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-rw-r--r--wpa_supplicant/interworking.c2107
1 files changed, 2107 insertions, 0 deletions
diff --git a/wpa_supplicant/interworking.c b/wpa_supplicant/interworking.c
new file mode 100644
index 0000000000000..b8a8bb2b6ffdd
--- /dev/null
+++ b/wpa_supplicant/interworking.c
@@ -0,0 +1,2107 @@
+/*
+ * Interworking (IEEE 802.11u)
+ * Copyright (c) 2011-2012, Qualcomm Atheros, Inc.
+ *
+ * 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 "wpa_supplicant_i.h"
+#include "config.h"
+#include "config_ssid.h"
+#include "bss.h"
+#include "scan.h"
+#include "notify.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 void interworking_reconnect(struct wpa_supplicant *wpa_s)
+{
+ if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
+ wpa_supplicant_cancel_sched_scan(wpa_s);
+ wpa_supplicant_deauthenticate(wpa_s,
+ WLAN_REASON_DEAUTH_LEAVING);
+ }
+ wpa_s->disconnected = 0;
+ wpa_s->reassociate = 1;
+
+ if (wpa_s->last_scan_res_used > 0) {
+ struct os_time now;
+ os_get_time(&now);
+ if (now.sec - wpa_s->last_scan.sec <= 5) {
+ wpa_printf(MSG_DEBUG, "Interworking: Old scan results "
+ "are fresh - connect without new scan");
+ if (wpas_select_network_from_last_scan(wpa_s) >= 0)
+ return;
+ }
+ }
+
+ 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;
+
+ 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;
+ }
+ 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)
+ return 1;
+ }
+ return 0;
+}
+
+
+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_printf(MSG_DEBUG, "Interworking: ANQP Query Request to " MACSTR,
+ MAC2STR(bss->bssid));
+
+ 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;
+ 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);
+ wpabuf_put_u8(extra, HS20_STYPE_WAN_METRICS);
+ wpabuf_put_u8(extra, HS20_STYPE_CONNECTION_CAPABILITY);
+ wpabuf_put_u8(extra, HS20_STYPE_OPERATING_CLASS);
+ }
+ 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_printf(MSG_DEBUG, "ANQP: Failed to send Query Request");
+ ret = -1;
+ eloop_register_timeout(0, 0, interworking_continue_anqp, wpa_s,
+ NULL);
+ } else
+ wpa_printf(MSG_DEBUG, "ANQP: Query started with dialog token "
+ "%u", res);
+
+ wpabuf_free(buf);
+ 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 (pos + 3 > end) {
+ wpa_printf(MSG_DEBUG, "No room for EAP Method fixed fields");
+ return NULL;
+ }
+
+ elen = *pos++;
+ if (pos + elen > end || 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 (pos + 2 > end || pos + 2 + pos[1] > end) {
+ wpa_printf(MSG_DEBUG, "No room for Authentication "
+ "Parameter subfield");
+ return NULL;
+ }
+
+ id = *pos++;
+ len = *pos++;
+
+ 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 (pos + len > end || 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 (pos + realm_len > f_end) {
+ 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 = os_malloc(realm_len + 1);
+ if (r->realm == NULL)
+ return NULL;
+ os_memcpy(r->realm, pos, realm_len);
+ r->realm[realm_len] = '\0';
+ pos += realm_len;
+
+ if (pos + 1 > f_end) {
+ 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 (pos + r->eap_count * 3 > f_end) {
+ 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;
+
+ if (anqp == NULL || wpabuf_len(anqp) < 2)
+ return NULL;
+
+ pos = wpabuf_head_u8(anqp);
+ end = pos + wpabuf_len(anqp);
+ num = WPA_GET_LE16(pos);
+ wpa_printf(MSG_DEBUG, "NAI Realm Count: %u", num);
+ pos += 2;
+
+ if (num * 5 > end - pos) {
+ wpa_printf(MSG_DEBUG, "Invalid NAI Realm Count %u - not "
+ "enough data (%u octets) for that many realms",
+ num, (unsigned int) (end - pos));
+ 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 nai_realm_eap *eap)
+{
+ if (eap_get_name(EAP_VENDOR_IETF, eap->method) == NULL)
+ return 0; /* method not supported */
+
+ if (eap->method != EAP_TYPE_TTLS && eap->method != EAP_TYPE_PEAP) {
+ /* Only tunneled methods with username/password supported */
+ return 0;
+ }
+
+ if (eap->method == EAP_TYPE_PEAP) {
+ if (eap->inner_method &&
+ eap_get_name(EAP_VENDOR_IETF, eap->inner_method) == NULL)
+ return 0;
+ if (!eap->inner_method &&
+ eap_get_name(EAP_VENDOR_IETF, EAP_TYPE_MSCHAPV2) == NULL)
+ 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)
+ 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)
+ return 0;
+ }
+
+ if (eap->inner_method &&
+ eap->inner_method != EAP_TYPE_GTC &&
+ eap->inner_method != EAP_TYPE_MSCHAPV2)
+ return 0;
+
+ return 1;
+}
+
+
+static int nai_realm_cred_cert(struct nai_realm_eap *eap)
+{
+ if (eap_get_name(EAP_VENDOR_IETF, eap->method) == NULL)
+ return 0; /* method not supported */
+
+ if (eap->method != EAP_TYPE_TLS) {
+ /* Only EAP-TLS supported for credential authentication */
+ return 0;
+ }
+
+ return 1;
+}
+
+
+static struct nai_realm_eap * nai_realm_find_eap(struct wpa_cred *cred,
+ struct nai_realm *realm)
+{
+ u8 e;
+
+ if (cred == NULL ||
+ cred->username == NULL ||
+ cred->username[0] == '\0' ||
+ ((cred->password == NULL ||
+ cred->password[0] == '\0') &&
+ (cred->private_key == NULL ||
+ cred->private_key[0] == '\0')))
+ 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(eap))
+ return eap;
+ if (cred->private_key && cred->private_key[0] &&
+ nai_realm_cred_cert(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];
+ const u8 *pos, *end;
+ u8 udhl;
+
+ /* See Annex A of 3GPP TS 24.234 v8.1.0 for description */
+ plmn[0] = (imsi[0] - '0') | ((imsi[1] - '0') << 4);
+ plmn[1] = imsi[2] - '0';
+ /* default to MNC length 3 if unknown */
+ if (mnc_len != 2)
+ plmn[1] |= (imsi[5] - '0') << 4;
+ else
+ plmn[1] |= 0xf0;
+ plmn[2] = (imsi[3] - '0') | ((imsi[4] - '0') << 4);
+
+ if (anqp == NULL)
+ return 0;
+ pos = wpabuf_head_u8(anqp);
+ end = pos + wpabuf_len(anqp);
+ if (pos + 2 > end)
+ return 0;
+ if (*pos != 0) {
+ wpa_printf(MSG_DEBUG, "Unsupported GUD version 0x%x", *pos);
+ return 0;
+ }
+ pos++;
+ udhl = *pos++;
+ if (pos + udhl > end) {
+ wpa_printf(MSG_DEBUG, "Invalid UDHL");
+ return 0;
+ }
+ end = pos + udhl;
+
+ while (pos + 2 <= end) {
+ u8 iei, len;
+ const u8 *l_end;
+ iei = *pos++;
+ len = *pos++ & 0x7f;
+ if (pos + len > end)
+ break;
+ l_end = pos + len;
+
+ if (iei == 0 && len > 0) {
+ /* PLMN List */
+ u8 num, i;
+ num = *pos++;
+ for (i = 0; i < num; i++) {
+ if (pos + 3 > end)
+ break;
+ if (os_memcmp(pos, plmn, 3) == 0)
+ return 1; /* Found matching PLMN */
+ pos += 3;
+ }
+ }
+
+ 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];
+ }
+ pos += 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 interworking_set_hs20_params(struct wpa_supplicant *wpa_s,
+ struct wpa_ssid *ssid)
+{
+ if (wpa_config_set(ssid, "key_mgmt",
+ wpa_s->conf->pmf != NO_MGMT_FRAME_PROTECTION ?
+ "WPA-EAP WPA-EAP-SHA256" : "WPA-EAP", 0) < 0)
+ return -1;
+ if (wpa_config_set(ssid, "proto", "RSN", 0) < 0)
+ return -1;
+ if (wpa_config_set(ssid, "pairwise", "CCMP", 0) < 0)
+ return -1;
+ return 0;
+}
+
+
+static int interworking_connect_3gpp(struct wpa_supplicant *wpa_s,
+ struct wpa_bss *bss)
+{
+#ifdef INTERWORKING_3GPP
+ struct wpa_cred *cred;
+ struct wpa_ssid *ssid;
+ const u8 *ie;
+ int eap_type;
+ int res;
+ char prefix;
+
+ if (bss->anqp == NULL || bss->anqp->anqp_3gpp == NULL)
+ return -1;
+
+ for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
+ char *sep;
+ const char *imsi;
+ int mnc_len;
+
+#ifdef PCSC_FUNCS
+ if (cred->pcsc && wpa_s->conf->pcsc_reader && wpa_s->scard &&
+ wpa_s->imsi[0]) {
+ imsi = wpa_s->imsi;
+ mnc_len = wpa_s->mnc_len;
+ goto compare;
+ }
+#endif /* PCSC_FUNCS */
+
+ if (cred->imsi == NULL || !cred->imsi[0] ||
+ 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;
+ imsi = cred->imsi;
+
+#ifdef PCSC_FUNCS
+ compare:
+#endif /* PCSC_FUNCS */
+ if (plmn_id_match(bss->anqp->anqp_3gpp, imsi, mnc_len))
+ break;
+ }
+ if (cred == NULL)
+ return -1;
+
+ ie = wpa_bss_get_ie(bss, WLAN_EID_SSID);
+ if (ie == NULL)
+ return -1;
+ wpa_printf(MSG_DEBUG, "Interworking: Connect with " MACSTR " (3GPP)",
+ MAC2STR(bss->bssid));
+
+ 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(ie[1] + 1);
+ if (ssid->ssid == NULL)
+ goto fail;
+ os_memcpy(ssid->ssid, ie + 2, ie[1]);
+ ssid->ssid_len = ie[1];
+
+ 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_printf(MSG_DEBUG, "Selected EAP method (%d) not supported",
+ eap_type);
+ goto fail;
+ }
+
+ if (!cred->pcsc && set_root_nai(ssid, cred->imsi, prefix) < 0) {
+ wpa_printf(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;
+ }
+
+ if (cred->password && cred->password[0] &&
+ wpa_config_set_quoted(ssid, "password", cred->password) < 0)
+ goto fail;
+
+ wpa_config_update_prio_list(wpa_s->conf);
+ interworking_reconnect(wpa_s);
+
+ return 0;
+
+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 (pos + 2 > end)
+ return 0;
+
+ pos++; /* skip Number of ANQP OIs */
+ lens = *pos++;
+ if (pos + (lens & 0x0f) + (lens >> 4) > end)
+ 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 (pos + len > end)
+ 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_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 struct wpa_cred * interworking_credentials_available_roaming_consortium(
+ struct wpa_supplicant *wpa_s, struct wpa_bss *bss)
+{
+ struct wpa_cred *cred, *selected = NULL;
+ const u8 *ie;
+
+ 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_excluded_ssid(cred, bss))
+ continue;
+
+ if (selected == NULL ||
+ selected->priority < cred->priority)
+ selected = cred;
+ }
+
+ 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 (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;
+
+ return 0;
+}
+
+
+static int interworking_connect_roaming_consortium(
+ struct wpa_supplicant *wpa_s, struct wpa_cred *cred,
+ struct wpa_bss *bss, const u8 *ssid_ie)
+{
+ struct wpa_ssid *ssid;
+
+ wpa_printf(MSG_DEBUG, "Interworking: Connect with " MACSTR " based on "
+ "roaming consortium match", MAC2STR(bss->bssid));
+
+ 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(ssid_ie[1] + 1);
+ if (ssid->ssid == NULL)
+ goto fail;
+ os_memcpy(ssid->ssid, ssid_ie + 2, ssid_ie[1]);
+ ssid->ssid_len = ssid_ie[1];
+
+ if (interworking_set_hs20_params(wpa_s, ssid) < 0)
+ goto fail;
+
+ if (cred->eap_method == NULL) {
+ wpa_printf(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_config_update_prio_list(wpa_s->conf);
+ interworking_reconnect(wpa_s);
+
+ return 0;
+
+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)
+{
+ struct wpa_cred *cred;
+ struct wpa_ssid *ssid;
+ struct nai_realm *realm;
+ struct nai_realm_eap *eap = NULL;
+ u16 count, i;
+ char buf[100];
+ const u8 *ie;
+
+ if (wpa_s->conf->cred == NULL || bss == NULL)
+ return -1;
+ ie = wpa_bss_get_ie(bss, WLAN_EID_SSID);
+ if (ie == NULL || ie[1] == 0) {
+ wpa_printf(MSG_DEBUG, "Interworking: No SSID known for "
+ MACSTR, MAC2STR(bss->bssid));
+ return -1;
+ }
+
+ 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_printf(MSG_DEBUG, "Interworking: Network does not use "
+ "RSN");
+ return -1;
+ }
+
+ cred = interworking_credentials_available_roaming_consortium(wpa_s,
+ bss);
+ if (cred)
+ return interworking_connect_roaming_consortium(wpa_s, cred,
+ bss, ie);
+
+ realm = nai_realm_parse(bss->anqp ? bss->anqp->nai_realm : NULL,
+ &count);
+ if (realm == NULL) {
+ wpa_printf(MSG_DEBUG, "Interworking: Could not parse NAI "
+ "Realm list from " MACSTR, MAC2STR(bss->bssid));
+ count = 0;
+ }
+
+ for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
+ for (i = 0; i < count; i++) {
+ if (!nai_realm_match(&realm[i], cred->realm))
+ continue;
+ eap = nai_realm_find_eap(cred, &realm[i]);
+ if (eap)
+ break;
+ }
+ if (eap)
+ break;
+ }
+
+ if (!eap) {
+ if (interworking_connect_3gpp(wpa_s, bss) == 0) {
+ if (realm)
+ nai_realm_free(realm, count);
+ return 0;
+ }
+
+ wpa_printf(MSG_DEBUG, "Interworking: No matching credentials "
+ "and EAP method found for " MACSTR,
+ MAC2STR(bss->bssid));
+ nai_realm_free(realm, count);
+ return -1;
+ }
+
+ wpa_printf(MSG_DEBUG, "Interworking: Connect with " MACSTR,
+ MAC2STR(bss->bssid));
+
+ 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(ie[1] + 1);
+ if (ssid->ssid == NULL)
+ goto fail;
+ os_memcpy(ssid->ssid, ie + 2, ie[1]);
+ ssid->ssid_len = ie[1];
+
+ 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:
+ os_snprintf(buf, sizeof(buf), "\"auth=%s\"",
+ eap_get_name(EAP_VENDOR_IETF,
+ eap->inner_method ?
+ eap->inner_method :
+ EAP_TYPE_MSCHAPV2));
+ 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_config_update_prio_list(wpa_s->conf);
+ interworking_reconnect(wpa_s);
+
+ return 0;
+
+fail:
+ wpas_notify_network_removed(wpa_s, ssid);
+ wpa_config_remove_network(wpa_s->conf, ssid->id);
+ nai_realm_free(realm, count);
+ return -1;
+}
+
+
+static struct wpa_cred * interworking_credentials_available_3gpp(
+ struct wpa_supplicant *wpa_s, struct wpa_bss *bss)
+{
+ struct wpa_cred *cred, *selected = NULL;
+ int ret;
+
+#ifdef INTERWORKING_3GPP
+ if (bss->anqp == NULL || bss->anqp->anqp_3gpp == NULL)
+ return NULL;
+
+ for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
+ char *sep;
+ const char *imsi;
+ int mnc_len;
+
+#ifdef PCSC_FUNCS
+ if (cred->pcsc && wpa_s->conf->pcsc_reader && wpa_s->scard &&
+ wpa_s->imsi[0]) {
+ imsi = wpa_s->imsi;
+ mnc_len = wpa_s->mnc_len;
+ goto compare;
+ }
+#endif /* PCSC_FUNCS */
+
+ if (cred->imsi == NULL || !cred->imsi[0] ||
+ 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;
+ imsi = cred->imsi;
+
+#ifdef PCSC_FUNCS
+ compare:
+#endif /* PCSC_FUNCS */
+ wpa_printf(MSG_DEBUG, "Interworking: Parsing 3GPP info from "
+ MACSTR, MAC2STR(bss->bssid));
+ ret = plmn_id_match(bss->anqp->anqp_3gpp, imsi, mnc_len);
+ wpa_printf(MSG_DEBUG, "PLMN match %sfound", ret ? "" : "not ");
+ if (ret) {
+ if (cred_excluded_ssid(cred, bss))
+ continue;
+ if (selected == NULL ||
+ selected->priority < cred->priority)
+ selected = cred;
+ }
+ }
+#endif /* INTERWORKING_3GPP */
+ return selected;
+}
+
+
+static struct wpa_cred * interworking_credentials_available_realm(
+ struct wpa_supplicant *wpa_s, struct wpa_bss *bss)
+{
+ struct wpa_cred *cred, *selected = NULL;
+ struct nai_realm *realm;
+ u16 count, i;
+
+ if (bss->anqp == NULL || bss->anqp->nai_realm == NULL)
+ return NULL;
+
+ if (wpa_s->conf->cred == NULL)
+ return NULL;
+
+ wpa_printf(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_printf(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(cred, &realm[i])) {
+ if (cred_excluded_ssid(cred, bss))
+ continue;
+ if (selected == NULL ||
+ selected->priority < cred->priority)
+ selected = cred;
+ break;
+ }
+ }
+ }
+
+ nai_realm_free(realm, count);
+
+ return selected;
+}
+
+
+static struct wpa_cred * interworking_credentials_available(
+ struct wpa_supplicant *wpa_s, struct wpa_bss *bss)
+{
+ struct wpa_cred *cred, *cred2;
+
+ cred = interworking_credentials_available_realm(wpa_s, bss);
+ cred2 = interworking_credentials_available_3gpp(wpa_s, bss);
+ if (cred && cred2 && cred2->priority >= cred->priority)
+ cred = cred2;
+ if (!cred)
+ cred = cred2;
+
+ cred2 = interworking_credentials_available_roaming_consortium(wpa_s,
+ bss);
+ if (cred && cred2 && cred2->priority >= cred->priority)
+ cred = cred2;
+ if (!cred)
+ cred = cred2;
+
+ return cred;
+}
+
+
+static int domain_name_list_contains(struct wpabuf *domain_names,
+ const char *domain)
+{
+ const u8 *pos, *end;
+ size_t len;
+
+ len = os_strlen(domain);
+ pos = wpabuf_head(domain_names);
+ end = pos + wpabuf_len(domain_names);
+
+ while (pos + 1 < end) {
+ if (pos + 1 + pos[0] > end)
+ break;
+
+ wpa_hexdump_ascii(MSG_DEBUG, "Interworking: AP domain name",
+ pos + 1, pos[0]);
+ if (pos[0] == len &&
+ os_strncasecmp(domain, (const char *) (pos + 1), len) == 0)
+ return 1;
+
+ pos += 1 + pos[0];
+ }
+
+ return 0;
+}
+
+
+int interworking_home_sp_cred(struct wpa_supplicant *wpa_s,
+ struct wpa_cred *cred,
+ struct wpabuf *domain_names)
+{
+#ifdef INTERWORKING_3GPP
+ char nai[100], *realm;
+
+ char *imsi = NULL;
+ int mnc_len = 0;
+ if (cred->imsi)
+ imsi = cred->imsi;
+#ifdef CONFIG_PCSC
+ else if (cred->pcsc && wpa_s->conf->pcsc_reader &&
+ wpa_s->scard && wpa_s->imsi[0]) {
+ imsi = wpa_s->imsi;
+ mnc_len = wpa_s->mnc_len;
+ }
+#endif /* CONFIG_PCSC */
+ if (domain_names &&
+ imsi && build_root_nai(nai, sizeof(nai), imsi, mnc_len, 0) == 0) {
+ realm = os_strchr(nai, '@');
+ if (realm)
+ realm++;
+ wpa_printf(MSG_DEBUG, "Interworking: Search for match "
+ "with SIM/USIM domain %s", realm);
+ if (realm &&
+ domain_name_list_contains(domain_names, realm))
+ return 1;
+ }
+#endif /* INTERWORKING_3GPP */
+
+ if (domain_names == NULL || cred->domain == NULL)
+ return 0;
+
+ wpa_printf(MSG_DEBUG, "Interworking: Search for match with "
+ "home SP FQDN %s", cred->domain);
+ if (domain_name_list_contains(domain_names, cred->domain))
+ 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 void interworking_select_network(struct wpa_supplicant *wpa_s)
+{
+ struct wpa_bss *bss, *selected = NULL, *selected_home = NULL;
+ int selected_prio = -999999, selected_home_prio = -999999;
+ unsigned int count = 0;
+ const char *type;
+ int res;
+ struct wpa_cred *cred;
+
+ wpa_s->network_select = 0;
+
+ dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
+ cred = interworking_credentials_available(wpa_s, bss);
+ 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_printf(MSG_DEBUG, "Interworking: Credential match "
+ "with " MACSTR " but network does not use "
+ "RSN", MAC2STR(bss->bssid));
+ continue;
+ }
+ 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";
+ wpa_msg(wpa_s, MSG_INFO, INTERWORKING_AP MACSTR " type=%s",
+ MAC2STR(bss->bssid), type);
+ if (wpa_s->auto_select ||
+ (wpa_s->conf->auto_interworking &&
+ wpa_s->auto_network_select)) {
+ if (selected == NULL ||
+ cred->priority > selected_prio) {
+ selected = bss;
+ selected_prio = cred->priority;
+ }
+ if (res > 0 &&
+ (selected_home == NULL ||
+ cred->priority > selected_home_prio)) {
+ selected_home = bss;
+ selected_home_prio = cred->priority;
+ }
+ }
+ }
+
+ if (selected_home && selected_home != selected &&
+ selected_home_prio >= selected_prio) {
+ /* Prefer network operated by the Home SP */
+ selected = selected_home;
+ }
+
+ 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_printf(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_printf(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 (selected)
+ interworking_connect(wpa_s, selected);
+}
+
+
+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_printf(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;
+
+ if (eloop_terminated() || !wpa_s->fetch_anqp_in_progress)
+ return;
+
+ 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 (!(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) {
+ 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;
+ interworking_next_anqp_fetch(wpa_s);
+}
+
+
+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;
+
+ 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)
+{
+ struct wpabuf *buf;
+ int ret = 0;
+ int freq;
+ struct wpa_bss *bss;
+ int res;
+
+ freq = wpa_s->assoc_freq;
+ bss = wpa_bss_get_bssid(wpa_s, dst);
+ if (bss) {
+ wpa_bss_anqp_unshare_alloc(bss);
+ freq = bss->freq;
+ }
+ if (freq <= 0)
+ return -1;
+
+ wpa_printf(MSG_DEBUG, "ANQP: Query Request to " MACSTR " for %u id(s)",
+ MAC2STR(dst), (unsigned int) num_ids);
+
+ buf = anqp_build_req(info_ids, num_ids, NULL);
+ if (buf == NULL)
+ return -1;
+
+ res = gas_query_req(wpa_s->gas, dst, freq, buf, anqp_resp_cb, wpa_s);
+ if (res < 0) {
+ wpa_printf(MSG_DEBUG, "ANQP: Failed to send Query Request");
+ ret = -1;
+ } else
+ wpa_printf(MSG_DEBUG, "ANQP: Query started with dialog token "
+ "%u", res);
+
+ wpabuf_free(buf);
+ return ret;
+}
+
+
+static void interworking_parse_rx_anqp_resp(struct wpa_supplicant *wpa_s,
+ const u8 *sa, u16 info_id,
+ const u8 *data, size_t slen)
+{
+ const u8 *pos = data;
+ struct wpa_bss *bss = wpa_bss_get_bssid(wpa_s, sa);
+ 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));
+ 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, sa, pos,
+ slen);
+ break;
+ default:
+ wpa_printf(MSG_DEBUG, "HS20: Unsupported ANQP "
+ "vendor type %u", type);
+ break;
+ }
+ break;
+#endif /* CONFIG_HS20 */
+ default:
+ wpa_printf(MSG_DEBUG, "Interworking: Unsupported "
+ "vendor-specific ANQP OUI %06x",
+ WPA_GET_BE24(pos));
+ return;
+ }
+ break;
+ default:
+ wpa_printf(MSG_DEBUG, "Interworking: Unsupported ANQP Info ID "
+ "%u", info_id);
+ 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;
+
+ if (result != GAS_QUERY_SUCCESS)
+ return;
+
+ 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_printf(MSG_DEBUG, "ANQP: Unexpected Advertisement "
+ "Protocol in response");
+ return;
+ }
+
+ pos = wpabuf_head(resp);
+ end = pos + wpabuf_len(resp);
+
+ while (pos < end) {
+ if (pos + 4 > end) {
+ wpa_printf(MSG_DEBUG, "ANQP: Invalid element");
+ break;
+ }
+ info_id = WPA_GET_LE16(pos);
+ pos += 2;
+ slen = WPA_GET_LE16(pos);
+ pos += 2;
+ if (pos + slen > end) {
+ wpa_printf(MSG_DEBUG, "ANQP: Invalid element length "
+ "for Info ID %u", info_id);
+ break;
+ }
+ interworking_parse_rx_anqp_resp(wpa_s, dst, info_id, pos,
+ slen);
+ pos += slen;
+ }
+}
+
+
+static void interworking_scan_res_handler(struct wpa_supplicant *wpa_s,
+ struct wpa_scan_results *scan_res)
+{
+ wpa_printf(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)
+{
+ 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_printf(MSG_DEBUG, "Interworking: Start scan for network "
+ "selection");
+ wpa_s->scan_res_handler = interworking_scan_res_handler;
+ wpa_s->scan_req = MANUAL_SCAN_REQ;
+ 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;
+
+ 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;
+
+ wpabuf_free(wpa_s->last_gas_resp);
+ wpa_s->last_gas_resp = wpabuf_dup(resp);
+ if (wpa_s->last_gas_resp == NULL)
+ return;
+ 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, pame_bi = 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_printf(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) |
+ (pame_bi ? 0x80 : 0));
+ 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_printf(MSG_DEBUG, "GAS: Failed to send Query Request");
+ ret = -1;
+ } else
+ wpa_printf(MSG_DEBUG, "GAS: Query started with dialog token "
+ "%u", res);
+
+ wpabuf_free(buf);
+ return ret;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2025-06-27 00:03:21 +0000