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/*
* SPDX-FileCopyrightText: 2015-2022 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <stdlib.h>
#include <string.h>
#include <esp_tls.h>
#include "sys/queue.h"
#include "esp_log.h"
#include "esp_transport_internal.h"
#include "esp_transport.h"
static const char *TAG = "transport";
/**
* This list will hold all transport available
*/
STAILQ_HEAD(esp_transport_list_t, esp_transport_item_t);
struct transport_esp_tls;
static esp_transport_handle_t esp_transport_get_default_parent(esp_transport_handle_t t)
{
/*
* By default, the underlying transport layer handle is the handle itself
*/
return t;
}
esp_transport_list_handle_t esp_transport_list_init(void)
{
esp_transport_list_handle_t transport_list = calloc(1, sizeof(struct esp_transport_list_t));
ESP_TRANSPORT_MEM_CHECK(TAG, transport_list, return NULL);
STAILQ_INIT(transport_list);
return transport_list;
}
esp_err_t esp_transport_list_add(esp_transport_list_handle_t h, esp_transport_handle_t t, const char *scheme)
{
if (h == NULL || t == NULL) {
return ESP_ERR_INVALID_ARG;
}
t->scheme = calloc(1, strlen(scheme) + 1);
ESP_TRANSPORT_MEM_CHECK(TAG, t->scheme, return ESP_ERR_NO_MEM);
strcpy(t->scheme, scheme);
STAILQ_INSERT_TAIL(h, t, next);
return ESP_OK;
}
esp_transport_handle_t esp_transport_list_get_transport(esp_transport_list_handle_t h, const char *scheme)
{
if (!h) {
return NULL;
}
if (scheme == NULL) {
return STAILQ_FIRST(h);
}
esp_transport_handle_t item;
STAILQ_FOREACH(item, h, next) {
if (strcasecmp(item->scheme, scheme) == 0) {
return item;
}
}
return NULL;
}
esp_err_t esp_transport_list_destroy(esp_transport_list_handle_t h)
{
esp_transport_list_clean(h);
free(h);
return ESP_OK;
}
esp_err_t esp_transport_list_clean(esp_transport_list_handle_t h)
{
esp_transport_handle_t item = STAILQ_FIRST(h);
esp_transport_handle_t tmp;
while (item != NULL) {
tmp = STAILQ_NEXT(item, next);
esp_transport_destroy(item);
item = tmp;
}
STAILQ_INIT(h);
return ESP_OK;
}
esp_transport_handle_t esp_transport_init(void)
{
esp_transport_handle_t transport = calloc(1, sizeof(struct esp_transport_item_t));
ESP_TRANSPORT_MEM_CHECK(TAG, transport, return NULL);
return transport;
}
esp_transport_handle_t esp_transport_get_payload_transport_handle(esp_transport_handle_t t)
{
if (t && t->_read) {
return t->_parent_transfer(t);
}
return NULL;
}
esp_err_t esp_transport_destroy(esp_transport_handle_t t)
{
if (t && t->_destroy) {
t->_destroy(t);
}
if (t && t->scheme) {
free(t->scheme);
}
free(t);
return ESP_OK;
}
int esp_transport_connect(esp_transport_handle_t t, const char *host, int port, int timeout_ms)
{
int ret = -1;
if (t && t->_connect) {
return t->_connect(t, host, port, timeout_ms);
}
return ret;
}
int esp_transport_connect_async(esp_transport_handle_t t, const char *host, int port, int timeout_ms)
{
int ret = -1;
if (t && t->_connect_async) {
return t->_connect_async(t, host, port, timeout_ms);
}
return ret;
}
int esp_transport_read(esp_transport_handle_t t, char *buffer, int len, int timeout_ms)
{
if (t && t->_read) {
return t->_read(t, buffer, len, timeout_ms);
}
return -1;
}
int esp_transport_write(esp_transport_handle_t t, const char *buffer, int len, int timeout_ms)
{
if (t && t->_write) {
return t->_write(t, buffer, len, timeout_ms);
}
return -1;
}
int esp_transport_poll_read(esp_transport_handle_t t, int timeout_ms)
{
if (t && t->_poll_read) {
return t->_poll_read(t, timeout_ms);
}
return -1;
}
int esp_transport_poll_write(esp_transport_handle_t t, int timeout_ms)
{
if (t && t->_poll_write) {
return t->_poll_write(t, timeout_ms);
}
return -1;
}
int esp_transport_close(esp_transport_handle_t t)
{
if (t && t->_close) {
return t->_close(t);
}
return 0;
}
void *esp_transport_get_context_data(esp_transport_handle_t t)
{
if (t) {
return t->data;
}
return NULL;
}
esp_err_t esp_transport_set_context_data(esp_transport_handle_t t, void *data)
{
if (t) {
t->data = data;
return ESP_OK;
}
return ESP_FAIL;
}
esp_err_t esp_transport_set_func(esp_transport_handle_t t,
connect_func _connect,
io_read_func _read,
io_func _write,
trans_func _close,
poll_func _poll_read,
poll_func _poll_write,
trans_func _destroy)
{
if (t == NULL) {
return ESP_FAIL;
}
t->_connect = _connect;
t->_read = _read;
t->_write = _write;
t->_close = _close;
t->_poll_read = _poll_read;
t->_poll_write = _poll_write;
t->_destroy = _destroy;
t->_connect_async = NULL;
t->_parent_transfer = esp_transport_get_default_parent;
return ESP_OK;
}
int esp_transport_get_default_port(esp_transport_handle_t t)
{
if (t == NULL) {
return -1;
}
return t->port;
}
esp_err_t esp_transport_set_default_port(esp_transport_handle_t t, int port)
{
if (t == NULL) {
return ESP_FAIL;
}
t->port = port;
return ESP_OK;
}
esp_err_t esp_transport_set_async_connect_func(esp_transport_handle_t t, connect_async_func _connect_async_func)
{
if (t == NULL) {
return ESP_FAIL;
}
t->_connect_async = _connect_async_func;
return ESP_OK;
}
esp_err_t esp_transport_set_parent_transport_func(esp_transport_handle_t t, payload_transfer_func _parent_transport)
{
if (t == NULL) {
return ESP_FAIL;
}
t->_parent_transfer = _parent_transport;
return ESP_OK;
}
esp_tls_error_handle_t esp_transport_get_error_handle(esp_transport_handle_t t)
{
if (t && t->foundation && t->foundation->error_handle) {
return &t->foundation->error_handle->esp_tls_err_h_base;
}
return NULL;
}
int esp_transport_get_errno(esp_transport_handle_t t)
{
if (t && t->foundation && t->foundation->error_handle) {
int actual_errno = t->foundation->error_handle->sock_errno;
t->foundation->error_handle->sock_errno = 0;
return actual_errno;
}
return -1;
}
void capture_tcp_transport_error(esp_transport_handle_t t, enum esp_tcp_transport_err_t error)
{
esp_tls_last_error_t *err_handle = esp_transport_get_error_handle(t);
if (err_handle == NULL) {
return;
}
switch (error) {
case ERR_TCP_TRANSPORT_CONNECTION_CLOSED_BY_FIN:
err_handle->last_error = ESP_ERR_ESP_TLS_TCP_CLOSED_FIN;
break;
case ERR_TCP_TRANSPORT_CONNECTION_TIMEOUT:
err_handle->last_error = ESP_ERR_ESP_TLS_CONNECTION_TIMEOUT;
break;
case ERR_TCP_TRANSPORT_CONNECTION_FAILED:
err_handle->last_error = ESP_ERR_ESP_TLS_FAILED_CONNECT_TO_HOST;
break;
case ERR_TCP_TRANSPORT_NO_MEM:
err_handle->last_error = ESP_ERR_NO_MEM;
break;
}
}
void esp_transport_set_errors(esp_transport_handle_t t, const esp_tls_error_handle_t error_handle)
{
if (t && t->foundation && t->foundation->error_handle) {
memcpy(&t->foundation->error_handle->esp_tls_err_h_base, error_handle, sizeof(esp_tls_last_error_t));
int sock_error;
if (esp_tls_get_and_clear_error_type(error_handle, ESP_TLS_ERR_TYPE_SYSTEM, &sock_error) == ESP_OK) {
t->foundation->error_handle->sock_errno = sock_error;
}
}
}
void esp_transport_capture_errno(esp_transport_handle_t t, int sock_errno)
{
if (t && t->foundation && t->foundation->error_handle) {
t->foundation->error_handle->sock_errno = sock_errno;
}
}
int esp_transport_get_socket(esp_transport_handle_t t)
{
if (t && t->_get_socket) {
return t->_get_socket(t);
}
return -1;
}
esp_err_t esp_transport_translate_error(enum esp_tcp_transport_err_t error)
{
esp_err_t err = ESP_FAIL;
switch (error) {
case ERR_TCP_TRANSPORT_CONNECTION_CLOSED_BY_FIN:
err = ESP_ERR_TCP_TRANSPORT_CONNECTION_CLOSED_BY_FIN;
break;
case ERR_TCP_TRANSPORT_CONNECTION_TIMEOUT:
err = ESP_ERR_TCP_TRANSPORT_CONNECTION_TIMEOUT;
break;
case ERR_TCP_TRANSPORT_CONNECTION_FAILED:
err = ESP_ERR_TCP_TRANSPORT_CONNECTION_FAILED;
break;
case ERR_TCP_TRANSPORT_NO_MEM:
err = ESP_ERR_TCP_TRANSPORT_NO_MEM;
break;
}
return err;
}
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