150 lines
4.2 KiB
C
150 lines
4.2 KiB
C
/* Simple HTTP + SSL Server Example
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This example code is in the Public Domain (or CC0 licensed, at your option.)
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Unless required by applicable law or agreed to in writing, this
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software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
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CONDITIONS OF ANY KIND, either express or implied.
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*/
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#include <esp_wifi.h>
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#include <esp_event_loop.h>
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#include <esp_log.h>
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#include <esp_system.h>
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#include <nvs_flash.h>
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#include <sys/param.h>
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#include <esp_https_server.h>
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/* A simple example that demonstrates how to create GET and POST
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* handlers for the web server.
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* The examples use simple WiFi configuration that you can set via
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* 'make menuconfig'.
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* If you'd rather not, just change the below entries to strings
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* with the config you want -
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* ie. #define EXAMPLE_WIFI_SSID "mywifissid"
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*/
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#define EXAMPLE_WIFI_SSID CONFIG_WIFI_SSID
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#define EXAMPLE_WIFI_PASS CONFIG_WIFI_PASSWORD
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static const char *TAG="APP";
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/* An HTTP GET handler */
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esp_err_t root_get_handler(httpd_req_t *req)
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{
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httpd_resp_set_type(req, "text/html");
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httpd_resp_send(req, "<h1>Hello Secure World!</h1>", -1); // -1 = use strlen()
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return ESP_OK;
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}
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const httpd_uri_t root = {
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.uri = "/",
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.method = HTTP_GET,
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.handler = root_get_handler
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};
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httpd_handle_t start_webserver(void)
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{
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httpd_handle_t server = NULL;
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// Start the httpd server
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ESP_LOGI(TAG, "Starting server");
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httpd_ssl_config_t conf = HTTPD_SSL_CONFIG_DEFAULT();
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extern const unsigned char cacert_pem_start[] asm("_binary_cacert_pem_start");
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extern const unsigned char cacert_pem_end[] asm("_binary_cacert_pem_end");
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conf.cacert_pem = cacert_pem_start;
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conf.cacert_len = cacert_pem_end - cacert_pem_start;
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extern const unsigned char prvtkey_pem_start[] asm("_binary_prvtkey_pem_start");
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extern const unsigned char prvtkey_pem_end[] asm("_binary_prvtkey_pem_end");
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conf.prvtkey_pem = prvtkey_pem_start;
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conf.prvtkey_len = prvtkey_pem_end - prvtkey_pem_start;
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esp_err_t ret = httpd_ssl_start(&server, &conf);
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if (ESP_OK != ret) {
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ESP_LOGI(TAG, "Error starting server!");
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return NULL;
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}
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// Set URI handlers
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ESP_LOGI(TAG, "Registering URI handlers");
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httpd_register_uri_handler(server, &root);
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return server;
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}
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void stop_webserver(httpd_handle_t server)
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{
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// Stop the httpd server
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httpd_ssl_stop(server);
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}
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// ------------------------- application boilerplate ------------------------
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static esp_err_t event_handler(void *ctx, system_event_t *event)
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{
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httpd_handle_t *server = (httpd_handle_t *) ctx;
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switch(event->event_id) {
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case SYSTEM_EVENT_STA_START:
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ESP_LOGI(TAG, "SYSTEM_EVENT_STA_START");
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ESP_ERROR_CHECK(esp_wifi_connect());
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break;
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case SYSTEM_EVENT_STA_GOT_IP:
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ESP_LOGI(TAG, "SYSTEM_EVENT_STA_GOT_IP");
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ESP_LOGI(TAG, "Got IP: '%s'",
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ip4addr_ntoa(&event->event_info.got_ip.ip_info.ip));
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/* Start the web server */
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if (*server == NULL) {
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*server = start_webserver();
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}
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break;
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case SYSTEM_EVENT_STA_DISCONNECTED:
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ESP_LOGI(TAG, "SYSTEM_EVENT_STA_DISCONNECTED");
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ESP_ERROR_CHECK(esp_wifi_connect());
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/* Stop the web server */
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if (*server) {
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stop_webserver(*server);
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*server = NULL;
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}
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break;
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default:
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break;
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}
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return ESP_OK;
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}
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static void initialise_wifi(void *arg)
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{
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tcpip_adapter_init();
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ESP_ERROR_CHECK(esp_event_loop_init(event_handler, arg));
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wifi_init_config_t cfg = WIFI_INIT_CONFIG_DEFAULT();
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ESP_ERROR_CHECK(esp_wifi_init(&cfg));
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ESP_ERROR_CHECK(esp_wifi_set_storage(WIFI_STORAGE_RAM));
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wifi_config_t wifi_config = {
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.sta = {
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.ssid = EXAMPLE_WIFI_SSID,
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.password = EXAMPLE_WIFI_PASS,
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},
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};
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ESP_LOGI(TAG, "Setting WiFi configuration SSID %s...", wifi_config.sta.ssid);
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ESP_ERROR_CHECK(esp_wifi_set_mode(WIFI_MODE_STA));
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ESP_ERROR_CHECK(esp_wifi_set_config(ESP_IF_WIFI_STA, &wifi_config));
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ESP_ERROR_CHECK(esp_wifi_start());
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}
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void app_main()
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{
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static httpd_handle_t server = NULL;
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ESP_ERROR_CHECK(nvs_flash_init());
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initialise_wifi(&server);
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}
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