Add a 'esp_https_server' component allowing to use http_server with OpenSSL

examples/protocols/https_server/main/main.c

@@ -0,0 +1,150 @@
+/* Simple HTTP + SSL Server Example
+
+   This example code is in the Public Domain (or CC0 licensed, at your option.)
+
+   Unless required by applicable law or agreed to in writing, this
+   software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
+   CONDITIONS OF ANY KIND, either express or implied.
+*/
+
+#include <esp_wifi.h>
+#include <esp_event_loop.h>
+#include <esp_log.h>
+#include <esp_system.h>
+#include <nvs_flash.h>
+#include <sys/param.h>
+
+#include <esp_https_server.h>
+
+/* A simple example that demonstrates how to create GET and POST
+ * handlers for the web server.
+ * The examples use simple WiFi configuration that you can set via
+ * 'make menuconfig'.
+ * If you'd rather not, just change the below entries to strings
+ * with the config you want -
+ * ie. #define EXAMPLE_WIFI_SSID "mywifissid"
+*/
+#define EXAMPLE_WIFI_SSID CONFIG_WIFI_SSID
+#define EXAMPLE_WIFI_PASS CONFIG_WIFI_PASSWORD
+
+static const char *TAG="APP";
+
+
+/* An HTTP GET handler */
+esp_err_t root_get_handler(httpd_req_t *req)
+{
+    httpd_resp_set_type(req, "text/html");
+    httpd_resp_send(req, "<h1>Hello Secure World!</h1>", -1); // -1 = use strlen()
+
+    return ESP_OK;
+}
+
+const httpd_uri_t root = {
+    .uri       = "/",
+    .method    = HTTP_GET,
+    .handler   = root_get_handler
+};
+
+
+httpd_handle_t start_webserver(void)
+{
+    httpd_handle_t server = NULL;
+
+    // Start the httpd server
+    ESP_LOGI(TAG, "Starting server");
+
+    httpd_ssl_config_t conf = HTTPD_SSL_CONFIG_DEFAULT();
+
+    extern const unsigned char cacert_pem_start[] asm("_binary_cacert_pem_start");
+    extern const unsigned char cacert_pem_end[]   asm("_binary_cacert_pem_end");
+    conf.cacert_pem = cacert_pem_start;
+    conf.cacert_len = cacert_pem_end - cacert_pem_start;
+
+    extern const unsigned char prvtkey_pem_start[] asm("_binary_prvtkey_pem_start");
+    extern const unsigned char prvtkey_pem_end[]   asm("_binary_prvtkey_pem_end");
+    conf.prvtkey_pem = prvtkey_pem_start;
+    conf.prvtkey_len = prvtkey_pem_end - prvtkey_pem_start;
+
+    esp_err_t ret = httpd_ssl_start(&server, &conf);
+    if (ESP_OK != ret) {
+        ESP_LOGI(TAG, "Error starting server!");
+        return NULL;
+    }
+
+    // Set URI handlers
+    ESP_LOGI(TAG, "Registering URI handlers");
+    httpd_register_uri_handler(server, &root);
+    return server;
+}
+
+void stop_webserver(httpd_handle_t server)
+{
+    // Stop the httpd server
+    httpd_ssl_stop(server);
+}
+
+
+
+
+// ------------------------- application boilerplate ------------------------
+
+static esp_err_t event_handler(void *ctx, system_event_t *event)
+{
+    httpd_handle_t *server = (httpd_handle_t *) ctx;
+
+    switch(event->event_id) {
+    case SYSTEM_EVENT_STA_START:
+        ESP_LOGI(TAG, "SYSTEM_EVENT_STA_START");
+        ESP_ERROR_CHECK(esp_wifi_connect());
+        break;
+    case SYSTEM_EVENT_STA_GOT_IP:
+        ESP_LOGI(TAG, "SYSTEM_EVENT_STA_GOT_IP");
+        ESP_LOGI(TAG, "Got IP: '%s'",
+                ip4addr_ntoa(&event->event_info.got_ip.ip_info.ip));
+
+        /* Start the web server */
+        if (*server == NULL) {
+            *server = start_webserver();
+        }
+        break;
+    case SYSTEM_EVENT_STA_DISCONNECTED:
+        ESP_LOGI(TAG, "SYSTEM_EVENT_STA_DISCONNECTED");
+        ESP_ERROR_CHECK(esp_wifi_connect());
+
+        /* Stop the web server */
+        if (*server) {
+            stop_webserver(*server);
+            *server = NULL;
+        }
+        break;
+    default:
+        break;
+    }
+    return ESP_OK;
+}
+
+static void initialise_wifi(void *arg)
+{
+    tcpip_adapter_init();
+    ESP_ERROR_CHECK(esp_event_loop_init(event_handler, arg));
+    wifi_init_config_t cfg = WIFI_INIT_CONFIG_DEFAULT();
+    ESP_ERROR_CHECK(esp_wifi_init(&cfg));
+    ESP_ERROR_CHECK(esp_wifi_set_storage(WIFI_STORAGE_RAM));
+    wifi_config_t wifi_config = {
+        .sta = {
+            .ssid = EXAMPLE_WIFI_SSID,
+            .password = EXAMPLE_WIFI_PASS,
+        },
+    };
+    ESP_LOGI(TAG, "Setting WiFi configuration SSID %s...", wifi_config.sta.ssid);
+    ESP_ERROR_CHECK(esp_wifi_set_mode(WIFI_MODE_STA));
+    ESP_ERROR_CHECK(esp_wifi_set_config(ESP_IF_WIFI_STA, &wifi_config));
+    ESP_ERROR_CHECK(esp_wifi_start());
+}
+
+void app_main()
+{
+    static httpd_handle_t server = NULL;
+    ESP_ERROR_CHECK(nvs_flash_init());
+    initialise_wifi(&server);
+}