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components/wpa_supplicant/esp_supplicant/src/esp_eap_client.c
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/*
* SPDX-FileCopyrightText: 2019-2024 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <string.h>
#include <inttypes.h>
#include "esp_err.h"
#include "utils/includes.h"
#include "utils/common.h"
#include "utils/wpa_debug.h"
#include "common/wpa_ctrl.h"
#include "common/eapol_common.h"
#include "common/ieee802_11_defs.h"
#include "utils/state_machine.h"
#include "rsn_supp/wpa.h"
#include "crypto/crypto.h"
#include "utils/ext_password.h"
#include "crypto/tls.h"
#include "eap_peer/eap_i.h"
#include "eap_peer/eap_config.h"
#include "eap_peer/eap.h"
#include "eap_peer/eap_tls.h"
#ifdef EAP_PEER_METHOD
#include "eap_peer/eap_methods.h"
#endif
#include "esp_wifi_driver.h"
#include "esp_private/wifi.h"
#include "esp_wpa_err.h"
#ifdef CONFIG_MBEDTLS_CERTIFICATE_BUNDLE
#include "esp_crt_bundle.h"
#endif
#include "esp_wpas_glue.h"
#include "esp_eap_client_i.h"
#include "esp_eap_client.h"
#define WPA2_VERSION "v2.0"
#define DATA_MUTEX_TAKE() os_mutex_lock(s_wpa2_data_lock)
#define DATA_MUTEX_GIVE() os_mutex_unlock(s_wpa2_data_lock)
//length of the string "fast_provisioning={0/1/2} "
#define FAST_PROVISIONING_CONFIG_STR_LEN 20
//length of the string "fast_max_pac_list_len=(int < 100) "
#define FAST_MAX_PAC_LIST_CONFIG_STR_LEN 25
//length of the string "fast_pac_format=binary"
#define FAST_PAC_FORMAT_STR_LEN 22
//Total
#define PHASE1_PARAM_STRING_LEN FAST_PROVISIONING_CONFIG_STR_LEN + FAST_MAX_PAC_LIST_CONFIG_STR_LEN + FAST_PAC_FORMAT_STR_LEN
static void *s_wpa2_data_lock = NULL;
static struct eap_sm *gEapSm = NULL;
static int eap_peer_sm_init(void);
static void eap_peer_sm_deinit(void);
static int eap_sm_rx_eapol_internal(u8 *src_addr, u8 *buf, u32 len, uint8_t *bssid);
static int wpa2_start_eapol_internal(void);
int wpa2_post(uint32_t sig, uint32_t par);
#ifdef USE_WPA2_TASK
#define WPA2_TASK_PRIORITY 7
static void *s_wpa2_task_hdl = NULL;
static void *s_wpa2_queue = NULL;
static wpa2_state_t s_wpa2_state = WPA2_STATE_DISABLED;
static void *s_wpa2_api_lock = NULL;
static void *s_wifi_wpa2_sync_sem = NULL;
static bool s_disable_time_check = true;
static void wpa2_api_lock(void)
{
if (s_wpa2_api_lock == NULL) {
s_wpa2_api_lock = os_recursive_mutex_create();
if (!s_wpa2_api_lock) {
wpa_printf(MSG_ERROR, "EAP: failed to create EAP api lock");
return;
}
}
os_mutex_lock(s_wpa2_api_lock);
}
static void wpa2_api_unlock(void)
{
if (s_wpa2_api_lock) {
os_mutex_unlock(s_wpa2_api_lock);
}
}
static bool inline wpa2_is_enabled(void)
{
return (s_wpa2_state == WPA2_STATE_ENABLED);
}
static bool inline wpa2_is_disabled(void)
{
return (s_wpa2_state == WPA2_STATE_DISABLED);
}
static void inline wpa2_set_state(wpa2_state_t state)
{
s_wpa2_state = state;
}
static void wpa2_set_eap_state(wpa2_ent_eap_state_t state)
{
if (!gEapSm) {
return;
}
gEapSm->finish_state = state;
esp_wifi_set_wpa2_ent_state_internal(state);
}
wpa2_ent_eap_state_t eap_client_get_eap_state(void)
{
if (!gEapSm) {
return WPA2_ENT_EAP_STATE_NOT_START;
}
return gEapSm->finish_state;
}
static inline void wpa2_task_delete(void *arg)
{
void *my_task_hdl = os_task_get_current_task();
int ret = ESP_OK;
if (my_task_hdl == s_wpa2_task_hdl) {
wpa_printf(MSG_ERROR, "EAP: should never call task delete api in eap task context");
return;
}
ret = wpa2_post(SIG_WPA2_TASK_DEL, 0);
if (ESP_OK != ret) {
wpa_printf(MSG_ERROR, "EAP: failed to post task delete event, ret=%d", ret);
return;
}
}
#define WPA_ADDR_LEN 6
struct wpa2_rx_param {
uint8_t *bssid;
u8 sa[WPA_ADDR_LEN];
u8 *buf;
int len;
STAILQ_ENTRY(wpa2_rx_param) bqentry;
};
static STAILQ_HEAD(, wpa2_rx_param) s_wpa2_rxq;
static void wpa2_rxq_init(void)
{
DATA_MUTEX_TAKE();
STAILQ_INIT(&s_wpa2_rxq);
DATA_MUTEX_GIVE();
}
static void wpa2_rxq_enqueue(struct wpa2_rx_param *param)
{
DATA_MUTEX_TAKE();
STAILQ_INSERT_TAIL(&s_wpa2_rxq, param, bqentry);
DATA_MUTEX_GIVE();
}
static struct wpa2_rx_param * wpa2_rxq_dequeue(void)
{
struct wpa2_rx_param *param = NULL;
DATA_MUTEX_TAKE();
if ((param = STAILQ_FIRST(&s_wpa2_rxq)) != NULL) {
STAILQ_REMOVE_HEAD(&s_wpa2_rxq, bqentry);
STAILQ_NEXT(param, bqentry) = NULL;
}
DATA_MUTEX_GIVE();
return param;
}
static void wpa2_rxq_deinit(void)
{
struct wpa2_rx_param *param = NULL;
DATA_MUTEX_TAKE();
while ((param = STAILQ_FIRST(&s_wpa2_rxq)) != NULL) {
STAILQ_REMOVE_HEAD(&s_wpa2_rxq, bqentry);
STAILQ_NEXT(param, bqentry) = NULL;
os_free(param->buf);
os_free(param);
}
DATA_MUTEX_GIVE();
}
void wpa2_task(void *pvParameters)
{
ETSEvent e;
struct eap_sm *sm = gEapSm;
bool task_del = false;
if (!sm) {
return;
}
for (;;) {
if (TRUE == os_queue_recv(s_wpa2_queue, &e, OS_BLOCK)) {
if (e.sig < SIG_WPA2_MAX) {
DATA_MUTEX_TAKE();
if (sm->wpa2_sig_cnt[e.sig]) {
sm->wpa2_sig_cnt[e.sig]--;
} else {
wpa_printf(MSG_ERROR, "wpa2_task: invalid sig cnt, sig=%" PRId32 " cnt=%d", e.sig, sm->wpa2_sig_cnt[e.sig]);
}
DATA_MUTEX_GIVE();
}
switch (e.sig) {
case SIG_WPA2_TASK_DEL:
task_del = true;
break;
case SIG_WPA2_START:
wpa2_start_eapol_internal();
break;
case SIG_WPA2_RX: {
struct wpa2_rx_param *param = NULL;
while ((param = wpa2_rxq_dequeue()) != NULL) {
eap_sm_rx_eapol_internal(param->sa, param->buf, param->len, param->bssid);
os_free(param->buf);
os_free(param);
}
break;
}
default:
break;
}
if (task_del) {
break;
}
if (s_wifi_wpa2_sync_sem) {
wpa_printf(MSG_DEBUG, "EAP: wifi->EAP api completed");
os_semphr_give(s_wifi_wpa2_sync_sem);
} else {
wpa_printf(MSG_ERROR, "EAP: null wifi->EAP sync sem");
}
}
}
wpa_printf(MSG_DEBUG, "EAP: queue deleted");
os_queue_delete(s_wpa2_queue);
wpa_printf(MSG_DEBUG, "EAP: task deleted");
s_wpa2_queue = NULL;
if (s_wifi_wpa2_sync_sem) {
wpa_printf(MSG_DEBUG, "EAP: wifi->EAP api completed");
os_semphr_give(s_wifi_wpa2_sync_sem);
} else {
wpa_printf(MSG_ERROR, "EAP: null wifi->EAP sync sem");
}
/* At this point, we completed */
os_task_delete(NULL);
}
int wpa2_post(uint32_t sig, uint32_t par)
{
struct eap_sm *sm = gEapSm;
ETSEvent evt;
if (!sm) {
return ESP_FAIL;
}
DATA_MUTEX_TAKE();
if (sm->wpa2_sig_cnt[sig]) {
DATA_MUTEX_GIVE();
return ESP_OK;
}
sm->wpa2_sig_cnt[sig]++;
DATA_MUTEX_GIVE();
evt.sig = sig;
evt.par = par;
if (os_queue_send(s_wpa2_queue, &evt, os_task_ms_to_tick(10)) != TRUE) {
wpa_printf(MSG_ERROR, "EAP: Q S E");
return ESP_FAIL;
}
if (s_wifi_wpa2_sync_sem) {
os_semphr_take(s_wifi_wpa2_sync_sem, OS_BLOCK);
wpa_printf(MSG_DEBUG, "EAP: EAP api return, sm->state(%d)", sm->finish_state);
} else {
wpa_printf(MSG_ERROR, "EAP: null wifi->EAP sync sem");
}
return ESP_OK;
}
#endif /* USE_WPA2_TASK */
int eap_sm_send_eapol(struct eap_sm *sm, struct wpabuf *resp)
{
size_t outlen;
int ret;
u8 *outbuf = NULL;
u8 bssid[6];
ret = esp_wifi_get_assoc_bssid_internal(bssid);
if (ret != 0) {
wpa_printf(MSG_DEBUG, "bssid is empty");
return WPA_ERR_INVALID_BSSID;
}
outbuf = wpa_alloc_eapol(sm, IEEE802_1X_TYPE_EAP_PACKET,
wpabuf_head_u8(resp), wpabuf_len(resp),
&outlen, NULL);
if (!outbuf) {
return ESP_ERR_NO_MEM;
}
ret = wpa_ether_send(sm, bssid, ETH_P_EAPOL, outbuf, outlen);
wpa_free_eapol(outbuf);
if (ret) {
return ESP_FAIL;
}
return ESP_OK;
}
int eap_sm_process_request(struct eap_sm *sm, struct wpabuf *reqData)
{
size_t plen;
u32 reqVendor, reqVendorMethod;
u8 type, *pos;
struct eap_hdr *ehdr;
const struct eap_method *m = NULL;
struct wpabuf *resp = NULL;
struct eap_method_ret m_res;
int ret = 0;
if (reqData == NULL || wpabuf_len(reqData) < sizeof(*ehdr)) {
return ESP_ERR_INVALID_ARG;
}
ehdr = (struct eap_hdr *)wpabuf_head(reqData);
plen = be_to_host16(ehdr->length);
if (plen > wpabuf_len(reqData)) {
return ESP_FAIL;
}
if (ehdr->identifier == sm->current_identifier &&
sm->lastRespData != NULL) {
/*Retransmit*/
resp = sm->lastRespData;
goto send_resp;
}
sm->current_identifier = ehdr->identifier;
pos = (u8 *)(ehdr + 1);
type = *pos++;
if (type == EAP_TYPE_IDENTITY) {
resp = (struct wpabuf *)eap_sm_build_identity_resp(sm, ehdr->identifier, 0);
goto send_resp;
} else if (type == EAP_TYPE_NOTIFICATION) {
/*Ignore*/
goto out;
} else if (type == EAP_TYPE_EXPANDED) {
if (plen < sizeof(*ehdr) + 8) {
return ESP_FAIL;
}
reqVendor = WPA_GET_BE24(pos);
pos += 3;
reqVendorMethod = WPA_GET_BE32(pos);
} else {
reqVendor = EAP_VENDOR_IETF;
reqVendorMethod = type;
}
if (sm->m && sm->m->process && sm->eap_method_priv &&
reqVendor == sm->m->vendor &&
reqVendorMethod == sm->m->method) {
resp = sm->m->process(sm, sm->eap_method_priv,
&m_res, reqData);
} else {
m = eap_peer_get_eap_method(reqVendor, reqVendorMethod);
if (m == NULL) {
goto build_nak;
}
if (!eap_sm_allowMethod(sm, reqVendor, reqVendorMethod)) {
wpa_printf(MSG_DEBUG, "EAP: vendor %" PRIu32 " method %" PRIu32 " not allowed",
reqVendor, reqVendorMethod);
wpa_msg(sm->msg_ctx, MSG_INFO, WPA_EVENT_EAP_PROPOSED_METHOD
"vendor=%" PRIu32 " method=%" PRIu32 " -> NAK",
reqVendor, reqVendorMethod);
goto build_nak;
}
if (sm->m) {
eap_deinit_prev_method(sm, "GET_METHOD");
}
sm->m = m;
sm->eap_method_priv = sm->m->init(sm);
if (sm->eap_method_priv == NULL) {
wpa_printf(MSG_ERROR, "Method private structure allocated failure");
sm->m = NULL;
goto build_nak;
}
if (sm->m->process) {
resp = sm->m->process(sm, sm->eap_method_priv, &m_res, reqData);
}
}
if (sm->m->isKeyAvailable && sm->m->getKey &&
sm->m->isKeyAvailable(sm, sm->eap_method_priv)) {
if (sm->eapKeyData) {
os_free(sm->eapKeyData);
}
sm->eapKeyData = sm->m->getKey(sm, sm->eap_method_priv,
&sm->eapKeyDataLen);
}
goto send_resp;
build_nak:
resp = (struct wpabuf *)eap_sm_build_nak(sm, type, ehdr->identifier);
if (resp == NULL) {
return ESP_FAIL;
}
send_resp:
if (resp == NULL) {
wpa_printf(MSG_ERROR, "Response build fail, return.");
wpabuf_free(sm->lastRespData);
sm->lastRespData = resp;
wpa2_set_eap_state(WPA2_ENT_EAP_STATE_FAIL);
return WPA2_ENT_EAP_STATE_FAIL;
}
ret = eap_sm_send_eapol(sm, resp);
if (resp != sm->lastRespData) {
wpabuf_free(sm->lastRespData);
}
if (ret != ESP_OK) {
wpabuf_free(resp);
resp = NULL;
if (ret == WPA_ERR_INVALID_BSSID) {
ret = WPA2_ENT_EAP_STATE_FAIL;
wpa2_set_eap_state(WPA2_ENT_EAP_STATE_FAIL);
}
}
sm->lastRespData = resp;
out:
return ret;
}
static int eap_sm_rx_eapol(u8 *src_addr, u8 *buf, u32 len, uint8_t *bssid)
{
struct eap_sm *sm = gEapSm;
if (!sm) {
return ESP_FAIL;
}
#ifdef USE_WPA2_TASK
{
struct wpa2_rx_param *param = (struct wpa2_rx_param *)os_zalloc(sizeof(struct wpa2_rx_param)); /* free in task */
if (!param) {
return ESP_ERR_NO_MEM;
}
param->buf = (u8 *)os_zalloc(len); /* free in task */
if (!param->buf) {
os_free(param);
return ESP_ERR_NO_MEM;
}
param->bssid = bssid;
memcpy(param->buf, buf, len);
param->len = len;
memcpy(param->sa, src_addr, WPA_ADDR_LEN);
wpa2_rxq_enqueue(param);
return wpa2_post(SIG_WPA2_RX, 0);
}
#else
return eap_sm_rx_eapol_internal(src_addr, buf, len, bssid);
#endif
}
static int wpa2_ent_rx_eapol(u8 *src_addr, u8 *buf, u32 len, uint8_t *bssid)
{
struct ieee802_1x_hdr *hdr;
int ret = ESP_OK;
hdr = (struct ieee802_1x_hdr *) buf;
switch (hdr->type) {
case IEEE802_1X_TYPE_EAPOL_START:
case IEEE802_1X_TYPE_EAP_PACKET:
case IEEE802_1X_TYPE_EAPOL_LOGOFF:
ret = eap_sm_rx_eapol(src_addr, buf, len, bssid);
break;
case IEEE802_1X_TYPE_EAPOL_KEY:
ret = wpa_sm_rx_eapol(src_addr, buf, len);
break;
default:
wpa_printf(MSG_ERROR, "Unknown EAPOL packet type - %d", hdr->type);
break;
}
return ret;
}
static int eap_sm_rx_eapol_internal(u8 *src_addr, u8 *buf, u32 len, uint8_t *bssid)
{
struct eap_sm *sm = gEapSm;
u32 plen, data_len;
struct ieee802_1x_hdr *hdr;
struct eap_hdr *ehdr;
struct wpabuf *req = NULL;
u8 *tmp;
int ret = ESP_FAIL;
if (!sm) {
return ESP_FAIL;
}
if (len < sizeof(*hdr) + sizeof(*ehdr)) {
wpa_printf(MSG_DEBUG, "WPA: EAPOL frame too short to be a WPA "
"EAPOL-Key (len %lu, expecting at least %lu)",
(unsigned long) len,
(unsigned long) sizeof(*hdr) + sizeof(*ehdr));
return ESP_FAIL;
}
tmp = buf;
hdr = (struct ieee802_1x_hdr *) tmp;
ehdr = (struct eap_hdr *)(hdr + 1);
plen = be_to_host16(hdr->length);
data_len = plen + sizeof(*hdr);
wpa_printf(MSG_DEBUG, "IEEE 802.1X RX: version=%d type=%d length=%" PRId32 "",
hdr->version, hdr->type, plen);
if (hdr->version < EAPOL_VERSION) {
/* TODO: backwards compatibility */
}
if (hdr->type != IEEE802_1X_TYPE_EAP_PACKET) {
wpa_printf(MSG_DEBUG, "EAP: EAP frame (type %u) discarded, "
"not a EAP PACKET frame", hdr->type);
ret = -2;
goto _out;
}
if (plen > len - sizeof(*hdr) || plen < sizeof(*ehdr)) {
wpa_printf(MSG_DEBUG, "EAP: EAPOL frame payload size %lu "
"invalid (frame size %lu)",
(unsigned long) plen, (unsigned long) len);
ret = -2;
goto _out;
}
wpa_hexdump(MSG_MSGDUMP, "EAP: RX EAPOL-EAP PACKET", tmp, len);
if (data_len < len) {
wpa_printf(MSG_DEBUG, "WPA: ignoring %lu bytes after the IEEE "
"802.1X data\n", (unsigned long) len - data_len);
}
#ifdef EAP_PEER_METHOD
switch (ehdr->code) {
case EAP_CODE_REQUEST:
/* Handle EAP-reauthentication case */
if (sm->finish_state == WPA2_ENT_EAP_STATE_SUCCESS) {
wpa_printf(MSG_INFO, "EAP Re-authentication in progress");
wpa2_set_eap_state(WPA2_ENT_EAP_STATE_IN_PROGRESS);
}
req = wpabuf_alloc_copy((u8 *)ehdr, len - sizeof(*hdr));
ret = eap_sm_process_request(sm, req);
break;
case EAP_CODE_RESPONSE:
/*Ignore*/
break;
case EAP_CODE_SUCCESS:
if (sm->eapKeyData) {
wpa_set_pmk(sm->eapKeyData, 0, NULL, false);
os_free(sm->eapKeyData);
sm->eapKeyData = NULL;
wpa_printf(MSG_INFO, ">>>>>EAP FINISH");
ret = WPA2_ENT_EAP_STATE_SUCCESS;
wpa2_set_eap_state(WPA2_ENT_EAP_STATE_SUCCESS);
eap_deinit_prev_method(sm, "EAP Success");
} else {
wpa_printf(MSG_INFO, ">>>>>EAP FAILED, receive EAP_SUCCESS but pmk is empty, potential attack!");
ret = WPA2_ENT_EAP_STATE_FAIL;
wpa2_set_eap_state(WPA2_ENT_EAP_STATE_FAIL);
}
break;
case EAP_CODE_FAILURE:
wpa_printf(MSG_INFO, ">>>>>EAP FAILED");
ret = WPA2_ENT_EAP_STATE_FAIL;
wpa2_set_eap_state(WPA2_ENT_EAP_STATE_FAIL);
break;
}
_out:
wpabuf_free(req);
#endif
return ret;
}
static int wpa2_start_eapol(void)
{
#ifdef USE_WPA2_TASK
return wpa2_post(SIG_WPA2_START, 0);
#else
return wpa2_start_eapol_internal();
#endif
}
static int wpa2_start_eapol_internal(void)
{
struct eap_sm *sm = gEapSm;
int ret = 0;
u8 bssid[6];
u8 *buf;
size_t len;
if (!sm) {
return ESP_FAIL;
}
if (wpa_sta_cur_pmksa_matches_akm()) {
wpa_printf(MSG_DEBUG,
"RSN: PMKSA caching - do not send EAPOL-Start");
return ESP_FAIL;
}
ret = esp_wifi_get_assoc_bssid_internal(bssid);
if (ret != 0) {
wpa_printf(MSG_ERROR, "bssid is empty!");
return WPA_ERR_INVALID_BSSID;
}
buf = wpa_alloc_eapol(sm, IEEE802_1X_TYPE_EAPOL_START, (u8 *)"", 0, &len, NULL);
if (!buf) {
return ESP_FAIL;
}
wpa2_set_eap_state(WPA2_ENT_EAP_STATE_IN_PROGRESS);
wpa_ether_send(sm, bssid, ETH_P_EAPOL, buf, len);
wpa_free_eapol(buf);
return ESP_OK;
}
/**
* eap_peer_sm_init - Allocate and initialize EAP peer state machine
* @eapol_ctx: Context data to be used with eapol_cb calls
* @eapol_cb: Pointer to EAPOL callback functions
* @msg_ctx: Context data for wpa_msg() calls
* @conf: EAP configuration
* Returns: Pointer to the allocated EAP state machine or %NULL on failure
*
* This function allocates and initializes an EAP state machine. In addition,
* this initializes TLS library for the new EAP state machine. eapol_cb pointer
* will be in use until eap_peer_sm_deinit() is used to deinitialize this EAP
* state machine. Consequently, the caller must make sure that this data
* structure remains alive while the EAP state machine is active.
*/
static int eap_peer_sm_init(void)
{
int ret = 0;
struct eap_sm *sm;
if (gEapSm) {
wpa_printf(MSG_ERROR, "EAP: EAP sm not null, deinit it");
eap_peer_sm_deinit();
}
sm = (struct eap_sm *)os_zalloc(sizeof(*sm));
if (sm == NULL) {
ret = ESP_ERR_NO_MEM;
return ret;
}
gEapSm = sm;
s_wpa2_data_lock = os_recursive_mutex_create();
if (!s_wpa2_data_lock) {
wpa_printf(MSG_ERROR, "EAP eap_peer_sm_init: failed to alloc data lock");
ret = ESP_ERR_NO_MEM;
goto _err;
}
wpa2_set_eap_state(WPA2_ENT_EAP_STATE_NOT_START);
sm->current_identifier = 0xff;
esp_wifi_get_macaddr_internal(WIFI_IF_STA, sm->ownaddr);
ret = eap_peer_blob_init(sm);
if (ret) {
wpa_printf(MSG_ERROR, "eap_peer_blob_init failed");
ret = ESP_FAIL;
goto _err;
}
ret = eap_peer_config_init(sm, g_wpa_private_key_passwd, g_wpa_private_key_passwd_len);
if (ret) {
wpa_printf(MSG_ERROR, "eap_peer_config_init failed");
ret = ESP_FAIL;
goto _err;
}
sm->ssl_ctx = tls_init(NULL);
if (sm->ssl_ctx == NULL) {
wpa_printf(MSG_WARNING, "SSL: Failed to initialize TLS context.");
ret = ESP_FAIL;
goto _err;
}
wpa2_rxq_init();
gEapSm = sm;
#ifdef USE_WPA2_TASK
s_wpa2_queue = os_queue_create(SIG_WPA2_MAX, sizeof(ETSEvent));
ret = os_task_create(wpa2_task, "wpa2T", WPA2_TASK_STACK_SIZE, NULL, WPA2_TASK_PRIORITY, &s_wpa2_task_hdl);
if (ret != TRUE) {
wpa_printf(MSG_ERROR, "wps enable: failed to create task");
ret = ESP_FAIL;
goto _err;
}
s_wifi_wpa2_sync_sem = os_semphr_create(1, 0);
if (!s_wifi_wpa2_sync_sem) {
wpa_printf(MSG_ERROR, "EAP: failed create wifi EAP task sync sem");
ret = ESP_FAIL;
goto _err;
}
wpa_printf(MSG_INFO, "wifi_task prio:%d, stack:%d", WPA2_TASK_PRIORITY, WPA2_TASK_STACK_SIZE);
#endif
sm->workaround = 1;
return ESP_OK;
_err:
eap_peer_sm_deinit();
return ret;
}
/**
* eap_peer_sm_deinit - Deinitialize and free an EAP peer state machine
* @sm: Pointer to EAP state machine allocated with eap_peer_sm_init()
*
* This function deinitializes EAP state machine and frees all allocated
* resources.
*/
static void eap_peer_sm_deinit(void)
{
struct eap_sm *sm = gEapSm;
if (sm == NULL) {
return;
}
eap_peer_config_deinit(sm);
eap_peer_blob_deinit(sm);
eap_deinit_prev_method(sm, "EAP deinit");
eap_sm_abort(sm);
tls_deinit(sm->ssl_ctx);
#ifdef USE_WPA2_TASK
wpa2_task_delete(0);
#endif
if (STAILQ_FIRST((&s_wpa2_rxq)) != NULL) {
wpa2_rxq_deinit();
}
if (s_wifi_wpa2_sync_sem) {
os_semphr_delete(s_wifi_wpa2_sync_sem);
s_wifi_wpa2_sync_sem = NULL;
}
if (s_wpa2_data_lock) {
os_mutex_delete(s_wpa2_data_lock);
s_wpa2_data_lock = NULL;
wpa_printf(MSG_DEBUG, "EAP: eap_peer_sm_deinit: free data lock");
}
if (s_wpa2_queue) {
os_queue_delete(s_wpa2_queue);
s_wpa2_queue = NULL;
}
os_free(sm);
gEapSm = NULL;
}
static esp_err_t esp_client_enable_fn(void *arg)
{
struct wpa2_funcs *wpa2_cb;
wpa_printf(MSG_INFO, "WiFi Enterprise enable");
wpa2_cb = (struct wpa2_funcs *)os_zalloc(sizeof(struct wpa2_funcs));
if (wpa2_cb == NULL) {
wpa_printf(MSG_ERROR, "EAP: no mem for eap cb");
return ESP_ERR_NO_MEM;
}
wpa2_cb->wpa2_sm_rx_eapol = wpa2_ent_rx_eapol;
wpa2_cb->wpa2_start = wpa2_start_eapol;
wpa2_cb->wpa2_init = eap_peer_sm_init;
wpa2_cb->wpa2_deinit = eap_peer_sm_deinit;
esp_wifi_register_wpa2_cb_internal(wpa2_cb);
wpa_printf(MSG_DEBUG, "WiFi Enterprise crypto init.\r");
#ifdef EAP_PEER_METHOD
if (eap_peer_register_methods()) {
wpa_printf(MSG_ERROR, "Register EAP Peer methods Failure");
}
#endif
return ESP_OK;
}
esp_err_t esp_wifi_sta_enterprise_enable(void)
{
wifi_wpa2_param_t param;
esp_err_t ret;
struct wpa_sm *sm = &gWpaSm;
wpa2_api_lock();
if (wpa2_is_enabled()) {
wpa_printf(MSG_INFO, "EAP: already enabled");
wpa2_api_unlock();
return ESP_OK;
}
param.fn = (wifi_wpa2_fn_t)esp_client_enable_fn;
param.param = NULL;
ret = esp_wifi_sta_wpa2_ent_enable_internal(¶m);
if (ESP_OK == ret) {
wpa2_set_state(WPA2_STATE_ENABLED);
sm->wpa_sm_eap_disable = esp_wifi_sta_enterprise_disable;
} else {
wpa_printf(MSG_ERROR, "failed to enable eap ret=%d", ret);
}
wpa2_api_unlock();
return ret;
}
static esp_err_t eap_client_disable_fn(void *param)
{
struct wpa_sm *sm = &gWpaSm;
wpa_printf(MSG_INFO, "WiFi enterprise disable");
esp_wifi_unregister_wpa2_cb_internal();
if (gEapSm) {
eap_peer_sm_deinit();
}
#ifdef EAP_PEER_METHOD
eap_peer_unregister_methods();
#endif
sm->wpa_sm_eap_disable = NULL;
return ESP_OK;
}
esp_err_t esp_wifi_sta_enterprise_disable(void)
{
wifi_wpa2_param_t param;
esp_err_t ret;
wpa2_api_lock();
if (wpa2_is_disabled()) {
wpa_printf(MSG_INFO, "EAP: already disabled");
wpa2_api_unlock();
return ESP_OK;
}
param.fn = (wifi_wpa2_fn_t)eap_client_disable_fn;
param.param = 0;
ret = esp_wifi_sta_wpa2_ent_disable_internal(¶m);
if (ESP_OK == ret) {
wpa2_set_state(WPA2_STATE_DISABLED);
} else {
wpa_printf(MSG_ERROR, "failed to disable eap ret=%d", ret);
}
wpa2_api_unlock();
return ret;
}
esp_err_t esp_eap_client_set_certificate_and_key(const unsigned char *client_cert, int client_cert_len,
const unsigned char *private_key, int private_key_len,
const unsigned char *private_key_passwd, int private_key_passwd_len)
{
if (client_cert && client_cert_len > 0) {
g_wpa_client_cert = client_cert;
g_wpa_client_cert_len = client_cert_len;
}
if (private_key && private_key_len > 0) {
g_wpa_private_key = private_key;
g_wpa_private_key_len = private_key_len;
}
if (private_key_passwd && private_key_passwd_len > 0) {
g_wpa_private_key_passwd = private_key_passwd;
g_wpa_private_key_passwd_len = private_key_passwd_len;
}
return ESP_OK;
}
void esp_eap_client_clear_certificate_and_key(void)
{
g_wpa_client_cert = NULL;
g_wpa_client_cert_len = 0;
g_wpa_private_key = NULL;
g_wpa_private_key_len = 0;
g_wpa_private_key_passwd = NULL;
g_wpa_private_key_passwd_len = 0;
os_free(g_wpa_pac_file);
g_wpa_pac_file = NULL;
g_wpa_pac_file_len = 0;
}
esp_err_t esp_eap_client_set_ca_cert(const unsigned char *ca_cert, int ca_cert_len)
{
if (ca_cert && ca_cert_len > 0) {
g_wpa_ca_cert = ca_cert;
g_wpa_ca_cert_len = ca_cert_len;
}
return ESP_OK;
}
void esp_eap_client_clear_ca_cert(void)
{
g_wpa_ca_cert = NULL;
g_wpa_ca_cert_len = 0;
}
#define ANONYMOUS_ID_LEN_MAX 128
esp_err_t esp_eap_client_set_identity(const unsigned char *identity, int len)
{
if (len <= 0 || len > ANONYMOUS_ID_LEN_MAX) {
return ESP_ERR_INVALID_ARG;
}
if (g_wpa_anonymous_identity) {
os_free(g_wpa_anonymous_identity);
g_wpa_anonymous_identity = NULL;
}
g_wpa_anonymous_identity = (u8 *)os_zalloc(len);
if (g_wpa_anonymous_identity == NULL) {
return ESP_ERR_NO_MEM;
}
os_memcpy(g_wpa_anonymous_identity, identity, len);
g_wpa_anonymous_identity_len = len;
return ESP_OK;
}
void esp_eap_client_clear_identity(void)
{
if (g_wpa_anonymous_identity) {
os_free(g_wpa_anonymous_identity);
}
g_wpa_anonymous_identity = NULL;
g_wpa_anonymous_identity_len = 0;
}
#define USERNAME_LEN_MAX 128
esp_err_t esp_eap_client_set_username(const unsigned char *username, int len)
{
if (len <= 0 || len > USERNAME_LEN_MAX) {
return ESP_ERR_INVALID_ARG;
}
if (g_wpa_username) {
os_free(g_wpa_username);
g_wpa_username = NULL;
}
g_wpa_username = (u8 *)os_zalloc(len);
if (g_wpa_username == NULL) {
return ESP_ERR_NO_MEM;
}
os_memcpy(g_wpa_username, username, len);
g_wpa_username_len = len;
return ESP_OK;
}
void esp_eap_client_clear_username(void)
{
if (g_wpa_username) {
os_free(g_wpa_username);
}
g_wpa_username = NULL;
g_wpa_username_len = 0;
}
esp_err_t esp_eap_client_set_password(const unsigned char *password, int len)
{
if (len <= 0) {
return ESP_ERR_INVALID_ARG;
}
if (g_wpa_password) {
os_free(g_wpa_password);
g_wpa_password = NULL;
}
g_wpa_password = (u8 *)os_zalloc(len);
if (g_wpa_password == NULL) {
return ESP_ERR_NO_MEM;
}
os_memcpy(g_wpa_password, password, len);
g_wpa_password_len = len;
return ESP_OK;
}
void esp_eap_client_clear_password(void)
{
if (g_wpa_password) {
os_free(g_wpa_password);
}
g_wpa_password = NULL;
g_wpa_password_len = 0;
}
esp_err_t esp_eap_client_set_new_password(const unsigned char *new_password, int len)
{
if (len <= 0) {
return ESP_ERR_INVALID_ARG;
}
if (g_wpa_new_password) {
os_free(g_wpa_new_password);
g_wpa_new_password = NULL;
}
g_wpa_new_password = (u8 *)os_zalloc(len);
if (g_wpa_new_password == NULL) {
return ESP_ERR_NO_MEM;
}
os_memcpy(g_wpa_new_password, new_password, len);
g_wpa_password_len = len;
return ESP_OK;
}
void esp_eap_client_clear_new_password(void)
{
if (g_wpa_new_password) {
os_free(g_wpa_new_password);
}
g_wpa_new_password = NULL;
g_wpa_new_password_len = 0;
}
esp_err_t esp_eap_client_set_disable_time_check(bool disable)
{
s_disable_time_check = disable;
return ESP_OK;
}
bool wifi_sta_get_enterprise_disable_time_check(void)
{
return s_disable_time_check;
}
esp_err_t esp_eap_client_get_disable_time_check(bool *disable)
{
*disable = wifi_sta_get_enterprise_disable_time_check();
return ESP_OK;
}
esp_err_t esp_eap_client_set_ttls_phase2_method(esp_eap_ttls_phase2_types type)
{
switch (type) {
case ESP_EAP_TTLS_PHASE2_EAP:
g_wpa_ttls_phase2_type = "auth=EAP";
break;
case ESP_EAP_TTLS_PHASE2_MSCHAPV2:
g_wpa_ttls_phase2_type = "auth=MSCHAPV2";
break;
case ESP_EAP_TTLS_PHASE2_MSCHAP:
g_wpa_ttls_phase2_type = "auth=MSCHAP";
break;
case ESP_EAP_TTLS_PHASE2_PAP:
g_wpa_ttls_phase2_type = "auth=PAP";
break;
case ESP_EAP_TTLS_PHASE2_CHAP:
g_wpa_ttls_phase2_type = "auth=CHAP";
break;
default:
g_wpa_ttls_phase2_type = "auth=MSCHAPV2";
break;
}
return ESP_OK;
}
esp_err_t esp_eap_client_set_suiteb_192bit_certification(bool enable)
{
#ifdef CONFIG_SUITEB192
g_wpa_suiteb_certification = enable;
return ESP_OK;
#else
return ESP_FAIL;
#endif
}
esp_err_t esp_eap_client_set_pac_file(const unsigned char *pac_file, int pac_file_len)
{
if (pac_file && pac_file_len > -1) {
if (pac_file_len < 512) { // The file contains less than 1 pac and is to be rewritten later
g_wpa_pac_file = (u8 *)os_zalloc(512);
if (g_wpa_pac_file == NULL) {
return ESP_ERR_NO_MEM;
}
g_wpa_pac_file_len = 0;
} else { // The file contains pac data
g_wpa_pac_file = (u8 *)os_zalloc(pac_file_len);
if (g_wpa_pac_file == NULL) {
return ESP_ERR_NO_MEM;
}
os_memcpy(g_wpa_pac_file, pac_file, pac_file_len);
g_wpa_pac_file_len = pac_file_len;
}
} else {
return ESP_FAIL;
}
return ESP_OK;
}
esp_err_t esp_eap_client_set_fast_params(esp_eap_fast_config config)
{
char config_for_supplicant[PHASE1_PARAM_STRING_LEN] = "";
if ((config.fast_provisioning > -1) && (config.fast_provisioning <= 2)) {
os_snprintf((char *) &config_for_supplicant, PHASE1_PARAM_STRING_LEN, "fast_provisioning=%d ", config.fast_provisioning);
} else {
return ESP_ERR_INVALID_ARG;
}
if (config.fast_max_pac_list_len && config.fast_max_pac_list_len < 100) {
os_snprintf((char *) &config_for_supplicant + strlen(config_for_supplicant),
PHASE1_PARAM_STRING_LEN - strlen(config_for_supplicant),
"fast_max_pac_list_len=%d ", config.fast_max_pac_list_len);
} else if (config.fast_max_pac_list_len >= 100) {
return ESP_ERR_INVALID_ARG;
}
if (config.fast_pac_format_binary) {
os_strcat((char *) &config_for_supplicant, (const char *) "fast_pac_format=binary");
}
// Free the old buffer if it already exists
if (g_wpa_phase1_options != NULL) {
os_free(g_wpa_phase1_options);
}
g_wpa_phase1_options = (char *)os_zalloc(sizeof(config_for_supplicant));
if (g_wpa_phase1_options == NULL) {
return ESP_ERR_NO_MEM;
}
os_memcpy(g_wpa_phase1_options, &config_for_supplicant, sizeof(config_for_supplicant));
return ESP_OK;
}
esp_err_t esp_eap_client_use_default_cert_bundle(bool use_default_bundle)
{
#ifdef CONFIG_MBEDTLS_CERTIFICATE_BUNDLE
g_wpa_default_cert_bundle = use_default_bundle;
if (use_default_bundle) {
esp_crt_bundle_attach_fn = esp_crt_bundle_attach;
} else {
esp_crt_bundle_attach_fn = NULL;
}
return ESP_OK;
#else
return ESP_FAIL;
#endif
}
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