSORTIUM);
223 if (ie == NULL || ie[1] == 0)
225 return ie[2]; /* Number of ANQP OIs */
229 static void interworking_continue_anqp(void *eloop_ctx, void *sock_ctx)
231 struct wpa_supplicant *wpa_s = eloop_ctx;
232 interworking_next_anqp_fetch(wpa_s);
236 static int interworking_anqp_send_req(struct wpa_supplicant *wpa_s,
243 size_t num_info_ids = 0;
244 struct wpabuf *extra = NULL;
245 int all = wpa_s->fetch_all_anqp;
247 wpa_printf(MSG_DEBUG, "Interworking: ANQP Query Request to " MACSTR,
248 MAC2STR(bss->bssid));
249 wpa_s->interworking_gas_bss = bss;
251 info_ids[num_info_ids++] = ANQP_CAPABILITY_LIST;
253 info_ids[num_info_ids++] = ANQP_VENUE_NAME;
254 info_ids[num_info_ids++] = ANQP_NETWORK_AUTH_TYPE;
256 if (all || (cred_with_roaming_consortium(wpa_s) &&
257 additional_roaming_consortiums(bss)))
258 info_ids[num_info_ids++] = ANQP_ROAMING_CONSORTIUM;
260 info_ids[num_info_ids++] = ANQP_IP_ADDR_TYPE_AVAILABILITY;
261 if (all || cred_with_nai_realm(wpa_s))
262 info_ids[num_info_ids++] = ANQP_NAI_REALM;
263 if (all || cred_with_3gpp(wpa_s)) {
264 info_ids[num_info_ids++] = ANQP_3GPP_CELLULAR_NETWORK;
265 wpa_supplicant_scard_init(wpa_s, NULL);
267 if (all || cred_with_domain(wpa_s))
268 info_ids[num_info_ids++] = ANQP_DOMAIN_NAME;
269 wpa_hexdump(MSG_DEBUG, "Interworking: ANQP Query info",
270 (u8 *) info_ids, num_info_ids * 2);
273 if (wpa_bss_get_vendor_ie(bss, HS20_IE_VENDOR_TYPE)) {
276 extra = wpabuf_alloc(100);
280 len_pos = gas_anqp_add_element(extra, ANQP_VENDOR_SPECIFIC);
281 wpabuf_put_be24(extra, OUI_WFA);
282 wpabuf_put_u8(extra, HS20_ANQP_OUI_TYPE);
283 wpabuf_put_u8(extra, HS20_STYPE_QUERY_LIST);
284 wpabuf_put_u8(extra, 0); /* Reserved */
285 wpabuf_put_u8(extra, HS20_STYPE_CAPABILITY_LIST);
288 HS20_STYPE_OPERATOR_FRIENDLY_NAME);
289 if (all || cred_with_min_backhaul(wpa_s))
290 wpabuf_put_u8(extra, HS20_STYPE_WAN_METRICS);
291 if (all || cred_with_conn_capab(wpa_s))
292 wpabuf_put_u8(extra, HS20_STYPE_CONNECTION_CAPABILITY);
294 wpabuf_put_u8(extra, HS20_STYPE_OPERATING_CLASS);
296 wpabuf_put_u8(extra, HS20_STYPE_OSU_PROVIDERS_LIST);
297 gas_anqp_set_element_len(extra, len_pos);
299 #endif /* CONFIG_HS20 */
301 buf = anqp_build_req(info_ids, num_info_ids, extra);
306 res = gas_query_req(wpa_s->gas, bss->bssid, bss->freq, buf,
307 interworking_anqp_resp_cb, wpa_s);
309 wpa_printf(MSG_DEBUG, "ANQP: Failed to send Query Request");
312 eloop_register_timeout(0, 0, interworking_continue_anqp, wpa_s,
315 wpa_printf(MSG_DEBUG, "ANQP: Query started with dialog token "
322 struct nai_realm_eap {
325 enum nai_realm_eap_auth_inner_non_eap inner_non_eap;
327 u8 tunneled_cred_type;
334 struct nai_realm_eap *eap;
338 static void nai_realm_free(struct nai_realm *realms, u16 count)
344 for (i = 0; i < count; i++) {
345 os_free(realms[i].eap);
346 os_free(realms[i].realm);
352 static const u8 * nai_realm_parse_eap(struct nai_realm_eap *e, const u8 *pos,
355 u8 elen, auth_count, a;
359 wpa_printf(MSG_DEBUG, "No room for EAP Method fixed fields");
364 if (pos + elen > end || elen < 2) {
365 wpa_printf(MSG_DEBUG, "No room for EAP Method subfield");
371 wpa_printf(MSG_DEBUG, "EAP Method: len=%u method=%u auth_count=%u",
372 elen, e->method, auth_count);
374 for (a = 0; a < auth_count; a++) {
377 if (pos + 2 > end || pos + 2 + pos[1] > end) {
378 wpa_printf(MSG_DEBUG, "No room for Authentication "
379 "Parameter subfield");
387 case NAI_REALM_EAP_AUTH_NON_EAP_INNER_AUTH:
390 e->inner_non_eap = *pos;
391 if (e->method != EAP_TYPE_TTLS)
394 case NAI_REALM_INNER_NON_EAP_PAP:
395 wpa_printf(MSG_DEBUG, "EAP-TTLS/PAP");
397 case NAI_REALM_INNER_NON_EAP_CHAP:
398 wpa_printf(MSG_DEBUG, "EAP-TTLS/CHAP");
400 case NAI_REALM_INNER_NON_EAP_MSCHAP:
401 wpa_printf(MSG_DEBUG, "EAP-TTLS/MSCHAP");
403 case NAI_REALM_INNER_NON_EAP_MSCHAPV2:
404 wpa_printf(MSG_DEBUG, "EAP-TTLS/MSCHAPV2");
408 case NAI_REALM_EAP_AUTH_INNER_AUTH_EAP_METHOD:
411 e->inner_method = *pos;
412 wpa_printf(MSG_DEBUG, "Inner EAP method: %u",
415 case NAI_REALM_EAP_AUTH_CRED_TYPE:
419 wpa_printf(MSG_DEBUG, "Credential Type: %u",
422 case NAI_REALM_EAP_AUTH_TUNNELED_CRED_TYPE:
425 e->tunneled_cred_type = *pos;
426 wpa_printf(MSG_DEBUG, "Tunneled EAP Method Credential "
427 "Type: %u", e->tunneled_cred_type);
430 wpa_printf(MSG_DEBUG, "Unsupported Authentication "
431 "Parameter: id=%u len=%u", id, len);
432 wpa_hexdump(MSG_DEBUG, "Authentication Parameter "
444 static const u8 * nai_realm_parse_realm(struct nai_realm *r, const u8 *pos,
452 wpa_printf(MSG_DEBUG, "No room for NAI Realm Data "
457 len = WPA_GET_LE16(pos); /* NAI Realm Data field Length */
459 if (pos + len > end || len < 3) {
460 wpa_printf(MSG_DEBUG, "No room for NAI Realm Data "
462 len, (unsigned int) (end - pos));
467 r->encoding = *pos++;
469 if (pos + realm_len > f_end) {
470 wpa_printf(MSG_DEBUG, "No room for NAI Realm "
472 realm_len, (unsigned int) (f_end - pos));
475 wpa_hexdump_ascii(MSG_DEBUG, "NAI Realm", pos, realm_len);
476 r->realm = dup_binstr(pos, realm_len);
477 if (r->realm == NULL)
481 if (pos + 1 > f_end) {
482 wpa_printf(MSG_DEBUG, "No room for EAP Method Count");
485 r->eap_count = *pos++;
486 wpa_printf(MSG_DEBUG, "EAP Count: %u", r->eap_count);
487 if (pos + r->eap_count * 3 > f_end) {
488 wpa_printf(MSG_DEBUG, "No room for EAP Methods");
491 r->eap = os_calloc(r->eap_count, sizeof(struct nai_realm_eap));
495 for (e = 0; e < r->eap_count; e++) {
496 pos = nai_realm_parse_eap(&r->eap[e], pos, f_end);
505 static struct nai_realm * nai_realm_parse(struct wpabuf *anqp, u16 *count)
507 struct nai_realm *realm;
511 if (anqp == NULL || wpabuf_len(anqp) < 2)
514 pos = wpabuf_head_u8(anqp);
515 end = pos + wpabuf_len(anqp);
516 num = WPA_GET_LE16(pos);
517 wpa_printf(MSG_DEBUG, "NAI Realm Count: %u", num);
520 if (num * 5 > end - pos) {
521 wpa_printf(MSG_DEBUG, "Invalid NAI Realm Count %u - not "
522 "enough data (%u octets) for that many realms",
523 num, (unsigned int) (end - pos));
527 realm = os_calloc(num, sizeof(struct nai_realm));
531 for (i = 0; i < num; i++) {
532 pos = nai_realm_parse_realm(&realm[i], pos, end);
534 nai_realm_free(realm, num);
544 static int nai_realm_match(struct nai_realm *realm, const char *home_realm)
546 char *tmp, *pos, *end;
549 if (realm->realm == NULL || home_realm == NULL)
552 if (os_strchr(realm->realm, ';') == NULL)
553 return os_strcasecmp(realm->realm, home_realm) == 0;
555 tmp = os_strdup(realm->realm);
561 end = os_strchr(pos, ';');
564 if (os_strcasecmp(pos, home_realm) == 0) {
579 static int nai_realm_cred_username(struct nai_realm_eap *eap)
581 if (eap_get_name(EAP_VENDOR_IETF, eap->method) == NULL)
582 return 0; /* method not supported */
584 if (eap->method != EAP_TYPE_TTLS && eap->method != EAP_TYPE_PEAP &&
585 eap->method != EAP_TYPE_FAST) {
586 /* Only tunneled methods with username/password supported */
590 if (eap->method == EAP_TYPE_PEAP || eap->method == EAP_TYPE_FAST) {
591 if (eap->inner_method &&
592 eap_get_name(EAP_VENDOR_IETF, eap->inner_method) == NULL)
594 if (!eap->inner_method &&
595 eap_get_name(EAP_VENDOR_IETF, EAP_TYPE_MSCHAPV2) == NULL)
599 if (eap->method == EAP_TYPE_TTLS) {
600 if (eap->inner_method == 0 && eap->inner_non_eap == 0)
601 return 1; /* Assume TTLS/MSCHAPv2 is used */
602 if (eap->inner_method &&
603 eap_get_name(EAP_VENDOR_IETF, eap->inner_method) == NULL)
605 if (eap->inner_non_eap &&
606 eap->inner_non_eap != NAI_REALM_INNER_NON_EAP_PAP &&
607 eap->inner_non_eap != NAI_REALM_INNER_NON_EAP_CHAP &&
608 eap->inner_non_eap != NAI_REALM_INNER_NON_EAP_MSCHAP &&
609 eap->inner_non_eap != NAI_REALM_INNER_NON_EAP_MSCHAPV2)
613 if (eap->inner_method &&
614 eap->inner_method != EAP_TYPE_GTC &&
615 eap->inner_method != EAP_TYPE_MSCHAPV2)
622 static int nai_realm_cred_cert(struct nai_realm_eap *eap)
624 if (eap_get_name(EAP_VENDOR_IETF, eap->method) == NULL)
625 return 0; /* method not supported */
627 if (eap->method != EAP_TYPE_TLS) {
628 /* Only EAP-TLS supported for credential authentication */
636 static struct nai_realm_eap * nai_realm_find_eap(struct wpa_cred *cred,
637 struct nai_realm *realm)
642 cred->username == NULL ||
643 cred->username[0] == '\0' ||
644 ((cred->password == NULL ||
645 cred->password[0] == '\0') &&
646 (cred->private_key == NULL ||
647 cred->private_key[0] == '\0')))
650 for (e = 0; e < realm->eap_count; e++) {
651 struct nai_realm_eap *eap = &realm->eap[e];
652 if (cred->password && cred->password[0] &&
653 nai_realm_cred_username(eap))
655 if (cred->private_key && cred->private_key[0] &&
656 nai_realm_cred_cert(eap))
664 #ifdef INTERWORKING_3GPP
666 static int plmn_id_match(struct wpabuf *anqp, const char *imsi, int mnc_len)
668 u8 plmn[3], plmn2[3];
673 * See Annex A of 3GPP TS 24.234 v8.1.0 for description. The network
674 * operator is allowed to include only two digits of the MNC, so allow
675 * matches based on both two and three digit MNC assumptions. Since some
676 * SIM/USIM cards may not expose MNC length conveniently, we may be
677 * provided the default MNC length 3 here and as such, checking with MNC
678 * length 2 is justifiable even though 3GPP TS 24.234 does not mention
679 * that case. Anyway, MCC/MNC pair where both 2 and 3 digit MNC is used
680 * with otherwise matching values would not be good idea in general, so
681 * this should not result in selecting incorrect networks.
683 /* Match with 3 digit MNC */
684 plmn[0] = (imsi[0] - '0') | ((imsi[1] - '0') << 4);
685 plmn[1] = (imsi[2] - '0') | ((imsi[5] - '0') << 4);
686 plmn[2] = (imsi[3] - '0') | ((imsi[4] - '0') << 4);
687 /* Match with 2 digit MNC */
688 plmn2[0] = (imsi[0] - '0') | ((imsi[1] - '0') << 4);
689 plmn2[1] = (imsi[2] - '0') | 0xf0;
690 plmn2[2] = (imsi[3] - '0') | ((imsi[4] - '0') << 4);
694 pos = wpabuf_head_u8(anqp);
695 end = pos + wpabuf_len(anqp);
699 wpa_printf(MSG_DEBUG, "Unsupported GUD version 0x%x", *pos);
704 if (pos + udhl > end) {
705 wpa_printf(MSG_DEBUG, "Invalid UDHL");
710 wpa_printf(MSG_DEBUG, "Interworking: Matching against MCC/MNC alternatives: %02x:%02x:%02x or %02x:%02x:%02x (IMSI %s, MNC length %d)",
711 plmn[0], plmn[1], plmn[2], plmn2[0], plmn2[1], plmn2[2],
714 while (pos + 2 <= end) {
723 if (iei == 0 && len > 0) {
726 wpa_hexdump(MSG_DEBUG, "Interworking: PLMN List information element",
729 for (i = 0; i < num; i++) {
732 if (os_memcmp(pos, plmn, 3) == 0 ||
733 os_memcmp(pos, plmn2, 3) == 0)
734 return 1; /* Found matching PLMN */
738 wpa_hexdump(MSG_DEBUG, "Interworking: Unrecognized 3GPP information element",
749 static int build_root_nai(char *nai, size_t nai_len, const char *imsi,
750 size_t mnc_len, char prefix)
752 const char *sep, *msin;
754 size_t msin_len, plmn_len;
757 * TS 23.003, Clause 14 (3GPP to WLAN Interworking)
759 * <aka:0|sim:1><IMSI>@wlan.mnc<MNC>.mcc<MCC>.3gppnetwork.org
760 * <MNC> is zero-padded to three digits in case two-digit MNC is used
763 if (imsi == NULL || os_strlen(imsi) > 16) {
764 wpa_printf(MSG_DEBUG, "No valid IMSI available");
767 sep = os_strchr(imsi, '-');
769 plmn_len = sep - imsi;
771 } else if (mnc_len && os_strlen(imsi) >= 3 + mnc_len) {
772 plmn_len = 3 + mnc_len;
773 msin = imsi + plmn_len;
776 if (plmn_len != 5 && plmn_len != 6)
778 msin_len = os_strlen(msin);
784 os_memcpy(pos, imsi, plmn_len);
786 os_memcpy(pos, msin, msin_len);
788 pos += os_snprintf(pos, end - pos, "@wlan.mnc");
798 pos += os_snprintf(pos, end - pos, ".mcc%c%c%c.3gppnetwork.org",
799 imsi[0], imsi[1], imsi[2]);
805 static int set_root_nai(struct wpa_ssid *ssid, const char *imsi, char prefix)
808 if (build_root_nai(nai, sizeof(nai), imsi, 0, prefix) < 0)
810 return wpa_config_set_quoted(ssid, "identity", nai);
813 #endif /* INTERWORKING_3GPP */
816 static int already_connected(struct wpa_supplicant *wpa_s,
817 struct wpa_cred *cred, struct wpa_bss *bss)
819 struct wpa_ssid *ssid, *sel_ssid;
820 struct wpa_bss *selected;
822 if (wpa_s->wpa_state < WPA_ASSOCIATED || wpa_s->current_ssid == NULL)
825 ssid = wpa_s->current_ssid;
826 if (ssid->parent_cred != cred)
829 if (ssid->ssid_len != bss->ssid_len ||
830 os_memcmp(ssid->ssid, bss->ssid, bss->ssid_len) != 0)
834 selected = wpa_supplicant_pick_network(wpa_s, &sel_ssid);
835 if (selected && sel_ssid && sel_ssid->priority > ssid->priority)
836 return 0; /* higher priority network in scan results */
842 static void remove_duplicate_network(struct wpa_supplicant *wpa_s,
843 struct wpa_cred *cred,
846 struct wpa_ssid *ssid;
848 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
849 if (ssid->parent_cred != cred)
851 if (ssid->ssid_len != bss->ssid_len ||
852 os_memcmp(ssid->ssid, bss->ssid, bss->ssid_len) != 0)
861 wpa_printf(MSG_DEBUG, "Interworking: Remove duplicate network entry for the same credential");
863 if (ssid == wpa_s->current_ssid) {
864 wpa_sm_set_config(wpa_s->wpa, NULL);
865 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
866 wpa_supplicant_deauthenticate(wpa_s,
867 WLAN_REASON_DEAUTH_LEAVING);
870 wpas_notify_network_removed(wpa_s, ssid);
871 wpa_config_remove_network(wpa_s->conf, ssid->id);
875 static int interworking_set_hs20_params(struct wpa_supplicant *wpa_s,
876 struct wpa_ssid *ssid)
878 if (wpa_config_set(ssid, "key_mgmt",
879 wpa_s->conf->pmf != NO_MGMT_FRAME_PROTECTION ?
880 "WPA-EAP WPA-EAP-SHA256" : "WPA-EAP", 0) < 0)
882 if (wpa_config_set(ssid, "proto", "RSN", 0) < 0)
884 if (wpa_config_set(ssid, "pairwise", "CCMP", 0) < 0)
890 static int interworking_connect_3gpp(struct wpa_supplicant *wpa_s,
891 struct wpa_cred *cred,
894 #ifdef INTERWORKING_3GPP
895 struct wpa_ssid *ssid;
900 if (bss->anqp == NULL || bss->anqp->anqp_3gpp == NULL)
903 wpa_printf(MSG_DEBUG, "Interworking: Connect with " MACSTR " (3GPP)",
904 MAC2STR(bss->bssid));
906 if (already_connected(wpa_s, cred, bss)) {
907 wpa_msg(wpa_s, MSG_INFO, INTERWORKING_ALREADY_CONNECTED MACSTR,
908 MAC2STR(bss->bssid));
912 remove_duplicate_network(wpa_s, cred, bss);
914 ssid = wpa_config_add_network(wpa_s->conf);
917 ssid->parent_cred = cred;
919 wpas_notify_network_added(wpa_s, ssid);
920 wpa_config_set_network_defaults(ssid);
921 ssid->priority = cred->priority;
923 ssid->ssid = os_zalloc(bss->ssid_len + 1);
924 if (ssid->ssid == NULL)
926 os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
927 ssid->ssid_len = bss->ssid_len;
929 if (interworking_set_hs20_params(wpa_s, ssid) < 0)
932 eap_type = EAP_TYPE_SIM;
933 if (cred->pcsc && wpa_s->scard && scard_supports_umts(wpa_s->scard))
934 eap_type = EAP_TYPE_AKA;
935 if (cred->eap_method && cred->eap_method[0].vendor == EAP_VENDOR_IETF) {
936 if (cred->eap_method[0].method == EAP_TYPE_SIM ||
937 cred->eap_method[0].method == EAP_TYPE_AKA ||
938 cred->eap_method[0].method == EAP_TYPE_AKA_PRIME)
939 eap_type = cred->eap_method[0].method;
945 res = wpa_config_set(ssid, "eap", "SIM", 0);
949 res = wpa_config_set(ssid, "eap", "AKA", 0);
951 case EAP_TYPE_AKA_PRIME:
953 res = wpa_config_set(ssid, "eap", "AKA'", 0);
960 wpa_printf(MSG_DEBUG, "Selected EAP method (%d) not supported",
965 if (!cred->pcsc && set_root_nai(ssid, cred->imsi, prefix) < 0) {
966 wpa_printf(MSG_DEBUG, "Failed to set Root NAI");
970 if (cred->milenage && cred->milenage[0]) {
971 if (wpa_config_set_quoted(ssid, "password",
974 } else if (cred->pcsc) {
975 if (wpa_config_set_quoted(ssid, "pcsc", "") < 0)
977 if (wpa_s->conf->pcsc_pin &&
978 wpa_config_set_quoted(ssid, "pin", wpa_s->conf->pcsc_pin)
983 wpa_s->next_ssid = ssid;
984 wpa_config_update_prio_list(wpa_s->conf);
985 interworking_reconnect(wpa_s);
990 wpas_notify_network_removed(wpa_s, ssid);
991 wpa_config_remove_network(wpa_s->conf, ssid->id);
992 #endif /* INTERWORKING_3GPP */
997 static int roaming_consortium_element_match(const u8 *ie, const u8 *rc_id,
1000 const u8 *pos, *end;
1007 end = ie + 2 + ie[1];
1009 /* Roaming Consortium element:
1010 * Number of ANQP OIs
1011 * OI #1 and #2 lengths
1012 * OI #1, [OI #2], [OI #3]
1018 pos++; /* skip Number of ANQP OIs */
1020 if (pos + (lens & 0x0f) + (lens >> 4) > end)
1023 if ((lens & 0x0f) == rc_len && os_memcmp(pos, rc_id, rc_len) == 0)
1027 if ((lens >> 4) == rc_len && os_memcmp(pos, rc_id, rc_len) == 0)
1031 if (pos < end && (size_t) (end - pos) == rc_len &&
1032 os_memcmp(pos, rc_id, rc_len) == 0)
1039 static int roaming_consortium_anqp_match(const struct wpabuf *anqp,
1040 const u8 *rc_id, size_t rc_len)
1042 const u8 *pos, *end;
1048 pos = wpabuf_head(anqp);
1049 end = pos + wpabuf_len(anqp);
1051 /* Set of <OI Length, OI> duples */
1054 if (pos + len > end)
1056 if (len == rc_len && os_memcmp(pos, rc_id, rc_len) == 0)
1065 static int roaming_consortium_match(const u8 *ie, const struct wpabuf *anqp,
1066 const u8 *rc_id, size_t rc_len)
1068 return roaming_consortium_element_match(ie, rc_id, rc_len) ||
1069 roaming_consortium_anqp_match(anqp, rc_id, rc_len);
1073 static int cred_no_required_oi_match(struct wpa_cred *cred, struct wpa_bss *bss)
1077 if (cred->required_roaming_consortium_len == 0)
1080 ie = wpa_bss_get_ie(bss, WLAN_EID_ROAMING_CONSORTIUM);
1083 (bss->anqp == NULL || bss->anqp->roaming_consortium == NULL))
1086 return !roaming_consortium_match(ie,
1088 bss->anqp->roaming_consortium : NULL,
1089 cred->required_roaming_consortium,
1090 cred->required_roaming_consortium_len);
1094 static int cred_excluded_ssid(struct wpa_cred *cred, struct wpa_bss *bss)
1098 if (!cred->excluded_ssid)
1101 for (i = 0; i < cred->num_excluded_ssid; i++) {
1102 struct excluded_ssid *e = &cred->excluded_ssid[i];
1103 if (bss->ssid_len == e->ssid_len &&
1104 os_memcmp(bss->ssid, e->ssid, e->ssid_len) == 0)
1112 static int cred_below_min_backhaul(struct wpa_supplicant *wpa_s,
1113 struct wpa_cred *cred, struct wpa_bss *bss)
1116 unsigned int dl_bandwidth, ul_bandwidth;
1118 u8 wan_info, dl_load, ul_load;
1120 u32 ul_speed, dl_speed;
1122 if (!cred->min_dl_bandwidth_home &&
1123 !cred->min_ul_bandwidth_home &&
1124 !cred->min_dl_bandwidth_roaming &&
1125 !cred->min_ul_bandwidth_roaming)
1126 return 0; /* No bandwidth constraint specified */
1128 if (bss->anqp == NULL || bss->anqp->hs20_wan_metrics == NULL)
1129 return 0; /* No WAN Metrics known - ignore constraint */
1131 wan = wpabuf_head(bss->anqp->hs20_wan_metrics);
1133 if (wan_info & BIT(3))
1134 return 1; /* WAN link at capacity */
1135 lmd = WPA_GET_LE16(wan + 11);
1137 return 0; /* Downlink/Uplink Load was not measured */
1138 dl_speed = WPA_GET_LE32(wan + 1);
1139 ul_speed = WPA_GET_LE32(wan + 5);
1143 if (dl_speed >= 0xffffff)
1144 dl_bandwidth = dl_speed / 255 * (255 - dl_load);
1146 dl_bandwidth = dl_speed * (255 - dl_load) / 255;
1148 if (ul_speed >= 0xffffff)
1149 ul_bandwidth = ul_speed / 255 * (255 - ul_load);
1151 ul_bandwidth = ul_speed * (255 - ul_load) / 255;
1153 res = interworking_home_sp_cred(wpa_s, cred, bss->anqp ?
1154 bss->anqp->domain_name : NULL);
1156 if (cred->min_dl_bandwidth_home > dl_bandwidth)
1158 if (cred->min_ul_bandwidth_home > ul_bandwidth)
1161 if (cred->min_dl_bandwidth_roaming > dl_bandwidth)
1163 if (cred->min_ul_bandwidth_roaming > ul_bandwidth)
1171 static int cred_over_max_bss_load(struct wpa_supplicant *wpa_s,
1172 struct wpa_cred *cred, struct wpa_bss *bss)
1177 if (!cred->max_bss_load)
1178 return 0; /* No BSS Load constraint specified */
1180 ie = wpa_bss_get_ie(bss, WLAN_EID_BSS_LOAD);
1181 if (ie == NULL || ie[1] < 3)
1182 return 0; /* No BSS Load advertised */
1184 res = interworking_home_sp_cred(wpa_s, cred, bss->anqp ?
1185 bss->anqp->domain_name : NULL);
1187 return 0; /* Not a home network */
1189 return ie[4] > cred->max_bss_load;
1193 static int has_proto_match(const u8 *pos, const u8 *end, u8 proto)
1195 while (pos + 4 <= end) {
1196 if (pos[0] == proto && pos[3] == 1 /* Open */)
1205 static int has_proto_port_match(const u8 *pos, const u8 *end, u8 proto,
1208 while (pos + 4 <= end) {
1209 if (pos[0] == proto && WPA_GET_LE16(&pos[1]) == port &&
1210 pos[3] == 1 /* Open */)
1219 static int cred_conn_capab_missing(struct wpa_supplicant *wpa_s,
1220 struct wpa_cred *cred, struct wpa_bss *bss)
1223 const u8 *capab, *end;
1227 if (!cred->num_req_conn_capab)
1228 return 0; /* No connection capability constraint specified */
1230 if (bss->anqp == NULL || bss->anqp->hs20_connection_capability == NULL)
1231 return 0; /* No Connection Capability known - ignore constraint
1234 res = interworking_home_sp_cred(wpa_s, cred, bss->anqp ?
1235 bss->anqp->domain_name : NULL);
1237 return 0; /* No constraint in home network */
1239 capab = wpabuf_head(bss->anqp->hs20_connection_capability);
1240 end = capab + wpabuf_len(bss->anqp->hs20_connection_capability);
1242 for (i = 0; i < cred->num_req_conn_capab; i++) {
1243 ports = cred->req_conn_capab_port[i];
1245 if (!has_proto_match(capab, end,
1246 cred->req_conn_capab_proto[i]))
1249 for (j = 0; ports[j] > -1; j++) {
1250 if (!has_proto_port_match(
1252 cred->req_conn_capab_proto[i],
1263 static struct wpa_cred * interworking_credentials_available_roaming_consortium(
1264 struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw,
1267 struct wpa_cred *cred, *selected = NULL;
1269 int is_excluded = 0;
1271 ie = wpa_bss_get_ie(bss, WLAN_EID_ROAMING_CONSORTIUM);
1274 (bss->anqp == NULL || bss->anqp->roaming_consortium == NULL))
1277 if (wpa_s->conf->cred == NULL)
1280 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
1281 if (cred->roaming_consortium_len == 0)
1284 if (!roaming_consortium_match(ie,
1286 bss->anqp->roaming_consortium :
1288 cred->roaming_consortium,
1289 cred->roaming_consortium_len))
1292 if (cred_no_required_oi_match(cred, bss))
1294 if (!ignore_bw && cred_below_min_backhaul(wpa_s, cred, bss))
1296 if (!ignore_bw && cred_over_max_bss_load(wpa_s, cred, bss))
1298 if (!ignore_bw && cred_conn_capab_missing(wpa_s, cred, bss))
1300 if (cred_excluded_ssid(cred, bss)) {
1301 if (excluded == NULL)
1303 if (selected == NULL) {
1308 if (selected == NULL || is_excluded ||
1309 cred_prio_cmp(selected, cred) < 0) {
1317 *excluded = is_excluded;
1323 static int interworking_set_eap_params(struct wpa_ssid *ssid,
1324 struct wpa_cred *cred, int ttls)
1326 if (cred->eap_method) {
1327 ttls = cred->eap_method->vendor == EAP_VENDOR_IETF &&
1328 cred->eap_method->method == EAP_TYPE_TTLS;
1330 os_free(ssid->eap.eap_methods);
1331 ssid->eap.eap_methods =
1332 os_malloc(sizeof(struct eap_method_type) * 2);
1333 if (ssid->eap.eap_methods == NULL)
1335 os_memcpy(ssid->eap.eap_methods, cred->eap_method,
1336 sizeof(*cred->eap_method));
1337 ssid->eap.eap_methods[1].vendor = EAP_VENDOR_IETF;
1338 ssid->eap.eap_methods[1].method = EAP_TYPE_NONE;
1341 if (ttls && cred->username && cred->username[0]) {
1344 /* Use anonymous NAI in Phase 1 */
1345 pos = os_strchr(cred->username, '@');
1347 size_t buflen = 9 + os_strlen(pos) + 1;
1348 anon = os_malloc(buflen);
1351 os_snprintf(anon, buflen, "anonymous%s", pos);
1352 } else if (cred->realm) {
1353 size_t buflen = 10 + os_strlen(cred->realm) + 1;
1354 anon = os_malloc(buflen);
1357 os_snprintf(anon, buflen, "anonymous@%s", cred->realm);
1359 anon = os_strdup("anonymous");
1363 if (wpa_config_set_quoted(ssid, "anonymous_identity", anon) <
1371 if (cred->username && cred->username[0] &&
1372 wpa_config_set_quoted(ssid, "identity", cred->username) < 0)
1375 if (cred->password && cred->password[0]) {
1376 if (cred->ext_password &&
1377 wpa_config_set(ssid, "password", cred->password, 0) < 0)
1379 if (!cred->ext_password &&
1380 wpa_config_set_quoted(ssid, "password", cred->password) <
1385 if (cred->client_cert && cred->client_cert[0] &&
1386 wpa_config_set_quoted(ssid, "client_cert", cred->client_cert) < 0)
1390 if (cred->private_key &&
1391 os_strncmp(cred->private_key, "keystore://", 11) == 0) {
1392 /* Use OpenSSL engine configuration for Android keystore */
1393 if (wpa_config_set_quoted(ssid, "engine_id", "keystore") < 0 ||
1394 wpa_config_set_quoted(ssid, "key_id",
1395 cred->private_key + 11) < 0 ||
1396 wpa_config_set(ssid, "engine", "1", 0) < 0)
1399 #endif /* ANDROID */
1400 if (cred->private_key && cred->private_key[0] &&
1401 wpa_config_set_quoted(ssid, "private_key", cred->private_key) < 0)
1404 if (cred->private_key_passwd && cred->private_key_passwd[0] &&
1405 wpa_config_set_quoted(ssid, "private_key_passwd",
1406 cred->private_key_passwd) < 0)
1410 os_free(ssid->eap.phase1);
1411 ssid->eap.phase1 = os_strdup(cred->phase1);
1414 os_free(ssid->eap.phase2);
1415 ssid->eap.phase2 = os_strdup(cred->phase2);
1418 if (cred->ca_cert && cred->ca_cert[0] &&
1419 wpa_config_set_quoted(ssid, "ca_cert", cred->ca_cert) < 0)
1422 if (cred->domain_suffix_match && cred->domain_suffix_match[0] &&
1423 wpa_config_set_quoted(ssid, "domain_suffix_match",
1424 cred->domain_suffix_match) < 0)
1427 ssid->eap.ocsp = cred->ocsp;
1433 static int interworking_connect_roaming_consortium(
1434 struct wpa_supplicant *wpa_s, struct wpa_cred *cred,
1435 struct wpa_bss *bss)
1437 struct wpa_ssid *ssid;
1439 wpa_printf(MSG_DEBUG, "Interworking: Connect with " MACSTR " based on "
1440 "roaming consortium match", MAC2STR(bss->bssid));
1442 if (already_connected(wpa_s, cred, bss)) {
1443 wpa_msg(wpa_s, MSG_INFO, INTERWORKING_ALREADY_CONNECTED MACSTR,
1444 MAC2STR(bss->bssid));
1448 remove_duplicate_network(wpa_s, cred, bss);
1450 ssid = wpa_config_add_network(wpa_s->conf);
1453 ssid->parent_cred = cred;
1454 wpas_notify_network_added(wpa_s, ssid);
1455 wpa_config_set_network_defaults(ssid);
1456 ssid->priority = cred->priority;
1457 ssid->temporary = 1;
1458 ssid->ssid = os_zalloc(bss->ssid_len + 1);
1459 if (ssid->ssid == NULL)
1461 os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
1462 ssid->ssid_len = bss->ssid_len;
1464 if (interworking_set_hs20_params(wpa_s, ssid) < 0)
1467 if (cred->eap_method == NULL) {
1468 wpa_printf(MSG_DEBUG, "Interworking: No EAP method set for "
1469 "credential using roaming consortium");
1473 if (interworking_set_eap_params(
1475 cred->eap_method->vendor == EAP_VENDOR_IETF &&
1476 cred->eap_method->method == EAP_TYPE_TTLS) < 0)
1479 wpa_s->next_ssid = ssid;
1480 wpa_config_update_prio_list(wpa_s->conf);
1481 interworking_reconnect(wpa_s);
1486 wpas_notify_network_removed(wpa_s, ssid);
1487 wpa_config_remove_network(wpa_s->conf, ssid->id);
1492 static int interworking_connect_helper(struct wpa_supplicant *wpa_s,
1493 struct wpa_bss *bss, int allow_excluded)
1495 struct wpa_cred *cred, *cred_rc, *cred_3gpp;
1496 struct wpa_ssid *ssid;
1497 struct nai_realm *realm;
1498 struct nai_realm_eap *eap = NULL;
1501 int excluded = 0, *excl = allow_excluded ? &excluded : NULL;
1503 if (wpa_s->conf->cred == NULL || bss == NULL)
1505 if (disallowed_bssid(wpa_s, bss->bssid) ||
1506 disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len)) {
1507 wpa_printf(MSG_DEBUG, "Interworking: Reject connection to disallowed BSS "
1508 MACSTR, MAC2STR(bss->bssid));
1512 wpa_printf(MSG_DEBUG, "Interworking: Considering BSS " MACSTR
1513 " for connection (allow_excluded=%d)",
1514 MAC2STR(bss->bssid), allow_excluded);
1516 if (!wpa_bss_get_ie(bss, WLAN_EID_RSN)) {
1518 * We currently support only HS 2.0 networks and those are
1519 * required to use WPA2-Enterprise.
1521 wpa_printf(MSG_DEBUG, "Interworking: Network does not use "
1526 cred_rc = interworking_credentials_available_roaming_consortium(
1527 wpa_s, bss, 0, excl);
1529 wpa_printf(MSG_DEBUG, "Interworking: Highest roaming "
1530 "consortium matching credential priority %d "
1532 cred_rc->priority, cred_rc->sp_priority);
1533 if (allow_excluded && excl && !(*excl))
1537 cred = interworking_credentials_available_realm(wpa_s, bss, 0, excl);
1539 wpa_printf(MSG_DEBUG, "Interworking: Highest NAI Realm list "
1540 "matching credential priority %d sp_priority %d",
1541 cred->priority, cred->sp_priority);
1542 if (allow_excluded && excl && !(*excl))
1546 cred_3gpp = interworking_credentials_available_3gpp(wpa_s, bss, 0,
1549 wpa_printf(MSG_DEBUG, "Interworking: Highest 3GPP matching "
1550 "credential priority %d sp_priority %d",
1551 cred_3gpp->priority, cred_3gpp->sp_priority);
1552 if (allow_excluded && excl && !(*excl))
1556 if (!cred_rc && !cred && !cred_3gpp) {
1557 wpa_printf(MSG_DEBUG, "Interworking: No full credential matches - consider options without BW(etc.) limits");
1558 cred_rc = interworking_credentials_available_roaming_consortium(
1559 wpa_s, bss, 1, excl);
1561 wpa_printf(MSG_DEBUG, "Interworking: Highest roaming "
1562 "consortium matching credential priority %d "
1563 "sp_priority %d (ignore BW)",
1564 cred_rc->priority, cred_rc->sp_priority);
1565 if (allow_excluded && excl && !(*excl))
1569 cred = interworking_credentials_available_realm(wpa_s, bss, 1,
1572 wpa_printf(MSG_DEBUG, "Interworking: Highest NAI Realm "
1573 "list matching credential priority %d "
1574 "sp_priority %d (ignore BW)",
1575 cred->priority, cred->sp_priority);
1576 if (allow_excluded && excl && !(*excl))
1580 cred_3gpp = interworking_credentials_available_3gpp(wpa_s, bss,
1583 wpa_printf(MSG_DEBUG, "Interworking: Highest 3GPP "
1584 "matching credential priority %d "
1585 "sp_priority %d (ignore BW)",
1586 cred_3gpp->priority, cred_3gpp->sp_priority);
1587 if (allow_excluded && excl && !(*excl))
1593 (cred == NULL || cred_prio_cmp(cred_rc, cred) >= 0) &&
1594 (cred_3gpp == NULL || cred_prio_cmp(cred_rc, cred_3gpp) >= 0))
1595 return interworking_connect_roaming_consortium(wpa_s, cred_rc,
1599 (cred == NULL || cred_prio_cmp(cred_3gpp, cred) >= 0)) {
1600 return interworking_connect_3gpp(wpa_s, cred_3gpp, bss);
1604 wpa_printf(MSG_DEBUG, "Interworking: No matching credentials "
1605 "found for " MACSTR, MAC2STR(bss->bssid));
1609 realm = nai_realm_parse(bss->anqp ? bss->anqp->nai_realm : NULL,
1611 if (realm == NULL) {
1612 wpa_printf(MSG_DEBUG, "Interworking: Could not parse NAI "
1613 "Realm list from " MACSTR, MAC2STR(bss->bssid));
1617 for (i = 0; i < count; i++) {
1618 if (!nai_realm_match(&realm[i], cred->realm))
1620 eap = nai_realm_find_eap(cred, &realm[i]);
1626 wpa_printf(MSG_DEBUG, "Interworking: No matching credentials "
1627 "and EAP method found for " MACSTR,
1628 MAC2STR(bss->bssid));
1629 nai_realm_free(realm, count);
1633 wpa_printf(MSG_DEBUG, "Interworking: Connect with " MACSTR,
1634 MAC2STR(bss->bssid));
1636 if (already_connected(wpa_s, cred, bss)) {
1637 wpa_msg(wpa_s, MSG_INFO, INTERWORKING_ALREADY_CONNECTED MACSTR,
1638 MAC2STR(bss->bssid));
1639 nai_realm_free(realm, count);
1643 remove_duplicate_network(wpa_s, cred, bss);
1645 ssid = wpa_config_add_network(wpa_s->conf);
1647 nai_realm_free(realm, count);
1650 ssid->parent_cred = cred;
1651 wpas_notify_network_added(wpa_s, ssid);
1652 wpa_config_set_network_defaults(ssid);
1653 ssid->priority = cred->priority;
1654 ssid->temporary = 1;
1655 ssid->ssid = os_zalloc(bss->ssid_len + 1);
1656 if (ssid->ssid == NULL)
1658 os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
1659 ssid->ssid_len = bss->ssid_len;
1661 if (interworking_set_hs20_params(wpa_s, ssid) < 0)
1664 if (wpa_config_set(ssid, "eap", eap_get_name(EAP_VENDOR_IETF,
1665 eap->method), 0) < 0)
1668 switch (eap->method) {
1670 if (eap->inner_method) {
1671 os_snprintf(buf, sizeof(buf), "\"autheap=%s\"",
1672 eap_get_name(EAP_VENDOR_IETF,
1673 eap->inner_method));
1674 if (wpa_config_set(ssid, "phase2", buf, 0) < 0)
1678 switch (eap->inner_non_eap) {
1679 case NAI_REALM_INNER_NON_EAP_PAP:
1680 if (wpa_config_set(ssid, "phase2", "\"auth=PAP\"", 0) <
1684 case NAI_REALM_INNER_NON_EAP_CHAP:
1685 if (wpa_config_set(ssid, "phase2", "\"auth=CHAP\"", 0)
1689 case NAI_REALM_INNER_NON_EAP_MSCHAP:
1690 if (wpa_config_set(ssid, "phase2", "\"auth=MSCHAP\"",
1694 case NAI_REALM_INNER_NON_EAP_MSCHAPV2:
1695 if (wpa_config_set(ssid, "phase2", "\"auth=MSCHAPV2\"",
1700 /* EAP params were not set - assume TTLS/MSCHAPv2 */
1701 if (wpa_config_set(ssid, "phase2", "\"auth=MSCHAPV2\"",
1709 if (wpa_config_set(ssid, "phase1", "\"fast_provisioning=2\"",
1712 if (wpa_config_set(ssid, "pac_file",
1713 "\"blob://pac_interworking\"", 0) < 0)
1715 os_snprintf(buf, sizeof(buf), "\"auth=%s\"",
1716 eap_get_name(EAP_VENDOR_IETF,
1719 EAP_TYPE_MSCHAPV2));
1720 if (wpa_config_set(ssid, "phase2", buf, 0) < 0)
1727 if (interworking_set_eap_params(ssid, cred,
1728 eap->method == EAP_TYPE_TTLS) < 0)
1731 nai_realm_free(realm, count);
1733 wpa_s->next_ssid = ssid;
1734 wpa_config_update_prio_list(wpa_s->conf);
1735 interworking_reconnect(wpa_s);
1740 wpas_notify_network_removed(wpa_s, ssid);
1741 wpa_config_remove_network(wpa_s->conf, ssid->id);
1742 nai_realm_free(realm, count);
1747 int interworking_connect(struct wpa_supplicant *wpa_s, struct wpa_bss *bss)
1749 return interworking_connect_helper(wpa_s, bss, 1);
1754 static int interworking_pcsc_read_imsi(struct wpa_supplicant *wpa_s)
1758 if (wpa_s->imsi[0] && wpa_s->mnc_len)
1761 len = sizeof(wpa_s->imsi) - 1;
1762 if (scard_get_imsi(wpa_s->scard, wpa_s->imsi, &len)) {
1763 scard_deinit(wpa_s->scard);
1764 wpa_s->scard = NULL;
1765 wpa_msg(wpa_s, MSG_ERROR, "Could not read IMSI");
1768 wpa_s->imsi[len] = '\0';
1769 wpa_s->mnc_len = scard_get_mnc_len(wpa_s->scard);
1770 wpa_printf(MSG_DEBUG, "SCARD: IMSI %s (MNC length %d)",
1771 wpa_s->imsi, wpa_s->mnc_len);
1775 #endif /* PCSC_FUNCS */
1778 static struct wpa_cred * interworking_credentials_available_3gpp(
1779 struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw,
1782 struct wpa_cred *selected = NULL;
1783 #ifdef INTERWORKING_3GPP
1784 struct wpa_cred *cred;
1786 int is_excluded = 0;
1788 if (bss->anqp == NULL || bss->anqp->anqp_3gpp == NULL)
1791 #ifdef CONFIG_EAP_PROXY
1792 if (!wpa_s->imsi[0]) {
1794 wpa_printf(MSG_DEBUG, "Interworking: IMSI not available - try to read again through eap_proxy");
1795 wpa_s->mnc_len = eapol_sm_get_eap_proxy_imsi(wpa_s->eapol,
1798 if (wpa_s->mnc_len > 0) {
1799 wpa_s->imsi[len] = '\0';
1800 wpa_printf(MSG_DEBUG, "eap_proxy: IMSI %s (MNC length %d)",
1801 wpa_s->imsi, wpa_s->mnc_len);
1803 wpa_printf(MSG_DEBUG, "eap_proxy: IMSI not available");
1806 #endif /* CONFIG_EAP_PROXY */
1808 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
1816 if (cred->pcsc && wpa_s->scard) {
1817 if (interworking_pcsc_read_imsi(wpa_s) < 0)
1820 mnc_len = wpa_s->mnc_len;
1823 #endif /* PCSC_FUNCS */
1824 #ifdef CONFIG_EAP_PROXY
1825 if (cred->pcsc && wpa_s->mnc_len > 0 && wpa_s->imsi[0]) {
1827 mnc_len = wpa_s->mnc_len;
1830 #endif /* CONFIG_EAP_PROXY */
1832 if (cred->imsi == NULL || !cred->imsi[0] ||
1833 (!wpa_s->conf->external_sim &&
1834 (cred->milenage == NULL || !cred->milenage[0])))
1837 sep = os_strchr(cred->imsi, '-');
1839 (sep - cred->imsi != 5 && sep - cred->imsi != 6))
1841 mnc_len = sep - cred->imsi - 3;
1842 os_memcpy(imsi_buf, cred->imsi, 3 + mnc_len);
1844 msin_len = os_strlen(cred->imsi);
1845 if (3 + mnc_len + msin_len >= sizeof(imsi_buf) - 1)
1846 msin_len = sizeof(imsi_buf) - 3 - mnc_len - 1;
1847 os_memcpy(&imsi_buf[3 + mnc_len], sep, msin_len);
1848 imsi_buf[3 + mnc_len + msin_len] = '\0';
1851 #if defined(PCSC_FUNCS) || defined(CONFIG_EAP_PROXY)
1853 #endif /* PCSC_FUNCS || CONFIG_EAP_PROXY */
1854 wpa_printf(MSG_DEBUG, "Interworking: Parsing 3GPP info from "
1855 MACSTR, MAC2STR(bss->bssid));
1856 ret = plmn_id_match(bss->anqp->anqp_3gpp, imsi, mnc_len);
1857 wpa_printf(MSG_DEBUG, "PLMN match %sfound", ret ? "" : "not ");
1859 if (cred_no_required_oi_match(cred, bss))
1862 cred_below_min_backhaul(wpa_s, cred, bss))
1865 cred_over_max_bss_load(wpa_s, cred, bss))
1868 cred_conn_capab_missing(wpa_s, cred, bss))
1870 if (cred_excluded_ssid(cred, bss)) {
1871 if (excluded == NULL)
1873 if (selected == NULL) {
1878 if (selected == NULL || is_excluded ||
1879 cred_prio_cmp(selected, cred) < 0) {
1888 *excluded = is_excluded;
1889 #endif /* INTERWORKING_3GPP */
1894 static struct wpa_cred * interworking_credentials_available_realm(
1895 struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw,
1898 struct wpa_cred *cred, *selected = NULL;
1899 struct nai_realm *realm;
1901 int is_excluded = 0;
1903 if (bss->anqp == NULL || bss->anqp->nai_realm == NULL)
1906 if (wpa_s->conf->cred == NULL)
1909 wpa_printf(MSG_DEBUG, "Interworking: Parsing NAI Realm list from "
1910 MACSTR, MAC2STR(bss->bssid));
1911 realm = nai_realm_parse(bss->anqp->nai_realm, &count);
1912 if (realm == NULL) {
1913 wpa_printf(MSG_DEBUG, "Interworking: Could not parse NAI "
1914 "Realm list from " MACSTR, MAC2STR(bss->bssid));
1918 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
1919 if (cred->realm == NULL)
1922 for (i = 0; i < count; i++) {
1923 if (!nai_realm_match(&realm[i], cred->realm))
1925 if (nai_realm_find_eap(cred, &realm[i])) {
1926 if (cred_no_required_oi_match(cred, bss))
1929 cred_below_min_backhaul(wpa_s, cred, bss))
1932 cred_over_max_bss_load(wpa_s, cred, bss))
1935 cred_conn_capab_missing(wpa_s, cred, bss))
1937 if (cred_excluded_ssid(cred, bss)) {
1938 if (excluded == NULL)
1940 if (selected == NULL) {
1945 if (selected == NULL || is_excluded ||
1946 cred_prio_cmp(selected, cred) < 0)
1957 nai_realm_free(realm, count);
1960 *excluded = is_excluded;
1966 static struct wpa_cred * interworking_credentials_available_helper(
1967 struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw,
1970 struct wpa_cred *cred, *cred2;
1971 int excluded1, excluded2;
1973 if (disallowed_bssid(wpa_s, bss->bssid) ||
1974 disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len)) {
1975 wpa_printf(MSG_DEBUG, "Interworking: Ignore disallowed BSS "
1976 MACSTR, MAC2STR(bss->bssid));
1980 cred = interworking_credentials_available_realm(wpa_s, bss, ignore_bw,
1982 cred2 = interworking_credentials_available_3gpp(wpa_s, bss, ignore_bw,
1984 if (cred && cred2 &&
1985 (cred_prio_cmp(cred2, cred) >= 0 || (!excluded2 && excluded1))) {
1987 excluded1 = excluded2;
1991 excluded1 = excluded2;
1994 cred2 = interworking_credentials_available_roaming_consortium(
1995 wpa_s, bss, ignore_bw, &excluded2);
1996 if (cred && cred2 &&
1997 (cred_prio_cmp(cred2, cred) >= 0 || (!excluded2 && excluded1))) {
1999 excluded1 = excluded2;
2003 excluded1 = excluded2;
2007 *excluded = excluded1;
2012 static struct wpa_cred * interworking_credentials_available(
2013 struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int *excluded)
2015 struct wpa_cred *cred;
2019 cred = interworking_credentials_available_helper(wpa_s, bss, 0,
2023 return interworking_credentials_available_helper(wpa_s, bss, 1,
2028 int domain_name_list_contains(struct wpabuf *domain_names,
2029 const char *domain, int exact_match)
2031 const u8 *pos, *end;
2034 len = os_strlen(domain);
2035 pos = wpabuf_head(domain_names);
2036 end = pos + wpabuf_len(domain_names);
2038 while (pos + 1 < end) {
2039 if (pos + 1 + pos[0] > end)
2042 wpa_hexdump_ascii(MSG_DEBUG, "Interworking: AP domain name",
2044 if (pos[0] == len &&
2045 os_strncasecmp(domain, (const char *) (pos + 1), len) == 0)
2047 if (!exact_match && pos[0] > len && pos[pos[0] - len] == '.') {
2048 const char *ap = (const char *) (pos + 1);
2049 int offset = pos[0] - len;
2050 if (os_strncasecmp(domain, ap + offset, len) == 0)
2061 int interworking_home_sp_cred(struct wpa_supplicant *wpa_s,
2062 struct wpa_cred *cred,
2063 struct wpabuf *domain_names)
2067 #ifdef INTERWORKING_3GPP
2068 char nai[100], *realm;
2075 else if (cred->pcsc && wpa_s->scard) {
2076 if (interworking_pcsc_read_imsi(wpa_s) < 0)
2079 mnc_len = wpa_s->mnc_len;
2081 #endif /* PCSC_FUNCS */
2082 #ifdef CONFIG_EAP_PROXY
2083 else if (cred->pcsc && wpa_s->mnc_len > 0 && wpa_s->imsi[0]) {
2085 mnc_len = wpa_s->mnc_len;
2087 #endif /* CONFIG_EAP_PROXY */
2089 imsi && build_root_nai(nai, sizeof(nai), imsi, mnc_len, 0) == 0) {
2090 realm = os_strchr(nai, '@');
2093 wpa_printf(MSG_DEBUG, "Interworking: Search for match "
2094 "with SIM/USIM domain %s", realm);
2096 domain_name_list_contains(domain_names, realm, 1))
2101 #endif /* INTERWORKING_3GPP */
2103 if (domain_names == NULL || cred->domain == NULL)
2106 for (i = 0; i < cred->num_domain; i++) {
2107 wpa_printf(MSG_DEBUG, "Interworking: Search for match with "
2108 "home SP FQDN %s", cred->domain[i]);
2109 if (domain_name_list_contains(domain_names, cred->domain[i], 1))
2117 static int interworking_home_sp(struct wpa_supplicant *wpa_s,
2118 struct wpabuf *domain_names)
2120 struct wpa_cred *cred;
2122 if (domain_names == NULL || wpa_s->conf->cred == NULL)
2125 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
2126 int res = interworking_home_sp_cred(wpa_s, cred, domain_names);
2135 static int interworking_find_network_match(struct wpa_supplicant *wpa_s)
2137 struct wpa_bss *bss;
2138 struct wpa_ssid *ssid;
2140 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
2141 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
2142 if (wpas_network_disabled(wpa_s, ssid) ||
2143 ssid->mode != WPAS_MODE_INFRA)
2145 if (ssid->ssid_len != bss->ssid_len ||
2146 os_memcmp(ssid->ssid, bss->ssid, ssid->ssid_len) !=
2150 * TODO: Consider more accurate matching of security
2151 * configuration similarly to what is done in events.c
2161 static int roaming_partner_match(struct wpa_supplicant *wpa_s,
2162 struct roaming_partner *partner,
2163 struct wpabuf *domain_names)
2165 wpa_printf(MSG_DEBUG, "Interworking: Comparing roaming_partner info fqdn='%s' exact_match=%d priority=%u country='%s'",
2166 partner->fqdn, partner->exact_match, partner->priority,
2168 wpa_hexdump_ascii(MSG_DEBUG, "Interworking: Domain names",
2169 wpabuf_head(domain_names),
2170 wpabuf_len(domain_names));
2171 if (!domain_name_list_contains(domain_names, partner->fqdn,
2172 partner->exact_match))
2174 /* TODO: match Country */
2179 static u8 roaming_prio(struct wpa_supplicant *wpa_s, struct wpa_cred *cred,
2180 struct wpa_bss *bss)
2184 if (bss->anqp == NULL || bss->anqp->domain_name == NULL) {
2185 wpa_printf(MSG_DEBUG, "Interworking: No ANQP domain name info -> use default roaming partner priority 128");
2186 return 128; /* cannot check preference with domain name */
2189 if (interworking_home_sp_cred(wpa_s, cred, bss->anqp->domain_name) > 0)
2191 wpa_printf(MSG_DEBUG, "Interworking: Determined to be home SP -> use maximum preference 0 as roaming partner priority");
2192 return 0; /* max preference for home SP network */
2195 for (i = 0; i < cred->num_roaming_partner; i++) {
2196 if (roaming_partner_match(wpa_s, &cred->roaming_partner[i],
2197 bss->anqp->domain_name)) {
2198 wpa_printf(MSG_DEBUG, "Interworking: Roaming partner preference match - priority %u",
2199 cred->roaming_partner[i].priority);
2200 return cred->roaming_partner[i].priority;
2204 wpa_printf(MSG_DEBUG, "Interworking: No roaming partner preference match - use default roaming partner priority 128");
2209 static struct wpa_bss * pick_best_roaming_partner(struct wpa_supplicant *wpa_s,
2210 struct wpa_bss *selected,
2211 struct wpa_cred *cred)
2213 struct wpa_bss *bss;
2215 struct wpa_cred *cred2;
2218 * Check if any other BSS is operated by a more preferred roaming
2222 best_prio = roaming_prio(wpa_s, cred, selected);
2223 wpa_printf(MSG_DEBUG, "Interworking: roaming_prio=%u for selected BSS "
2224 MACSTR " (cred=%d)", best_prio, MAC2STR(selected->bssid),
2227 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
2228 if (bss == selected)
2230 cred2 = interworking_credentials_available(wpa_s, bss, NULL);
2233 if (!wpa_bss_get_ie(bss, WLAN_EID_RSN))
2235 prio = roaming_prio(wpa_s, cred2, bss);
2236 wpa_printf(MSG_DEBUG, "Interworking: roaming_prio=%u for BSS "
2237 MACSTR " (cred=%d)", prio, MAC2STR(bss->bssid),
2239 if (prio < best_prio) {
2240 int bh1, bh2, load1, load2, conn1, conn2;
2241 bh1 = cred_below_min_backhaul(wpa_s, cred, selected);
2242 load1 = cred_over_max_bss_load(wpa_s, cred, selected);
2243 conn1 = cred_conn_capab_missing(wpa_s, cred, selected);
2244 bh2 = cred_below_min_backhaul(wpa_s, cred2, bss);
2245 load2 = cred_over_max_bss_load(wpa_s, cred2, bss);
2246 conn2 = cred_conn_capab_missing(wpa_s, cred2, bss);
2247 wpa_printf(MSG_DEBUG, "Interworking: old: %d %d %d new: %d %d %d",
2248 bh1, load1, conn1, bh2, load2, conn2);
2249 if (bh1 || load1 || conn1 || !(bh2 || load2 || conn2)) {
2250 wpa_printf(MSG_DEBUG, "Interworking: Better roaming partner " MACSTR " selected", MAC2STR(bss->bssid));
2261 static void interworking_select_network(struct wpa_supplicant *wpa_s)
2263 struct wpa_bss *bss, *selected = NULL, *selected_home = NULL;
2264 struct wpa_bss *selected2 = NULL, *selected2_home = NULL;
2265 unsigned int count = 0;
2268 struct wpa_cred *cred, *selected_cred = NULL;
2269 struct wpa_cred *selected_home_cred = NULL;
2270 struct wpa_cred *selected2_cred = NULL;
2271 struct wpa_cred *selected2_home_cred = NULL;
2273 wpa_s->network_select = 0;
2275 wpa_printf(MSG_DEBUG, "Interworking: Select network (auto_select=%d)",
2276 wpa_s->auto_select);
2277 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
2279 int bh, bss_load, conn_capab;
2280 cred = interworking_credentials_available(wpa_s, bss,
2284 if (!wpa_bss_get_ie(bss, WLAN_EID_RSN)) {
2286 * We currently support only HS 2.0 networks and those
2287 * are required to use WPA2-Enterprise.
2289 wpa_printf(MSG_DEBUG, "Interworking: Credential match "
2290 "with " MACSTR " but network does not use "
2291 "RSN", MAC2STR(bss->bssid));
2296 res = interworking_home_sp(wpa_s, bss->anqp ?
2297 bss->anqp->domain_name : NULL);
2304 bh = cred_below_min_backhaul(wpa_s, cred, bss);
2305 bss_load = cred_over_max_bss_load(wpa_s, cred, bss);
2306 conn_capab = cred_conn_capab_missing(wpa_s, cred, bss);
2307 wpa_msg(wpa_s, MSG_INFO, "%s" MACSTR " type=%s%s%s%s id=%d priority=%d sp_priority=%d",
2308 excluded ? INTERWORKING_BLACKLISTED : INTERWORKING_AP,
2309 MAC2STR(bss->bssid), type,
2310 bh ? " below_min_backhaul=1" : "",
2311 bss_load ? " over_max_bss_load=1" : "",
2312 conn_capab ? " conn_capab_missing=1" : "",
2313 cred->id, cred->priority, cred->sp_priority);
2316 if (wpa_s->auto_select ||
2317 (wpa_s->conf->auto_interworking &&
2318 wpa_s->auto_network_select)) {
2319 if (bh || bss_load || conn_capab) {
2320 if (selected2_cred == NULL ||
2321 cred_prio_cmp(cred, selected2_cred) > 0) {
2322 wpa_printf(MSG_DEBUG, "Interworking: Mark as selected2");
2324 selected2_cred = cred;
2327 (selected2_home_cred == NULL ||
2328 cred_prio_cmp(cred, selected2_home_cred) >
2330 wpa_printf(MSG_DEBUG, "Interworking: Mark as selected2_home");
2331 selected2_home = bss;
2332 selected2_home_cred = cred;
2335 if (selected_cred == NULL ||
2336 cred_prio_cmp(cred, selected_cred) > 0) {
2337 wpa_printf(MSG_DEBUG, "Interworking: Mark as selected");
2339 selected_cred = cred;
2342 (selected_home_cred == NULL ||
2343 cred_prio_cmp(cred, selected_home_cred) >
2345 wpa_printf(MSG_DEBUG, "Interworking: Mark as selected_home");
2346 selected_home = bss;
2347 selected_home_cred = cred;
2353 if (selected_home && selected_home != selected &&
2354 selected_home_cred &&
2355 (selected_cred == NULL ||
2356 cred_prio_cmp(selected_home_cred, selected_cred) >= 0)) {
2357 /* Prefer network operated by the Home SP */
2358 wpa_printf(MSG_DEBUG, "Interworking: Overrided selected with selected_home");
2359 selected = selected_home;
2360 selected_cred = selected_home_cred;
2364 if (selected2_home) {
2365 wpa_printf(MSG_DEBUG, "Interworking: Use home BSS with BW limit mismatch since no other network could be selected");
2366 selected = selected2_home;
2367 selected_cred = selected2_home_cred;
2368 } else if (selected2) {
2369 wpa_printf(MSG_DEBUG, "Interworking: Use visited BSS with BW limit mismatch since no other network could be selected");
2370 selected = selected2;
2371 selected_cred = selected2_cred;
2377 * No matching network was found based on configured
2378 * credentials. Check whether any of the enabled network blocks
2379 * have matching APs.
2381 if (interworking_find_network_match(wpa_s)) {
2382 wpa_printf(MSG_DEBUG, "Interworking: Possible BSS "
2383 "match for enabled network configurations");
2384 if (wpa_s->auto_select)
2385 interworking_reconnect(wpa_s);
2389 if (wpa_s->auto_network_select) {
2390 wpa_printf(MSG_DEBUG, "Interworking: Continue "
2391 "scanning after ANQP fetch");
2392 wpa_supplicant_req_scan(wpa_s, wpa_s->scan_interval,
2397 wpa_msg(wpa_s, MSG_INFO, INTERWORKING_NO_MATCH "No network "
2398 "with matching credentials found");
2402 wpa_printf(MSG_DEBUG, "Interworking: Selected " MACSTR,
2403 MAC2STR(selected->bssid));
2404 selected = pick_best_roaming_partner(wpa_s, selected,
2406 wpa_printf(MSG_DEBUG, "Interworking: Selected " MACSTR
2407 " (after best roaming partner selection)",
2408 MAC2STR(selected->bssid));
2409 wpa_msg(wpa_s, MSG_INFO, INTERWORKING_SELECTED MACSTR,
2410 MAC2STR(selected->bssid));
2411 interworking_connect(wpa_s, selected);
2416 static struct wpa_bss_anqp *
2417 interworking_match_anqp_info(struct wpa_supplicant *wpa_s, struct wpa_bss *bss)
2419 struct wpa_bss *other;
2421 if (is_zero_ether_addr(bss->hessid))
2422 return NULL; /* Cannot be in the same homegenous ESS */
2424 dl_list_for_each(other, &wpa_s->bss, struct wpa_bss, list) {
2427 if (other->anqp == NULL)
2429 if (other->anqp->roaming_consortium == NULL &&
2430 other->anqp->nai_realm == NULL &&
2431 other->anqp->anqp_3gpp == NULL &&
2432 other->anqp->domain_name == NULL)
2434 if (!(other->flags & WPA_BSS_ANQP_FETCH_TRIED))
2436 if (os_memcmp(bss->hessid, other->hessid, ETH_ALEN) != 0)
2438 if (bss->ssid_len != other->ssid_len ||
2439 os_memcmp(bss->ssid, other->ssid, bss->ssid_len) != 0)
2442 wpa_printf(MSG_DEBUG, "Interworking: Share ANQP data with "
2443 "already fetched BSSID " MACSTR " and " MACSTR,
2444 MAC2STR(other->bssid), MAC2STR(bss->bssid));
2445 other->anqp->users++;
2453 static void interworking_next_anqp_fetch(struct wpa_supplicant *wpa_s)
2455 struct wpa_bss *bss;
2459 wpa_printf(MSG_DEBUG, "Interworking: next_anqp_fetch - "
2460 "fetch_anqp_in_progress=%d fetch_osu_icon_in_progress=%d",
2461 wpa_s->fetch_anqp_in_progress,
2462 wpa_s->fetch_osu_icon_in_progress);
2464 if (eloop_terminated() || !wpa_s->fetch_anqp_in_progress) {
2465 wpa_printf(MSG_DEBUG, "Interworking: Stop next-ANQP-fetch");
2469 if (wpa_s->fetch_osu_icon_in_progress) {
2470 wpa_printf(MSG_DEBUG, "Interworking: Next icon (in progress)");
2471 hs20_next_osu_icon(wpa_s);
2475 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
2476 if (!(bss->caps & IEEE80211_CAP_ESS))
2478 ie = wpa_bss_get_ie(bss, WLAN_EID_EXT_CAPAB);
2479 if (ie == NULL || ie[1] < 4 || !(ie[5] & 0x80))
2480 continue; /* AP does not support Interworking */
2481 if (disallowed_bssid(wpa_s, bss->bssid) ||
2482 disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len))
2483 continue; /* Disallowed BSS */
2485 if (!(bss->flags & WPA_BSS_ANQP_FETCH_TRIED)) {
2486 if (bss->anqp == NULL) {
2487 bss->anqp = interworking_match_anqp_info(wpa_s,
2490 /* Shared data already fetched */
2493 bss->anqp = wpa_bss_anqp_alloc();
2494 if (bss->anqp == NULL)
2498 bss->flags |= WPA_BSS_ANQP_FETCH_TRIED;
2499 wpa_msg(wpa_s, MSG_INFO, "Starting ANQP fetch for "
2500 MACSTR, MAC2STR(bss->bssid));
2501 interworking_anqp_send_req(wpa_s, bss);
2507 if (wpa_s->fetch_osu_info) {
2508 if (wpa_s->num_prov_found == 0 &&
2509 wpa_s->num_osu_scans < 3) {
2510 wpa_printf(MSG_DEBUG, "HS 2.0: No OSU providers seen - try to scan again");
2511 hs20_start_osu_scan(wpa_s);
2514 wpa_printf(MSG_DEBUG, "Interworking: Next icon");
2515 hs20_osu_icon_fetch(wpa_s);
2518 wpa_msg(wpa_s, MSG_INFO, "ANQP fetch completed");
2519 wpa_s->fetch_anqp_in_progress = 0;
2520 if (wpa_s->network_select)
2521 interworking_select_network(wpa_s);
2526 void interworking_start_fetch_anqp(struct wpa_supplicant *wpa_s)
2528 struct wpa_bss *bss;
2530 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list)
2531 bss->flags &= ~WPA_BSS_ANQP_FETCH_TRIED;
2533 wpa_s->fetch_anqp_in_progress = 1;
2534 interworking_next_anqp_fetch(wpa_s);
2538 int interworking_fetch_anqp(struct wpa_supplicant *wpa_s)
2540 if (wpa_s->fetch_anqp_in_progress || wpa_s->network_select)
2543 wpa_s->network_select = 0;
2544 wpa_s->fetch_all_anqp = 1;
2545 wpa_s->fetch_osu_info = 0;
2547 interworking_start_fetch_anqp(wpa_s);
2553 void interworking_stop_fetch_anqp(struct wpa_supplicant *wpa_s)
2555 if (!wpa_s->fetch_anqp_in_progress)
2558 wpa_s->fetch_anqp_in_progress = 0;
2562 int anqp_send_req(struct wpa_supplicant *wpa_s, const u8 *dst,
2563 u16 info_ids[], size_t num_ids, u32 subtypes)
2566 struct wpabuf *hs20_buf = NULL;
2569 struct wpa_bss *bss;
2572 freq = wpa_s->assoc_freq;
2573 bss = wpa_bss_get_bssid(wpa_s, dst);
2575 wpa_bss_anqp_unshare_alloc(bss);
2581 wpa_printf(MSG_DEBUG, "ANQP: Query Request to " MACSTR " for %u id(s)",
2582 MAC2STR(dst), (unsigned int) num_ids);
2585 if (subtypes != 0) {
2586 hs20_buf = wpabuf_alloc(100);
2587 if (hs20_buf == NULL)
2589 hs20_put_anqp_req(subtypes, NULL, 0, hs20_buf);
2591 #endif /* CONFIG_HS20 */
2593 buf = anqp_build_req(info_ids, num_ids, hs20_buf);
2594 wpabuf_free(hs20_buf);
2598 res = gas_query_req(wpa_s->gas, dst, freq, buf, anqp_resp_cb, wpa_s);
2600 wpa_printf(MSG_DEBUG, "ANQP: Failed to send Query Request");
2604 wpa_printf(MSG_DEBUG, "ANQP: Query started with dialog token "
2611 static void interworking_parse_rx_anqp_resp(struct wpa_supplicant *wpa_s,
2612 struct wpa_bss *bss, const u8 *sa,
2614 const u8 *data, size_t slen)
2616 const u8 *pos = data;
2617 struct wpa_bss_anqp *anqp = NULL;
2620 #endif /* CONFIG_HS20 */
2626 case ANQP_CAPABILITY_LIST:
2627 wpa_msg(wpa_s, MSG_INFO, "RX-ANQP " MACSTR
2628 " ANQP Capability list", MAC2STR(sa));
2630 case ANQP_VENUE_NAME:
2631 wpa_msg(wpa_s, MSG_INFO, "RX-ANQP " MACSTR
2632 " Venue Name", MAC2STR(sa));
2633 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: Venue Name", pos, slen);
2635 wpabuf_free(anqp->venue_name);
2636 anqp->venue_name = wpabuf_alloc_copy(pos, slen);
2639 case ANQP_NETWORK_AUTH_TYPE:
2640 wpa_msg(wpa_s, MSG_INFO, "RX-ANQP " MACSTR
2641 " Network Authentication Type information",
2643 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: Network Authentication "
2646 wpabuf_free(anqp->network_auth_type);
2647 anqp->network_auth_type = wpabuf_alloc_copy(pos, slen);
2650 case ANQP_ROAMING_CONSORTIUM:
2651 wpa_msg(wpa_s, MSG_INFO, "RX-ANQP " MACSTR
2652 " Roaming Consortium list", MAC2STR(sa));
2653 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: Roaming Consortium",
2656 wpabuf_free(anqp->roaming_consortium);
2657 anqp->roaming_consortium = wpabuf_alloc_copy(pos, slen);
2660 case ANQP_IP_ADDR_TYPE_AVAILABILITY:
2661 wpa_msg(wpa_s, MSG_INFO, "RX-ANQP " MACSTR
2662 " IP Address Type Availability information",
2664 wpa_hexdump(MSG_MSGDUMP, "ANQP: IP Address Availability",
2667 wpabuf_free(anqp->ip_addr_type_availability);
2668 anqp->ip_addr_type_availability =
2669 wpabuf_alloc_copy(pos, slen);
2672 case ANQP_NAI_REALM:
2673 wpa_msg(wpa_s, MSG_INFO, "RX-ANQP " MACSTR
2674 " NAI Realm list", MAC2STR(sa));
2675 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: NAI Realm", pos, slen);
2677 wpabuf_free(anqp->nai_realm);
2678 anqp->nai_realm = wpabuf_alloc_copy(pos, slen);
2681 case ANQP_3GPP_CELLULAR_NETWORK:
2682 wpa_msg(wpa_s, MSG_INFO, "RX-ANQP " MACSTR
2683 " 3GPP Cellular Network information", MAC2STR(sa));
2684 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: 3GPP Cellular Network",
2687 wpabuf_free(anqp->anqp_3gpp);
2688 anqp->anqp_3gpp = wpabuf_alloc_copy(pos, slen);
2691 case ANQP_DOMAIN_NAME:
2692 wpa_msg(wpa_s, MSG_INFO, "RX-ANQP " MACSTR
2693 " Domain Name list", MAC2STR(sa));
2694 wpa_hexdump_ascii(MSG_MSGDUMP, "ANQP: Domain Name", pos, slen);
2696 wpabuf_free(anqp->domain_name);
2697 anqp->domain_name = wpabuf_alloc_copy(pos, slen);
2700 case ANQP_VENDOR_SPECIFIC:
2704 switch (WPA_GET_BE24(pos)) {
2716 case HS20_ANQP_OUI_TYPE:
2717 hs20_parse_rx_hs20_anqp_resp(wpa_s, sa, pos,
2721 wpa_printf(MSG_DEBUG, "HS20: Unsupported ANQP "
2722 "vendor type %u", type);
2726 #endif /* CONFIG_HS20 */
2728 wpa_printf(MSG_DEBUG, "Interworking: Unsupported "
2729 "vendor-specific ANQP OUI %06x",
2735 wpa_printf(MSG_DEBUG, "Interworking: Unsupported ANQP Info ID "
2742 void anqp_resp_cb(void *ctx, const u8 *dst, u8 dialog_token,
2743 enum gas_query_result result,
2744 const struct wpabuf *adv_proto,
2745 const struct wpabuf *resp, u16 status_code)
2747 struct wpa_supplicant *wpa_s = ctx;
2752 struct wpa_bss *bss = NULL, *tmp;
2754 wpa_printf(MSG_DEBUG, "Interworking: anqp_resp_cb dst=" MACSTR
2755 " dialog_token=%u result=%d status_code=%u",
2756 MAC2STR(dst), dialog_token, result, status_code);
2757 if (result != GAS_QUERY_SUCCESS) {
2758 if (wpa_s->fetch_osu_icon_in_progress)
2759 hs20_icon_fetch_failed(wpa_s);
2763 pos = wpabuf_head(adv_proto);
2764 if (wpabuf_len(adv_proto) < 4 || pos[0] != WLAN_EID_ADV_PROTO ||
2765 pos[1] < 2 || pos[3] != ACCESS_NETWORK_QUERY_PROTOCOL) {
2766 wpa_printf(MSG_DEBUG, "ANQP: Unexpected Advertisement "
2767 "Protocol in response");
2768 if (wpa_s->fetch_osu_icon_in_progress)
2769 hs20_icon_fetch_failed(wpa_s);
2774 * If possible, select the BSS entry based on which BSS entry was used
2775 * for the request. This can help in cases where multiple BSS entries
2776 * may exist for the same AP.
2778 dl_list_for_each_reverse(tmp, &wpa_s->bss, struct wpa_bss, list) {
2779 if (tmp == wpa_s->interworking_gas_bss &&
2780 os_memcmp(tmp->bssid, dst, ETH_ALEN) == 0) {
2786 bss = wpa_bss_get_bssid(wpa_s, dst);
2788 pos = wpabuf_head(resp);
2789 end = pos + wpabuf_len(resp);
2792 if (pos + 4 > end) {
2793 wpa_printf(MSG_DEBUG, "ANQP: Invalid element");
2796 info_id = WPA_GET_LE16(pos);
2798 slen = WPA_GET_LE16(pos);
2800 if (pos + slen > end) {
2801 wpa_printf(MSG_DEBUG, "ANQP: Invalid element length "
2802 "for Info ID %u", info_id);
2805 interworking_parse_rx_anqp_resp(wpa_s, bss, dst, info_id, pos,
2810 hs20_notify_parse_done(wpa_s);
2814 static void interworking_scan_res_handler(struct wpa_supplicant *wpa_s,
2815 struct wpa_scan_results *scan_res)
2817 wpa_printf(MSG_DEBUG, "Interworking: Scan results available - start "
2819 interworking_start_fetch_anqp(wpa_s);
2823 int interworking_select(struct wpa_supplicant *wpa_s, int auto_select,
2826 interworking_stop_fetch_anqp(wpa_s);
2827 wpa_s->network_select = 1;
2828 wpa_s->auto_network_select = 0;
2829 wpa_s->auto_select = !!auto_select;
2830 wpa_s->fetch_all_anqp = 0;
2831 wpa_s->fetch_osu_info = 0;
2832 wpa_printf(MSG_DEBUG, "Interworking: Start scan for network "
2834 wpa_s->scan_res_handler = interworking_scan_res_handler;
2835 wpa_s->normal_scans = 0;
2836 wpa_s->scan_req = MANUAL_SCAN_REQ;
2837 os_free(wpa_s->manual_scan_freqs);
2838 wpa_s->manual_scan_freqs = freqs;
2839 wpa_s->after_wps = 0;
2840 wpa_s->known_wps_freq = 0;
2841 wpa_supplicant_req_scan(wpa_s, 0, 0);
2847 static void gas_resp_cb(void *ctx, const u8 *addr, u8 dialog_token,
2848 enum gas_query_result result,
2849 const struct wpabuf *adv_proto,
2850 const struct wpabuf *resp, u16 status_code)
2852 struct wpa_supplicant *wpa_s = ctx;
2855 wpa_msg(wpa_s, MSG_INFO, GAS_RESPONSE_INFO "addr=" MACSTR
2856 " dialog_token=%d status_code=%d resp_len=%d",
2857 MAC2STR(addr), dialog_token, status_code,
2858 resp ? (int) wpabuf_len(resp) : -1);
2862 n = wpabuf_dup(resp);
2865 wpabuf_free(wpa_s->prev_gas_resp);
2866 wpa_s->prev_gas_resp = wpa_s->last_gas_resp;
2867 os_memcpy(wpa_s->prev_gas_addr, wpa_s->last_gas_addr, ETH_ALEN);
2868 wpa_s->prev_gas_dialog_token = wpa_s->last_gas_dialog_token;
2869 wpa_s->last_gas_resp = n;
2870 os_memcpy(wpa_s->last_gas_addr, addr, ETH_ALEN);
2871 wpa_s->last_gas_dialog_token = dialog_token;
2875 int gas_send_request(struct wpa_supplicant *wpa_s, const u8 *dst,
2876 const struct wpabuf *adv_proto,
2877 const struct wpabuf *query)
2882 struct wpa_bss *bss;
2885 u8 query_resp_len_limit = 0, pame_bi = 0;
2887 freq = wpa_s->assoc_freq;
2888 bss = wpa_bss_get_bssid(wpa_s, dst);
2894 wpa_printf(MSG_DEBUG, "GAS request to " MACSTR " (freq %d MHz)",
2895 MAC2STR(dst), freq);
2896 wpa_hexdump_buf(MSG_DEBUG, "Advertisement Protocol ID", adv_proto);
2897 wpa_hexdump_buf(MSG_DEBUG, "GAS Query", query);
2899 len = 3 + wpabuf_len(adv_proto) + 2;
2901 len += wpabuf_len(query);
2902 buf = gas_build_initial_req(0, len);
2906 /* Advertisement Protocol IE */
2907 wpabuf_put_u8(buf, WLAN_EID_ADV_PROTO);
2908 wpabuf_put_u8(buf, 1 + wpabuf_len(adv_proto)); /* Length */
2909 wpabuf_put_u8(buf, (query_resp_len_limit & 0x7f) |
2910 (pame_bi ? 0x80 : 0));
2911 wpabuf_put_buf(buf, adv_proto);
2915 wpabuf_put_le16(buf, wpabuf_len(query));
2916 wpabuf_put_buf(buf, query);
2918 wpabuf_put_le16(buf, 0);
2920 res = gas_query_req(wpa_s->gas, dst, freq, buf, gas_resp_cb, wpa_s);
2922 wpa_printf(MSG_DEBUG, "GAS: Failed to send Query Request");
2926 wpa_printf(MSG_DEBUG, "GAS: Query started with dialog token "