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components/esp_local_ctrl/src/esp_local_ctrl_transport_httpd.c
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/*
* SPDX-FileCopyrightText: 2019-2022 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <stdio.h>
#include <string.h>
#include <esp_err.h>
#include <esp_log.h>
#if defined __has_include
# if __has_include("mdns.h")
# define WITH_MDNS
# include "mdns.h"
# endif
#endif
#include <esp_netif.h>
#include <protocomm_httpd.h>
#include <esp_local_ctrl.h>
#ifdef CONFIG_ESP_HTTPS_SERVER_ENABLE
#include <esp_https_server.h>
#else
#include <esp_http_server.h>
#endif
#ifdef CONFIG_ESP_HTTPS_SERVER_ENABLE
#define esp_local_ctrl_httpd_start httpd_ssl_start
#define esp_local_ctrl_httpd_stop httpd_ssl_stop
#else
#define esp_local_ctrl_httpd_start httpd_start
#define esp_local_ctrl_httpd_stop httpd_stop
#endif
#include "esp_local_ctrl_priv.h"
#define LOCAL_CTRL_VERSION "v1.0"
static const char *TAG = "esp_local_ctrl_transport_httpd";
static httpd_handle_t server_handle = NULL;
static esp_err_t start_httpd_transport(protocomm_t *pc, const esp_local_ctrl_transport_config_t *config)
{
if (!config || !config->httpd) {
ESP_LOGE(TAG, "NULL configuration provided");
return ESP_ERR_INVALID_ARG;
}
esp_err_t err;
#ifdef WITH_MDNS
uint16_t port = 0;
#ifdef CONFIG_ESP_HTTPS_SERVER_ENABLE
/* Extract configured port */
port = (
config->httpd->transport_mode == HTTPD_SSL_TRANSPORT_SECURE ?
config->httpd->port_secure :
config->httpd->port_insecure
);
#else
port = config->httpd->server_port;
#endif
err = mdns_service_add("Local Control Service", "_esp_local_ctrl",
"_tcp", port, NULL, 0);
if (err != ESP_OK) {
/* mDNS is not mandatory for provisioning to work,
* so print warning and return without failure */
ESP_LOGW(TAG, "Error adding mDNS service! Check if mDNS is running");
} else {
/* Information to identify the roles of the various
* protocomm endpoint URIs provided by the service */
err |= mdns_service_txt_item_set("_esp_local_ctrl", "_tcp",
"version_endpoint", "/esp_local_ctrl/version");
err |= mdns_service_txt_item_set("_esp_local_ctrl", "_tcp",
"session_endpoint", "/esp_local_ctrl/session");
err |= mdns_service_txt_item_set("_esp_local_ctrl", "_tcp",
"control_endpoint", "/esp_local_ctrl/control");
if (err != ESP_OK) {
ESP_LOGE(TAG, "Error adding mDNS service text item");
}
}
#endif
err = esp_local_ctrl_httpd_start(&server_handle, config->httpd);
if (ESP_OK != err) {
ESP_LOGE(TAG, "Error starting HTTP/S service!");
#ifdef WITH_MDNS
mdns_service_remove("_esp_local_ctrl", "_tcp");
#endif
return err;
}
protocomm_httpd_config_t pc_conf = {
.ext_handle_provided = true,
.data = {
.handle = &server_handle
}
};
return protocomm_httpd_start(pc, &pc_conf);
}
static void stop_httpd_transport(protocomm_t *pc)
{
#ifdef WITH_MDNS
mdns_service_remove("_esp_local_ctrl", "_tcp");
#endif
protocomm_httpd_stop(pc);
if (esp_local_ctrl_httpd_stop(server_handle) == ESP_OK) {
server_handle = NULL;
}
}
static esp_err_t copy_httpd_config(esp_local_ctrl_transport_config_t *dest_config, const esp_local_ctrl_transport_config_t *src_config)
{
if (!dest_config || !src_config || !src_config->httpd) {
ESP_LOGE(TAG, "NULL configuration provided");
return ESP_ERR_INVALID_ARG;
}
dest_config->httpd = calloc(1, sizeof(esp_local_ctrl_transport_config_httpd_t));
if (!dest_config->httpd) {
ESP_LOGE(TAG, "Failed to allocate memory for HTTPD transport config");
return ESP_ERR_NO_MEM;
}
memcpy(dest_config->httpd,
src_config->httpd,
sizeof(esp_local_ctrl_transport_config_httpd_t));
return ESP_OK;
}
static void free_config(esp_local_ctrl_transport_config_t *config)
{
if (config && config->httpd) {
free(config->httpd);
config->httpd = NULL;
}
}
const esp_local_ctrl_transport_t *esp_local_ctrl_get_transport_httpd(void)
{
static const esp_local_ctrl_transport_t tp = {
.start_service = start_httpd_transport,
.stop_service = stop_httpd_transport,
.copy_config = copy_httpd_config,
.declare_ep = NULL,
.free_config = free_config
};
return &tp;
};
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