diff options
author | sam <sam@FreeBSD.org> | 2009-03-02 02:29:17 +0000 |
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committer | sam <sam@FreeBSD.org> | 2009-03-02 02:29:17 +0000 |
commit | ddc28333969dfde04f6c179cab0e3cd36971ddde (patch) | |
tree | fdef898b1a2d04c7e3c2b8c50dd9d9d200b6a9e1 /contrib/hostapd/eapol_sm.c | |
parent | cba727f413d0099236e6f2a8dd2d3fc5ba76b6a7 (diff) | |
download | FreeBSD-src-ddc28333969dfde04f6c179cab0e3cd36971ddde.zip FreeBSD-src-ddc28333969dfde04f6c179cab0e3cd36971ddde.tar.gz |
don't need these any more; we are now using a combined tree
Diffstat (limited to 'contrib/hostapd/eapol_sm.c')
-rw-r--r-- | contrib/hostapd/eapol_sm.c | 1266 |
1 files changed, 0 insertions, 1266 deletions
diff --git a/contrib/hostapd/eapol_sm.c b/contrib/hostapd/eapol_sm.c deleted file mode 100644 index 18f2576..0000000 --- a/contrib/hostapd/eapol_sm.c +++ /dev/null @@ -1,1266 +0,0 @@ -/* - * hostapd / IEEE 802.1X Authenticator - EAPOL state machine - * Copyright (c) 2002-2005, 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. - * - * $FreeBSD$ - */ - -#include "includes.h" - -#include "hostapd.h" -#include "ieee802_1x.h" -#include "eapol_sm.h" -#include "eloop.h" -#include "wpa.h" -#include "preauth.h" -#include "sta_info.h" -#include "eap.h" -#include "state_machine.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-REV-d11, Chap. 8.2 */ - -#define setPortAuthorized() \ -ieee802_1x_set_sta_authorized(sm->hapd, sm->sta, 1) -#define setPortUnauthorized() \ -ieee802_1x_set_sta_authorized(sm->hapd, sm->sta, 0) - -/* procedures */ -#define txCannedFail() ieee802_1x_tx_canned_eap(sm->hapd, sm->sta, 0) -#define txCannedSuccess() ieee802_1x_tx_canned_eap(sm->hapd, sm->sta, 1) -#define txReq() ieee802_1x_tx_req(sm->hapd, sm->sta) -#define sendRespToServer() ieee802_1x_send_resp_to_server(sm->hapd, sm->sta) -#define abortAuth() ieee802_1x_abort_auth(sm->hapd, sm->sta) -#define txKey() ieee802_1x_tx_key(sm->hapd, 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); - - -/* 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_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)); - } - } - - 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->currentId = 255; -} - - -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) { - if (sm->flags & EAPOL_SM_PREAUTH) - rsn_preauth_finished(sm->hapd, sm->sta, 0); - else - ieee802_1x_finished(sm->hapd, sm->sta, 0); - } -} - - -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->eapRestart = TRUE; - ieee802_1x_request_identity(sm->hapd, sm->sta); -} - - -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; - - hostapd_logger(sm->hapd, sm->addr, HOSTAPD_MODULE_IEEE8021X, - HOSTAPD_LEVEL_WARNING, "authentication failed - " - "EAP type: %d (%s)", - sm->eap_type_authsrv, - eap_type_text(sm->eap_type_authsrv)); - if (sm->eap_type_authsrv != sm->eap_type_supp) { - hostapd_logger(sm->hapd, sm->addr, - HOSTAPD_MODULE_IEEE8021X, HOSTAPD_LEVEL_INFO, - "Supplicant used different EAP type: %d (%s)", - sm->eap_type_supp, - eap_type_text(sm->eap_type_supp)); - } - if (sm->flags & EAPOL_SM_PREAUTH) - rsn_preauth_finished(sm->hapd, sm->sta, 0); - else - ieee802_1x_finished(sm->hapd, sm->sta, 0); -} - - -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 (wpa_auth_sta_get_pmksa(sm->sta->wpa_sm)) - extra = " (PMKSA cache)"; - hostapd_logger(sm->hapd, sm->addr, HOSTAPD_MODULE_IEEE8021X, - HOSTAPD_LEVEL_INFO, "authenticated - EAP type: %d (%s)" - "%s", sm->eap_type_authsrv, - eap_type_text(sm->eap_type_authsrv), extra); - if (sm->flags & EAPOL_SM_PREAUTH) - rsn_preauth_finished(sm->hapd, sm->sta, 1); - else - ieee802_1x_finished(sm->hapd, sm->sta, 1); -} - - -SM_STATE(AUTH_PAE, AUTHENTICATING) -{ - if (sm->auth_pae_state == AUTH_PAE_CONNECTING && sm->rx_identity) { - sm->authEntersAuthenticating++; - sm->rx_identity = FALSE; - } - - 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->portEnabled) - SM_ENTER(AUTH_PAE, INITIALIZE); - else if (sm->portControl == ForceAuthorized && - sm->portMode != sm->portControl && - !(sm->initialize || !sm->portEnabled)) - SM_ENTER(AUTH_PAE, FORCE_AUTH); - else if (sm->portControl == ForceUnauthorized && - sm->portMode != sm->portControl && - !(sm->initialize || !sm->portEnabled)) - SM_ENTER(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->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->eapReq && - sm->reAuthCount <= sm->reAuthMax) || - sm->eapSuccess || sm->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->eapNoReq = FALSE; - sm->authAbort = FALSE; -} - - -SM_STATE(BE_AUTH, REQUEST) -{ - SM_ENTRY_MA(BE_AUTH, REQUEST, be_auth); - - txReq(); - sm->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->eapNoReq = FALSE; - sm->aWhile = sm->serverTimeout; - sm->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); - - /* Note: IEEE 802.1X-REV-d11 has unconditional txReq() here. - * txCannelFail() is used as a workaround for the case where - * authentication server does not include EAP-Message with - * Access-Reject. */ - if (sm->last_eap_radius == NULL) - txCannedFail(); - else - 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->eapNoReq = FALSE; -} - - -SM_STEP(BE_AUTH) -{ - if (sm->portControl != Auto || sm->initialize || sm->authAbort) { - SM_ENTER(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->eapReq) - SM_ENTER(BE_AUTH, REQUEST); - else if (sm->eapTimeout) - SM_ENTER(BE_AUTH, TIMEOUT); - break; - case BE_AUTH_RESPONSE: - if (sm->eapNoReq) - SM_ENTER(BE_AUTH, IGNORE); - if (sm->eapReq) { - sm->backendAccessChallenges++; - SM_ENTER(BE_AUTH, REQUEST); - } else if (sm->aWhile == 0) - SM_ENTER(BE_AUTH, TIMEOUT); - else if (sm->eapFail) { - sm->backendAuthFails++; - SM_ENTER(BE_AUTH, FAIL); - } else if (sm->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->eapFail && sm->authStart) - SM_ENTER(BE_AUTH, FAIL); - else if (sm->eapReq && sm->authStart) - SM_ENTER(BE_AUTH, REQUEST); - else if (sm->eapSuccess && sm->authStart) - SM_ENTER(BE_AUTH, SUCCESS); - break; - case BE_AUTH_IGNORE: - if (sm->eapolEap) - SM_ENTER(BE_AUTH, RESPONSE); - else if (sm->eapReq) - SM_ENTER(BE_AUTH, REQUEST); - else if (sm->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; - wpa_auth_sm_event(sm->sta->wpa_sm, WPA_REAUTH_EAPOL); -} - - -SM_STEP(REAUTH_TIMER) -{ - if (sm->portControl != Auto || sm->initialize || - sm->authPortStatus == Unauthorized || !sm->reAuthEnabled) { - SM_ENTER(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->keyAvailable = FALSE; - sm->keyDone = TRUE; -} - - -SM_STEP(AUTH_KEY_TX) -{ - if (sm->initialize || sm->portControl != Auto) { - SM_ENTER(AUTH_KEY_TX, NO_KEY_TRANSMIT); - return; - } - - switch (sm->auth_key_tx_state) { - case AUTH_KEY_TX_NO_KEY_TRANSMIT: - if (sm->keyTxEnabled && sm->keyAvailable && sm->keyRun && - !wpa_auth_sta_wpa_version(sm->sta->wpa_sm)) - 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->keyAvailable) - 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->portEnabled) { - SM_ENTER(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(CTRL_DIR, IN_OR_BOTH); - return; - } - - switch (sm->ctrl_dir_state) { - case CTRL_DIR_FORCE_BOTH: - if (sm->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->portEnabled || !sm->operEdge) - SM_ENTER(CTRL_DIR, FORCE_BOTH); - break; - } -} - - - -struct eapol_state_machine * -eapol_sm_alloc(struct hostapd_data *hapd, struct sta_info *sta) -{ - struct eapol_state_machine *sm; - - sm = wpa_zalloc(sizeof(*sm)); - if (sm == NULL) { - printf("IEEE 802.1X port state allocation failed\n"); - return NULL; - } - sm->radius_identifier = -1; - memcpy(sm->addr, sta->addr, ETH_ALEN); - if (sta->flags & WLAN_STA_PREAUTH) - sm->flags |= EAPOL_SM_PREAUTH; - - sm->hapd = hapd; - sm->sta = sta; - - /* 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 = hapd->conf->eap_reauth_period; - sm->reAuthEnabled = hapd->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->portEnabled = FALSE; - sm->portControl = Auto; - - sm->keyAvailable = FALSE; - if (!hapd->conf->wpa && - (hapd->default_wep_key || hapd->conf->individual_wep_key_len > 0)) - sm->keyTxEnabled = TRUE; - else - sm->keyTxEnabled = FALSE; - if (hapd->conf->wpa) - sm->portValid = FALSE; - else - sm->portValid = TRUE; - - if (hapd->conf->eap_server) { - struct eap_config eap_conf; - memset(&eap_conf, 0, sizeof(eap_conf)); - eap_conf.ssl_ctx = hapd->ssl_ctx; - eap_conf.eap_sim_db_priv = hapd->eap_sim_db_priv; - sm->eap = eap_sm_init(sm, &eapol_cb, &eap_conf); - if (sm->eap == NULL) { - eapol_sm_free(sm); - return NULL; - } - } - - eapol_sm_initialize(sm); - - return sm; -} - - -void eapol_sm_free(struct eapol_state_machine *sm) -{ - if (sm == NULL) - return; - - eloop_cancel_timeout(eapol_port_timers_tick, sm->hapd, sm); - eloop_cancel_timeout(eapol_sm_step_cb, sm, NULL); - if (sm->eap) - eap_sm_deinit(sm->eap); - free(sm); -} - - -static int eapol_sm_sta_entry_alive(struct hostapd_data *hapd, u8 *addr) -{ - struct sta_info *sta; - sta = ap_get_sta(hapd, addr); - if (sta == NULL || sta->eapol_sm == NULL) - return 0; - return 1; -} - - -static void eapol_sm_step_run(struct eapol_state_machine *sm) -{ - struct hostapd_data *hapd = sm->hapd; - 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; - - memcpy(addr, sm->sta->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(hapd, addr)) - SM_STEP_RUN(BE_AUTH); - if (sm->initializing || eapol_sm_sta_entry_alive(hapd, addr)) - SM_STEP_RUN(REAUTH_TIMER); - if (sm->initializing || eapol_sm_sta_entry_alive(hapd, addr)) - SM_STEP_RUN(AUTH_KEY_TX); - if (sm->initializing || eapol_sm_sta_entry_alive(hapd, addr)) - SM_STEP_RUN(KEY_RX); - if (sm->initializing || eapol_sm_sta_entry_alive(hapd, 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_sm_step(sm); - return; - } - - if (eapol_sm_sta_entry_alive(hapd, addr) && sm->eap) { - if (eap_sm_step(sm->eap)) { - if (--max_steps > 0) - goto restart; - /* Re-run from eloop timeout */ - eapol_sm_step(sm); - return; - } - } - - if (eapol_sm_sta_entry_alive(hapd, addr)) - wpa_auth_sm_notify(sm->sta->wpa_sm); -} - - -static void eapol_sm_step_cb(void *eloop_ctx, void *timeout_ctx) -{ - struct eapol_state_machine *sm = eloop_ctx; - eapol_sm_step_run(sm); -} - - -void eapol_sm_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); -} - - -void eapol_sm_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, sm->hapd, sm); - eloop_register_timeout(1, 0, eapol_port_timers_tick, sm->hapd, 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_sm_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->eapFail), _SB(sm->eapolEap), - prefix, _SB(sm->eapSuccess), _SB(sm->eapTimeout), - _SB(sm->initialize), _SB(sm->keyAvailable), - prefix, _SB(sm->keyDone), _SB(sm->keyRun), - _SB(sm->keyTxEnabled), port_type_txt(sm->portControl), - prefix, _SB(sm->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->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->eapNoReq), _SB(sm->eapReq), _SB(sm->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 Boolean eapol_sm_get_bool(void *ctx, enum eapol_bool_var variable) -{ - struct eapol_state_machine *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_eapReq: - return sm->eapReq; - case EAPOL_eapNoReq: - return sm->eapNoReq; - case EAPOL_portEnabled: - return sm->portEnabled; - case EAPOL_eapTimeout: - return sm->eapTimeout; - } - return FALSE; -} - - -static void eapol_sm_set_bool(void *ctx, enum eapol_bool_var variable, - Boolean value) -{ - struct eapol_state_machine *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_eapReq: - sm->eapReq = value; - break; - case EAPOL_eapNoReq: - sm->eapNoReq = value; - break; - case EAPOL_portEnabled: - sm->portEnabled = value; - break; - case EAPOL_eapTimeout: - sm->eapTimeout = value; - break; - } -} - - -static void eapol_sm_set_eapReqData(void *ctx, const u8 *eapReqData, - size_t eapReqDataLen) -{ - struct eapol_state_machine *sm = ctx; - if (sm == NULL) - return; - - free(sm->last_eap_radius); - sm->last_eap_radius = malloc(eapReqDataLen); - if (sm->last_eap_radius == NULL) - return; - memcpy(sm->last_eap_radius, eapReqData, eapReqDataLen); - sm->last_eap_radius_len = eapReqDataLen; -} - - -static void eapol_sm_set_eapKeyData(void *ctx, const u8 *eapKeyData, - size_t eapKeyDataLen) -{ - struct eapol_state_machine *sm = ctx; - struct hostapd_data *hapd; - - if (sm == NULL) - return; - - hapd = sm->hapd; - - if (eapKeyData && eapKeyDataLen >= 64) { - free(sm->eapol_key_sign); - free(sm->eapol_key_crypt); - sm->eapol_key_crypt = malloc(32); - if (sm->eapol_key_crypt) { - memcpy(sm->eapol_key_crypt, eapKeyData, 32); - sm->eapol_key_crypt_len = 32; - } - sm->eapol_key_sign = malloc(32); - if (sm->eapol_key_sign) { - memcpy(sm->eapol_key_sign, eapKeyData + 32, 32); - sm->eapol_key_sign_len = 32; - } - if (hapd->default_wep_key || - hapd->conf->individual_wep_key_len > 0 || - hapd->conf->wpa) - sm->keyAvailable = TRUE; - } else { - free(sm->eapol_key_sign); - free(sm->eapol_key_crypt); - sm->eapol_key_sign = NULL; - sm->eapol_key_crypt = NULL; - sm->eapol_key_sign_len = 0; - sm->eapol_key_crypt_len = 0; - sm->keyAvailable = FALSE; - } -} - - -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; - const struct hostapd_eap_user *eap_user; - int i, count; - - eap_user = hostapd_get_eap_user(sm->hapd->conf, identity, - identity_len, phase2); - if (eap_user == NULL) - return -1; - - memset(user, 0, sizeof(*user)); - user->phase2 = phase2; - count = EAP_USER_MAX_METHODS; - if (count > EAP_MAX_METHODS) - count = EAP_MAX_METHODS; - for (i = 0; i < count; i++) { - user->methods[i].vendor = eap_user->methods[i].vendor; - user->methods[i].method = eap_user->methods[i].method; - } - - if (eap_user->password) { - user->password = malloc(eap_user->password_len); - if (user->password == NULL) - return -1; - memcpy(user->password, eap_user->password, - eap_user->password_len); - user->password_len = eap_user->password_len; - } - user->force_version = eap_user->force_version; - - return 0; -} - - -static const char * eapol_sm_get_eap_req_id_text(void *ctx, size_t *len) -{ - struct eapol_state_machine *sm = ctx; - *len = sm->hapd->conf->eap_req_id_text_len; - return sm->hapd->conf->eap_req_id_text; -} - - -static struct eapol_callbacks eapol_cb = -{ - .get_bool = eapol_sm_get_bool, - .set_bool = eapol_sm_set_bool, - .set_eapReqData = eapol_sm_set_eapReqData, - .set_eapKeyData = eapol_sm_set_eapKeyData, - .get_eap_user = eapol_sm_get_eap_user, - .get_eap_req_id_text = eapol_sm_get_eap_req_id_text, -}; - - -int eapol_sm_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_sm_step(sm); - - return 0; -} |