feat(runtime): add integration hardening and diagnostics

components/maze32_web/maze32_web.c

@@ -82,6 +82,20 @@ static esp_err_t send_health(httpd_req_t* request) {
     return httpd_resp_send(request, response, length);
 }
 
+static esp_err_t send_diagnostics(httpd_req_t* request) {
+    maze32_gateway_t* gateway = request->user_ctx;
+    char response[1024];
+    size_t length = maze32_gateway_format_diagnostics(gateway, response, sizeof(response));
+    if (length == 0U) {
+        httpd_resp_send_err(request, HTTPD_500_INTERNAL_SERVER_ERROR,
+                            "Диагностика временно недоступна");
+        return ESP_FAIL;
+    }
+    httpd_resp_set_type(request, "application/json");
+    httpd_resp_set_hdr(request, "Cache-Control", "no-store");
+    return httpd_resp_send(request, response, (ssize_t)length);
+}
+
 esp_err_t maze32_web_start(httpd_handle_t* server, maze32_health_t* health,
                            maze32_gateway_t* gateway) {
     if (server == NULL || health == NULL || gateway == NULL) {
@@ -89,7 +103,7 @@ esp_err_t maze32_web_start(httpd_handle_t* server, maze32_health_t* health,
     }
 
     httpd_config_t configuration = HTTPD_DEFAULT_CONFIG();
-    configuration.max_uri_handlers = 12;
+    configuration.max_uri_handlers = 13;
     configuration.max_open_sockets = 9;
     configuration.lru_purge_enable = false;
     configuration.recv_wait_timeout = 5;
@@ -139,6 +153,12 @@ esp_err_t maze32_web_start(httpd_handle_t* server, maze32_health_t* health,
         .handler = send_health,
         .user_ctx = health,
     };
+    const httpd_uri_t diagnostics_uri = {
+        .uri = "/diagnostics",
+        .method = HTTP_GET,
+        .handler = send_diagnostics,
+        .user_ctx = gateway,
+    };
 
     result = httpd_register_uri_handler(*server, &root);
     if (result == ESP_OK) {
@@ -156,6 +176,9 @@ esp_err_t maze32_web_start(httpd_handle_t* server, maze32_health_t* health,
     if (result == ESP_OK) {
         result = httpd_register_uri_handler(*server, &health_uri);
     }
+    if (result == ESP_OK) {
+        result = httpd_register_uri_handler(*server, &diagnostics_uri);
+    }
     if (result != ESP_OK) {
         httpd_stop(*server);
         *server = NULL;