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authorJouni Malinen <j@w1.fi>2009-11-29 18:03:28 (GMT)
committerJouni Malinen <j@w1.fi>2009-11-29 18:03:28 (GMT)
commit281c950be49e337cc85720f7eac066cb837aef5d (patch)
treee97ae460b950955488df28a0facdfca63042276c /src/eapol_auth/eapol_auth_sm.c
parenta2befd37ccaa8720ed563cb2dbf2dd56498a0b58 (diff)
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Move EAPOL authenticator state machine into src/eapol_auth
This is now completely independent from hostapd-specific code, so it can be moved to be under the src tree.
Diffstat (limited to 'src/eapol_auth/eapol_auth_sm.c')
-rw-r--r--src/eapol_auth/eapol_auth_sm.c1349
1 files changed, 1349 insertions, 0 deletions
diff --git a/src/eapol_auth/eapol_auth_sm.c b/src/eapol_auth/eapol_auth_sm.c
new file mode 100644
index 0000000..2703479
--- /dev/null
+++ b/src/eapol_auth/eapol_auth_sm.c
@@ -0,0 +1,1349 @@
+/*
+ * IEEE 802.1X-2004 Authenticator - EAPOL state machine
+ * Copyright (c) 2002-2009, 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.
+ */
+
+#include "includes.h"
+
+#include "common.h"
+#include "eapol_auth_sm.h"
+#include "eloop.h"
+#include "common/eapol_common.h"
+#include "eap_server/eap.h"
+#include "state_machine.h"
+#include "eap_common/eap_common.h"
+
+#define STATE_MACHINE_DATA struct eapol_state_machine
+#define STATE_MACHINE_DEBUG_PREFIX "IEEE 802.1X"
+#define STATE_MACHINE_ADDR sm->addr
+
+static struct eapol_callbacks eapol_cb;
+
+/* EAPOL state machines are described in IEEE Std 802.1X-2004, Chap. 8.2 */
+
+#define setPortAuthorized() \
+sm->eapol->cb.set_port_authorized(sm->eapol->conf.ctx, sm->sta, 1)
+#define setPortUnauthorized() \
+sm->eapol->cb.set_port_authorized(sm->eapol->conf.ctx, sm->sta, 0)
+
+/* procedures */
+#define txCannedFail() eapol_auth_tx_canned_eap(sm, 0)
+#define txCannedSuccess() eapol_auth_tx_canned_eap(sm, 1)
+#define txReq() eapol_auth_tx_req(sm)
+#define abortAuth() sm->eapol->cb.abort_auth(sm->eapol->conf.ctx, sm->sta)
+#define txKey() sm->eapol->cb.tx_key(sm->eapol->conf.ctx, sm->sta)
+#define processKey() do { } while (0)
+
+
+static void eapol_sm_step_run(struct eapol_state_machine *sm);
+static void eapol_sm_step_cb(void *eloop_ctx, void *timeout_ctx);
+static void eapol_auth_initialize(struct eapol_state_machine *sm);
+
+
+static void eapol_auth_logger(struct eapol_authenticator *eapol,
+ const u8 *addr, eapol_logger_level level,
+ const char *txt)
+{
+ if (eapol->cb.logger == NULL)
+ return;
+ eapol->cb.logger(eapol->conf.ctx, addr, level, txt);
+}
+
+
+static void eapol_auth_vlogger(struct eapol_authenticator *eapol,
+ const u8 *addr, eapol_logger_level level,
+ const char *fmt, ...)
+{
+ char *format;
+ int maxlen;
+ va_list ap;
+
+ if (eapol->cb.logger == NULL)
+ return;
+
+ maxlen = os_strlen(fmt) + 100;
+ format = os_malloc(maxlen);
+ if (!format)
+ return;
+
+ va_start(ap, fmt);
+ vsnprintf(format, maxlen, fmt, ap);
+ va_end(ap);
+
+ eapol_auth_logger(eapol, addr, level, format);
+
+ os_free(format);
+}
+
+
+static void eapol_auth_tx_canned_eap(struct eapol_state_machine *sm,
+ int success)
+{
+ struct eap_hdr eap;
+
+ os_memset(&eap, 0, sizeof(eap));
+
+ eap.code = success ? EAP_CODE_SUCCESS : EAP_CODE_FAILURE;
+ eap.identifier = ++sm->last_eap_id;
+ eap.length = host_to_be16(sizeof(eap));
+
+ eapol_auth_vlogger(sm->eapol, sm->addr, EAPOL_LOGGER_DEBUG,
+ "Sending canned EAP packet %s (identifier %d)",
+ success ? "SUCCESS" : "FAILURE", eap.identifier);
+ sm->eapol->cb.eapol_send(sm->eapol->conf.ctx, sm->sta,
+ IEEE802_1X_TYPE_EAP_PACKET,
+ (u8 *) &eap, sizeof(eap));
+ sm->dot1xAuthEapolFramesTx++;
+}
+
+
+static void eapol_auth_tx_req(struct eapol_state_machine *sm)
+{
+ if (sm->eap_if->eapReqData == NULL ||
+ wpabuf_len(sm->eap_if->eapReqData) < sizeof(struct eap_hdr)) {
+ eapol_auth_logger(sm->eapol, sm->addr,
+ EAPOL_LOGGER_DEBUG,
+ "TxReq called, but there is no EAP request "
+ "from authentication server");
+ return;
+ }
+
+ if (sm->flags & EAPOL_SM_WAIT_START) {
+ wpa_printf(MSG_DEBUG, "EAPOL: Drop EAPOL TX to " MACSTR
+ " while waiting for EAPOL-Start",
+ MAC2STR(sm->addr));
+ return;
+ }
+
+ sm->last_eap_id = eap_get_id(sm->eap_if->eapReqData);
+ eapol_auth_vlogger(sm->eapol, sm->addr, EAPOL_LOGGER_DEBUG,
+ "Sending EAP Packet (identifier %d)",
+ sm->last_eap_id);
+ sm->eapol->cb.eapol_send(sm->eapol->conf.ctx, sm->sta,
+ IEEE802_1X_TYPE_EAP_PACKET,
+ wpabuf_head(sm->eap_if->eapReqData),
+ wpabuf_len(sm->eap_if->eapReqData));
+ sm->dot1xAuthEapolFramesTx++;
+ if (eap_get_type(sm->eap_if->eapReqData) == EAP_TYPE_IDENTITY)
+ sm->dot1xAuthEapolReqIdFramesTx++;
+ else
+ sm->dot1xAuthEapolReqFramesTx++;
+}
+
+
+/**
+ * eapol_port_timers_tick - Port Timers state machine
+ * @eloop_ctx: struct eapol_state_machine *
+ * @timeout_ctx: Not used
+ *
+ * This statemachine is 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_state_machine *state = timeout_ctx;
+
+ if (state->aWhile > 0) {
+ state->aWhile--;
+ if (state->aWhile == 0) {
+ wpa_printf(MSG_DEBUG, "IEEE 802.1X: " MACSTR
+ " - aWhile --> 0",
+ MAC2STR(state->addr));
+ }
+ }
+
+ if (state->quietWhile > 0) {
+ state->quietWhile--;
+ if (state->quietWhile == 0) {
+ wpa_printf(MSG_DEBUG, "IEEE 802.1X: " MACSTR
+ " - quietWhile --> 0",
+ MAC2STR(state->addr));
+ }
+ }
+
+ if (state->reAuthWhen > 0) {
+ state->reAuthWhen--;
+ if (state->reAuthWhen == 0) {
+ wpa_printf(MSG_DEBUG, "IEEE 802.1X: " MACSTR
+ " - reAuthWhen --> 0",
+ MAC2STR(state->addr));
+ }
+ }
+
+ if (state->eap_if->retransWhile > 0) {
+ state->eap_if->retransWhile--;
+ if (state->eap_if->retransWhile == 0) {
+ wpa_printf(MSG_DEBUG, "IEEE 802.1X: " MACSTR
+ " - (EAP) retransWhile --> 0",
+ MAC2STR(state->addr));
+ }
+ }
+
+ eapol_sm_step_run(state);
+
+ eloop_register_timeout(1, 0, eapol_port_timers_tick, eloop_ctx, state);
+}
+
+
+
+/* Authenticator PAE state machine */
+
+SM_STATE(AUTH_PAE, INITIALIZE)
+{
+ SM_ENTRY_MA(AUTH_PAE, INITIALIZE, auth_pae);
+ sm->portMode = Auto;
+}
+
+
+SM_STATE(AUTH_PAE, DISCONNECTED)
+{
+ int from_initialize = sm->auth_pae_state == AUTH_PAE_INITIALIZE;
+
+ if (sm->eapolLogoff) {
+ if (sm->auth_pae_state == AUTH_PAE_CONNECTING)
+ sm->authEapLogoffsWhileConnecting++;
+ else if (sm->auth_pae_state == AUTH_PAE_AUTHENTICATED)
+ sm->authAuthEapLogoffWhileAuthenticated++;
+ }
+
+ SM_ENTRY_MA(AUTH_PAE, DISCONNECTED, auth_pae);
+
+ sm->authPortStatus = Unauthorized;
+ setPortUnauthorized();
+ sm->reAuthCount = 0;
+ sm->eapolLogoff = FALSE;
+ if (!from_initialize) {
+ sm->eapol->cb.finished(sm->eapol->conf.ctx, sm->sta, 0,
+ sm->flags & EAPOL_SM_PREAUTH);
+ }
+}
+
+
+SM_STATE(AUTH_PAE, RESTART)
+{
+ if (sm->auth_pae_state == AUTH_PAE_AUTHENTICATED) {
+ if (sm->reAuthenticate)
+ sm->authAuthReauthsWhileAuthenticated++;
+ if (sm->eapolStart)
+ sm->authAuthEapStartsWhileAuthenticated++;
+ if (sm->eapolLogoff)
+ sm->authAuthEapLogoffWhileAuthenticated++;
+ }
+
+ SM_ENTRY_MA(AUTH_PAE, RESTART, auth_pae);
+
+ sm->eap_if->eapRestart = TRUE;
+}
+
+
+SM_STATE(AUTH_PAE, CONNECTING)
+{
+ if (sm->auth_pae_state != AUTH_PAE_CONNECTING)
+ sm->authEntersConnecting++;
+
+ SM_ENTRY_MA(AUTH_PAE, CONNECTING, auth_pae);
+
+ sm->reAuthenticate = FALSE;
+ sm->reAuthCount++;
+}
+
+
+SM_STATE(AUTH_PAE, HELD)
+{
+ if (sm->auth_pae_state == AUTH_PAE_AUTHENTICATING && sm->authFail)
+ sm->authAuthFailWhileAuthenticating++;
+
+ SM_ENTRY_MA(AUTH_PAE, HELD, auth_pae);
+
+ sm->authPortStatus = Unauthorized;
+ setPortUnauthorized();
+ sm->quietWhile = sm->quietPeriod;
+ sm->eapolLogoff = FALSE;
+
+ eapol_auth_vlogger(sm->eapol, sm->addr, EAPOL_LOGGER_WARNING,
+ "authentication failed - EAP type: %d (%s)",
+ sm->eap_type_authsrv,
+ eap_server_get_name(0, sm->eap_type_authsrv));
+ if (sm->eap_type_authsrv != sm->eap_type_supp) {
+ eapol_auth_vlogger(sm->eapol, sm->addr, EAPOL_LOGGER_INFO,
+ "Supplicant used different EAP type: "
+ "%d (%s)", sm->eap_type_supp,
+ eap_server_get_name(0, sm->eap_type_supp));
+ }
+ sm->eapol->cb.finished(sm->eapol->conf.ctx, sm->sta, 0,
+ sm->flags & EAPOL_SM_PREAUTH);
+}
+
+
+SM_STATE(AUTH_PAE, AUTHENTICATED)
+{
+ char *extra = "";
+
+ if (sm->auth_pae_state == AUTH_PAE_AUTHENTICATING && sm->authSuccess)
+ sm->authAuthSuccessesWhileAuthenticating++;
+
+ SM_ENTRY_MA(AUTH_PAE, AUTHENTICATED, auth_pae);
+
+ sm->authPortStatus = Authorized;
+ setPortAuthorized();
+ sm->reAuthCount = 0;
+ if (sm->flags & EAPOL_SM_PREAUTH)
+ extra = " (pre-authentication)";
+ else if (sm->flags & EAPOL_SM_FROM_PMKSA_CACHE)
+ extra = " (PMKSA cache)";
+ eapol_auth_vlogger(sm->eapol, sm->addr, EAPOL_LOGGER_INFO,
+ "authenticated - EAP type: %d (%s)%s",
+ sm->eap_type_authsrv,
+ eap_server_get_name(0, sm->eap_type_authsrv),
+ extra);
+ sm->eapol->cb.finished(sm->eapol->conf.ctx, sm->sta, 1,
+ sm->flags & EAPOL_SM_PREAUTH);
+}
+
+
+SM_STATE(AUTH_PAE, AUTHENTICATING)
+{
+ SM_ENTRY_MA(AUTH_PAE, AUTHENTICATING, auth_pae);
+
+ sm->eapolStart = FALSE;
+ sm->authSuccess = FALSE;
+ sm->authFail = FALSE;
+ sm->authTimeout = FALSE;
+ sm->authStart = TRUE;
+ sm->keyRun = FALSE;
+ sm->keyDone = FALSE;
+}
+
+
+SM_STATE(AUTH_PAE, ABORTING)
+{
+ if (sm->auth_pae_state == AUTH_PAE_AUTHENTICATING) {
+ if (sm->authTimeout)
+ sm->authAuthTimeoutsWhileAuthenticating++;
+ if (sm->eapolStart)
+ sm->authAuthEapStartsWhileAuthenticating++;
+ if (sm->eapolLogoff)
+ sm->authAuthEapLogoffWhileAuthenticating++;
+ }
+
+ SM_ENTRY_MA(AUTH_PAE, ABORTING, auth_pae);
+
+ sm->authAbort = TRUE;
+ sm->keyRun = FALSE;
+ sm->keyDone = FALSE;
+}
+
+
+SM_STATE(AUTH_PAE, FORCE_AUTH)
+{
+ SM_ENTRY_MA(AUTH_PAE, FORCE_AUTH, auth_pae);
+
+ sm->authPortStatus = Authorized;
+ setPortAuthorized();
+ sm->portMode = ForceAuthorized;
+ sm->eapolStart = FALSE;
+ txCannedSuccess();
+}
+
+
+SM_STATE(AUTH_PAE, FORCE_UNAUTH)
+{
+ SM_ENTRY_MA(AUTH_PAE, FORCE_UNAUTH, auth_pae);
+
+ sm->authPortStatus = Unauthorized;
+ setPortUnauthorized();
+ sm->portMode = ForceUnauthorized;
+ sm->eapolStart = FALSE;
+ txCannedFail();
+}
+
+
+SM_STEP(AUTH_PAE)
+{
+ if ((sm->portControl == Auto && sm->portMode != sm->portControl) ||
+ sm->initialize || !sm->eap_if->portEnabled)
+ SM_ENTER_GLOBAL(AUTH_PAE, INITIALIZE);
+ else if (sm->portControl == ForceAuthorized &&
+ sm->portMode != sm->portControl &&
+ !(sm->initialize || !sm->eap_if->portEnabled))
+ SM_ENTER_GLOBAL(AUTH_PAE, FORCE_AUTH);
+ else if (sm->portControl == ForceUnauthorized &&
+ sm->portMode != sm->portControl &&
+ !(sm->initialize || !sm->eap_if->portEnabled))
+ SM_ENTER_GLOBAL(AUTH_PAE, FORCE_UNAUTH);
+ else {
+ switch (sm->auth_pae_state) {
+ case AUTH_PAE_INITIALIZE:
+ SM_ENTER(AUTH_PAE, DISCONNECTED);
+ break;
+ case AUTH_PAE_DISCONNECTED:
+ SM_ENTER(AUTH_PAE, RESTART);
+ break;
+ case AUTH_PAE_RESTART:
+ if (!sm->eap_if->eapRestart)
+ SM_ENTER(AUTH_PAE, CONNECTING);
+ break;
+ case AUTH_PAE_HELD:
+ if (sm->quietWhile == 0)
+ SM_ENTER(AUTH_PAE, RESTART);
+ break;
+ case AUTH_PAE_CONNECTING:
+ if (sm->eapolLogoff || sm->reAuthCount > sm->reAuthMax)
+ SM_ENTER(AUTH_PAE, DISCONNECTED);
+ else if ((sm->eap_if->eapReq &&
+ sm->reAuthCount <= sm->reAuthMax) ||
+ sm->eap_if->eapSuccess || sm->eap_if->eapFail)
+ SM_ENTER(AUTH_PAE, AUTHENTICATING);
+ break;
+ case AUTH_PAE_AUTHENTICATED:
+ if (sm->eapolStart || sm->reAuthenticate)
+ SM_ENTER(AUTH_PAE, RESTART);
+ else if (sm->eapolLogoff || !sm->portValid)
+ SM_ENTER(AUTH_PAE, DISCONNECTED);
+ break;
+ case AUTH_PAE_AUTHENTICATING:
+ if (sm->authSuccess && sm->portValid)
+ SM_ENTER(AUTH_PAE, AUTHENTICATED);
+ else if (sm->authFail ||
+ (sm->keyDone && !sm->portValid))
+ SM_ENTER(AUTH_PAE, HELD);
+ else if (sm->eapolStart || sm->eapolLogoff ||
+ sm->authTimeout)
+ SM_ENTER(AUTH_PAE, ABORTING);
+ break;
+ case AUTH_PAE_ABORTING:
+ if (sm->eapolLogoff && !sm->authAbort)
+ SM_ENTER(AUTH_PAE, DISCONNECTED);
+ else if (!sm->eapolLogoff && !sm->authAbort)
+ SM_ENTER(AUTH_PAE, RESTART);
+ break;
+ case AUTH_PAE_FORCE_AUTH:
+ if (sm->eapolStart)
+ SM_ENTER(AUTH_PAE, FORCE_AUTH);
+ break;
+ case AUTH_PAE_FORCE_UNAUTH:
+ if (sm->eapolStart)
+ SM_ENTER(AUTH_PAE, FORCE_UNAUTH);
+ break;
+ }
+ }
+}
+
+
+
+/* Backend Authentication state machine */
+
+SM_STATE(BE_AUTH, INITIALIZE)
+{
+ SM_ENTRY_MA(BE_AUTH, INITIALIZE, be_auth);
+
+ abortAuth();
+ sm->eap_if->eapNoReq = FALSE;
+ sm->authAbort = FALSE;
+}
+
+
+SM_STATE(BE_AUTH, REQUEST)
+{
+ SM_ENTRY_MA(BE_AUTH, REQUEST, be_auth);
+
+ txReq();
+ sm->eap_if->eapReq = FALSE;
+ sm->backendOtherRequestsToSupplicant++;
+
+ /*
+ * Clearing eapolEap here is not specified in IEEE Std 802.1X-2004, but
+ * it looks like this would be logical thing to do there since the old
+ * EAP response would not be valid anymore after the new EAP request
+ * was sent out.
+ *
+ * A race condition has been reported, in which hostapd ended up
+ * sending out EAP-Response/Identity as a response to the first
+ * EAP-Request from the main EAP method. This can be avoided by
+ * clearing eapolEap here.
+ */
+ sm->eapolEap = FALSE;
+}
+
+
+SM_STATE(BE_AUTH, RESPONSE)
+{
+ SM_ENTRY_MA(BE_AUTH, RESPONSE, be_auth);
+
+ sm->authTimeout = FALSE;
+ sm->eapolEap = FALSE;
+ sm->eap_if->eapNoReq = FALSE;
+ sm->aWhile = sm->serverTimeout;
+ sm->eap_if->eapResp = TRUE;
+ /* sendRespToServer(); */
+ sm->backendResponses++;
+}
+
+
+SM_STATE(BE_AUTH, SUCCESS)
+{
+ SM_ENTRY_MA(BE_AUTH, SUCCESS, be_auth);
+
+ txReq();
+ sm->authSuccess = TRUE;
+ sm->keyRun = TRUE;
+}
+
+
+SM_STATE(BE_AUTH, FAIL)
+{
+ SM_ENTRY_MA(BE_AUTH, FAIL, be_auth);
+
+ txReq();
+ sm->authFail = TRUE;
+}
+
+
+SM_STATE(BE_AUTH, TIMEOUT)
+{
+ SM_ENTRY_MA(BE_AUTH, TIMEOUT, be_auth);
+
+ sm->authTimeout = TRUE;
+}
+
+
+SM_STATE(BE_AUTH, IDLE)
+{
+ SM_ENTRY_MA(BE_AUTH, IDLE, be_auth);
+
+ sm->authStart = FALSE;
+}
+
+
+SM_STATE(BE_AUTH, IGNORE)
+{
+ SM_ENTRY_MA(BE_AUTH, IGNORE, be_auth);
+
+ sm->eap_if->eapNoReq = FALSE;
+}
+
+
+SM_STEP(BE_AUTH)
+{
+ if (sm->portControl != Auto || sm->initialize || sm->authAbort) {
+ SM_ENTER_GLOBAL(BE_AUTH, INITIALIZE);
+ return;
+ }
+
+ switch (sm->be_auth_state) {
+ case BE_AUTH_INITIALIZE:
+ SM_ENTER(BE_AUTH, IDLE);
+ break;
+ case BE_AUTH_REQUEST:
+ if (sm->eapolEap)
+ SM_ENTER(BE_AUTH, RESPONSE);
+ else if (sm->eap_if->eapReq)
+ SM_ENTER(BE_AUTH, REQUEST);
+ else if (sm->eap_if->eapTimeout)
+ SM_ENTER(BE_AUTH, TIMEOUT);
+ break;
+ case BE_AUTH_RESPONSE:
+ if (sm->eap_if->eapNoReq)
+ SM_ENTER(BE_AUTH, IGNORE);
+ if (sm->eap_if->eapReq) {
+ sm->backendAccessChallenges++;
+ SM_ENTER(BE_AUTH, REQUEST);
+ } else if (sm->aWhile == 0)
+ SM_ENTER(BE_AUTH, TIMEOUT);
+ else if (sm->eap_if->eapFail) {
+ sm->backendAuthFails++;
+ SM_ENTER(BE_AUTH, FAIL);
+ } else if (sm->eap_if->eapSuccess) {
+ sm->backendAuthSuccesses++;
+ SM_ENTER(BE_AUTH, SUCCESS);
+ }
+ break;
+ case BE_AUTH_SUCCESS:
+ SM_ENTER(BE_AUTH, IDLE);
+ break;
+ case BE_AUTH_FAIL:
+ SM_ENTER(BE_AUTH, IDLE);
+ break;
+ case BE_AUTH_TIMEOUT:
+ SM_ENTER(BE_AUTH, IDLE);
+ break;
+ case BE_AUTH_IDLE:
+ if (sm->eap_if->eapFail && sm->authStart)
+ SM_ENTER(BE_AUTH, FAIL);
+ else if (sm->eap_if->eapReq && sm->authStart)
+ SM_ENTER(BE_AUTH, REQUEST);
+ else if (sm->eap_if->eapSuccess && sm->authStart)
+ SM_ENTER(BE_AUTH, SUCCESS);
+ break;
+ case BE_AUTH_IGNORE:
+ if (sm->eapolEap)
+ SM_ENTER(BE_AUTH, RESPONSE);
+ else if (sm->eap_if->eapReq)
+ SM_ENTER(BE_AUTH, REQUEST);
+ else if (sm->eap_if->eapTimeout)
+ SM_ENTER(BE_AUTH, TIMEOUT);
+ break;
+ }
+}
+
+
+
+/* Reauthentication Timer state machine */
+
+SM_STATE(REAUTH_TIMER, INITIALIZE)
+{
+ SM_ENTRY_MA(REAUTH_TIMER, INITIALIZE, reauth_timer);
+
+ sm->reAuthWhen = sm->reAuthPeriod;
+}
+
+
+SM_STATE(REAUTH_TIMER, REAUTHENTICATE)
+{
+ SM_ENTRY_MA(REAUTH_TIMER, REAUTHENTICATE, reauth_timer);
+
+ sm->reAuthenticate = TRUE;
+ sm->eapol->cb.eapol_event(sm->eapol->conf.ctx, sm->sta,
+ EAPOL_AUTH_REAUTHENTICATE);
+}
+
+
+SM_STEP(REAUTH_TIMER)
+{
+ if (sm->portControl != Auto || sm->initialize ||
+ sm->authPortStatus == Unauthorized || !sm->reAuthEnabled) {
+ SM_ENTER_GLOBAL(REAUTH_TIMER, INITIALIZE);
+ return;
+ }
+
+ switch (sm->reauth_timer_state) {
+ case REAUTH_TIMER_INITIALIZE:
+ if (sm->reAuthWhen == 0)
+ SM_ENTER(REAUTH_TIMER, REAUTHENTICATE);
+ break;
+ case REAUTH_TIMER_REAUTHENTICATE:
+ SM_ENTER(REAUTH_TIMER, INITIALIZE);
+ break;
+ }
+}
+
+
+
+/* Authenticator Key Transmit state machine */
+
+SM_STATE(AUTH_KEY_TX, NO_KEY_TRANSMIT)
+{
+ SM_ENTRY_MA(AUTH_KEY_TX, NO_KEY_TRANSMIT, auth_key_tx);
+}
+
+
+SM_STATE(AUTH_KEY_TX, KEY_TRANSMIT)
+{
+ SM_ENTRY_MA(AUTH_KEY_TX, KEY_TRANSMIT, auth_key_tx);
+
+ txKey();
+ sm->eap_if->eapKeyAvailable = FALSE;
+ sm->keyDone = TRUE;
+}
+
+
+SM_STEP(AUTH_KEY_TX)
+{
+ if (sm->initialize || sm->portControl != Auto) {
+ SM_ENTER_GLOBAL(AUTH_KEY_TX, NO_KEY_TRANSMIT);
+ return;
+ }
+
+ switch (sm->auth_key_tx_state) {
+ case AUTH_KEY_TX_NO_KEY_TRANSMIT:
+ if (sm->keyTxEnabled && sm->eap_if->eapKeyAvailable &&
+ sm->keyRun && !(sm->flags & EAPOL_SM_USES_WPA))
+ SM_ENTER(AUTH_KEY_TX, KEY_TRANSMIT);
+ break;
+ case AUTH_KEY_TX_KEY_TRANSMIT:
+ if (!sm->keyTxEnabled || !sm->keyRun)
+ SM_ENTER(AUTH_KEY_TX, NO_KEY_TRANSMIT);
+ else if (sm->eap_if->eapKeyAvailable)
+ SM_ENTER(AUTH_KEY_TX, KEY_TRANSMIT);
+ break;
+ }
+}
+
+
+
+/* Key Receive state machine */
+
+SM_STATE(KEY_RX, NO_KEY_RECEIVE)
+{
+ SM_ENTRY_MA(KEY_RX, NO_KEY_RECEIVE, key_rx);
+}
+
+
+SM_STATE(KEY_RX, KEY_RECEIVE)
+{
+ SM_ENTRY_MA(KEY_RX, KEY_RECEIVE, key_rx);
+
+ processKey();
+ sm->rxKey = FALSE;
+}
+
+
+SM_STEP(KEY_RX)
+{
+ if (sm->initialize || !sm->eap_if->portEnabled) {
+ SM_ENTER_GLOBAL(KEY_RX, NO_KEY_RECEIVE);
+ return;
+ }
+
+ switch (sm->key_rx_state) {
+ 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;
+ }
+}
+
+
+
+/* Controlled Directions state machine */
+
+SM_STATE(CTRL_DIR, FORCE_BOTH)
+{
+ SM_ENTRY_MA(CTRL_DIR, FORCE_BOTH, ctrl_dir);
+ sm->operControlledDirections = Both;
+}
+
+
+SM_STATE(CTRL_DIR, IN_OR_BOTH)
+{
+ SM_ENTRY_MA(CTRL_DIR, IN_OR_BOTH, ctrl_dir);
+ sm->operControlledDirections = sm->adminControlledDirections;
+}
+
+
+SM_STEP(CTRL_DIR)
+{
+ if (sm->initialize) {
+ SM_ENTER_GLOBAL(CTRL_DIR, IN_OR_BOTH);
+ return;
+ }
+
+ switch (sm->ctrl_dir_state) {
+ case CTRL_DIR_FORCE_BOTH:
+ if (sm->eap_if->portEnabled && sm->operEdge)
+ SM_ENTER(CTRL_DIR, IN_OR_BOTH);
+ break;
+ case CTRL_DIR_IN_OR_BOTH:
+ if (sm->operControlledDirections !=
+ sm->adminControlledDirections)
+ SM_ENTER(CTRL_DIR, IN_OR_BOTH);
+ if (!sm->eap_if->portEnabled || !sm->operEdge)
+ SM_ENTER(CTRL_DIR, FORCE_BOTH);
+ break;
+ }
+}
+
+
+
+struct eapol_state_machine *
+eapol_auth_alloc(struct eapol_authenticator *eapol, const u8 *addr,
+ int flags, const struct wpabuf *assoc_wps_ie, void *sta_ctx)
+{
+ struct eapol_state_machine *sm;
+ struct eap_config eap_conf;
+
+ if (eapol == NULL)
+ return NULL;
+
+ sm = os_zalloc(sizeof(*sm));
+ if (sm == NULL) {
+ wpa_printf(MSG_DEBUG, "IEEE 802.1X state machine allocation "
+ "failed");
+ return NULL;
+ }
+ sm->radius_identifier = -1;
+ os_memcpy(sm->addr, addr, ETH_ALEN);
+ sm->flags = flags;
+
+ sm->eapol = eapol;
+ sm->sta = sta_ctx;
+
+ /* Set default values for state machine constants */
+ sm->auth_pae_state = AUTH_PAE_INITIALIZE;
+ sm->quietPeriod = AUTH_PAE_DEFAULT_quietPeriod;
+ sm->reAuthMax = AUTH_PAE_DEFAULT_reAuthMax;
+
+ sm->be_auth_state = BE_AUTH_INITIALIZE;
+ sm->serverTimeout = BE_AUTH_DEFAULT_serverTimeout;
+
+ sm->reauth_timer_state = REAUTH_TIMER_INITIALIZE;
+ sm->reAuthPeriod = eapol->conf.eap_reauth_period;
+ sm->reAuthEnabled = eapol->conf.eap_reauth_period > 0 ? TRUE : FALSE;
+
+ sm->auth_key_tx_state = AUTH_KEY_TX_NO_KEY_TRANSMIT;
+
+ sm->key_rx_state = KEY_RX_NO_KEY_RECEIVE;
+
+ sm->ctrl_dir_state = CTRL_DIR_IN_OR_BOTH;
+
+ sm->portControl = Auto;
+
+ if (!eapol->conf.wpa &&
+ (eapol->default_wep_key || eapol->conf.individual_wep_key_len > 0))
+ sm->keyTxEnabled = TRUE;
+ else
+ sm->keyTxEnabled = FALSE;
+ if (eapol->conf.wpa)
+ sm->portValid = FALSE;
+ else
+ sm->portValid = TRUE;
+
+ os_memset(&eap_conf, 0, sizeof(eap_conf));
+ eap_conf.eap_server = eapol->conf.eap_server;
+ eap_conf.ssl_ctx = eapol->conf.ssl_ctx;
+ eap_conf.eap_sim_db_priv = eapol->conf.eap_sim_db_priv;
+ eap_conf.pac_opaque_encr_key = eapol->conf.pac_opaque_encr_key;
+ eap_conf.eap_fast_a_id = eapol->conf.eap_fast_a_id;
+ eap_conf.eap_fast_a_id_len = eapol->conf.eap_fast_a_id_len;
+ eap_conf.eap_fast_a_id_info = eapol->conf.eap_fast_a_id_info;
+ eap_conf.eap_fast_prov = eapol->conf.eap_fast_prov;
+ eap_conf.pac_key_lifetime = eapol->conf.pac_key_lifetime;
+ eap_conf.pac_key_refresh_time = eapol->conf.pac_key_refresh_time;
+ eap_conf.eap_sim_aka_result_ind = eapol->conf.eap_sim_aka_result_ind;
+ eap_conf.tnc = eapol->conf.tnc;
+ eap_conf.wps = eapol->conf.wps;
+ eap_conf.assoc_wps_ie = assoc_wps_ie;
+ eap_conf.peer_addr = addr;
+ sm->eap = eap_server_sm_init(sm, &eapol_cb, &eap_conf);
+ if (sm->eap == NULL) {
+ eapol_auth_free(sm);
+ return NULL;
+ }
+ sm->eap_if = eap_get_interface(sm->eap);
+
+ eapol_auth_initialize(sm);
+
+ return sm;
+}
+
+
+void eapol_auth_free(struct eapol_state_machine *sm)
+{
+ if (sm == NULL)
+ return;
+
+ eloop_cancel_timeout(eapol_port_timers_tick, NULL, sm);
+ eloop_cancel_timeout(eapol_sm_step_cb, sm, NULL);
+ if (sm->eap)
+ eap_server_sm_deinit(sm->eap);
+ os_free(sm);
+}
+
+
+static int eapol_sm_sta_entry_alive(struct eapol_authenticator *eapol,
+ const u8 *addr)
+{
+ return eapol->cb.sta_entry_alive(eapol->conf.ctx, addr);
+}
+
+
+static void eapol_sm_step_run(struct eapol_state_machine *sm)
+{
+ struct eapol_authenticator *eapol = sm->eapol;
+ u8 addr[ETH_ALEN];
+ unsigned int prev_auth_pae, prev_be_auth, prev_reauth_timer,
+ prev_auth_key_tx, prev_key_rx, prev_ctrl_dir;
+ int max_steps = 100;
+
+ os_memcpy(addr, sm->addr, ETH_ALEN);
+
+ /*
+ * Allow EAPOL state machines to run as long as there are state
+ * changes, but exit and return here through event loop if more than
+ * 100 steps is needed as a precaution against infinite loops inside
+ * eloop callback.
+ */
+restart:
+ prev_auth_pae = sm->auth_pae_state;
+ prev_be_auth = sm->be_auth_state;
+ prev_reauth_timer = sm->reauth_timer_state;
+ prev_auth_key_tx = sm->auth_key_tx_state;
+ prev_key_rx = sm->key_rx_state;
+ prev_ctrl_dir = sm->ctrl_dir_state;
+
+ SM_STEP_RUN(AUTH_PAE);
+ if (sm->initializing || eapol_sm_sta_entry_alive(eapol, addr))
+ SM_STEP_RUN(BE_AUTH);
+ if (sm->initializing || eapol_sm_sta_entry_alive(eapol, addr))
+ SM_STEP_RUN(REAUTH_TIMER);
+ if (sm->initializing || eapol_sm_sta_entry_alive(eapol, addr))
+ SM_STEP_RUN(AUTH_KEY_TX);
+ if (sm->initializing || eapol_sm_sta_entry_alive(eapol, addr))
+ SM_STEP_RUN(KEY_RX);
+ if (sm->initializing || eapol_sm_sta_entry_alive(eapol, addr))
+ SM_STEP_RUN(CTRL_DIR);
+
+ if (prev_auth_pae != sm->auth_pae_state ||
+ prev_be_auth != sm->be_auth_state ||
+ prev_reauth_timer != sm->reauth_timer_state ||
+ prev_auth_key_tx != sm->auth_key_tx_state ||
+ prev_key_rx != sm->key_rx_state ||
+ prev_ctrl_dir != sm->ctrl_dir_state) {
+ if (--max_steps > 0)
+ goto restart;
+ /* Re-run from eloop timeout */
+ eapol_auth_step(sm);
+ return;
+ }
+
+ if (eapol_sm_sta_entry_alive(eapol, addr) && sm->eap) {
+ if (eap_server_sm_step(sm->eap)) {
+ if (--max_steps > 0)
+ goto restart;
+ /* Re-run from eloop timeout */
+ eapol_auth_step(sm);
+ return;
+ }
+
+ /* TODO: find a better location for this */
+ if (sm->eap_if->aaaEapResp) {
+ sm->eap_if->aaaEapResp = FALSE;
+ if (sm->eap_if->aaaEapRespData == NULL) {
+ wpa_printf(MSG_DEBUG, "EAPOL: aaaEapResp set, "
+ "but no aaaEapRespData available");
+ return;
+ }
+ sm->eapol->cb.aaa_send(
+ sm->eapol->conf.ctx, sm->sta,
+ wpabuf_head(sm->eap_if->aaaEapRespData),
+ wpabuf_len(sm->eap_if->aaaEapRespData));
+ }
+ }
+
+ if (eapol_sm_sta_entry_alive(eapol, addr))
+ sm->eapol->cb.eapol_event(sm->eapol->conf.ctx, sm->sta,
+ EAPOL_AUTH_SM_CHANGE);
+}
+
+
+static void eapol_sm_step_cb(void *eloop_ctx, void *timeout_ctx)
+{
+ struct eapol_state_machine *sm = eloop_ctx;
+ eapol_sm_step_run(sm);
+}
+
+
+/**
+ * eapol_auth_step - Advance EAPOL state machines
+ * @sm: EAPOL state machine
+ *
+ * This function is called to advance EAPOL state machines after any change
+ * that could affect their state.
+ */
+void eapol_auth_step(struct eapol_state_machine *sm)
+{
+ /*
+ * Run eapol_sm_step_run from a registered timeout to make sure that
+ * other possible timeouts/events are processed and to avoid long
+ * function call chains.
+ */
+
+ eloop_register_timeout(0, 0, eapol_sm_step_cb, sm, NULL);
+}
+
+
+static void eapol_auth_initialize(struct eapol_state_machine *sm)
+{
+ sm->initializing = TRUE;
+ /* Initialize the state machines by asserting initialize and then
+ * deasserting it after one step */
+ sm->initialize = TRUE;
+ eapol_sm_step_run(sm);
+ sm->initialize = FALSE;
+ eapol_sm_step_run(sm);
+ sm->initializing = FALSE;
+
+ /* Start one second tick for port timers state machine */
+ eloop_cancel_timeout(eapol_port_timers_tick, NULL, sm);
+ eloop_register_timeout(1, 0, eapol_port_timers_tick, NULL, sm);
+}
+
+
+#ifdef HOSTAPD_DUMP_STATE
+static inline const char * port_type_txt(PortTypes pt)
+{
+ switch (pt) {
+ case ForceUnauthorized: return "ForceUnauthorized";
+ case ForceAuthorized: return "ForceAuthorized";
+ case Auto: return "Auto";
+ default: return "Unknown";
+ }
+}
+
+
+static inline const char * port_state_txt(PortState ps)
+{
+ switch (ps) {
+ case Unauthorized: return "Unauthorized";
+ case Authorized: return "Authorized";
+ default: return "Unknown";
+ }
+}
+
+
+static inline const char * ctrl_dir_txt(ControlledDirection dir)
+{
+ switch (dir) {
+ case Both: return "Both";
+ case In: return "In";
+ default: return "Unknown";
+ }
+}
+
+
+static inline const char * auth_pae_state_txt(int s)
+{
+ switch (s) {
+ case AUTH_PAE_INITIALIZE: return "INITIALIZE";
+ case AUTH_PAE_DISCONNECTED: return "DISCONNECTED";
+ case AUTH_PAE_CONNECTING: return "CONNECTING";
+ case AUTH_PAE_AUTHENTICATING: return "AUTHENTICATING";
+ case AUTH_PAE_AUTHENTICATED: return "AUTHENTICATED";
+ case AUTH_PAE_ABORTING: return "ABORTING";
+ case AUTH_PAE_HELD: return "HELD";
+ case AUTH_PAE_FORCE_AUTH: return "FORCE_AUTH";
+ case AUTH_PAE_FORCE_UNAUTH: return "FORCE_UNAUTH";
+ case AUTH_PAE_RESTART: return "RESTART";
+ default: return "Unknown";
+ }
+}
+
+
+static inline const char * be_auth_state_txt(int s)
+{
+ switch (s) {
+ case BE_AUTH_REQUEST: return "REQUEST";
+ case BE_AUTH_RESPONSE: return "RESPONSE";
+ case BE_AUTH_SUCCESS: return "SUCCESS";
+ case BE_AUTH_FAIL: return "FAIL";
+ case BE_AUTH_TIMEOUT: return "TIMEOUT";
+ case BE_AUTH_IDLE: return "IDLE";
+ case BE_AUTH_INITIALIZE: return "INITIALIZE";
+ case BE_AUTH_IGNORE: return "IGNORE";
+ default: return "Unknown";
+ }
+}
+
+
+static inline const char * reauth_timer_state_txt(int s)
+{
+ switch (s) {
+ case REAUTH_TIMER_INITIALIZE: return "INITIALIZE";
+ case REAUTH_TIMER_REAUTHENTICATE: return "REAUTHENTICATE";
+ default: return "Unknown";
+ }
+}
+
+
+static inline const char * auth_key_tx_state_txt(int s)
+{
+ switch (s) {
+ case AUTH_KEY_TX_NO_KEY_TRANSMIT: return "NO_KEY_TRANSMIT";
+ case AUTH_KEY_TX_KEY_TRANSMIT: return "KEY_TRANSMIT";
+ default: return "Unknown";
+ }
+}
+
+
+static inline const char * key_rx_state_txt(int s)
+{
+ switch (s) {
+ case KEY_RX_NO_KEY_RECEIVE: return "NO_KEY_RECEIVE";
+ case KEY_RX_KEY_RECEIVE: return "KEY_RECEIVE";
+ default: return "Unknown";
+ }
+}
+
+
+static inline const char * ctrl_dir_state_txt(int s)
+{
+ switch (s) {
+ case CTRL_DIR_FORCE_BOTH: return "FORCE_BOTH";
+ case CTRL_DIR_IN_OR_BOTH: return "IN_OR_BOTH";
+ default: return "Unknown";
+ }
+}
+
+
+void eapol_auth_dump_state(FILE *f, const char *prefix,
+ struct eapol_state_machine *sm)
+{
+ fprintf(f, "%sEAPOL state machine:\n", prefix);
+ fprintf(f, "%s aWhile=%d quietWhile=%d reAuthWhen=%d\n", prefix,
+ sm->aWhile, sm->quietWhile, sm->reAuthWhen);
+#define _SB(b) ((b) ? "TRUE" : "FALSE")
+ fprintf(f,
+ "%s authAbort=%s authFail=%s authPortStatus=%s authStart=%s\n"
+ "%s authTimeout=%s authSuccess=%s eapFail=%s eapolEap=%s\n"
+ "%s eapSuccess=%s eapTimeout=%s initialize=%s "
+ "keyAvailable=%s\n"
+ "%s keyDone=%s keyRun=%s keyTxEnabled=%s portControl=%s\n"
+ "%s portEnabled=%s portValid=%s reAuthenticate=%s\n",
+ prefix, _SB(sm->authAbort), _SB(sm->authFail),
+ port_state_txt(sm->authPortStatus), _SB(sm->authStart),
+ prefix, _SB(sm->authTimeout), _SB(sm->authSuccess),
+ _SB(sm->eap_if->eapFail), _SB(sm->eapolEap),
+ prefix, _SB(sm->eap_if->eapSuccess),
+ _SB(sm->eap_if->eapTimeout),
+ _SB(sm->initialize), _SB(sm->eap_if->eapKeyAvailable),
+ prefix, _SB(sm->keyDone), _SB(sm->keyRun),
+ _SB(sm->keyTxEnabled), port_type_txt(sm->portControl),
+ prefix, _SB(sm->eap_if->portEnabled), _SB(sm->portValid),
+ _SB(sm->reAuthenticate));
+
+ fprintf(f, "%s Authenticator PAE:\n"
+ "%s state=%s\n"
+ "%s eapolLogoff=%s eapolStart=%s eapRestart=%s\n"
+ "%s portMode=%s reAuthCount=%d\n"
+ "%s quietPeriod=%d reAuthMax=%d\n"
+ "%s authEntersConnecting=%d\n"
+ "%s authEapLogoffsWhileConnecting=%d\n"
+ "%s authEntersAuthenticating=%d\n"
+ "%s authAuthSuccessesWhileAuthenticating=%d\n"
+ "%s authAuthTimeoutsWhileAuthenticating=%d\n"
+ "%s authAuthFailWhileAuthenticating=%d\n"
+ "%s authAuthEapStartsWhileAuthenticating=%d\n"
+ "%s authAuthEapLogoffWhileAuthenticating=%d\n"
+ "%s authAuthReauthsWhileAuthenticated=%d\n"
+ "%s authAuthEapStartsWhileAuthenticated=%d\n"
+ "%s authAuthEapLogoffWhileAuthenticated=%d\n",
+ prefix, prefix, auth_pae_state_txt(sm->auth_pae_state), prefix,
+ _SB(sm->eapolLogoff), _SB(sm->eapolStart),
+ _SB(sm->eap_if->eapRestart),
+ prefix, port_type_txt(sm->portMode), sm->reAuthCount,
+ prefix, sm->quietPeriod, sm->reAuthMax,
+ prefix, sm->authEntersConnecting,
+ prefix, sm->authEapLogoffsWhileConnecting,
+ prefix, sm->authEntersAuthenticating,
+ prefix, sm->authAuthSuccessesWhileAuthenticating,
+ prefix, sm->authAuthTimeoutsWhileAuthenticating,
+ prefix, sm->authAuthFailWhileAuthenticating,
+ prefix, sm->authAuthEapStartsWhileAuthenticating,
+ prefix, sm->authAuthEapLogoffWhileAuthenticating,
+ prefix, sm->authAuthReauthsWhileAuthenticated,
+ prefix, sm->authAuthEapStartsWhileAuthenticated,
+ prefix, sm->authAuthEapLogoffWhileAuthenticated);
+
+ fprintf(f, "%s Backend Authentication:\n"
+ "%s state=%s\n"
+ "%s eapNoReq=%s eapReq=%s eapResp=%s\n"
+ "%s serverTimeout=%d\n"
+ "%s backendResponses=%d\n"
+ "%s backendAccessChallenges=%d\n"
+ "%s backendOtherRequestsToSupplicant=%d\n"
+ "%s backendAuthSuccesses=%d\n"
+ "%s backendAuthFails=%d\n",
+ prefix, prefix,
+ be_auth_state_txt(sm->be_auth_state),
+ prefix, _SB(sm->eap_if->eapNoReq), _SB(sm->eap_if->eapReq),
+ _SB(sm->eap_if->eapResp),
+ prefix, sm->serverTimeout,
+ prefix, sm->backendResponses,
+ prefix, sm->backendAccessChallenges,
+ prefix, sm->backendOtherRequestsToSupplicant,
+ prefix, sm->backendAuthSuccesses,
+ prefix, sm->backendAuthFails);
+
+ fprintf(f, "%s Reauthentication Timer:\n"
+ "%s state=%s\n"
+ "%s reAuthPeriod=%d reAuthEnabled=%s\n", prefix, prefix,
+ reauth_timer_state_txt(sm->reauth_timer_state), prefix,
+ sm->reAuthPeriod, _SB(sm->reAuthEnabled));
+
+ fprintf(f, "%s Authenticator Key Transmit:\n"
+ "%s state=%s\n", prefix, prefix,
+ auth_key_tx_state_txt(sm->auth_key_tx_state));
+
+ fprintf(f, "%s Key Receive:\n"
+ "%s state=%s\n"
+ "%s rxKey=%s\n", prefix, prefix,
+ key_rx_state_txt(sm->key_rx_state), prefix, _SB(sm->rxKey));
+
+ fprintf(f, "%s Controlled Directions:\n"
+ "%s state=%s\n"
+ "%s adminControlledDirections=%s "
+ "operControlledDirections=%s\n"
+ "%s operEdge=%s\n", prefix, prefix,
+ ctrl_dir_state_txt(sm->ctrl_dir_state),
+ prefix, ctrl_dir_txt(sm->adminControlledDirections),
+ ctrl_dir_txt(sm->operControlledDirections),
+ prefix, _SB(sm->operEdge));
+#undef _SB
+}
+#endif /* HOSTAPD_DUMP_STATE */
+
+
+static int eapol_sm_get_eap_user(void *ctx, const u8 *identity,
+ size_t identity_len, int phase2,
+ struct eap_user *user)
+{
+ struct eapol_state_machine *sm = ctx;
+ return sm->eapol->cb.get_eap_user(sm->eapol->conf.ctx, identity,
+ identity_len, phase2, user);
+}
+
+
+static const char * eapol_sm_get_eap_req_id_text(void *ctx, size_t *len)
+{
+ struct eapol_state_machine *sm = ctx;
+ *len = sm->eapol->conf.eap_req_id_text_len;
+ return sm->eapol->conf.eap_req_id_text;
+}
+
+
+static struct eapol_callbacks eapol_cb =
+{
+ .get_eap_user = eapol_sm_get_eap_user,
+ .get_eap_req_id_text = eapol_sm_get_eap_req_id_text,
+};
+
+
+int eapol_auth_eap_pending_cb(struct eapol_state_machine *sm, void *ctx)
+{
+ if (sm == NULL || ctx != sm->eap)
+ return -1;
+
+ eap_sm_pending_cb(sm->eap);
+ eapol_auth_step(sm);
+
+ return 0;
+}
+
+
+static int eapol_auth_conf_clone(struct eapol_auth_config *dst,
+ struct eapol_auth_config *src)
+{
+ dst->ctx = src->ctx;
+ dst->eap_reauth_period = src->eap_reauth_period;
+ dst->wpa = src->wpa;
+ dst->individual_wep_key_len = src->individual_wep_key_len;
+ dst->eap_server = src->eap_server;
+ dst->ssl_ctx = src->ssl_ctx;
+ dst->eap_sim_db_priv = src->eap_sim_db_priv;
+ os_free(dst->eap_req_id_text);
+ if (src->eap_req_id_text) {
+ dst->eap_req_id_text = os_malloc(src->eap_req_id_text_len);
+ if (dst->eap_req_id_text == NULL)
+ return -1;
+ os_memcpy(dst->eap_req_id_text, src->eap_req_id_text,
+ src->eap_req_id_text_len);
+ dst->eap_req_id_text_len = src->eap_req_id_text_len;
+ } else {
+ dst->eap_req_id_text = NULL;
+ dst->eap_req_id_text_len = 0;
+ }
+ if (src->pac_opaque_encr_key) {
+ dst->pac_opaque_encr_key = os_malloc(16);
+ os_memcpy(dst->pac_opaque_encr_key, src->pac_opaque_encr_key,
+ 16);
+ } else
+ dst->pac_opaque_encr_key = NULL;
+ if (src->eap_fast_a_id) {
+ dst->eap_fast_a_id = os_malloc(src->eap_fast_a_id_len);
+ if (dst->eap_fast_a_id == NULL) {
+ os_free(dst->eap_req_id_text);
+ return -1;
+ }
+ os_memcpy(dst->eap_fast_a_id, src->eap_fast_a_id,
+ src->eap_fast_a_id_len);
+ dst->eap_fast_a_id_len = src->eap_fast_a_id_len;
+ } else
+ dst->eap_fast_a_id = NULL;
+ if (src->eap_fast_a_id_info) {
+ dst->eap_fast_a_id_info = os_strdup(src->eap_fast_a_id_info);
+ if (dst->eap_fast_a_id_info == NULL) {
+ os_free(dst->eap_req_id_text);
+ os_free(dst->eap_fast_a_id);
+ return -1;
+ }
+ } else
+ dst->eap_fast_a_id_info = NULL;
+ dst->eap_fast_prov = src->eap_fast_prov;
+ dst->pac_key_lifetime = src->pac_key_lifetime;
+ dst->pac_key_refresh_time = src->pac_key_refresh_time;
+ dst->eap_sim_aka_result_ind = src->eap_sim_aka_result_ind;
+ dst->tnc = src->tnc;
+ dst->wps = src->wps;
+ return 0;
+}
+
+
+static void eapol_auth_conf_free(struct eapol_auth_config *conf)
+{
+ os_free(conf->eap_req_id_text);
+ conf->eap_req_id_text = NULL;
+ os_free(conf->pac_opaque_encr_key);
+ conf->pac_opaque_encr_key = NULL;
+ os_free(conf->eap_fast_a_id);
+ conf->eap_fast_a_id = NULL;
+ os_free(conf->eap_fast_a_id_info);
+ conf->eap_fast_a_id_info = NULL;
+}
+
+
+struct eapol_authenticator * eapol_auth_init(struct eapol_auth_config *conf,
+ struct eapol_auth_cb *cb)
+{
+ struct eapol_authenticator *eapol;
+
+ eapol = os_zalloc(sizeof(*eapol));
+ if (eapol == NULL)
+ return NULL;
+
+ if (eapol_auth_conf_clone(&eapol->conf, conf) < 0) {
+ os_free(eapol);
+ return NULL;
+ }
+
+ if (conf->individual_wep_key_len > 0) {
+ /* use key0 in individual key and key1 in broadcast key */
+ eapol->default_wep_key_idx = 1;
+ }
+
+ eapol->cb.eapol_send = cb->eapol_send;
+ eapol->cb.aaa_send = cb->aaa_send;
+ eapol->cb.finished = cb->finished;
+ eapol->cb.get_eap_user = cb->get_eap_user;
+ eapol->cb.sta_entry_alive = cb->sta_entry_alive;
+ eapol->cb.logger = cb->logger;
+ eapol->cb.set_port_authorized = cb->set_port_authorized;
+ eapol->cb.abort_auth = cb->abort_auth;
+ eapol->cb.tx_key = cb->tx_key;
+ eapol->cb.eapol_event = cb->eapol_event;
+
+ return eapol;
+}
+
+
+void eapol_auth_deinit(struct eapol_authenticator *eapol)
+{
+ if (eapol == NULL)
+ return;
+
+ eapol_auth_conf_free(&eapol->conf);
+ os_free(eapol->default_wep_key);
+ os_free(eapol);
+}