mirror of
https://github.com/vanhoefm/fragattacks.git
synced 2024-11-29 02:38:22 -05:00
3b840b6748
New configuration parameters home_imsi and home_milenage can be used to configure SIM/USIM simulator parameters for network selection based on SIM/USIM credentials. home_imsi=(MCC | MNC | '-' | rest of IMSI) home_milenage=(Ki):(OPc):(SQN) For example: home_imsi=310026-000000000 home_milenage=90dca4eda45b53cf0f12d7c9c3bc6a89:cb9cccc4b9258e6dca4760379fb82581:000000000123
1137 lines
26 KiB
C
1137 lines
26 KiB
C
/*
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* Interworking (IEEE 802.11u)
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* Copyright (c) 2011, Qualcomm Atheros
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* Alternatively, this software may be distributed under the terms of BSD
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* license.
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*
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* See README and COPYING for more details.
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*/
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#include "includes.h"
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#include "common.h"
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#include "common/ieee802_11_defs.h"
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#include "common/gas.h"
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#include "common/wpa_ctrl.h"
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#include "drivers/driver.h"
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#include "eap_common/eap_defs.h"
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#include "eap_peer/eap_methods.h"
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#include "wpa_supplicant_i.h"
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#include "config.h"
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#include "bss.h"
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#include "scan.h"
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#include "notify.h"
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#include "gas_query.h"
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#include "interworking.h"
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#if defined(EAP_SIM) | defined(EAP_SIM_DYNAMIC)
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#define INTERWORKING_3GPP
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#else
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#if defined(EAP_AKA) | defined(EAP_AKA_DYNAMIC)
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#define INTERWORKING_3GPP
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#else
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#if defined(EAP_AKA_PRIME) | defined(EAP_AKA_PRIME_DYNAMIC)
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#define INTERWORKING_3GPP
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#endif
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#endif
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#endif
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static void interworking_next_anqp_fetch(struct wpa_supplicant *wpa_s);
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static struct wpabuf * anqp_build_req(u16 info_ids[], size_t num_ids,
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struct wpabuf *extra)
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{
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struct wpabuf *buf;
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size_t i;
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u8 *len_pos;
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buf = gas_anqp_build_initial_req(0, 4 + num_ids * 2 +
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(extra ? wpabuf_len(extra) : 0));
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if (buf == NULL)
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return NULL;
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len_pos = gas_anqp_add_element(buf, ANQP_QUERY_LIST);
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for (i = 0; i < num_ids; i++)
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wpabuf_put_le16(buf, info_ids[i]);
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gas_anqp_set_element_len(buf, len_pos);
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if (extra)
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wpabuf_put_buf(buf, extra);
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gas_anqp_set_len(buf);
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return buf;
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}
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static void interworking_anqp_resp_cb(void *ctx, const u8 *dst,
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u8 dialog_token,
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enum gas_query_result result,
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const struct wpabuf *adv_proto,
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const struct wpabuf *resp,
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u16 status_code)
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{
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struct wpa_supplicant *wpa_s = ctx;
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anqp_resp_cb(wpa_s, dst, dialog_token, result, adv_proto, resp,
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status_code);
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interworking_next_anqp_fetch(wpa_s);
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}
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static int interworking_anqp_send_req(struct wpa_supplicant *wpa_s,
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struct wpa_bss *bss)
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{
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struct wpabuf *buf;
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int ret = 0;
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int res;
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u16 info_ids[] = {
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ANQP_CAPABILITY_LIST,
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ANQP_VENUE_NAME,
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ANQP_NETWORK_AUTH_TYPE,
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ANQP_ROAMING_CONSORTIUM,
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ANQP_IP_ADDR_TYPE_AVAILABILITY,
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ANQP_NAI_REALM,
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ANQP_3GPP_CELLULAR_NETWORK,
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ANQP_DOMAIN_NAME
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};
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struct wpabuf *extra = NULL;
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wpa_printf(MSG_DEBUG, "Interworking: ANQP Query Request to " MACSTR,
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MAC2STR(bss->bssid));
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buf = anqp_build_req(info_ids, sizeof(info_ids) / sizeof(info_ids[0]),
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extra);
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wpabuf_free(extra);
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if (buf == NULL)
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return -1;
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res = gas_query_req(wpa_s->gas, bss->bssid, bss->freq, buf,
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interworking_anqp_resp_cb, wpa_s);
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if (res < 0) {
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wpa_printf(MSG_DEBUG, "ANQP: Failed to send Query Request");
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ret = -1;
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} else
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wpa_printf(MSG_DEBUG, "ANQP: Query started with dialog token "
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"%u", res);
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wpabuf_free(buf);
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return ret;
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}
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struct nai_realm_eap {
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u8 method;
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u8 inner_method;
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enum nai_realm_eap_auth_inner_non_eap inner_non_eap;
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u8 cred_type;
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u8 tunneled_cred_type;
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};
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struct nai_realm {
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u8 encoding;
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char *realm;
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u8 eap_count;
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struct nai_realm_eap *eap;
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};
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static void nai_realm_free(struct nai_realm *realms, u16 count)
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{
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u16 i;
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if (realms == NULL)
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return;
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for (i = 0; i < count; i++) {
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os_free(realms[i].eap);
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os_free(realms[i].realm);
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}
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os_free(realms);
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}
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static const u8 * nai_realm_parse_eap(struct nai_realm_eap *e, const u8 *pos,
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const u8 *end)
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{
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u8 elen, auth_count, a;
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const u8 *e_end;
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if (pos + 3 > end) {
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wpa_printf(MSG_DEBUG, "No room for EAP Method fixed fields");
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return NULL;
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}
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elen = *pos++;
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if (pos + elen > end || elen < 2) {
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wpa_printf(MSG_DEBUG, "No room for EAP Method subfield");
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return NULL;
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}
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e_end = pos + elen;
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e->method = *pos++;
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auth_count = *pos++;
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wpa_printf(MSG_DEBUG, "EAP Method: len=%u method=%u auth_count=%u",
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elen, e->method, auth_count);
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for (a = 0; a < auth_count; a++) {
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u8 id, len;
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if (pos + 2 > end || pos + 2 + pos[1] > end) {
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wpa_printf(MSG_DEBUG, "No room for Authentication "
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"Parameter subfield");
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return NULL;
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}
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id = *pos++;
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len = *pos++;
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switch (id) {
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case NAI_REALM_EAP_AUTH_NON_EAP_INNER_AUTH:
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if (len < 1)
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break;
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e->inner_non_eap = *pos;
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if (e->method != EAP_TYPE_TTLS)
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break;
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switch (*pos) {
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case NAI_REALM_INNER_NON_EAP_PAP:
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wpa_printf(MSG_DEBUG, "EAP-TTLS/PAP");
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break;
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case NAI_REALM_INNER_NON_EAP_CHAP:
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wpa_printf(MSG_DEBUG, "EAP-TTLS/CHAP");
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break;
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case NAI_REALM_INNER_NON_EAP_MSCHAP:
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wpa_printf(MSG_DEBUG, "EAP-TTLS/MSCHAP");
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break;
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case NAI_REALM_INNER_NON_EAP_MSCHAPV2:
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wpa_printf(MSG_DEBUG, "EAP-TTLS/MSCHAPV2");
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break;
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}
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break;
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case NAI_REALM_EAP_AUTH_INNER_AUTH_EAP_METHOD:
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if (len < 1)
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break;
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e->inner_method = *pos;
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wpa_printf(MSG_DEBUG, "Inner EAP method: %u",
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e->inner_method);
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break;
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case NAI_REALM_EAP_AUTH_CRED_TYPE:
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if (len < 1)
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break;
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e->cred_type = *pos;
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wpa_printf(MSG_DEBUG, "Credential Type: %u",
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e->cred_type);
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break;
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case NAI_REALM_EAP_AUTH_TUNNELED_CRED_TYPE:
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if (len < 1)
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break;
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e->tunneled_cred_type = *pos;
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wpa_printf(MSG_DEBUG, "Tunneled EAP Method Credential "
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"Type: %u", e->tunneled_cred_type);
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break;
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default:
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wpa_printf(MSG_DEBUG, "Unsupported Authentication "
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"Parameter: id=%u len=%u", id, len);
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wpa_hexdump(MSG_DEBUG, "Authentication Parameter "
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"Value", pos, len);
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break;
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}
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pos += len;
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}
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return e_end;
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}
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static const u8 * nai_realm_parse_realm(struct nai_realm *r, const u8 *pos,
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const u8 *end)
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{
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u16 len;
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const u8 *f_end;
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u8 realm_len, e;
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if (end - pos < 4) {
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wpa_printf(MSG_DEBUG, "No room for NAI Realm Data "
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"fixed fields");
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return NULL;
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}
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len = WPA_GET_LE16(pos); /* NAI Realm Data field Length */
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pos += 2;
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if (pos + len > end || len < 3) {
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wpa_printf(MSG_DEBUG, "No room for NAI Realm Data "
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"(len=%u; left=%u)",
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len, (unsigned int) (end - pos));
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return NULL;
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}
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f_end = pos + len;
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r->encoding = *pos++;
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realm_len = *pos++;
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if (pos + realm_len > f_end) {
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wpa_printf(MSG_DEBUG, "No room for NAI Realm "
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"(len=%u; left=%u)",
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realm_len, (unsigned int) (f_end - pos));
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return NULL;
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}
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wpa_hexdump_ascii(MSG_DEBUG, "NAI Realm", pos, realm_len);
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r->realm = os_malloc(realm_len + 1);
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if (r->realm == NULL)
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return NULL;
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os_memcpy(r->realm, pos, realm_len);
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r->realm[realm_len] = '\0';
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pos += realm_len;
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if (pos + 1 > f_end) {
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wpa_printf(MSG_DEBUG, "No room for EAP Method Count");
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return NULL;
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}
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r->eap_count = *pos++;
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wpa_printf(MSG_DEBUG, "EAP Count: %u", r->eap_count);
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if (pos + r->eap_count * 3 > f_end) {
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wpa_printf(MSG_DEBUG, "No room for EAP Methods");
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return NULL;
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}
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r->eap = os_zalloc(r->eap_count * sizeof(struct nai_realm_eap));
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if (r->eap == NULL)
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return NULL;
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for (e = 0; e < r->eap_count; e++) {
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pos = nai_realm_parse_eap(&r->eap[e], pos, f_end);
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if (pos == NULL)
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return NULL;
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}
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return f_end;
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}
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static struct nai_realm * nai_realm_parse(struct wpabuf *anqp, u16 *count)
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{
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struct nai_realm *realm;
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const u8 *pos, *end;
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u16 i, num;
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if (anqp == NULL || wpabuf_len(anqp) < 2)
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return NULL;
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pos = wpabuf_head_u8(anqp);
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end = pos + wpabuf_len(anqp);
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num = WPA_GET_LE16(pos);
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wpa_printf(MSG_DEBUG, "NAI Realm Count: %u", num);
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pos += 2;
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if (num * 5 > end - pos) {
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wpa_printf(MSG_DEBUG, "Invalid NAI Realm Count %u - not "
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"enough data (%u octets) for that many realms",
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num, (unsigned int) (end - pos));
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return NULL;
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}
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realm = os_zalloc(num * sizeof(struct nai_realm));
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if (realm == NULL)
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return NULL;
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for (i = 0; i < num; i++) {
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pos = nai_realm_parse_realm(&realm[i], pos, end);
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if (pos == NULL) {
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nai_realm_free(realm, num);
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return NULL;
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}
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}
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*count = num;
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return realm;
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}
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static int nai_realm_match(struct nai_realm *realm, const char *home_realm)
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{
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char *tmp, *pos, *end;
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int match = 0;
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if (realm->realm == NULL || home_realm == NULL)
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return 0;
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if (os_strchr(realm->realm, ';') == NULL)
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return os_strcasecmp(realm->realm, home_realm) == 0;
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tmp = os_strdup(realm->realm);
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if (tmp == NULL)
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return 0;
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pos = tmp;
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while (*pos) {
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end = os_strchr(pos, ';');
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if (end)
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*end = '\0';
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if (os_strcasecmp(pos, home_realm) == 0) {
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match = 1;
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break;
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}
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if (end == NULL)
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break;
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pos = end + 1;
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}
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os_free(tmp);
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return match;
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}
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static int nai_realm_cred_username(struct nai_realm_eap *eap)
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{
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if (eap_get_name(EAP_VENDOR_IETF, eap->method) == NULL)
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return 0; /* method not supported */
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if (eap->method != EAP_TYPE_TTLS && eap->method != EAP_TYPE_PEAP) {
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/* Only tunneled methods with username/password supported */
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return 0;
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}
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if (eap->method == EAP_TYPE_PEAP &&
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eap_get_name(EAP_VENDOR_IETF, eap->inner_method) == NULL)
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return 0;
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if (eap->method == EAP_TYPE_TTLS) {
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if (eap->inner_method == 0 && eap->inner_non_eap == 0)
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return 0;
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if (eap->inner_method &&
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eap_get_name(EAP_VENDOR_IETF, eap->inner_method) == NULL)
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return 0;
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if (eap->inner_non_eap &&
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eap->inner_non_eap != NAI_REALM_INNER_NON_EAP_PAP &&
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eap->inner_non_eap != NAI_REALM_INNER_NON_EAP_CHAP &&
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eap->inner_non_eap != NAI_REALM_INNER_NON_EAP_MSCHAP &&
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eap->inner_non_eap != NAI_REALM_INNER_NON_EAP_MSCHAPV2)
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return 0;
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}
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if (eap->inner_method &&
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eap->inner_method != EAP_TYPE_GTC &&
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eap->inner_method != EAP_TYPE_MSCHAPV2)
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return 0;
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return 1;
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}
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struct nai_realm_eap * nai_realm_find_eap(struct wpa_supplicant *wpa_s,
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struct nai_realm *realm)
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{
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u8 e;
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if (wpa_s->conf->home_username == NULL ||
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wpa_s->conf->home_username[0] == '\0' ||
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wpa_s->conf->home_password == NULL ||
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wpa_s->conf->home_password[0] == '\0')
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return NULL;
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for (e = 0; e < realm->eap_count; e++) {
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struct nai_realm_eap *eap = &realm->eap[e];
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if (nai_realm_cred_username(eap))
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return eap;
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}
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return NULL;
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}
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#ifdef INTERWORKING_3GPP
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static int plmn_id_match(struct wpabuf *anqp, const char *imsi)
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{
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const char *sep;
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u8 plmn[3];
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const u8 *pos, *end;
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u8 udhl;
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sep = os_strchr(imsi, '-');
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if (sep == NULL || (sep - imsi != 5 && sep - imsi != 6))
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return 0;
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/* See Annex A of 3GPP TS 24.234 v8.1.0 for description */
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plmn[0] = (imsi[0] - '0') | ((imsi[1] - '0') << 4);
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plmn[1] = imsi[2] - '0';
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if (sep - imsi == 6)
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plmn[1] |= (imsi[5] - '0') << 4;
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else
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plmn[1] |= 0xf0;
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plmn[2] = (imsi[3] - '0') | ((imsi[4] - '0') << 4);
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if (anqp == NULL)
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return 0;
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pos = wpabuf_head_u8(anqp);
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end = pos + wpabuf_len(anqp);
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if (pos + 2 > end)
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return 0;
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if (*pos != 0) {
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wpa_printf(MSG_DEBUG, "Unsupported GUD version 0x%x", *pos);
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return 0;
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}
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pos++;
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udhl = *pos++;
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if (pos + udhl > end) {
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wpa_printf(MSG_DEBUG, "Invalid UDHL");
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return 0;
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}
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end = pos + udhl;
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while (pos + 2 <= end) {
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u8 iei, len;
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const u8 *l_end;
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iei = *pos++;
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len = *pos++ & 0x7f;
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if (pos + len > end)
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break;
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l_end = pos + len;
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if (iei == 0 && len > 0) {
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/* PLMN List */
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u8 num, i;
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num = *pos++;
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for (i = 0; i < num; i++) {
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if (pos + 3 > end)
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break;
|
|
if (os_memcmp(pos, plmn, 3) == 0)
|
|
return 1; /* Found matching PLMN */
|
|
}
|
|
}
|
|
|
|
pos = l_end;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int set_root_nai(struct wpa_ssid *ssid, const char *imsi, char prefix)
|
|
{
|
|
const char *sep, *msin;
|
|
char nai[100], *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 == NULL)
|
|
return -1;
|
|
plmn_len = sep - imsi;
|
|
if (plmn_len != 5 && plmn_len != 6)
|
|
return -1;
|
|
msin = sep + 1;
|
|
msin_len = os_strlen(msin);
|
|
|
|
pos = nai;
|
|
end = pos + sizeof(nai);
|
|
*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 wpa_config_set_quoted(ssid, "identity", nai);
|
|
}
|
|
|
|
#endif /* INTERWORKING_3GPP */
|
|
|
|
|
|
static int interworking_connect_3gpp(struct wpa_supplicant *wpa_s,
|
|
struct wpa_bss *bss)
|
|
{
|
|
#ifdef INTERWORKING_3GPP
|
|
struct wpa_ssid *ssid;
|
|
const u8 *ie;
|
|
|
|
ie = wpa_bss_get_ie(bss, WLAN_EID_SSID);
|
|
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;
|
|
|
|
wpas_notify_network_added(wpa_s, ssid);
|
|
wpa_config_set_network_defaults(ssid);
|
|
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];
|
|
|
|
/* TODO: figure out whether to use EAP-SIM, EAP-AKA, or EAP-AKA' */
|
|
if (wpa_config_set(ssid, "eap", "SIM", 0) < 0) {
|
|
wpa_printf(MSG_DEBUG, "EAP-SIM not supported");
|
|
goto fail;
|
|
}
|
|
if (set_root_nai(ssid, wpa_s->conf->home_imsi, '1') < 0) {
|
|
wpa_printf(MSG_DEBUG, "Failed to set Root NAI");
|
|
goto fail;
|
|
}
|
|
|
|
if (wpa_s->conf->home_milenage && wpa_s->conf->home_milenage[0]) {
|
|
if (wpa_config_set_quoted(ssid, "password",
|
|
wpa_s->conf->home_milenage) < 0)
|
|
goto fail;
|
|
} else {
|
|
/* TODO: PIN */
|
|
if (wpa_config_set_quoted(ssid, "pcsc", "") < 0)
|
|
goto fail;
|
|
}
|
|
|
|
if (wpa_s->conf->home_password && wpa_s->conf->home_password[0] &&
|
|
wpa_config_set_quoted(ssid, "password", wpa_s->conf->home_password)
|
|
< 0)
|
|
goto fail;
|
|
|
|
wpa_supplicant_select_network(wpa_s, ssid);
|
|
|
|
return 0;
|
|
|
|
fail:
|
|
wpas_notify_network_removed(wpa_s, ssid);
|
|
wpa_config_remove_network(wpa_s->conf, ssid->id);
|
|
#endif /* INTERWORKING_3GPP */
|
|
return -1;
|
|
}
|
|
|
|
|
|
int interworking_connect(struct wpa_supplicant *wpa_s, struct wpa_bss *bss)
|
|
{
|
|
struct wpa_ssid *ssid;
|
|
struct nai_realm *realm;
|
|
struct nai_realm_eap *eap = NULL;
|
|
u16 count, i;
|
|
char buf[100];
|
|
const u8 *ie;
|
|
|
|
if (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;
|
|
}
|
|
|
|
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));
|
|
count = 0;
|
|
}
|
|
|
|
for (i = 0; i < count; i++) {
|
|
if (!nai_realm_match(&realm[i], wpa_s->conf->home_realm))
|
|
continue;
|
|
eap = nai_realm_find_eap(wpa_s, &realm[i]);
|
|
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;
|
|
}
|
|
wpas_notify_network_added(wpa_s, ssid);
|
|
wpa_config_set_network_defaults(ssid);
|
|
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 (wpa_config_set(ssid, "eap", eap_get_name(EAP_VENDOR_IETF,
|
|
eap->method), 0) < 0)
|
|
goto fail;
|
|
|
|
if (wpa_s->conf->home_username && wpa_s->conf->home_username[0] &&
|
|
wpa_config_set_quoted(ssid, "identity",
|
|
wpa_s->conf->home_username) < 0)
|
|
goto fail;
|
|
|
|
if (wpa_s->conf->home_password && wpa_s->conf->home_password[0] &&
|
|
wpa_config_set_quoted(ssid, "password", wpa_s->conf->home_password)
|
|
< 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=CHAP\"", 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;
|
|
}
|
|
break;
|
|
case EAP_TYPE_PEAP:
|
|
os_snprintf(buf, sizeof(buf), "\"auth=%s\"",
|
|
eap_get_name(EAP_VENDOR_IETF, eap->inner_method));
|
|
if (wpa_config_set(ssid, "phase2", buf, 0) < 0)
|
|
goto fail;
|
|
break;
|
|
}
|
|
|
|
if (wpa_s->conf->home_ca_cert && wpa_s->conf->home_ca_cert[0] &&
|
|
wpa_config_set_quoted(ssid, "ca_cert", wpa_s->conf->home_ca_cert) <
|
|
0)
|
|
goto fail;
|
|
|
|
nai_realm_free(realm, count);
|
|
|
|
wpa_supplicant_select_network(wpa_s, ssid);
|
|
|
|
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 int interworking_credentials_available_3gpp(
|
|
struct wpa_supplicant *wpa_s, struct wpa_bss *bss)
|
|
{
|
|
int ret = 0;
|
|
|
|
#ifdef INTERWORKING_3GPP
|
|
if (bss->anqp_3gpp == NULL)
|
|
return ret;
|
|
|
|
if (wpa_s->conf->home_imsi == NULL || !wpa_s->conf->home_imsi[0] ||
|
|
wpa_s->conf->home_milenage == NULL ||
|
|
!wpa_s->conf->home_milenage[0])
|
|
return ret;
|
|
|
|
wpa_printf(MSG_DEBUG, "Interworking: Parsing 3GPP info from " MACSTR,
|
|
MAC2STR(bss->bssid));
|
|
ret = plmn_id_match(bss->anqp_3gpp, wpa_s->conf->home_imsi);
|
|
wpa_printf(MSG_DEBUG, "PLMN match %sfound", ret ? "" : "not ");
|
|
#endif /* INTERWORKING_3GPP */
|
|
return ret;
|
|
}
|
|
|
|
|
|
static int interworking_credentials_available_realm(
|
|
struct wpa_supplicant *wpa_s, struct wpa_bss *bss)
|
|
{
|
|
struct nai_realm *realm;
|
|
u16 count, i;
|
|
int found = 0;
|
|
|
|
if (bss->anqp_nai_realm == NULL)
|
|
return 0;
|
|
|
|
if (wpa_s->conf->home_realm == NULL)
|
|
return 0;
|
|
|
|
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 0;
|
|
}
|
|
|
|
for (i = 0; i < count; i++) {
|
|
if (!nai_realm_match(&realm[i], wpa_s->conf->home_realm))
|
|
continue;
|
|
if (nai_realm_find_eap(wpa_s, &realm[i])) {
|
|
found++;
|
|
break;
|
|
}
|
|
}
|
|
|
|
nai_realm_free(realm, count);
|
|
|
|
return found;
|
|
}
|
|
|
|
|
|
static int interworking_credentials_available(struct wpa_supplicant *wpa_s,
|
|
struct wpa_bss *bss)
|
|
{
|
|
return interworking_credentials_available_realm(wpa_s, bss) ||
|
|
interworking_credentials_available_3gpp(wpa_s, bss);
|
|
}
|
|
|
|
|
|
static void interworking_select_network(struct wpa_supplicant *wpa_s)
|
|
{
|
|
struct wpa_bss *bss, *selected = NULL;
|
|
unsigned int count = 0;
|
|
|
|
wpa_s->network_select = 0;
|
|
|
|
dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
|
|
if (!interworking_credentials_available(wpa_s, bss))
|
|
continue;
|
|
count++;
|
|
wpa_msg(wpa_s, MSG_INFO, INTERWORKING_AP MACSTR,
|
|
MAC2STR(bss->bssid));
|
|
if (selected == NULL && wpa_s->auto_select)
|
|
selected = bss;
|
|
}
|
|
|
|
if (count == 0) {
|
|
wpa_msg(wpa_s, MSG_INFO, INTERWORKING_NO_MATCH "No network "
|
|
"with matching credentials found");
|
|
}
|
|
|
|
if (selected)
|
|
interworking_connect(wpa_s, selected);
|
|
}
|
|
|
|
|
|
static void interworking_next_anqp_fetch(struct wpa_supplicant *wpa_s)
|
|
{
|
|
struct wpa_bss *bss;
|
|
int found = 0;
|
|
const u8 *ie;
|
|
|
|
if (!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)) {
|
|
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);
|
|
}
|
|
}
|
|
|
|
|
|
static 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;
|
|
|
|
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)
|
|
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);
|
|
|
|
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 (bss) {
|
|
wpabuf_free(bss->anqp_venue_name);
|
|
bss->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 (bss) {
|
|
wpabuf_free(bss->anqp_network_auth_type);
|
|
bss->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 (bss) {
|
|
wpabuf_free(bss->anqp_roaming_consortium);
|
|
bss->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 (bss) {
|
|
wpabuf_free(bss->anqp_ip_addr_type_availability);
|
|
bss->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 (bss) {
|
|
wpabuf_free(bss->anqp_nai_realm);
|
|
bss->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 (bss) {
|
|
wpabuf_free(bss->anqp_3gpp);
|
|
bss->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 (bss) {
|
|
wpabuf_free(bss->anqp_domain_name);
|
|
bss->anqp_domain_name = wpabuf_alloc_copy(pos, slen);
|
|
}
|
|
break;
|
|
case ANQP_VENDOR_SPECIFIC:
|
|
if (slen < 3)
|
|
return;
|
|
|
|
switch (WPA_GET_BE24(pos)) {
|
|
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_select = !!auto_select;
|
|
wpa_printf(MSG_DEBUG, "Interworking: Start scan for network "
|
|
"selection");
|
|
wpa_s->scan_res_handler = interworking_scan_res_handler;
|
|
wpa_s->scan_req = 2;
|
|
wpa_supplicant_req_scan(wpa_s, 0, 0);
|
|
|
|
return 0;
|
|
}
|