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546 lines
15 KiB
546 lines
15 KiB
/*
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ESPurna
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WEBSERVER MODULE
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Copyright (C) 2016 by Xose Pérez <xose dot perez at gmail dot com>
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*/
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#include <ESPAsyncTCP.h>
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#include <ESPAsyncWebServer.h>
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#include <ESP8266mDNS.h>
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#include <FS.h>
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#include <Hash.h>
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#include <AsyncJson.h>
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#include <ArduinoJson.h>
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AsyncWebServer server(80);
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AsyncWebSocket ws("/ws");
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typedef struct {
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IPAddress ip;
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unsigned long timestamp = 0;
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} ws_ticket_t;
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ws_ticket_t _ticket[WS_BUFFER_SIZE];
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// -----------------------------------------------------------------------------
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// WEBSOCKETS
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// -----------------------------------------------------------------------------
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bool wsSend(char * payload) {
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//DEBUG_MSG("[WEBSOCKET] Broadcasting '%s'\n", payload);
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ws.textAll(payload);
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}
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bool wsSend(uint32_t client_id, char * payload) {
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//DEBUG_MSG("[WEBSOCKET] Sending '%s' to #%ld\n", payload, client_id);
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ws.text(client_id, payload);
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}
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void wsMQTTCallback(unsigned int type, const char * topic, const char * payload) {
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if (type == MQTT_CONNECT_EVENT) {
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wsSend((char *) "{\"mqttStatus\": true}");
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}
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if (type == MQTT_DISCONNECT_EVENT) {
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wsSend((char *) "{\"mqttStatus\": false}");
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}
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}
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void _wsParse(uint32_t client_id, uint8_t * payload, size_t length) {
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// Parse JSON input
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DynamicJsonBuffer jsonBuffer;
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JsonObject& root = jsonBuffer.parseObject((char *) payload);
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if (!root.success()) {
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DEBUG_MSG("[WEBSOCKET] Error parsing data\n");
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ws.text(client_id, "{\"message\": \"Error parsing data!\"}");
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return;
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}
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// Check actions
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if (root.containsKey("action")) {
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String action = root["action"];
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unsigned int relayID = 0;
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if (root.containsKey("relayID")) {
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String value = root["relayID"];
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relayID = value.toInt();
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}
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DEBUG_MSG("[WEBSOCKET] Requested action: %s\n", action.c_str());
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if (action.equals("reset")) ESP.reset();
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if (action.equals("reconnect")) wifiDisconnect();
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if (action.equals("on")) relayStatus(relayID, true);
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if (action.equals("off")) relayStatus(relayID, false);
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};
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// Check config
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if (root.containsKey("config") && root["config"].is<JsonArray&>()) {
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JsonArray& config = root["config"];
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DEBUG_MSG("[WEBSOCKET] Parsing configuration data\n");
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bool dirty = false;
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bool dirtyMQTT = false;
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bool apiEnabled = false;
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#if ENABLE_FAUXMO
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bool fauxmoEnabled = false;
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#endif
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unsigned int network = 0;
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unsigned int dczIdx = 0;
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String adminPass;
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for (unsigned int i=0; i<config.size(); i++) {
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String key = config[i]["name"];
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String value = config[i]["value"];
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#if ENABLE_POW
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if (key == "powExpectedPower") {
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powSetExpectedActivePower(value.toInt());
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continue;
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}
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#else
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if (key.startsWith("pow")) continue;
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#endif
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#if ENABLE_DOMOTICZ
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if (key == "dczIdx") {
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if (dczIdx >= relayCount()) continue;
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key = key + String(dczIdx);
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++dczIdx;
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}
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#else
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if (key.startsWith("dcz")) continue;
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#endif
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// Check password
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if (key == "adminPass1") {
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adminPass = value;
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continue;
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}
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if (key == "adminPass2") {
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if (!value.equals(adminPass)) {
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ws.text(client_id, "{\"message\": \"Passwords do not match!\"}");
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return;
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}
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if (value.length() == 0) continue;
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ws.text(client_id, "{\"action\": \"reload\"}");
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key = String("adminPass");
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}
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// Checkboxes
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if (key == "apiEnabled") {
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apiEnabled = true;
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continue;
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}
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#if ENABLE_FAUXMO
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if (key == "fauxmoEnabled") {
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fauxmoEnabled = true;
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continue;
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}
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#endif
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if (key == "ssid") {
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key = key + String(network);
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}
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if (key == "pass") {
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key = key + String(network);
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++network;
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}
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if (value != getSetting(key)) {
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setSetting(key, value);
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dirty = true;
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if (key.startsWith("mqtt")) dirtyMQTT = true;
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}
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}
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// Checkboxes
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if (apiEnabled != (getSetting("apiEnabled").toInt() == 1)) {
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setSetting("apiEnabled", apiEnabled);
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dirty = true;
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}
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#if ENABLE_FAUXMO
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if (fauxmoEnabled != (getSetting("fauxmoEnabled").toInt() == 1)) {
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setSetting("fauxmoEnabled", fauxmoEnabled);
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dirty = true;
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}
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#endif
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// Save settings
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if (dirty) {
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saveSettings();
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wifiConfigure();
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otaConfigure();
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#if ENABLE_FAUXMO
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fauxmoConfigure();
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#endif
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buildTopics();
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#if ENABLE_RF
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rfBuildCodes();
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#endif
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#if ENABLE_EMON
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setCurrentRatio(getSetting("emonRatio").toFloat());
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#endif
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// Check if we should reconfigure MQTT connection
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if (dirtyMQTT) {
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mqttDisconnect();
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}
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ws.text(client_id, "{\"message\": \"Changes saved\"}");
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} else {
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ws.text(client_id, "{\"message\": \"No changes detected\"}");
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}
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}
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}
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void _wsStart(uint32_t client_id) {
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char chipid[6];
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sprintf(chipid, "%06X", ESP.getChipId());
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DynamicJsonBuffer jsonBuffer;
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JsonObject& root = jsonBuffer.createObject();
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root["app"] = APP_NAME;
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root["version"] = APP_VERSION;
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root["buildDate"] = __DATE__;
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root["buildTime"] = __TIME__;
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root["manufacturer"] = String(MANUFACTURER);
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root["chipid"] = chipid;
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root["mac"] = WiFi.macAddress();
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root["device"] = String(DEVICE);
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root["hostname"] = getSetting("hostname", HOSTNAME);
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root["network"] = getNetwork();
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root["ip"] = getIP();
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root["mqttStatus"] = mqttConnected();
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root["mqttServer"] = getSetting("mqttServer", MQTT_SERVER);
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root["mqttPort"] = getSetting("mqttPort", MQTT_PORT);
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root["mqttUser"] = getSetting("mqttUser");
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root["mqttPassword"] = getSetting("mqttPassword");
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root["mqttTopic"] = getSetting("mqttTopic", MQTT_TOPIC);
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JsonArray& relay = root.createNestedArray("relayStatus");
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for (unsigned char relayID=0; relayID<relayCount(); relayID++) {
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relay.add(relayStatus(relayID));
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}
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root["relayMode"] = getSetting("relayMode", RELAY_MODE);
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if (relayCount() > 1) {
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root["multirelayVisible"] = 1;
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root["relaySync"] = getSetting("relaySync", RELAY_SYNC);
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}
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root["apiEnabled"] = getSetting("apiEnabled").toInt() == 1;
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root["apiKey"] = getSetting("apiKey");
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#if ENABLE_DOMOTICZ
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root["dczVisible"] = 1;
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root["dczTopicIn"] = getSetting("dczTopicIn", DOMOTICZ_IN_TOPIC);
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root["dczTopicOut"] = getSetting("dczTopicOut", DOMOTICZ_OUT_TOPIC);
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JsonArray& dczIdx = root.createNestedArray("dczIdx");
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for (byte i=0; i<relayCount(); i++) {
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dczIdx.add(domoticzIdx(i));
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}
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#endif
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#if ENABLE_FAUXMO
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root["fauxmoVisible"] = 1;
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root["fauxmoEnabled"] = getSetting("fauxmoEnabled", FAUXMO_ENABLED).toInt() == 1;
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#endif
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#if ENABLE_DS18B20
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root["dsVisible"] = 1;
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root["dsTmp"] = getDSTemperature();
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#endif
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#if ENABLE_DHT
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root["dhtVisible"] = 1;
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root["dhtTmp"] = getDHTTemperature();
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root["dhtHum"] = getDHTHumidity();
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#endif
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#if ENABLE_RF
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root["rfVisible"] = 1;
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root["rfChannel"] = getSetting("rfChannel", RF_CHANNEL);
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root["rfDevice"] = getSetting("rfDevice", RF_DEVICE);
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#endif
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#if ENABLE_EMON
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root["emonVisible"] = 1;
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root["emonPower"] = getPower();
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root["emonMains"] = getSetting("emonMains", EMON_MAINS_VOLTAGE);
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root["emonRatio"] = getSetting("emonRatio", EMON_CURRENT_RATIO);
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#endif
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#if ENABLE_POW
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root["powVisible"] = 1;
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root["powActivePower"] = getActivePower();
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#endif
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JsonArray& wifi = root.createNestedArray("wifi");
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for (byte i=0; i<3; i++) {
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JsonObject& network = wifi.createNestedObject();
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network["ssid"] = getSetting("ssid" + String(i));
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network["pass"] = getSetting("pass" + String(i));
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}
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String output;
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root.printTo(output);
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ws.text(client_id, (char *) output.c_str());
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}
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bool _wsAuth(AsyncWebSocketClient * client) {
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IPAddress ip = client->remoteIP();
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unsigned long now = millis();
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unsigned short index = 0;
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for (index = 0; index < WS_BUFFER_SIZE; index++) {
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if ((_ticket[index].ip == ip) && (now - _ticket[index].timestamp < WS_TIMEOUT)) break;
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}
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if (index == WS_BUFFER_SIZE) {
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DEBUG_MSG("[WEBSOCKET] Validation check failed\n");
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ws.text(client->id(), "{\"message\": \"Session expired, please reload page...\"}");
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return false;
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}
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return true;
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}
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void _wsEvent(AsyncWebSocket * server, AsyncWebSocketClient * client, AwsEventType type, void * arg, uint8_t *data, size_t len){
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// Authorize
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#ifndef NOWSAUTH
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if (!_wsAuth(client)) return;
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#endif
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if (type == WS_EVT_CONNECT) {
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IPAddress ip = client->remoteIP();
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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());
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_wsStart(client->id());
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} else if(type == WS_EVT_DISCONNECT) {
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DEBUG_MSG("[WEBSOCKET] #%u disconnected\n", client->id());
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} else if(type == WS_EVT_ERROR) {
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DEBUG_MSG("[WEBSOCKET] #%u error(%u): %s\n", client->id(), *((uint16_t*)arg), (char*)data);
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} else if(type == WS_EVT_PONG) {
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DEBUG_MSG("[WEBSOCKET] #%u pong(%u): %s\n", client->id(), len, len ? (char*) data : "");
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} else if(type == WS_EVT_DATA) {
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_wsParse(client->id(), data, len);
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}
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}
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// -----------------------------------------------------------------------------
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// WEBSERVER
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// -----------------------------------------------------------------------------
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void _logRequest(AsyncWebServerRequest *request) {
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DEBUG_MSG("[WEBSERVER] Request: %s %s\n", request->methodToString(), request->url().c_str());
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}
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bool _authenticate(AsyncWebServerRequest *request) {
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String password = getSetting("adminPass", ADMIN_PASS);
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char httpPassword[password.length() + 1];
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password.toCharArray(httpPassword, password.length() + 1);
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return request->authenticate(HTTP_USERNAME, httpPassword);
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}
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void _onAuth(AsyncWebServerRequest *request) {
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_logRequest(request);
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if (!_authenticate(request)) return request->requestAuthentication();
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IPAddress ip = request->client()->remoteIP();
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unsigned long now = millis();
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unsigned short index;
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for (index = 0; index < WS_BUFFER_SIZE; index++) {
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if (_ticket[index].ip == ip) break;
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if (_ticket[index].timestamp == 0) break;
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if (now - _ticket[index].timestamp > WS_TIMEOUT) break;
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}
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if (index == WS_BUFFER_SIZE) {
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request->send(423);
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} else {
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_ticket[index].ip = ip;
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_ticket[index].timestamp = now;
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request->send(204);
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}
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}
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void _onHome(AsyncWebServerRequest *request) {
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_logRequest(request);
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if (!_authenticate(request)) return request->requestAuthentication();
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String password = getSetting("adminPass", ADMIN_PASS);
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if (password.equals(ADMIN_PASS)) {
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request->send(SPIFFS, "/password.html");
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} else {
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request->send(SPIFFS, "/index.html");
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}
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}
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bool _apiAuth(AsyncWebServerRequest *request) {
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if (getSetting("apiEnabled").toInt() == 0) {
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DEBUG_MSG("[WEBSERVER] HTTP API is not enabled\n");
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request->send(403);
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return false;
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}
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if (!request->hasParam("apikey", (request->method() == HTTP_PUT))) {
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DEBUG_MSG("[WEBSERVER] Missing apikey parameter\n");
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request->send(403);
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return false;
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}
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AsyncWebParameter* p = request->getParam("apikey", (request->method() == HTTP_PUT));
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if (!p->value().equals(getSetting("apiKey"))) {
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DEBUG_MSG("[WEBSERVER] Wrong apikey parameter\n");
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request->send(403);
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return false;
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}
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return true;
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}
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void _onRelay(AsyncWebServerRequest *request) {
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_logRequest(request);
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if (!_apiAuth(request)) return;
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bool asJson = false;
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if (request->hasHeader("Accept")) {
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AsyncWebHeader* h = request->getHeader("Accept");
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asJson = h->value().equals("application/json");
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}
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String output;
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if (asJson) {
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output = relayString();
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request->send(200, "application/json", output);
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} else {
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for (unsigned int i=0; i<relayCount(); i++) {
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output += "Relay #" + String(i) + String(": ") + String(relayStatus(i) ? "1" : "0") + "\n";
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}
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request->send(200, "text/plain", output);
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}
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};
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ArRequestHandlerFunction _onRelayStatusWrapper(unsigned int relayID) {
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return [relayID](AsyncWebServerRequest *request) {
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_logRequest(request);
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if (!_apiAuth(request)) return;
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if (request->method() == HTTP_PUT) {
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if (request->hasParam("status", true)) {
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AsyncWebParameter* p = request->getParam("status", true);
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wsSend((char *) String(relayID).c_str());
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wsSend((char *) p->value().c_str());
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unsigned int value = p->value().toInt();
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if (value == 2) {
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relayToggle(relayID);
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} else {
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relayStatus(relayID, value == 1);
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}
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}
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}
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bool asJson = false;
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if (request->hasHeader("Accept")) {
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AsyncWebHeader* h = request->getHeader("Accept");
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asJson = h->value().equals("application/json");
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}
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String output;
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if (asJson) {
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output = String("{\"relayStatus\": ") + String(relayStatus(relayID) ? "1" : "0") + "}";
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request->send(200, "application/json", output);
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} else {
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request->send(200, "text/plain", relayStatus(relayID) ? "1" : "0");
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}
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};
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}
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void webSetup() {
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// Setup websocket
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ws.onEvent(_wsEvent);
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mqttRegister(wsMQTTCallback);
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// Setup webserver
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server.addHandler(&ws);
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// Serve home (basic authentication protection)
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server.on("/", HTTP_GET, _onHome);
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server.on("/index.html", HTTP_GET, _onHome);
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server.on("/auth", HTTP_GET, _onAuth);
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// API entry points (protected with apikey)
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for (unsigned int relayID=0; relayID<relayCount(); relayID++) {
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char buffer[15];
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sprintf(buffer, "/api/relay/%d", relayID);
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server.on(buffer, HTTP_GET + HTTP_PUT, _onRelayStatusWrapper(relayID));
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}
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server.on("/api/relay", HTTP_GET, _onRelay);
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// Serve static files
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char lastModified[50];
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sprintf(lastModified, "%s %s GMT", __DATE__, __TIME__);
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server.serveStatic("/", SPIFFS, "/").setLastModified(lastModified);
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// 404
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server.onNotFound([](AsyncWebServerRequest *request){
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request->send(404);
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});
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// Run server
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server.begin();
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}
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