wpa_supplicant: Initial Revision 0.8.X
Based on:
commit 0725cc7b7efc434910e89865c42eda7ce61bbf08
Author: Jouni Malinen <j@w1.fi>
Date: Thu Apr 21 20:41:01 2011 +0300
Enable CONFIG_DRIVER_NL80211=y in the default configuration
nl80211 should be preferred over WEXT with any recent Linux
kernel version.
Change-Id: I26aec5afbbd4f4a1f5fd900912545b6f5050de64
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
diff --git a/src/eap_peer/eap.c b/src/eap_peer/eap.c
new file mode 100644
index 0000000..8a9826f
--- /dev/null
+++ b/src/eap_peer/eap.c
@@ -0,0 +1,2159 @@
+/*
+ * EAP peer state machines (RFC 4137)
+ * Copyright (c) 2004-2010, Jouni Malinen <j@w1.fi>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Alternatively, this software may be distributed under the terms of BSD
+ * license.
+ *
+ * See README and COPYING for more details.
+ *
+ * This file implements the Peer State Machine as defined in RFC 4137. The used
+ * states and state transitions match mostly with the RFC. However, there are
+ * couple of additional transitions for working around small issues noticed
+ * during testing. These exceptions are explained in comments within the
+ * functions in this file. The method functions, m.func(), are similar to the
+ * ones used in RFC 4137, but some small changes have used here to optimize
+ * operations and to add functionality needed for fast re-authentication
+ * (session resumption).
+ */
+
+#include "includes.h"
+
+#include "common.h"
+#include "pcsc_funcs.h"
+#include "state_machine.h"
+#include "crypto/crypto.h"
+#include "crypto/tls.h"
+#include "common/wpa_ctrl.h"
+#include "eap_common/eap_wsc_common.h"
+#include "eap_i.h"
+#include "eap_config.h"
+
+#define STATE_MACHINE_DATA struct eap_sm
+#define STATE_MACHINE_DEBUG_PREFIX "EAP"
+
+#define EAP_MAX_AUTH_ROUNDS 50
+#define EAP_CLIENT_TIMEOUT_DEFAULT 60
+
+
+static Boolean eap_sm_allowMethod(struct eap_sm *sm, int vendor,
+ EapType method);
+static struct wpabuf * eap_sm_buildNak(struct eap_sm *sm, int id);
+static void eap_sm_processIdentity(struct eap_sm *sm,
+ const struct wpabuf *req);
+static void eap_sm_processNotify(struct eap_sm *sm, const struct wpabuf *req);
+static struct wpabuf * eap_sm_buildNotify(int id);
+static void eap_sm_parseEapReq(struct eap_sm *sm, const struct wpabuf *req);
+#if defined(CONFIG_CTRL_IFACE) || !defined(CONFIG_NO_STDOUT_DEBUG)
+static const char * eap_sm_method_state_txt(EapMethodState state);
+static const char * eap_sm_decision_txt(EapDecision decision);
+#endif /* CONFIG_CTRL_IFACE || !CONFIG_NO_STDOUT_DEBUG */
+
+
+
+static Boolean eapol_get_bool(struct eap_sm *sm, enum eapol_bool_var var)
+{
+ return sm->eapol_cb->get_bool(sm->eapol_ctx, var);
+}
+
+
+static void eapol_set_bool(struct eap_sm *sm, enum eapol_bool_var var,
+ Boolean value)
+{
+ sm->eapol_cb->set_bool(sm->eapol_ctx, var, value);
+}
+
+
+static unsigned int eapol_get_int(struct eap_sm *sm, enum eapol_int_var var)
+{
+ return sm->eapol_cb->get_int(sm->eapol_ctx, var);
+}
+
+
+static void eapol_set_int(struct eap_sm *sm, enum eapol_int_var var,
+ unsigned int value)
+{
+ sm->eapol_cb->set_int(sm->eapol_ctx, var, value);
+}
+
+
+static struct wpabuf * eapol_get_eapReqData(struct eap_sm *sm)
+{
+ return sm->eapol_cb->get_eapReqData(sm->eapol_ctx);
+}
+
+
+static void eap_deinit_prev_method(struct eap_sm *sm, const char *txt)
+{
+ if (sm->m == NULL || sm->eap_method_priv == NULL)
+ return;
+
+ wpa_printf(MSG_DEBUG, "EAP: deinitialize previously used EAP method "
+ "(%d, %s) at %s", sm->selectedMethod, sm->m->name, txt);
+ sm->m->deinit(sm, sm->eap_method_priv);
+ sm->eap_method_priv = NULL;
+ sm->m = NULL;
+}
+
+
+/**
+ * eap_allowed_method - Check whether EAP method is allowed
+ * @sm: Pointer to EAP state machine allocated with eap_peer_sm_init()
+ * @vendor: Vendor-Id for expanded types or 0 = IETF for legacy types
+ * @method: EAP type
+ * Returns: 1 = allowed EAP method, 0 = not allowed
+ */
+int eap_allowed_method(struct eap_sm *sm, int vendor, u32 method)
+{
+ struct eap_peer_config *config = eap_get_config(sm);
+ int i;
+ struct eap_method_type *m;
+
+ if (config == NULL || config->eap_methods == NULL)
+ return 1;
+
+ m = config->eap_methods;
+ for (i = 0; m[i].vendor != EAP_VENDOR_IETF ||
+ m[i].method != EAP_TYPE_NONE; i++) {
+ if (m[i].vendor == vendor && m[i].method == method)
+ return 1;
+ }
+ return 0;
+}
+
+
+/*
+ * This state initializes state machine variables when the machine is
+ * activated (portEnabled = TRUE). This is also used when re-starting
+ * authentication (eapRestart == TRUE).
+ */
+SM_STATE(EAP, INITIALIZE)
+{
+ SM_ENTRY(EAP, INITIALIZE);
+ if (sm->fast_reauth && sm->m && sm->m->has_reauth_data &&
+ sm->m->has_reauth_data(sm, sm->eap_method_priv) &&
+ !sm->prev_failure) {
+ wpa_printf(MSG_DEBUG, "EAP: maintaining EAP method data for "
+ "fast reauthentication");
+ sm->m->deinit_for_reauth(sm, sm->eap_method_priv);
+ } else {
+ eap_deinit_prev_method(sm, "INITIALIZE");
+ }
+ sm->selectedMethod = EAP_TYPE_NONE;
+ sm->methodState = METHOD_NONE;
+ sm->allowNotifications = TRUE;
+ sm->decision = DECISION_FAIL;
+ eapol_set_int(sm, EAPOL_idleWhile, sm->ClientTimeout);
+ eapol_set_bool(sm, EAPOL_eapSuccess, FALSE);
+ eapol_set_bool(sm, EAPOL_eapFail, FALSE);
+ os_free(sm->eapKeyData);
+ sm->eapKeyData = NULL;
+ sm->eapKeyAvailable = FALSE;
+ eapol_set_bool(sm, EAPOL_eapRestart, FALSE);
+ sm->lastId = -1; /* new session - make sure this does not match with
+ * the first EAP-Packet */
+ /*
+ * RFC 4137 does not reset eapResp and eapNoResp here. However, this
+ * seemed to be able to trigger cases where both were set and if EAPOL
+ * state machine uses eapNoResp first, it may end up not sending a real
+ * reply correctly. This occurred when the workaround in FAIL state set
+ * eapNoResp = TRUE.. Maybe that workaround needs to be fixed to do
+ * something else(?)
+ */
+ eapol_set_bool(sm, EAPOL_eapResp, FALSE);
+ eapol_set_bool(sm, EAPOL_eapNoResp, FALSE);
+ sm->num_rounds = 0;
+ sm->prev_failure = 0;
+}
+
+
+/*
+ * This state is reached whenever service from the lower layer is interrupted
+ * or unavailable (portEnabled == FALSE). Immediate transition to INITIALIZE
+ * occurs when the port becomes enabled.
+ */
+SM_STATE(EAP, DISABLED)
+{
+ SM_ENTRY(EAP, DISABLED);
+ sm->num_rounds = 0;
+}
+
+
+/*
+ * The state machine spends most of its time here, waiting for something to
+ * happen. This state is entered unconditionally from INITIALIZE, DISCARD, and
+ * SEND_RESPONSE states.
+ */
+SM_STATE(EAP, IDLE)
+{
+ SM_ENTRY(EAP, IDLE);
+}
+
+
+/*
+ * This state is entered when an EAP packet is received (eapReq == TRUE) to
+ * parse the packet header.
+ */
+SM_STATE(EAP, RECEIVED)
+{
+ const struct wpabuf *eapReqData;
+
+ SM_ENTRY(EAP, RECEIVED);
+ eapReqData = eapol_get_eapReqData(sm);
+ /* parse rxReq, rxSuccess, rxFailure, reqId, reqMethod */
+ eap_sm_parseEapReq(sm, eapReqData);
+ sm->num_rounds++;
+}
+
+
+/*
+ * This state is entered when a request for a new type comes in. Either the
+ * correct method is started, or a Nak response is built.
+ */
+SM_STATE(EAP, GET_METHOD)
+{
+ int reinit;
+ EapType method;
+
+ SM_ENTRY(EAP, GET_METHOD);
+
+ if (sm->reqMethod == EAP_TYPE_EXPANDED)
+ method = sm->reqVendorMethod;
+ else
+ method = sm->reqMethod;
+
+ if (!eap_sm_allowMethod(sm, sm->reqVendor, method)) {
+ wpa_printf(MSG_DEBUG, "EAP: vendor %u method %u not allowed",
+ sm->reqVendor, method);
+ wpa_msg(sm->msg_ctx, MSG_INFO, WPA_EVENT_EAP_PROPOSED_METHOD
+ "vendor=%u method=%u -> NAK",
+ sm->reqVendor, method);
+ goto nak;
+ }
+
+ wpa_msg(sm->msg_ctx, MSG_INFO, WPA_EVENT_EAP_PROPOSED_METHOD
+ "vendor=%u method=%u", sm->reqVendor, method);
+
+ /*
+ * RFC 4137 does not define specific operation for fast
+ * re-authentication (session resumption). The design here is to allow
+ * the previously used method data to be maintained for
+ * re-authentication if the method support session resumption.
+ * Otherwise, the previously used method data is freed and a new method
+ * is allocated here.
+ */
+ if (sm->fast_reauth &&
+ sm->m && sm->m->vendor == sm->reqVendor &&
+ sm->m->method == method &&
+ sm->m->has_reauth_data &&
+ sm->m->has_reauth_data(sm, sm->eap_method_priv)) {
+ wpa_printf(MSG_DEBUG, "EAP: Using previous method data"
+ " for fast re-authentication");
+ reinit = 1;
+ } else {
+ eap_deinit_prev_method(sm, "GET_METHOD");
+ reinit = 0;
+ }
+
+ sm->selectedMethod = sm->reqMethod;
+ if (sm->m == NULL)
+ sm->m = eap_peer_get_eap_method(sm->reqVendor, method);
+ if (!sm->m) {
+ wpa_printf(MSG_DEBUG, "EAP: Could not find selected method: "
+ "vendor %d method %d",
+ sm->reqVendor, method);
+ goto nak;
+ }
+
+ sm->ClientTimeout = EAP_CLIENT_TIMEOUT_DEFAULT;
+
+ wpa_printf(MSG_DEBUG, "EAP: Initialize selected EAP method: "
+ "vendor %u method %u (%s)",
+ sm->reqVendor, method, sm->m->name);
+ if (reinit)
+ sm->eap_method_priv = sm->m->init_for_reauth(
+ sm, sm->eap_method_priv);
+ else
+ sm->eap_method_priv = sm->m->init(sm);
+
+ if (sm->eap_method_priv == NULL) {
+ struct eap_peer_config *config = eap_get_config(sm);
+ wpa_msg(sm->msg_ctx, MSG_INFO,
+ "EAP: Failed to initialize EAP method: vendor %u "
+ "method %u (%s)",
+ sm->reqVendor, method, sm->m->name);
+ sm->m = NULL;
+ sm->methodState = METHOD_NONE;
+ sm->selectedMethod = EAP_TYPE_NONE;
+ if (sm->reqMethod == EAP_TYPE_TLS && config &&
+ (config->pending_req_pin ||
+ config->pending_req_passphrase)) {
+ /*
+ * Return without generating Nak in order to allow
+ * entering of PIN code or passphrase to retry the
+ * current EAP packet.
+ */
+ wpa_printf(MSG_DEBUG, "EAP: Pending PIN/passphrase "
+ "request - skip Nak");
+ return;
+ }
+
+ goto nak;
+ }
+
+ sm->methodState = METHOD_INIT;
+ wpa_msg(sm->msg_ctx, MSG_INFO, WPA_EVENT_EAP_METHOD
+ "EAP vendor %u method %u (%s) selected",
+ sm->reqVendor, method, sm->m->name);
+ return;
+
+nak:
+ wpabuf_free(sm->eapRespData);
+ sm->eapRespData = NULL;
+ sm->eapRespData = eap_sm_buildNak(sm, sm->reqId);
+}
+
+
+/*
+ * The method processing happens here. The request from the authenticator is
+ * processed, and an appropriate response packet is built.
+ */
+SM_STATE(EAP, METHOD)
+{
+ struct wpabuf *eapReqData;
+ struct eap_method_ret ret;
+
+ SM_ENTRY(EAP, METHOD);
+ if (sm->m == NULL) {
+ wpa_printf(MSG_WARNING, "EAP::METHOD - method not selected");
+ return;
+ }
+
+ eapReqData = eapol_get_eapReqData(sm);
+
+ /*
+ * Get ignore, methodState, decision, allowNotifications, and
+ * eapRespData. RFC 4137 uses three separate method procedure (check,
+ * process, and buildResp) in this state. These have been combined into
+ * a single function call to m->process() in order to optimize EAP
+ * method implementation interface a bit. These procedures are only
+ * used from within this METHOD state, so there is no need to keep
+ * these as separate C functions.
+ *
+ * The RFC 4137 procedures return values as follows:
+ * ignore = m.check(eapReqData)
+ * (methodState, decision, allowNotifications) = m.process(eapReqData)
+ * eapRespData = m.buildResp(reqId)
+ */
+ os_memset(&ret, 0, sizeof(ret));
+ ret.ignore = sm->ignore;
+ ret.methodState = sm->methodState;
+ ret.decision = sm->decision;
+ ret.allowNotifications = sm->allowNotifications;
+ wpabuf_free(sm->eapRespData);
+ sm->eapRespData = NULL;
+ sm->eapRespData = sm->m->process(sm, sm->eap_method_priv, &ret,
+ eapReqData);
+ wpa_printf(MSG_DEBUG, "EAP: method process -> ignore=%s "
+ "methodState=%s decision=%s",
+ ret.ignore ? "TRUE" : "FALSE",
+ eap_sm_method_state_txt(ret.methodState),
+ eap_sm_decision_txt(ret.decision));
+
+ sm->ignore = ret.ignore;
+ if (sm->ignore)
+ return;
+ sm->methodState = ret.methodState;
+ sm->decision = ret.decision;
+ sm->allowNotifications = ret.allowNotifications;
+
+ if (sm->m->isKeyAvailable && sm->m->getKey &&
+ sm->m->isKeyAvailable(sm, sm->eap_method_priv)) {
+ os_free(sm->eapKeyData);
+ sm->eapKeyData = sm->m->getKey(sm, sm->eap_method_priv,
+ &sm->eapKeyDataLen);
+ }
+}
+
+
+/*
+ * This state signals the lower layer that a response packet is ready to be
+ * sent.
+ */
+SM_STATE(EAP, SEND_RESPONSE)
+{
+ SM_ENTRY(EAP, SEND_RESPONSE);
+ wpabuf_free(sm->lastRespData);
+ if (sm->eapRespData) {
+ if (sm->workaround)
+ os_memcpy(sm->last_md5, sm->req_md5, 16);
+ sm->lastId = sm->reqId;
+ sm->lastRespData = wpabuf_dup(sm->eapRespData);
+ eapol_set_bool(sm, EAPOL_eapResp, TRUE);
+ } else
+ sm->lastRespData = NULL;
+ eapol_set_bool(sm, EAPOL_eapReq, FALSE);
+ eapol_set_int(sm, EAPOL_idleWhile, sm->ClientTimeout);
+}
+
+
+/*
+ * This state signals the lower layer that the request was discarded, and no
+ * response packet will be sent at this time.
+ */
+SM_STATE(EAP, DISCARD)
+{
+ SM_ENTRY(EAP, DISCARD);
+ eapol_set_bool(sm, EAPOL_eapReq, FALSE);
+ eapol_set_bool(sm, EAPOL_eapNoResp, TRUE);
+}
+
+
+/*
+ * Handles requests for Identity method and builds a response.
+ */
+SM_STATE(EAP, IDENTITY)
+{
+ const struct wpabuf *eapReqData;
+
+ SM_ENTRY(EAP, IDENTITY);
+ eapReqData = eapol_get_eapReqData(sm);
+ eap_sm_processIdentity(sm, eapReqData);
+ wpabuf_free(sm->eapRespData);
+ sm->eapRespData = NULL;
+ sm->eapRespData = eap_sm_buildIdentity(sm, sm->reqId, 0);
+}
+
+
+/*
+ * Handles requests for Notification method and builds a response.
+ */
+SM_STATE(EAP, NOTIFICATION)
+{
+ const struct wpabuf *eapReqData;
+
+ SM_ENTRY(EAP, NOTIFICATION);
+ eapReqData = eapol_get_eapReqData(sm);
+ eap_sm_processNotify(sm, eapReqData);
+ wpabuf_free(sm->eapRespData);
+ sm->eapRespData = NULL;
+ sm->eapRespData = eap_sm_buildNotify(sm->reqId);
+}
+
+
+/*
+ * This state retransmits the previous response packet.
+ */
+SM_STATE(EAP, RETRANSMIT)
+{
+ SM_ENTRY(EAP, RETRANSMIT);
+ wpabuf_free(sm->eapRespData);
+ if (sm->lastRespData)
+ sm->eapRespData = wpabuf_dup(sm->lastRespData);
+ else
+ sm->eapRespData = NULL;
+}
+
+
+/*
+ * This state is entered in case of a successful completion of authentication
+ * and state machine waits here until port is disabled or EAP authentication is
+ * restarted.
+ */
+SM_STATE(EAP, SUCCESS)
+{
+ SM_ENTRY(EAP, SUCCESS);
+ if (sm->eapKeyData != NULL)
+ sm->eapKeyAvailable = TRUE;
+ eapol_set_bool(sm, EAPOL_eapSuccess, TRUE);
+
+ /*
+ * RFC 4137 does not clear eapReq here, but this seems to be required
+ * to avoid processing the same request twice when state machine is
+ * initialized.
+ */
+ eapol_set_bool(sm, EAPOL_eapReq, FALSE);
+
+ /*
+ * RFC 4137 does not set eapNoResp here, but this seems to be required
+ * to get EAPOL Supplicant backend state machine into SUCCESS state. In
+ * addition, either eapResp or eapNoResp is required to be set after
+ * processing the received EAP frame.
+ */
+ eapol_set_bool(sm, EAPOL_eapNoResp, TRUE);
+
+ wpa_msg(sm->msg_ctx, MSG_INFO, WPA_EVENT_EAP_SUCCESS
+ "EAP authentication completed successfully");
+}
+
+
+/*
+ * This state is entered in case of a failure and state machine waits here
+ * until port is disabled or EAP authentication is restarted.
+ */
+SM_STATE(EAP, FAILURE)
+{
+ SM_ENTRY(EAP, FAILURE);
+ eapol_set_bool(sm, EAPOL_eapFail, TRUE);
+
+ /*
+ * RFC 4137 does not clear eapReq here, but this seems to be required
+ * to avoid processing the same request twice when state machine is
+ * initialized.
+ */
+ eapol_set_bool(sm, EAPOL_eapReq, FALSE);
+
+ /*
+ * RFC 4137 does not set eapNoResp here. However, either eapResp or
+ * eapNoResp is required to be set after processing the received EAP
+ * frame.
+ */
+ eapol_set_bool(sm, EAPOL_eapNoResp, TRUE);
+
+ wpa_msg(sm->msg_ctx, MSG_INFO, WPA_EVENT_EAP_FAILURE
+ "EAP authentication failed");
+
+ sm->prev_failure = 1;
+}
+
+
+static int eap_success_workaround(struct eap_sm *sm, int reqId, int lastId)
+{
+ /*
+ * At least Microsoft IAS and Meetinghouse Aegis seem to be sending
+ * EAP-Success/Failure with lastId + 1 even though RFC 3748 and
+ * RFC 4137 require that reqId == lastId. In addition, it looks like
+ * Ringmaster v2.1.2.0 would be using lastId + 2 in EAP-Success.
+ *
+ * Accept this kind of Id if EAP workarounds are enabled. These are
+ * unauthenticated plaintext messages, so this should have minimal
+ * security implications (bit easier to fake EAP-Success/Failure).
+ */
+ if (sm->workaround && (reqId == ((lastId + 1) & 0xff) ||
+ reqId == ((lastId + 2) & 0xff))) {
+ wpa_printf(MSG_DEBUG, "EAP: Workaround for unexpected "
+ "identifier field in EAP Success: "
+ "reqId=%d lastId=%d (these are supposed to be "
+ "same)", reqId, lastId);
+ return 1;
+ }
+ wpa_printf(MSG_DEBUG, "EAP: EAP-Success Id mismatch - reqId=%d "
+ "lastId=%d", reqId, lastId);
+ return 0;
+}
+
+
+/*
+ * RFC 4137 - Appendix A.1: EAP Peer State Machine - State transitions
+ */
+
+static void eap_peer_sm_step_idle(struct eap_sm *sm)
+{
+ /*
+ * The first three transitions are from RFC 4137. The last two are
+ * local additions to handle special cases with LEAP and PEAP server
+ * not sending EAP-Success in some cases.
+ */
+ if (eapol_get_bool(sm, EAPOL_eapReq))
+ SM_ENTER(EAP, RECEIVED);
+ else if ((eapol_get_bool(sm, EAPOL_altAccept) &&
+ sm->decision != DECISION_FAIL) ||
+ (eapol_get_int(sm, EAPOL_idleWhile) == 0 &&
+ sm->decision == DECISION_UNCOND_SUCC))
+ SM_ENTER(EAP, SUCCESS);
+ else if (eapol_get_bool(sm, EAPOL_altReject) ||
+ (eapol_get_int(sm, EAPOL_idleWhile) == 0 &&
+ sm->decision != DECISION_UNCOND_SUCC) ||
+ (eapol_get_bool(sm, EAPOL_altAccept) &&
+ sm->methodState != METHOD_CONT &&
+ sm->decision == DECISION_FAIL))
+ SM_ENTER(EAP, FAILURE);
+ else if (sm->selectedMethod == EAP_TYPE_LEAP &&
+ sm->leap_done && sm->decision != DECISION_FAIL &&
+ sm->methodState == METHOD_DONE)
+ SM_ENTER(EAP, SUCCESS);
+ else if (sm->selectedMethod == EAP_TYPE_PEAP &&
+ sm->peap_done && sm->decision != DECISION_FAIL &&
+ sm->methodState == METHOD_DONE)
+ SM_ENTER(EAP, SUCCESS);
+}
+
+
+static int eap_peer_req_is_duplicate(struct eap_sm *sm)
+{
+ int duplicate;
+
+ duplicate = (sm->reqId == sm->lastId) && sm->rxReq;
+ if (sm->workaround && duplicate &&
+ os_memcmp(sm->req_md5, sm->last_md5, 16) != 0) {
+ /*
+ * RFC 4137 uses (reqId == lastId) as the only verification for
+ * duplicate EAP requests. However, this misses cases where the
+ * AS is incorrectly using the same id again; and
+ * unfortunately, such implementations exist. Use MD5 hash as
+ * an extra verification for the packets being duplicate to
+ * workaround these issues.
+ */
+ wpa_printf(MSG_DEBUG, "EAP: AS used the same Id again, but "
+ "EAP packets were not identical");
+ wpa_printf(MSG_DEBUG, "EAP: workaround - assume this is not a "
+ "duplicate packet");
+ duplicate = 0;
+ }
+
+ return duplicate;
+}
+
+
+static void eap_peer_sm_step_received(struct eap_sm *sm)
+{
+ int duplicate = eap_peer_req_is_duplicate(sm);
+
+ /*
+ * Two special cases below for LEAP are local additions to work around
+ * odd LEAP behavior (EAP-Success in the middle of authentication and
+ * then swapped roles). Other transitions are based on RFC 4137.
+ */
+ if (sm->rxSuccess && sm->decision != DECISION_FAIL &&
+ (sm->reqId == sm->lastId ||
+ eap_success_workaround(sm, sm->reqId, sm->lastId)))
+ SM_ENTER(EAP, SUCCESS);
+ else if (sm->methodState != METHOD_CONT &&
+ ((sm->rxFailure &&
+ sm->decision != DECISION_UNCOND_SUCC) ||
+ (sm->rxSuccess && sm->decision == DECISION_FAIL &&
+ (sm->selectedMethod != EAP_TYPE_LEAP ||
+ sm->methodState != METHOD_MAY_CONT))) &&
+ (sm->reqId == sm->lastId ||
+ eap_success_workaround(sm, sm->reqId, sm->lastId)))
+ SM_ENTER(EAP, FAILURE);
+ else if (sm->rxReq && duplicate)
+ SM_ENTER(EAP, RETRANSMIT);
+ else if (sm->rxReq && !duplicate &&
+ sm->reqMethod == EAP_TYPE_NOTIFICATION &&
+ sm->allowNotifications)
+ SM_ENTER(EAP, NOTIFICATION);
+ else if (sm->rxReq && !duplicate &&
+ sm->selectedMethod == EAP_TYPE_NONE &&
+ sm->reqMethod == EAP_TYPE_IDENTITY)
+ SM_ENTER(EAP, IDENTITY);
+ else if (sm->rxReq && !duplicate &&
+ sm->selectedMethod == EAP_TYPE_NONE &&
+ sm->reqMethod != EAP_TYPE_IDENTITY &&
+ sm->reqMethod != EAP_TYPE_NOTIFICATION)
+ SM_ENTER(EAP, GET_METHOD);
+ else if (sm->rxReq && !duplicate &&
+ sm->reqMethod == sm->selectedMethod &&
+ sm->methodState != METHOD_DONE)
+ SM_ENTER(EAP, METHOD);
+ else if (sm->selectedMethod == EAP_TYPE_LEAP &&
+ (sm->rxSuccess || sm->rxResp))
+ SM_ENTER(EAP, METHOD);
+ else
+ SM_ENTER(EAP, DISCARD);
+}
+
+
+static void eap_peer_sm_step_local(struct eap_sm *sm)
+{
+ switch (sm->EAP_state) {
+ case EAP_INITIALIZE:
+ SM_ENTER(EAP, IDLE);
+ break;
+ case EAP_DISABLED:
+ if (eapol_get_bool(sm, EAPOL_portEnabled) &&
+ !sm->force_disabled)
+ SM_ENTER(EAP, INITIALIZE);
+ break;
+ case EAP_IDLE:
+ eap_peer_sm_step_idle(sm);
+ break;
+ case EAP_RECEIVED:
+ eap_peer_sm_step_received(sm);
+ break;
+ case EAP_GET_METHOD:
+ if (sm->selectedMethod == sm->reqMethod)
+ SM_ENTER(EAP, METHOD);
+ else
+ SM_ENTER(EAP, SEND_RESPONSE);
+ break;
+ case EAP_METHOD:
+ if (sm->ignore)
+ SM_ENTER(EAP, DISCARD);
+ else
+ SM_ENTER(EAP, SEND_RESPONSE);
+ break;
+ case EAP_SEND_RESPONSE:
+ SM_ENTER(EAP, IDLE);
+ break;
+ case EAP_DISCARD:
+ SM_ENTER(EAP, IDLE);
+ break;
+ case EAP_IDENTITY:
+ SM_ENTER(EAP, SEND_RESPONSE);
+ break;
+ case EAP_NOTIFICATION:
+ SM_ENTER(EAP, SEND_RESPONSE);
+ break;
+ case EAP_RETRANSMIT:
+ SM_ENTER(EAP, SEND_RESPONSE);
+ break;
+ case EAP_SUCCESS:
+ break;
+ case EAP_FAILURE:
+ break;
+ }
+}
+
+
+SM_STEP(EAP)
+{
+ /* Global transitions */
+ if (eapol_get_bool(sm, EAPOL_eapRestart) &&
+ eapol_get_bool(sm, EAPOL_portEnabled))
+ SM_ENTER_GLOBAL(EAP, INITIALIZE);
+ else if (!eapol_get_bool(sm, EAPOL_portEnabled) || sm->force_disabled)
+ SM_ENTER_GLOBAL(EAP, DISABLED);
+ else if (sm->num_rounds > EAP_MAX_AUTH_ROUNDS) {
+ /* RFC 4137 does not place any limit on number of EAP messages
+ * in an authentication session. However, some error cases have
+ * ended up in a state were EAP messages were sent between the
+ * peer and server in a loop (e.g., TLS ACK frame in both
+ * direction). Since this is quite undesired outcome, limit the
+ * total number of EAP round-trips and abort authentication if
+ * this limit is exceeded.
+ */
+ if (sm->num_rounds == EAP_MAX_AUTH_ROUNDS + 1) {
+ wpa_msg(sm->msg_ctx, MSG_INFO, "EAP: more than %d "
+ "authentication rounds - abort",
+ EAP_MAX_AUTH_ROUNDS);
+ sm->num_rounds++;
+ SM_ENTER_GLOBAL(EAP, FAILURE);
+ }
+ } else {
+ /* Local transitions */
+ eap_peer_sm_step_local(sm);
+ }
+}
+
+
+static Boolean eap_sm_allowMethod(struct eap_sm *sm, int vendor,
+ EapType method)
+{
+ if (!eap_allowed_method(sm, vendor, method)) {
+ wpa_printf(MSG_DEBUG, "EAP: configuration does not allow: "
+ "vendor %u method %u", vendor, method);
+ return FALSE;
+ }
+ if (eap_peer_get_eap_method(vendor, method))
+ return TRUE;
+ wpa_printf(MSG_DEBUG, "EAP: not included in build: "
+ "vendor %u method %u", vendor, method);
+ return FALSE;
+}
+
+
+static struct wpabuf * eap_sm_build_expanded_nak(
+ struct eap_sm *sm, int id, const struct eap_method *methods,
+ size_t count)
+{
+ struct wpabuf *resp;
+ int found = 0;
+ const struct eap_method *m;
+
+ wpa_printf(MSG_DEBUG, "EAP: Building expanded EAP-Nak");
+
+ /* RFC 3748 - 5.3.2: Expanded Nak */
+ resp = eap_msg_alloc(EAP_VENDOR_IETF, EAP_TYPE_EXPANDED,
+ 8 + 8 * (count + 1), EAP_CODE_RESPONSE, id);
+ if (resp == NULL)
+ return NULL;
+
+ wpabuf_put_be24(resp, EAP_VENDOR_IETF);
+ wpabuf_put_be32(resp, EAP_TYPE_NAK);
+
+ for (m = methods; m; m = m->next) {
+ if (sm->reqVendor == m->vendor &&
+ sm->reqVendorMethod == m->method)
+ continue; /* do not allow the current method again */
+ if (eap_allowed_method(sm, m->vendor, m->method)) {
+ wpa_printf(MSG_DEBUG, "EAP: allowed type: "
+ "vendor=%u method=%u",
+ m->vendor, m->method);
+ wpabuf_put_u8(resp, EAP_TYPE_EXPANDED);
+ wpabuf_put_be24(resp, m->vendor);
+ wpabuf_put_be32(resp, m->method);
+
+ found++;
+ }
+ }
+ if (!found) {
+ wpa_printf(MSG_DEBUG, "EAP: no more allowed methods");
+ wpabuf_put_u8(resp, EAP_TYPE_EXPANDED);
+ wpabuf_put_be24(resp, EAP_VENDOR_IETF);
+ wpabuf_put_be32(resp, EAP_TYPE_NONE);
+ }
+
+ eap_update_len(resp);
+
+ return resp;
+}
+
+
+static struct wpabuf * eap_sm_buildNak(struct eap_sm *sm, int id)
+{
+ struct wpabuf *resp;
+ u8 *start;
+ int found = 0, expanded_found = 0;
+ size_t count;
+ const struct eap_method *methods, *m;
+
+ wpa_printf(MSG_DEBUG, "EAP: Building EAP-Nak (requested type %u "
+ "vendor=%u method=%u not allowed)", sm->reqMethod,
+ sm->reqVendor, sm->reqVendorMethod);
+ methods = eap_peer_get_methods(&count);
+ if (methods == NULL)
+ return NULL;
+ if (sm->reqMethod == EAP_TYPE_EXPANDED)
+ return eap_sm_build_expanded_nak(sm, id, methods, count);
+
+ /* RFC 3748 - 5.3.1: Legacy Nak */
+ resp = eap_msg_alloc(EAP_VENDOR_IETF, EAP_TYPE_NAK,
+ sizeof(struct eap_hdr) + 1 + count + 1,
+ EAP_CODE_RESPONSE, id);
+ if (resp == NULL)
+ return NULL;
+
+ start = wpabuf_put(resp, 0);
+ for (m = methods; m; m = m->next) {
+ if (m->vendor == EAP_VENDOR_IETF && m->method == sm->reqMethod)
+ continue; /* do not allow the current method again */
+ if (eap_allowed_method(sm, m->vendor, m->method)) {
+ if (m->vendor != EAP_VENDOR_IETF) {
+ if (expanded_found)
+ continue;
+ expanded_found = 1;
+ wpabuf_put_u8(resp, EAP_TYPE_EXPANDED);
+ } else
+ wpabuf_put_u8(resp, m->method);
+ found++;
+ }
+ }
+ if (!found)
+ wpabuf_put_u8(resp, EAP_TYPE_NONE);
+ wpa_hexdump(MSG_DEBUG, "EAP: allowed methods", start, found);
+
+ eap_update_len(resp);
+
+ return resp;
+}
+
+
+static void eap_sm_processIdentity(struct eap_sm *sm, const struct wpabuf *req)
+{
+ const struct eap_hdr *hdr = wpabuf_head(req);
+ const u8 *pos = (const u8 *) (hdr + 1);
+ pos++;
+
+ wpa_msg(sm->msg_ctx, MSG_INFO, WPA_EVENT_EAP_STARTED
+ "EAP authentication started");
+
+ /*
+ * RFC 3748 - 5.1: Identity
+ * Data field may contain a displayable message in UTF-8. If this
+ * includes NUL-character, only the data before that should be
+ * displayed. Some EAP implementasitons may piggy-back additional
+ * options after the NUL.
+ */
+ /* TODO: could save displayable message so that it can be shown to the
+ * user in case of interaction is required */
+ wpa_hexdump_ascii(MSG_DEBUG, "EAP: EAP-Request Identity data",
+ pos, be_to_host16(hdr->length) - 5);
+}
+
+
+#ifdef PCSC_FUNCS
+static int eap_sm_imsi_identity(struct eap_sm *sm,
+ struct eap_peer_config *conf)
+{
+ int aka = 0;
+ char imsi[100];
+ size_t imsi_len;
+ struct eap_method_type *m = conf->eap_methods;
+ int i;
+
+ imsi_len = sizeof(imsi);
+ if (scard_get_imsi(sm->scard_ctx, imsi, &imsi_len)) {
+ wpa_printf(MSG_WARNING, "Failed to get IMSI from SIM");
+ return -1;
+ }
+
+ wpa_hexdump_ascii(MSG_DEBUG, "IMSI", (u8 *) imsi, imsi_len);
+
+ for (i = 0; m && (m[i].vendor != EAP_VENDOR_IETF ||
+ m[i].method != EAP_TYPE_NONE); i++) {
+ if (m[i].vendor == EAP_VENDOR_IETF &&
+ m[i].method == EAP_TYPE_AKA) {
+ aka = 1;
+ break;
+ }
+ }
+
+ os_free(conf->identity);
+ conf->identity = os_malloc(1 + imsi_len);
+ if (conf->identity == NULL) {
+ wpa_printf(MSG_WARNING, "Failed to allocate buffer for "
+ "IMSI-based identity");
+ return -1;
+ }
+
+ conf->identity[0] = aka ? '0' : '1';
+ os_memcpy(conf->identity + 1, imsi, imsi_len);
+ conf->identity_len = 1 + imsi_len;
+
+ return 0;
+}
+#endif /* PCSC_FUNCS */
+
+
+static int eap_sm_set_scard_pin(struct eap_sm *sm,
+ struct eap_peer_config *conf)
+{
+#ifdef PCSC_FUNCS
+ if (scard_set_pin(sm->scard_ctx, conf->pin)) {
+ /*
+ * Make sure the same PIN is not tried again in order to avoid
+ * blocking SIM.
+ */
+ os_free(conf->pin);
+ conf->pin = NULL;
+
+ wpa_printf(MSG_WARNING, "PIN validation failed");
+ eap_sm_request_pin(sm);
+ return -1;
+ }
+ return 0;
+#else /* PCSC_FUNCS */
+ return -1;
+#endif /* PCSC_FUNCS */
+}
+
+static int eap_sm_get_scard_identity(struct eap_sm *sm,
+ struct eap_peer_config *conf)
+{
+#ifdef PCSC_FUNCS
+ if (eap_sm_set_scard_pin(sm, conf))
+ return -1;
+
+ return eap_sm_imsi_identity(sm, conf);
+#else /* PCSC_FUNCS */
+ return -1;
+#endif /* PCSC_FUNCS */
+}
+
+
+/**
+ * eap_sm_buildIdentity - Build EAP-Identity/Response for the current network
+ * @sm: Pointer to EAP state machine allocated with eap_peer_sm_init()
+ * @id: EAP identifier for the packet
+ * @encrypted: Whether the packet is for encrypted tunnel (EAP phase 2)
+ * Returns: Pointer to the allocated EAP-Identity/Response packet or %NULL on
+ * failure
+ *
+ * This function allocates and builds an EAP-Identity/Response packet for the
+ * current network. The caller is responsible for freeing the returned data.
+ */
+struct wpabuf * eap_sm_buildIdentity(struct eap_sm *sm, int id, int encrypted)
+{
+ struct eap_peer_config *config = eap_get_config(sm);
+ struct wpabuf *resp;
+ const u8 *identity;
+ size_t identity_len;
+
+ if (config == NULL) {
+ wpa_printf(MSG_WARNING, "EAP: buildIdentity: configuration "
+ "was not available");
+ return NULL;
+ }
+
+ if (sm->m && sm->m->get_identity &&
+ (identity = sm->m->get_identity(sm, sm->eap_method_priv,
+ &identity_len)) != NULL) {
+ wpa_hexdump_ascii(MSG_DEBUG, "EAP: using method re-auth "
+ "identity", identity, identity_len);
+ } else if (!encrypted && config->anonymous_identity) {
+ identity = config->anonymous_identity;
+ identity_len = config->anonymous_identity_len;
+ wpa_hexdump_ascii(MSG_DEBUG, "EAP: using anonymous identity",
+ identity, identity_len);
+ } else {
+ identity = config->identity;
+ identity_len = config->identity_len;
+ wpa_hexdump_ascii(MSG_DEBUG, "EAP: using real identity",
+ identity, identity_len);
+ }
+
+ if (identity == NULL) {
+ wpa_printf(MSG_WARNING, "EAP: buildIdentity: identity "
+ "configuration was not available");
+ if (config->pcsc) {
+ if (eap_sm_get_scard_identity(sm, config) < 0)
+ return NULL;
+ identity = config->identity;
+ identity_len = config->identity_len;
+ wpa_hexdump_ascii(MSG_DEBUG, "permanent identity from "
+ "IMSI", identity, identity_len);
+ } else {
+ eap_sm_request_identity(sm);
+ return NULL;
+ }
+ } else if (config->pcsc) {
+ if (eap_sm_set_scard_pin(sm, config) < 0)
+ return NULL;
+ }
+
+ resp = eap_msg_alloc(EAP_VENDOR_IETF, EAP_TYPE_IDENTITY, identity_len,
+ EAP_CODE_RESPONSE, id);
+ if (resp == NULL)
+ return NULL;
+
+ wpabuf_put_data(resp, identity, identity_len);
+
+ return resp;
+}
+
+
+static void eap_sm_processNotify(struct eap_sm *sm, const struct wpabuf *req)
+{
+ const u8 *pos;
+ char *msg;
+ size_t i, msg_len;
+
+ pos = eap_hdr_validate(EAP_VENDOR_IETF, EAP_TYPE_NOTIFICATION, req,
+ &msg_len);
+ if (pos == NULL)
+ return;
+ wpa_hexdump_ascii(MSG_DEBUG, "EAP: EAP-Request Notification data",
+ pos, msg_len);
+
+ msg = os_malloc(msg_len + 1);
+ if (msg == NULL)
+ return;
+ for (i = 0; i < msg_len; i++)
+ msg[i] = isprint(pos[i]) ? (char) pos[i] : '_';
+ msg[msg_len] = '\0';
+ wpa_msg(sm->msg_ctx, MSG_INFO, "%s%s",
+ WPA_EVENT_EAP_NOTIFICATION, msg);
+ os_free(msg);
+}
+
+
+static struct wpabuf * eap_sm_buildNotify(int id)
+{
+ struct wpabuf *resp;
+
+ wpa_printf(MSG_DEBUG, "EAP: Generating EAP-Response Notification");
+ resp = eap_msg_alloc(EAP_VENDOR_IETF, EAP_TYPE_NOTIFICATION, 0,
+ EAP_CODE_RESPONSE, id);
+ if (resp == NULL)
+ return NULL;
+
+ return resp;
+}
+
+
+static void eap_sm_parseEapReq(struct eap_sm *sm, const struct wpabuf *req)
+{
+ const struct eap_hdr *hdr;
+ size_t plen;
+ const u8 *pos;
+
+ sm->rxReq = sm->rxResp = sm->rxSuccess = sm->rxFailure = FALSE;
+ sm->reqId = 0;
+ sm->reqMethod = EAP_TYPE_NONE;
+ sm->reqVendor = EAP_VENDOR_IETF;
+ sm->reqVendorMethod = EAP_TYPE_NONE;
+
+ if (req == NULL || wpabuf_len(req) < sizeof(*hdr))
+ return;
+
+ hdr = wpabuf_head(req);
+ plen = be_to_host16(hdr->length);
+ if (plen > wpabuf_len(req)) {
+ wpa_printf(MSG_DEBUG, "EAP: Ignored truncated EAP-Packet "
+ "(len=%lu plen=%lu)",
+ (unsigned long) wpabuf_len(req),
+ (unsigned long) plen);
+ return;
+ }
+
+ sm->reqId = hdr->identifier;
+
+ if (sm->workaround) {
+ const u8 *addr[1];
+ addr[0] = wpabuf_head(req);
+ md5_vector(1, addr, &plen, sm->req_md5);
+ }
+
+ switch (hdr->code) {
+ case EAP_CODE_REQUEST:
+ if (plen < sizeof(*hdr) + 1) {
+ wpa_printf(MSG_DEBUG, "EAP: Too short EAP-Request - "
+ "no Type field");
+ return;
+ }
+ sm->rxReq = TRUE;
+ pos = (const u8 *) (hdr + 1);
+ sm->reqMethod = *pos++;
+ if (sm->reqMethod == EAP_TYPE_EXPANDED) {
+ if (plen < sizeof(*hdr) + 8) {
+ wpa_printf(MSG_DEBUG, "EAP: Ignored truncated "
+ "expanded EAP-Packet (plen=%lu)",
+ (unsigned long) plen);
+ return;
+ }
+ sm->reqVendor = WPA_GET_BE24(pos);
+ pos += 3;
+ sm->reqVendorMethod = WPA_GET_BE32(pos);
+ }
+ wpa_printf(MSG_DEBUG, "EAP: Received EAP-Request id=%d "
+ "method=%u vendor=%u vendorMethod=%u",
+ sm->reqId, sm->reqMethod, sm->reqVendor,
+ sm->reqVendorMethod);
+ break;
+ case EAP_CODE_RESPONSE:
+ if (sm->selectedMethod == EAP_TYPE_LEAP) {
+ /*
+ * LEAP differs from RFC 4137 by using reversed roles
+ * for mutual authentication and because of this, we
+ * need to accept EAP-Response frames if LEAP is used.
+ */
+ if (plen < sizeof(*hdr) + 1) {
+ wpa_printf(MSG_DEBUG, "EAP: Too short "
+ "EAP-Response - no Type field");
+ return;
+ }
+ sm->rxResp = TRUE;
+ pos = (const u8 *) (hdr + 1);
+ sm->reqMethod = *pos;
+ wpa_printf(MSG_DEBUG, "EAP: Received EAP-Response for "
+ "LEAP method=%d id=%d",
+ sm->reqMethod, sm->reqId);
+ break;
+ }
+ wpa_printf(MSG_DEBUG, "EAP: Ignored EAP-Response");
+ break;
+ case EAP_CODE_SUCCESS:
+ wpa_printf(MSG_DEBUG, "EAP: Received EAP-Success");
+ sm->rxSuccess = TRUE;
+ break;
+ case EAP_CODE_FAILURE:
+ wpa_printf(MSG_DEBUG, "EAP: Received EAP-Failure");
+ sm->rxFailure = TRUE;
+ break;
+ default:
+ wpa_printf(MSG_DEBUG, "EAP: Ignored EAP-Packet with unknown "
+ "code %d", hdr->code);
+ break;
+ }
+}
+
+
+static void eap_peer_sm_tls_event(void *ctx, enum tls_event ev,
+ union tls_event_data *data)
+{
+ struct eap_sm *sm = ctx;
+ char *hash_hex = NULL;
+ char *cert_hex = NULL;
+
+ switch (ev) {
+ case TLS_CERT_CHAIN_FAILURE:
+ wpa_msg(sm->msg_ctx, MSG_INFO, WPA_EVENT_EAP_TLS_CERT_ERROR
+ "reason=%d depth=%d subject='%s' err='%s'",
+ data->cert_fail.reason,
+ data->cert_fail.depth,
+ data->cert_fail.subject,
+ data->cert_fail.reason_txt);
+ break;
+ case TLS_PEER_CERTIFICATE:
+ if (data->peer_cert.hash) {
+ size_t len = data->peer_cert.hash_len * 2 + 1;
+ hash_hex = os_malloc(len);
+ if (hash_hex) {
+ wpa_snprintf_hex(hash_hex, len,
+ data->peer_cert.hash,
+ data->peer_cert.hash_len);
+ }
+ }
+ wpa_msg(sm->msg_ctx, MSG_INFO, WPA_EVENT_EAP_PEER_CERT
+ "depth=%d subject='%s'%s%s",
+ data->peer_cert.depth, data->peer_cert.subject,
+ hash_hex ? " hash=" : "", hash_hex ? hash_hex : "");
+
+ if (data->peer_cert.cert) {
+ size_t len = wpabuf_len(data->peer_cert.cert) * 2 + 1;
+ cert_hex = os_malloc(len);
+ if (cert_hex == NULL)
+ break;
+ wpa_snprintf_hex(cert_hex, len,
+ wpabuf_head(data->peer_cert.cert),
+ wpabuf_len(data->peer_cert.cert));
+ wpa_msg_ctrl(sm->msg_ctx, MSG_INFO,
+ WPA_EVENT_EAP_PEER_CERT
+ "depth=%d subject='%s' cert=%s",
+ data->peer_cert.depth,
+ data->peer_cert.subject,
+ cert_hex);
+ }
+ break;
+ }
+
+ os_free(hash_hex);
+ os_free(cert_hex);
+}
+
+
+/**
+ * eap_peer_sm_init - Allocate and initialize EAP peer state machine
+ * @eapol_ctx: Context data to be used with eapol_cb calls
+ * @eapol_cb: Pointer to EAPOL callback functions
+ * @msg_ctx: Context data for wpa_msg() calls
+ * @conf: EAP configuration
+ * Returns: Pointer to the allocated EAP state machine or %NULL on failure
+ *
+ * This function allocates and initializes an EAP state machine. In addition,
+ * this initializes TLS library for the new EAP state machine. eapol_cb pointer
+ * will be in use until eap_peer_sm_deinit() is used to deinitialize this EAP
+ * state machine. Consequently, the caller must make sure that this data
+ * structure remains alive while the EAP state machine is active.
+ */
+struct eap_sm * eap_peer_sm_init(void *eapol_ctx,
+ struct eapol_callbacks *eapol_cb,
+ void *msg_ctx, struct eap_config *conf)
+{
+ struct eap_sm *sm;
+ struct tls_config tlsconf;
+
+ sm = os_zalloc(sizeof(*sm));
+ if (sm == NULL)
+ return NULL;
+ sm->eapol_ctx = eapol_ctx;
+ sm->eapol_cb = eapol_cb;
+ sm->msg_ctx = msg_ctx;
+ sm->ClientTimeout = EAP_CLIENT_TIMEOUT_DEFAULT;
+ sm->wps = conf->wps;
+
+ os_memset(&tlsconf, 0, sizeof(tlsconf));
+ tlsconf.opensc_engine_path = conf->opensc_engine_path;
+ tlsconf.pkcs11_engine_path = conf->pkcs11_engine_path;
+ tlsconf.pkcs11_module_path = conf->pkcs11_module_path;
+#ifdef CONFIG_FIPS
+ tlsconf.fips_mode = 1;
+#endif /* CONFIG_FIPS */
+ tlsconf.event_cb = eap_peer_sm_tls_event;
+ tlsconf.cb_ctx = sm;
+ sm->ssl_ctx = tls_init(&tlsconf);
+ if (sm->ssl_ctx == NULL) {
+ wpa_printf(MSG_WARNING, "SSL: Failed to initialize TLS "
+ "context.");
+ os_free(sm);
+ return NULL;
+ }
+
+ return sm;
+}
+
+
+/**
+ * eap_peer_sm_deinit - Deinitialize and free an EAP peer state machine
+ * @sm: Pointer to EAP state machine allocated with eap_peer_sm_init()
+ *
+ * This function deinitializes EAP state machine and frees all allocated
+ * resources.
+ */
+void eap_peer_sm_deinit(struct eap_sm *sm)
+{
+ if (sm == NULL)
+ return;
+ eap_deinit_prev_method(sm, "EAP deinit");
+ eap_sm_abort(sm);
+ tls_deinit(sm->ssl_ctx);
+ os_free(sm);
+}
+
+
+/**
+ * eap_peer_sm_step - Step EAP peer state machine
+ * @sm: Pointer to EAP state machine allocated with eap_peer_sm_init()
+ * Returns: 1 if EAP state was changed or 0 if not
+ *
+ * This function advances EAP state machine to a new state to match with the
+ * current variables. This should be called whenever variables used by the EAP
+ * state machine have changed.
+ */
+int eap_peer_sm_step(struct eap_sm *sm)
+{
+ int res = 0;
+ do {
+ sm->changed = FALSE;
+ SM_STEP_RUN(EAP);
+ if (sm->changed)
+ res = 1;
+ } while (sm->changed);
+ return res;
+}
+
+
+/**
+ * eap_sm_abort - Abort EAP authentication
+ * @sm: Pointer to EAP state machine allocated with eap_peer_sm_init()
+ *
+ * Release system resources that have been allocated for the authentication
+ * session without fully deinitializing the EAP state machine.
+ */
+void eap_sm_abort(struct eap_sm *sm)
+{
+ wpabuf_free(sm->lastRespData);
+ sm->lastRespData = NULL;
+ wpabuf_free(sm->eapRespData);
+ sm->eapRespData = NULL;
+ os_free(sm->eapKeyData);
+ sm->eapKeyData = NULL;
+
+ /* This is not clearly specified in the EAP statemachines draft, but
+ * it seems necessary to make sure that some of the EAPOL variables get
+ * cleared for the next authentication. */
+ eapol_set_bool(sm, EAPOL_eapSuccess, FALSE);
+}
+
+
+#ifdef CONFIG_CTRL_IFACE
+static const char * eap_sm_state_txt(int state)
+{
+ switch (state) {
+ case EAP_INITIALIZE:
+ return "INITIALIZE";
+ case EAP_DISABLED:
+ return "DISABLED";
+ case EAP_IDLE:
+ return "IDLE";
+ case EAP_RECEIVED:
+ return "RECEIVED";
+ case EAP_GET_METHOD:
+ return "GET_METHOD";
+ case EAP_METHOD:
+ return "METHOD";
+ case EAP_SEND_RESPONSE:
+ return "SEND_RESPONSE";
+ case EAP_DISCARD:
+ return "DISCARD";
+ case EAP_IDENTITY:
+ return "IDENTITY";
+ case EAP_NOTIFICATION:
+ return "NOTIFICATION";
+ case EAP_RETRANSMIT:
+ return "RETRANSMIT";
+ case EAP_SUCCESS:
+ return "SUCCESS";
+ case EAP_FAILURE:
+ return "FAILURE";
+ default:
+ return "UNKNOWN";
+ }
+}
+#endif /* CONFIG_CTRL_IFACE */
+
+
+#if defined(CONFIG_CTRL_IFACE) || !defined(CONFIG_NO_STDOUT_DEBUG)
+static const char * eap_sm_method_state_txt(EapMethodState state)
+{
+ switch (state) {
+ case METHOD_NONE:
+ return "NONE";
+ case METHOD_INIT:
+ return "INIT";
+ case METHOD_CONT:
+ return "CONT";
+ case METHOD_MAY_CONT:
+ return "MAY_CONT";
+ case METHOD_DONE:
+ return "DONE";
+ default:
+ return "UNKNOWN";
+ }
+}
+
+
+static const char * eap_sm_decision_txt(EapDecision decision)
+{
+ switch (decision) {
+ case DECISION_FAIL:
+ return "FAIL";
+ case DECISION_COND_SUCC:
+ return "COND_SUCC";
+ case DECISION_UNCOND_SUCC:
+ return "UNCOND_SUCC";
+ default:
+ return "UNKNOWN";
+ }
+}
+#endif /* CONFIG_CTRL_IFACE || !CONFIG_NO_STDOUT_DEBUG */
+
+
+#ifdef CONFIG_CTRL_IFACE
+
+/**
+ * eap_sm_get_status - Get EAP state machine status
+ * @sm: Pointer to EAP state machine allocated with eap_peer_sm_init()
+ * @buf: Buffer for status information
+ * @buflen: Maximum buffer length
+ * @verbose: Whether to include verbose status information
+ * Returns: Number of bytes written to buf.
+ *
+ * Query EAP state machine for status information. This function fills in a
+ * text area with current status information from the EAPOL state machine. If
+ * the buffer (buf) is not large enough, status information will be truncated
+ * to fit the buffer.
+ */
+int eap_sm_get_status(struct eap_sm *sm, char *buf, size_t buflen, int verbose)
+{
+ int len, ret;
+
+ if (sm == NULL)
+ return 0;
+
+ len = os_snprintf(buf, buflen,
+ "EAP state=%s\n",
+ eap_sm_state_txt(sm->EAP_state));
+ if (len < 0 || (size_t) len >= buflen)
+ return 0;
+
+ if (sm->selectedMethod != EAP_TYPE_NONE) {
+ const char *name;
+ if (sm->m) {
+ name = sm->m->name;
+ } else {
+ const struct eap_method *m =
+ eap_peer_get_eap_method(EAP_VENDOR_IETF,
+ sm->selectedMethod);
+ if (m)
+ name = m->name;
+ else
+ name = "?";
+ }
+ ret = os_snprintf(buf + len, buflen - len,
+ "selectedMethod=%d (EAP-%s)\n",
+ sm->selectedMethod, name);
+ if (ret < 0 || (size_t) ret >= buflen - len)
+ return len;
+ len += ret;
+
+ if (sm->m && sm->m->get_status) {
+ len += sm->m->get_status(sm, sm->eap_method_priv,
+ buf + len, buflen - len,
+ verbose);
+ }
+ }
+
+ if (verbose) {
+ ret = os_snprintf(buf + len, buflen - len,
+ "reqMethod=%d\n"
+ "methodState=%s\n"
+ "decision=%s\n"
+ "ClientTimeout=%d\n",
+ sm->reqMethod,
+ eap_sm_method_state_txt(sm->methodState),
+ eap_sm_decision_txt(sm->decision),
+ sm->ClientTimeout);
+ if (ret < 0 || (size_t) ret >= buflen - len)
+ return len;
+ len += ret;
+ }
+
+ return len;
+}
+#endif /* CONFIG_CTRL_IFACE */
+
+
+#if defined(CONFIG_CTRL_IFACE) || !defined(CONFIG_NO_STDOUT_DEBUG)
+typedef enum {
+ TYPE_IDENTITY, TYPE_PASSWORD, TYPE_OTP, TYPE_PIN, TYPE_NEW_PASSWORD,
+ TYPE_PASSPHRASE
+} eap_ctrl_req_type;
+
+static void eap_sm_request(struct eap_sm *sm, eap_ctrl_req_type type,
+ const char *msg, size_t msglen)
+{
+ struct eap_peer_config *config;
+ char *field, *txt, *tmp;
+
+ if (sm == NULL)
+ return;
+ config = eap_get_config(sm);
+ if (config == NULL)
+ return;
+
+ switch (type) {
+ case TYPE_IDENTITY:
+ field = "IDENTITY";
+ txt = "Identity";
+ config->pending_req_identity++;
+ break;
+ case TYPE_PASSWORD:
+ field = "PASSWORD";
+ txt = "Password";
+ config->pending_req_password++;
+ break;
+ case TYPE_NEW_PASSWORD:
+ field = "NEW_PASSWORD";
+ txt = "New Password";
+ config->pending_req_new_password++;
+ break;
+ case TYPE_PIN:
+ field = "PIN";
+ txt = "PIN";
+ config->pending_req_pin++;
+ break;
+ case TYPE_OTP:
+ field = "OTP";
+ if (msg) {
+ tmp = os_malloc(msglen + 3);
+ if (tmp == NULL)
+ return;
+ tmp[0] = '[';
+ os_memcpy(tmp + 1, msg, msglen);
+ tmp[msglen + 1] = ']';
+ tmp[msglen + 2] = '\0';
+ txt = tmp;
+ os_free(config->pending_req_otp);
+ config->pending_req_otp = tmp;
+ config->pending_req_otp_len = msglen + 3;
+ } else {
+ if (config->pending_req_otp == NULL)
+ return;
+ txt = config->pending_req_otp;
+ }
+ break;
+ case TYPE_PASSPHRASE:
+ field = "PASSPHRASE";
+ txt = "Private key passphrase";
+ config->pending_req_passphrase++;
+ break;
+ default:
+ return;
+ }
+
+ if (sm->eapol_cb->eap_param_needed)
+ sm->eapol_cb->eap_param_needed(sm->eapol_ctx, field, txt);
+}
+#else /* CONFIG_CTRL_IFACE || !CONFIG_NO_STDOUT_DEBUG */
+#define eap_sm_request(sm, type, msg, msglen) do { } while (0)
+#endif /* CONFIG_CTRL_IFACE || !CONFIG_NO_STDOUT_DEBUG */
+
+const char * eap_sm_get_method_name(struct eap_sm *sm)
+{
+ if (sm->m == NULL)
+ return "UNKNOWN";
+ return sm->m->name;
+}
+
+
+/**
+ * eap_sm_request_identity - Request identity from user (ctrl_iface)
+ * @sm: Pointer to EAP state machine allocated with eap_peer_sm_init()
+ *
+ * EAP methods can call this function to request identity information for the
+ * current network. This is normally called when the identity is not included
+ * in the network configuration. The request will be sent to monitor programs
+ * through the control interface.
+ */
+void eap_sm_request_identity(struct eap_sm *sm)
+{
+ eap_sm_request(sm, TYPE_IDENTITY, NULL, 0);
+}
+
+
+/**
+ * eap_sm_request_password - Request password from user (ctrl_iface)
+ * @sm: Pointer to EAP state machine allocated with eap_peer_sm_init()
+ *
+ * EAP methods can call this function to request password information for the
+ * current network. This is normally called when the password is not included
+ * in the network configuration. The request will be sent to monitor programs
+ * through the control interface.
+ */
+void eap_sm_request_password(struct eap_sm *sm)
+{
+ eap_sm_request(sm, TYPE_PASSWORD, NULL, 0);
+}
+
+
+/**
+ * eap_sm_request_new_password - Request new password from user (ctrl_iface)
+ * @sm: Pointer to EAP state machine allocated with eap_peer_sm_init()
+ *
+ * EAP methods can call this function to request new password information for
+ * the current network. This is normally called when the EAP method indicates
+ * that the current password has expired and password change is required. The
+ * request will be sent to monitor programs through the control interface.
+ */
+void eap_sm_request_new_password(struct eap_sm *sm)
+{
+ eap_sm_request(sm, TYPE_NEW_PASSWORD, NULL, 0);
+}
+
+
+/**
+ * eap_sm_request_pin - Request SIM or smart card PIN from user (ctrl_iface)
+ * @sm: Pointer to EAP state machine allocated with eap_peer_sm_init()
+ *
+ * EAP methods can call this function to request SIM or smart card PIN
+ * information for the current network. This is normally called when the PIN is
+ * not included in the network configuration. The request will be sent to
+ * monitor programs through the control interface.
+ */
+void eap_sm_request_pin(struct eap_sm *sm)
+{
+ eap_sm_request(sm, TYPE_PIN, NULL, 0);
+}
+
+
+/**
+ * eap_sm_request_otp - Request one time password from user (ctrl_iface)
+ * @sm: Pointer to EAP state machine allocated with eap_peer_sm_init()
+ * @msg: Message to be displayed to the user when asking for OTP
+ * @msg_len: Length of the user displayable message
+ *
+ * EAP methods can call this function to request open time password (OTP) for
+ * the current network. The request will be sent to monitor programs through
+ * the control interface.
+ */
+void eap_sm_request_otp(struct eap_sm *sm, const char *msg, size_t msg_len)
+{
+ eap_sm_request(sm, TYPE_OTP, msg, msg_len);
+}
+
+
+/**
+ * eap_sm_request_passphrase - Request passphrase from user (ctrl_iface)
+ * @sm: Pointer to EAP state machine allocated with eap_peer_sm_init()
+ *
+ * EAP methods can call this function to request passphrase for a private key
+ * for the current network. This is normally called when the passphrase is not
+ * included in the network configuration. The request will be sent to monitor
+ * programs through the control interface.
+ */
+void eap_sm_request_passphrase(struct eap_sm *sm)
+{
+ eap_sm_request(sm, TYPE_PASSPHRASE, NULL, 0);
+}
+
+
+/**
+ * eap_sm_notify_ctrl_attached - Notification of attached monitor
+ * @sm: Pointer to EAP state machine allocated with eap_peer_sm_init()
+ *
+ * Notify EAP state machines that a monitor was attached to the control
+ * interface to trigger re-sending of pending requests for user input.
+ */
+void eap_sm_notify_ctrl_attached(struct eap_sm *sm)
+{
+ struct eap_peer_config *config = eap_get_config(sm);
+
+ if (config == NULL)
+ return;
+
+ /* Re-send any pending requests for user data since a new control
+ * interface was added. This handles cases where the EAP authentication
+ * starts immediately after system startup when the user interface is
+ * not yet running. */
+ if (config->pending_req_identity)
+ eap_sm_request_identity(sm);
+ if (config->pending_req_password)
+ eap_sm_request_password(sm);
+ if (config->pending_req_new_password)
+ eap_sm_request_new_password(sm);
+ if (config->pending_req_otp)
+ eap_sm_request_otp(sm, NULL, 0);
+ if (config->pending_req_pin)
+ eap_sm_request_pin(sm);
+ if (config->pending_req_passphrase)
+ eap_sm_request_passphrase(sm);
+}
+
+
+static int eap_allowed_phase2_type(int vendor, int type)
+{
+ if (vendor != EAP_VENDOR_IETF)
+ return 0;
+ return type != EAP_TYPE_PEAP && type != EAP_TYPE_TTLS &&
+ type != EAP_TYPE_FAST;
+}
+
+
+/**
+ * eap_get_phase2_type - Get EAP type for the given EAP phase 2 method name
+ * @name: EAP method name, e.g., MD5
+ * @vendor: Buffer for returning EAP Vendor-Id
+ * Returns: EAP method type or %EAP_TYPE_NONE if not found
+ *
+ * This function maps EAP type names into EAP type numbers that are allowed for
+ * Phase 2, i.e., for tunneled authentication. Phase 2 is used, e.g., with
+ * EAP-PEAP, EAP-TTLS, and EAP-FAST.
+ */
+u32 eap_get_phase2_type(const char *name, int *vendor)
+{
+ int v;
+ u8 type = eap_peer_get_type(name, &v);
+ if (eap_allowed_phase2_type(v, type)) {
+ *vendor = v;
+ return type;
+ }
+ *vendor = EAP_VENDOR_IETF;
+ return EAP_TYPE_NONE;
+}
+
+
+/**
+ * eap_get_phase2_types - Get list of allowed EAP phase 2 types
+ * @config: Pointer to a network configuration
+ * @count: Pointer to a variable to be filled with number of returned EAP types
+ * Returns: Pointer to allocated type list or %NULL on failure
+ *
+ * This function generates an array of allowed EAP phase 2 (tunneled) types for
+ * the given network configuration.
+ */
+struct eap_method_type * eap_get_phase2_types(struct eap_peer_config *config,
+ size_t *count)
+{
+ struct eap_method_type *buf;
+ u32 method;
+ int vendor;
+ size_t mcount;
+ const struct eap_method *methods, *m;
+
+ methods = eap_peer_get_methods(&mcount);
+ if (methods == NULL)
+ return NULL;
+ *count = 0;
+ buf = os_malloc(mcount * sizeof(struct eap_method_type));
+ if (buf == NULL)
+ return NULL;
+
+ for (m = methods; m; m = m->next) {
+ vendor = m->vendor;
+ method = m->method;
+ if (eap_allowed_phase2_type(vendor, method)) {
+ if (vendor == EAP_VENDOR_IETF &&
+ method == EAP_TYPE_TLS && config &&
+ config->private_key2 == NULL)
+ continue;
+ buf[*count].vendor = vendor;
+ buf[*count].method = method;
+ (*count)++;
+ }
+ }
+
+ return buf;
+}
+
+
+/**
+ * eap_set_fast_reauth - Update fast_reauth setting
+ * @sm: Pointer to EAP state machine allocated with eap_peer_sm_init()
+ * @enabled: 1 = Fast reauthentication is enabled, 0 = Disabled
+ */
+void eap_set_fast_reauth(struct eap_sm *sm, int enabled)
+{
+ sm->fast_reauth = enabled;
+}
+
+
+/**
+ * eap_set_workaround - Update EAP workarounds setting
+ * @sm: Pointer to EAP state machine allocated with eap_peer_sm_init()
+ * @workaround: 1 = Enable EAP workarounds, 0 = Disable EAP workarounds
+ */
+void eap_set_workaround(struct eap_sm *sm, unsigned int workaround)
+{
+ sm->workaround = workaround;
+}
+
+
+/**
+ * eap_get_config - Get current network configuration
+ * @sm: Pointer to EAP state machine allocated with eap_peer_sm_init()
+ * Returns: Pointer to the current network configuration or %NULL if not found
+ *
+ * EAP peer methods should avoid using this function if they can use other
+ * access functions, like eap_get_config_identity() and
+ * eap_get_config_password(), that do not require direct access to
+ * struct eap_peer_config.
+ */
+struct eap_peer_config * eap_get_config(struct eap_sm *sm)
+{
+ return sm->eapol_cb->get_config(sm->eapol_ctx);
+}
+
+
+/**
+ * eap_get_config_identity - Get identity from the network configuration
+ * @sm: Pointer to EAP state machine allocated with eap_peer_sm_init()
+ * @len: Buffer for the length of the identity
+ * Returns: Pointer to the identity or %NULL if not found
+ */
+const u8 * eap_get_config_identity(struct eap_sm *sm, size_t *len)
+{
+ struct eap_peer_config *config = eap_get_config(sm);
+ if (config == NULL)
+ return NULL;
+ *len = config->identity_len;
+ return config->identity;
+}
+
+
+/**
+ * eap_get_config_password - Get password from the network configuration
+ * @sm: Pointer to EAP state machine allocated with eap_peer_sm_init()
+ * @len: Buffer for the length of the password
+ * Returns: Pointer to the password or %NULL if not found
+ */
+const u8 * eap_get_config_password(struct eap_sm *sm, size_t *len)
+{
+ struct eap_peer_config *config = eap_get_config(sm);
+ if (config == NULL)
+ return NULL;
+ *len = config->password_len;
+ return config->password;
+}
+
+
+/**
+ * eap_get_config_password2 - Get password from the network configuration
+ * @sm: Pointer to EAP state machine allocated with eap_peer_sm_init()
+ * @len: Buffer for the length of the password
+ * @hash: Buffer for returning whether the password is stored as a
+ * NtPasswordHash instead of plaintext password; can be %NULL if this
+ * information is not needed
+ * Returns: Pointer to the password or %NULL if not found
+ */
+const u8 * eap_get_config_password2(struct eap_sm *sm, size_t *len, int *hash)
+{
+ struct eap_peer_config *config = eap_get_config(sm);
+ if (config == NULL)
+ return NULL;
+ *len = config->password_len;
+ if (hash)
+ *hash = !!(config->flags & EAP_CONFIG_FLAGS_PASSWORD_NTHASH);
+ return config->password;
+}
+
+
+/**
+ * eap_get_config_new_password - Get new password from network configuration
+ * @sm: Pointer to EAP state machine allocated with eap_peer_sm_init()
+ * @len: Buffer for the length of the new password
+ * Returns: Pointer to the new password or %NULL if not found
+ */
+const u8 * eap_get_config_new_password(struct eap_sm *sm, size_t *len)
+{
+ struct eap_peer_config *config = eap_get_config(sm);
+ if (config == NULL)
+ return NULL;
+ *len = config->new_password_len;
+ return config->new_password;
+}
+
+
+/**
+ * eap_get_config_otp - Get one-time password from the network configuration
+ * @sm: Pointer to EAP state machine allocated with eap_peer_sm_init()
+ * @len: Buffer for the length of the one-time password
+ * Returns: Pointer to the one-time password or %NULL if not found
+ */
+const u8 * eap_get_config_otp(struct eap_sm *sm, size_t *len)
+{
+ struct eap_peer_config *config = eap_get_config(sm);
+ if (config == NULL)
+ return NULL;
+ *len = config->otp_len;
+ return config->otp;
+}
+
+
+/**
+ * eap_clear_config_otp - Clear used one-time password
+ * @sm: Pointer to EAP state machine allocated with eap_peer_sm_init()
+ *
+ * This function clears a used one-time password (OTP) from the current network
+ * configuration. This should be called when the OTP has been used and is not
+ * needed anymore.
+ */
+void eap_clear_config_otp(struct eap_sm *sm)
+{
+ struct eap_peer_config *config = eap_get_config(sm);
+ if (config == NULL)
+ return;
+ os_memset(config->otp, 0, config->otp_len);
+ os_free(config->otp);
+ config->otp = NULL;
+ config->otp_len = 0;
+}
+
+
+/**
+ * eap_get_config_phase1 - Get phase1 data from the network configuration
+ * @sm: Pointer to EAP state machine allocated with eap_peer_sm_init()
+ * Returns: Pointer to the phase1 data or %NULL if not found
+ */
+const char * eap_get_config_phase1(struct eap_sm *sm)
+{
+ struct eap_peer_config *config = eap_get_config(sm);
+ if (config == NULL)
+ return NULL;
+ return config->phase1;
+}
+
+
+/**
+ * eap_get_config_phase2 - Get phase2 data from the network configuration
+ * @sm: Pointer to EAP state machine allocated with eap_peer_sm_init()
+ * Returns: Pointer to the phase1 data or %NULL if not found
+ */
+const char * eap_get_config_phase2(struct eap_sm *sm)
+{
+ struct eap_peer_config *config = eap_get_config(sm);
+ if (config == NULL)
+ return NULL;
+ return config->phase2;
+}
+
+
+int eap_get_config_fragment_size(struct eap_sm *sm)
+{
+ struct eap_peer_config *config = eap_get_config(sm);
+ if (config == NULL)
+ return -1;
+ return config->fragment_size;
+}
+
+
+/**
+ * eap_key_available - Get key availability (eapKeyAvailable variable)
+ * @sm: Pointer to EAP state machine allocated with eap_peer_sm_init()
+ * Returns: 1 if EAP keying material is available, 0 if not
+ */
+int eap_key_available(struct eap_sm *sm)
+{
+ return sm ? sm->eapKeyAvailable : 0;
+}
+
+
+/**
+ * eap_notify_success - Notify EAP state machine about external success trigger
+ * @sm: Pointer to EAP state machine allocated with eap_peer_sm_init()
+ *
+ * This function is called when external event, e.g., successful completion of
+ * WPA-PSK key handshake, is indicating that EAP state machine should move to
+ * success state. This is mainly used with security modes that do not use EAP
+ * state machine (e.g., WPA-PSK).
+ */
+void eap_notify_success(struct eap_sm *sm)
+{
+ if (sm) {
+ sm->decision = DECISION_COND_SUCC;
+ sm->EAP_state = EAP_SUCCESS;
+ }
+}
+
+
+/**
+ * eap_notify_lower_layer_success - Notification of lower layer success
+ * @sm: Pointer to EAP state machine allocated with eap_peer_sm_init()
+ *
+ * Notify EAP state machines that a lower layer has detected a successful
+ * authentication. This is used to recover from dropped EAP-Success messages.
+ */
+void eap_notify_lower_layer_success(struct eap_sm *sm)
+{
+ if (sm == NULL)
+ return;
+
+ if (eapol_get_bool(sm, EAPOL_eapSuccess) ||
+ sm->decision == DECISION_FAIL ||
+ (sm->methodState != METHOD_MAY_CONT &&
+ sm->methodState != METHOD_DONE))
+ return;
+
+ if (sm->eapKeyData != NULL)
+ sm->eapKeyAvailable = TRUE;
+ eapol_set_bool(sm, EAPOL_eapSuccess, TRUE);
+ wpa_msg(sm->msg_ctx, MSG_INFO, WPA_EVENT_EAP_SUCCESS
+ "EAP authentication completed successfully (based on lower "
+ "layer success)");
+}
+
+
+/**
+ * eap_get_eapKeyData - Get master session key (MSK) from EAP state machine
+ * @sm: Pointer to EAP state machine allocated with eap_peer_sm_init()
+ * @len: Pointer to variable that will be set to number of bytes in the key
+ * Returns: Pointer to the EAP keying data or %NULL on failure
+ *
+ * Fetch EAP keying material (MSK, eapKeyData) from the EAP state machine. The
+ * key is available only after a successful authentication. EAP state machine
+ * continues to manage the key data and the caller must not change or free the
+ * returned data.
+ */
+const u8 * eap_get_eapKeyData(struct eap_sm *sm, size_t *len)
+{
+ if (sm == NULL || sm->eapKeyData == NULL) {
+ *len = 0;
+ return NULL;
+ }
+
+ *len = sm->eapKeyDataLen;
+ return sm->eapKeyData;
+}
+
+
+/**
+ * eap_get_eapKeyData - Get EAP response data
+ * @sm: Pointer to EAP state machine allocated with eap_peer_sm_init()
+ * Returns: Pointer to the EAP response (eapRespData) or %NULL on failure
+ *
+ * Fetch EAP response (eapRespData) from the EAP state machine. This data is
+ * available when EAP state machine has processed an incoming EAP request. The
+ * EAP state machine does not maintain a reference to the response after this
+ * function is called and the caller is responsible for freeing the data.
+ */
+struct wpabuf * eap_get_eapRespData(struct eap_sm *sm)
+{
+ struct wpabuf *resp;
+
+ if (sm == NULL || sm->eapRespData == NULL)
+ return NULL;
+
+ resp = sm->eapRespData;
+ sm->eapRespData = NULL;
+
+ return resp;
+}
+
+
+/**
+ * eap_sm_register_scard_ctx - Notification of smart card context
+ * @sm: Pointer to EAP state machine allocated with eap_peer_sm_init()
+ * @ctx: Context data for smart card operations
+ *
+ * Notify EAP state machines of context data for smart card operations. This
+ * context data will be used as a parameter for scard_*() functions.
+ */
+void eap_register_scard_ctx(struct eap_sm *sm, void *ctx)
+{
+ if (sm)
+ sm->scard_ctx = ctx;
+}
+
+
+/**
+ * eap_set_config_blob - Set or add a named configuration blob
+ * @sm: Pointer to EAP state machine allocated with eap_peer_sm_init()
+ * @blob: New value for the blob
+ *
+ * Adds a new configuration blob or replaces the current value of an existing
+ * blob.
+ */
+void eap_set_config_blob(struct eap_sm *sm, struct wpa_config_blob *blob)
+{
+#ifndef CONFIG_NO_CONFIG_BLOBS
+ sm->eapol_cb->set_config_blob(sm->eapol_ctx, blob);
+#endif /* CONFIG_NO_CONFIG_BLOBS */
+}
+
+
+/**
+ * eap_get_config_blob - Get a named configuration blob
+ * @sm: Pointer to EAP state machine allocated with eap_peer_sm_init()
+ * @name: Name of the blob
+ * Returns: Pointer to blob data or %NULL if not found
+ */
+const struct wpa_config_blob * eap_get_config_blob(struct eap_sm *sm,
+ const char *name)
+{
+#ifndef CONFIG_NO_CONFIG_BLOBS
+ return sm->eapol_cb->get_config_blob(sm->eapol_ctx, name);
+#else /* CONFIG_NO_CONFIG_BLOBS */
+ return NULL;
+#endif /* CONFIG_NO_CONFIG_BLOBS */
+}
+
+
+/**
+ * eap_set_force_disabled - Set force_disabled flag
+ * @sm: Pointer to EAP state machine allocated with eap_peer_sm_init()
+ * @disabled: 1 = EAP disabled, 0 = EAP enabled
+ *
+ * This function is used to force EAP state machine to be disabled when it is
+ * not in use (e.g., with WPA-PSK or plaintext connections).
+ */
+void eap_set_force_disabled(struct eap_sm *sm, int disabled)
+{
+ sm->force_disabled = disabled;
+}
+
+
+ /**
+ * eap_notify_pending - Notify that EAP method is ready to re-process a request
+ * @sm: Pointer to EAP state machine allocated with eap_peer_sm_init()
+ *
+ * An EAP method can perform a pending operation (e.g., to get a response from
+ * an external process). Once the response is available, this function can be
+ * used to request EAPOL state machine to retry delivering the previously
+ * received (and still unanswered) EAP request to EAP state machine.
+ */
+void eap_notify_pending(struct eap_sm *sm)
+{
+ sm->eapol_cb->notify_pending(sm->eapol_ctx);
+}
+
+
+/**
+ * eap_invalidate_cached_session - Mark cached session data invalid
+ * @sm: Pointer to EAP state machine allocated with eap_peer_sm_init()
+ */
+void eap_invalidate_cached_session(struct eap_sm *sm)
+{
+ if (sm)
+ eap_deinit_prev_method(sm, "invalidate");
+}
+
+
+int eap_is_wps_pbc_enrollee(struct eap_peer_config *conf)
+{
+ if (conf->identity_len != WSC_ID_ENROLLEE_LEN ||
+ os_memcmp(conf->identity, WSC_ID_ENROLLEE, WSC_ID_ENROLLEE_LEN))
+ return 0; /* Not a WPS Enrollee */
+
+ if (conf->phase1 == NULL || os_strstr(conf->phase1, "pbc=1") == NULL)
+ return 0; /* Not using PBC */
+
+ return 1;
+}
+
+
+int eap_is_wps_pin_enrollee(struct eap_peer_config *conf)
+{
+ if (conf->identity_len != WSC_ID_ENROLLEE_LEN ||
+ os_memcmp(conf->identity, WSC_ID_ENROLLEE, WSC_ID_ENROLLEE_LEN))
+ return 0; /* Not a WPS Enrollee */
+
+ if (conf->phase1 == NULL || os_strstr(conf->phase1, "pin=") == NULL)
+ return 0; /* Not using PIN */
+
+ return 1;
+}