--- /dev/null
+/*
+ * Interworking (IEEE 802.11u)
+ * Copyright (c) 2011-2013, Qualcomm Atheros, Inc.
+ * Copyright (c) 2011-2014, Jouni Malinen <j@w1.fi>
+ *
+ * This software may be distributed under the terms of the BSD license.
+ * See README for more details.
+ */
+
+#include "includes.h"
+
+#include "common.h"
+#include "common/ieee802_11_defs.h"
+#include "common/gas.h"
+#include "common/wpa_ctrl.h"
+#include "utils/pcsc_funcs.h"
+#include "utils/eloop.h"
+#include "drivers/driver.h"
+#include "eap_common/eap_defs.h"
+#include "eap_peer/eap.h"
+#include "eap_peer/eap_methods.h"
+#include "eapol_supp/eapol_supp_sm.h"
+#include "rsn_supp/wpa.h"
+#include "wpa_supplicant_i.h"
+#include "config.h"
+#include "config_ssid.h"
+#include "bss.h"
+#include "scan.h"
+#include "notify.h"
+#include "driver_i.h"
+#include "gas_query.h"
+#include "hs20_supplicant.h"
+#include "interworking.h"
+
+
+#if defined(EAP_SIM) | defined(EAP_SIM_DYNAMIC)
+#define INTERWORKING_3GPP
+#else
+#if defined(EAP_AKA) | defined(EAP_AKA_DYNAMIC)
+#define INTERWORKING_3GPP
+#else
+#if defined(EAP_AKA_PRIME) | defined(EAP_AKA_PRIME_DYNAMIC)
+#define INTERWORKING_3GPP
+#endif
+#endif
+#endif
+
+static void interworking_next_anqp_fetch(struct wpa_supplicant *wpa_s);
+static struct wpa_cred * interworking_credentials_available_realm(
+ struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw,
+ int *excluded);
+static struct wpa_cred * interworking_credentials_available_3gpp(
+ struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw,
+ int *excluded);
+
+
+static int cred_prio_cmp(const struct wpa_cred *a, const struct wpa_cred *b)
+{
+ if (a->priority > b->priority)
+ return 1;
+ if (a->priority < b->priority)
+ return -1;
+ if (a->provisioning_sp == NULL || b->provisioning_sp == NULL ||
+ os_strcmp(a->provisioning_sp, b->provisioning_sp) != 0)
+ return 0;
+ if (a->sp_priority < b->sp_priority)
+ return 1;
+ if (a->sp_priority > b->sp_priority)
+ return -1;
+ return 0;
+}
+
+
+static void interworking_reconnect(struct wpa_supplicant *wpa_s)
+{
+ unsigned int tried;
+
+ if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
+ wpa_supplicant_cancel_sched_scan(wpa_s);
+ wpa_s->own_disconnect_req = 1;
+ wpa_supplicant_deauthenticate(wpa_s,
+ WLAN_REASON_DEAUTH_LEAVING);
+ }
+ wpa_s->disconnected = 0;
+ wpa_s->reassociate = 1;
+ tried = wpa_s->interworking_fast_assoc_tried;
+ wpa_s->interworking_fast_assoc_tried = 1;
+
+ if (!tried && wpa_supplicant_fast_associate(wpa_s) >= 0)
+ return;
+
+ wpa_s->interworking_fast_assoc_tried = 0;
+ wpa_supplicant_req_scan(wpa_s, 0, 0);
+}
+
+
+static struct wpabuf * anqp_build_req(u16 info_ids[], size_t num_ids,
+ struct wpabuf *extra)
+{
+ struct wpabuf *buf;
+ size_t i;
+ u8 *len_pos;
+
+ buf = gas_anqp_build_initial_req(0, 4 + num_ids * 2 +
+ (extra ? wpabuf_len(extra) : 0));
+ if (buf == NULL)
+ return NULL;
+
+ len_pos = gas_anqp_add_element(buf, ANQP_QUERY_LIST);
+ for (i = 0; i < num_ids; i++)
+ wpabuf_put_le16(buf, info_ids[i]);
+ gas_anqp_set_element_len(buf, len_pos);
+ if (extra)
+ wpabuf_put_buf(buf, extra);
+
+ gas_anqp_set_len(buf);
+
+ return buf;
+}
+
+
+static void interworking_anqp_resp_cb(void *ctx, const u8 *dst,
+ u8 dialog_token,
+ enum gas_query_result result,
+ const struct wpabuf *adv_proto,
+ const struct wpabuf *resp,
+ u16 status_code)
+{
+ struct wpa_supplicant *wpa_s = ctx;
+
+ wpa_printf(MSG_DEBUG, "ANQP: Response callback dst=" MACSTR
+ " dialog_token=%u result=%d status_code=%u",
+ MAC2STR(dst), dialog_token, result, status_code);
+ anqp_resp_cb(wpa_s, dst, dialog_token, result, adv_proto, resp,
+ status_code);
+ interworking_next_anqp_fetch(wpa_s);
+}
+
+
+static int cred_with_roaming_consortium(struct wpa_supplicant *wpa_s)
+{
+ struct wpa_cred *cred;
+
+ for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
+ if (cred->roaming_consortium_len)
+ return 1;
+ if (cred->required_roaming_consortium_len)
+ return 1;
+ }
+ return 0;
+}
+
+
+static int cred_with_3gpp(struct wpa_supplicant *wpa_s)
+{
+ struct wpa_cred *cred;
+
+ for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
+ if (cred->pcsc || cred->imsi)
+ return 1;
+ }
+ return 0;
+}
+
+
+static int cred_with_nai_realm(struct wpa_supplicant *wpa_s)
+{
+ struct wpa_cred *cred;
+
+ for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
+ if (cred->pcsc || cred->imsi)
+ continue;
+ if (!cred->eap_method)
+ return 1;
+ if (cred->realm && cred->roaming_consortium_len == 0)
+ return 1;
+ }
+ return 0;
+}
+
+
+static int cred_with_domain(struct wpa_supplicant *wpa_s)
+{
+ struct wpa_cred *cred;
+
+ for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
+ if (cred->domain || cred->pcsc || cred->imsi ||
+ cred->roaming_partner)
+ return 1;
+ }
+ return 0;
+}
+
+
+#ifdef CONFIG_HS20
+
+static int cred_with_min_backhaul(struct wpa_supplicant *wpa_s)
+{
+ struct wpa_cred *cred;
+
+ for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
+ if (cred->min_dl_bandwidth_home ||
+ cred->min_ul_bandwidth_home ||
+ cred->min_dl_bandwidth_roaming ||
+ cred->min_ul_bandwidth_roaming)
+ return 1;
+ }
+ return 0;
+}
+
+
+static int cred_with_conn_capab(struct wpa_supplicant *wpa_s)
+{
+ struct wpa_cred *cred;
+
+ for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
+ if (cred->num_req_conn_capab)
+ return 1;
+ }
+ return 0;
+}
+
+#endif /* CONFIG_HS20 */
+
+
+static int additional_roaming_consortiums(struct wpa_bss *bss)
+{
+ const u8 *ie;
+ ie = wpa_bss_get_ie(bss, WLAN_EID_ROAMING_CONSORTIUM);
+ if (ie == NULL || ie[1] == 0)
+ return 0;
+ return ie[2]; /* Number of ANQP OIs */
+}
+
+
+static void interworking_continue_anqp(void *eloop_ctx, void *sock_ctx)
+{
+ struct wpa_supplicant *wpa_s = eloop_ctx;
+ interworking_next_anqp_fetch(wpa_s);
+}
+
+
+static int interworking_anqp_send_req(struct wpa_supplicant *wpa_s,
+ struct wpa_bss *bss)
+{
+ struct wpabuf *buf;
+ int ret = 0;
+ int res;
+ u16 info_ids[8];
+ size_t num_info_ids = 0;
+ struct wpabuf *extra = NULL;
+ int all = wpa_s->fetch_all_anqp;
+
+ wpa_msg(wpa_s, MSG_DEBUG, "Interworking: ANQP Query Request to " MACSTR,
+ MAC2STR(bss->bssid));
+ wpa_s->interworking_gas_bss = bss;
+
+ info_ids[num_info_ids++] = ANQP_CAPABILITY_LIST;
+ if (all) {
+ info_ids[num_info_ids++] = ANQP_VENUE_NAME;
+ info_ids[num_info_ids++] = ANQP_NETWORK_AUTH_TYPE;
+ }
+ if (all || (cred_with_roaming_consortium(wpa_s) &&
+ additional_roaming_consortiums(bss)))
+ info_ids[num_info_ids++] = ANQP_ROAMING_CONSORTIUM;
+ if (all)
+ info_ids[num_info_ids++] = ANQP_IP_ADDR_TYPE_AVAILABILITY;
+ if (all || cred_with_nai_realm(wpa_s))
+ info_ids[num_info_ids++] = ANQP_NAI_REALM;
+ if (all || cred_with_3gpp(wpa_s)) {
+ info_ids[num_info_ids++] = ANQP_3GPP_CELLULAR_NETWORK;
+ wpa_supplicant_scard_init(wpa_s, NULL);
+ }
+ if (all || cred_with_domain(wpa_s))
+ info_ids[num_info_ids++] = ANQP_DOMAIN_NAME;
+ wpa_hexdump(MSG_DEBUG, "Interworking: ANQP Query info",
+ (u8 *) info_ids, num_info_ids * 2);
+
+#ifdef CONFIG_HS20
+ if (wpa_bss_get_vendor_ie(bss, HS20_IE_VENDOR_TYPE)) {
+ u8 *len_pos;
+
+ extra = wpabuf_alloc(100);
+ if (!extra)
+ return -1;
+
+ len_pos = gas_anqp_add_element(extra, ANQP_VENDOR_SPECIFIC);
+ wpabuf_put_be24(extra, OUI_WFA);
+ wpabuf_put_u8(extra, HS20_ANQP_OUI_TYPE);
+ wpabuf_put_u8(extra, HS20_STYPE_QUERY_LIST);
+ wpabuf_put_u8(extra, 0); /* Reserved */
+ wpabuf_put_u8(extra, HS20_STYPE_CAPABILITY_LIST);
+ if (all)
+ wpabuf_put_u8(extra,
+ HS20_STYPE_OPERATOR_FRIENDLY_NAME);
+ if (all || cred_with_min_backhaul(wpa_s))
+ wpabuf_put_u8(extra, HS20_STYPE_WAN_METRICS);
+ if (all || cred_with_conn_capab(wpa_s))
+ wpabuf_put_u8(extra, HS20_STYPE_CONNECTION_CAPABILITY);
+ if (all)
+ wpabuf_put_u8(extra, HS20_STYPE_OPERATING_CLASS);
+ if (all)
+ wpabuf_put_u8(extra, HS20_STYPE_OSU_PROVIDERS_LIST);
+ gas_anqp_set_element_len(extra, len_pos);
+ }
+#endif /* CONFIG_HS20 */
+
+ buf = anqp_build_req(info_ids, num_info_ids, extra);
+ wpabuf_free(extra);
+ if (buf == NULL)
+ return -1;
+
+ res = gas_query_req(wpa_s->gas, bss->bssid, bss->freq, buf,
+ interworking_anqp_resp_cb, wpa_s);
+ if (res < 0) {
+ wpa_msg(wpa_s, MSG_DEBUG, "ANQP: Failed to send Query Request");
+ wpabuf_free(buf);
+ ret = -1;
+ eloop_register_timeout(0, 0, interworking_continue_anqp, wpa_s,
+ NULL);
+ } else
+ wpa_msg(wpa_s, MSG_DEBUG,
+ "ANQP: Query started with dialog token %u", res);
+
+ return ret;
+}
+
+
+struct nai_realm_eap {
+ u8 method;
+ u8 inner_method;
+ enum nai_realm_eap_auth_inner_non_eap inner_non_eap;
+ u8 cred_type;
+ u8 tunneled_cred_type;
+};
+
+struct nai_realm {
+ u8 encoding;
+ char *realm;
+ u8 eap_count;
+ struct nai_realm_eap *eap;
+};
+
+
+static void nai_realm_free(struct nai_realm *realms, u16 count)
+{
+ u16 i;
+
+ if (realms == NULL)
+ return;
+ for (i = 0; i < count; i++) {
+ os_free(realms[i].eap);
+ os_free(realms[i].realm);
+ }
+ os_free(realms);
+}
+
+
+static const u8 * nai_realm_parse_eap(struct nai_realm_eap *e, const u8 *pos,
+ const u8 *end)
+{
+ u8 elen, auth_count, a;
+ const u8 *e_end;
+
+ if (end - pos < 3) {
+ wpa_printf(MSG_DEBUG, "No room for EAP Method fixed fields");
+ return NULL;
+ }
+
+ elen = *pos++;
+ if (elen > end - pos || elen < 2) {
+ wpa_printf(MSG_DEBUG, "No room for EAP Method subfield");
+ return NULL;
+ }
+ e_end = pos + elen;
+ e->method = *pos++;
+ auth_count = *pos++;
+ wpa_printf(MSG_DEBUG, "EAP Method: len=%u method=%u auth_count=%u",
+ elen, e->method, auth_count);
+
+ for (a = 0; a < auth_count; a++) {
+ u8 id, len;
+
+ if (end - pos < 2) {
+ wpa_printf(MSG_DEBUG,
+ "No room for Authentication Parameter subfield header");
+ return NULL;
+ }
+
+ id = *pos++;
+ len = *pos++;
+ if (len > end - pos) {
+ wpa_printf(MSG_DEBUG,
+ "No room for Authentication Parameter subfield");
+ return NULL;
+ }
+
+ switch (id) {
+ case NAI_REALM_EAP_AUTH_NON_EAP_INNER_AUTH:
+ if (len < 1)
+ break;
+ e->inner_non_eap = *pos;
+ if (e->method != EAP_TYPE_TTLS)
+ break;
+ switch (*pos) {
+ case NAI_REALM_INNER_NON_EAP_PAP:
+ wpa_printf(MSG_DEBUG, "EAP-TTLS/PAP");
+ break;
+ case NAI_REALM_INNER_NON_EAP_CHAP:
+ wpa_printf(MSG_DEBUG, "EAP-TTLS/CHAP");
+ break;
+ case NAI_REALM_INNER_NON_EAP_MSCHAP:
+ wpa_printf(MSG_DEBUG, "EAP-TTLS/MSCHAP");
+ break;
+ case NAI_REALM_INNER_NON_EAP_MSCHAPV2:
+ wpa_printf(MSG_DEBUG, "EAP-TTLS/MSCHAPV2");
+ break;
+ }
+ break;
+ case NAI_REALM_EAP_AUTH_INNER_AUTH_EAP_METHOD:
+ if (len < 1)
+ break;
+ e->inner_method = *pos;
+ wpa_printf(MSG_DEBUG, "Inner EAP method: %u",
+ e->inner_method);
+ break;
+ case NAI_REALM_EAP_AUTH_CRED_TYPE:
+ if (len < 1)
+ break;
+ e->cred_type = *pos;
+ wpa_printf(MSG_DEBUG, "Credential Type: %u",
+ e->cred_type);
+ break;
+ case NAI_REALM_EAP_AUTH_TUNNELED_CRED_TYPE:
+ if (len < 1)
+ break;
+ e->tunneled_cred_type = *pos;
+ wpa_printf(MSG_DEBUG, "Tunneled EAP Method Credential "
+ "Type: %u", e->tunneled_cred_type);
+ break;
+ default:
+ wpa_printf(MSG_DEBUG, "Unsupported Authentication "
+ "Parameter: id=%u len=%u", id, len);
+ wpa_hexdump(MSG_DEBUG, "Authentication Parameter "
+ "Value", pos, len);
+ break;
+ }
+
+ pos += len;
+ }
+
+ return e_end;
+}
+
+
+static const u8 * nai_realm_parse_realm(struct nai_realm *r, const u8 *pos,
+ const u8 *end)
+{
+ u16 len;
+ const u8 *f_end;
+ u8 realm_len, e;
+
+ if (end - pos < 4) {
+ wpa_printf(MSG_DEBUG, "No room for NAI Realm Data "
+ "fixed fields");
+ return NULL;
+ }
+
+ len = WPA_GET_LE16(pos); /* NAI Realm Data field Length */
+ pos += 2;
+ if (len > end - pos || len < 3) {
+ wpa_printf(MSG_DEBUG, "No room for NAI Realm Data "
+ "(len=%u; left=%u)",
+ len, (unsigned int) (end - pos));
+ return NULL;
+ }
+ f_end = pos + len;
+
+ r->encoding = *pos++;
+ realm_len = *pos++;
+ if (realm_len > f_end - pos) {
+ wpa_printf(MSG_DEBUG, "No room for NAI Realm "
+ "(len=%u; left=%u)",
+ realm_len, (unsigned int) (f_end - pos));
+ return NULL;
+ }
+ wpa_hexdump_ascii(MSG_DEBUG, "NAI Realm", pos, realm_len);
+ r->realm = dup_binstr(pos, realm_len);
+ if (r->realm == NULL)
+ return NULL;
+ pos += realm_len;
+
+ if (f_end - pos < 1) {
+ wpa_printf(MSG_DEBUG, "No room for EAP Method Count");
+ return NULL;
+ }
+ r->eap_count = *pos++;
+ wpa_printf(MSG_DEBUG, "EAP Count: %u", r->eap_count);
+ if (r->eap_count * 3 > f_end - pos) {
+ wpa_printf(MSG_DEBUG, "No room for EAP Methods");
+ return NULL;
+ }
+ r->eap = os_calloc(r->eap_count, sizeof(struct nai_realm_eap));
+ if (r->eap == NULL)
+ return NULL;
+
+ for (e = 0; e < r->eap_count; e++) {
+ pos = nai_realm_parse_eap(&r->eap[e], pos, f_end);
+ if (pos == NULL)
+ return NULL;
+ }
+
+ return f_end;
+}
+
+
+static struct nai_realm * nai_realm_parse(struct wpabuf *anqp, u16 *count)
+{
+ struct nai_realm *realm;
+ const u8 *pos, *end;
+ u16 i, num;
+ size_t left;
+
+ if (anqp == NULL)
+ return NULL;
+ left = wpabuf_len(anqp);
+ if (left < 2)
+ return NULL;
+
+ pos = wpabuf_head_u8(anqp);
+ end = pos + left;
+ num = WPA_GET_LE16(pos);
+ wpa_printf(MSG_DEBUG, "NAI Realm Count: %u", num);
+ pos += 2;
+ left -= 2;
+
+ if (num > left / 5) {
+ wpa_printf(MSG_DEBUG, "Invalid NAI Realm Count %u - not "
+ "enough data (%u octets) for that many realms",
+ num, (unsigned int) left);
+ return NULL;
+ }
+
+ realm = os_calloc(num, sizeof(struct nai_realm));
+ if (realm == NULL)
+ return NULL;
+
+ for (i = 0; i < num; i++) {
+ pos = nai_realm_parse_realm(&realm[i], pos, end);
+ if (pos == NULL) {
+ nai_realm_free(realm, num);
+ return NULL;
+ }
+ }
+
+ *count = num;
+ return realm;
+}
+
+
+static int nai_realm_match(struct nai_realm *realm, const char *home_realm)
+{
+ char *tmp, *pos, *end;
+ int match = 0;
+
+ if (realm->realm == NULL || home_realm == NULL)
+ return 0;
+
+ if (os_strchr(realm->realm, ';') == NULL)
+ return os_strcasecmp(realm->realm, home_realm) == 0;
+
+ tmp = os_strdup(realm->realm);
+ if (tmp == NULL)
+ return 0;
+
+ pos = tmp;
+ while (*pos) {
+ end = os_strchr(pos, ';');
+ if (end)
+ *end = '\0';
+ if (os_strcasecmp(pos, home_realm) == 0) {
+ match = 1;
+ break;
+ }
+ if (end == NULL)
+ break;
+ pos = end + 1;
+ }
+
+ os_free(tmp);
+
+ return match;
+}
+
+
+static int nai_realm_cred_username(struct wpa_supplicant *wpa_s,
+ struct nai_realm_eap *eap)
+{
+ if (eap_get_name(EAP_VENDOR_IETF, eap->method) == NULL) {
+ wpa_msg(wpa_s, MSG_DEBUG,
+ "nai-realm-cred-username: EAP method not supported: %d",
+ eap->method);
+ return 0; /* method not supported */
+ }
+
+ if (eap->method != EAP_TYPE_TTLS && eap->method != EAP_TYPE_PEAP &&
+ eap->method != EAP_TYPE_FAST) {
+ /* Only tunneled methods with username/password supported */
+ wpa_msg(wpa_s, MSG_DEBUG,
+ "nai-realm-cred-username: Method: %d is not TTLS, PEAP, or FAST",
+ eap->method);
+ return 0;
+ }
+
+ if (eap->method == EAP_TYPE_PEAP || eap->method == EAP_TYPE_FAST) {
+ if (eap->inner_method &&
+ eap_get_name(EAP_VENDOR_IETF, eap->inner_method) == NULL) {
+ wpa_msg(wpa_s, MSG_DEBUG,
+ "nai-realm-cred-username: PEAP/FAST: Inner method not supported: %d",
+ eap->inner_method);
+ return 0;
+ }
+ if (!eap->inner_method &&
+ eap_get_name(EAP_VENDOR_IETF, EAP_TYPE_MSCHAPV2) == NULL) {
+ wpa_msg(wpa_s, MSG_DEBUG,
+ "nai-realm-cred-username: MSCHAPv2 not supported");
+ return 0;
+ }
+ }
+
+ if (eap->method == EAP_TYPE_TTLS) {
+ if (eap->inner_method == 0 && eap->inner_non_eap == 0)
+ return 1; /* Assume TTLS/MSCHAPv2 is used */
+ if (eap->inner_method &&
+ eap_get_name(EAP_VENDOR_IETF, eap->inner_method) == NULL) {
+ wpa_msg(wpa_s, MSG_DEBUG,
+ "nai-realm-cred-username: TTLS, but inner not supported: %d",
+ eap->inner_method);
+ return 0;
+ }
+ if (eap->inner_non_eap &&
+ eap->inner_non_eap != NAI_REALM_INNER_NON_EAP_PAP &&
+ eap->inner_non_eap != NAI_REALM_INNER_NON_EAP_CHAP &&
+ eap->inner_non_eap != NAI_REALM_INNER_NON_EAP_MSCHAP &&
+ eap->inner_non_eap != NAI_REALM_INNER_NON_EAP_MSCHAPV2) {
+ wpa_msg(wpa_s, MSG_DEBUG,
+ "nai-realm-cred-username: TTLS, inner-non-eap not supported: %d",
+ eap->inner_non_eap);
+ return 0;
+ }
+ }
+
+ if (eap->inner_method &&
+ eap->inner_method != EAP_TYPE_GTC &&
+ eap->inner_method != EAP_TYPE_MSCHAPV2) {
+ wpa_msg(wpa_s, MSG_DEBUG,
+ "nai-realm-cred-username: inner-method not GTC or MSCHAPv2: %d",
+ eap->inner_method);
+ return 0;
+ }
+
+ return 1;
+}
+
+
+static int nai_realm_cred_cert(struct wpa_supplicant *wpa_s,
+ struct nai_realm_eap *eap)
+{
+ if (eap_get_name(EAP_VENDOR_IETF, eap->method) == NULL) {
+ wpa_msg(wpa_s, MSG_DEBUG,
+ "nai-realm-cred-cert: Method not supported: %d",
+ eap->method);
+ return 0; /* method not supported */
+ }
+
+ if (eap->method != EAP_TYPE_TLS) {
+ /* Only EAP-TLS supported for credential authentication */
+ wpa_msg(wpa_s, MSG_DEBUG,
+ "nai-realm-cred-cert: Method not TLS: %d",
+ eap->method);
+ return 0;
+ }
+
+ return 1;
+}
+
+
+static struct nai_realm_eap * nai_realm_find_eap(struct wpa_supplicant *wpa_s,
+ struct wpa_cred *cred,
+ struct nai_realm *realm)
+{
+ u8 e;
+
+ if (cred->username == NULL ||
+ cred->username[0] == '\0' ||
+ ((cred->password == NULL ||
+ cred->password[0] == '\0') &&
+ (cred->private_key == NULL ||
+ cred->private_key[0] == '\0'))) {
+ wpa_msg(wpa_s, MSG_DEBUG,
+ "nai-realm-find-eap: incomplete cred info: username: %s password: %s private_key: %s",
+ cred->username ? cred->username : "NULL",
+ cred->password ? cred->password : "NULL",
+ cred->private_key ? cred->private_key : "NULL");
+ return NULL;
+ }
+
+ for (e = 0; e < realm->eap_count; e++) {
+ struct nai_realm_eap *eap = &realm->eap[e];
+ if (cred->password && cred->password[0] &&
+ nai_realm_cred_username(wpa_s, eap))
+ return eap;
+ if (cred->private_key && cred->private_key[0] &&
+ nai_realm_cred_cert(wpa_s, eap))
+ return eap;
+ }
+
+ return NULL;
+}
+
+
+#ifdef INTERWORKING_3GPP
+
+static int plmn_id_match(struct wpabuf *anqp, const char *imsi, int mnc_len)
+{
+ u8 plmn[3], plmn2[3];
+ const u8 *pos, *end;
+ u8 udhl;
+
+ /*
+ * See Annex A of 3GPP TS 24.234 v8.1.0 for description. The network
+ * operator is allowed to include only two digits of the MNC, so allow
+ * matches based on both two and three digit MNC assumptions. Since some
+ * SIM/USIM cards may not expose MNC length conveniently, we may be
+ * provided the default MNC length 3 here and as such, checking with MNC
+ * length 2 is justifiable even though 3GPP TS 24.234 does not mention
+ * that case. Anyway, MCC/MNC pair where both 2 and 3 digit MNC is used
+ * with otherwise matching values would not be good idea in general, so
+ * this should not result in selecting incorrect networks.
+ */
+ /* Match with 3 digit MNC */
+ plmn[0] = (imsi[0] - '0') | ((imsi[1] - '0') << 4);
+ plmn[1] = (imsi[2] - '0') | ((imsi[5] - '0') << 4);
+ plmn[2] = (imsi[3] - '0') | ((imsi[4] - '0') << 4);
+ /* Match with 2 digit MNC */
+ plmn2[0] = (imsi[0] - '0') | ((imsi[1] - '0') << 4);
+ plmn2[1] = (imsi[2] - '0') | 0xf0;
+ plmn2[2] = (imsi[3] - '0') | ((imsi[4] - '0') << 4);
+
+ if (anqp == NULL)
+ return 0;
+ pos = wpabuf_head_u8(anqp);
+ end = pos + wpabuf_len(anqp);
+ if (end - pos < 2)
+ return 0;
+ if (*pos != 0) {
+ wpa_printf(MSG_DEBUG, "Unsupported GUD version 0x%x", *pos);
+ return 0;
+ }
+ pos++;
+ udhl = *pos++;
+ if (udhl > end - pos) {
+ wpa_printf(MSG_DEBUG, "Invalid UDHL");
+ return 0;
+ }
+ end = pos + udhl;
+
+ wpa_printf(MSG_DEBUG, "Interworking: Matching against MCC/MNC alternatives: %02x:%02x:%02x or %02x:%02x:%02x (IMSI %s, MNC length %d)",
+ plmn[0], plmn[1], plmn[2], plmn2[0], plmn2[1], plmn2[2],
+ imsi, mnc_len);
+
+ while (end - pos >= 2) {
+ u8 iei, len;
+ const u8 *l_end;
+ iei = *pos++;
+ len = *pos++ & 0x7f;
+ if (len > end - pos)
+ break;
+ l_end = pos + len;
+
+ if (iei == 0 && len > 0) {
+ /* PLMN List */
+ u8 num, i;
+ wpa_hexdump(MSG_DEBUG, "Interworking: PLMN List information element",
+ pos, len);
+ num = *pos++;
+ for (i = 0; i < num; i++) {
+ if (l_end - pos < 3)
+ break;
+ if (os_memcmp(pos, plmn, 3) == 0 ||
+ os_memcmp(pos, plmn2, 3) == 0)
+ return 1; /* Found matching PLMN */
+ pos += 3;
+ }
+ } else {
+ wpa_hexdump(MSG_DEBUG, "Interworking: Unrecognized 3GPP information element",
+ pos, len);
+ }
+
+ pos = l_end;
+ }
+
+ return 0;
+}
+
+
+static int build_root_nai(char *nai, size_t nai_len, const char *imsi,
+ size_t mnc_len, char prefix)
+{
+ const char *sep, *msin;
+ char *end, *pos;
+ size_t msin_len, plmn_len;
+
+ /*
+ * TS 23.003, Clause 14 (3GPP to WLAN Interworking)
+ * Root NAI:
+ * <aka:0|sim:1><IMSI>@wlan.mnc<MNC>.mcc<MCC>.3gppnetwork.org
+ * <MNC> is zero-padded to three digits in case two-digit MNC is used
+ */
+
+ if (imsi == NULL || os_strlen(imsi) > 16) {
+ wpa_printf(MSG_DEBUG, "No valid IMSI available");
+ return -1;
+ }
+ sep = os_strchr(imsi, '-');
+ if (sep) {
+ plmn_len = sep - imsi;
+ msin = sep + 1;
+ } else if (mnc_len && os_strlen(imsi) >= 3 + mnc_len) {
+ plmn_len = 3 + mnc_len;
+ msin = imsi + plmn_len;
+ } else
+ return -1;
+ if (plmn_len != 5 && plmn_len != 6)
+ return -1;
+ msin_len = os_strlen(msin);
+
+ pos = nai;
+ end = nai + nai_len;
+ if (prefix)
+ *pos++ = prefix;
+ os_memcpy(pos, imsi, plmn_len);
+ pos += plmn_len;
+ os_memcpy(pos, msin, msin_len);
+ pos += msin_len;
+ pos += os_snprintf(pos, end - pos, "@wlan.mnc");
+ if (plmn_len == 5) {
+ *pos++ = '0';
+ *pos++ = imsi[3];
+ *pos++ = imsi[4];
+ } else {
+ *pos++ = imsi[3];
+ *pos++ = imsi[4];
+ *pos++ = imsi[5];
+ }
+ os_snprintf(pos, end - pos, ".mcc%c%c%c.3gppnetwork.org",
+ imsi[0], imsi[1], imsi[2]);
+
+ return 0;
+}
+
+
+static int set_root_nai(struct wpa_ssid *ssid, const char *imsi, char prefix)
+{
+ char nai[100];
+ if (build_root_nai(nai, sizeof(nai), imsi, 0, prefix) < 0)
+ return -1;
+ return wpa_config_set_quoted(ssid, "identity", nai);
+}
+
+#endif /* INTERWORKING_3GPP */
+
+
+static int already_connected(struct wpa_supplicant *wpa_s,
+ struct wpa_cred *cred, struct wpa_bss *bss)
+{
+ struct wpa_ssid *ssid, *sel_ssid;
+ struct wpa_bss *selected;
+
+ if (wpa_s->wpa_state < WPA_ASSOCIATED || wpa_s->current_ssid == NULL)
+ return 0;
+
+ ssid = wpa_s->current_ssid;
+ if (ssid->parent_cred != cred)
+ return 0;
+
+ if (ssid->ssid_len != bss->ssid_len ||
+ os_memcmp(ssid->ssid, bss->ssid, bss->ssid_len) != 0)
+ return 0;
+
+ sel_ssid = NULL;
+ selected = wpa_supplicant_pick_network(wpa_s, &sel_ssid);
+ if (selected && sel_ssid && sel_ssid->priority > ssid->priority)
+ return 0; /* higher priority network in scan results */
+
+ return 1;
+}
+
+
+static void remove_duplicate_network(struct wpa_supplicant *wpa_s,
+ struct wpa_cred *cred,
+ struct wpa_bss *bss)
+{
+ struct wpa_ssid *ssid;
+
+ for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
+ if (ssid->parent_cred != cred)
+ continue;
+ if (ssid->ssid_len != bss->ssid_len ||
+ os_memcmp(ssid->ssid, bss->ssid, bss->ssid_len) != 0)
+ continue;
+
+ break;
+ }
+
+ if (ssid == NULL)
+ return;
+
+ wpa_printf(MSG_DEBUG, "Interworking: Remove duplicate network entry for the same credential");
+
+ if (ssid == wpa_s->current_ssid) {
+ wpa_sm_set_config(wpa_s->wpa, NULL);
+ eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
+ wpa_s->own_disconnect_req = 1;
+ wpa_supplicant_deauthenticate(wpa_s,
+ WLAN_REASON_DEAUTH_LEAVING);
+ }
+
+ wpas_notify_network_removed(wpa_s, ssid);
+ wpa_config_remove_network(wpa_s->conf, ssid->id);
+}
+
+
+static int interworking_set_hs20_params(struct wpa_supplicant *wpa_s,
+ struct wpa_ssid *ssid)
+{
+ const char *key_mgmt = NULL;
+#ifdef CONFIG_IEEE80211R
+ int res;
+ struct wpa_driver_capa capa;
+
+ res = wpa_drv_get_capa(wpa_s, &capa);
+ if (res == 0 && capa.key_mgmt & WPA_DRIVER_CAPA_KEY_MGMT_FT) {
+ key_mgmt = wpa_s->conf->pmf != NO_MGMT_FRAME_PROTECTION ?
+ "WPA-EAP WPA-EAP-SHA256 FT-EAP" :
+ "WPA-EAP FT-EAP";
+ }
+#endif /* CONFIG_IEEE80211R */
+
+ if (!key_mgmt)
+ key_mgmt = wpa_s->conf->pmf != NO_MGMT_FRAME_PROTECTION ?
+ "WPA-EAP WPA-EAP-SHA256" : "WPA-EAP";
+ if (wpa_config_set(ssid, "key_mgmt", key_mgmt, 0) < 0 ||
+ wpa_config_set(ssid, "proto", "RSN", 0) < 0 ||
+ wpa_config_set(ssid, "pairwise", "CCMP", 0) < 0)
+ return -1;
+ return 0;
+}
+
+
+static int interworking_connect_3gpp(struct wpa_supplicant *wpa_s,
+ struct wpa_cred *cred,
+ struct wpa_bss *bss, int only_add)
+{
+#ifdef INTERWORKING_3GPP
+ struct wpa_ssid *ssid;
+ int eap_type;
+ int res;
+ char prefix;
+
+ if (bss->anqp == NULL || bss->anqp->anqp_3gpp == NULL)
+ return -1;
+
+ wpa_msg(wpa_s, MSG_DEBUG, "Interworking: Connect with " MACSTR
+ " (3GPP)", MAC2STR(bss->bssid));
+
+ if (already_connected(wpa_s, cred, bss)) {
+ wpa_msg(wpa_s, MSG_INFO, INTERWORKING_ALREADY_CONNECTED MACSTR,
+ MAC2STR(bss->bssid));
+ return wpa_s->current_ssid->id;
+ }
+
+ remove_duplicate_network(wpa_s, cred, bss);
+
+ ssid = wpa_config_add_network(wpa_s->conf);
+ if (ssid == NULL)
+ return -1;
+ ssid->parent_cred = cred;
+
+ wpas_notify_network_added(wpa_s, ssid);
+ wpa_config_set_network_defaults(ssid);
+ ssid->priority = cred->priority;
+ ssid->temporary = 1;
+ ssid->ssid = os_zalloc(bss->ssid_len + 1);
+ if (ssid->ssid == NULL)
+ goto fail;
+ os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
+ ssid->ssid_len = bss->ssid_len;
+ ssid->eap.sim_num = cred->sim_num;
+
+ if (interworking_set_hs20_params(wpa_s, ssid) < 0)
+ goto fail;
+
+ eap_type = EAP_TYPE_SIM;
+ if (cred->pcsc && wpa_s->scard && scard_supports_umts(wpa_s->scard))
+ eap_type = EAP_TYPE_AKA;
+ if (cred->eap_method && cred->eap_method[0].vendor == EAP_VENDOR_IETF) {
+ if (cred->eap_method[0].method == EAP_TYPE_SIM ||
+ cred->eap_method[0].method == EAP_TYPE_AKA ||
+ cred->eap_method[0].method == EAP_TYPE_AKA_PRIME)
+ eap_type = cred->eap_method[0].method;
+ }
+
+ switch (eap_type) {
+ case EAP_TYPE_SIM:
+ prefix = '1';
+ res = wpa_config_set(ssid, "eap", "SIM", 0);
+ break;
+ case EAP_TYPE_AKA:
+ prefix = '0';
+ res = wpa_config_set(ssid, "eap", "AKA", 0);
+ break;
+ case EAP_TYPE_AKA_PRIME:
+ prefix = '6';
+ res = wpa_config_set(ssid, "eap", "AKA'", 0);
+ break;
+ default:
+ res = -1;
+ break;
+ }
+ if (res < 0) {
+ wpa_msg(wpa_s, MSG_DEBUG,
+ "Selected EAP method (%d) not supported", eap_type);
+ goto fail;
+ }
+
+ if (!cred->pcsc && set_root_nai(ssid, cred->imsi, prefix) < 0) {
+ wpa_msg(wpa_s, MSG_DEBUG, "Failed to set Root NAI");
+ goto fail;
+ }
+
+ if (cred->milenage && cred->milenage[0]) {
+ if (wpa_config_set_quoted(ssid, "password",
+ cred->milenage) < 0)
+ goto fail;
+ } else if (cred->pcsc) {
+ if (wpa_config_set_quoted(ssid, "pcsc", "") < 0)
+ goto fail;
+ if (wpa_s->conf->pcsc_pin &&
+ wpa_config_set_quoted(ssid, "pin", wpa_s->conf->pcsc_pin)
+ < 0)
+ goto fail;
+ }
+
+ wpa_s->next_ssid = ssid;
+ wpa_config_update_prio_list(wpa_s->conf);
+ if (!only_add)
+ interworking_reconnect(wpa_s);
+
+ return ssid->id;
+
+fail:
+ wpas_notify_network_removed(wpa_s, ssid);
+ wpa_config_remove_network(wpa_s->conf, ssid->id);
+#endif /* INTERWORKING_3GPP */
+ return -1;
+}
+
+
+static int roaming_consortium_element_match(const u8 *ie, const u8 *rc_id,
+ size_t rc_len)
+{
+ const u8 *pos, *end;
+ u8 lens;
+
+ if (ie == NULL)
+ return 0;
+
+ pos = ie + 2;
+ end = ie + 2 + ie[1];
+
+ /* Roaming Consortium element:
+ * Number of ANQP OIs
+ * OI #1 and #2 lengths
+ * OI #1, [OI #2], [OI #3]
+ */
+
+ if (end - pos < 2)
+ return 0;
+
+ pos++; /* skip Number of ANQP OIs */
+ lens = *pos++;
+ if ((lens & 0x0f) + (lens >> 4) > end - pos)
+ return 0;
+
+ if ((lens & 0x0f) == rc_len && os_memcmp(pos, rc_id, rc_len) == 0)
+ return 1;
+ pos += lens & 0x0f;
+
+ if ((lens >> 4) == rc_len && os_memcmp(pos, rc_id, rc_len) == 0)
+ return 1;
+ pos += lens >> 4;
+
+ if (pos < end && (size_t) (end - pos) == rc_len &&
+ os_memcmp(pos, rc_id, rc_len) == 0)
+ return 1;
+
+ return 0;
+}
+
+
+static int roaming_consortium_anqp_match(const struct wpabuf *anqp,
+ const u8 *rc_id, size_t rc_len)
+{
+ const u8 *pos, *end;
+ u8 len;
+
+ if (anqp == NULL)
+ return 0;
+
+ pos = wpabuf_head(anqp);
+ end = pos + wpabuf_len(anqp);
+
+ /* Set of <OI Length, OI> duples */
+ while (pos < end) {
+ len = *pos++;
+ if (len > end - pos)
+ break;
+ if (len == rc_len && os_memcmp(pos, rc_id, rc_len) == 0)
+ return 1;
+ pos += len;
+ }
+
+ return 0;
+}
+
+
+static int roaming_consortium_match(const u8 *ie, const struct wpabuf *anqp,
+ const u8 *rc_id, size_t rc_len)
+{
+ return roaming_consortium_element_match(ie, rc_id, rc_len) ||
+ roaming_consortium_anqp_match(anqp, rc_id, rc_len);
+}
+
+
+static int cred_no_required_oi_match(struct wpa_cred *cred, struct wpa_bss *bss)
+{
+ const u8 *ie;
+
+ if (cred->required_roaming_consortium_len == 0)
+ return 0;
+
+ ie = wpa_bss_get_ie(bss, WLAN_EID_ROAMING_CONSORTIUM);
+
+ if (ie == NULL &&
+ (bss->anqp == NULL || bss->anqp->roaming_consortium == NULL))
+ return 1;
+
+ return !roaming_consortium_match(ie,
+ bss->anqp ?
+ bss->anqp->roaming_consortium : NULL,
+ cred->required_roaming_consortium,
+ cred->required_roaming_consortium_len);
+}
+
+
+static int cred_excluded_ssid(struct wpa_cred *cred, struct wpa_bss *bss)
+{
+ size_t i;
+
+ if (!cred->excluded_ssid)
+ return 0;
+
+ for (i = 0; i < cred->num_excluded_ssid; i++) {
+ struct excluded_ssid *e = &cred->excluded_ssid[i];
+ if (bss->ssid_len == e->ssid_len &&
+ os_memcmp(bss->ssid, e->ssid, e->ssid_len) == 0)
+ return 1;
+ }
+
+ return 0;
+}
+
+
+static int cred_below_min_backhaul(struct wpa_supplicant *wpa_s,
+ struct wpa_cred *cred, struct wpa_bss *bss)
+{
+#ifdef CONFIG_HS20
+ int res;
+ unsigned int dl_bandwidth, ul_bandwidth;
+ const u8 *wan;
+ u8 wan_info, dl_load, ul_load;
+ u16 lmd;
+ u32 ul_speed, dl_speed;
+
+ if (!cred->min_dl_bandwidth_home &&
+ !cred->min_ul_bandwidth_home &&
+ !cred->min_dl_bandwidth_roaming &&
+ !cred->min_ul_bandwidth_roaming)
+ return 0; /* No bandwidth constraint specified */
+
+ if (bss->anqp == NULL || bss->anqp->hs20_wan_metrics == NULL)
+ return 0; /* No WAN Metrics known - ignore constraint */
+
+ wan = wpabuf_head(bss->anqp->hs20_wan_metrics);
+ wan_info = wan[0];
+ if (wan_info & BIT(3))
+ return 1; /* WAN link at capacity */
+ lmd = WPA_GET_LE16(wan + 11);
+ if (lmd == 0)
+ return 0; /* Downlink/Uplink Load was not measured */
+ dl_speed = WPA_GET_LE32(wan + 1);
+ ul_speed = WPA_GET_LE32(wan + 5);
+ dl_load = wan[9];
+ ul_load = wan[10];
+
+ if (dl_speed >= 0xffffff)
+ dl_bandwidth = dl_speed / 255 * (255 - dl_load);
+ else
+ dl_bandwidth = dl_speed * (255 - dl_load) / 255;
+
+ if (ul_speed >= 0xffffff)
+ ul_bandwidth = ul_speed / 255 * (255 - ul_load);
+ else
+ ul_bandwidth = ul_speed * (255 - ul_load) / 255;
+
+ res = interworking_home_sp_cred(wpa_s, cred, bss->anqp ?
+ bss->anqp->domain_name : NULL);
+ if (res > 0) {
+ if (cred->min_dl_bandwidth_home > dl_bandwidth)
+ return 1;
+ if (cred->min_ul_bandwidth_home > ul_bandwidth)
+ return 1;
+ } else {
+ if (cred->min_dl_bandwidth_roaming > dl_bandwidth)
+ return 1;
+ if (cred->min_ul_bandwidth_roaming > ul_bandwidth)
+ return 1;
+ }
+#endif /* CONFIG_HS20 */
+
+ return 0;
+}
+
+
+static int cred_over_max_bss_load(struct wpa_supplicant *wpa_s,
+ struct wpa_cred *cred, struct wpa_bss *bss)
+{
+ const u8 *ie;
+ int res;
+
+ if (!cred->max_bss_load)
+ return 0; /* No BSS Load constraint specified */
+
+ ie = wpa_bss_get_ie(bss, WLAN_EID_BSS_LOAD);
+ if (ie == NULL || ie[1] < 3)
+ return 0; /* No BSS Load advertised */
+
+ res = interworking_home_sp_cred(wpa_s, cred, bss->anqp ?
+ bss->anqp->domain_name : NULL);
+ if (res <= 0)
+ return 0; /* Not a home network */
+
+ return ie[4] > cred->max_bss_load;
+}
+
+
+#ifdef CONFIG_HS20
+
+static int has_proto_match(const u8 *pos, const u8 *end, u8 proto)
+{
+ while (end - pos >= 4) {
+ if (pos[0] == proto && pos[3] == 1 /* Open */)
+ return 1;
+ pos += 4;
+ }
+
+ return 0;
+}
+
+
+static int has_proto_port_match(const u8 *pos, const u8 *end, u8 proto,
+ u16 port)
+{
+ while (end - pos >= 4) {
+ if (pos[0] == proto && WPA_GET_LE16(&pos[1]) == port &&
+ pos[3] == 1 /* Open */)
+ return 1;
+ pos += 4;
+ }
+
+ return 0;
+}
+
+#endif /* CONFIG_HS20 */
+
+
+static int cred_conn_capab_missing(struct wpa_supplicant *wpa_s,
+ struct wpa_cred *cred, struct wpa_bss *bss)
+{
+#ifdef CONFIG_HS20
+ int res;
+ const u8 *capab, *end;
+ unsigned int i, j;
+ int *ports;
+
+ if (!cred->num_req_conn_capab)
+ return 0; /* No connection capability constraint specified */
+
+ if (bss->anqp == NULL || bss->anqp->hs20_connection_capability == NULL)
+ return 0; /* No Connection Capability known - ignore constraint
+ */
+
+ res = interworking_home_sp_cred(wpa_s, cred, bss->anqp ?
+ bss->anqp->domain_name : NULL);
+ if (res > 0)
+ return 0; /* No constraint in home network */
+
+ capab = wpabuf_head(bss->anqp->hs20_connection_capability);
+ end = capab + wpabuf_len(bss->anqp->hs20_connection_capability);
+
+ for (i = 0; i < cred->num_req_conn_capab; i++) {
+ ports = cred->req_conn_capab_port[i];
+ if (!ports) {
+ if (!has_proto_match(capab, end,
+ cred->req_conn_capab_proto[i]))
+ return 1;
+ } else {
+ for (j = 0; ports[j] > -1; j++) {
+ if (!has_proto_port_match(
+ capab, end,
+ cred->req_conn_capab_proto[i],
+ ports[j]))
+ return 1;
+ }
+ }
+ }
+#endif /* CONFIG_HS20 */
+
+ return 0;
+}
+
+
+static struct wpa_cred * interworking_credentials_available_roaming_consortium(
+ struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw,
+ int *excluded)
+{
+ struct wpa_cred *cred, *selected = NULL;
+ const u8 *ie;
+ int is_excluded = 0;
+
+ ie = wpa_bss_get_ie(bss, WLAN_EID_ROAMING_CONSORTIUM);
+
+ if (ie == NULL &&
+ (bss->anqp == NULL || bss->anqp->roaming_consortium == NULL))
+ return NULL;
+
+ if (wpa_s->conf->cred == NULL)
+ return NULL;
+
+ for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
+ if (cred->roaming_consortium_len == 0)
+ continue;
+
+ if (!roaming_consortium_match(ie,
+ bss->anqp ?
+ bss->anqp->roaming_consortium :
+ NULL,
+ cred->roaming_consortium,
+ cred->roaming_consortium_len))
+ continue;
+
+ if (cred_no_required_oi_match(cred, bss))
+ continue;
+ if (!ignore_bw && cred_below_min_backhaul(wpa_s, cred, bss))
+ continue;
+ if (!ignore_bw && cred_over_max_bss_load(wpa_s, cred, bss))
+ continue;
+ if (!ignore_bw && cred_conn_capab_missing(wpa_s, cred, bss))
+ continue;
+ if (cred_excluded_ssid(cred, bss)) {
+ if (excluded == NULL)
+ continue;
+ if (selected == NULL) {
+ selected = cred;
+ is_excluded = 1;
+ }
+ } else {
+ if (selected == NULL || is_excluded ||
+ cred_prio_cmp(selected, cred) < 0) {
+ selected = cred;
+ is_excluded = 0;
+ }
+ }
+ }
+
+ if (excluded)
+ *excluded = is_excluded;
+
+ return selected;
+}
+
+
+static int interworking_set_eap_params(struct wpa_ssid *ssid,
+ struct wpa_cred *cred, int ttls)
+{
+ if (cred->eap_method) {
+ ttls = cred->eap_method->vendor == EAP_VENDOR_IETF &&
+ cred->eap_method->method == EAP_TYPE_TTLS;
+
+ os_free(ssid->eap.eap_methods);
+ ssid->eap.eap_methods =
+ os_malloc(sizeof(struct eap_method_type) * 2);
+ if (ssid->eap.eap_methods == NULL)
+ return -1;
+ os_memcpy(ssid->eap.eap_methods, cred->eap_method,
+ sizeof(*cred->eap_method));
+ ssid->eap.eap_methods[1].vendor = EAP_VENDOR_IETF;
+ ssid->eap.eap_methods[1].method = EAP_TYPE_NONE;
+ }
+
+ if (ttls && cred->username && cred->username[0]) {
+ const char *pos;
+ char *anon;
+ /* Use anonymous NAI in Phase 1 */
+ pos = os_strchr(cred->username, '@');
+ if (pos) {
+ size_t buflen = 9 + os_strlen(pos) + 1;
+ anon = os_malloc(buflen);
+ if (anon == NULL)
+ return -1;
+ os_snprintf(anon, buflen, "anonymous%s", pos);
+ } else if (cred->realm) {
+ size_t buflen = 10 + os_strlen(cred->realm) + 1;
+ anon = os_malloc(buflen);
+ if (anon == NULL)
+ return -1;
+ os_snprintf(anon, buflen, "anonymous@%s", cred->realm);
+ } else {
+ anon = os_strdup("anonymous");
+ if (anon == NULL)
+ return -1;
+ }
+ if (wpa_config_set_quoted(ssid, "anonymous_identity", anon) <
+ 0) {
+ os_free(anon);
+ return -1;
+ }
+ os_free(anon);
+ }
+
+ if (!ttls && cred->username && cred->username[0] && cred->realm &&
+ !os_strchr(cred->username, '@')) {
+ char *id;
+ size_t buflen;
+ int res;
+
+ buflen = os_strlen(cred->username) + 1 +
+ os_strlen(cred->realm) + 1;
+
+ id = os_malloc(buflen);
+ if (!id)
+ return -1;
+ os_snprintf(id, buflen, "%s@%s", cred->username, cred->realm);
+ res = wpa_config_set_quoted(ssid, "identity", id);
+ os_free(id);
+ if (res < 0)
+ return -1;
+ } else if (cred->username && cred->username[0] &&
+ wpa_config_set_quoted(ssid, "identity", cred->username) < 0)
+ return -1;
+
+ if (cred->password && cred->password[0]) {
+ if (cred->ext_password &&
+ wpa_config_set(ssid, "password", cred->password, 0) < 0)
+ return -1;
+ if (!cred->ext_password &&
+ wpa_config_set_quoted(ssid, "password", cred->password) <
+ 0)
+ return -1;
+ }
+
+ if (cred->client_cert && cred->client_cert[0] &&
+ wpa_config_set_quoted(ssid, "client_cert", cred->client_cert) < 0)
+ return -1;
+
+#ifdef ANDROID
+ if (cred->private_key &&
+ os_strncmp(cred->private_key, "keystore://", 11) == 0) {
+ /* Use OpenSSL engine configuration for Android keystore */
+ if (wpa_config_set_quoted(ssid, "engine_id", "keystore") < 0 ||
+ wpa_config_set_quoted(ssid, "key_id",
+ cred->private_key + 11) < 0 ||
+ wpa_config_set(ssid, "engine", "1", 0) < 0)
+ return -1;
+ } else
+#endif /* ANDROID */
+ if (cred->private_key && cred->private_key[0] &&
+ wpa_config_set_quoted(ssid, "private_key", cred->private_key) < 0)
+ return -1;
+
+ if (cred->private_key_passwd && cred->private_key_passwd[0] &&
+ wpa_config_set_quoted(ssid, "private_key_passwd",
+ cred->private_key_passwd) < 0)
+ return -1;
+
+ if (cred->phase1) {
+ os_free(ssid->eap.phase1);
+ ssid->eap.phase1 = os_strdup(cred->phase1);
+ }
+ if (cred->phase2) {
+ os_free(ssid->eap.phase2);
+ ssid->eap.phase2 = os_strdup(cred->phase2);
+ }
+
+ if (cred->ca_cert && cred->ca_cert[0] &&
+ wpa_config_set_quoted(ssid, "ca_cert", cred->ca_cert) < 0)
+ return -1;
+
+ if (cred->domain_suffix_match && cred->domain_suffix_match[0] &&
+ wpa_config_set_quoted(ssid, "domain_suffix_match",
+ cred->domain_suffix_match) < 0)
+ return -1;
+
+ ssid->eap.ocsp = cred->ocsp;
+
+ return 0;
+}
+
+
+static int interworking_connect_roaming_consortium(
+ struct wpa_supplicant *wpa_s, struct wpa_cred *cred,
+ struct wpa_bss *bss, int only_add)
+{
+ struct wpa_ssid *ssid;
+
+ wpa_msg(wpa_s, MSG_DEBUG, "Interworking: Connect with " MACSTR
+ " based on roaming consortium match", MAC2STR(bss->bssid));
+
+ if (already_connected(wpa_s, cred, bss)) {
+ wpa_msg(wpa_s, MSG_INFO, INTERWORKING_ALREADY_CONNECTED MACSTR,
+ MAC2STR(bss->bssid));
+ return wpa_s->current_ssid->id;
+ }
+
+ remove_duplicate_network(wpa_s, cred, bss);
+
+ ssid = wpa_config_add_network(wpa_s->conf);
+ if (ssid == NULL)
+ return -1;
+ ssid->parent_cred = cred;
+ wpas_notify_network_added(wpa_s, ssid);
+ wpa_config_set_network_defaults(ssid);
+ ssid->priority = cred->priority;
+ ssid->temporary = 1;
+ ssid->ssid = os_zalloc(bss->ssid_len + 1);
+ if (ssid->ssid == NULL)
+ goto fail;
+ os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
+ ssid->ssid_len = bss->ssid_len;
+
+ if (interworking_set_hs20_params(wpa_s, ssid) < 0)
+ goto fail;
+
+ if (cred->eap_method == NULL) {
+ wpa_msg(wpa_s, MSG_DEBUG,
+ "Interworking: No EAP method set for credential using roaming consortium");
+ goto fail;
+ }
+
+ if (interworking_set_eap_params(
+ ssid, cred,
+ cred->eap_method->vendor == EAP_VENDOR_IETF &&
+ cred->eap_method->method == EAP_TYPE_TTLS) < 0)
+ goto fail;
+
+ wpa_s->next_ssid = ssid;
+ wpa_config_update_prio_list(wpa_s->conf);
+ if (!only_add)
+ interworking_reconnect(wpa_s);
+
+ return ssid->id;
+
+fail:
+ wpas_notify_network_removed(wpa_s, ssid);
+ wpa_config_remove_network(wpa_s->conf, ssid->id);
+ return -1;
+}
+
+
+int interworking_connect(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
+ int only_add)
+{
+ struct wpa_cred *cred, *cred_rc, *cred_3gpp;
+ struct wpa_ssid *ssid;
+ struct nai_realm *realm;
+ struct nai_realm_eap *eap = NULL;
+ u16 count, i;
+ char buf[100];
+ int excluded = 0, *excl = &excluded;
+ const char *name;
+
+ if (wpa_s->conf->cred == NULL || bss == NULL)
+ return -1;
+ if (disallowed_bssid(wpa_s, bss->bssid) ||
+ disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len)) {
+ wpa_msg(wpa_s, MSG_DEBUG,
+ "Interworking: Reject connection to disallowed BSS "
+ MACSTR, MAC2STR(bss->bssid));
+ return -1;
+ }
+
+ wpa_printf(MSG_DEBUG, "Interworking: Considering BSS " MACSTR
+ " for connection",
+ MAC2STR(bss->bssid));
+
+ if (!wpa_bss_get_ie(bss, WLAN_EID_RSN)) {
+ /*
+ * We currently support only HS 2.0 networks and those are
+ * required to use WPA2-Enterprise.
+ */
+ wpa_msg(wpa_s, MSG_DEBUG,
+ "Interworking: Network does not use RSN");
+ return -1;
+ }
+
+ cred_rc = interworking_credentials_available_roaming_consortium(
+ wpa_s, bss, 0, excl);
+ if (cred_rc) {
+ wpa_msg(wpa_s, MSG_DEBUG,
+ "Interworking: Highest roaming consortium matching credential priority %d sp_priority %d",
+ cred_rc->priority, cred_rc->sp_priority);
+ if (excl && !(*excl))
+ excl = NULL;
+ }
+
+ cred = interworking_credentials_available_realm(wpa_s, bss, 0, excl);
+ if (cred) {
+ wpa_msg(wpa_s, MSG_DEBUG,
+ "Interworking: Highest NAI Realm list matching credential priority %d sp_priority %d",
+ cred->priority, cred->sp_priority);
+ if (excl && !(*excl))
+ excl = NULL;
+ }
+
+ cred_3gpp = interworking_credentials_available_3gpp(wpa_s, bss, 0,
+ excl);
+ if (cred_3gpp) {
+ wpa_msg(wpa_s, MSG_DEBUG,
+ "Interworking: Highest 3GPP matching credential priority %d sp_priority %d",
+ cred_3gpp->priority, cred_3gpp->sp_priority);
+ if (excl && !(*excl))
+ excl = NULL;
+ }
+
+ if (!cred_rc && !cred && !cred_3gpp) {
+ wpa_msg(wpa_s, MSG_DEBUG,
+ "Interworking: No full credential matches - consider options without BW(etc.) limits");
+ cred_rc = interworking_credentials_available_roaming_consortium(
+ wpa_s, bss, 1, excl);
+ if (cred_rc) {
+ wpa_msg(wpa_s, MSG_DEBUG,
+ "Interworking: Highest roaming consortium matching credential priority %d sp_priority %d (ignore BW)",
+ cred_rc->priority, cred_rc->sp_priority);
+ if (excl && !(*excl))
+ excl = NULL;
+ }
+
+ cred = interworking_credentials_available_realm(wpa_s, bss, 1,
+ excl);
+ if (cred) {
+ wpa_msg(wpa_s, MSG_DEBUG,
+ "Interworking: Highest NAI Realm list matching credential priority %d sp_priority %d (ignore BW)",
+ cred->priority, cred->sp_priority);
+ if (excl && !(*excl))
+ excl = NULL;
+ }
+
+ cred_3gpp = interworking_credentials_available_3gpp(wpa_s, bss,
+ 1, excl);
+ if (cred_3gpp) {
+ wpa_msg(wpa_s, MSG_DEBUG,
+ "Interworking: Highest 3GPP matching credential priority %d sp_priority %d (ignore BW)",
+ cred_3gpp->priority, cred_3gpp->sp_priority);
+ if (excl && !(*excl))
+ excl = NULL;
+ }
+ }
+
+ if (cred_rc &&
+ (cred == NULL || cred_prio_cmp(cred_rc, cred) >= 0) &&
+ (cred_3gpp == NULL || cred_prio_cmp(cred_rc, cred_3gpp) >= 0))
+ return interworking_connect_roaming_consortium(wpa_s, cred_rc,
+ bss, only_add);
+
+ if (cred_3gpp &&
+ (cred == NULL || cred_prio_cmp(cred_3gpp, cred) >= 0)) {
+ return interworking_connect_3gpp(wpa_s, cred_3gpp, bss,
+ only_add);
+ }
+
+ if (cred == NULL) {
+ wpa_msg(wpa_s, MSG_DEBUG,
+ "Interworking: No matching credentials found for "
+ MACSTR, MAC2STR(bss->bssid));
+ return -1;
+ }
+
+ realm = nai_realm_parse(bss->anqp ? bss->anqp->nai_realm : NULL,
+ &count);
+ if (realm == NULL) {
+ wpa_msg(wpa_s, MSG_DEBUG,
+ "Interworking: Could not parse NAI Realm list from "
+ MACSTR, MAC2STR(bss->bssid));
+ return -1;
+ }
+
+ for (i = 0; i < count; i++) {
+ if (!nai_realm_match(&realm[i], cred->realm))
+ continue;
+ eap = nai_realm_find_eap(wpa_s, cred, &realm[i]);
+ if (eap)
+ break;
+ }
+
+ if (!eap) {
+ wpa_msg(wpa_s, MSG_DEBUG,
+ "Interworking: No matching credentials and EAP method found for "
+ MACSTR, MAC2STR(bss->bssid));
+ nai_realm_free(realm, count);
+ return -1;
+ }
+
+ wpa_msg(wpa_s, MSG_DEBUG, "Interworking: Connect with " MACSTR,
+ MAC2STR(bss->bssid));
+
+ if (already_connected(wpa_s, cred, bss)) {
+ wpa_msg(wpa_s, MSG_INFO, INTERWORKING_ALREADY_CONNECTED MACSTR,
+ MAC2STR(bss->bssid));
+ nai_realm_free(realm, count);
+ return 0;
+ }
+
+ remove_duplicate_network(wpa_s, cred, bss);
+
+ ssid = wpa_config_add_network(wpa_s->conf);
+ if (ssid == NULL) {
+ nai_realm_free(realm, count);
+ return -1;
+ }
+ ssid->parent_cred = cred;
+ wpas_notify_network_added(wpa_s, ssid);
+ wpa_config_set_network_defaults(ssid);
+ ssid->priority = cred->priority;
+ ssid->temporary = 1;
+ ssid->ssid = os_zalloc(bss->ssid_len + 1);
+ if (ssid->ssid == NULL)
+ goto fail;
+ os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
+ ssid->ssid_len = bss->ssid_len;
+
+ if (interworking_set_hs20_params(wpa_s, ssid) < 0)
+ goto fail;
+
+ if (wpa_config_set(ssid, "eap", eap_get_name(EAP_VENDOR_IETF,
+ eap->method), 0) < 0)
+ goto fail;
+
+ switch (eap->method) {
+ case EAP_TYPE_TTLS:
+ if (eap->inner_method) {
+ os_snprintf(buf, sizeof(buf), "\"autheap=%s\"",
+ eap_get_name(EAP_VENDOR_IETF,
+ eap->inner_method));
+ if (wpa_config_set(ssid, "phase2", buf, 0) < 0)
+ goto fail;
+ break;
+ }
+ switch (eap->inner_non_eap) {
+ case NAI_REALM_INNER_NON_EAP_PAP:
+ if (wpa_config_set(ssid, "phase2", "\"auth=PAP\"", 0) <
+ 0)
+ goto fail;
+ break;
+ case NAI_REALM_INNER_NON_EAP_CHAP:
+ if (wpa_config_set(ssid, "phase2", "\"auth=CHAP\"", 0)
+ < 0)
+ goto fail;
+ break;
+ case NAI_REALM_INNER_NON_EAP_MSCHAP:
+ if (wpa_config_set(ssid, "phase2", "\"auth=MSCHAP\"",
+ 0) < 0)
+ goto fail;
+ break;
+ case NAI_REALM_INNER_NON_EAP_MSCHAPV2:
+ if (wpa_config_set(ssid, "phase2", "\"auth=MSCHAPV2\"",
+ 0) < 0)
+ goto fail;
+ break;
+ default:
+ /* EAP params were not set - assume TTLS/MSCHAPv2 */
+ if (wpa_config_set(ssid, "phase2", "\"auth=MSCHAPV2\"",
+ 0) < 0)
+ goto fail;
+ break;
+ }
+ break;
+ case EAP_TYPE_PEAP:
+ case EAP_TYPE_FAST:
+ if (wpa_config_set(ssid, "phase1", "\"fast_provisioning=2\"",
+ 0) < 0)
+ goto fail;
+ if (wpa_config_set(ssid, "pac_file",
+ "\"blob://pac_interworking\"", 0) < 0)
+ goto fail;
+ name = eap_get_name(EAP_VENDOR_IETF,
+ eap->inner_method ? eap->inner_method :
+ EAP_TYPE_MSCHAPV2);
+ if (name == NULL)
+ goto fail;
+ os_snprintf(buf, sizeof(buf), "\"auth=%s\"", name);
+ if (wpa_config_set(ssid, "phase2", buf, 0) < 0)
+ goto fail;
+ break;
+ case EAP_TYPE_TLS:
+ break;
+ }
+
+ if (interworking_set_eap_params(ssid, cred,
+ eap->method == EAP_TYPE_TTLS) < 0)
+ goto fail;
+
+ nai_realm_free(realm, count);
+
+ wpa_s->next_ssid = ssid;
+ wpa_config_update_prio_list(wpa_s->conf);
+ if (!only_add)
+ interworking_reconnect(wpa_s);
+
+ return ssid->id;
+
+fail:
+ wpas_notify_network_removed(wpa_s, ssid);
+ wpa_config_remove_network(wpa_s->conf, ssid->id);
+ nai_realm_free(realm, count);
+ return -1;
+}
+
+
+#ifdef PCSC_FUNCS
+static int interworking_pcsc_read_imsi(struct wpa_supplicant *wpa_s)
+{
+ size_t len;
+
+ if (wpa_s->imsi[0] && wpa_s->mnc_len)
+ return 0;
+
+ len = sizeof(wpa_s->imsi) - 1;
+ if (scard_get_imsi(wpa_s->scard, wpa_s->imsi, &len)) {
+ scard_deinit(wpa_s->scard);
+ wpa_s->scard = NULL;
+ wpa_msg(wpa_s, MSG_ERROR, "Could not read IMSI");
+ return -1;
+ }
+ wpa_s->imsi[len] = '\0';
+ wpa_s->mnc_len = scard_get_mnc_len(wpa_s->scard);
+ wpa_printf(MSG_DEBUG, "SCARD: IMSI %s (MNC length %d)",
+ wpa_s->imsi, wpa_s->mnc_len);
+
+ return 0;
+}
+#endif /* PCSC_FUNCS */
+
+
+static struct wpa_cred * interworking_credentials_available_3gpp(
+ struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw,
+ int *excluded)
+{
+ struct wpa_cred *selected = NULL;
+#ifdef INTERWORKING_3GPP
+ struct wpa_cred *cred;
+ int ret;
+ int is_excluded = 0;
+
+ if (bss->anqp == NULL || bss->anqp->anqp_3gpp == NULL) {
+ wpa_msg(wpa_s, MSG_DEBUG,
+ "interworking-avail-3gpp: not avail, anqp: %p anqp_3gpp: %p",
+ bss->anqp, bss->anqp ? bss->anqp->anqp_3gpp : NULL);
+ return NULL;
+ }
+
+#ifdef CONFIG_EAP_PROXY
+ if (!wpa_s->imsi[0]) {
+ size_t len;
+ wpa_msg(wpa_s, MSG_DEBUG,
+ "Interworking: IMSI not available - try to read again through eap_proxy");
+ wpa_s->mnc_len = eapol_sm_get_eap_proxy_imsi(wpa_s->eapol,
+ wpa_s->imsi,
+ &len);
+ if (wpa_s->mnc_len > 0) {
+ wpa_s->imsi[len] = '\0';
+ wpa_msg(wpa_s, MSG_DEBUG,
+ "eap_proxy: IMSI %s (MNC length %d)",
+ wpa_s->imsi, wpa_s->mnc_len);
+ } else {
+ wpa_msg(wpa_s, MSG_DEBUG,
+ "eap_proxy: IMSI not available");
+ }
+ }
+#endif /* CONFIG_EAP_PROXY */
+
+ for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
+ char *sep;
+ const char *imsi;
+ int mnc_len;
+ char imsi_buf[16];
+ size_t msin_len;
+
+#ifdef PCSC_FUNCS
+ if (cred->pcsc && wpa_s->scard) {
+ if (interworking_pcsc_read_imsi(wpa_s) < 0)
+ continue;
+ imsi = wpa_s->imsi;
+ mnc_len = wpa_s->mnc_len;
+ goto compare;
+ }
+#endif /* PCSC_FUNCS */
+#ifdef CONFIG_EAP_PROXY
+ if (cred->pcsc && wpa_s->mnc_len > 0 && wpa_s->imsi[0]) {
+ imsi = wpa_s->imsi;
+ mnc_len = wpa_s->mnc_len;
+ goto compare;
+ }
+#endif /* CONFIG_EAP_PROXY */
+
+ if (cred->imsi == NULL || !cred->imsi[0] ||
+ (!wpa_s->conf->external_sim &&
+ (cred->milenage == NULL || !cred->milenage[0])))
+ continue;
+
+ sep = os_strchr(cred->imsi, '-');
+ if (sep == NULL ||
+ (sep - cred->imsi != 5 && sep - cred->imsi != 6))
+ continue;
+ mnc_len = sep - cred->imsi - 3;
+ os_memcpy(imsi_buf, cred->imsi, 3 + mnc_len);
+ sep++;
+ msin_len = os_strlen(cred->imsi);
+ if (3 + mnc_len + msin_len >= sizeof(imsi_buf) - 1)
+ msin_len = sizeof(imsi_buf) - 3 - mnc_len - 1;
+ os_memcpy(&imsi_buf[3 + mnc_len], sep, msin_len);
+ imsi_buf[3 + mnc_len + msin_len] = '\0';
+ imsi = imsi_buf;
+
+#if defined(PCSC_FUNCS) || defined(CONFIG_EAP_PROXY)
+ compare:
+#endif /* PCSC_FUNCS || CONFIG_EAP_PROXY */
+ wpa_msg(wpa_s, MSG_DEBUG,
+ "Interworking: Parsing 3GPP info from " MACSTR,
+ MAC2STR(bss->bssid));
+ ret = plmn_id_match(bss->anqp->anqp_3gpp, imsi, mnc_len);
+ wpa_msg(wpa_s, MSG_DEBUG, "PLMN match %sfound",
+ ret ? "" : "not ");
+ if (ret) {
+ if (cred_no_required_oi_match(cred, bss))
+ continue;
+ if (!ignore_bw &&
+ cred_below_min_backhaul(wpa_s, cred, bss))
+ continue;
+ if (!ignore_bw &&
+ cred_over_max_bss_load(wpa_s, cred, bss))
+ continue;
+ if (!ignore_bw &&
+ cred_conn_capab_missing(wpa_s, cred, bss))
+ continue;
+ if (cred_excluded_ssid(cred, bss)) {
+ if (excluded == NULL)
+ continue;
+ if (selected == NULL) {
+ selected = cred;
+ is_excluded = 1;
+ }
+ } else {
+ if (selected == NULL || is_excluded ||
+ cred_prio_cmp(selected, cred) < 0) {
+ selected = cred;
+ is_excluded = 0;
+ }
+ }
+ }
+ }
+
+ if (excluded)
+ *excluded = is_excluded;
+#endif /* INTERWORKING_3GPP */
+ return selected;
+}
+
+
+static struct wpa_cred * interworking_credentials_available_realm(
+ struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw,
+ int *excluded)
+{
+ struct wpa_cred *cred, *selected = NULL;
+ struct nai_realm *realm;
+ u16 count, i;
+ int is_excluded = 0;
+
+ if (bss->anqp == NULL || bss->anqp->nai_realm == NULL)
+ return NULL;
+
+ if (wpa_s->conf->cred == NULL)
+ return NULL;
+
+ wpa_msg(wpa_s, MSG_DEBUG, "Interworking: Parsing NAI Realm list from "
+ MACSTR, MAC2STR(bss->bssid));
+ realm = nai_realm_parse(bss->anqp->nai_realm, &count);
+ if (realm == NULL) {
+ wpa_msg(wpa_s, MSG_DEBUG,
+ "Interworking: Could not parse NAI Realm list from "
+ MACSTR, MAC2STR(bss->bssid));
+ return NULL;
+ }
+
+ for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
+ if (cred->realm == NULL)
+ continue;
+
+ for (i = 0; i < count; i++) {
+ if (!nai_realm_match(&realm[i], cred->realm))
+ continue;
+ if (nai_realm_find_eap(wpa_s, cred, &realm[i])) {
+ if (cred_no_required_oi_match(cred, bss))
+ continue;
+ if (!ignore_bw &&
+ cred_below_min_backhaul(wpa_s, cred, bss))
+ continue;
+ if (!ignore_bw &&
+ cred_over_max_bss_load(wpa_s, cred, bss))
+ continue;
+ if (!ignore_bw &&
+ cred_conn_capab_missing(wpa_s, cred, bss))
+ continue;
+ if (cred_excluded_ssid(cred, bss)) {
+ if (excluded == NULL)
+ continue;
+ if (selected == NULL) {
+ selected = cred;
+ is_excluded = 1;
+ }
+ } else {
+ if (selected == NULL || is_excluded ||
+ cred_prio_cmp(selected, cred) < 0)
+ {
+ selected = cred;
+ is_excluded = 0;
+ }
+ }
+ break;
+ } else {
+ wpa_msg(wpa_s, MSG_DEBUG,
+ "Interworking: realm-find-eap returned false");
+ }
+ }
+ }
+
+ nai_realm_free(realm, count);
+
+ if (excluded)
+ *excluded = is_excluded;
+
+ return selected;
+}
+
+
+static struct wpa_cred * interworking_credentials_available_helper(
+ struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw,
+ int *excluded)
+{
+ struct wpa_cred *cred, *cred2;
+ int excluded1, excluded2 = 0;
+
+ if (disallowed_bssid(wpa_s, bss->bssid) ||
+ disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len)) {
+ wpa_printf(MSG_DEBUG, "Interworking: Ignore disallowed BSS "
+ MACSTR, MAC2STR(bss->bssid));
+ return NULL;
+ }
+
+ cred = interworking_credentials_available_realm(wpa_s, bss, ignore_bw,
+ &excluded1);
+ cred2 = interworking_credentials_available_3gpp(wpa_s, bss, ignore_bw,
+ &excluded2);
+ if (cred && cred2 &&
+ (cred_prio_cmp(cred2, cred) >= 0 || (!excluded2 && excluded1))) {
+ cred = cred2;
+ excluded1 = excluded2;
+ }
+ if (!cred) {
+ cred = cred2;
+ excluded1 = excluded2;
+ }
+
+ cred2 = interworking_credentials_available_roaming_consortium(
+ wpa_s, bss, ignore_bw, &excluded2);
+ if (cred && cred2 &&
+ (cred_prio_cmp(cred2, cred) >= 0 || (!excluded2 && excluded1))) {
+ cred = cred2;
+ excluded1 = excluded2;
+ }
+ if (!cred) {
+ cred = cred2;
+ excluded1 = excluded2;
+ }
+
+ if (excluded)
+ *excluded = excluded1;
+ return cred;
+}
+
+
+static struct wpa_cred * interworking_credentials_available(
+ struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int *excluded)
+{
+ struct wpa_cred *cred;
+
+ if (excluded)
+ *excluded = 0;
+ cred = interworking_credentials_available_helper(wpa_s, bss, 0,
+ excluded);
+ if (cred)
+ return cred;
+ return interworking_credentials_available_helper(wpa_s, bss, 1,
+ excluded);
+}
+
+
+int domain_name_list_contains(struct wpabuf *domain_names,
+ const char *domain, int exact_match)
+{
+ const u8 *pos, *end;
+ size_t len;
+
+ len = os_strlen(domain);
+ pos = wpabuf_head(domain_names);
+ end = pos + wpabuf_len(domain_names);
+
+ while (end - pos > 1) {
+ u8 elen;
+
+ elen = *pos++;
+ if (elen > end - pos)
+ break;
+
+ wpa_hexdump_ascii(MSG_DEBUG, "Interworking: AP domain name",
+ pos, elen);
+ if (elen == len &&
+ os_strncasecmp(domain, (const char *) pos, len) == 0)
+ return 1;
+ if (!exact_match && elen > len && pos[elen - len - 1] == '.') {
+ const char *ap = (const char *) pos;
+ int offset = elen - len;
+
+ if (os_strncasecmp(domain, ap + offset, len) == 0)
+ return 1;
+ }
+
+ pos += elen;
+ }
+
+ return 0;
+}
+
+
+int interworking_home_sp_cred(struct wpa_supplicant *wpa_s,
+ struct wpa_cred *cred,
+ struct wpabuf *domain_names)
+{
+ size_t i;
+ int ret = -1;
+#ifdef INTERWORKING_3GPP
+ char nai[100], *realm;
+
+ char *imsi = NULL;
+ int mnc_len = 0;
+ if (cred->imsi)
+ imsi = cred->imsi;
+#ifdef PCSC_FUNCS
+ else if (cred->pcsc && wpa_s->scard) {
+ if (interworking_pcsc_read_imsi(wpa_s) < 0)
+ return -1;
+ imsi = wpa_s->imsi;
+ mnc_len = wpa_s->mnc_len;
+ }
+#endif /* PCSC_FUNCS */
+#ifdef CONFIG_EAP_PROXY
+ else if (cred->pcsc && wpa_s->mnc_len > 0 && wpa_s->imsi[0]) {
+ imsi = wpa_s->imsi;
+ mnc_len = wpa_s->mnc_len;
+ }
+#endif /* CONFIG_EAP_PROXY */
+ if (domain_names &&
+ imsi && build_root_nai(nai, sizeof(nai), imsi, mnc_len, 0) == 0) {
+ realm = os_strchr(nai, '@');
+ if (realm)
+ realm++;
+ wpa_msg(wpa_s, MSG_DEBUG,
+ "Interworking: Search for match with SIM/USIM domain %s",
+ realm);
+ if (realm &&
+ domain_name_list_contains(domain_names, realm, 1))
+ return 1;
+ if (realm)
+ ret = 0;
+ }
+#endif /* INTERWORKING_3GPP */
+
+ if (domain_names == NULL || cred->domain == NULL)
+ return ret;
+
+ for (i = 0; i < cred->num_domain; i++) {
+ wpa_msg(wpa_s, MSG_DEBUG,
+ "Interworking: Search for match with home SP FQDN %s",
+ cred->domain[i]);
+ if (domain_name_list_contains(domain_names, cred->domain[i], 1))
+ return 1;
+ }
+
+ return 0;
+}
+
+
+static int interworking_home_sp(struct wpa_supplicant *wpa_s,
+ struct wpabuf *domain_names)
+{
+ struct wpa_cred *cred;
+
+ if (domain_names == NULL || wpa_s->conf->cred == NULL)
+ return -1;
+
+ for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
+ int res = interworking_home_sp_cred(wpa_s, cred, domain_names);
+ if (res)
+ return res;
+ }
+
+ return 0;
+}
+
+
+static int interworking_find_network_match(struct wpa_supplicant *wpa_s)
+{
+ struct wpa_bss *bss;
+ struct wpa_ssid *ssid;
+
+ dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
+ for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
+ if (wpas_network_disabled(wpa_s, ssid) ||
+ ssid->mode != WPAS_MODE_INFRA)
+ continue;
+ if (ssid->ssid_len != bss->ssid_len ||
+ os_memcmp(ssid->ssid, bss->ssid, ssid->ssid_len) !=
+ 0)
+ continue;
+ /*
+ * TODO: Consider more accurate matching of security
+ * configuration similarly to what is done in events.c
+ */
+ return 1;
+ }
+ }
+
+ return 0;
+}
+
+
+static int roaming_partner_match(struct wpa_supplicant *wpa_s,
+ struct roaming_partner *partner,
+ struct wpabuf *domain_names)
+{
+ wpa_printf(MSG_DEBUG, "Interworking: Comparing roaming_partner info fqdn='%s' exact_match=%d priority=%u country='%s'",
+ partner->fqdn, partner->exact_match, partner->priority,
+ partner->country);
+ wpa_hexdump_ascii(MSG_DEBUG, "Interworking: Domain names",
+ wpabuf_head(domain_names),
+ wpabuf_len(domain_names));
+ if (!domain_name_list_contains(domain_names, partner->fqdn,
+ partner->exact_match))
+ return 0;
+ /* TODO: match Country */
+ return 1;
+}
+
+
+static u8 roaming_prio(struct wpa_supplicant *wpa_s, struct wpa_cred *cred,
+ struct wpa_bss *bss)
+{
+ size_t i;
+
+ if (bss->anqp == NULL || bss->anqp->domain_name == NULL) {
+ wpa_printf(MSG_DEBUG, "Interworking: No ANQP domain name info -> use default roaming partner priority 128");
+ return 128; /* cannot check preference with domain name */
+ }
+
+ if (interworking_home_sp_cred(wpa_s, cred, bss->anqp->domain_name) > 0)
+ {
+ wpa_printf(MSG_DEBUG, "Interworking: Determined to be home SP -> use maximum preference 0 as roaming partner priority");
+ return 0; /* max preference for home SP network */
+ }
+
+ for (i = 0; i < cred->num_roaming_partner; i++) {
+ if (roaming_partner_match(wpa_s, &cred->roaming_partner[i],
+ bss->anqp->domain_name)) {
+ wpa_printf(MSG_DEBUG, "Interworking: Roaming partner preference match - priority %u",
+ cred->roaming_partner[i].priority);
+ return cred->roaming_partner[i].priority;
+ }
+ }
+
+ wpa_printf(MSG_DEBUG, "Interworking: No roaming partner preference match - use default roaming partner priority 128");
+ return 128;
+}
+
+
+static struct wpa_bss * pick_best_roaming_partner(struct wpa_supplicant *wpa_s,
+ struct wpa_bss *selected,
+ struct wpa_cred *cred)
+{
+ struct wpa_bss *bss;
+ u8 best_prio, prio;
+ struct wpa_cred *cred2;
+
+ /*
+ * Check if any other BSS is operated by a more preferred roaming
+ * partner.
+ */
+
+ best_prio = roaming_prio(wpa_s, cred, selected);
+ wpa_printf(MSG_DEBUG, "Interworking: roaming_prio=%u for selected BSS "
+ MACSTR " (cred=%d)", best_prio, MAC2STR(selected->bssid),
+ cred->id);
+
+ dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
+ if (bss == selected)
+ continue;
+ cred2 = interworking_credentials_available(wpa_s, bss, NULL);
+ if (!cred2)
+ continue;
+ if (!wpa_bss_get_ie(bss, WLAN_EID_RSN))
+ continue;
+ prio = roaming_prio(wpa_s, cred2, bss);
+ wpa_printf(MSG_DEBUG, "Interworking: roaming_prio=%u for BSS "
+ MACSTR " (cred=%d)", prio, MAC2STR(bss->bssid),
+ cred2->id);
+ if (prio < best_prio) {
+ int bh1, bh2, load1, load2, conn1, conn2;
+ bh1 = cred_below_min_backhaul(wpa_s, cred, selected);
+ load1 = cred_over_max_bss_load(wpa_s, cred, selected);
+ conn1 = cred_conn_capab_missing(wpa_s, cred, selected);
+ bh2 = cred_below_min_backhaul(wpa_s, cred2, bss);
+ load2 = cred_over_max_bss_load(wpa_s, cred2, bss);
+ conn2 = cred_conn_capab_missing(wpa_s, cred2, bss);
+ wpa_printf(MSG_DEBUG, "Interworking: old: %d %d %d new: %d %d %d",
+ bh1, load1, conn1, bh2, load2, conn2);
+ if (bh1 || load1 || conn1 || !(bh2 || load2 || conn2)) {
+ wpa_printf(MSG_DEBUG, "Interworking: Better roaming partner " MACSTR " selected", MAC2STR(bss->bssid));
+ best_prio = prio;
+ selected = bss;
+ }
+ }
+ }
+
+ return selected;
+}
+
+
+static void interworking_select_network(struct wpa_supplicant *wpa_s)
+{
+ struct wpa_bss *bss, *selected = NULL, *selected_home = NULL;
+ struct wpa_bss *selected2 = NULL, *selected2_home = NULL;
+ unsigned int count = 0;
+ const char *type;
+ int res;
+ struct wpa_cred *cred, *selected_cred = NULL;
+ struct wpa_cred *selected_home_cred = NULL;
+ struct wpa_cred *selected2_cred = NULL;
+ struct wpa_cred *selected2_home_cred = NULL;
+
+ wpa_s->network_select = 0;
+
+ wpa_printf(MSG_DEBUG, "Interworking: Select network (auto_select=%d)",
+ wpa_s->auto_select);
+ dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
+ int excluded = 0;
+ int bh, bss_load, conn_capab;
+ cred = interworking_credentials_available(wpa_s, bss,
+ &excluded);
+ if (!cred)
+ continue;
+
+ if (!wpa_bss_get_ie(bss, WLAN_EID_RSN)) {
+ /*
+ * We currently support only HS 2.0 networks and those
+ * are required to use WPA2-Enterprise.
+ */
+ wpa_msg(wpa_s, MSG_DEBUG,
+ "Interworking: Credential match with " MACSTR
+ " but network does not use RSN",
+ MAC2STR(bss->bssid));
+ continue;
+ }
+ if (!excluded)
+ count++;
+ res = interworking_home_sp(wpa_s, bss->anqp ?
+ bss->anqp->domain_name : NULL);
+ if (res > 0)
+ type = "home";
+ else if (res == 0)
+ type = "roaming";
+ else
+ type = "unknown";
+ bh = cred_below_min_backhaul(wpa_s, cred, bss);
+ bss_load = cred_over_max_bss_load(wpa_s, cred, bss);
+ conn_capab = cred_conn_capab_missing(wpa_s, cred, bss);
+ wpa_msg(wpa_s, MSG_INFO, "%s" MACSTR " type=%s%s%s%s id=%d priority=%d sp_priority=%d",
+ excluded ? INTERWORKING_BLACKLISTED : INTERWORKING_AP,
+ MAC2STR(bss->bssid), type,
+ bh ? " below_min_backhaul=1" : "",
+ bss_load ? " over_max_bss_load=1" : "",
+ conn_capab ? " conn_capab_missing=1" : "",
+ cred->id, cred->priority, cred->sp_priority);
+ if (excluded)
+ continue;
+ if (wpa_s->auto_select ||
+ (wpa_s->conf->auto_interworking &&
+ wpa_s->auto_network_select)) {
+ if (bh || bss_load || conn_capab) {
+ if (selected2_cred == NULL ||
+ cred_prio_cmp(cred, selected2_cred) > 0) {
+ wpa_printf(MSG_DEBUG, "Interworking: Mark as selected2");
+ selected2 = bss;
+ selected2_cred = cred;
+ }
+ if (res > 0 &&
+ (selected2_home_cred == NULL ||
+ cred_prio_cmp(cred, selected2_home_cred) >
+ 0)) {
+ wpa_printf(MSG_DEBUG, "Interworking: Mark as selected2_home");
+ selected2_home = bss;
+ selected2_home_cred = cred;
+ }
+ } else {
+ if (selected_cred == NULL ||
+ cred_prio_cmp(cred, selected_cred) > 0) {
+ wpa_printf(MSG_DEBUG, "Interworking: Mark as selected");
+ selected = bss;
+ selected_cred = cred;
+ }
+ if (res > 0 &&
+ (selected_home_cred == NULL ||
+ cred_prio_cmp(cred, selected_home_cred) >
+ 0)) {
+ wpa_printf(MSG_DEBUG, "Interworking: Mark as selected_home");
+ selected_home = bss;
+ selected_home_cred = cred;
+ }
+ }
+ }
+ }
+
+ if (selected_home && selected_home != selected &&
+ selected_home_cred &&
+ (selected_cred == NULL ||
+ cred_prio_cmp(selected_home_cred, selected_cred) >= 0)) {
+ /* Prefer network operated by the Home SP */
+ wpa_printf(MSG_DEBUG, "Interworking: Overrided selected with selected_home");
+ selected = selected_home;
+ selected_cred = selected_home_cred;
+ }
+
+ if (!selected) {
+ if (selected2_home) {
+ wpa_printf(MSG_DEBUG, "Interworking: Use home BSS with BW limit mismatch since no other network could be selected");
+ selected = selected2_home;
+ selected_cred = selected2_home_cred;
+ } else if (selected2) {
+ wpa_printf(MSG_DEBUG, "Interworking: Use visited BSS with BW limit mismatch since no other network could be selected");
+ selected = selected2;
+ selected_cred = selected2_cred;
+ }
+ }
+
+ if (count == 0) {
+ /*
+ * No matching network was found based on configured
+ * credentials. Check whether any of the enabled network blocks
+ * have matching APs.
+ */
+ if (interworking_find_network_match(wpa_s)) {
+ wpa_msg(wpa_s, MSG_DEBUG,
+ "Interworking: Possible BSS match for enabled network configurations");
+ if (wpa_s->auto_select) {
+ interworking_reconnect(wpa_s);
+ return;
+ }
+ }
+
+ if (wpa_s->auto_network_select) {
+ wpa_msg(wpa_s, MSG_DEBUG,
+ "Interworking: Continue scanning after ANQP fetch");
+ wpa_supplicant_req_scan(wpa_s, wpa_s->scan_interval,
+ 0);
+ return;
+ }
+
+ wpa_msg(wpa_s, MSG_INFO, INTERWORKING_NO_MATCH "No network "
+ "with matching credentials found");
+ if (wpa_s->wpa_state == WPA_SCANNING)
+ wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
+ }
+
+ if (selected) {
+ wpa_printf(MSG_DEBUG, "Interworking: Selected " MACSTR,
+ MAC2STR(selected->bssid));
+ selected = pick_best_roaming_partner(wpa_s, selected,
+ selected_cred);
+ wpa_printf(MSG_DEBUG, "Interworking: Selected " MACSTR
+ " (after best roaming partner selection)",
+ MAC2STR(selected->bssid));
+ wpa_msg(wpa_s, MSG_INFO, INTERWORKING_SELECTED MACSTR,
+ MAC2STR(selected->bssid));
+ interworking_connect(wpa_s, selected, 0);
+ }
+}
+
+
+static struct wpa_bss_anqp *
+interworking_match_anqp_info(struct wpa_supplicant *wpa_s, struct wpa_bss *bss)
+{
+ struct wpa_bss *other;
+
+ if (is_zero_ether_addr(bss->hessid))
+ return NULL; /* Cannot be in the same homegenous ESS */
+
+ dl_list_for_each(other, &wpa_s->bss, struct wpa_bss, list) {
+ if (other == bss)
+ continue;
+ if (other->anqp == NULL)
+ continue;
+ if (other->anqp->roaming_consortium == NULL &&
+ other->anqp->nai_realm == NULL &&
+ other->anqp->anqp_3gpp == NULL &&
+ other->anqp->domain_name == NULL)
+ continue;
+ if (!(other->flags & WPA_BSS_ANQP_FETCH_TRIED))
+ continue;
+ if (os_memcmp(bss->hessid, other->hessid, ETH_ALEN) != 0)
+ continue;
+ if (bss->ssid_len != other->ssid_len ||
+ os_memcmp(bss->ssid, other->ssid, bss->ssid_len) != 0)
+ continue;
+
+ wpa_msg(wpa_s, MSG_DEBUG,
+ "Interworking: Share ANQP data with already fetched BSSID "
+ MACSTR " and " MACSTR,
+ MAC2STR(other->bssid), MAC2STR(bss->bssid));
+ other->anqp->users++;
+ return other->anqp;
+ }
+
+ return NULL;
+}
+
+
+static void interworking_next_anqp_fetch(struct wpa_supplicant *wpa_s)
+{
+ struct wpa_bss *bss;
+ int found = 0;
+ const u8 *ie;
+
+ wpa_printf(MSG_DEBUG, "Interworking: next_anqp_fetch - "
+ "fetch_anqp_in_progress=%d fetch_osu_icon_in_progress=%d",
+ wpa_s->fetch_anqp_in_progress,
+ wpa_s->fetch_osu_icon_in_progress);
+
+ if (eloop_terminated() || !wpa_s->fetch_anqp_in_progress) {
+ wpa_printf(MSG_DEBUG, "Interworking: Stop next-ANQP-fetch");
+ return;
+ }
+
+#ifdef CONFIG_HS20
+ if (wpa_s->fetch_osu_icon_in_progress) {
+ wpa_printf(MSG_DEBUG, "Interworking: Next icon (in progress)");
+ hs20_next_osu_icon(wpa_s);
+ return;
+ }
+#endif /* CONFIG_HS20 */
+
+ dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
+ if (!(bss->caps & IEEE80211_CAP_ESS))
+ continue;
+ ie = wpa_bss_get_ie(bss, WLAN_EID_EXT_CAPAB);
+ if (ie == NULL || ie[1] < 4 || !(ie[5] & 0x80))
+ continue; /* AP does not support Interworking */
+ if (disallowed_bssid(wpa_s, bss->bssid) ||
+ disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len))
+ continue; /* Disallowed BSS */
+
+ if (!(bss->flags & WPA_BSS_ANQP_FETCH_TRIED)) {
+ if (bss->anqp == NULL) {
+ bss->anqp = interworking_match_anqp_info(wpa_s,
+ bss);
+ if (bss->anqp) {
+ /* Shared data already fetched */
+ continue;
+ }
+ bss->anqp = wpa_bss_anqp_alloc();
+ if (bss->anqp == NULL)
+ break;
+ }
+ found++;
+ bss->flags |= WPA_BSS_ANQP_FETCH_TRIED;
+ wpa_msg(wpa_s, MSG_INFO, "Starting ANQP fetch for "
+ MACSTR, MAC2STR(bss->bssid));
+ interworking_anqp_send_req(wpa_s, bss);
+ break;
+ }
+ }
+
+ if (found == 0) {
+#ifdef CONFIG_HS20
+ if (wpa_s->fetch_osu_info) {
+ if (wpa_s->num_prov_found == 0 &&
+ wpa_s->fetch_osu_waiting_scan &&
+ wpa_s->num_osu_scans < 3) {
+ wpa_printf(MSG_DEBUG, "HS 2.0: No OSU providers seen - try to scan again");
+ hs20_start_osu_scan(wpa_s);
+ return;
+ }
+ wpa_printf(MSG_DEBUG, "Interworking: Next icon");
+ hs20_osu_icon_fetch(wpa_s);
+ return;
+ }
+#endif /* CONFIG_HS20 */
+ wpa_msg(wpa_s, MSG_INFO, "ANQP fetch completed");
+ wpa_s->fetch_anqp_in_progress = 0;
+ if (wpa_s->network_select)
+ interworking_select_network(wpa_s);
+ }
+}
+
+
+void interworking_start_fetch_anqp(struct wpa_supplicant *wpa_s)
+{
+ struct wpa_bss *bss;
+
+ dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list)
+ bss->flags &= ~WPA_BSS_ANQP_FETCH_TRIED;
+
+ wpa_s->fetch_anqp_in_progress = 1;
+
+ /*
+ * Start actual ANQP operation from eloop call to make sure the loop
+ * does not end up using excessive recursion.
+ */
+ eloop_register_timeout(0, 0, interworking_continue_anqp, wpa_s, NULL);
+}
+
+
+int interworking_fetch_anqp(struct wpa_supplicant *wpa_s)
+{
+ if (wpa_s->fetch_anqp_in_progress || wpa_s->network_select)
+ return 0;
+
+ wpa_s->network_select = 0;
+ wpa_s->fetch_all_anqp = 1;
+ wpa_s->fetch_osu_info = 0;
+
+ interworking_start_fetch_anqp(wpa_s);
+
+ return 0;
+}
+
+
+void interworking_stop_fetch_anqp(struct wpa_supplicant *wpa_s)
+{
+ if (!wpa_s->fetch_anqp_in_progress)
+ return;
+
+ wpa_s->fetch_anqp_in_progress = 0;
+}
+
+
+int anqp_send_req(struct wpa_supplicant *wpa_s, const u8 *dst,
+ u16 info_ids[], size_t num_ids, u32 subtypes,
+ int get_cell_pref)
+{
+ struct wpabuf *buf;
+ struct wpabuf *extra_buf = NULL;
+ int ret = 0;
+ int freq;
+ struct wpa_bss *bss;
+ int res;
+
+ bss = wpa_bss_get_bssid(wpa_s, dst);
+ if (!bss) {
+ wpa_printf(MSG_WARNING,
+ "ANQP: Cannot send query to unknown BSS "
+ MACSTR, MAC2STR(dst));
+ return -1;
+ }
+
+ wpa_bss_anqp_unshare_alloc(bss);
+ freq = bss->freq;
+
+ wpa_msg(wpa_s, MSG_DEBUG,
+ "ANQP: Query Request to " MACSTR " for %u id(s)",
+ MAC2STR(dst), (unsigned int) num_ids);
+
+#ifdef CONFIG_HS20
+ if (subtypes != 0) {
+ extra_buf = wpabuf_alloc(100);
+ if (extra_buf == NULL)
+ return -1;
+ hs20_put_anqp_req(subtypes, NULL, 0, extra_buf);
+ }
+#endif /* CONFIG_HS20 */
+
+#ifdef CONFIG_MBO
+ if (get_cell_pref) {
+ struct wpabuf *mbo;
+
+ mbo = mbo_build_anqp_buf(wpa_s, bss);
+ if (mbo) {
+ if (wpabuf_resize(&extra_buf, wpabuf_len(mbo))) {
+ wpabuf_free(extra_buf);
+ return -1;
+ }
+ wpabuf_put_buf(extra_buf, mbo);
+ wpabuf_free(mbo);
+ }
+ }
+#endif /* CONFIG_MBO */
+
+ buf = anqp_build_req(info_ids, num_ids, extra_buf);
+ wpabuf_free(extra_buf);
+ if (buf == NULL)
+ return -1;
+
+ res = gas_query_req(wpa_s->gas, dst, freq, buf, anqp_resp_cb, wpa_s);
+ if (res < 0) {
+ wpa_msg(wpa_s, MSG_DEBUG, "ANQP: Failed to send Query Request");
+ wpabuf_free(buf);
+ ret = -1;
+ } else {
+ wpa_msg(wpa_s, MSG_DEBUG,
+ "ANQP: Query started with dialog token %u", res);
+ }
+
+ return ret;
+}
+
+
+static void anqp_add_extra(struct wpa_supplicant *wpa_s,
+ struct wpa_bss_anqp *anqp, u16 info_id,
+ const u8 *data, size_t slen)
+{
+ struct wpa_bss_anqp_elem *tmp, *elem = NULL;
+
+ if (!anqp)
+ return;
+
+ dl_list_for_each(tmp, &anqp->anqp_elems, struct wpa_bss_anqp_elem,
+ list) {
+ if (tmp->infoid == info_id) {
+ elem = tmp;
+ break;
+ }
+ }
+
+ if (!elem) {
+ elem = os_zalloc(sizeof(*elem));
+ if (!elem)
+ return;
+ elem->infoid = info_id;
+ dl_list_add(&anqp->anqp_elems, &elem->list);
+ } else {
+ wpabuf_free(elem->payload);
+ }
+
+ elem->payload = wpabuf_alloc_copy(data, slen);
+ if (!elem->payload) {
+ dl_list_del(&elem->list);
+ os_free(elem);
+ }
+}
+
+
+static void interworking_parse_rx_anqp_resp(struct wpa_supplicant *wpa_s,
+ struct wpa_bss *bss, const u8 *sa,
+ u16 info_id,
+ const u8 *data, size_t slen,
+ u8 dialog_token)
+{
+ const u8 *pos = data;
+ struct wpa_bss_anqp *anqp = NULL;
+#ifdef CONFIG_HS20
+ u8 type;
+#endif /* CONFIG_HS20 */
+
+ if (bss)
+ anqp = bss->anqp;
+
+ switch (info_id) {
+ case ANQP_CAPABILITY_LIST:
+ wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR
+ " ANQP Capability list", MAC2STR(sa));
+ wpa_hexdump_ascii(MSG_DEBUG, "ANQP: Capability list",
+ pos, slen);
+ if (anqp) {
+ wpabuf_free(anqp->capability_list);
+ anqp->capability_list = wpabuf_alloc_copy(pos, slen);
+ }
+ break;
+ case ANQP_VENUE_NAME:
+ wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR
+ " Venue Name", MAC2STR(sa));
+ wpa_hexdump_ascii(MSG_DEBUG, "ANQP: Venue Name", pos, slen);
+ if (anqp) {
+ wpabuf_free(anqp->venue_name);
+ anqp->venue_name = wpabuf_alloc_copy(pos, slen);
+ }
+ break;
+ case ANQP_NETWORK_AUTH_TYPE:
+ wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR
+ " Network Authentication Type information",
+ MAC2STR(sa));
+ wpa_hexdump_ascii(MSG_DEBUG, "ANQP: Network Authentication "
+ "Type", pos, slen);
+ if (anqp) {
+ wpabuf_free(anqp->network_auth_type);
+ anqp->network_auth_type = wpabuf_alloc_copy(pos, slen);
+ }
+ break;
+ case ANQP_ROAMING_CONSORTIUM:
+ wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR
+ " Roaming Consortium list", MAC2STR(sa));
+ wpa_hexdump_ascii(MSG_DEBUG, "ANQP: Roaming Consortium",
+ pos, slen);
+ if (anqp) {
+ wpabuf_free(anqp->roaming_consortium);
+ anqp->roaming_consortium = wpabuf_alloc_copy(pos, slen);
+ }
+ break;
+ case ANQP_IP_ADDR_TYPE_AVAILABILITY:
+ wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR
+ " IP Address Type Availability information",
+ MAC2STR(sa));
+ wpa_hexdump(MSG_MSGDUMP, "ANQP: IP Address Availability",
+ pos, slen);
+ if (anqp) {
+ wpabuf_free(anqp->ip_addr_type_availability);
+ anqp->ip_addr_type_availability =
+ wpabuf_alloc_copy(pos, slen);
+ }
+ break;
+ case ANQP_NAI_REALM:
+ wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR
+ " NAI Realm list", MAC2STR(sa));
+ wpa_hexdump_ascii(MSG_DEBUG, "ANQP: NAI Realm", pos, slen);
+ if (anqp) {
+ wpabuf_free(anqp->nai_realm);
+ anqp->nai_realm = wpabuf_alloc_copy(pos, slen);
+ }
+ break;
+ case ANQP_3GPP_CELLULAR_NETWORK:
+ wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR
+ " 3GPP Cellular Network information", MAC2STR(sa));
+ wpa_hexdump_ascii(MSG_DEBUG, "ANQP: 3GPP Cellular Network",
+ pos, slen);
+ if (anqp) {
+ wpabuf_free(anqp->anqp_3gpp);
+ anqp->anqp_3gpp = wpabuf_alloc_copy(pos, slen);
+ }
+ break;
+ case ANQP_DOMAIN_NAME:
+ wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR
+ " Domain Name list", MAC2STR(sa));
+ wpa_hexdump_ascii(MSG_MSGDUMP, "ANQP: Domain Name", pos, slen);
+ if (anqp) {
+ wpabuf_free(anqp->domain_name);
+ anqp->domain_name = wpabuf_alloc_copy(pos, slen);
+ }
+ break;
+ case ANQP_VENDOR_SPECIFIC:
+ if (slen < 3)
+ return;
+
+ switch (WPA_GET_BE24(pos)) {
+#ifdef CONFIG_HS20
+ case OUI_WFA:
+ pos += 3;
+ slen -= 3;
+
+ if (slen < 1)
+ return;
+ type = *pos++;
+ slen--;
+
+ switch (type) {
+ case HS20_ANQP_OUI_TYPE:
+ hs20_parse_rx_hs20_anqp_resp(wpa_s, bss, sa,
+ pos, slen,
+ dialog_token);
+ break;
+ default:
+ wpa_msg(wpa_s, MSG_DEBUG,
+ "HS20: Unsupported ANQP vendor type %u",
+ type);
+ break;
+ }
+ break;
+#endif /* CONFIG_HS20 */
+ default:
+ wpa_msg(wpa_s, MSG_DEBUG,
+ "Interworking: Unsupported vendor-specific ANQP OUI %06x",
+ WPA_GET_BE24(pos));
+ return;
+ }
+ break;
+ default:
+ wpa_msg(wpa_s, MSG_DEBUG,
+ "Interworking: Unsupported ANQP Info ID %u", info_id);
+ anqp_add_extra(wpa_s, anqp, info_id, data, slen);
+ break;
+ }
+}
+
+
+void anqp_resp_cb(void *ctx, const u8 *dst, u8 dialog_token,
+ enum gas_query_result result,
+ const struct wpabuf *adv_proto,
+ const struct wpabuf *resp, u16 status_code)
+{
+ struct wpa_supplicant *wpa_s = ctx;
+ const u8 *pos;
+ const u8 *end;
+ u16 info_id;
+ u16 slen;
+ struct wpa_bss *bss = NULL, *tmp;
+ const char *anqp_result = "SUCCESS";
+
+ wpa_printf(MSG_DEBUG, "Interworking: anqp_resp_cb dst=" MACSTR
+ " dialog_token=%u result=%d status_code=%u",
+ MAC2STR(dst), dialog_token, result, status_code);
+ if (result != GAS_QUERY_SUCCESS) {
+#ifdef CONFIG_HS20
+ if (wpa_s->fetch_osu_icon_in_progress)
+ hs20_icon_fetch_failed(wpa_s);
+#endif /* CONFIG_HS20 */
+ anqp_result = "FAILURE";
+ goto out;
+ }
+
+ pos = wpabuf_head(adv_proto);
+ if (wpabuf_len(adv_proto) < 4 || pos[0] != WLAN_EID_ADV_PROTO ||
+ pos[1] < 2 || pos[3] != ACCESS_NETWORK_QUERY_PROTOCOL) {
+ wpa_msg(wpa_s, MSG_DEBUG,
+ "ANQP: Unexpected Advertisement Protocol in response");
+#ifdef CONFIG_HS20
+ if (wpa_s->fetch_osu_icon_in_progress)
+ hs20_icon_fetch_failed(wpa_s);
+#endif /* CONFIG_HS20 */
+ anqp_result = "INVALID_FRAME";
+ goto out;
+ }
+
+ /*
+ * If possible, select the BSS entry based on which BSS entry was used
+ * for the request. This can help in cases where multiple BSS entries
+ * may exist for the same AP.
+ */
+ dl_list_for_each_reverse(tmp, &wpa_s->bss, struct wpa_bss, list) {
+ if (tmp == wpa_s->interworking_gas_bss &&
+ os_memcmp(tmp->bssid, dst, ETH_ALEN) == 0) {
+ bss = tmp;
+ break;
+ }
+ }
+ if (bss == NULL)
+ bss = wpa_bss_get_bssid(wpa_s, dst);
+
+ pos = wpabuf_head(resp);
+ end = pos + wpabuf_len(resp);
+
+ while (pos < end) {
+ unsigned int left = end - pos;
+
+ if (left < 4) {
+ wpa_msg(wpa_s, MSG_DEBUG, "ANQP: Invalid element");
+ anqp_result = "INVALID_FRAME";
+ goto out_parse_done;
+ }
+ info_id = WPA_GET_LE16(pos);
+ pos += 2;
+ slen = WPA_GET_LE16(pos);
+ pos += 2;
+ left -= 4;
+ if (left < slen) {
+ wpa_msg(wpa_s, MSG_DEBUG,
+ "ANQP: Invalid element length for Info ID %u",
+ info_id);
+ anqp_result = "INVALID_FRAME";
+ goto out_parse_done;
+ }
+ interworking_parse_rx_anqp_resp(wpa_s, bss, dst, info_id, pos,
+ slen, dialog_token);
+ pos += slen;
+ }
+
+out_parse_done:
+#ifdef CONFIG_HS20
+ hs20_notify_parse_done(wpa_s);
+#endif /* CONFIG_HS20 */
+out:
+ wpa_msg(wpa_s, MSG_INFO, ANQP_QUERY_DONE "addr=" MACSTR " result=%s",
+ MAC2STR(dst), anqp_result);
+}
+
+
+static void interworking_scan_res_handler(struct wpa_supplicant *wpa_s,
+ struct wpa_scan_results *scan_res)
+{
+ wpa_msg(wpa_s, MSG_DEBUG,
+ "Interworking: Scan results available - start ANQP fetch");
+ interworking_start_fetch_anqp(wpa_s);
+}
+
+
+int interworking_select(struct wpa_supplicant *wpa_s, int auto_select,
+ int *freqs)
+{
+ interworking_stop_fetch_anqp(wpa_s);
+ wpa_s->network_select = 1;
+ wpa_s->auto_network_select = 0;
+ wpa_s->auto_select = !!auto_select;
+ wpa_s->fetch_all_anqp = 0;
+ wpa_s->fetch_osu_info = 0;
+ wpa_msg(wpa_s, MSG_DEBUG,
+ "Interworking: Start scan for network selection");
+ wpa_s->scan_res_handler = interworking_scan_res_handler;
+ wpa_s->normal_scans = 0;
+ wpa_s->scan_req = MANUAL_SCAN_REQ;
+ os_free(wpa_s->manual_scan_freqs);
+ wpa_s->manual_scan_freqs = freqs;
+ wpa_s->after_wps = 0;
+ wpa_s->known_wps_freq = 0;
+ wpa_supplicant_req_scan(wpa_s, 0, 0);
+
+ return 0;
+}
+
+
+static void gas_resp_cb(void *ctx, const u8 *addr, u8 dialog_token,
+ enum gas_query_result result,
+ const struct wpabuf *adv_proto,
+ const struct wpabuf *resp, u16 status_code)
+{
+ struct wpa_supplicant *wpa_s = ctx;
+ struct wpabuf *n;
+
+ wpa_msg(wpa_s, MSG_INFO, GAS_RESPONSE_INFO "addr=" MACSTR
+ " dialog_token=%d status_code=%d resp_len=%d",
+ MAC2STR(addr), dialog_token, status_code,
+ resp ? (int) wpabuf_len(resp) : -1);
+ if (!resp)
+ return;
+
+ n = wpabuf_dup(resp);
+ if (n == NULL)
+ return;
+ wpabuf_free(wpa_s->prev_gas_resp);
+ wpa_s->prev_gas_resp = wpa_s->last_gas_resp;
+ os_memcpy(wpa_s->prev_gas_addr, wpa_s->last_gas_addr, ETH_ALEN);
+ wpa_s->prev_gas_dialog_token = wpa_s->last_gas_dialog_token;
+ wpa_s->last_gas_resp = n;
+ os_memcpy(wpa_s->last_gas_addr, addr, ETH_ALEN);
+ wpa_s->last_gas_dialog_token = dialog_token;
+}
+
+
+int gas_send_request(struct wpa_supplicant *wpa_s, const u8 *dst,
+ const struct wpabuf *adv_proto,
+ const struct wpabuf *query)
+{
+ struct wpabuf *buf;
+ int ret = 0;
+ int freq;
+ struct wpa_bss *bss;
+ int res;
+ size_t len;
+ u8 query_resp_len_limit = 0;
+
+ freq = wpa_s->assoc_freq;
+ bss = wpa_bss_get_bssid(wpa_s, dst);
+ if (bss)
+ freq = bss->freq;
+ if (freq <= 0)
+ return -1;
+
+ wpa_msg(wpa_s, MSG_DEBUG, "GAS request to " MACSTR " (freq %d MHz)",
+ MAC2STR(dst), freq);
+ wpa_hexdump_buf(MSG_DEBUG, "Advertisement Protocol ID", adv_proto);
+ wpa_hexdump_buf(MSG_DEBUG, "GAS Query", query);
+
+ len = 3 + wpabuf_len(adv_proto) + 2;
+ if (query)
+ len += wpabuf_len(query);
+ buf = gas_build_initial_req(0, len);
+ if (buf == NULL)
+ return -1;
+
+ /* Advertisement Protocol IE */
+ wpabuf_put_u8(buf, WLAN_EID_ADV_PROTO);
+ wpabuf_put_u8(buf, 1 + wpabuf_len(adv_proto)); /* Length */
+ wpabuf_put_u8(buf, query_resp_len_limit & 0x7f);
+ wpabuf_put_buf(buf, adv_proto);
+
+ /* GAS Query */
+ if (query) {
+ wpabuf_put_le16(buf, wpabuf_len(query));
+ wpabuf_put_buf(buf, query);
+ } else
+ wpabuf_put_le16(buf, 0);
+
+ res = gas_query_req(wpa_s->gas, dst, freq, buf, gas_resp_cb, wpa_s);
+ if (res < 0) {
+ wpa_msg(wpa_s, MSG_DEBUG, "GAS: Failed to send Query Request");
+ wpabuf_free(buf);
+ ret = -1;
+ } else
+ wpa_msg(wpa_s, MSG_DEBUG,
+ "GAS: Query started with dialog token %u", res);
+
+ return ret;
+}
projects / mech_eap.git / blobdiff