Stripped down import of wpa_supplicant v0.3.8

1 files changed, 1421 insertions, 0 deletions

diff --git a/contrib/wpa_supplicant/eapol_sm.c b/contrib/wpa_supplicant/eapol_sm.c
new file mode 100644
index 0000000..93f9a54
--- /dev/null
+++ b/contrib/wpa_supplicant/eapol_sm.c
@@ -0,0 +1,1421 @@
+/*
+ * WPA Supplicant / EAPOL state machines
+ * Copyright (c) 2004-2005, Jouni Malinen <jkmaline@cc.hut.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.
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "common.h"
+#include "eapol_sm.h"
+#include "eap.h"
+#include "eloop.h"
+#include "wpa_supplicant.h"
+#include "l2_packet.h"
+#include "wpa.h"
+#include "md5.h"
+#include "rc4.h"
+
+
+/* IEEE 802.1aa/D6.1 - Supplicant */
+
+struct eapol_sm {
+	/* Timers */
+	unsigned int authWhile;
+	unsigned int heldWhile;
+	unsigned int startWhen;
+	unsigned int idleWhile; /* for EAP state machine */
+
+	/* Global variables */
+	Boolean eapFail;
+	Boolean eapolEap;
+	Boolean eapSuccess;
+	Boolean initialize;
+	Boolean keyDone;
+	Boolean keyRun;
+	PortControl portControl;
+	Boolean portEnabled;
+	PortStatus suppPortStatus;  /* dot1xSuppControlledPortStatus */
+	Boolean portValid;
+	Boolean suppAbort;
+	Boolean suppFail;
+	Boolean suppStart;
+	Boolean suppSuccess;
+	Boolean suppTimeout;
+
+	/* Supplicant PAE state machine */
+	enum {
+		SUPP_PAE_UNKNOWN = 0,
+		SUPP_PAE_DISCONNECTED = 1,
+		SUPP_PAE_LOGOFF = 2,
+		SUPP_PAE_CONNECTING = 3,
+		SUPP_PAE_AUTHENTICATING = 4,
+		SUPP_PAE_AUTHENTICATED = 5,
+		/* unused(6) */
+		SUPP_PAE_HELD = 7,
+		SUPP_PAE_RESTART = 8,
+		SUPP_PAE_S_FORCE_AUTH = 9,
+		SUPP_PAE_S_FORCE_UNAUTH = 10
+	} SUPP_PAE_state; /* dot1xSuppPaeState */
+	/* Variables */
+	Boolean userLogoff;
+	Boolean logoffSent;
+	unsigned int startCount;
+	Boolean eapRestart;
+	PortControl sPortMode;
+	/* Constants */
+	unsigned int heldPeriod; /* dot1xSuppHeldPeriod */
+	unsigned int startPeriod; /* dot1xSuppStartPeriod */
+	unsigned int maxStart; /* dot1xSuppMaxStart */
+
+	/* Key Receive state machine */
+	enum {
+		KEY_RX_UNKNOWN = 0,
+		KEY_RX_NO_KEY_RECEIVE, KEY_RX_KEY_RECEIVE
+	} KEY_RX_state;
+	/* Variables */
+	Boolean rxKey;
+
+	/* Supplicant Backend state machine */
+	enum {
+		SUPP_BE_UNKNOWN = 0,
+		SUPP_BE_INITIALIZE = 1,
+		SUPP_BE_IDLE = 2,
+		SUPP_BE_REQUEST = 3,
+		SUPP_BE_RECEIVE = 4,
+		SUPP_BE_RESPONSE = 5,
+		SUPP_BE_FAIL = 6,
+		SUPP_BE_TIMEOUT = 7, 
+		SUPP_BE_SUCCESS = 8
+	} SUPP_BE_state; /* dot1xSuppBackendPaeState */
+	/* Variables */
+	Boolean eapNoResp;
+	Boolean eapReq;
+	Boolean eapResp;
+	/* Constants */
+	unsigned int authPeriod; /* dot1xSuppAuthPeriod */
+
+	/* Statistics */
+	unsigned int dot1xSuppEapolFramesRx;
+	unsigned int dot1xSuppEapolFramesTx;
+	unsigned int dot1xSuppEapolStartFramesTx;
+	unsigned int dot1xSuppEapolLogoffFramesTx;
+	unsigned int dot1xSuppEapolRespFramesTx;
+	unsigned int dot1xSuppEapolReqIdFramesRx;
+	unsigned int dot1xSuppEapolReqFramesRx;
+	unsigned int dot1xSuppInvalidEapolFramesRx;
+	unsigned int dot1xSuppEapLengthErrorFramesRx;
+	unsigned int dot1xSuppLastEapolFrameVersion;
+	unsigned char dot1xSuppLastEapolFrameSource[6];
+
+	/* Miscellaneous variables (not defined in IEEE 802.1aa/D6.1) */
+	Boolean changed;
+	struct eap_sm *eap;
+	struct wpa_ssid *config;
+	Boolean initial_req;
+	u8 *last_rx_key;
+	size_t last_rx_key_len;
+	u8 *eapReqData; /* for EAP */
+	size_t eapReqDataLen; /* for EAP */
+	Boolean altAccept; /* for EAP */
+	Boolean altReject; /* for EAP */
+	Boolean replay_counter_valid;
+	u8 last_replay_counter[16];
+	struct eapol_config conf;
+	struct eapol_ctx *ctx;
+	enum { EAPOL_CB_IN_PROGRESS = 0, EAPOL_CB_SUCCESS, EAPOL_CB_FAILURE }
+		cb_status;
+	Boolean cached_pmk;
+
+	Boolean unicast_key_received, broadcast_key_received;
+};
+
+
+static void eapol_sm_txLogoff(struct eapol_sm *sm);
+static void eapol_sm_txStart(struct eapol_sm *sm);
+static void eapol_sm_processKey(struct eapol_sm *sm);
+static void eapol_sm_getSuppRsp(struct eapol_sm *sm);
+static void eapol_sm_txSuppRsp(struct eapol_sm *sm);
+static void eapol_sm_abortSupp(struct eapol_sm *sm);
+static void eapol_sm_abort_cached(struct eapol_sm *sm);
+static void eapol_sm_step_timeout(void *eloop_ctx, void *timeout_ctx);
+
+static struct eapol_callbacks eapol_cb;
+
+
+/* Definitions for clarifying state machine implementation */
+#define SM_STATE(machine, state) \
+static void sm_ ## machine ## _ ## state ## _Enter(struct eapol_sm *sm, \
+	int global)
+
+#define SM_ENTRY(machine, state) \
+if (!global || sm->machine ## _state != machine ## _ ## state) { \
+	sm->changed = TRUE; \
+	wpa_printf(MSG_DEBUG, "EAPOL: " #machine " entering state " #state); \
+} \
+sm->machine ## _state = machine ## _ ## state;
+
+#define SM_ENTER(machine, state) \
+sm_ ## machine ## _ ## state ## _Enter(sm, 0)
+#define SM_ENTER_GLOBAL(machine, state) \
+sm_ ## machine ## _ ## state ## _Enter(sm, 1)
+
+#define SM_STEP(machine) \
+static void sm_ ## machine ## _Step(struct eapol_sm *sm)
+
+#define SM_STEP_RUN(machine) sm_ ## machine ## _Step(sm)
+
+
+/* Port Timers state machine - implemented as a function that will be called
+ * once a second as a registered event loop timeout */
+static void eapol_port_timers_tick(void *eloop_ctx, void *timeout_ctx)
+{
+	struct eapol_sm *sm = timeout_ctx;
+
+	if (sm->authWhile > 0)
+		sm->authWhile--;
+	if (sm->heldWhile > 0)
+		sm->heldWhile--;
+	if (sm->startWhen > 0)
+		sm->startWhen--;
+	if (sm->idleWhile > 0)
+		sm->idleWhile--;
+	wpa_printf(MSG_MSGDUMP, "EAPOL: Port Timers tick - authWhile=%d "
+		   "heldWhile=%d startWhen=%d idleWhile=%d",
+		   sm->authWhile, sm->heldWhile, sm->startWhen, sm->idleWhile);
+
+	eapol_sm_step(sm);
+
+	eloop_register_timeout(1, 0, eapol_port_timers_tick, eloop_ctx, sm);
+}
+
+
+SM_STATE(SUPP_PAE, LOGOFF)
+{
+	SM_ENTRY(SUPP_PAE, LOGOFF);
+	eapol_sm_txLogoff(sm);
+	sm->logoffSent = TRUE;
+	sm->suppPortStatus = Unauthorized;
+}
+
+
+SM_STATE(SUPP_PAE, DISCONNECTED)
+{
+	SM_ENTRY(SUPP_PAE, DISCONNECTED);
+	sm->sPortMode = Auto;
+	sm->startCount = 0;
+	sm->logoffSent = FALSE;
+	sm->suppPortStatus = Unauthorized;
+	sm->suppAbort = TRUE;
+
+	sm->unicast_key_received = FALSE;
+	sm->broadcast_key_received = FALSE;
+}
+
+
+SM_STATE(SUPP_PAE, CONNECTING)
+{
+	SM_ENTRY(SUPP_PAE, CONNECTING);
+	sm->startWhen = sm->startPeriod;
+	sm->startCount++;
+	sm->eapolEap = FALSE;
+	eapol_sm_txStart(sm);
+}
+
+
+SM_STATE(SUPP_PAE, AUTHENTICATING)
+{
+	SM_ENTRY(SUPP_PAE, AUTHENTICATING);
+	sm->startCount = 0;
+	sm->suppSuccess = FALSE;
+	sm->suppFail = FALSE;
+	sm->suppTimeout = FALSE;
+	sm->keyRun = FALSE;
+	sm->keyDone = FALSE;
+	sm->suppStart = TRUE;
+}
+
+
+SM_STATE(SUPP_PAE, HELD)
+{
+	SM_ENTRY(SUPP_PAE, HELD);
+	sm->heldWhile = sm->heldPeriod;
+	sm->suppPortStatus = Unauthorized;
+	sm->cb_status = EAPOL_CB_FAILURE;
+}
+
+
+SM_STATE(SUPP_PAE, AUTHENTICATED)
+{
+	SM_ENTRY(SUPP_PAE, AUTHENTICATED);
+	sm->suppPortStatus = Authorized;
+	sm->cb_status = EAPOL_CB_SUCCESS;
+}
+
+
+SM_STATE(SUPP_PAE, RESTART)
+{
+	SM_ENTRY(SUPP_PAE, RESTART);
+	sm->eapRestart = TRUE;
+}
+
+
+SM_STATE(SUPP_PAE, S_FORCE_AUTH)
+{
+	SM_ENTRY(SUPP_PAE, S_FORCE_AUTH);
+	sm->suppPortStatus = Authorized;
+	sm->sPortMode = ForceAuthorized;
+}
+
+
+SM_STATE(SUPP_PAE, S_FORCE_UNAUTH)
+{
+	SM_ENTRY(SUPP_PAE, S_FORCE_UNAUTH);
+	sm->suppPortStatus = Unauthorized;
+	sm->sPortMode = ForceUnauthorized;
+	eapol_sm_txLogoff(sm);
+}
+
+
+SM_STEP(SUPP_PAE)
+{
+	if ((sm->userLogoff && !sm->logoffSent) &&
+	    !(sm->initialize || !sm->portEnabled))
+		SM_ENTER_GLOBAL(SUPP_PAE, LOGOFF);
+	else if (((sm->portControl == Auto) &&
+		  (sm->sPortMode != sm->portControl)) ||
+		 sm->initialize || !sm->portEnabled)
+		SM_ENTER_GLOBAL(SUPP_PAE, DISCONNECTED);
+	else if ((sm->portControl == ForceAuthorized) &&
+		 (sm->sPortMode != sm->portControl) &&
+		 !(sm->initialize || !sm->portEnabled))
+		SM_ENTER_GLOBAL(SUPP_PAE, S_FORCE_AUTH);
+	else if ((sm->portControl == ForceUnauthorized) &&
+		 (sm->sPortMode != sm->portControl) &&
+		 !(sm->initialize || !sm->portEnabled))
+		SM_ENTER_GLOBAL(SUPP_PAE, S_FORCE_UNAUTH);
+	else switch (sm->SUPP_PAE_state) {
+	case SUPP_PAE_UNKNOWN:
+		break;
+	case SUPP_PAE_LOGOFF:
+		if (!sm->userLogoff)
+			SM_ENTER(SUPP_PAE, DISCONNECTED);
+		break;
+	case SUPP_PAE_DISCONNECTED:
+		SM_ENTER(SUPP_PAE, CONNECTING);
+		break;
+	case SUPP_PAE_CONNECTING:
+		if (sm->startWhen == 0 && sm->startCount < sm->maxStart)
+			SM_ENTER(SUPP_PAE, CONNECTING);
+		else if (sm->startWhen == 0 &&
+			 sm->startCount >= sm->maxStart &&
+			 sm->portValid)
+			SM_ENTER(SUPP_PAE, AUTHENTICATED);
+		else if (sm->eapSuccess || sm->eapFail)
+			SM_ENTER(SUPP_PAE, AUTHENTICATING);
+		else if (sm->eapolEap)
+			SM_ENTER(SUPP_PAE, RESTART);
+		else if (sm->startWhen == 0 &&
+			 sm->startCount >= sm->maxStart &&
+			 !sm->portValid)
+			SM_ENTER(SUPP_PAE, HELD);
+		break;
+	case SUPP_PAE_AUTHENTICATING:
+		if (sm->eapSuccess && !sm->portValid &&
+		    sm->conf.accept_802_1x_keys &&
+		    sm->conf.required_keys == 0) {
+			wpa_printf(MSG_DEBUG, "EAPOL: IEEE 802.1X for "
+				   "plaintext connection; no EAPOL-Key frames "
+				   "required");
+			sm->portValid = TRUE;
+			if (sm->ctx->eapol_done_cb)
+				sm->ctx->eapol_done_cb(sm->ctx->ctx);
+		}
+		if (sm->eapSuccess && sm->portValid)
+			SM_ENTER(SUPP_PAE, AUTHENTICATED);
+		else if (sm->eapFail || (sm->keyDone && !sm->portValid))
+			SM_ENTER(SUPP_PAE, HELD);
+		else if (sm->suppTimeout)
+			SM_ENTER(SUPP_PAE, CONNECTING);
+		break;
+	case SUPP_PAE_HELD:
+		if (sm->heldWhile == 0)
+			SM_ENTER(SUPP_PAE, CONNECTING);
+		else if (sm->eapolEap)
+			SM_ENTER(SUPP_PAE, RESTART);
+		break;
+	case SUPP_PAE_AUTHENTICATED:
+		if (sm->eapolEap && sm->portValid)
+			SM_ENTER(SUPP_PAE, RESTART);
+		else if (!sm->portValid)
+			SM_ENTER(SUPP_PAE, DISCONNECTED);
+		break;
+	case SUPP_PAE_RESTART:
+		if (!sm->eapRestart)
+			SM_ENTER(SUPP_PAE, AUTHENTICATING);
+		break;
+	case SUPP_PAE_S_FORCE_AUTH:
+		break;
+	case SUPP_PAE_S_FORCE_UNAUTH:
+		break;
+	}
+}
+
+
+SM_STATE(KEY_RX, NO_KEY_RECEIVE)
+{
+	SM_ENTRY(KEY_RX, NO_KEY_RECEIVE);
+}
+
+
+SM_STATE(KEY_RX, KEY_RECEIVE)
+{
+	SM_ENTRY(KEY_RX, KEY_RECEIVE);
+	eapol_sm_processKey(sm);
+	sm->rxKey = FALSE;
+}
+
+
+SM_STEP(KEY_RX)
+{
+	if (sm->initialize || !sm->portEnabled)
+		SM_ENTER_GLOBAL(KEY_RX, NO_KEY_RECEIVE);
+	switch (sm->KEY_RX_state) {
+	case KEY_RX_UNKNOWN:
+		break;
+	case KEY_RX_NO_KEY_RECEIVE:
+		if (sm->rxKey)
+			SM_ENTER(KEY_RX, KEY_RECEIVE);
+		break;
+	case KEY_RX_KEY_RECEIVE:
+		if (sm->rxKey)
+			SM_ENTER(KEY_RX, KEY_RECEIVE);
+		break;
+	}
+}
+
+
+SM_STATE(SUPP_BE, REQUEST)
+{
+	SM_ENTRY(SUPP_BE, REQUEST);
+	sm->authWhile = 0;
+	sm->eapReq = TRUE;
+	eapol_sm_getSuppRsp(sm);
+}
+
+
+SM_STATE(SUPP_BE, RESPONSE)
+{
+	SM_ENTRY(SUPP_BE, RESPONSE);
+	eapol_sm_txSuppRsp(sm);
+	sm->eapResp = FALSE;
+}
+
+
+SM_STATE(SUPP_BE, SUCCESS)
+{
+	SM_ENTRY(SUPP_BE, SUCCESS);
+	sm->keyRun = TRUE;
+	sm->suppSuccess = TRUE;
+
+	if (eap_key_available(sm->eap)) {
+		/* New key received - clear IEEE 802.1X EAPOL-Key replay
+		 * counter */
+		sm->replay_counter_valid = FALSE;
+	}
+}
+
+
+SM_STATE(SUPP_BE, FAIL)
+{
+	SM_ENTRY(SUPP_BE, FAIL);
+	sm->suppFail = TRUE;
+}
+
+
+SM_STATE(SUPP_BE, TIMEOUT)
+{
+	SM_ENTRY(SUPP_BE, TIMEOUT);
+	sm->suppTimeout = TRUE;
+}
+
+
+SM_STATE(SUPP_BE, IDLE)
+{
+	SM_ENTRY(SUPP_BE, IDLE);
+	sm->suppStart = FALSE;
+	sm->initial_req = TRUE;
+}
+
+
+SM_STATE(SUPP_BE, INITIALIZE)
+{
+	SM_ENTRY(SUPP_BE, INITIALIZE);
+	eapol_sm_abortSupp(sm);
+	sm->suppAbort = FALSE;
+}
+
+
+SM_STATE(SUPP_BE, RECEIVE)
+{
+	SM_ENTRY(SUPP_BE, RECEIVE);
+	sm->authWhile = sm->authPeriod;
+	sm->eapolEap = FALSE;
+	sm->eapNoResp = FALSE;
+	sm->initial_req = FALSE;
+}
+
+
+SM_STEP(SUPP_BE)
+{
+	if (sm->initialize || sm->suppAbort)
+		SM_ENTER_GLOBAL(SUPP_BE, INITIALIZE);
+	else switch (sm->SUPP_BE_state) {
+	case SUPP_BE_UNKNOWN:
+		break;
+	case SUPP_BE_REQUEST:
+		if (sm->eapResp && sm->eapNoResp) {
+			wpa_printf(MSG_DEBUG, "EAPOL: SUPP_BE REQUEST: both "
+				   "eapResp and eapNoResp set?!");
+		}
+		if (sm->eapResp)
+			SM_ENTER(SUPP_BE, RESPONSE);
+		else if (sm->eapNoResp)
+			SM_ENTER(SUPP_BE, RECEIVE);
+		break;
+	case SUPP_BE_RESPONSE:
+		SM_ENTER(SUPP_BE, RECEIVE);
+		break;
+	case SUPP_BE_SUCCESS:
+		SM_ENTER(SUPP_BE, IDLE);
+		break;
+	case SUPP_BE_FAIL:
+		SM_ENTER(SUPP_BE, IDLE);
+		break;
+	case SUPP_BE_TIMEOUT:
+		SM_ENTER(SUPP_BE, IDLE);
+		break;
+	case SUPP_BE_IDLE:
+		if (sm->eapFail && sm->suppStart)
+			SM_ENTER(SUPP_BE, FAIL);
+		else if (sm->eapolEap && sm->suppStart)
+			SM_ENTER(SUPP_BE, REQUEST);
+		else if (sm->eapSuccess && sm->suppStart)
+			SM_ENTER(SUPP_BE, SUCCESS);
+		break;
+	case SUPP_BE_INITIALIZE:
+		SM_ENTER(SUPP_BE, IDLE);
+		break;
+	case SUPP_BE_RECEIVE:
+		if (sm->eapolEap)
+			SM_ENTER(SUPP_BE, REQUEST);
+		else if (sm->eapFail)
+			SM_ENTER(SUPP_BE, FAIL);
+		else if (sm->authWhile == 0)
+			SM_ENTER(SUPP_BE, TIMEOUT);
+		else if (sm->eapSuccess)
+			SM_ENTER(SUPP_BE, SUCCESS);
+		break;
+	}
+}
+
+
+static void eapol_sm_txLogoff(struct eapol_sm *sm)
+{
+	wpa_printf(MSG_DEBUG, "EAPOL: txLogoff");
+	sm->ctx->eapol_send(sm->ctx->ctx, IEEE802_1X_TYPE_EAPOL_LOGOFF,
+			    (u8 *) "", 0);
+	sm->dot1xSuppEapolLogoffFramesTx++;
+	sm->dot1xSuppEapolFramesTx++;
+}
+
+
+static void eapol_sm_txStart(struct eapol_sm *sm)
+{
+	wpa_printf(MSG_DEBUG, "EAPOL: txStart");
+	sm->ctx->eapol_send(sm->ctx->ctx, IEEE802_1X_TYPE_EAPOL_START,
+			    (u8 *) "", 0);
+	sm->dot1xSuppEapolStartFramesTx++;
+	sm->dot1xSuppEapolFramesTx++;
+}
+
+
+#define IEEE8021X_ENCR_KEY_LEN 32
+#define IEEE8021X_SIGN_KEY_LEN 32
+
+struct eap_key_data {
+	u8 encr_key[IEEE8021X_ENCR_KEY_LEN];
+	u8 sign_key[IEEE8021X_SIGN_KEY_LEN];
+};
+
+
+static void eapol_sm_processKey(struct eapol_sm *sm)
+{
+	struct ieee802_1x_hdr *hdr;
+	struct ieee802_1x_eapol_key *key;
+	struct eap_key_data keydata;
+	u8 orig_key_sign[IEEE8021X_KEY_SIGN_LEN], datakey[32];
+	u8 ekey[IEEE8021X_KEY_IV_LEN + IEEE8021X_ENCR_KEY_LEN];
+	int key_len, res, sign_key_len, encr_key_len;
+
+	wpa_printf(MSG_DEBUG, "EAPOL: processKey");
+	if (sm->last_rx_key == NULL)
+		return;
+
+	if (!sm->conf.accept_802_1x_keys) {
+		wpa_printf(MSG_WARNING, "EAPOL: Received IEEE 802.1X EAPOL-Key"
+			   " even though this was not accepted - "
+			   "ignoring this packet");
+		return;
+	}
+
+	hdr = (struct ieee802_1x_hdr *) sm->last_rx_key;
+	key = (struct ieee802_1x_eapol_key *) (hdr + 1);
+	if (sizeof(*hdr) + be_to_host16(hdr->length) > sm->last_rx_key_len) {
+		wpa_printf(MSG_WARNING, "EAPOL: Too short EAPOL-Key frame");
+		return;
+	}
+	wpa_printf(MSG_DEBUG, "EAPOL: RX IEEE 802.1X ver=%d type=%d len=%d "
+		   "EAPOL-Key: type=%d key_length=%d key_index=0x%x",
+		   hdr->version, hdr->type, be_to_host16(hdr->length),
+		   key->type, be_to_host16(key->key_length), key->key_index);
+
+	sign_key_len = IEEE8021X_SIGN_KEY_LEN;
+	encr_key_len = IEEE8021X_ENCR_KEY_LEN;
+	res = eapol_sm_get_key(sm, (u8 *) &keydata, sizeof(keydata));
+	if (res < 0) {
+		wpa_printf(MSG_DEBUG, "EAPOL: Could not get master key for "
+			   "decrypting EAPOL-Key keys");
+		return;
+	}
+	if (res == 16) {
+		/* LEAP derives only 16 bytes of keying material. */
+		res = eapol_sm_get_key(sm, (u8 *) &keydata, 16);
+		if (res) {
+			wpa_printf(MSG_DEBUG, "EAPOL: Could not get LEAP "
+				   "master key for decrypting EAPOL-Key keys");
+			return;
+		}
+		sign_key_len = 16;
+		encr_key_len = 16;
+		memcpy(keydata.sign_key, keydata.encr_key, 16);
+	} else if (res) {
+		wpa_printf(MSG_DEBUG, "EAPOL: Could not get enough master key "
+			   "data for decrypting EAPOL-Key keys (res=%d)", res);
+		return;
+	}
+
+	/* The key replay_counter must increase when same master key */
+	if (sm->replay_counter_valid &&
+	    memcmp(sm->last_replay_counter, key->replay_counter,
+		   IEEE8021X_REPLAY_COUNTER_LEN) >= 0) {
+		wpa_printf(MSG_WARNING, "EAPOL: EAPOL-Key replay counter did "
+			   "not increase - ignoring key");
+		wpa_hexdump(MSG_DEBUG, "EAPOL: last replay counter",
+			    sm->last_replay_counter,
+			    IEEE8021X_REPLAY_COUNTER_LEN);
+		wpa_hexdump(MSG_DEBUG, "EAPOL: received replay counter",
+			    key->replay_counter, IEEE8021X_REPLAY_COUNTER_LEN);
+		return;
+	}
+
+	/* Verify key signature (HMAC-MD5) */
+	memcpy(orig_key_sign, key->key_signature, IEEE8021X_KEY_SIGN_LEN);
+	memset(key->key_signature, 0, IEEE8021X_KEY_SIGN_LEN);
+	hmac_md5(keydata.sign_key, sign_key_len,
+		 sm->last_rx_key, sizeof(*hdr) + be_to_host16(hdr->length),
+		 key->key_signature);
+	if (memcmp(orig_key_sign, key->key_signature, IEEE8021X_KEY_SIGN_LEN)
+	    != 0) {
+		wpa_printf(MSG_DEBUG, "EAPOL: Invalid key signature in "
+			   "EAPOL-Key packet");
+		memcpy(key->key_signature, orig_key_sign,
+		       IEEE8021X_KEY_SIGN_LEN);
+		return;
+	}
+	wpa_printf(MSG_DEBUG, "EAPOL: EAPOL-Key key signature verified");
+
+	key_len = be_to_host16(hdr->length) - sizeof(*key);
+	if (key_len > 32 || be_to_host16(key->key_length) > 32) {
+		wpa_printf(MSG_WARNING, "EAPOL: Too long key data length %d",
+			   key_len ? key_len : be_to_host16(key->key_length));
+		return;
+	}
+	if (key_len == be_to_host16(key->key_length)) {
+		memcpy(ekey, key->key_iv, IEEE8021X_KEY_IV_LEN);
+		memcpy(ekey + IEEE8021X_KEY_IV_LEN, keydata.encr_key,
+		       encr_key_len);
+		memcpy(datakey, key + 1, key_len);
+		rc4(datakey, key_len, ekey,
+		    IEEE8021X_KEY_IV_LEN + encr_key_len);
+		wpa_hexdump_key(MSG_DEBUG, "EAPOL: Decrypted(RC4) key",
+				datakey, key_len);
+	} else if (key_len == 0) {
+		/* IEEE 802.1X-REV specifies that least significant Key Length
+		 * octets from MS-MPPE-Send-Key are used as the key if the key
+		 * data is not present. This seems to be meaning the beginning
+		 * of the MS-MPPE-Send-Key. In addition, MS-MPPE-Send-Key in
+		 * Supplicant corresponds to MS-MPPE-Recv-Key in Authenticator.
+		 * Anyway, taking the beginning of the keying material from EAP
+		 * seems to interoperate with Authenticators. */
+		key_len = be_to_host16(key->key_length);
+		memcpy(datakey, keydata.encr_key, key_len);
+		wpa_hexdump_key(MSG_DEBUG, "EAPOL: using part of EAP keying "
+				"material data encryption key",
+				datakey, key_len);
+	} else {
+		wpa_printf(MSG_DEBUG, "EAPOL: Invalid key data length %d "
+			   "(key_length=%d)", key_len,
+			   be_to_host16(key->key_length));
+		return;
+	}
+
+	sm->replay_counter_valid = TRUE;
+	memcpy(sm->last_replay_counter, key->replay_counter,
+	       IEEE8021X_REPLAY_COUNTER_LEN);
+
+	wpa_printf(MSG_DEBUG, "EAPOL: Setting dynamic WEP key: %s keyidx %d "
+		   "len %d",
+		   key->key_index & IEEE8021X_KEY_INDEX_FLAG ?
+		   "unicast" : "broadcast",
+		   key->key_index & IEEE8021X_KEY_INDEX_MASK, key_len);
+
+	if (sm->ctx->set_wep_key &&
+	    sm->ctx->set_wep_key(sm->ctx->ctx,
+				 key->key_index & IEEE8021X_KEY_INDEX_FLAG,
+				 key->key_index & IEEE8021X_KEY_INDEX_MASK,
+				 datakey, key_len) < 0) {
+		wpa_printf(MSG_WARNING, "EAPOL: Failed to set WEP key to the "
+			   " driver.");
+	} else {
+		if (key->key_index & IEEE8021X_KEY_INDEX_FLAG)
+			sm->unicast_key_received = TRUE;
+		else
+			sm->broadcast_key_received = TRUE;
+
+		if ((sm->unicast_key_received ||
+		     !(sm->conf.required_keys & EAPOL_REQUIRE_KEY_UNICAST)) &&
+		    (sm->broadcast_key_received ||
+		     !(sm->conf.required_keys & EAPOL_REQUIRE_KEY_BROADCAST)))
+		{
+			wpa_printf(MSG_DEBUG, "EAPOL: all required EAPOL-Key "
+				   "frames received");
+			sm->portValid = TRUE;
+			if (sm->ctx->eapol_done_cb)
+				sm->ctx->eapol_done_cb(sm->ctx->ctx);
+		}
+	}
+}
+
+
+static void eapol_sm_getSuppRsp(struct eapol_sm *sm)
+{
+	wpa_printf(MSG_DEBUG, "EAPOL: getSuppRsp");
+	/* EAP layer processing; no special code is needed, since Supplicant
+	 * Backend state machine is waiting for eapNoResp or eapResp to be set
+	 * and these are only set in the EAP state machine when the processing
+	 * has finished. */
+}
+
+
+static void eapol_sm_txSuppRsp(struct eapol_sm *sm)
+{
+	u8 *resp;
+	size_t resp_len;
+
+	wpa_printf(MSG_DEBUG, "EAPOL: txSuppRsp");
+	resp = eap_get_eapRespData(sm->eap, &resp_len);
+	if (resp == NULL) {
+		wpa_printf(MSG_WARNING, "EAPOL: txSuppRsp - EAP response data "
+			   "not available");
+		return;
+	}
+
+	/* Send EAP-Packet from the EAP layer to the Authenticator */
+	sm->ctx->eapol_send(sm->ctx->ctx, IEEE802_1X_TYPE_EAP_PACKET,
+			    resp, resp_len);
+
+	/* eapRespData is not used anymore, so free it here */
+	free(resp);
+
+	if (sm->initial_req)
+		sm->dot1xSuppEapolReqIdFramesRx++;
+	else
+		sm->dot1xSuppEapolReqFramesRx++;
+	sm->dot1xSuppEapolRespFramesTx++;
+	sm->dot1xSuppEapolFramesTx++;
+}
+
+
+static void eapol_sm_abortSupp(struct eapol_sm *sm)
+{
+	/* release system resources that may have been allocated for the
+	 * authentication session */
+	free(sm->last_rx_key);
+	sm->last_rx_key = NULL;
+	free(sm->eapReqData);
+	sm->eapReqData = NULL;
+	eap_sm_abort(sm->eap);
+}
+
+
+struct eapol_sm *eapol_sm_init(struct eapol_ctx *ctx)
+{
+	struct eapol_sm *sm;
+	sm = malloc(sizeof(*sm));
+	if (sm == NULL)
+		return NULL;
+	memset(sm, 0, sizeof(*sm));
+	sm->ctx = ctx;
+
+	sm->portControl = Auto;
+
+	/* Supplicant PAE state machine */
+	sm->heldPeriod = 60;
+	sm->startPeriod = 30;
+	sm->maxStart = 3;
+
+	/* Supplicant Backend state machine */
+	sm->authPeriod = 30;
+
+	sm->eap = eap_sm_init(sm, &eapol_cb, sm->ctx->msg_ctx);
+	if (sm->eap == NULL) {
+		free(sm);
+		return NULL;
+	}
+
+	/* Initialize EAPOL state machines */
+	sm->initialize = TRUE;
+	eapol_sm_step(sm);
+	sm->initialize = FALSE;
+	eapol_sm_step(sm);
+
+	eloop_register_timeout(1, 0, eapol_port_timers_tick, NULL, sm);
+
+	return sm;
+}
+
+
+void eapol_sm_deinit(struct eapol_sm *sm)
+{
+	if (sm == NULL)
+		return;
+	eloop_cancel_timeout(eapol_sm_step_timeout, NULL, sm);
+	eloop_cancel_timeout(eapol_port_timers_tick, NULL, sm);
+	eap_sm_deinit(sm->eap);
+	free(sm->last_rx_key);
+	free(sm->eapReqData);
+	free(sm->ctx);
+	free(sm);
+}
+
+
+static void eapol_sm_step_timeout(void *eloop_ctx, void *timeout_ctx)
+{
+	eapol_sm_step(timeout_ctx);
+}
+
+
+void eapol_sm_step(struct eapol_sm *sm)
+{
+	int i;
+
+	/* In theory, it should be ok to run this in loop until !changed.
+	 * However, it is better to use a limit on number of iterations to
+	 * allow events (e.g., SIGTERM) to stop the program cleanly if the
+	 * state machine were to generate a busy loop. */
+	for (i = 0; i < 100; i++) {
+		sm->changed = FALSE;
+		SM_STEP_RUN(SUPP_PAE);
+		SM_STEP_RUN(KEY_RX);
+		SM_STEP_RUN(SUPP_BE);
+		if (eap_sm_step(sm->eap))
+			sm->changed = TRUE;
+	}
+
+	if (sm->changed) {
+		/* restart EAPOL state machine step from timeout call in order
+		 * to allow other events to be processed. */
+		eloop_cancel_timeout(eapol_sm_step_timeout, NULL, sm);
+		eloop_register_timeout(0, 0, eapol_sm_step_timeout, NULL, sm);
+	}
+
+	if (sm->ctx->cb && sm->cb_status != EAPOL_CB_IN_PROGRESS) {
+		int success = sm->cb_status == EAPOL_CB_SUCCESS ? 1 : 0;
+		sm->cb_status = EAPOL_CB_IN_PROGRESS;
+		sm->ctx->cb(sm, success, sm->ctx->cb_ctx);
+	}
+}
+
+
+static const char *eapol_supp_pae_state(int state)
+{
+	switch (state) {
+	case SUPP_PAE_LOGOFF:
+		return "LOGOFF";
+	case SUPP_PAE_DISCONNECTED:
+		return "DISCONNECTED";
+	case SUPP_PAE_CONNECTING:
+		return "CONNECTING";
+	case SUPP_PAE_AUTHENTICATING:
+		return "AUTHENTICATING";
+	case SUPP_PAE_HELD:
+		return "HELD";
+	case SUPP_PAE_AUTHENTICATED:
+		return "AUTHENTICATED";
+	case SUPP_PAE_RESTART:
+		return "RESTART";
+	default:
+		return "UNKNOWN";
+	}
+}
+
+
+static const char *eapol_supp_be_state(int state)
+{
+	switch (state) {
+	case SUPP_BE_REQUEST:
+		return "REQUEST";
+	case SUPP_BE_RESPONSE:
+		return "RESPONSE";
+	case SUPP_BE_SUCCESS:
+		return "SUCCESS";
+	case SUPP_BE_FAIL:
+		return "FAIL";
+	case SUPP_BE_TIMEOUT:
+		return "TIMEOUT";
+	case SUPP_BE_IDLE:
+		return "IDLE";
+	case SUPP_BE_INITIALIZE:
+		return "INITIALIZE";
+	case SUPP_BE_RECEIVE:
+		return "RECEIVE";
+	default:
+		return "UNKNOWN";
+	}
+}
+
+
+static const char * eapol_port_status(PortStatus status)
+{
+	if (status == Authorized)
+		return "Authorized";
+	else
+		return "Unauthorized";
+}
+
+
+static const char * eapol_port_control(PortControl ctrl)
+{
+	switch (ctrl) {
+	case Auto:
+		return "Auto";
+	case ForceUnauthorized:
+		return "ForceUnauthorized";
+	case ForceAuthorized:
+		return "ForceAuthorized";
+	default:
+		return "Unknown";
+	}
+}
+
+
+void eapol_sm_configure(struct eapol_sm *sm, int heldPeriod, int authPeriod,
+			int startPeriod, int maxStart)
+{
+	if (sm == NULL)
+		return;
+	if (heldPeriod >= 0)
+		sm->heldPeriod = heldPeriod;
+	if (authPeriod >= 0)
+		sm->authPeriod = authPeriod;
+	if (startPeriod >= 0)
+		sm->startPeriod = startPeriod;
+	if (maxStart >= 0)
+		sm->maxStart = maxStart;
+}
+
+
+int eapol_sm_get_status(struct eapol_sm *sm, char *buf, size_t buflen,
+			int verbose)
+{
+	int len;
+	if (sm == NULL)
+		return 0;
+
+	len = snprintf(buf, buflen,
+		       "Supplicant PAE state=%s\n"
+		       "suppPortStatus=%s\n",
+		       eapol_supp_pae_state(sm->SUPP_PAE_state),
+		       eapol_port_status(sm->suppPortStatus));
+
+	if (verbose) {
+		len += snprintf(buf + len, buflen - len,
+				"heldPeriod=%d\n"
+				"authPeriod=%d\n"
+				"startPeriod=%d\n"
+				"maxStart=%d\n"
+				"portControl=%s\n"
+				"Supplicant Backend state=%s\n",
+				sm->heldPeriod,
+				sm->authPeriod,
+				sm->startPeriod,
+				sm->maxStart,
+				eapol_port_control(sm->portControl),
+				eapol_supp_be_state(sm->SUPP_BE_state));
+	}
+
+	len += eap_sm_get_status(sm->eap, buf + len, buflen - len, verbose);
+
+	return len;
+}
+
+
+int eapol_sm_get_mib(struct eapol_sm *sm, char *buf, size_t buflen)
+{
+	int len;
+	if (sm == NULL)
+		return 0;
+	len = snprintf(buf, buflen,
+		       "dot1xSuppPaeState=%d\n"
+		       "dot1xSuppHeldPeriod=%d\n"
+		       "dot1xSuppAuthPeriod=%d\n"
+		       "dot1xSuppStartPeriod=%d\n"
+		       "dot1xSuppMaxStart=%d\n"
+		       "dot1xSuppSuppControlledPortStatus=%s\n"
+		       "dot1xSuppBackendPaeState=%d\n"
+		       "dot1xSuppEapolFramesRx=%d\n"
+		       "dot1xSuppEapolFramesTx=%d\n"
+		       "dot1xSuppEapolStartFramesTx=%d\n"
+		       "dot1xSuppEapolLogoffFramesTx=%d\n"
+		       "dot1xSuppEapolRespFramesTx=%d\n"
+		       "dot1xSuppEapolReqIdFramesRx=%d\n"
+		       "dot1xSuppEapolReqFramesRx=%d\n"
+		       "dot1xSuppInvalidEapolFramesRx=%d\n"
+		       "dot1xSuppEapLengthErrorFramesRx=%d\n"
+		       "dot1xSuppLastEapolFrameVersion=%d\n"
+		       "dot1xSuppLastEapolFrameSource=" MACSTR "\n",
+		       sm->SUPP_PAE_state,
+		       sm->heldPeriod,
+		       sm->authPeriod,
+		       sm->startPeriod,
+		       sm->maxStart,
+		       sm->suppPortStatus == Authorized ?
+		       "Authorized" : "Unauthorized",
+		       sm->SUPP_BE_state,
+		       sm->dot1xSuppEapolFramesRx,
+		       sm->dot1xSuppEapolFramesTx,
+		       sm->dot1xSuppEapolStartFramesTx,
+		       sm->dot1xSuppEapolLogoffFramesTx,
+		       sm->dot1xSuppEapolRespFramesTx,
+		       sm->dot1xSuppEapolReqIdFramesRx,
+		       sm->dot1xSuppEapolReqFramesRx,
+		       sm->dot1xSuppInvalidEapolFramesRx,
+		       sm->dot1xSuppEapLengthErrorFramesRx,
+		       sm->dot1xSuppLastEapolFrameVersion,
+		       MAC2STR(sm->dot1xSuppLastEapolFrameSource));
+	return len;
+}
+
+
+void eapol_sm_rx_eapol(struct eapol_sm *sm, u8 *src, u8 *buf, size_t len)
+{
+	struct ieee802_1x_hdr *hdr;
+	struct ieee802_1x_eapol_key *key;
+	int plen, data_len;
+
+	if (sm == NULL)
+		return;
+	sm->dot1xSuppEapolFramesRx++;
+	if (len < sizeof(*hdr)) {
+		sm->dot1xSuppInvalidEapolFramesRx++;
+		return;
+	}
+	hdr = (struct ieee802_1x_hdr *) buf;
+	sm->dot1xSuppLastEapolFrameVersion = hdr->version;
+	memcpy(sm->dot1xSuppLastEapolFrameSource, src, ETH_ALEN);
+	if (hdr->version < EAPOL_VERSION) {
+		/* TODO: backwards compatibility */
+	}
+	plen = be_to_host16(hdr->length);
+	if (plen > len - sizeof(*hdr)) {
+		sm->dot1xSuppEapLengthErrorFramesRx++;
+		return;
+	}
+	data_len = plen + sizeof(*hdr);
+
+	switch (hdr->type) {
+	case IEEE802_1X_TYPE_EAP_PACKET:
+		if (sm->cached_pmk) {
+			/* Trying to use PMKSA caching, but Authenticator did
+			 * not seem to have a matching entry. Need to restart
+			 * EAPOL state machines.
+			 */
+			eapol_sm_abort_cached(sm);
+		}
+		free(sm->eapReqData);
+		sm->eapReqDataLen = plen;
+		sm->eapReqData = malloc(sm->eapReqDataLen);
+		if (sm->eapReqData) {
+			wpa_printf(MSG_DEBUG, "EAPOL: Received EAP-Packet "
+				   "frame");
+			memcpy(sm->eapReqData, (u8 *) (hdr + 1),
+			       sm->eapReqDataLen);
+			sm->eapolEap = TRUE;
+			eapol_sm_step(sm);
+		}
+		break;
+	case IEEE802_1X_TYPE_EAPOL_KEY:
+		if (plen < sizeof(*key)) {
+			wpa_printf(MSG_DEBUG, "EAPOL: Too short EAPOL-Key "
+				   "frame received");
+			break;
+		}
+		key = (struct ieee802_1x_eapol_key *) (hdr + 1);
+		if (key->type == EAPOL_KEY_TYPE_WPA ||
+		    key->type == EAPOL_KEY_TYPE_RSN) {
+			/* WPA Supplicant takes care of this frame. */
+			wpa_printf(MSG_DEBUG, "EAPOL: Ignoring WPA EAPOL-Key "
+				   "frame in EAPOL state machines");
+			break;
+		}
+		if (key->type != EAPOL_KEY_TYPE_RC4) {
+			wpa_printf(MSG_DEBUG, "EAPOL: Ignored unknown "
+				   "EAPOL-Key type %d", key->type);
+			break;
+		}
+		free(sm->last_rx_key);
+		sm->last_rx_key = malloc(data_len);
+		if (sm->last_rx_key) {
+			wpa_printf(MSG_DEBUG, "EAPOL: Received EAPOL-Key "
+				   "frame");
+			memcpy(sm->last_rx_key, buf, data_len);
+			sm->last_rx_key_len = data_len;
+			sm->rxKey = TRUE;
+			eapol_sm_step(sm);
+		}
+		break;
+	default:
+		wpa_printf(MSG_DEBUG, "EAPOL: Received unknown EAPOL type %d",
+			   hdr->type);
+		sm->dot1xSuppInvalidEapolFramesRx++;
+		break;
+	}
+}
+
+
+void eapol_sm_notify_tx_eapol_key(struct eapol_sm *sm)
+{
+	if (sm)
+		sm->dot1xSuppEapolFramesTx++;
+}
+
+
+void eapol_sm_notify_portEnabled(struct eapol_sm *sm, Boolean enabled)
+{
+	if (sm == NULL)
+		return;
+	wpa_printf(MSG_DEBUG, "EAPOL: External notification - "
+		   "portEnabled=%d", enabled);
+	sm->portEnabled = enabled;
+	eapol_sm_step(sm);
+}
+
+
+void eapol_sm_notify_portValid(struct eapol_sm *sm, Boolean valid)
+{
+	if (sm == NULL)
+		return;
+	wpa_printf(MSG_DEBUG, "EAPOL: External notification - "
+		   "portValid=%d", valid);
+	sm->portValid = valid;
+	eapol_sm_step(sm);
+}
+
+
+void eapol_sm_notify_eap_success(struct eapol_sm *sm, Boolean success)
+{
+	if (sm == NULL)
+		return;
+	wpa_printf(MSG_DEBUG, "EAPOL: External notification - "
+		   "EAP success=%d", success);
+	sm->eapSuccess = success;
+	sm->altAccept = success;
+	if (success)
+		eap_notify_success(sm->eap);
+	eapol_sm_step(sm);
+}
+
+
+void eapol_sm_notify_eap_fail(struct eapol_sm *sm, Boolean fail)
+{
+	if (sm == NULL)
+		return;
+	wpa_printf(MSG_DEBUG, "EAPOL: External notification - "
+		   "EAP fail=%d", fail);
+	sm->eapFail = fail;
+	sm->altReject = fail;
+	eapol_sm_step(sm);
+}
+
+
+void eapol_sm_notify_config(struct eapol_sm *sm, struct wpa_ssid *config,
+			    struct eapol_config *conf)
+{
+	if (sm == NULL)
+		return;
+
+	sm->config = config;
+
+	if (conf == NULL)
+		return;
+
+	sm->conf.accept_802_1x_keys = conf->accept_802_1x_keys;
+	sm->conf.required_keys = conf->required_keys;
+	sm->conf.fast_reauth = conf->fast_reauth;
+	if (sm->eap) {
+		eap_set_fast_reauth(sm->eap, conf->fast_reauth);
+		eap_set_workaround(sm->eap, conf->workaround);
+	}
+}
+
+
+int eapol_sm_get_key(struct eapol_sm *sm, u8 *key, size_t len)
+{
+	u8 *eap_key;
+	size_t eap_len;
+
+	if (sm == NULL || !eap_key_available(sm->eap))
+		return -1;
+	eap_key = eap_get_eapKeyData(sm->eap, &eap_len);
+	if (eap_key == NULL)
+		return -1;
+	if (len > eap_len)
+		return eap_len;
+	memcpy(key, eap_key, len);
+	return 0;
+}
+
+
+void eapol_sm_notify_logoff(struct eapol_sm *sm, Boolean logoff)
+{
+	if (sm) {
+		sm->userLogoff = logoff;
+		eapol_sm_step(sm);
+	}
+}
+
+
+void eapol_sm_notify_cached(struct eapol_sm *sm)
+{
+	if (sm == NULL)
+		return;
+	sm->SUPP_PAE_state = SUPP_PAE_AUTHENTICATED;
+	sm->suppPortStatus = Authorized;
+	eap_notify_success(sm->eap);
+}
+
+
+void eapol_sm_notify_pmkid_attempt(struct eapol_sm *sm, int attempt)
+{
+	if (sm == NULL)
+		return;
+	if (attempt) {
+		wpa_printf(MSG_DEBUG, "RSN: Trying to use cached PMKSA");
+		sm->cached_pmk = TRUE;
+	} else {
+		wpa_printf(MSG_DEBUG, "RSN: Do not try to use cached PMKSA");
+		sm->cached_pmk = FALSE;
+	}
+}
+
+
+static void eapol_sm_abort_cached(struct eapol_sm *sm)
+{
+	wpa_printf(MSG_DEBUG, "RSN: Authenticator did not accept PMKID, "
+		   "doing full EAP authentication");
+	if (sm == NULL)
+		return;
+	sm->cached_pmk = FALSE;
+	sm->SUPP_PAE_state = SUPP_PAE_CONNECTING;
+	sm->suppPortStatus = Unauthorized;
+	sm->eapRestart= TRUE;
+}
+
+
+void eapol_sm_register_scard_ctx(struct eapol_sm *sm, void *ctx)
+{
+	if (sm) {
+		sm->ctx->scard_ctx = ctx;
+		eap_register_scard_ctx(sm->eap, ctx);
+	}
+}
+
+
+void eapol_sm_notify_portControl(struct eapol_sm *sm, PortControl portControl)
+{
+	if (sm == NULL)
+		return;
+	wpa_printf(MSG_DEBUG, "EAPOL: External notification - "
+		   "portControl=%s", eapol_port_control(portControl));
+	sm->portControl = portControl;
+	eapol_sm_step(sm);
+}
+
+
+void eapol_sm_notify_ctrl_attached(struct eapol_sm *sm)
+{
+	if (sm == NULL)
+		return;
+	eap_sm_notify_ctrl_attached(sm->eap);
+}
+
+
+void eapol_sm_notify_ctrl_response(struct eapol_sm *sm)
+{
+	if (sm == NULL)
+		return;
+	if (sm->eapReqData && !sm->eapReq) {
+		wpa_printf(MSG_DEBUG, "EAPOL: received control response (user "
+			   "input) notification - retrying pending EAP "
+			   "Request");
+		sm->eapolEap = TRUE;
+		sm->eapReq = TRUE;
+		eapol_sm_step(sm);
+	}
+}
+
+
+static struct wpa_ssid * eapol_sm_get_config(void *ctx)
+{
+	struct eapol_sm *sm = ctx;
+	return sm ? sm->config : NULL;
+}
+
+
+static u8 * eapol_sm_get_eapReqData(void *ctx, size_t *len)
+{
+	struct eapol_sm *sm = ctx;
+	if (sm == NULL || sm->eapReqData == NULL) {
+		*len = 0;
+		return NULL;
+	}
+
+	*len = sm->eapReqDataLen;
+	return sm->eapReqData;
+}
+
+
+static Boolean eapol_sm_get_bool(void *ctx, enum eapol_bool_var variable)
+{
+	struct eapol_sm *sm = ctx;
+	if (sm == NULL)
+		return FALSE;
+	switch (variable) {
+	case EAPOL_eapSuccess:
+		return sm->eapSuccess;
+	case EAPOL_eapRestart:
+		return sm->eapRestart;
+	case EAPOL_eapFail:
+		return sm->eapFail;
+	case EAPOL_eapResp:
+		return sm->eapResp;
+	case EAPOL_eapNoResp:
+		return sm->eapNoResp;
+	case EAPOL_eapReq:
+		return sm->eapReq;
+	case EAPOL_portEnabled:
+		return sm->portEnabled;
+	case EAPOL_altAccept:
+		return sm->altAccept;
+	case EAPOL_altReject:
+		return sm->altReject;
+	}
+	return FALSE;
+}
+
+
+static void eapol_sm_set_bool(void *ctx, enum eapol_bool_var variable,
+			      Boolean value)
+{
+	struct eapol_sm *sm = ctx;
+	if (sm == NULL)
+		return;
+	switch (variable) {
+	case EAPOL_eapSuccess:
+		sm->eapSuccess = value;
+		break;
+	case EAPOL_eapRestart:
+		sm->eapRestart = value;
+		break;
+	case EAPOL_eapFail:
+		sm->eapFail = value;
+		break;
+	case EAPOL_eapResp:
+		sm->eapResp = value;
+		break;
+	case EAPOL_eapNoResp:
+		sm->eapNoResp = value;
+		break;
+	case EAPOL_eapReq:
+		sm->eapReq = value;
+		break;
+	case EAPOL_portEnabled:
+		sm->portEnabled = value;
+		break;
+	case EAPOL_altAccept:
+		sm->altAccept = value;
+		break;
+	case EAPOL_altReject:
+		sm->altReject = value;
+		break;
+	}
+}
+
+
+static unsigned int eapol_sm_get_int(void *ctx, enum eapol_int_var variable)
+{
+	struct eapol_sm *sm = ctx;
+	if (sm == NULL)
+		return 0;
+	switch (variable) {
+	case EAPOL_idleWhile:
+		return sm->idleWhile;
+	}
+	return 0;
+}
+
+
+static void eapol_sm_set_int(void *ctx, enum eapol_int_var variable,
+			     unsigned int value)
+{
+	struct eapol_sm *sm = ctx;
+	if (sm == NULL)
+		return;
+	switch (variable) {
+	case EAPOL_idleWhile:
+		sm->idleWhile = value;
+		break;
+	}
+}
+
+
+static struct eapol_callbacks eapol_cb =
+{
+	.get_config = eapol_sm_get_config,
+	.get_bool = eapol_sm_get_bool,
+	.set_bool = eapol_sm_set_bool,
+	.get_int = eapol_sm_get_int,
+	.set_int = eapol_sm_set_int,
+	.get_eapReqData = eapol_sm_get_eapReqData,
+};