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webServer.cpp
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webServer.cpp
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/****** Web server config ******/
#include "webServer.h"
bool shouldReboot = false;
bool sendBinDataAsString = false;
bool sendFFT = true;
char hostName[32];
AsyncWebServer webServer(PORT_WEBSERVER);
#if USE_NATIVE_WEBSOCKET_LIB
AsyncWebSocket wsGeophone("/geophone"), wsFFT("/fft"), wsConsole("/console");
#else
WebSocketsServer wsGeophone(PORT_WEBSOCKET_GEOPHONE), wsFFT(PORT_WEBSOCKET_FFT), wsConsole(PORT_WEBSOCKET_CONSOLE);
#endif
/***************************************************/
/****** SETUP FUNCTIONS ******/
/***************************************************/
void setupWebServer() { // Initializes hostName, mDNS, HTTP server, OTA methods (HTTP-based and IDE-based) and webSockets
// Initialize file system, so we can read/write config and web files
if (!SPIFFS.begin()) {
consolePrintF("Failed to mount file system!!\n");
} else {
consolePrintF("SPIFFS loaded!\n");
}
// Initialize hostName
if (UNIQUE_HOSTNAME) {
sprintf(hostName, "Geophone-%06X", ESP.getChipId());
} else {
sprintf(hostName, "GeophoneDuino");
}
// Setup mDNS so we don't need to know its IP
#if USE_MDNS
consolePrintF("Starting mDNS... ");
if (MDNS.begin(hostName)) {
consolePrintF("Started! you can now also contact me through 'http://%s.local'\n", hostName);
MDNS.addService(F("http"), F("tcp"), PORT_WEBSERVER);
MDNS.addService(F("ws"), F("tcp"), PORT_WEBSOCKET_GEOPHONE);
MDNS.addService(F("ws"), F("tcp"), PORT_WEBSOCKET_CONSOLE);
} else {
consolePrintF("Unable to start mDNS :(\n");
}
#endif
// Start servers and websockets
webServer.rewrite("/WiFi", "/WiFi.html");
webServer.on(SF("/WiFiNets").c_str(), HTTP_GET, webServerWLANscan);
webServer.on(SF("/WiFiSave").c_str(), HTTP_POST, webServerWLANsave);
webServer.on(SF("/heap").c_str(), HTTP_GET, [](AsyncWebServerRequest* request) { AsyncWebServerResponse* response = request->beginResponse(200, CONT(TYPE_PLAIN), String(ESP.getFreeHeap()) + F(" B")); addNoCacheHeaders(response); response->addHeader(F("Refresh"), F("2")); request->send(response); });
webServer.on(SF("/restart").c_str(), HTTP_GET, [](AsyncWebServerRequest* request) { AsyncWebServerResponse* response = request->beginResponse(200, contentType_P[TYPE_PLAIN], F("Restarting!")); addNoCacheHeaders(response); response->addHeader(F("Refresh"), F("15; url=/heap")); request->send(response); shouldReboot = true; });
webServer.serveStatic("/", SPIFFS, "/www/", "public, max-age=1209600").setDefaultFile("index.html"); // Cache for 2 weeks :)
webServer.on("/OTA", HTTP_GET, [](AsyncWebServerRequest* request) {
request->send(200, CONT(TYPE_HTML), F("<form method='POST' action='/OTA' enctype='multipart/form-data'><input type='file' name='update'><input type='submit' value='Update'></form>"));
});
webServer.on("/OTA", HTTP_POST, [](AsyncWebServerRequest* request) {
shouldReboot = !Update.hasError();
AsyncWebServerResponse *response = request->beginResponse(200, "text/plain", shouldReboot? "Succssfully got new firmware! Restarting...":"Something went wrong uploading the firmware, sorry try again :(");
addNoCacheHeaders(response);
response->addHeader(F("Refresh"), F("15; url=/heap"));
request->send(response);
}, [](AsyncWebServerRequest *request, String filename, size_t index, uint8_t *data, size_t len, bool final){
if (!index) {
consolePrintF("\n\t---> OTA update start! %s\n", filename.c_str());
//Update.runAsync(true);
if (!Update.begin((ESP.getFreeSketchSpace() - 0x1000) & 0xFFFFF000)){
Update.printError(Serial);
}
}
if (!Update.hasError()) {
if (Update.write(data, len) != len) {
Update.printError(Serial);
}
}
if (final) {
if (Update.end(true)) {
consolePrintF("\n\t---> Successful OTA upload: %uB!\n", index+len);
} else {
Update.printError(Serial);
}
}
});
webServer.on(SF("/upload").c_str(), HTTP_GET, [](AsyncWebServerRequest* request){ if (SPIFFS.exists(F("/upload.html"))) { request->send(SPIFFS, F("/upload.html")); } else { request->send(200, contentType_P[TYPE_HTML], F("<html><head><link rel=\"stylesheet\" href=\"css/styles.css\"></head><body><h1>Secret file uploader</h1><form method=\"POST\" action=\"upload\" enctype=\"multipart/form-data\"><p>New file name: <input type=\"text\" placeholder=\"/\" name=\"fileName\" value=\"\" /><br><input type=\"file\" name=\"fileContent\" value=\"\" /><br><input type=\"submit\" value=\"Upload file\" /></p></form></body></html>")); } });
webServer.on(SF("/upload").c_str(), HTTP_POST, [](AsyncWebServerRequest* request){ bool ok = renameFileUpload(request->arg(F("fileName"))); request->redirect(SF("upload?f=") + request->arg(F("fileName")) + F("&ok=") + ok); }, handleFileUpload);
webServer.addHandler(new SPIFFSEditor(WEB_FILE_EDITOR_USERNAME, WEB_FILE_EDITOR_PASS));
webServer.onNotFound([](AsyncWebServerRequest* request) { request->send(404, CONT(TYPE_PLAIN), SF("Not found: ") + request->url()); });
#if USE_NATIVE_WEBSOCKET_LIB
wsGeophone.onEvent(onWsEvent);
webServer.addHandler(&wsGeophone);
wsConsole.onEvent(onWsEvent);
webServer.addHandler(&wsConsole);
#if DO_FFT
wsFFT.onEvent(onWsEvent);
webServer.addHandler(&wsFFT);
#endif
#else
wsGeophone.begin();
wsGeophone.onEvent([](uint8_t num, WStype_t type, uint8_t * payload, size_t len) { onWsEvent(&wsGeophone, num, type, payload, len); });
wsConsole.begin();
wsConsole.onEvent([](uint8_t num, WStype_t type, uint8_t * payload, size_t len) { onWsEvent(&wsConsole, num, type, payload, len); });
#if DO_FFT
wsFFT.begin();
wsFFT.onEvent([](uint8_t num, WStype_t type, uint8_t * payload, size_t len) { onWsEvent(&wsFFT, num, type, payload, len); });
#endif
#endif
webServer.begin();
// Also, setup Arduino's OTA (only works from their IDE)
#if USE_ARDUINO_OTA
ArduinoOTA.setHostname(hostName);
ArduinoOTA.setPort(PORT_ARDUINO_OTA);
ArduinoOTA.setPassword(WEB_FILE_EDITOR_PASS);
ArduinoOTA.onStart([]() {
consolePrintF("OTA: Start!\n");
// Fade in and out the builtin led
for(int i=PWM_RANGE; i>0; i--) { analogWrite(LED_BUILTIN, i); delay(1); }
for(int i=0; i<=PWM_RANGE; i++) { analogWrite(LED_BUILTIN, i); delay(1); }
pinMode(LED_BUILTIN, OUTPUT); // ArduinoOTA blinks the LED_BUILTIN on progress, but digitalWrite doesn't work well after analogWrite. Solution is to reset the pin as output
});
ArduinoOTA.onEnd([]() {
consolePrintF("OTA: Firmware update succeeded!\n");
for (int i=0; i<30; i++) { analogWrite(LED_BUILTIN, (i*100) % 1001); delay(50); }
});
ArduinoOTA.onProgress([](unsigned int progress, unsigned int total) {
consolePrintF("OTA: %3u%% completed (%4u KB de %4u KB)\r", progress / (total/100), progress>>10, total>>10);
// analogWrite(LED_BUILTIN, int((total-progress) / (total/PWM_RANGE))); // Recuerda que el builtin led es active low -> Luz apagada (0%) quiere decir escribir PWM_RANGE; Luz encendida (100%) -> Escribir 0
});
ArduinoOTA.onError([](ota_error_t error) {
consolePrintF("\nOTA: Error[%u]: ", error);
if (error == OTA_AUTH_ERROR) consolePrintF("Authentication failed\n");
else if (error == OTA_BEGIN_ERROR) consolePrintF("Begin failed\n");
else if (error == OTA_CONNECT_ERROR) consolePrintF("Connection failed\n");
else if (error == OTA_RECEIVE_ERROR) consolePrintF("Reception failed\n");
else if (error == OTA_END_ERROR) consolePrintF("End failed\n");
consolePrintF("Rebooting Arduino...\n");
ESP.restart();
});
ArduinoOTA.begin();
#endif
}
/*********************************************************/
/****** Web server related functions ******/
/*********************************************************/
void addNoCacheHeaders(AsyncWebServerResponse* response) { // Add specific headers to an http response to avoid caching
response->addHeader(F("Cache-Control"), F("no-cache, no-store, must-revalidate"));
response->addHeader(F("Pragma"), F("no-cache"));
response->addHeader(F("Expires"), F("-1"));
}
void handleFileUpload(AsyncWebServerRequest *request, String filename, size_t index, uint8_t *data, size_t len, bool final) { // Allows user to upload a file to the SPIFFS (so we don't have to write the whole Flash via USB)
static File fUpload;
if (!index) {
consolePrintF("\nUploading new SPIFFS file (to the temporary path %s) with filename %s\n", UPLOAD_TEMP_FILENAME, filename.c_str());
fUpload = SPIFFS.open(UPLOAD_TEMP_FILENAME, "w");
}
if (fUpload)
fUpload.write(data, len);
if (final) {
if (fUpload)
fUpload.close();
consolePrintF("Successfully uploaded new SPIFFS file with filename %s (%u B)!\n", filename.c_str(), index+len);
}
}
bool renameFileUpload(String fileName) { // Renames the last file uploaded to the new file name provided
if (!fileName.startsWith("/"))
fileName = "/" + fileName;
if (SPIFFS.exists(fileName)) {
SPIFFS.remove(fileName);
consolePrintF("\t(File already existed, removing old version -> Overwriting)\n");
}
bool r = SPIFFS.rename(UPLOAD_TEMP_FILENAME, fileName);
consolePrintF("%s temporary file %s -> %s\n\n", (r? SF("Successfully renamed"):SF("Couldn't rename")).c_str(), UPLOAD_TEMP_FILENAME, fileName.c_str());
return r;
}
void webServerWLANscan(AsyncWebServerRequest* request) { // Handles secret HTTP page that scans WLAN networks
String json = SF("{\"currAP\":{\"ssid\":\"") + SOFT_AP_SSID + F("\",\"ip\":\"") + WiFi.softAPIP().toString() + F("\"},"
"\"currWLAN\":{\"ssid\":\"") + String(wlanSSID) + F("\",\"pass\":\"") + String(wlanPass) + F("\",\"ip\":\"") + wlanMyIP.toString() + F("\",\"gateway\":\"") + wlanGateway.toString() + F("\",\"mask\":\"") + wlanMask.toString() + F("\"},"
"\"nets\":[");
int n = WiFi.scanComplete();
if (n == -2) {
WiFi.scanNetworks(true);
} else {
for (int i=0; i<n; ++i) {
if (i) json += ",";
json += SF("{"
"\"rssi\":") + String(WiFi.RSSI(i)) + F(","
"\"ssid\":\"") + WiFi.SSID(i) + F("\","
"\"bssid\":\"") + WiFi.BSSIDstr(i) + F("\","
"\"channel\":") + String(WiFi.channel(i)) + F(","
"\"secure\":") + String(WiFi.encryptionType(i)) + F(","
"\"hidden\":") + String(WiFi.isHidden(i)) + F(
"}");
}
WiFi.scanDelete();
if(WiFi.scanComplete() == -2){
WiFi.scanNetworks(true);
}
}
json += "]}";
AsyncWebServerResponse* response = request->beginResponse(200, CONT(TYPE_JSON), json);
addNoCacheHeaders(response);
request->send(response);
json = String();
}
void webServerWLANsave(AsyncWebServerRequest* request) { // Handles secret HTTP page that saves new WLAN settings
consolePrintF("Received request to save new WLAN settings!\n");
bool bSSIDmanual = false;
if (request->hasArg(F("ssidManualChk"))) bSSIDmanual = (request->arg(SF("ssidManualChk"))=="on");
if (request->hasArg(bSSIDmanual? CF("ssidManualTxt"):CF("ssidDropdown"))) request->arg(bSSIDmanual? SF("ssidManualTxt"):SF("ssidDropdown")).toCharArray(wlanSSID, sizeof(wlanSSID)-1);
if (request->hasArg(F("pass"))) request->arg(SF("pass")).toCharArray(wlanPass, sizeof(wlanPass)-1);
if (request->hasArg(F("ip"))) wlanMyIP.fromString(request->arg(SF("ip")));
if (request->hasArg(F("gateway"))) wlanGateway.fromString(request->arg(SF("gateway")));
if (request->hasArg(F("mask"))) wlanMask.fromString(request->arg(SF("mask")));
saveWLANconfig(); // Write new settings to EEPROM
AsyncWebServerResponse* response = request->beginResponse(200, contentType_P[TYPE_HTML], SF("<html><head><link rel=\"stylesheet\" href=\"css/styles.css\"></head><body><h1>WiFi config successfully saved!</h1><p>SSID: ") + wlanSSID + F("<br>IP: ") + wlanMyIP.toString() + F("<br>Gateway: ") + wlanGateway.toString() + F("<br>Mask: ") + wlanMask.toString() + F("</p></body></html>"));
addNoCacheHeaders(response);
request->send(response);
}
#if USE_NATIVE_WEBSOCKET_LIB
void onWsEvent(AsyncWebSocket* server, AsyncWebSocketClient* client, AwsEventType type, void* arg, uint8_t * data, size_t len) { // webSocket event callback function
switch (type) {
case WS_EVT_CONNECT:
consolePrintF("[WebSocket '%s'] Client connected from %s:%d (clientId %u)\n", server->url(), client->remoteIP().toString().c_str(), client->remotePort(), client->id());
client->text(SOFT_AP_SSID); // send message to client to confirm connection ok
break;
case WS_EVT_ERROR:
consolePrintf("[WebSocket '%s'] ClientId %u error(%u): %s\n", server->url(), client->id(), *((uint16_t*)arg), (char*)data);
break;
default:
break;
}
}
#else
void onWsEvent(WebSocketsServer* ws, uint8_t num, WStype_t type, uint8_t * payload, size_t len) { // webSocket event callback function
switch(type) {
case WStype_CONNECTED:
consolePrintF("[WebSocket '%s'] Client connected from %s (clientID %u)\n", payload, ws->remoteIP(num).toString().c_str(), num);
ws->broadcastTXT(SOFT_AP_SSID); // send message to client to confirm connection ok
break;
case WStype_ERROR:
consolePrintF("[WebSocket] ClientID %u error: %s\n", num, payload);
break;
case WStype_DISCONNECTED:
case WStype_TEXT:
case WStype_BIN:
default:
break;
}
}
#endif
void consolePrintf(const char * format, ...) { // Log messages through webSocketConsole and Serial
char buf[1024];
va_list args;
va_start(args, format);
size_t len = vsnprintf(buf, sizeof(buf), format, args);
va_end(args);
#if USE_NATIVE_WEBSOCKET_LIB
wsConsole.textAll(buf, len);
#else
wsConsole.broadcastTXT(buf, len);
#endif
Serial.printf(buf);
}
void processWebServer() { // "webServer.loop()" function: handle incoming OTA connections (if any), http requests and webSocket events
uint32_t t_msec = curr_time%1000, t_sec = curr_time/1000, t_min = t_sec/60, t_hr = t_min/60; t_sec %= 60; t_min %= 60;
static uint32_t last_t_sec = 0;
if (t_sec != last_t_sec) { // Every second, log that we are alive
last_t_sec = t_sec;
consolePrintF("Still alive (t=%3d:%02d'%02d\"); HEAP: %5d B\n", t_hr, t_min, t_sec, ESP.getFreeHeap());
}
if (geophone_buf_got_full) {
geophone_buf_got_full = false; // Remember to reset this flag so we only send when the next buffer is full ;)
unsigned int buf_id = !geophone_buf_id_current; // Use the *opposite* buffer id of the one being filled currently (so we send the one that's already full)
if (sendBinDataAsString) {
String strWebSocket = "[" + String(geophone_buf[buf_id][0]);
for (unsigned int i=1; i<GEOPHONE_BUF_SIZE; ++i) {
strWebSocket += "," + String(geophone_buf[buf_id][i]);
}
strWebSocket += "]";
#if USE_NATIVE_WEBSOCKET_LIB
wsGeophone.textAll(strWebSocket);
#else
wsGeophone.broadcastTXT(strWebSocket);
#endif
strWebSocket = String();
} else {
#if USE_NATIVE_WEBSOCKET_LIB
wsGeophone.binaryAll(reinterpret_cast<uint8_t*>(geophone_buf[buf_id]), sizeof(geophone_buf[0]));
#else
wsGeophone.broadcastBIN(reinterpret_cast<uint8_t*>(geophone_buf[buf_id]), sizeof(geophone_buf[0]));
#endif
}
#if DO_FFT
performFFT(buf_id);
if (sendBinDataAsString) {
String strWebSocket = "[" + String(fft_real[0]);
for (uint16_t i=1; i<=N_FFT/2; ++i) {
strWebSocket += "," + String(fft_real[i]);
}
strWebSocket += "]";
#if USE_NATIVE_WEBSOCKET_LIB
wsFFT.textAll(strWebSocket);
#else
wsFFT.broadcastTXT(strWebSocket);
#endif
strWebSocket = String();
} else {
#if USE_NATIVE_WEBSOCKET_LIB
wsFFT.binaryAll(reinterpret_cast<uint8_t*>(fft_real), sizeof(fft_real[0])*(1 + N_FFT/2)); // FFT is symmetrical, no need to send the 2nd half of the buffer, only [0 - N_FFT/2])
#else
wsFFT.broadcastBIN(reinterpret_cast<uint8_t*>(fft_real), sizeof(fft_real[0])*(1 + N_FFT/2)); // FFT is symmetrical, no need to send the 2nd half of the buffer, only [0 - N_FFT/2])
#endif
}
#endif
}
#if !USE_NATIVE_WEBSOCKET_LIB && WEBSOCKETS_NETWORK_TYPE!=NETWORK_ESP8266_ASYNC
wsFFT.loop();
wsGeophone.loop();
wsConsole.loop();
#endif
if (shouldReboot) ESP.restart(); // AsyncWebServer doesn't suggest rebooting from async callbacks, so we set a flag and reboot from here :)
#if USE_ARDUINO_OTA
ArduinoOTA.handle();
#endif
}