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esp_tls_wolfssl: Improved error messages

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This commit is contained in:
Aditya Patwardhan 2021-06-11 12:52:44 +05:30
parent 4af1176d15
commit 0e01a22264
2 changed files with 72 additions and 35 deletions
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4
components/esp-tls/esp_tls_mbedtls.c
View File

@ -45,7 +45,7 @@ static const char *TAG = "esp-tls-mbedtls";
static mbedtls_x509_crt *global_cacert = NULL;
/* This function shall return the error message when appropriate log level has been setotherwise this function will do nothing*/
/* This function shall return the error message when appropriate log level has been set, otherwise this function shall do nothing */
static void mbedtls_print_error_msg(int error)
{
#if (CONFIG_LOG_DEFAULT_LEVEL_DEBUG || CONFIG_LOG_DEFAULT_LEVEL_VERBOSE)
@ -471,6 +471,7 @@ esp_err_t set_client_config(const char *hostname, size_t hostlen, esp_tls_cfg_t
if ((ret = mbedtls_ssl_conf_alpn_protocols(&tls->conf, cfg->alpn_protos)) != 0) {
ESP_LOGE(TAG, "mbedtls_ssl_conf_alpn_protocols returned -0x%04X", -ret);
ESP_INT_EVENT_TRACKER_CAPTURE(tls->error_handle, ESP_TLS_ERR_TYPE_MBEDTLS, -ret);
mbedtls_print_error_msg(ret);
return ESP_ERR_MBEDTLS_SSL_CONF_ALPN_PROTOCOLS_FAILED;
}
#else
@ -759,6 +760,7 @@ static esp_err_t esp_set_atecc608a_pki_context(esp_tls_t *tls, esp_tls_cfg_t *cf
if (ret != 0) {
ESP_LOGE(TAG, "Failed to parse key from device");
ESP_INT_EVENT_TRACKER_CAPTURE(tls->error_handle, ESP_TLS_ERR_TYPE_MBEDTLS, -ret);
mbedtls_print_error_msg(ret);
return ESP_ERR_ESP_TLS_SE_FAILED;
}

103
components/esp-tls/esp_tls_wolfssl.c
View File

@ -48,6 +48,16 @@ static uint8_t psk_key_max_len = 0;
static esp_err_t set_server_config(esp_tls_cfg_server_t *cfg, esp_tls_t *tls);
#endif /* CONFIG_ESP_TLS_SERVER */
/* This function shall return the error message when appropriate log level has been set otherwise this function shall do nothing */
static void wolfssl_print_error_msg(int error)
{
#if (CONFIG_LOG_DEFAULT_LEVEL_DEBUG || CONFIG_LOG_DEFAULT_LEVEL_VERBOSE)
static char error_buf[100];
ESP_LOGE(TAG, "(%d) : %s", error, ERR_error_string(error, error_buf));
#endif
}
typedef enum x509_file_type {
FILE_TYPE_CA_CERT = 0, /* CA certificate to authenticate entity at other end */
FILE_TYPE_SELF_CERT, /* Self certificate of the entity */
@ -119,22 +129,24 @@ esp_err_t esp_create_wolfssl_handle(const char *hostname, size_t hostlen, const
ret = wolfSSL_Init();
if (ret != WOLFSSL_SUCCESS) {
ESP_LOGE(TAG, "Init wolfSSL failed: %d", ret);
ESP_INT_EVENT_TRACKER_CAPTURE(tls->error_handle, ESP_TLS_ERR_TYPE_WOLFSSL, -ret);
ESP_LOGE(TAG, "Init wolfSSL failed: 0x%04X", ret);
wolfssl_print_error_msg(ret);
int err = wolfSSL_get_error( (WOLFSSL *)tls->priv_ssl, ret);
ESP_INT_EVENT_TRACKER_CAPTURE(tls->error_handle, ESP_TLS_ERR_TYPE_WOLFSSL, err);
goto exit;
}
if (tls->role == ESP_TLS_CLIENT) {
esp_ret = set_client_config(hostname, hostlen, (esp_tls_cfg_t *)cfg, tls);
if (esp_ret != ESP_OK) {
ESP_LOGE(TAG, "Failed to set client configurations");
ESP_LOGE(TAG, "Failed to set client configurations, [0x%04X] (%s)", esp_ret, esp_err_to_name(esp_ret));
goto exit;
}
} else if (tls->role == ESP_TLS_SERVER) {
#ifdef CONFIG_ESP_TLS_SERVER
esp_ret = set_server_config((esp_tls_cfg_server_t *) cfg, tls);
if (esp_ret != ESP_OK) {
ESP_LOGE(TAG, "Failed to set server configurations");
ESP_LOGE(TAG, "Failed to set server configurations, [0x%04X] (%s)", esp_ret, esp_err_to_name(esp_ret));
goto exit;
}
#else
@ -159,7 +171,7 @@ static esp_err_t set_client_config(const char *hostname, size_t hostlen, esp_tls
tls->priv_ctx = (void *)wolfSSL_CTX_new(wolfTLSv1_2_client_method());
if (!tls->priv_ctx) {
ESP_LOGE(TAG, "Set wolfSSL ctx failed");
ESP_INT_EVENT_TRACKER_CAPTURE(tls->error_handle, ESP_TLS_ERR_TYPE_WOLFSSL, -ret);
ESP_INT_EVENT_TRACKER_CAPTURE(tls->error_handle, ESP_TLS_ERR_TYPE_WOLFSSL, ret);
return ESP_ERR_WOLFSSL_CTX_SETUP_FAILED;
}
@ -170,13 +182,17 @@ static esp_err_t set_client_config(const char *hostname, size_t hostlen, esp_tls
if (cfg->use_global_ca_store == true) {
if ((esp_load_wolfssl_verify_buffer(tls, global_cacert, global_cacert_pem_bytes, FILE_TYPE_CA_CERT, &ret)) != ESP_OK) {
ESP_LOGE(TAG, "Error in loading certificate verify buffer, returned %d", ret);
int err = wolfSSL_get_error( (WOLFSSL *)tls->priv_ssl, ret);
ESP_LOGE(TAG, "Error in loading certificate verify buffer, returned %d, error code: %d", ret, err);
wolfssl_print_error_msg(err);
return ESP_ERR_WOLFSSL_CERT_VERIFY_SETUP_FAILED;
}
wolfSSL_CTX_set_verify( (WOLFSSL_CTX *)tls->priv_ctx, WOLFSSL_VERIFY_PEER, NULL);
} else if (cfg->cacert_buf != NULL) {
if ((esp_load_wolfssl_verify_buffer(tls, cfg->cacert_buf, cfg->cacert_bytes, FILE_TYPE_CA_CERT, &ret)) != ESP_OK) {
ESP_LOGE(TAG, "Error in loading certificate verify buffer, returned %d", ret);
int err = wolfSSL_get_error( (WOLFSSL *)tls->priv_ssl, ret);
ESP_LOGE(TAG, "Error in loading certificate verify buffer, returned %d, error code: %d", ret, err);
wolfssl_print_error_msg(err);
return ESP_ERR_WOLFSSL_CERT_VERIFY_SETUP_FAILED;
}
wolfSSL_CTX_set_verify( (WOLFSSL_CTX *)tls->priv_ctx, WOLFSSL_VERIFY_PEER, NULL);
@ -222,11 +238,15 @@ static esp_err_t set_client_config(const char *hostname, size_t hostlen, esp_tls
if (cfg->clientcert_buf != NULL && cfg->clientkey_buf != NULL) {
if ((esp_load_wolfssl_verify_buffer(tls,cfg->clientcert_buf, cfg->clientcert_bytes, FILE_TYPE_SELF_CERT, &ret)) != ESP_OK) {
ESP_LOGE(TAG, "Error in loading certificate verify buffer, returned %d", ret);
int err = wolfSSL_get_error( (WOLFSSL *)tls->priv_ssl, ret);
ESP_LOGE(TAG, "Error in loading certificate verify buffer, returned %d, error code: %d", ret, err);
wolfssl_print_error_msg(err);
return ESP_ERR_WOLFSSL_CERT_VERIFY_SETUP_FAILED;
}
if ((esp_load_wolfssl_verify_buffer(tls,cfg->clientkey_buf, cfg->clientkey_bytes, FILE_TYPE_SELF_KEY, &ret)) != ESP_OK) {
ESP_LOGE(TAG, "Error in loading private key verify buffer, returned %d", ret);
int err = wolfSSL_get_error( (WOLFSSL *)tls->priv_ssl, ret);
ESP_LOGE(TAG, "Error in loading private key verify buffer, returned %d, error code: %d", ret, err);
wolfssl_print_error_msg(err);
return ESP_ERR_WOLFSSL_CERT_VERIFY_SETUP_FAILED;
}
} else if (cfg->clientcert_buf != NULL || cfg->clientkey_buf != NULL) {
@ -237,7 +257,8 @@ static esp_err_t set_client_config(const char *hostname, size_t hostlen, esp_tls
tls->priv_ssl =(void *)wolfSSL_new( (WOLFSSL_CTX *)tls->priv_ctx);
if (!tls->priv_ssl) {
ESP_LOGE(TAG, "Create wolfSSL failed");
ESP_INT_EVENT_TRACKER_CAPTURE(tls->error_handle, ESP_TLS_ERR_TYPE_WOLFSSL, -ret);
int err = wolfSSL_get_error( (WOLFSSL *)tls->priv_ssl, ret);
ESP_INT_EVENT_TRACKER_CAPTURE(tls->error_handle, ESP_TLS_ERR_TYPE_WOLFSSL, err);
return ESP_ERR_WOLFSSL_SSL_SETUP_FAILED;
}
@ -253,8 +274,9 @@ static esp_err_t set_client_config(const char *hostname, size_t hostlen, esp_tls
}
/* Hostname set here should match CN in server certificate */
if ((ret = (wolfSSL_check_domain_name( (WOLFSSL *)tls->priv_ssl, use_host))) != WOLFSSL_SUCCESS) {
ESP_LOGE(TAG, "wolfSSL_check_domain_name returned -0x%x", -ret);
ESP_INT_EVENT_TRACKER_CAPTURE(tls->error_handle, ESP_TLS_ERR_TYPE_WOLFSSL, -ret);
int err = wolfSSL_get_error( (WOLFSSL *)tls->priv_ssl, ret);
ESP_LOGE(TAG, "wolfSSL_check_domain_name returned %d, error code: %d", ret, err);
ESP_INT_EVENT_TRACKER_CAPTURE(tls->error_handle, ESP_TLS_ERR_TYPE_WOLFSSL, err);
free(use_host);
return ESP_ERR_WOLFSSL_SSL_SET_HOSTNAME_FAILED;
}
@ -267,8 +289,10 @@ static esp_err_t set_client_config(const char *hostname, size_t hostlen, esp_tls
for (; *alpn_list != NULL; alpn_list ++) {
ESP_LOGD(TAG, "alpn protocol is %s", *alpn_list);
if ((ret = wolfSSL_UseALPN( (WOLFSSL *)tls->priv_ssl, *alpn_list, strlen(*alpn_list), WOLFSSL_ALPN_FAILED_ON_MISMATCH)) != WOLFSSL_SUCCESS) {
ESP_INT_EVENT_TRACKER_CAPTURE(tls->error_handle, ESP_TLS_ERR_TYPE_WOLFSSL, -ret);
ESP_LOGE(TAG, "wolfSSL UseALPN failed, returned %d", ret);
int err = wolfSSL_get_error( (WOLFSSL *)tls->priv_ssl, ret);
ESP_INT_EVENT_TRACKER_CAPTURE(tls->error_handle, ESP_TLS_ERR_TYPE_WOLFSSL, err);
ESP_LOGE(TAG, "wolfSSL UseALPN failed, returned %d, error code: %d", ret, err);
wolfssl_print_error_msg(err);
return ESP_ERR_WOLFSSL_SSL_CONF_ALPN_PROTOCOLS_FAILED;
}
}
@ -294,7 +318,9 @@ static esp_err_t set_server_config(esp_tls_cfg_server_t *cfg, esp_tls_t *tls)
if (cfg->cacert_buf != NULL) {
if ((esp_load_wolfssl_verify_buffer(tls,cfg->cacert_buf, cfg->cacert_bytes, FILE_TYPE_CA_CERT, &ret)) != ESP_OK) {
ESP_LOGE(TAG, "Error in loading certificate verify buffer, returned %d", ret);
int err = wolfSSL_get_error( (WOLFSSL *)tls->priv_ssl, ret);
ESP_LOGE(TAG, "Error in loading certificate verify buffer, returned %d, error code: %d", ret, err);
wolfssl_print_error_msg(err);
return ESP_ERR_WOLFSSL_CERT_VERIFY_SETUP_FAILED;
}
wolfSSL_CTX_set_verify( (WOLFSSL_CTX *)tls->priv_ctx, WOLFSSL_VERIFY_PEER | WOLFSSL_VERIFY_FAIL_IF_NO_PEER_CERT, NULL);
@ -306,15 +332,19 @@ static esp_err_t set_server_config(esp_tls_cfg_server_t *cfg, esp_tls_t *tls)
if (cfg->servercert_buf != NULL && cfg->serverkey_buf != NULL) {
if ((esp_load_wolfssl_verify_buffer(tls,cfg->servercert_buf, cfg->servercert_bytes, FILE_TYPE_SELF_CERT, &ret)) != ESP_OK) {
ESP_LOGE(TAG, "Error in loading certificate verify buffer, returned %d", ret);
int err = wolfSSL_get_error( (WOLFSSL *)tls->priv_ssl, ret);
ESP_LOGE(TAG, "Error in loading certificate verify buffer, returned %d, error code: %d", ret, err);
wolfssl_print_error_msg(err);
return ESP_ERR_WOLFSSL_CERT_VERIFY_SETUP_FAILED;
}
if ((esp_load_wolfssl_verify_buffer(tls,cfg->serverkey_buf, cfg->serverkey_bytes, FILE_TYPE_SELF_KEY, &ret)) != ESP_OK) {
ESP_LOGE(TAG, "Error in loading private key verify buffer, returned %d", ret);
int err = wolfSSL_get_error( (WOLFSSL *)tls->priv_ssl, ret);
ESP_LOGE(TAG, "Error in loading private key verify buffer, returned %d, error code: %d", ret, err);
wolfssl_print_error_msg(err);
return ESP_ERR_WOLFSSL_CERT_VERIFY_SETUP_FAILED;
}
} else {
ESP_LOGE(TAG, "You have to provide both servercert_buf and serverkey_buf for https_server\n\n");
ESP_LOGE(TAG, "You have to provide both servercert_buf and serverkey_buf for https_server");
return ESP_FAIL;
}
@ -339,8 +369,9 @@ int esp_wolfssl_handshake(esp_tls_t *tls, const esp_tls_cfg_t *cfg)
} else {
int err = wolfSSL_get_error( (WOLFSSL *)tls->priv_ssl, ret);
if (err != WOLFSSL_ERROR_WANT_READ && err != WOLFSSL_ERROR_WANT_WRITE) {
ESP_LOGE(TAG, "wolfSSL_connect returned %d, error code: 0x%x", ret, err);
ESP_INT_EVENT_TRACKER_CAPTURE(tls->error_handle, ESP_TLS_ERR_TYPE_WOLFSSL, -err);
ESP_LOGE(TAG, "wolfSSL_connect returned %d, error code: %d", ret, err);
wolfssl_print_error_msg(err);
ESP_INT_EVENT_TRACKER_CAPTURE(tls->error_handle, ESP_TLS_ERR_TYPE_WOLFSSL, err);
ESP_INT_EVENT_TRACKER_CAPTURE(tls->error_handle, ESP_TLS_ERR_TYPE_ESP, ESP_ERR_WOLFSSL_SSL_HANDSHAKE_FAILED);
if (cfg->cacert_buf != NULL || cfg->use_global_ca_store == true) {
/* This is to check whether handshake failed due to invalid certificate*/
@ -359,15 +390,16 @@ ssize_t esp_wolfssl_read(esp_tls_t *tls, char *data, size_t datalen)
{
ssize_t ret = wolfSSL_read( (WOLFSSL *)tls->priv_ssl, (unsigned char *)data, datalen);
if (ret < 0) {
ret = wolfSSL_get_error( (WOLFSSL *)tls->priv_ssl, ret);
int err = wolfSSL_get_error( (WOLFSSL *)tls->priv_ssl, ret);
/* peer sent close notify */
if (ret == WOLFSSL_ERROR_ZERO_RETURN) {
if (err == WOLFSSL_ERROR_ZERO_RETURN) {
return 0;
}
if (ret != WOLFSSL_ERROR_WANT_READ && ret != WOLFSSL_ERROR_WANT_WRITE) {
ESP_INT_EVENT_TRACKER_CAPTURE(tls->error_handle, ESP_TLS_ERR_TYPE_WOLFSSL, -ret);
ESP_LOGE(TAG, "read error :%d:", ret);
wolfssl_print_error_msg(ret);
}
return esp_tls_convert_wolfssl_err_to_ssize(ret);
}
@ -378,12 +410,12 @@ ssize_t esp_wolfssl_write(esp_tls_t *tls, const char *data, size_t datalen)
{
ssize_t ret = wolfSSL_write( (WOLFSSL *)tls->priv_ssl, (unsigned char *) data, datalen);
if (ret < 0) {
ret = wolfSSL_get_error( (WOLFSSL *)tls->priv_ssl, ret);
if (ret != WOLFSSL_ERROR_WANT_READ && ret != WOLFSSL_ERROR_WANT_WRITE) {
ESP_INT_EVENT_TRACKER_CAPTURE(tls->error_handle, ESP_TLS_ERR_TYPE_WOLFSSL, -ret);
int err = wolfSSL_get_error( (WOLFSSL *)tls->priv_ssl, ret);
if (err != WOLFSSL_ERROR_WANT_READ && err != WOLFSSL_ERROR_WANT_WRITE) {
ESP_INT_EVENT_TRACKER_CAPTURE(tls->error_handle, ESP_TLS_ERR_TYPE_WOLFSSL, -err);
ESP_INT_EVENT_TRACKER_CAPTURE(tls->error_handle, ESP_TLS_ERR_TYPE_ESP, ESP_ERR_WOLFSSL_SSL_WRITE_FAILED);
ESP_LOGE(TAG, "write error :%d:", ret);
ESP_LOGE(TAG, "write error :%d:", err);
wolfssl_print_error_msg(err);
}
return esp_tls_convert_wolfssl_err_to_ssize(ret);
}
@ -394,7 +426,7 @@ void esp_wolfssl_verify_certificate(esp_tls_t *tls)
{
int flags;
if ((flags = wolfSSL_get_verify_result( (WOLFSSL *)tls->priv_ssl)) != X509_V_OK) {
ESP_LOGE(TAG, "Failed to verify peer certificate , returned %d!", flags);
ESP_LOGE(TAG, "Failed to verify peer certificate , returned %d", flags);
ESP_INT_EVENT_TRACKER_CAPTURE(tls->error_handle, ESP_TLS_ERR_TYPE_WOLFSSL_CERT_FLAGS, flags);
} else {
ESP_LOGI(TAG, "Certificate verified.");
@ -446,7 +478,7 @@ int esp_wolfssl_server_session_create(esp_tls_cfg_server_t *cfg, int sockfd, esp
tls->sockfd = sockfd;
esp_err_t esp_ret = esp_create_wolfssl_handle(NULL, 0, cfg, tls);
if (esp_ret != ESP_OK) {
ESP_LOGE(TAG, "create_ssl_handle failed");
ESP_LOGE(TAG, "create_ssl_handle failed, [0x%04X] (%s)", esp_ret, esp_err_to_name(esp_ret));
ESP_INT_EVENT_TRACKER_CAPTURE(tls->error_handle, ESP_TLS_ERR_TYPE_ESP, esp_ret);
tls->conn_state = ESP_TLS_FAIL;
return -1;
@ -455,10 +487,11 @@ int esp_wolfssl_server_session_create(esp_tls_cfg_server_t *cfg, int sockfd, esp
tls->write = esp_wolfssl_write;
int ret;
while ((ret = wolfSSL_accept((WOLFSSL *)tls->priv_ssl)) != WOLFSSL_SUCCESS) {
ret = wolfSSL_get_error((WOLFSSL *)tls->priv_ssl, ret);
if (ret != WOLFSSL_ERROR_WANT_READ && ret != WOLFSSL_ERROR_WANT_WRITE) {
ESP_INT_EVENT_TRACKER_CAPTURE(tls->error_handle, ESP_TLS_ERR_TYPE_WOLFSSL, -ret);
ESP_LOGE(TAG, "wolfSSL_handshake_server returned %d", ret);
int err = wolfSSL_get_error((WOLFSSL *)tls->priv_ssl, ret);
if (err != WOLFSSL_ERROR_WANT_READ && ret != WOLFSSL_ERROR_WANT_WRITE) {
ESP_INT_EVENT_TRACKER_CAPTURE(tls->error_handle, ESP_TLS_ERR_TYPE_WOLFSSL, err);
ESP_LOGE(TAG, "wolfSSL_accept returned %d, error code: %d", ret, err);
wolfssl_print_error_msg(err);
tls->conn_state = ESP_TLS_FAIL;
return -1;
}
@ -534,7 +567,9 @@ static esp_err_t esp_wolfssl_set_cipher_list(WOLFSSL_CTX *ctx)
ESP_LOGD(TAG, "cipher list is %s", defaultCipherList);
if ((ret = wolfSSL_CTX_set_cipher_list(ctx,defaultCipherList)) != WOLFSSL_SUCCESS) {
wolfSSL_CTX_free(ctx);
ESP_LOGE(TAG, "can't set cipher list, returned %02x", ret);
int err = wolfSSL_get_error( (WOLFSSL *)tls->priv_ssl, ret);
ESP_LOGE(TAG, "can't set cipher list, returned %d, error code: %d", ret, err);
wolfssl_print_error_msg(err);
return ESP_FAIL;
}
return ESP_OK;