631 lines
20 KiB
C
631 lines
20 KiB
C
/* client-tls.c
|
|
*
|
|
* Copyright (C) 2006-2025 wolfSSL Inc.
|
|
*
|
|
* This file is part of wolfSSL.
|
|
*
|
|
* wolfSSL is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* wolfSSL is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
|
|
*/
|
|
|
|
#include "client-tls.h"
|
|
|
|
/* Espressif FreeRTOS */
|
|
#ifndef SINGLE_THREADED
|
|
#include <freertos/FreeRTOS.h>
|
|
#include <freertos/task.h>
|
|
#include <freertos/event_groups.h>
|
|
#endif
|
|
|
|
/* Espressif */
|
|
#include <esp_log.h>
|
|
|
|
/* socket includes */
|
|
#include <lwip/netdb.h>
|
|
#include <lwip/sockets.h>
|
|
|
|
/* wolfSSL */
|
|
#include <wolfssl/wolfcrypt/settings.h>
|
|
/* This project not yet using the library */
|
|
#undef USE_WOLFSSL_ESP_SDK_WIFI
|
|
#include <wolfssl/ssl.h>
|
|
|
|
#if defined(WOLFSSL_WC_MLKEM)
|
|
#include <wolfssl/wolfcrypt/mlkem.h>
|
|
#include <wolfssl/wolfcrypt/wc_mlkem.h>
|
|
#endif
|
|
#if defined(USE_CERT_BUFFERS_2048) || defined(USE_CERT_BUFFERS_1024)
|
|
#include <wolfssl/certs_test.h>
|
|
#endif
|
|
#ifdef WOLFSSL_TRACK_MEMORY
|
|
#include <wolfssl/wolfcrypt/mem_track.h>
|
|
#endif
|
|
|
|
#ifndef NO_DH
|
|
/* see also wolfssl/test.h */
|
|
#undef DEFAULT_MIN_DHKEY_BITS
|
|
#define DEFAULT_MIN_DHKEY_BITS 1024
|
|
|
|
#undef DEFAULT_MAX_DHKEY_BITS
|
|
#define DEFAULT_MAX_DHKEY_BITS 2048
|
|
#endif
|
|
|
|
/* Project */
|
|
#include "wifi_connect.h"
|
|
#include "time_helper.h"
|
|
|
|
/* working TLS 1.2 VS client app commandline param:
|
|
*
|
|
* -h 192.168.1.128 -v 3 -l ECDHE-ECDSA-SM4-CBC-SM3 -c ./certs/sm2/client-sm2.pem -k ./certs/sm2/client-sm2-priv.pem -A ./certs/sm2/root-sm2.pem -C
|
|
*
|
|
* working Linux, non-working VS c app
|
|
*
|
|
* -h 192.168.1.128 -v 4 -l TLS13-SM4-CCM-SM3 -c ./certs/sm2/client-sm2.pem -k ./certs/sm2/client-sm2-priv.pem -A ./certs/sm2/root-sm2.pem -C
|
|
*
|
|
**/
|
|
#define TAG "client-tls"
|
|
|
|
#if defined(DEBUG_WOLFSSL)
|
|
int stack_start = -1;
|
|
|
|
int ShowCiphers(WOLFSSL* ssl)
|
|
{
|
|
#define CLIENT_TLS_MAX_CIPHER_LENGTH 4096
|
|
char ciphers[CLIENT_TLS_MAX_CIPHER_LENGTH];
|
|
const char* cipher_used;
|
|
int ret = 0;
|
|
|
|
if (ssl == NULL) {
|
|
ESP_LOGI(TAG, "WOLFSSL* ssl is NULL, so no cipher in use");
|
|
ret = wolfSSL_get_ciphers(ciphers, (int)sizeof(ciphers));
|
|
if (ret == WOLFSSL_SUCCESS) {
|
|
for (int i = 0; i < CLIENT_TLS_MAX_CIPHER_LENGTH; i++) {
|
|
if (ciphers[i] == ':') {
|
|
ciphers[i] = '\n';
|
|
}
|
|
}
|
|
ESP_LOGI(TAG, "Available Ciphers:\n%s\n", ciphers);
|
|
}
|
|
else {
|
|
ESP_LOGE(TAG, "Failed to call wolfSSL_get_ciphers. Error %d", ret);
|
|
}
|
|
}
|
|
else {
|
|
cipher_used = wolfSSL_get_cipher_name(ssl);
|
|
ESP_LOGI(TAG, "WOLFSSL* ssl using %s", cipher_used);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
#endif
|
|
|
|
#if defined(WOLFSSL_ESPWROOM32SE) && defined(HAVE_PK_CALLBACKS) \
|
|
&& defined(WOLFSSL_ATECC508A)
|
|
|
|
#include "wolfssl/wolfcrypt/port/atmel/atmel.h"
|
|
|
|
/* when you want to use custom slot allocation */
|
|
/* enable the definition CUSTOM_SLOT_ALLOCATION.*/
|
|
|
|
#if defined(CUSTOM_SLOT_ALLOCATION)
|
|
|
|
static byte mSlotList[ATECC_MAX_SLOT];
|
|
|
|
int atmel_set_slot_allocator(atmel_slot_alloc_cb alloc,
|
|
atmel_slot_dealloc_cb dealloc);
|
|
/* initialize slot array */
|
|
void my_atmel_slotInit()
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < ATECC_MAX_SLOT; i++) {
|
|
mSlotList[i] = ATECC_INVALID_SLOT;
|
|
}
|
|
}
|
|
/* allocate slot depending on slotType */
|
|
int my_atmel_alloc(int slotType)
|
|
{
|
|
int i, slot = -1;
|
|
|
|
switch (slotType) {
|
|
case ATMEL_SLOT_ENCKEY:
|
|
slot = 2;
|
|
break;
|
|
case ATMEL_SLOT_DEVICE:
|
|
slot = 0;
|
|
break;
|
|
case ATMEL_SLOT_ECDHE:
|
|
slot = 0;
|
|
break;
|
|
case ATMEL_SLOT_ECDHE_ENC:
|
|
slot = 4;
|
|
break;
|
|
case ATMEL_SLOT_ANY:
|
|
for (i = 0; i < ATECC_MAX_SLOT; i++) {
|
|
if (mSlotList[i] == ATECC_INVALID_SLOT) {
|
|
slot = i;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
return slot;
|
|
}
|
|
/* free slot array */
|
|
void my_atmel_free(int slotId)
|
|
{
|
|
if (slotId >= 0 && slotId < ATECC_MAX_SLOT) {
|
|
mSlotList[slotId] = ATECC_INVALID_SLOT;
|
|
}
|
|
}
|
|
#endif /* CUSTOM_SLOT_ALLOCATION */
|
|
#endif /* WOLFSSL_ESPWROOM32SE && HAVE_PK_CALLBACK && WOLFSSL_ATECC508A */
|
|
|
|
/* client task */
|
|
WOLFSSL_ESP_TASK tls_smp_client_task(void* args)
|
|
{
|
|
#if defined(SINGLE_THREADED)
|
|
int ret = ESP_OK;
|
|
#define TLS_SMP_CLIENT_TASK_RET ret
|
|
#else
|
|
#define TLS_SMP_CLIENT_TASK_RET
|
|
#endif
|
|
char buff[256];
|
|
const char sndMsg[] = "GET /index.html HTTP/1.0\r\n\r\n";
|
|
const char* ch = TLS_SMP_TARGET_HOST; /* see wifi_connect.h */
|
|
struct sockaddr_in servAddr;
|
|
|
|
struct hostent *hp;
|
|
struct ip4_addr *ip4_addr;
|
|
int ret_i; /* interim return values */
|
|
int err; /* interim return values */
|
|
int sockfd;
|
|
int doPeerCheck;
|
|
int sendGet;
|
|
#ifdef DEBUG_WOLFSSL
|
|
int this_heap = 0;
|
|
#endif
|
|
#ifndef NO_DH
|
|
int minDhKeyBits = DEFAULT_MIN_DHKEY_BITS;
|
|
#endif
|
|
|
|
/* declare wolfSSL objects */
|
|
WOLFSSL_CTX* ctx;
|
|
WOLFSSL* ssl;
|
|
|
|
size_t len;
|
|
|
|
WOLFSSL_ENTER(TLS_SMP_CLIENT_TASK_NAME);
|
|
|
|
doPeerCheck = 1;
|
|
sendGet = 0;
|
|
|
|
#ifdef DEBUG_WOLFSSL
|
|
WOLFSSL_MSG("Debug ON");
|
|
ShowCiphers(NULL);
|
|
#endif
|
|
/* Initialize wolfSSL */
|
|
wolfSSL_Init();
|
|
|
|
/* Create a socket that uses an Internet IPv4 address,
|
|
* Sets the socket to be stream based (TCP),
|
|
* 0 means choose the default protocol. */
|
|
if ((sockfd = socket(AF_INET, SOCK_STREAM, 0)) == -1) {
|
|
ESP_LOGE(TAG, "ERROR: failed to create the socket\n");
|
|
}
|
|
|
|
ESP_LOGI(TAG, "get target IP address");
|
|
|
|
hp = gethostbyname(TLS_SMP_TARGET_HOST);
|
|
if (!hp) {
|
|
ESP_LOGE(TAG, "Failed to get host name.");
|
|
ip4_addr = NULL;
|
|
}
|
|
else {
|
|
ip4_addr = (struct ip4_addr *)hp->h_addr;
|
|
}
|
|
|
|
/* Create and initialize WOLFSSL_CTX */
|
|
ctx = wolfSSL_CTX_new(wolfSSLv23_client_method()); /* SSL 3.0 - TLS 1.3. */
|
|
/* options: */
|
|
/* ctx = wolfSSL_CTX_new(wolfSSLv1_2_client_method()); only TLS 1.2 */
|
|
/* ctx = wolfSSL_CTX_new(wolfSSLv1_3_client_method()); only TLS 1.3 */
|
|
/* wolfSSL_CTX_NoTicketTLSv12(); */
|
|
/* wolfSSL_NoTicketTLSv12(); */
|
|
if (ctx == NULL) {
|
|
ESP_LOGE(TAG, "ERROR: failed to create WOLFSSL_CTX\n");
|
|
}
|
|
|
|
#if defined(WOLFSSL_ESP32_CIPHER_SUITE)
|
|
ESP_LOGI(TAG, "Start SM2\n");
|
|
|
|
/*
|
|
*
|
|
* reference code for SM Ciphers:
|
|
*
|
|
#if defined(HAVE_AESGCM) && !defined(NO_DH)
|
|
#ifdef WOLFSSL_TLS13
|
|
defaultCipherList = "TLS13-AES128-GCM-SHA256"
|
|
#ifndef WOLFSSL_NO_TLS12
|
|
":DHE-PSK-AES128-GCM-SHA256"
|
|
#endif
|
|
;
|
|
#else
|
|
defaultCipherList = "DHE-PSK-AES128-GCM-SHA256";
|
|
#endif
|
|
#elif defined(HAVE_AESGCM) && defined(WOLFSSL_TLS13)
|
|
defaultCipherList = "TLS13-AES128-GCM-SHA256:PSK-AES128-GCM-SHA256"
|
|
#ifndef WOLFSSL_NO_TLS12
|
|
":PSK-AES128-GCM-SHA256"
|
|
#endif
|
|
;
|
|
#elif defined(HAVE_NULL_CIPHER)
|
|
defaultCipherList = "PSK-NULL-SHA256";
|
|
#elif !defined(NO_AES_CBC)
|
|
defaultCipherList = "PSK-AES128-CBC-SHA256";
|
|
#else
|
|
defaultCipherList = "PSK-AES128-GCM-SHA256";
|
|
#endif
|
|
*/
|
|
|
|
ret = wolfSSL_CTX_set_cipher_list(ctx, WOLFSSL_ESP32_CIPHER_SUITE);
|
|
if (ret == WOLFSSL_SUCCESS) {
|
|
ESP_LOGI(TAG, "Set cipher list: %s\n", WOLFSSL_ESP32_CIPHER_SUITE);
|
|
}
|
|
else {
|
|
ESP_LOGE(TAG, "ERROR: failed to set cipher list: %s\n",
|
|
WOLFSSL_ESP32_CIPHER_SUITE);
|
|
}
|
|
#endif
|
|
|
|
#ifdef DEBUG_WOLFSSL
|
|
ShowCiphers(NULL);
|
|
ESP_LOGI(TAG, "Stack used: %d\n",
|
|
CONFIG_ESP_MAIN_TASK_STACK_SIZE
|
|
- uxTaskGetStackHighWaterMark(NULL));
|
|
#endif
|
|
|
|
/* see user_settings PROJECT_DH for HAVE_DH and HAVE_FFDHE_2048 */
|
|
#ifndef NO_DH
|
|
ret_i = wolfSSL_CTX_SetMinDhKey_Sz(ctx, (word16)minDhKeyBits);
|
|
if (ret_i != WOLFSSL_SUCCESS) {
|
|
ESP_LOGE(TAG, "Error setting minimum DH key size");
|
|
}
|
|
#endif
|
|
|
|
/* no peer check */
|
|
if (doPeerCheck == 0) {
|
|
ESP_LOGW(TAG, "doPeerCheck == 0; WOLFSSL_VERIFY_NONE");
|
|
wolfSSL_CTX_set_verify(ctx, WOLFSSL_VERIFY_NONE, 0);
|
|
}
|
|
else {
|
|
ESP_LOGI(TAG, "doPeerCheck != 0");
|
|
WOLFSSL_MSG("Loading... our cert");
|
|
/* load our certificate */
|
|
ret_i = wolfSSL_CTX_use_certificate_chain_buffer_format(ctx,
|
|
CTX_CLIENT_CERT,
|
|
CTX_CLIENT_CERT_SIZE,
|
|
CTX_CLIENT_CERT_TYPE);
|
|
if (ret_i != WOLFSSL_SUCCESS) {
|
|
ESP_LOGE(TAG, "ERROR: failed to load our cert chain %d, "
|
|
"please check the file.", ret_i);
|
|
}
|
|
|
|
/* Load client certificates into WOLFSSL_CTX */
|
|
WOLFSSL_MSG("Loading... CA cert");
|
|
ret_i = wolfSSL_CTX_load_verify_buffer(ctx,
|
|
CTX_CA_CERT,
|
|
CTX_CA_CERT_SIZE,
|
|
CTX_CA_CERT_TYPE);
|
|
if (ret_i != WOLFSSL_SUCCESS) {
|
|
ESP_LOGE(TAG, "ERROR: failed to load CA cert %d, "
|
|
"please check the file.\n", ret_i) ;
|
|
}
|
|
|
|
WOLFSSL_MSG("Loading... our key");
|
|
ret_i = wolfSSL_CTX_use_PrivateKey_buffer(ctx,
|
|
CTX_CLIENT_KEY,
|
|
CTX_CLIENT_KEY_SIZE,
|
|
CTX_CLIENT_KEY_TYPE);
|
|
if (ret_i != WOLFSSL_SUCCESS) {
|
|
ESP_LOGE(TAG, "ERROR: failed to load key %d, "
|
|
"please check the file.\n", ret_i) ;
|
|
}
|
|
|
|
wolfSSL_CTX_set_verify(ctx, WOLFSSL_VERIFY_PEER, 0);
|
|
}
|
|
|
|
/* Initialize the server address struct with zeros */
|
|
memset(&servAddr, 0, sizeof(servAddr));
|
|
|
|
/* Fill in the server address */
|
|
servAddr.sin_family = AF_INET; /* using IPv4 */
|
|
servAddr.sin_port = htons(TLS_SMP_DEFAULT_PORT); /* on DEFAULT_PORT */
|
|
|
|
if (*ch >= '1' && *ch <= '9') {
|
|
/* Get the server IPv4 address from the command line call */
|
|
WOLFSSL_MSG("inet_pton");
|
|
if ((ret_i = inet_pton(AF_INET,
|
|
TLS_SMP_TARGET_HOST,
|
|
&servAddr.sin_addr)) != 1) {
|
|
ESP_LOGE(TAG, "ERROR: invalid address ret=%d\n", ret_i);
|
|
}
|
|
}
|
|
else {
|
|
servAddr.sin_addr.s_addr = ip4_addr->addr;
|
|
}
|
|
|
|
/* Connect to the server */
|
|
sprintf(buff,
|
|
"Connecting to server....%s (port:%d)",
|
|
TLS_SMP_TARGET_HOST,
|
|
TLS_SMP_DEFAULT_PORT);
|
|
ESP_LOGI(TAG, "%s\n", buff);
|
|
|
|
if ((ret_i = connect(sockfd,
|
|
(struct sockaddr *)&servAddr,
|
|
sizeof(servAddr))) == -1) {
|
|
ESP_LOGE(TAG, "ERROR: failed to connect ret=%d\n", ret_i);
|
|
}
|
|
|
|
#if defined(WOLFSSL_EXPERIMENTAL_SETTINGS)
|
|
ESP_LOGW(TAG, "WOLFSSL_EXPERIMENTAL_SETTINGS is enabled");
|
|
#endif
|
|
|
|
WOLFSSL_MSG("Create a WOLFSSL object");
|
|
/* Create a WOLFSSL object */
|
|
if ((ssl = wolfSSL_new(ctx)) == NULL) {
|
|
ESP_LOGE(TAG, "ERROR: failed to create WOLFSSL object\n");
|
|
}
|
|
else {
|
|
#ifdef DEBUG_WOLFSSL
|
|
ESP_LOGI(TAG, "\nCreated WOLFSSL object:");
|
|
ShowCiphers(ssl);
|
|
this_heap = esp_get_free_heap_size();
|
|
ESP_LOGI(TAG, "tls_smp_client_task heap @ %p = %d",
|
|
&this_heap, this_heap);
|
|
#endif
|
|
|
|
#if defined(CONFIG_ESP_WOLFSSL_ENABLE_MLKEM)
|
|
/* Kconfig ESP_WOLFSSL_ENABLE_MLKEM triggers settings in user_setting.h */
|
|
ESP_LOGI(TAG, "Espressif CONFIG_ESP_WOLFSSL_ENABLE_MLKEM is defined");
|
|
#endif
|
|
#if defined(WOLFSSL_HAVE_MLKEM)
|
|
ESP_LOGI(TAG, "WOLFSSL_MLKEM_KYBER is defined");
|
|
#if defined(WOLFSSL_KYBER1024) || !defined(WOLFSSL_NO_ML_KEM_1024)
|
|
#if defined(WOLFSSL_MLKEM_KYBER)
|
|
ESP_LOGW(TAG, "WOLFSSL_MLKEM_KYBER is enabled, setting key share: "
|
|
"WOLFSSL_P521_KYBER_LEVEL5");
|
|
ret_i = wolfSSL_UseKeyShare(ssl, WOLFSSL_P521_KYBER_LEVEL5);
|
|
#else
|
|
ESP_LOGI(TAG, "WOLFSSL_HAVE_MLKEM is enabled, setting key share: "
|
|
"WOLFSSL_ML_KEM_1024");
|
|
ESP_LOGW(TAG, "Note: Wireshark as of 4.4.6 reports as frodo976aes");
|
|
ret_i = wolfSSL_UseKeyShare(ssl, WOLFSSL_ML_KEM_1024);
|
|
#endif
|
|
#elif defined(WOLFSSL_KYBER768) || !defined(WOLFSSL_NO_ML_KEM_768)
|
|
#if defined(WOLFSSL_MLKEM_KYBER)
|
|
ESP_LOGW(TAG, "WOLFSSL_MLKEM_KYBER is enabled, setting key share: "
|
|
"WOLFSSL_P256_KYBER_LEVEL3");
|
|
ret_i = wolfSSL_UseKeyShare(ssl, WOLFSSL_P256_KYBER_LEVEL3);
|
|
#else
|
|
ESP_LOGI(TAG, "WOLFSSL_HAVE_MLKEM is enabled, setting key share: "
|
|
"WOLFSSL_ML_KEM_768");
|
|
ESP_LOGW(TAG, "Note: Wireshark as of 4.4.6 reports as frodo976aes");
|
|
ret_i = wolfSSL_UseKeyShare(ssl, WOLFSSL_ML_KEM_768);
|
|
#endif
|
|
#elif defined(WOLFSSL_KYBER512) || !defined(WOLFSSL_NO_ML_KEM_512)
|
|
/* This will typically be a low memory situation, such as ESP8266 */
|
|
#if defined(WOLFSSL_MLKEM_KYBER)
|
|
ESP_LOGW(TAG, "WOLFSSL_MLKEM_KYBER is enabled, setting key share: "
|
|
"WOLFSSL_P256_KYBER_LEVEL1");
|
|
ret_i = wolfSSL_UseKeyShare(ssl, WOLFSSL_P256_KYBER_LEVEL1);
|
|
#else
|
|
ESP_LOGI(TAG, "WOLFSSL_HAVE_MLKEM is enabled, setting key share: "
|
|
"WOLFSSL_ML_KEM_512");
|
|
ESP_LOGW(TAG, "Note: Wireshark as of 4.4.6 reports as frodo976aes");
|
|
ret_i = wolfSSL_UseKeyShare(ssl, WOLFSSL_ML_KEM_512);
|
|
#endif
|
|
#else
|
|
ESP_LOGW(TAG, "WOLFSSL_HAVE_MLKEM enabled but no key size available.");
|
|
ret_i = ESP_FAIL;
|
|
#endif
|
|
if (ret_i == WOLFSSL_SUCCESS) {
|
|
ESP_LOGI(TAG, "UseKeyShare Kyber success");
|
|
}
|
|
else {
|
|
ESP_LOGE(TAG, "UseKeyShare Kyber failed");
|
|
}
|
|
#else
|
|
ESP_LOGI(TAG, "WOLFSSL_HAVE_MLKEM is not enabled");
|
|
#endif
|
|
}
|
|
|
|
#if defined(WOLFSSL_SM2)
|
|
/* SM TLS1.3 Cipher needs to have key share explicitly set. */
|
|
ret = wolfSSL_UseKeyShare(ssl, WOLFSSL_ECC_SM2P256V1);
|
|
if (ret == WOLFSSL_SUCCESS) {
|
|
ESP_LOGI(TAG, "Successfully set WOLFSSL_ECC_SM2P256V1");
|
|
}
|
|
else {
|
|
ESP_LOGE(TAG, "FAILED to set WOLFSSL_ECC_SM2P256V1");
|
|
}
|
|
#endif
|
|
/* when using atecc608a on esp32-wroom-32se */
|
|
|
|
#if defined(WOLFSSL_ESPWROOM32SE) && defined(HAVE_PK_CALLBACKS) \
|
|
&& defined(WOLFSSL_ATECC508A)
|
|
atcatls_set_callbacks(ctx);
|
|
/* when using custom slot-allocation */
|
|
#if defined(CUSTOM_SLOT_ALLOCATION)
|
|
my_atmel_slotInit();
|
|
atmel_set_slot_allocator(my_atmel_alloc, my_atmel_free);
|
|
#endif
|
|
#endif
|
|
#ifdef DEBUG_WOLFSSL
|
|
this_heap = esp_get_free_heap_size();
|
|
ESP_LOGI(TAG, "tls_smp_client_task heap(2) @ %p = %d",
|
|
&this_heap, this_heap);
|
|
#endif
|
|
/* Attach wolfSSL to the socket */
|
|
ret_i = wolfSSL_set_fd(ssl, sockfd);
|
|
if (ret_i == WOLFSSL_SUCCESS) {
|
|
ESP_LOGI(TAG, "wolfSSL_set_fd success");
|
|
}
|
|
else {
|
|
ESP_LOGE(TAG, "ERROR: failed wolfSSL_set_fd. Error: %d\n", ret_i);
|
|
}
|
|
|
|
ESP_LOGI(TAG, "Connect to wolfSSL server...");
|
|
#ifdef DEBUG_WOLFSSL
|
|
wolfSSL_Debugging_ON();
|
|
#endif
|
|
ret_i = wolfSSL_connect(ssl);
|
|
#ifdef DEBUG_WOLFSSL
|
|
this_heap = esp_get_free_heap_size();
|
|
ESP_LOGI(TAG, "tls_smp_client_task heap(3) @ %p = %d",
|
|
&this_heap, this_heap);
|
|
#endif
|
|
if (ret_i == WOLFSSL_SUCCESS) {
|
|
#ifdef DEBUG_WOLFSSL
|
|
ShowCiphers(ssl);
|
|
#endif
|
|
ESP_LOGI(TAG, "Connect success! Sending message...");
|
|
/* Get a message for the server from stdin */
|
|
WOLFSSL_MSG("Message for server: ");
|
|
memset(buff, 0, sizeof(buff));
|
|
|
|
if (sendGet) {
|
|
len = XSTRLEN(sndMsg);
|
|
strncpy(buff, sndMsg, len);
|
|
}
|
|
else {
|
|
sprintf(buff, "Hello from Espressif wolfSSL TLS client!\n");
|
|
len = strnlen(buff, sizeof(buff));
|
|
}
|
|
buff[len] = '\0';
|
|
ESP_LOGI(TAG, "SSL connect ok, sending message:\n\n%s\n", buff);
|
|
|
|
/* Send the message to the server */
|
|
do {
|
|
err = 0; /* reset error */
|
|
ret_i = wolfSSL_write(ssl, buff, len);
|
|
if (ret_i <= 0) {
|
|
err = wolfSSL_get_error(ssl, 0);
|
|
}
|
|
} while (err == WOLFSSL_ERROR_WANT_WRITE ||
|
|
err == WOLFSSL_ERROR_WANT_READ);
|
|
|
|
if (ret_i != len) {
|
|
ESP_LOGE(TAG, "ERROR: failed to write\n");
|
|
}
|
|
else {
|
|
ESP_LOGI(TAG, "Message sent! Awaiting response...");
|
|
}
|
|
|
|
/* Read the server data into our buff array */
|
|
memset(buff, 0, sizeof(buff));
|
|
|
|
do {
|
|
err = 0; /* reset error */
|
|
ret_i =wolfSSL_read(ssl, buff, sizeof(buff));
|
|
if (ret_i <= 0) {
|
|
err = wolfSSL_get_error(ssl, 0);
|
|
}
|
|
} while ((err == WOLFSSL_ERROR_WANT_READ) ||
|
|
(err == WOLFSSL_ERROR_WANT_WRITE) );
|
|
|
|
if (ret_i < 0) {
|
|
ESP_LOGE(TAG, "ERROR: failed to read\n");
|
|
}
|
|
|
|
/* Show any data the server sends */
|
|
ESP_LOGI(TAG, "Server response: \n\n%s\n", buff);
|
|
|
|
ret_i = wolfSSL_shutdown(ssl);
|
|
while (ret_i == WOLFSSL_SHUTDOWN_NOT_DONE) {
|
|
ret_i = wolfSSL_shutdown(ssl); /* bidirectional shutdown */
|
|
if (ret_i == WOLFSSL_SUCCESS) {
|
|
ESP_LOGI(TAG, "Bidirectional shutdown complete\n");
|
|
break;
|
|
}
|
|
else if (ret_i != WOLFSSL_SHUTDOWN_NOT_DONE) {
|
|
ESP_LOGE(TAG, "Bidirectional shutdown failed\n");
|
|
break;
|
|
}
|
|
}
|
|
if (ret_i != WOLFSSL_SUCCESS) {
|
|
ESP_LOGE(TAG, "Bidirectional shutdown failed\n");
|
|
}
|
|
|
|
} /* wolfSSL_connect(ssl) == WOLFSSL_SUCCESS) */
|
|
else {
|
|
ESP_LOGE(TAG, "ERROR: failed to connect to wolfSSL. "
|
|
"Error: %d\n", ret_i);
|
|
}
|
|
#ifdef DEBUG_WOLFSSL
|
|
ShowCiphers(ssl);
|
|
#endif
|
|
|
|
ESP_LOGI(TAG, "Cleanup and exit");
|
|
wolfSSL_free(ssl); /* Release the wolfSSL object memory */
|
|
wolfSSL_CTX_free(ctx); /* Free the wolfSSL context object */
|
|
wolfSSL_Cleanup(); /* Cleanup the wolfSSL environment */
|
|
close(sockfd); /* Close the connection to the server */
|
|
|
|
vTaskDelete(NULL);
|
|
|
|
return TLS_SMP_CLIENT_TASK_RET;
|
|
}
|
|
|
|
#if defined(SINGLE_THREADED)
|
|
/* we don't initialize a single thread, so no init function here */
|
|
#else
|
|
/* create task */
|
|
WOLFSSL_ESP_TASK tls_smp_client_init(void* args)
|
|
{
|
|
int ret;
|
|
#if ESP_IDF_VERSION_MAJOR >= 4
|
|
TaskHandle_t _handle;
|
|
#else
|
|
xTaskHandle _handle;
|
|
#endif
|
|
/* See Espressif api-reference/system/freertos_idf.html#functions */
|
|
if (TLS_SMP_CLIENT_TASK_BYTES < (6 * 1024)) {
|
|
/* Observed approximately 6KB limit for the RTOS task stack size.
|
|
* Reminder parameter is bytes, not words as with generic FreeRTOS. */
|
|
ESP_LOGW(TAG, "Warning: TLS_SMP_CLIENT_TASK_BYTES < 6KB");
|
|
}
|
|
#ifndef WOLFSSL_SMALL_STACK
|
|
ESP_LOGW(TAG, "WARNING: WOLFSSL_SMALL_STACK is not defined. Consider "
|
|
"defining that to reduce embedded memory usage.");
|
|
#endif
|
|
|
|
/* Note that despite vanilla FreeRTOS using WORDS for a parameter,
|
|
* Espressif uses BYTES for the task stack size here. */
|
|
ret = xTaskCreate(tls_smp_client_task,
|
|
TLS_SMP_CLIENT_TASK_NAME,
|
|
TLS_SMP_CLIENT_TASK_BYTES,
|
|
NULL,
|
|
TLS_SMP_CLIENT_TASK_PRIORITY,
|
|
&_handle);
|
|
|
|
if (ret != pdPASS) {
|
|
ESP_LOGI(TAG, "Create thread %s failed.", TLS_SMP_CLIENT_TASK_NAME);
|
|
}
|
|
return TLS_SMP_CLIENT_TASK_RET;
|
|
}
|
|
#endif
|