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_supplicant_deauthenticate(wpa_s,
81 WLAN_REASON_DEAUTH_LEAVING);
83 wpa_s->disconnected = 0;
84 wpa_s->reassociate = 1;
85 tried = wpa_s->interworking_fast_assoc_tried;
86 wpa_s->interworking_fast_assoc_tried = 1;
88 if (!tried && wpa_supplicant_fast_associate(wpa_s) >= 0)
91 wpa_s->interworking_fast_assoc_tried = 0;
92 wpa_supplicant_req_scan(wpa_s, 0, 0);
96 static struct wpabuf * anqp_build_req(u16 info_ids[], size_t num_ids,
103 buf = gas_anqp_build_initial_req(0, 4 + num_ids * 2 +
104 (extra ? wpabuf_len(extra) : 0));
108 len_pos = gas_anqp_add_element(buf, ANQP_QUERY_LIST);
109 for (i = 0; i < num_ids; i++)
110 wpabuf_put_le16(buf, info_ids[i]);
111 gas_anqp_set_element_len(buf, len_pos);
113 wpabuf_put_buf(buf, extra);
115 gas_anqp_set_len(buf);
121 static void interworking_anqp_resp_cb(void *ctx, const u8 *dst,
123 enum gas_query_result result,
124 const struct wpabuf *adv_proto,
125 const struct wpabuf *resp,
128 struct wpa_supplicant *wpa_s = ctx;
130 wpa_printf(MSG_DEBUG, "ANQP: Response callback dst=" MACSTR
131 " dialog_token=%u result=%d status_code=%u",
132 MAC2STR(dst), dialog_token, result, status_code);
133 anqp_resp_cb(wpa_s, dst, dialog_token, result, adv_proto, resp,
135 interworking_next_anqp_fetch(wpa_s);
139 static int cred_with_roaming_consortium(struct wpa_supplicant *wpa_s)
141 struct wpa_cred *cred;
143 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
144 if (cred->roaming_consortium_len)
146 if (cred->required_roaming_consortium_len)
153 static int cred_with_3gpp(struct wpa_supplicant *wpa_s)
155 struct wpa_cred *cred;
157 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
158 if (cred->pcsc || cred->imsi)
165 static int cred_with_nai_realm(struct wpa_supplicant *wpa_s)
167 struct wpa_cred *cred;
169 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
170 if (cred->pcsc || cred->imsi)
172 if (!cred->eap_method)
174 if (cred->realm && cred->roaming_consortium_len == 0)
181 static int cred_with_domain(struct wpa_supplicant *wpa_s)
183 struct wpa_cred *cred;
185 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
186 if (cred->domain || cred->pcsc || cred->imsi ||
187 cred->roaming_partner)
196 static int cred_with_min_backhaul(struct wpa_supplicant *wpa_s)
198 struct wpa_cred *cred;
200 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
201 if (cred->min_dl_bandwidth_home ||
202 cred->min_ul_bandwidth_home ||
203 cred->min_dl_bandwidth_roaming ||
204 cred->min_ul_bandwidth_roaming)
211 static int cred_with_conn_capab(struct wpa_supplicant *wpa_s)
213 struct wpa_cred *cred;
215 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
216 if (cred->num_req_conn_capab)
222 #endif /* CONFIG_HS20 */
225 static int additional_roaming_consortiums(struct wpa_bss *bss)
228 ie = wpa_bss_get_ie(bss, WLAN_EID_ROAMING_CONSORTIUM);
229 if (ie == NULL || ie[1] == 0)
231 return ie[2]; /* Number of ANQP OIs */
235 static void interworking_continue_anqp(void *eloop_ctx, void *sock_ctx)
237 struct wpa_supplicant *wpa_s = eloop_ctx;
238 interworking_next_anqp_fetch(wpa_s);
242 static int interworking_anqp_send_req(struct wpa_supplicant *wpa_s,
249 size_t num_info_ids = 0;
250 struct wpabuf *extra = NULL;
251 int all = wpa_s->fetch_all_anqp;
253 wpa_printf(MSG_DEBUG, "Interworking: ANQP Query Request to " MACSTR,
254 MAC2STR(bss->bssid));
255 wpa_s->interworking_gas_bss = bss;
257 info_ids[num_info_ids++] = ANQP_CAPABILITY_LIST;
259 info_ids[num_info_ids++] = ANQP_VENUE_NAME;
260 info_ids[num_info_ids++] = ANQP_NETWORK_AUTH_TYPE;
262 if (all || (cred_with_roaming_consortium(wpa_s) &&
263 additional_roaming_consortiums(bss)))
264 info_ids[num_info_ids++] = ANQP_ROAMING_CONSORTIUM;
266 info_ids[num_info_ids++] = ANQP_IP_ADDR_TYPE_AVAILABILITY;
267 if (all || cred_with_nai_realm(wpa_s))
268 info_ids[num_info_ids++] = ANQP_NAI_REALM;
269 if (all || cred_with_3gpp(wpa_s)) {
270 info_ids[num_info_ids++] = ANQP_3GPP_CELLULAR_NETWORK;
271 wpa_supplicant_scard_init(wpa_s, NULL);
273 if (all || cred_with_domain(wpa_s))
274 info_ids[num_info_ids++] = ANQP_DOMAIN_NAME;
275 wpa_hexdump(MSG_DEBUG, "Interworking: ANQP Query info",
276 (u8 *) info_ids, num_info_ids * 2);
279 if (wpa_bss_get_vendor_ie(bss, HS20_IE_VENDOR_TYPE)) {
282 extra = wpabuf_alloc(100);
286 len_pos = gas_anqp_add_element(extra, ANQP_VENDOR_SPECIFIC);
287 wpabuf_put_be24(extra, OUI_WFA);
288 wpabuf_put_u8(extra, HS20_ANQP_OUI_TYPE);
289 wpabuf_put_u8(extra, HS20_STYPE_QUERY_LIST);
290 wpabuf_put_u8(extra, 0); /* Reserved */
291 wpabuf_put_u8(extra, HS20_STYPE_CAPABILITY_LIST);
294 HS20_STYPE_OPERATOR_FRIENDLY_NAME);
295 if (all || cred_with_min_backhaul(wpa_s))
296 wpabuf_put_u8(extra, HS20_STYPE_WAN_METRICS);
297 if (all || cred_with_conn_capab(wpa_s))
298 wpabuf_put_u8(extra, HS20_STYPE_CONNECTION_CAPABILITY);
300 wpabuf_put_u8(extra, HS20_STYPE_OPERATING_CLASS);
302 wpabuf_put_u8(extra, HS20_STYPE_OSU_PROVIDERS_LIST);
303 gas_anqp_set_element_len(extra, len_pos);
305 #endif /* CONFIG_HS20 */
307 buf = anqp_build_req(info_ids, num_info_ids, extra);
312 res = gas_query_req(wpa_s->gas, bss->bssid, bss->freq, buf,
313 interworking_anqp_resp_cb, wpa_s);
315 wpa_printf(MSG_DEBUG, "ANQP: Failed to send Query Request");
318 eloop_register_timeout(0, 0, interworking_continue_anqp, wpa_s,
321 wpa_printf(MSG_DEBUG, "ANQP: Query started with dialog token "
328 struct nai_realm_eap {
331 enum nai_realm_eap_auth_inner_non_eap inner_non_eap;
333 u8 tunneled_cred_type;
340 struct nai_realm_eap *eap;
344 static void nai_realm_free(struct nai_realm *realms, u16 count)
350 for (i = 0; i < count; i++) {
351 os_free(realms[i].eap);
352 os_free(realms[i].realm);
358 static const u8 * nai_realm_parse_eap(struct nai_realm_eap *e, const u8 *pos,
361 u8 elen, auth_count, a;
365 wpa_printf(MSG_DEBUG, "No room for EAP Method fixed fields");
370 if (pos + elen > end || elen < 2) {
371 wpa_printf(MSG_DEBUG, "No room for EAP Method subfield");
377 wpa_printf(MSG_DEBUG, "EAP Method: len=%u method=%u auth_count=%u",
378 elen, e->method, auth_count);
380 for (a = 0; a < auth_count; a++) {
383 if (pos + 2 > end || pos + 2 + pos[1] > end) {
384 wpa_printf(MSG_DEBUG, "No room for Authentication "
385 "Parameter subfield");
393 case NAI_REALM_EAP_AUTH_NON_EAP_INNER_AUTH:
396 e->inner_non_eap = *pos;
397 if (e->method != EAP_TYPE_TTLS)
400 case NAI_REALM_INNER_NON_EAP_PAP:
401 wpa_printf(MSG_DEBUG, "EAP-TTLS/PAP");
403 case NAI_REALM_INNER_NON_EAP_CHAP:
404 wpa_printf(MSG_DEBUG, "EAP-TTLS/CHAP");
406 case NAI_REALM_INNER_NON_EAP_MSCHAP:
407 wpa_printf(MSG_DEBUG, "EAP-TTLS/MSCHAP");
409 case NAI_REALM_INNER_NON_EAP_MSCHAPV2:
410 wpa_printf(MSG_DEBUG, "EAP-TTLS/MSCHAPV2");
414 case NAI_REALM_EAP_AUTH_INNER_AUTH_EAP_METHOD:
417 e->inner_method = *pos;
418 wpa_printf(MSG_DEBUG, "Inner EAP method: %u",
421 case NAI_REALM_EAP_AUTH_CRED_TYPE:
425 wpa_printf(MSG_DEBUG, "Credential Type: %u",
428 case NAI_REALM_EAP_AUTH_TUNNELED_CRED_TYPE:
431 e->tunneled_cred_type = *pos;
432 wpa_printf(MSG_DEBUG, "Tunneled EAP Method Credential "
433 "Type: %u", e->tunneled_cred_type);
436 wpa_printf(MSG_DEBUG, "Unsupported Authentication "
437 "Parameter: id=%u len=%u", id, len);
438 wpa_hexdump(MSG_DEBUG, "Authentication Parameter "
450 static const u8 * nai_realm_parse_realm(struct nai_realm *r, const u8 *pos,
458 wpa_printf(MSG_DEBUG, "No room for NAI Realm Data "
463 len = WPA_GET_LE16(pos); /* NAI Realm Data field Length */
465 if (pos + len > end || len < 3) {
466 wpa_printf(MSG_DEBUG, "No room for NAI Realm Data "
468 len, (unsigned int) (end - pos));
473 r->encoding = *pos++;
475 if (pos + realm_len > f_end) {
476 wpa_printf(MSG_DEBUG, "No room for NAI Realm "
478 realm_len, (unsigned int) (f_end - pos));
481 wpa_hexdump_ascii(MSG_DEBUG, "NAI Realm", pos, realm_len);
482 r->realm = dup_binstr(pos, realm_len);
483 if (r->realm == NULL)
487 if (pos + 1 > f_end) {
488 wpa_printf(MSG_DEBUG, "No room for EAP Method Count");
491 r->eap_count = *pos++;
492 wpa_printf(MSG_DEBUG, "EAP Count: %u", r->eap_count);
493 if (pos + r->eap_count * 3 > f_end) {
494 wpa_printf(MSG_DEBUG, "No room for EAP Methods");
497 r->eap = os_calloc(r->eap_count, sizeof(struct nai_realm_eap));
501 for (e = 0; e < r->eap_count; e++) {
502 pos = nai_realm_parse_eap(&r->eap[e], pos, f_end);
511 static struct nai_realm * nai_realm_parse(struct wpabuf *anqp, u16 *count)
513 struct nai_realm *realm;
520 left = wpabuf_len(anqp);
524 pos = wpabuf_head_u8(anqp);
526 num = WPA_GET_LE16(pos);
527 wpa_printf(MSG_DEBUG, "NAI Realm Count: %u", num);
531 if (num > left / 5) {
532 wpa_printf(MSG_DEBUG, "Invalid NAI Realm Count %u - not "
533 "enough data (%u octets) for that many realms",
534 num, (unsigned int) left);
538 realm = os_calloc(num, sizeof(struct nai_realm));
542 for (i = 0; i < num; i++) {
543 pos = nai_realm_parse_realm(&realm[i], pos, end);
545 nai_realm_free(realm, num);
555 static int nai_realm_match(struct nai_realm *realm, const char *home_realm)
557 char *tmp, *pos, *end;
560 if (realm->realm == NULL || home_realm == NULL)
563 if (os_strchr(realm->realm, ';') == NULL)
564 return os_strcasecmp(realm->realm, home_realm) == 0;
566 tmp = os_strdup(realm->realm);
572 end = os_strchr(pos, ';');
575 if (os_strcasecmp(pos, home_realm) == 0) {
590 static int nai_realm_cred_username(struct nai_realm_eap *eap)
592 if (eap_get_name(EAP_VENDOR_IETF, eap->method) == NULL)
593 return 0; /* method not supported */
595 if (eap->method != EAP_TYPE_TTLS && eap->method != EAP_TYPE_PEAP &&
596 eap->method != EAP_TYPE_FAST) {
597 /* Only tunneled methods with username/password supported */
601 if (eap->method == EAP_TYPE_PEAP || eap->method == EAP_TYPE_FAST) {
602 if (eap->inner_method &&
603 eap_get_name(EAP_VENDOR_IETF, eap->inner_method) == NULL)
605 if (!eap->inner_method &&
606 eap_get_name(EAP_VENDOR_IETF, EAP_TYPE_MSCHAPV2) == NULL)
610 if (eap->method == EAP_TYPE_TTLS) {
611 if (eap->inner_method == 0 && eap->inner_non_eap == 0)
612 return 1; /* Assume TTLS/MSCHAPv2 is used */
613 if (eap->inner_method &&
614 eap_get_name(EAP_VENDOR_IETF, eap->inner_method) == NULL)
616 if (eap->inner_non_eap &&
617 eap->inner_non_eap != NAI_REALM_INNER_NON_EAP_PAP &&
618 eap->inner_non_eap != NAI_REALM_INNER_NON_EAP_CHAP &&
619 eap->inner_non_eap != NAI_REALM_INNER_NON_EAP_MSCHAP &&
620 eap->inner_non_eap != NAI_REALM_INNER_NON_EAP_MSCHAPV2)
624 if (eap->inner_method &&
625 eap->inner_method != EAP_TYPE_GTC &&
626 eap->inner_method != EAP_TYPE_MSCHAPV2)
633 static int nai_realm_cred_cert(struct nai_realm_eap *eap)
635 if (eap_get_name(EAP_VENDOR_IETF, eap->method) == NULL)
636 return 0; /* method not supported */
638 if (eap->method != EAP_TYPE_TLS) {
639 /* Only EAP-TLS supported for credential authentication */
647 static struct nai_realm_eap * nai_realm_find_eap(struct wpa_cred *cred,
648 struct nai_realm *realm)
653 cred->username == NULL ||
654 cred->username[0] == '\0' ||
655 ((cred->password == NULL ||
656 cred->password[0] == '\0') &&
657 (cred->private_key == NULL ||
658 cred->private_key[0] == '\0')))
661 for (e = 0; e < realm->eap_count; e++) {
662 struct nai_realm_eap *eap = &realm->eap[e];
663 if (cred->password && cred->password[0] &&
664 nai_realm_cred_username(eap))
666 if (cred->private_key && cred->private_key[0] &&
667 nai_realm_cred_cert(eap))
675 #ifdef INTERWORKING_3GPP
677 static int plmn_id_match(struct wpabuf *anqp, const char *imsi, int mnc_len)
679 u8 plmn[3], plmn2[3];
684 * See Annex A of 3GPP TS 24.234 v8.1.0 for description. The network
685 * operator is allowed to include only two digits of the MNC, so allow
686 * matches based on both two and three digit MNC assumptions. Since some
687 * SIM/USIM cards may not expose MNC length conveniently, we may be
688 * provided the default MNC length 3 here and as such, checking with MNC
689 * length 2 is justifiable even though 3GPP TS 24.234 does not mention
690 * that case. Anyway, MCC/MNC pair where both 2 and 3 digit MNC is used
691 * with otherwise matching values would not be good idea in general, so
692 * this should not result in selecting incorrect networks.
694 /* Match with 3 digit MNC */
695 plmn[0] = (imsi[0] - '0') | ((imsi[1] - '0') << 4);
696 plmn[1] = (imsi[2] - '0') | ((imsi[5] - '0') << 4);
697 plmn[2] = (imsi[3] - '0') | ((imsi[4] - '0') << 4);
698 /* Match with 2 digit MNC */
699 plmn2[0] = (imsi[0] - '0') | ((imsi[1] - '0') << 4);
700 plmn2[1] = (imsi[2] - '0') | 0xf0;
701 plmn2[2] = (imsi[3] - '0') | ((imsi[4] - '0') << 4);
705 pos = wpabuf_head_u8(anqp);
706 end = pos + wpabuf_len(anqp);
710 wpa_printf(MSG_DEBUG, "Unsupported GUD version 0x%x", *pos);
715 if (pos + udhl > end) {
716 wpa_printf(MSG_DEBUG, "Invalid UDHL");
721 wpa_printf(MSG_DEBUG, "Interworking: Matching against MCC/MNC alternatives: %02x:%02x:%02x or %02x:%02x:%02x (IMSI %s, MNC length %d)",
722 plmn[0], plmn[1], plmn[2], plmn2[0], plmn2[1], plmn2[2],
725 while (pos + 2 <= end) {
734 if (iei == 0 && len > 0) {
737 wpa_hexdump(MSG_DEBUG, "Interworking: PLMN List information element",
740 for (i = 0; i < num; i++) {
743 if (os_memcmp(pos, plmn, 3) == 0 ||
744 os_memcmp(pos, plmn2, 3) == 0)
745 return 1; /* Found matching PLMN */
749 wpa_hexdump(MSG_DEBUG, "Interworking: Unrecognized 3GPP information element",
760 static int build_root_nai(char *nai, size_t nai_len, const char *imsi,
761 size_t mnc_len, char prefix)
763 const char *sep, *msin;
765 size_t msin_len, plmn_len;
768 * TS 23.003, Clause 14 (3GPP to WLAN Interworking)
770 * <aka:0|sim:1><IMSI>@wlan.mnc<MNC>.mcc<MCC>.3gppnetwork.org
771 * <MNC> is zero-padded to three digits in case two-digit MNC is used
774 if (imsi == NULL || os_strlen(imsi) > 16) {
775 wpa_printf(MSG_DEBUG, "No valid IMSI available");
778 sep = os_strchr(imsi, '-');
780 plmn_len = sep - imsi;
782 } else if (mnc_len && os_strlen(imsi) >= 3 + mnc_len) {
783 plmn_len = 3 + mnc_len;
784 msin = imsi + plmn_len;
787 if (plmn_len != 5 && plmn_len != 6)
789 msin_len = os_strlen(msin);
795 os_memcpy(pos, imsi, plmn_len);
797 os_memcpy(pos, msin, msin_len);
799 pos += os_snprintf(pos, end - pos, "@wlan.mnc");
809 os_snprintf(pos, end - pos, ".mcc%c%c%c.3gppnetwork.org",
810 imsi[0], imsi[1], imsi[2]);
816 static int set_root_nai(struct wpa_ssid *ssid, const char *imsi, char prefix)
819 if (build_root_nai(nai, sizeof(nai), imsi, 0, prefix) < 0)
821 return wpa_config_set_quoted(ssid, "identity", nai);
824 #endif /* INTERWORKING_3GPP */
827 static int already_connected(struct wpa_supplicant *wpa_s,
828 struct wpa_cred *cred, struct wpa_bss *bss)
830 struct wpa_ssid *ssid, *sel_ssid;
831 struct wpa_bss *selected;
833 if (wpa_s->wpa_state < WPA_ASSOCIATED || wpa_s->current_ssid == NULL)
836 ssid = wpa_s->current_ssid;
837 if (ssid->parent_cred != cred)
840 if (ssid->ssid_len != bss->ssid_len ||
841 os_memcmp(ssid->ssid, bss->ssid, bss->ssid_len) != 0)
845 selected = wpa_supplicant_pick_network(wpa_s, &sel_ssid);
846 if (selected && sel_ssid && sel_ssid->priority > ssid->priority)
847 return 0; /* higher priority network in scan results */
853 static void remove_duplicate_network(struct wpa_supplicant *wpa_s,
854 struct wpa_cred *cred,
857 struct wpa_ssid *ssid;
859 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
860 if (ssid->parent_cred != cred)
862 if (ssid->ssid_len != bss->ssid_len ||
863 os_memcmp(ssid->ssid, bss->ssid, bss->ssid_len) != 0)
872 wpa_printf(MSG_DEBUG, "Interworking: Remove duplicate network entry for the same credential");
874 if (ssid == wpa_s->current_ssid) {
875 wpa_sm_set_config(wpa_s->wpa, NULL);
876 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
877 wpa_supplicant_deauthenticate(wpa_s,
878 WLAN_REASON_DEAUTH_LEAVING);
881 wpas_notify_network_removed(wpa_s, ssid);
882 wpa_config_remove_network(wpa_s->conf, ssid->id);
886 static int interworking_set_hs20_params(struct wpa_supplicant *wpa_s,
887 struct wpa_ssid *ssid)
889 const char *key_mgmt = NULL;
890 #ifdef CONFIG_IEEE80211R
892 struct wpa_driver_capa capa;
894 res = wpa_drv_get_capa(wpa_s, &capa);
895 if (res == 0 && capa.key_mgmt & WPA_DRIVER_CAPA_KEY_MGMT_FT) {
896 key_mgmt = wpa_s->conf->pmf != NO_MGMT_FRAME_PROTECTION ?
897 "WPA-EAP WPA-EAP-SHA256 FT-EAP" :
900 #endif /* CONFIG_IEEE80211R */
903 key_mgmt = wpa_s->conf->pmf != NO_MGMT_FRAME_PROTECTION ?
904 "WPA-EAP WPA-EAP-SHA256" : "WPA-EAP";
905 if (wpa_config_set(ssid, "key_mgmt", key_mgmt, 0) < 0)
907 if (wpa_config_set(ssid, "proto", "RSN", 0) < 0)
909 if (wpa_config_set(ssid, "pairwise", "CCMP", 0) < 0)
915 static int interworking_connect_3gpp(struct wpa_supplicant *wpa_s,
916 struct wpa_cred *cred,
919 #ifdef INTERWORKING_3GPP
920 struct wpa_ssid *ssid;
925 if (bss->anqp == NULL || bss->anqp->anqp_3gpp == NULL)
928 wpa_printf(MSG_DEBUG, "Interworking: Connect with " MACSTR " (3GPP)",
929 MAC2STR(bss->bssid));
931 if (already_connected(wpa_s, cred, bss)) {
932 wpa_msg(wpa_s, MSG_INFO, INTERWORKING_ALREADY_CONNECTED MACSTR,
933 MAC2STR(bss->bssid));
937 remove_duplicate_network(wpa_s, cred, bss);
939 ssid = wpa_config_add_network(wpa_s->conf);
942 ssid->parent_cred = cred;
944 wpas_notify_network_added(wpa_s, ssid);
945 wpa_config_set_network_defaults(ssid);
946 ssid->priority = cred->priority;
948 ssid->ssid = os_zalloc(bss->ssid_len + 1);
949 if (ssid->ssid == NULL)
951 os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
952 ssid->ssid_len = bss->ssid_len;
953 ssid->eap.sim_num = cred->sim_num;
955 if (interworking_set_hs20_params(wpa_s, ssid) < 0)
958 eap_type = EAP_TYPE_SIM;
959 if (cred->pcsc && wpa_s->scard && scard_supports_umts(wpa_s->scard))
960 eap_type = EAP_TYPE_AKA;
961 if (cred->eap_method && cred->eap_method[0].vendor == EAP_VENDOR_IETF) {
962 if (cred->eap_method[0].method == EAP_TYPE_SIM ||
963 cred->eap_method[0].method == EAP_TYPE_AKA ||
964 cred->eap_method[0].method == EAP_TYPE_AKA_PRIME)
965 eap_type = cred->eap_method[0].method;
971 res = wpa_config_set(ssid, "eap", "SIM", 0);
975 res = wpa_config_set(ssid, "eap", "AKA", 0);
977 case EAP_TYPE_AKA_PRIME:
979 res = wpa_config_set(ssid, "eap", "AKA'", 0);
986 wpa_printf(MSG_DEBUG, "Selected EAP method (%d) not supported",
991 if (!cred->pcsc && set_root_nai(ssid, cred->imsi, prefix) < 0) {
992 wpa_printf(MSG_DEBUG, "Failed to set Root NAI");
996 if (cred->milenage && cred->milenage[0]) {
997 if (wpa_config_set_quoted(ssid, "password",
1000 } else if (cred->pcsc) {
1001 if (wpa_config_set_quoted(ssid, "pcsc", "") < 0)
1003 if (wpa_s->conf->pcsc_pin &&
1004 wpa_config_set_quoted(ssid, "pin", wpa_s->conf->pcsc_pin)
1009 wpa_s->next_ssid = ssid;
1010 wpa_config_update_prio_list(wpa_s->conf);
1011 interworking_reconnect(wpa_s);
1016 wpas_notify_network_removed(wpa_s, ssid);
1017 wpa_config_remove_network(wpa_s->conf, ssid->id);
1018 #endif /* INTERWORKING_3GPP */
1023 static int roaming_consortium_element_match(const u8 *ie, const u8 *rc_id,
1026 const u8 *pos, *end;
1033 end = ie + 2 + ie[1];
1035 /* Roaming Consortium element:
1036 * Number of ANQP OIs
1037 * OI #1 and #2 lengths
1038 * OI #1, [OI #2], [OI #3]
1044 pos++; /* skip Number of ANQP OIs */
1046 if (pos + (lens & 0x0f) + (lens >> 4) > end)
1049 if ((lens & 0x0f) == rc_len && os_memcmp(pos, rc_id, rc_len) == 0)
1053 if ((lens >> 4) == rc_len && os_memcmp(pos, rc_id, rc_len) == 0)
1057 if (pos < end && (size_t) (end - pos) == rc_len &&
1058 os_memcmp(pos, rc_id, rc_len) == 0)
1065 static int roaming_consortium_anqp_match(const struct wpabuf *anqp,
1066 const u8 *rc_id, size_t rc_len)
1068 const u8 *pos, *end;
1074 pos = wpabuf_head(anqp);
1075 end = pos + wpabuf_len(anqp);
1077 /* Set of <OI Length, OI> duples */
1080 if (pos + len > end)
1082 if (len == rc_len && os_memcmp(pos, rc_id, rc_len) == 0)
1091 static int roaming_consortium_match(const u8 *ie, const struct wpabuf *anqp,
1092 const u8 *rc_id, size_t rc_len)
1094 return roaming_consortium_element_match(ie, rc_id, rc_len) ||
1095 roaming_consortium_anqp_match(anqp, rc_id, rc_len);
1099 static int cred_no_required_oi_match(struct wpa_cred *cred, struct wpa_bss *bss)
1103 if (cred->required_roaming_consortium_len == 0)
1106 ie = wpa_bss_get_ie(bss, WLAN_EID_ROAMING_CONSORTIUM);
1109 (bss->anqp == NULL || bss->anqp->roaming_consortium == NULL))
1112 return !roaming_consortium_match(ie,
1114 bss->anqp->roaming_consortium : NULL,
1115 cred->required_roaming_consortium,
1116 cred->required_roaming_consortium_len);
1120 static int cred_excluded_ssid(struct wpa_cred *cred, struct wpa_bss *bss)
1124 if (!cred->excluded_ssid)
1127 for (i = 0; i < cred->num_excluded_ssid; i++) {
1128 struct excluded_ssid *e = &cred->excluded_ssid[i];
1129 if (bss->ssid_len == e->ssid_len &&
1130 os_memcmp(bss->ssid, e->ssid, e->ssid_len) == 0)
1138 static int cred_below_min_backhaul(struct wpa_supplicant *wpa_s,
1139 struct wpa_cred *cred, struct wpa_bss *bss)
1142 unsigned int dl_bandwidth, ul_bandwidth;
1144 u8 wan_info, dl_load, ul_load;
1146 u32 ul_speed, dl_speed;
1148 if (!cred->min_dl_bandwidth_home &&
1149 !cred->min_ul_bandwidth_home &&
1150 !cred->min_dl_bandwidth_roaming &&
1151 !cred->min_ul_bandwidth_roaming)
1152 return 0; /* No bandwidth constraint specified */
1154 if (bss->anqp == NULL || bss->anqp->hs20_wan_metrics == NULL)
1155 return 0; /* No WAN Metrics known - ignore constraint */
1157 wan = wpabuf_head(bss->anqp->hs20_wan_metrics);
1159 if (wan_info & BIT(3))
1160 return 1; /* WAN link at capacity */
1161 lmd = WPA_GET_LE16(wan + 11);
1163 return 0; /* Downlink/Uplink Load was not measured */
1164 dl_speed = WPA_GET_LE32(wan + 1);
1165 ul_speed = WPA_GET_LE32(wan + 5);
1169 if (dl_speed >= 0xffffff)
1170 dl_bandwidth = dl_speed / 255 * (255 - dl_load);
1172 dl_bandwidth = dl_speed * (255 - dl_load) / 255;
1174 if (ul_speed >= 0xffffff)
1175 ul_bandwidth = ul_speed / 255 * (255 - ul_load);
1177 ul_bandwidth = ul_speed * (255 - ul_load) / 255;
1179 res = interworking_home_sp_cred(wpa_s, cred, bss->anqp ?
1180 bss->anqp->domain_name : NULL);
1182 if (cred->min_dl_bandwidth_home > dl_bandwidth)
1184 if (cred->min_ul_bandwidth_home > ul_bandwidth)
1187 if (cred->min_dl_bandwidth_roaming > dl_bandwidth)
1189 if (cred->min_ul_bandwidth_roaming > ul_bandwidth)
1197 static int cred_over_max_bss_load(struct wpa_supplicant *wpa_s,
1198 struct wpa_cred *cred, struct wpa_bss *bss)
1203 if (!cred->max_bss_load)
1204 return 0; /* No BSS Load constraint specified */
1206 ie = wpa_bss_get_ie(bss, WLAN_EID_BSS_LOAD);
1207 if (ie == NULL || ie[1] < 3)
1208 return 0; /* No BSS Load advertised */
1210 res = interworking_home_sp_cred(wpa_s, cred, bss->anqp ?
1211 bss->anqp->domain_name : NULL);
1213 return 0; /* Not a home network */
1215 return ie[4] > cred->max_bss_load;
1219 static int has_proto_match(const u8 *pos, const u8 *end, u8 proto)
1221 while (pos + 4 <= end) {
1222 if (pos[0] == proto && pos[3] == 1 /* Open */)
1231 static int has_proto_port_match(const u8 *pos, const u8 *end, u8 proto,
1234 while (pos + 4 <= end) {
1235 if (pos[0] == proto && WPA_GET_LE16(&pos[1]) == port &&
1236 pos[3] == 1 /* Open */)
1245 static int cred_conn_capab_missing(struct wpa_supplicant *wpa_s,
1246 struct wpa_cred *cred, struct wpa_bss *bss)
1249 const u8 *capab, *end;
1253 if (!cred->num_req_conn_capab)
1254 return 0; /* No connection capability constraint specified */
1256 if (bss->anqp == NULL || bss->anqp->hs20_connection_capability == NULL)
1257 return 0; /* No Connection Capability known - ignore constraint
1260 res = interworking_home_sp_cred(wpa_s, cred, bss->anqp ?
1261 bss->anqp->domain_name : NULL);
1263 return 0; /* No constraint in home network */
1265 capab = wpabuf_head(bss->anqp->hs20_connection_capability);
1266 end = capab + wpabuf_len(bss->anqp->hs20_connection_capability);
1268 for (i = 0; i < cred->num_req_conn_capab; i++) {
1269 ports = cred->req_conn_capab_port[i];
1271 if (!has_proto_match(capab, end,
1272 cred->req_conn_capab_proto[i]))
1275 for (j = 0; ports[j] > -1; j++) {
1276 if (!has_proto_port_match(
1278 cred->req_conn_capab_proto[i],
1289 static struct wpa_cred * interworking_credentials_available_roaming_consortium(
1290 struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw,
1293 struct wpa_cred *cred, *selected = NULL;
1295 int is_excluded = 0;
1297 ie = wpa_bss_get_ie(bss, WLAN_EID_ROAMING_CONSORTIUM);
1300 (bss->anqp == NULL || bss->anqp->roaming_consortium == NULL))
1303 if (wpa_s->conf->cred == NULL)
1306 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
1307 if (cred->roaming_consortium_len == 0)
1310 if (!roaming_consortium_match(ie,
1312 bss->anqp->roaming_consortium :
1314 cred->roaming_consortium,
1315 cred->roaming_consortium_len))
1318 if (cred_no_required_oi_match(cred, bss))
1320 if (!ignore_bw && cred_below_min_backhaul(wpa_s, cred, bss))
1322 if (!ignore_bw && cred_over_max_bss_load(wpa_s, cred, bss))
1324 if (!ignore_bw && cred_conn_capab_missing(wpa_s, cred, bss))
1326 if (cred_excluded_ssid(cred, bss)) {
1327 if (excluded == NULL)
1329 if (selected == NULL) {
1334 if (selected == NULL || is_excluded ||
1335 cred_prio_cmp(selected, cred) < 0) {
1343 *excluded = is_excluded;
1349 static int interworking_set_eap_params(struct wpa_ssid *ssid,
1350 struct wpa_cred *cred, int ttls)
1352 if (cred->eap_method) {
1353 ttls = cred->eap_method->vendor == EAP_VENDOR_IETF &&
1354 cred->eap_method->method == EAP_TYPE_TTLS;
1356 os_free(ssid->eap.eap_methods);
1357 ssid->eap.eap_methods =
1358 os_malloc(sizeof(struct eap_method_type) * 2);
1359 if (ssid->eap.eap_methods == NULL)
1361 os_memcpy(ssid->eap.eap_methods, cred->eap_method,
1362 sizeof(*cred->eap_method));
1363 ssid->eap.eap_methods[1].vendor = EAP_VENDOR_IETF;
1364 ssid->eap.eap_methods[1].method = EAP_TYPE_NONE;
1367 if (ttls && cred->username && cred->username[0]) {
1370 /* Use anonymous NAI in Phase 1 */
1371 pos = os_strchr(cred->username, '@');
1373 size_t buflen = 9 + os_strlen(pos) + 1;
1374 anon = os_malloc(buflen);
1377 os_snprintf(anon, buflen, "anonymous%s", pos);
1378 } else if (cred->realm) {
1379 size_t buflen = 10 + os_strlen(cred->realm) + 1;
1380 anon = os_malloc(buflen);
1383 os_snprintf(anon, buflen, "anonymous@%s", cred->realm);
1385 anon = os_strdup("anonymous");
1389 if (wpa_config_set_quoted(ssid, "anonymous_identity", anon) <
1397 if (cred->username && cred->username[0] &&
1398 wpa_config_set_quoted(ssid, "identity", cred->username) < 0)
1401 if (cred->password && cred->password[0]) {
1402 if (cred->ext_password &&
1403 wpa_config_set(ssid, "password", cred->password, 0) < 0)
1405 if (!cred->ext_password &&
1406 wpa_config_set_quoted(ssid, "password", cred->password) <
1411 if (cred->client_cert && cred->client_cert[0] &&
1412 wpa_config_set_quoted(ssid, "client_cert", cred->client_cert) < 0)
1416 if (cred->private_key &&
1417 os_strncmp(cred->private_key, "keystore://", 11) == 0) {
1418 /* Use OpenSSL engine configuration for Android keystore */
1419 if (wpa_config_set_quoted(ssid, "engine_id", "keystore") < 0 ||
1420 wpa_config_set_quoted(ssid, "key_id",
1421 cred->private_key + 11) < 0 ||
1422 wpa_config_set(ssid, "engine", "1", 0) < 0)
1425 #endif /* ANDROID */
1426 if (cred->private_key && cred->private_key[0] &&
1427 wpa_config_set_quoted(ssid, "private_key", cred->private_key) < 0)
1430 if (cred->private_key_passwd && cred->private_key_passwd[0] &&
1431 wpa_config_set_quoted(ssid, "private_key_passwd",
1432 cred->private_key_passwd) < 0)
1436 os_free(ssid->eap.phase1);
1437 ssid->eap.phase1 = os_strdup(cred->phase1);
1440 os_free(ssid->eap.phase2);
1441 ssid->eap.phase2 = os_strdup(cred->phase2);
1444 if (cred->ca_cert && cred->ca_cert[0] &&
1445 wpa_config_set_quoted(ssid, "ca_cert", cred->ca_cert) < 0)
1448 if (cred->domain_suffix_match && cred->domain_suffix_match[0] &&
1449 wpa_config_set_quoted(ssid, "domain_suffix_match",
1450 cred->domain_suffix_match) < 0)
1453 ssid->eap.ocsp = cred->ocsp;
1459 static int interworking_connect_roaming_consortium(
1460 struct wpa_supplicant *wpa_s, struct wpa_cred *cred,
1461 struct wpa_bss *bss)
1463 struct wpa_ssid *ssid;
1465 wpa_printf(MSG_DEBUG, "Interworking: Connect with " MACSTR " based on "
1466 "roaming consortium match", MAC2STR(bss->bssid));
1468 if (already_connected(wpa_s, cred, bss)) {
1469 wpa_msg(wpa_s, MSG_INFO, INTERWORKING_ALREADY_CONNECTED MACSTR,
1470 MAC2STR(bss->bssid));
1474 remove_duplicate_network(wpa_s, cred, bss);
1476 ssid = wpa_config_add_network(wpa_s->conf);
1479 ssid->parent_cred = cred;
1480 wpas_notify_network_added(wpa_s, ssid);
1481 wpa_config_set_network_defaults(ssid);
1482 ssid->priority = cred->priority;
1483 ssid->temporary = 1;
1484 ssid->ssid = os_zalloc(bss->ssid_len + 1);
1485 if (ssid->ssid == NULL)
1487 os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
1488 ssid->ssid_len = bss->ssid_len;
1490 if (interworking_set_hs20_params(wpa_s, ssid) < 0)
1493 if (cred->eap_method == NULL) {
1494 wpa_printf(MSG_DEBUG, "Interworking: No EAP method set for "
1495 "credential using roaming consortium");
1499 if (interworking_set_eap_params(
1501 cred->eap_method->vendor == EAP_VENDOR_IETF &&
1502 cred->eap_method->method == EAP_TYPE_TTLS) < 0)
1505 wpa_s->next_ssid = ssid;
1506 wpa_config_update_prio_list(wpa_s->conf);
1507 interworking_reconnect(wpa_s);
1512 wpas_notify_network_removed(wpa_s, ssid);
1513 wpa_config_remove_network(wpa_s->conf, ssid->id);
1518 static int interworking_connect_helper(struct wpa_supplicant *wpa_s,
1519 struct wpa_bss *bss, int allow_excluded)
1521 struct wpa_cred *cred, *cred_rc, *cred_3gpp;
1522 struct wpa_ssid *ssid;
1523 struct nai_realm *realm;
1524 struct nai_realm_eap *eap = NULL;
1527 int excluded = 0, *excl = allow_excluded ? &excluded : NULL;
1530 if (wpa_s->conf->cred == NULL || bss == NULL)
1532 if (disallowed_bssid(wpa_s, bss->bssid) ||
1533 disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len)) {
1534 wpa_printf(MSG_DEBUG, "Interworking: Reject connection to disallowed BSS "
1535 MACSTR, MAC2STR(bss->bssid));
1539 wpa_printf(MSG_DEBUG, "Interworking: Considering BSS " MACSTR
1540 " for connection (allow_excluded=%d)",
1541 MAC2STR(bss->bssid), allow_excluded);
1543 if (!wpa_bss_get_ie(bss, WLAN_EID_RSN)) {
1545 * We currently support only HS 2.0 networks and those are
1546 * required to use WPA2-Enterprise.
1548 wpa_printf(MSG_DEBUG, "Interworking: Network does not use "
1553 cred_rc = interworking_credentials_available_roaming_consortium(
1554 wpa_s, bss, 0, excl);
1556 wpa_printf(MSG_DEBUG, "Interworking: Highest roaming "
1557 "consortium matching credential priority %d "
1559 cred_rc->priority, cred_rc->sp_priority);
1560 if (allow_excluded && excl && !(*excl))
1564 cred = interworking_credentials_available_realm(wpa_s, bss, 0, excl);
1566 wpa_printf(MSG_DEBUG, "Interworking: Highest NAI Realm list "
1567 "matching credential priority %d sp_priority %d",
1568 cred->priority, cred->sp_priority);
1569 if (allow_excluded && excl && !(*excl))
1573 cred_3gpp = interworking_credentials_available_3gpp(wpa_s, bss, 0,
1576 wpa_printf(MSG_DEBUG, "Interworking: Highest 3GPP matching "
1577 "credential priority %d sp_priority %d",
1578 cred_3gpp->priority, cred_3gpp->sp_priority);
1579 if (allow_excluded && excl && !(*excl))
1583 if (!cred_rc && !cred && !cred_3gpp) {
1584 wpa_printf(MSG_DEBUG, "Interworking: No full credential matches - consider options without BW(etc.) limits");
1585 cred_rc = interworking_credentials_available_roaming_consortium(
1586 wpa_s, bss, 1, excl);
1588 wpa_printf(MSG_DEBUG, "Interworking: Highest roaming "
1589 "consortium matching credential priority %d "
1590 "sp_priority %d (ignore BW)",
1591 cred_rc->priority, cred_rc->sp_priority);
1592 if (allow_excluded && excl && !(*excl))
1596 cred = interworking_credentials_available_realm(wpa_s, bss, 1,
1599 wpa_printf(MSG_DEBUG, "Interworking: Highest NAI Realm "
1600 "list matching credential priority %d "
1601 "sp_priority %d (ignore BW)",
1602 cred->priority, cred->sp_priority);
1603 if (allow_excluded && excl && !(*excl))
1607 cred_3gpp = interworking_credentials_available_3gpp(wpa_s, bss,
1610 wpa_printf(MSG_DEBUG, "Interworking: Highest 3GPP "
1611 "matching credential priority %d "
1612 "sp_priority %d (ignore BW)",
1613 cred_3gpp->priority, cred_3gpp->sp_priority);
1614 if (allow_excluded && excl && !(*excl))
1620 (cred == NULL || cred_prio_cmp(cred_rc, cred) >= 0) &&
1621 (cred_3gpp == NULL || cred_prio_cmp(cred_rc, cred_3gpp) >= 0))
1622 return interworking_connect_roaming_consortium(wpa_s, cred_rc,
1626 (cred == NULL || cred_prio_cmp(cred_3gpp, cred) >= 0)) {
1627 return interworking_connect_3gpp(wpa_s, cred_3gpp, bss);
1631 wpa_printf(MSG_DEBUG, "Interworking: No matching credentials "
1632 "found for " MACSTR, MAC2STR(bss->bssid));
1636 realm = nai_realm_parse(bss->anqp ? bss->anqp->nai_realm : NULL,
1638 if (realm == NULL) {
1639 wpa_printf(MSG_DEBUG, "Interworking: Could not parse NAI "
1640 "Realm list from " MACSTR, MAC2STR(bss->bssid));
1644 for (i = 0; i < count; i++) {
1645 if (!nai_realm_match(&realm[i], cred->realm))
1647 eap = nai_realm_find_eap(cred, &realm[i]);
1653 wpa_printf(MSG_DEBUG, "Interworking: No matching credentials "
1654 "and EAP method found for " MACSTR,
1655 MAC2STR(bss->bssid));
1656 nai_realm_free(realm, count);
1660 wpa_printf(MSG_DEBUG, "Interworking: Connect with " MACSTR,
1661 MAC2STR(bss->bssid));
1663 if (already_connected(wpa_s, cred, bss)) {
1664 wpa_msg(wpa_s, MSG_INFO, INTERWORKING_ALREADY_CONNECTED MACSTR,
1665 MAC2STR(bss->bssid));
1666 nai_realm_free(realm, count);
1670 remove_duplicate_network(wpa_s, cred, bss);
1672 ssid = wpa_config_add_network(wpa_s->conf);
1674 nai_realm_free(realm, count);
1677 ssid->parent_cred = cred;
1678 wpas_notify_network_added(wpa_s, ssid);
1679 wpa_config_set_network_defaults(ssid);
1680 ssid->priority = cred->priority;
1681 ssid->temporary = 1;
1682 ssid->ssid = os_zalloc(bss->ssid_len + 1);
1683 if (ssid->ssid == NULL)
1685 os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
1686 ssid->ssid_len = bss->ssid_len;
1688 if (interworking_set_hs20_params(wpa_s, ssid) < 0)
1691 if (wpa_config_set(ssid, "eap", eap_get_name(EAP_VENDOR_IETF,
1692 eap->method), 0) < 0)
1695 switch (eap->method) {
1697 if (eap->inner_method) {
1698 os_snprintf(buf, sizeof(buf), "\"autheap=%s\"",
1699 eap_get_name(EAP_VENDOR_IETF,
1700 eap->inner_method));
1701 if (wpa_config_set(ssid, "phase2", buf, 0) < 0)
1705 switch (eap->inner_non_eap) {
1706 case NAI_REALM_INNER_NON_EAP_PAP:
1707 if (wpa_config_set(ssid, "phase2", "\"auth=PAP\"", 0) <
1711 case NAI_REALM_INNER_NON_EAP_CHAP:
1712 if (wpa_config_set(ssid, "phase2", "\"auth=CHAP\"", 0)
1716 case NAI_REALM_INNER_NON_EAP_MSCHAP:
1717 if (wpa_config_set(ssid, "phase2", "\"auth=MSCHAP\"",
1721 case NAI_REALM_INNER_NON_EAP_MSCHAPV2:
1722 if (wpa_config_set(ssid, "phase2", "\"auth=MSCHAPV2\"",
1727 /* EAP params were not set - assume TTLS/MSCHAPv2 */
1728 if (wpa_config_set(ssid, "phase2", "\"auth=MSCHAPV2\"",
1736 if (wpa_config_set(ssid, "phase1", "\"fast_provisioning=2\"",
1739 if (wpa_config_set(ssid, "pac_file",
1740 "\"blob://pac_interworking\"", 0) < 0)
1742 name = eap_get_name(EAP_VENDOR_IETF,
1743 eap->inner_method ? eap->inner_method :
1747 os_snprintf(buf, sizeof(buf), "\"auth=%s\"", name);
1748 if (wpa_config_set(ssid, "phase2", buf, 0) < 0)
1755 if (interworking_set_eap_params(ssid, cred,
1756 eap->method == EAP_TYPE_TTLS) < 0)
1759 nai_realm_free(realm, count);
1761 wpa_s->next_ssid = ssid;
1762 wpa_config_update_prio_list(wpa_s->conf);
1763 interworking_reconnect(wpa_s);
1768 wpas_notify_network_removed(wpa_s, ssid);
1769 wpa_config_remove_network(wpa_s->conf, ssid->id);
1770 nai_realm_free(realm, count);
1775 int interworking_connect(struct wpa_supplicant *wpa_s, struct wpa_bss *bss)
1777 return interworking_connect_helper(wpa_s, bss, 1);
1782 static int interworking_pcsc_read_imsi(struct wpa_supplicant *wpa_s)
1786 if (wpa_s->imsi[0] && wpa_s->mnc_len)
1789 len = sizeof(wpa_s->imsi) - 1;
1790 if (scard_get_imsi(wpa_s->scard, wpa_s->imsi, &len)) {
1791 scard_deinit(wpa_s->scard);
1792 wpa_s->scard = NULL;
1793 wpa_msg(wpa_s, MSG_ERROR, "Could not read IMSI");
1796 wpa_s->imsi[len] = '\0';
1797 wpa_s->mnc_len = scard_get_mnc_len(wpa_s->scard);
1798 wpa_printf(MSG_DEBUG, "SCARD: IMSI %s (MNC length %d)",
1799 wpa_s->imsi, wpa_s->mnc_len);
1803 #endif /* PCSC_FUNCS */
1806 static struct wpa_cred * interworking_credentials_available_3gpp(
1807 struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw,
1810 struct wpa_cred *selected = NULL;
1811 #ifdef INTERWORKING_3GPP
1812 struct wpa_cred *cred;
1814 int is_excluded = 0;
1816 if (bss->anqp == NULL || bss->anqp->anqp_3gpp == NULL)
1819 #ifdef CONFIG_EAP_PROXY
1820 if (!wpa_s->imsi[0]) {
1822 wpa_printf(MSG_DEBUG, "Interworking: IMSI not available - try to read again through eap_proxy");
1823 wpa_s->mnc_len = eapol_sm_get_eap_proxy_imsi(wpa_s->eapol,
1826 if (wpa_s->mnc_len > 0) {
1827 wpa_s->imsi[len] = '\0';
1828 wpa_printf(MSG_DEBUG, "eap_proxy: IMSI %s (MNC length %d)",
1829 wpa_s->imsi, wpa_s->mnc_len);
1831 wpa_printf(MSG_DEBUG, "eap_proxy: IMSI not available");
1834 #endif /* CONFIG_EAP_PROXY */
1836 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
1844 if (cred->pcsc && wpa_s->scard) {
1845 if (interworking_pcsc_read_imsi(wpa_s) < 0)
1848 mnc_len = wpa_s->mnc_len;
1851 #endif /* PCSC_FUNCS */
1852 #ifdef CONFIG_EAP_PROXY
1853 if (cred->pcsc && wpa_s->mnc_len > 0 && wpa_s->imsi[0]) {
1855 mnc_len = wpa_s->mnc_len;
1858 #endif /* CONFIG_EAP_PROXY */
1860 if (cred->imsi == NULL || !cred->imsi[0] ||
1861 (!wpa_s->conf->external_sim &&
1862 (cred->milenage == NULL || !cred->milenage[0])))
1865 sep = os_strchr(cred->imsi, '-');
1867 (sep - cred->imsi != 5 && sep - cred->imsi != 6))
1869 mnc_len = sep - cred->imsi - 3;
1870 os_memcpy(imsi_buf, cred->imsi, 3 + mnc_len);
1872 msin_len = os_strlen(cred->imsi);
1873 if (3 + mnc_len + msin_len >= sizeof(imsi_buf) - 1)
1874 msin_len = sizeof(imsi_buf) - 3 - mnc_len - 1;
1875 os_memcpy(&imsi_buf[3 + mnc_len], sep, msin_len);
1876 imsi_buf[3 + mnc_len + msin_len] = '\0';
1879 #if defined(PCSC_FUNCS) || defined(CONFIG_EAP_PROXY)
1881 #endif /* PCSC_FUNCS || CONFIG_EAP_PROXY */
1882 wpa_printf(MSG_DEBUG, "Interworking: Parsing 3GPP info from "
1883 MACSTR, MAC2STR(bss->bssid));
1884 ret = plmn_id_match(bss->anqp->anqp_3gpp, imsi, mnc_len);
1885 wpa_printf(MSG_DEBUG, "PLMN match %sfound", ret ? "" : "not ");
1887 if (cred_no_required_oi_match(cred, bss))
1890 cred_below_min_backhaul(wpa_s, cred, bss))
1893 cred_over_max_bss_load(wpa_s, cred, bss))
1896 cred_conn_capab_missing(wpa_s, cred, bss))
1898 if (cred_excluded_ssid(cred, bss)) {
1899 if (excluded == NULL)
1901 if (selected == NULL) {
1906 if (selected == NULL || is_excluded ||
1907 cred_prio_cmp(selected, cred) < 0) {
1916 *excluded = is_excluded;
1917 #endif /* INTERWORKING_3GPP */
1922 static struct wpa_cred * interworking_credentials_available_realm(
1923 struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw,
1926 struct wpa_cred *cred, *selected = NULL;
1927 struct nai_realm *realm;
1929 int is_excluded = 0;
1931 if (bss->anqp == NULL || bss->anqp->nai_realm == NULL)
1934 if (wpa_s->conf->cred == NULL)
1937 wpa_printf(MSG_DEBUG, "Interworking: Parsing NAI Realm list from "
1938 MACSTR, MAC2STR(bss->bssid));
1939 realm = nai_realm_parse(bss->anqp->nai_realm, &count);
1940 if (realm == NULL) {
1941 wpa_printf(MSG_DEBUG, "Interworking: Could not parse NAI "
1942 "Realm list from " MACSTR, MAC2STR(bss->bssid));
1946 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
1947 if (cred->realm == NULL)
1950 for (i = 0; i < count; i++) {
1951 if (!nai_realm_match(&realm[i], cred->realm))
1953 if (nai_realm_find_eap(cred, &realm[i])) {
1954 if (cred_no_required_oi_match(cred, bss))
1957 cred_below_min_backhaul(wpa_s, cred, bss))
1960 cred_over_max_bss_load(wpa_s, cred, bss))
1963 cred_conn_capab_missing(wpa_s, cred, bss))
1965 if (cred_excluded_ssid(cred, bss)) {
1966 if (excluded == NULL)
1968 if (selected == NULL) {
1973 if (selected == NULL || is_excluded ||
1974 cred_prio_cmp(selected, cred) < 0)
1985 nai_realm_free(realm, count);
1988 *excluded = is_excluded;
1994 static struct wpa_cred * interworking_credentials_available_helper(
1995 struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw,
1998 struct wpa_cred *cred, *cred2;
1999 int excluded1, excluded2;
2001 if (disallowed_bssid(wpa_s, bss->bssid) ||
2002 disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len)) {
2003 wpa_printf(MSG_DEBUG, "Interworking: Ignore disallowed BSS "
2004 MACSTR, MAC2STR(bss->bssid));
2008 cred = interworking_credentials_available_realm(wpa_s, bss, ignore_bw,
2010 cred2 = interworking_credentials_available_3gpp(wpa_s, bss, ignore_bw,
2012 if (cred && cred2 &&
2013 (cred_prio_cmp(cred2, cred) >= 0 || (!excluded2 && excluded1))) {
2015 excluded1 = excluded2;
2019 excluded1 = excluded2;
2022 cred2 = interworking_credentials_available_roaming_consortium(
2023 wpa_s, bss, ignore_bw, &excluded2);
2024 if (cred && cred2 &&
2025 (cred_prio_cmp(cred2, cred) >= 0 || (!excluded2 && excluded1))) {
2027 excluded1 = excluded2;
2031 excluded1 = excluded2;
2035 *excluded = excluded1;
2040 static struct wpa_cred * interworking_credentials_available(
2041 struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int *excluded)
2043 struct wpa_cred *cred;
2047 cred = interworking_credentials_available_helper(wpa_s, bss, 0,
2051 return interworking_credentials_available_helper(wpa_s, bss, 1,
2056 int domain_name_list_contains(struct wpabuf *domain_names,
2057 const char *domain, int exact_match)
2059 const u8 *pos, *end;
2062 len = os_strlen(domain);
2063 pos = wpabuf_head(domain_names);
2064 end = pos + wpabuf_len(domain_names);
2066 while (pos + 1 < end) {
2067 if (pos + 1 + pos[0] > end)
2070 wpa_hexdump_ascii(MSG_DEBUG, "Interworking: AP domain name",
2072 if (pos[0] == len &&
2073 os_strncasecmp(domain, (const char *) (pos + 1), len) == 0)
2075 if (!exact_match && pos[0] > len && pos[pos[0] - len] == '.') {
2076 const char *ap = (const char *) (pos + 1);
2077 int offset = pos[0] - len;
2078 if (os_strncasecmp(domain, ap + offset, len) == 0)
2089 int interworking_home_sp_cred(struct wpa_supplicant *wpa_s,
2090 struct wpa_cred *cred,
2091 struct wpabuf *domain_names)
2095 #ifdef INTERWORKING_3GPP
2096 char nai[100], *realm;
2103 else if (cred->pcsc && wpa_s->scard) {
2104 if (interworking_pcsc_read_imsi(wpa_s) < 0)
2107 mnc_len = wpa_s->mnc_len;
2109 #endif /* PCSC_FUNCS */
2110 #ifdef CONFIG_EAP_PROXY
2111 else if (cred->pcsc && wpa_s->mnc_len > 0 && wpa_s->imsi[0]) {
2113 mnc_len = wpa_s->mnc_len;
2115 #endif /* CONFIG_EAP_PROXY */
2117 imsi && build_root_nai(nai, sizeof(nai), imsi, mnc_len, 0) == 0) {
2118 realm = os_strchr(nai, '@');
2121 wpa_printf(MSG_DEBUG, "Interworking: Search for match "
2122 "with SIM/USIM domain %s", realm);
2124 domain_name_list_contains(domain_names, realm, 1))
2129 #endif /* INTERWORKING_3GPP */
2131 if (domain_names == NULL || cred->domain == NULL)
2134 for (i = 0; i < cred->num_domain; i++) {
2135 wpa_printf(MSG_DEBUG, "Interworking: Search for match with "
2136 "home SP FQDN %s", cred->domain[i]);
2137 if (domain_name_list_contains(domain_names, cred->domain[i], 1))
2145 static int interworking_home_sp(struct wpa_supplicant *wpa_s,
2146 struct wpabuf *domain_names)
2148 struct wpa_cred *cred;
2150 if (domain_names == NULL || wpa_s->conf->cred == NULL)
2153 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
2154 int res = interworking_home_sp_cred(wpa_s, cred, domain_names);
2163 static int interworking_find_network_match(struct wpa_supplicant *wpa_s)
2165 struct wpa_bss *bss;
2166 struct wpa_ssid *ssid;
2168 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
2169 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
2170 if (wpas_network_disabled(wpa_s, ssid) ||
2171 ssid->mode != WPAS_MODE_INFRA)
2173 if (ssid->ssid_len != bss->ssid_len ||
2174 os_memcmp(ssid->ssid, bss->ssid, ssid->ssid_len) !=
2178 * TODO: Consider more accurate matching of security
2179 * configuration similarly to what is done in events.c
2189 static int roaming_partner_match(struct wpa_supplicant *wpa_s,
2190 struct roaming_partner *partner,
2191 struct wpabuf *domain_names)
2193 wpa_printf(MSG_DEBUG, "Interworking: Comparing roaming_partner info fqdn='%s' exact_match=%d priority=%u country='%s'",
2194 partner->fqdn, partner->exact_match, partner->priority,
2196 wpa_hexdump_ascii(MSG_DEBUG, "Interworking: Domain names",
2197 wpabuf_head(domain_names),
2198 wpabuf_len(domain_names));
2199 if (!domain_name_list_contains(domain_names, partner->fqdn,
2200 partner->exact_match))
2202 /* TODO: match Country */
2207 static u8 roaming_prio(struct wpa_supplicant *wpa_s, struct wpa_cred *cred,
2208 struct wpa_bss *bss)
2212 if (bss->anqp == NULL || bss->anqp->domain_name == NULL) {
2213 wpa_printf(MSG_DEBUG, "Interworking: No ANQP domain name info -> use default roaming partner priority 128");
2214 return 128; /* cannot check preference with domain name */
2217 if (interworking_home_sp_cred(wpa_s, cred, bss->anqp->domain_name) > 0)
2219 wpa_printf(MSG_DEBUG, "Interworking: Determined to be home SP -> use maximum preference 0 as roaming partner priority");
2220 return 0; /* max preference for home SP network */
2223 for (i = 0; i < cred->num_roaming_partner; i++) {
2224 if (roaming_partner_match(wpa_s, &cred->roaming_partner[i],
2225 bss->anqp->domain_name)) {
2226 wpa_printf(MSG_DEBUG, "Interworking: Roaming partner preference match - priority %u",
2227 cred->roaming_partner[i].priority);
2228 return cred->roaming_partner[i].priority;
2232 wpa_printf(MSG_DEBUG, "Interworking: No roaming partner preference match - use default roaming partner priority 128");
2237 static struct wpa_bss * pick_best_roaming_partner(struct wpa_supplicant *wpa_s,
2238 struct wpa_bss *selected,
2239 struct wpa_cred *cred)
2241 struct wpa_bss *bss;
2243 struct wpa_cred *cred2;
2246 * Check if any other BSS is operated by a more preferred roaming
2250 best_prio = roaming_prio(wpa_s, cred, selected);
2251 wpa_printf(MSG_DEBUG, "Interworking: roaming_prio=%u for selected BSS "
2252 MACSTR " (cred=%d)", best_prio, MAC2STR(selected->bssid),
2255 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
2256 if (bss == selected)
2258 cred2 = interworking_credentials_available(wpa_s, bss, NULL);
2261 if (!wpa_bss_get_ie(bss, WLAN_EID_RSN))
2263 prio = roaming_prio(wpa_s, cred2, bss);
2264 wpa_printf(MSG_DEBUG, "Interworking: roaming_prio=%u for BSS "
2265 MACSTR " (cred=%d)", prio, MAC2STR(bss->bssid),
2267 if (prio < best_prio) {
2268 int bh1, bh2, load1, load2, conn1, conn2;
2269 bh1 = cred_below_min_backhaul(wpa_s, cred, selected);
2270 load1 = cred_over_max_bss_load(wpa_s, cred, selected);
2271 conn1 = cred_conn_capab_missing(wpa_s, cred, selected);
2272 bh2 = cred_below_min_backhaul(wpa_s, cred2, bss);
2273 load2 = cred_over_max_bss_load(wpa_s, cred2, bss);
2274 conn2 = cred_conn_capab_missing(wpa_s, cred2, bss);
2275 wpa_printf(MSG_DEBUG, "Interworking: old: %d %d %d new: %d %d %d",
2276 bh1, load1, conn1, bh2, load2, conn2);
2277 if (bh1 || load1 || conn1 || !(bh2 || load2 || conn2)) {
2278 wpa_printf(MSG_DEBUG, "Interworking: Better roaming partner " MACSTR " selected", MAC2STR(bss->bssid));
2289 static void interworking_select_network(struct wpa_supplicant *wpa_s)
2291 struct wpa_bss *bss, *selected = NULL, *selected_home = NULL;
2292 struct wpa_bss *selected2 = NULL, *selected2_home = NULL;
2293 unsigned int count = 0;
2296 struct wpa_cred *cred, *selected_cred = NULL;
2297 struct wpa_cred *selected_home_cred = NULL;
2298 struct wpa_cred *selected2_cred = NULL;
2299 struct wpa_cred *selected2_home_cred = NULL;
2301 wpa_s->network_select = 0;
2303 wpa_printf(MSG_DEBUG, "Interworking: Select network (auto_select=%d)",
2304 wpa_s->auto_select);
2305 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
2307 int bh, bss_load, conn_capab;
2308 cred = interworking_credentials_available(wpa_s, bss,
2312 if (!wpa_bss_get_ie(bss, WLAN_EID_RSN)) {
2314 * We currently support only HS 2.0 networks and those
2315 * are required to use WPA2-Enterprise.
2317 wpa_printf(MSG_DEBUG, "Interworking: Credential match "
2318 "with " MACSTR " but network does not use "
2319 "RSN", MAC2STR(bss->bssid));
2324 res = interworking_home_sp(wpa_s, bss->anqp ?
2325 bss->anqp->domain_name : NULL);
2332 bh = cred_below_min_backhaul(wpa_s, cred, bss);
2333 bss_load = cred_over_max_bss_load(wpa_s, cred, bss);
2334 conn_capab = cred_conn_capab_missing(wpa_s, cred, bss);
2335 wpa_msg(wpa_s, MSG_INFO, "%s" MACSTR " type=%s%s%s%s id=%d priority=%d sp_priority=%d",
2336 excluded ? INTERWORKING_BLACKLISTED : INTERWORKING_AP,
2337 MAC2STR(bss->bssid), type,
2338 bh ? " below_min_backhaul=1" : "",
2339 bss_load ? " over_max_bss_load=1" : "",
2340 conn_capab ? " conn_capab_missing=1" : "",
2341 cred->id, cred->priority, cred->sp_priority);
2344 if (wpa_s->auto_select ||
2345 (wpa_s->conf->auto_interworking &&
2346 wpa_s->auto_network_select)) {
2347 if (bh || bss_load || conn_capab) {
2348 if (selected2_cred == NULL ||
2349 cred_prio_cmp(cred, selected2_cred) > 0) {
2350 wpa_printf(MSG_DEBUG, "Interworking: Mark as selected2");
2352 selected2_cred = cred;
2355 (selected2_home_cred == NULL ||
2356 cred_prio_cmp(cred, selected2_home_cred) >
2358 wpa_printf(MSG_DEBUG, "Interworking: Mark as selected2_home");
2359 selected2_home = bss;
2360 selected2_home_cred = cred;
2363 if (selected_cred == NULL ||
2364 cred_prio_cmp(cred, selected_cred) > 0) {
2365 wpa_printf(MSG_DEBUG, "Interworking: Mark as selected");
2367 selected_cred = cred;
2370 (selected_home_cred == NULL ||
2371 cred_prio_cmp(cred, selected_home_cred) >
2373 wpa_printf(MSG_DEBUG, "Interworking: Mark as selected_home");
2374 selected_home = bss;
2375 selected_home_cred = cred;
2381 if (selected_home && selected_home != selected &&
2382 selected_home_cred &&
2383 (selected_cred == NULL ||
2384 cred_prio_cmp(selected_home_cred, selected_cred) >= 0)) {
2385 /* Prefer network operated by the Home SP */
2386 wpa_printf(MSG_DEBUG, "Interworking: Overrided selected with selected_home");
2387 selected = selected_home;
2388 selected_cred = selected_home_cred;
2392 if (selected2_home) {
2393 wpa_printf(MSG_DEBUG, "Interworking: Use home BSS with BW limit mismatch since no other network could be selected");
2394 selected = selected2_home;
2395 selected_cred = selected2_home_cred;
2396 } else if (selected2) {
2397 wpa_printf(MSG_DEBUG, "Interworking: Use visited BSS with BW limit mismatch since no other network could be selected");
2398 selected = selected2;
2399 selected_cred = selected2_cred;
2405 * No matching network was found based on configured
2406 * credentials. Check whether any of the enabled network blocks
2407 * have matching APs.
2409 if (interworking_find_network_match(wpa_s)) {
2410 wpa_printf(MSG_DEBUG, "Interworking: Possible BSS "
2411 "match for enabled network configurations");
2412 if (wpa_s->auto_select) {
2413 interworking_reconnect(wpa_s);
2418 if (wpa_s->auto_network_select) {
2419 wpa_printf(MSG_DEBUG, "Interworking: Continue "
2420 "scanning after ANQP fetch");
2421 wpa_supplicant_req_scan(wpa_s, wpa_s->scan_interval,
2426 wpa_msg(wpa_s, MSG_INFO, INTERWORKING_NO_MATCH "No network "
2427 "with matching credentials found");
2431 wpa_printf(MSG_DEBUG, "Interworking: Selected " MACSTR,
2432 MAC2STR(selected->bssid));
2433 selected = pick_best_roaming_partner(wpa_s, selected,
2435 wpa_printf(MSG_DEBUG, "Interworking: Selected " MACSTR
2436 " (after best roaming partner selection)",
2437 MAC2STR(selected->bssid));
2438 wpa_msg(wpa_s, MSG_INFO, INTERWORKING_SELECTED MACSTR,
2439 MAC2STR(selected->bssid));
2440 interworking_connect(wpa_s, selected);
2445 static struct wpa_bss_anqp *
2446 interworking_match_anqp_info(struct wpa_supplicant *wpa_s, struct wpa_bss *bss)
2448 struct wpa_bss *other;
2450 if (is_zero_ether_addr(bss->hessid))
2451 return NULL; /* Cannot be in the same homegenous ESS */
2453 dl_list_for_each(other, &wpa_s->bss, struct wpa_bss, list) {
2456 if (other->anqp == NULL)
2458 if (other->anqp->roaming_consortium == NULL &&
2459 other->anqp->nai_realm == NULL &&
2460 other->anqp->anqp_3gpp == NULL &&
2461 other->anqp->domain_name == NULL)
2463 if (!(other->flags & WPA_BSS_ANQP_FETCH_TRIED))
2465 if (os_memcmp(bss->hessid, other->hessid, ETH_ALEN) != 0)
2467 if (bss->ssid_len != other->ssid_len ||
2468 os_memcmp(bss->ssid, other->ssid, bss->ssid_len) != 0)
2471 wpa_printf(MSG_DEBUG, "Interworking: Share ANQP data with "
2472 "already fetched BSSID " MACSTR " and " MACSTR,
2473 MAC2STR(other->bssid), MAC2STR(bss->bssid));
2474 other->anqp->users++;
2482 static void interworking_next_anqp_fetch(struct wpa_supplicant *wpa_s)
2484 struct wpa_bss *bss;
2488 wpa_printf(MSG_DEBUG, "Interworking: next_anqp_fetch - "
2489 "fetch_anqp_in_progress=%d fetch_osu_icon_in_progress=%d",
2490 wpa_s->fetch_anqp_in_progress,
2491 wpa_s->fetch_osu_icon_in_progress);
2493 if (eloop_terminated() || !wpa_s->fetch_anqp_in_progress) {
2494 wpa_printf(MSG_DEBUG, "Interworking: Stop next-ANQP-fetch");
2498 if (wpa_s->fetch_osu_icon_in_progress) {
2499 wpa_printf(MSG_DEBUG, "Interworking: Next icon (in progress)");
2500 hs20_next_osu_icon(wpa_s);
2504 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
2505 if (!(bss->caps & IEEE80211_CAP_ESS))
2507 ie = wpa_bss_get_ie(bss, WLAN_EID_EXT_CAPAB);
2508 if (ie == NULL || ie[1] < 4 || !(ie[5] & 0x80))
2509 continue; /* AP does not support Interworking */
2510 if (disallowed_bssid(wpa_s, bss->bssid) ||
2511 disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len))
2512 continue; /* Disallowed BSS */
2514 if (!(bss->flags & WPA_BSS_ANQP_FETCH_TRIED)) {
2515 if (bss->anqp == NULL) {
2516 bss->anqp = interworking_match_anqp_info(wpa_s,
2519 /* Shared data already fetched */
2522 bss->anqp = wpa_bss_anqp_alloc();
2523 if (bss->anqp == NULL)
2527 bss->flags |= WPA_BSS_ANQP_FETCH_TRIED;
2528 wpa_msg(wpa_s, MSG_INFO, "Starting ANQP fetch for "
2529 MACSTR, MAC2STR(bss->bssid));
2530 interworking_anqp_send_req(wpa_s, bss);
2536 if (wpa_s->fetch_osu_info) {
2537 if (wpa_s->num_prov_found == 0 &&
2538 wpa_s->fetch_osu_waiting_scan &&
2539 wpa_s->num_osu_scans < 3) {
2540 wpa_printf(MSG_DEBUG, "HS 2.0: No OSU providers seen - try to scan again");
2541 hs20_start_osu_scan(wpa_s);
2544 wpa_printf(MSG_DEBUG, "Interworking: Next icon");
2545 hs20_osu_icon_fetch(wpa_s);
2548 wpa_msg(wpa_s, MSG_INFO, "ANQP fetch completed");
2549 wpa_s->fetch_anqp_in_progress = 0;
2550 if (wpa_s->network_select)
2551 interworking_select_network(wpa_s);
2556 void interworking_start_fetch_anqp(struct wpa_supplicant *wpa_s)
2558 struct wpa_bss *bss;
2560 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list)
2561 bss->flags &= ~WPA_BSS_ANQP_FETCH_TRIED;
2563 wpa_s->fetch_anqp_in_progress = 1;
2566 * Start actual ANQP operation from eloop call to make sure the loop
2567 * does not end up using excessive recursion.
2569 eloop_register_timeout(0, 0, interworking_continue_anqp, wpa_s, NULL);
2573 int interworking_fetch_anqp(struct wpa_supplicant *wpa_s)
2575 if (wpa_s->fetch_anqp_in_progress || wpa_s->network_select)
2578 wpa_s->network_select = 0;
2579 wpa_s->fetch_all_anqp = 1;
2580 wpa_s->fetch_osu_info = 0;
2582 interworking_start_fetch_anqp(wpa_s);
2588 void interworking_stop_fetch_anqp(struct wpa_supplicant *wpa_s)
2590 if (!wpa_s->fetch_anqp_in_progress)
2593 wpa_s->fetch_anqp_in_progress = 0;
2597 int anqp_send_req(struct wpa_supplicant *wpa_s, const u8 *dst,
2598 u16 info_ids[], size_t num_ids, u32 subtypes)
2601 struct wpabuf *hs20_buf = NULL;
2604 struct wpa_bss *bss;
2607 freq = wpa_s->assoc_freq;
2608 bss = wpa_bss_get_bssid(wpa_s, dst);
2610 wpa_bss_anqp_unshare_alloc(bss);
2616 wpa_printf(MSG_DEBUG, "ANQP: Query Request to " MACSTR " for %u id(s)",
2617 MAC2STR(dst), (unsigned int) num_ids);
2620 if (subtypes != 0) {
2621 hs20_buf = wpabuf_alloc(100);
2622 if (hs20_buf == NULL)
2624 hs20_put_anqp_req(subtypes, NULL, 0, hs20_buf);
2626 #endif /* CONFIG_HS20 */
2628 buf = anqp_build_req(info_ids, num_ids, hs20_buf);
2629 wpabuf_free(hs20_buf);
2633 res = gas_query_req(wpa_s->gas, dst, freq, buf, anqp_resp_cb, wpa_s);
2635 wpa_printf(MSG_DEBUG, "ANQP: Failed to send Query Request");
2639 wpa_printf(MSG_DEBUG, "ANQP: Query started with dialog token "
2646 static void interworking_parse_rx_anqp_resp(struct wpa_supplicant *wpa_s,
2647 struct wpa_bss *bss, const u8 *sa,
2649 const u8 *data, size_t slen)
2651 const u8 *pos = data;
2652 struct wpa_bss_anqp *anqp = NULL;
2655 #endif /* CONFIG_HS20 */
2661 case ANQP_CAPABILITY_LIST:
2662 wpa_msg(wpa_s, MSG_INFO, "RX-ANQP " MACSTR
2663 " ANQP Capability list", MAC2STR(sa));
2665 case ANQP_VENUE_NAME:
2666 wpa_msg(wpa_s, MSG_INFO, "RX-ANQP " MACSTR
2667 " Venue Name", MAC2STR(sa));
2668 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: Venue Name", pos, slen);
2670 wpabuf_free(anqp->venue_name);
2671 anqp->venue_name = wpabuf_alloc_copy(pos, slen);
2674 case ANQP_NETWORK_AUTH_TYPE:
2675 wpa_msg(wpa_s, MSG_INFO, "RX-ANQP " MACSTR
2676 " Network Authentication Type information",
2678 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: Network Authentication "
2681 wpabuf_free(anqp->network_auth_type);
2682 anqp->network_auth_type = wpabuf_alloc_copy(pos, slen);
2685 case ANQP_ROAMING_CONSORTIUM:
2686 wpa_msg(wpa_s, MSG_INFO, "RX-ANQP " MACSTR
2687 " Roaming Consortium list", MAC2STR(sa));
2688 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: Roaming Consortium",
2691 wpabuf_free(anqp->roaming_consortium);
2692 anqp->roaming_consortium = wpabuf_alloc_copy(pos, slen);
2695 case ANQP_IP_ADDR_TYPE_AVAILABILITY:
2696 wpa_msg(wpa_s, MSG_INFO, "RX-ANQP " MACSTR
2697 " IP Address Type Availability information",
2699 wpa_hexdump(MSG_MSGDUMP, "ANQP: IP Address Availability",
2702 wpabuf_free(anqp->ip_addr_type_availability);
2703 anqp->ip_addr_type_availability =
2704 wpabuf_alloc_copy(pos, slen);
2707 case ANQP_NAI_REALM:
2708 wpa_msg(wpa_s, MSG_INFO, "RX-ANQP " MACSTR
2709 " NAI Realm list", MAC2STR(sa));
2710 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: NAI Realm", pos, slen);
2712 wpabuf_free(anqp->nai_realm);
2713 anqp->nai_realm = wpabuf_alloc_copy(pos, slen);
2716 case ANQP_3GPP_CELLULAR_NETWORK:
2717 wpa_msg(wpa_s, MSG_INFO, "RX-ANQP " MACSTR
2718 " 3GPP Cellular Network information", MAC2STR(sa));
2719 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: 3GPP Cellular Network",
2722 wpabuf_free(anqp->anqp_3gpp);
2723 anqp->anqp_3gpp = wpabuf_alloc_copy(pos, slen);
2726 case ANQP_DOMAIN_NAME:
2727 wpa_msg(wpa_s, MSG_INFO, "RX-ANQP " MACSTR
2728 " Domain Name list", MAC2STR(sa));
2729 wpa_hexdump_ascii(MSG_MSGDUMP, "ANQP: Domain Name", pos, slen);
2731 wpabuf_free(anqp->domain_name);
2732 anqp->domain_name = wpabuf_alloc_copy(pos, slen);
2735 case ANQP_VENDOR_SPECIFIC:
2739 switch (WPA_GET_BE24(pos)) {
2751 case HS20_ANQP_OUI_TYPE:
2752 hs20_parse_rx_hs20_anqp_resp(wpa_s, bss, sa,
2756 wpa_printf(MSG_DEBUG, "HS20: Unsupported ANQP "
2757 "vendor type %u", type);
2761 #endif /* CONFIG_HS20 */
2763 wpa_printf(MSG_DEBUG, "Interworking: Unsupported "
2764 "vendor-specific ANQP OUI %06x",
2770 wpa_printf(MSG_DEBUG, "Interworking: Unsupported ANQP Info ID "
2777 void anqp_resp_cb(void *ctx, const u8 *dst, u8 dialog_token,
2778 enum gas_query_result result,
2779 const struct wpabuf *adv_proto,
2780 const struct wpabuf *resp, u16 status_code)
2782 struct wpa_supplicant *wpa_s = ctx;
2787 struct wpa_bss *bss = NULL, *tmp;
2788 const char *anqp_result = "SUCCESS";
2790 wpa_printf(MSG_DEBUG, "Interworking: anqp_resp_cb dst=" MACSTR
2791 " dialog_token=%u result=%d status_code=%u",
2792 MAC2STR(dst), dialog_token, result, status_code);
2793 if (result != GAS_QUERY_SUCCESS) {
2794 if (wpa_s->fetch_osu_icon_in_progress)
2795 hs20_icon_fetch_failed(wpa_s);
2796 anqp_result = "FAILURE";
2800 pos = wpabuf_head(adv_proto);
2801 if (wpabuf_len(adv_proto) < 4 || pos[0] != WLAN_EID_ADV_PROTO ||
2802 pos[1] < 2 || pos[3] != ACCESS_NETWORK_QUERY_PROTOCOL) {
2803 wpa_printf(MSG_DEBUG, "ANQP: Unexpected Advertisement "
2804 "Protocol in response");
2805 if (wpa_s->fetch_osu_icon_in_progress)
2806 hs20_icon_fetch_failed(wpa_s);
2807 anqp_result = "INVALID_FRAME";
2812 * If possible, select the BSS entry based on which BSS entry was used
2813 * for the request. This can help in cases where multiple BSS entries
2814 * may exist for the same AP.
2816 dl_list_for_each_reverse(tmp, &wpa_s->bss, struct wpa_bss, list) {
2817 if (tmp == wpa_s->interworking_gas_bss &&
2818 os_memcmp(tmp->bssid, dst, ETH_ALEN) == 0) {
2824 bss = wpa_bss_get_bssid(wpa_s, dst);
2826 pos = wpabuf_head(resp);
2827 end = pos + wpabuf_len(resp);
2830 unsigned int left = end - pos;
2833 wpa_printf(MSG_DEBUG, "ANQP: Invalid element");
2834 anqp_result = "INVALID_FRAME";
2835 goto out_parse_done;
2837 info_id = WPA_GET_LE16(pos);
2839 slen = WPA_GET_LE16(pos);
2843 wpa_printf(MSG_DEBUG, "ANQP: Invalid element length "
2844 "for Info ID %u", info_id);
2845 anqp_result = "INVALID_FRAME";
2846 goto out_parse_done;
2848 interworking_parse_rx_anqp_resp(wpa_s, bss, dst, info_id, pos,
2854 hs20_notify_parse_done(wpa_s);
2856 wpa_msg(wpa_s, MSG_INFO, ANQP_QUERY_DONE "addr=" MACSTR " result=%s",
2857 MAC2STR(dst), anqp_result);
2861 static void interworking_scan_res_handler(struct wpa_supplicant *wpa_s,
2862 struct wpa_scan_results *scan_res)
2864 wpa_printf(MSG_DEBUG, "Interworking: Scan results available - start "
2866 interworking_start_fetch_anqp(wpa_s);
2870 int interworking_select(struct wpa_supplicant *wpa_s, int auto_select,
2873 interworking_stop_fetch_anqp(wpa_s);
2874 wpa_s->network_select = 1;
2875 wpa_s->auto_network_select = 0;
2876 wpa_s->auto_select = !!auto_select;
2877 wpa_s->fetch_all_anqp = 0;
2878 wpa_s->fetch_osu_info = 0;
2879 wpa_printf(MSG_DEBUG, "Interworking: Start scan for network "
2881 wpa_s->scan_res_handler = interworking_scan_res_handler;
2882 wpa_s->normal_scans = 0;
2883 wpa_s->scan_req = MANUAL_SCAN_REQ;
2884 os_free(wpa_s->manual_scan_freqs);
2885 wpa_s->manual_scan_freqs = freqs;
2886 wpa_s->after_wps = 0;
2887 wpa_s->known_wps_freq = 0;
2888 wpa_supplicant_req_scan(wpa_s, 0, 0);
2894 static void gas_resp_cb(void *ctx, const u8 *addr, u8 dialog_token,
2895 enum gas_query_result result,
2896 const struct wpabuf *adv_proto,
2897 const struct wpabuf *resp, u16 status_code)
2899 struct wpa_supplicant *wpa_s = ctx;
2902 wpa_msg(wpa_s, MSG_INFO, GAS_RESPONSE_INFO "addr=" MACSTR
2903 " dialog_token=%d status_code=%d resp_len=%d",
2904 MAC2STR(addr), dialog_token, status_code,
2905 resp ? (int) wpabuf_len(resp) : -1);
2909 n = wpabuf_dup(resp);
2912 wpabuf_free(wpa_s->prev_gas_resp);
2913 wpa_s->prev_gas_resp = wpa_s->last_gas_resp;
2914 os_memcpy(wpa_s->prev_gas_addr, wpa_s->last_gas_addr, ETH_ALEN);
2915 wpa_s->prev_gas_dialog_token = wpa_s->last_gas_dialog_token;
2916 wpa_s->last_gas_resp = n;
2917 os_memcpy(wpa_s->last_gas_addr, addr, ETH_ALEN);
2918 wpa_s->last_gas_dialog_token = dialog_token;
2922 int gas_send_request(struct wpa_supplicant *wpa_s, const u8 *dst,
2923 const struct wpabuf *adv_proto,
2924 const struct wpabuf *query)
2929 struct wpa_bss *bss;
2932 u8 query_resp_len_limit = 0;
2934 freq = wpa_s->assoc_freq;
2935 bss = wpa_bss_get_bssid(wpa_s, dst);
2941 wpa_printf(MSG_DEBUG, "GAS request to " MACSTR " (freq %d MHz)",
2942 MAC2STR(dst), freq);
2943 wpa_hexdump_buf(MSG_DEBUG, "Advertisement Protocol ID", adv_proto);
2944 wpa_hexdump_buf(MSG_DEBUG, "GAS Query", query);
2946 len = 3 + wpabuf_len(adv_proto) + 2;
2948 len += wpabuf_len(query);
2949 buf = gas_build_initial_req(0, len);
2953 /* Advertisement Protocol IE */
2954 wpabuf_put_u8(buf, WLAN_EID_ADV_PROTO);
2955 wpabuf_put_u8(buf, 1 + wpabuf_len(adv_proto)); /* Length */
2956 wpabuf_put_u8(buf, query_resp_len_limit & 0x7f);
2957 wpabuf_put_buf(buf, adv_proto);
2961 wpabuf_put_le16(buf, wpabuf_len(query));
2962 wpabuf_put_buf(buf, query);
2964 wpabuf_put_le16(buf, 0);
2966 res = gas_query_req(wpa_s->gas, dst, freq, buf, gas_resp_cb, wpa_s);
2968 wpa_printf(MSG_DEBUG, "GAS: Failed to send Query Request");
2972 wpa_printf(MSG_DEBUG, "GAS: Query started with dialog token "