/* WEBSERVER MODULE Copyright (C) 2016-2017 by Xose PĂ©rez */ #include #include #include #include #include #include #include #include #include #if EMBEDDED_WEB #include "config/data.h" #endif AsyncWebServer * _server; AsyncWebSocket ws("/ws"); Ticker deferred; typedef struct { IPAddress ip; unsigned long timestamp = 0; } ws_ticket_t; ws_ticket_t _ticket[WS_BUFFER_SIZE]; typedef struct { char * url; char * key; apiGetCallbackFunction getFn = NULL; apiPutCallbackFunction putFn = NULL; } web_api_t; std::vector _apis; char _last_modified[50]; // ----------------------------------------------------------------------------- // WEBSOCKETS // ----------------------------------------------------------------------------- bool wsSend(const char * payload) { if (ws.count() > 0) { DEBUG_MSG("[WEBSOCKET] Broadcasting '%s'\n", payload); ws.textAll(payload); } } bool wsSend(uint32_t client_id, const char * payload) { DEBUG_MSG("[WEBSOCKET] Sending '%s' to #%ld\n", payload, client_id); ws.text(client_id, payload); } void wsMQTTCallback(unsigned int type, const char * topic, const char * payload) { if (type == MQTT_CONNECT_EVENT) { wsSend("{\"mqttStatus\": true}"); } if (type == MQTT_DISCONNECT_EVENT) { wsSend("{\"mqttStatus\": false}"); } } void _wsParse(uint32_t client_id, uint8_t * payload, size_t length) { // Parse JSON input DynamicJsonBuffer jsonBuffer; JsonObject& root = jsonBuffer.parseObject((char *) payload); if (!root.success()) { DEBUG_MSG("[WEBSOCKET] Error parsing data\n"); ws.text(client_id, "{\"message\": \"Error parsing data!\"}"); return; } // Check actions if (root.containsKey("action")) { String action = root["action"]; DEBUG_MSG("[WEBSOCKET] Requested action: %s\n", action.c_str()); if (action.equals("reset")) { ESP.restart(); } if (action.equals("restore") && root.containsKey("data")) { JsonObject& data = root["data"]; if (!data.containsKey("app") || (data["app"] != APP_NAME)) { ws.text(client_id, "{\"message\": \"The file does not look like a valid configuration backup.\"}"); return; } for (unsigned int i = EEPROM_DATA_END; i < SPI_FLASH_SEC_SIZE; i++) { EEPROM.write(i, 0xFF); } for (auto element : data) { if (strcmp(element.key, "app") == 0) continue; if (strcmp(element.key, "version") == 0) continue; setSetting(element.key, element.value.as()); } saveSettings(); ws.text(client_id, "{\"message\": \"Changes saved. You should reboot your board now.\"}"); } if (action.equals("reconnect")) { // Let the HTTP request return and disconnect after 100ms deferred.once_ms(100, wifiDisconnect); } if (action.equals("relay") && root.containsKey("data")) { JsonObject& data = root["data"]; if (data.containsKey("status")) { bool state = (strcmp(data["status"], "1") == 0); unsigned int relayID = 0; if (data.containsKey("id")) { String value = data["id"]; relayID = value.toInt(); } relayStatus(relayID, state); } } #if LIGHT_PROVIDER != LIGHT_PROVIDER_NONE if (action.equals("color") && root.containsKey("data")) { lightColor(root["data"], true, true); } #endif }; // Check config if (root.containsKey("config") && root["config"].is()) { JsonArray& config = root["config"]; DEBUG_MSG("[WEBSOCKET] Parsing configuration data\n"); unsigned char webMode = WEB_MODE_NORMAL; bool save = false; bool changed = false; bool changedMQTT = false; bool apiEnabled = false; #if ENABLE_FAUXMO bool fauxmoEnabled = false; #endif unsigned int network = 0; unsigned int dczRelayIdx = 0; String adminPass; for (unsigned int i=0; i= relayCount()) continue; key = key + String(dczRelayIdx); ++dczRelayIdx; } #else if (key.startsWith("dcz")) continue; #endif // Web portions if (key == "webPort") { if ((value.toInt() == 0) || (value.toInt() == 80)) { save = changed = true; delSetting(key); continue; } } if (key == "webMode") { webMode = value.toInt(); continue; } // Check password if (key == "adminPass1") { adminPass = value; continue; } if (key == "adminPass2") { if (!value.equals(adminPass)) { ws.text(client_id, "{\"message\": \"Passwords do not match!\"}"); return; } if (value.length() == 0) continue; ws.text(client_id, "{\"action\": \"reload\"}"); key = String("adminPass"); } // Checkboxes if (key == "apiEnabled") { apiEnabled = true; continue; } #if ENABLE_FAUXMO if (key == "fauxmoEnabled") { fauxmoEnabled = true; continue; } #endif if (key == "ssid") { key = key + String(network); } if (key == "pass") { key = key + String(network); } if (key == "ip") { key = key + String(network); } if (key == "gw") { key = key + String(network); } if (key == "mask") { key = key + String(network); } if (key == "dns") { key = key + String(network); ++network; } if (value != getSetting(key)) { //DEBUG_MSG("[WEBSOCKET] Storing %s = %s\n", key.c_str(), value.c_str()); setSetting(key, value); save = changed = true; if (key.startsWith("mqtt")) changedMQTT = true; } } if (webMode == WEB_MODE_NORMAL) { // Checkboxes if (apiEnabled != (getSetting("apiEnabled").toInt() == 1)) { setSetting("apiEnabled", apiEnabled); save = changed = true; } #if ENABLE_FAUXMO if (fauxmoEnabled != (getSetting("fauxmoEnabled").toInt() == 1)) { setSetting("fauxmoEnabled", fauxmoEnabled); save = changed = true; } #endif // Clean wifi networks int i = 0; while (i < network) { if (getSetting("ssid" + String(i)).length() == 0) { delSetting("ssid" + String(i)); break; } if (getSetting("pass" + String(i)).length() == 0) delSetting("pass" + String(i)); if (getSetting("ip" + String(i)).length() == 0) delSetting("ip" + String(i)); if (getSetting("gw" + String(i)).length() == 0) delSetting("gw" + String(i)); if (getSetting("mask" + String(i)).length() == 0) delSetting("mask" + String(i)); if (getSetting("dns" + String(i)).length() == 0) delSetting("dns" + String(i)); ++i; } while (i < WIFI_MAX_NETWORKS) { if (getSetting("ssid" + String(i)).length() > 0) { save = changed = true; } delSetting("ssid" + String(i)); delSetting("pass" + String(i)); delSetting("ip" + String(i)); delSetting("gw" + String(i)); delSetting("mask" + String(i)); delSetting("dns" + String(i)); ++i; } } // Save settings if (save) { saveSettings(); wifiConfigure(); otaConfigure(); #if ENABLE_FAUXMO fauxmoConfigure(); #endif buildTopics(); #if ENABLE_RF rfBuildCodes(); #endif #if ENABLE_EMON setCurrentRatio(getSetting("emonRatio").toFloat()); #endif // Check if we should reconfigure MQTT connection if (changedMQTT) { mqttDisconnect(); } } if (changed) { ws.text(client_id, "{\"message\": \"Changes saved\"}"); } else { ws.text(client_id, "{\"message\": \"No changes detected\"}"); } } } void _wsStart(uint32_t client_id) { char chipid[6]; sprintf(chipid, "%06X", ESP.getChipId()); DynamicJsonBuffer jsonBuffer; JsonObject& root = jsonBuffer.createObject(); bool changePassword = false; #if FORCE_CHANGE_PASS == 1 String adminPass = getSetting("adminPass", ADMIN_PASS); if (adminPass.equals(ADMIN_PASS)) changePassword = true; #endif if (changePassword) { root["webMode"] = WEB_MODE_PASSWORD; } else { root["webMode"] = WEB_MODE_NORMAL; root["app"] = APP_NAME; root["version"] = APP_VERSION; root["buildDate"] = __DATE__; root["buildTime"] = __TIME__; root["manufacturer"] = String(MANUFACTURER); root["chipid"] = chipid; root["mac"] = WiFi.macAddress(); root["device"] = String(DEVICE); root["hostname"] = getSetting("hostname", HOSTNAME); root["network"] = getNetwork(); root["deviceip"] = getIP(); root["mqttStatus"] = mqttConnected(); root["mqttServer"] = getSetting("mqttServer", MQTT_SERVER); root["mqttPort"] = getSetting("mqttPort", MQTT_PORT); root["mqttUser"] = getSetting("mqttUser"); root["mqttPassword"] = getSetting("mqttPassword"); root["mqttTopic"] = getSetting("mqttTopic", MQTT_TOPIC); JsonArray& relay = root.createNestedArray("relayStatus"); for (unsigned char relayID=0; relayID 1) { root["multirelayVisible"] = 1; root["relaySync"] = getSetting("relaySync", RELAY_SYNC); } root["webPort"] = getSetting("webPort", WEBSERVER_PORT).toInt(); root["apiEnabled"] = getSetting("apiEnabled").toInt() == 1; root["apiKey"] = getSetting("apiKey"); root["tmpUnits"] = getSetting("tmpUnits", TMP_UNITS).toInt(); #if ENABLE_DOMOTICZ root["dczVisible"] = 1; root["dczTopicIn"] = getSetting("dczTopicIn", DOMOTICZ_IN_TOPIC); root["dczTopicOut"] = getSetting("dczTopicOut", DOMOTICZ_OUT_TOPIC); JsonArray& dczRelayIdx = root.createNestedArray("dczRelayIdx"); for (byte i=0; iremoteIP(); unsigned long now = millis(); unsigned short index = 0; for (index = 0; index < WS_BUFFER_SIZE; index++) { if ((_ticket[index].ip == ip) && (now - _ticket[index].timestamp < WS_TIMEOUT)) break; } if (index == WS_BUFFER_SIZE) { DEBUG_MSG("[WEBSOCKET] Validation check failed\n"); ws.text(client->id(), "{\"message\": \"Session expired, please reload page...\"}"); return false; } return true; } void _wsEvent(AsyncWebSocket * server, AsyncWebSocketClient * client, AwsEventType type, void * arg, uint8_t *data, size_t len){ static uint8_t * message; // Authorize #ifndef NOWSAUTH if (!_wsAuth(client)) return; #endif if (type == WS_EVT_CONNECT) { IPAddress ip = client->remoteIP(); DEBUG_MSG("[WEBSOCKET] #%u connected, ip: %d.%d.%d.%d, url: %s\n", client->id(), ip[0], ip[1], ip[2], ip[3], server->url()); _wsStart(client->id()); } else if(type == WS_EVT_DISCONNECT) { DEBUG_MSG("[WEBSOCKET] #%u disconnected\n", client->id()); } else if(type == WS_EVT_ERROR) { DEBUG_MSG("[WEBSOCKET] #%u error(%u): %s\n", client->id(), *((uint16_t*)arg), (char*)data); } else if(type == WS_EVT_PONG) { DEBUG_MSG("[WEBSOCKET] #%u pong(%u): %s\n", client->id(), len, len ? (char*) data : ""); } else if(type == WS_EVT_DATA) { AwsFrameInfo * info = (AwsFrameInfo*)arg; // First packet if (info->index == 0) { message = (uint8_t*) malloc(info->len); } // Store data memcpy(message + info->index, data, len); // Last packet if (info->index + len == info->len) { _wsParse(client->id(), message, info->len); free(message); } } } // ----------------------------------------------------------------------------- // WEBSERVER // ----------------------------------------------------------------------------- void webLogRequest(AsyncWebServerRequest *request) { DEBUG_MSG("[WEBSERVER] Request: %s %s\n", request->methodToString(), request->url().c_str()); } bool _authenticate(AsyncWebServerRequest *request) { String password = getSetting("adminPass", ADMIN_PASS); char httpPassword[password.length() + 1]; password.toCharArray(httpPassword, password.length() + 1); return request->authenticate(HTTP_USERNAME, httpPassword); } bool _authAPI(AsyncWebServerRequest *request) { if (getSetting("apiEnabled").toInt() == 0) { DEBUG_MSG("[WEBSERVER] HTTP API is not enabled\n"); request->send(403); return false; } if (!request->hasParam("apikey", (request->method() == HTTP_PUT))) { DEBUG_MSG("[WEBSERVER] Missing apikey parameter\n"); request->send(403); return false; } AsyncWebParameter* p = request->getParam("apikey", (request->method() == HTTP_PUT)); if (!p->value().equals(getSetting("apiKey"))) { DEBUG_MSG("[WEBSERVER] Wrong apikey parameter\n"); request->send(403); return false; } return true; } bool _asJson(AsyncWebServerRequest *request) { bool asJson = false; if (request->hasHeader("Accept")) { AsyncWebHeader* h = request->getHeader("Accept"); asJson = h->value().equals("application/json"); } return asJson; } ArRequestHandlerFunction _bindAPI(unsigned int apiID) { return [apiID](AsyncWebServerRequest *request) { webLogRequest(request); if (!_authAPI(request)) return; bool asJson = _asJson(request); web_api_t api = _apis[apiID]; if (api.putFn != NULL) { if (request->hasParam("value", request->method() == HTTP_PUT)) { AsyncWebParameter* p = request->getParam("value", request->method() == HTTP_PUT); (api.putFn)((p->value()).c_str()); } } char value[10]; (api.getFn)(value, 10); // jump over leading spaces char *p = value; while ((unsigned char) *p == ' ') ++p; if (asJson) { char buffer[64]; sprintf_P(buffer, PSTR("{ \"%s\": %s }"), api.key, p); request->send(200, "application/json", buffer); } else { request->send(200, "text/plain", p); } }; } void apiRegister(const char * url, const char * key, apiGetCallbackFunction getFn, apiPutCallbackFunction putFn) { // Store it web_api_t api; api.url = strdup(url); api.key = strdup(key); api.getFn = getFn; api.putFn = putFn; _apis.push_back(api); // Bind call unsigned int methods = HTTP_GET; if (putFn != NULL) methods += HTTP_PUT; _server->on(url, methods, _bindAPI(_apis.size() - 1)); } void _onAPIs(AsyncWebServerRequest *request) { webLogRequest(request); if (!_authAPI(request)) return; bool asJson = _asJson(request); String output; if (asJson) { DynamicJsonBuffer jsonBuffer; JsonObject& root = jsonBuffer.createObject(); for (unsigned int i=0; i < _apis.size(); i++) { root[_apis[i].key] = _apis[i].url; } root.printTo(output); request->send(200, "application/json", output); } else { for (unsigned int i=0; i < _apis.size(); i++) { output += _apis[i].key + String(" -> ") + _apis[i].url + String("\n
"); } request->send(200, "text/plain", output); } } void _onRPC(AsyncWebServerRequest *request) { webLogRequest(request); if (!_authAPI(request)) return; //bool asJson = _asJson(request); int response = 404; if (request->hasParam("action")) { AsyncWebParameter* p = request->getParam("action"); String action = p->value(); DEBUG_MSG("[RPC] Action: %s\n", action.c_str()); if (action.equals("reset")) { response = 200; deferred.once_ms(100, []() { ESP.restart(); }); } } request->send(response); } void _onAuth(AsyncWebServerRequest *request) { webLogRequest(request); if (!_authenticate(request)) return request->requestAuthentication(); IPAddress ip = request->client()->remoteIP(); unsigned long now = millis(); unsigned short index; for (index = 0; index < WS_BUFFER_SIZE; index++) { if (_ticket[index].ip == ip) break; if (_ticket[index].timestamp == 0) break; if (now - _ticket[index].timestamp > WS_TIMEOUT) break; } if (index == WS_BUFFER_SIZE) { request->send(429); } else { _ticket[index].ip = ip; _ticket[index].timestamp = now; request->send(204); } } void _onGetConfig(AsyncWebServerRequest *request) { webLogRequest(request); if (!_authenticate(request)) return request->requestAuthentication(); AsyncJsonResponse * response = new AsyncJsonResponse(); JsonObject& root = response->getRoot(); root["app"] = APP_NAME; root["version"] = APP_VERSION; unsigned int size = settingsKeyCount(); for (unsigned int i=0; iaddHeader("Content-Disposition", buffer); response->setLength(); request->send(response); } #if EMBEDDED_WEB void _onHome(AsyncWebServerRequest *request) { webLogRequest(request); if (request->header("If-Modified-Since").equals(_last_modified)) { request->send(304); } else { AsyncWebServerResponse *response = request->beginResponse_P(200, "text/html", index_html_gz, index_html_gz_len); response->addHeader("Content-Encoding", "gzip"); response->addHeader("Last-Modified", _last_modified); request->send(response); } } #endif void webSetup() { // Create server _server = new AsyncWebServer(getSetting("webPort", WEBSERVER_PORT).toInt()); // Setup websocket ws.onEvent(_wsEvent); mqttRegister(wsMQTTCallback); // Cache the Last-Modifier header value sprintf(_last_modified, "%s %s GMT", __DATE__, __TIME__); // Setup webserver _server->addHandler(&ws); // Rewrites _server->rewrite("/", "/index.html"); // Serve home (basic authentication protection) #if EMBEDDED_WEB _server->on("/index.html", HTTP_GET, _onHome); #endif _server->on("/config", HTTP_GET, _onGetConfig); _server->on("/auth", HTTP_GET, _onAuth); _server->on("/apis", HTTP_GET, _onAPIs); _server->on("/rpc", HTTP_GET, _onRPC); // Serve static files #if not EMBEDDED_WEB _server->serveStatic("/", SPIFFS, "/") .setLastModified(_last_modified) .setFilter([](AsyncWebServerRequest *request) -> bool { webLogRequest(request); return true; }); #endif // 404 _server->onNotFound([](AsyncWebServerRequest *request){ request->send(404); }); // Run server _server->begin(); DEBUG_MSG("[WEBSERVER] Webserver running on port %d\n", getSetting("webPort", WEBSERVER_PORT).toInt()); }