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hr-kapanakovhr-kapanakov
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HTTPUpdateServer library (#4244)
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‎libraries/HTTPUpdateServer/examples/WebUpdater/WebUpdater.ino‎

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/*
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To upload through terminal you can use: curl -F "[email protected]" esp32-webupdate.local/update
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*/
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#include <WiFi.h>
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#include <WiFiClient.h>
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#include <WebServer.h>
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#include <ESPmDNS.h>
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#include <HTTPUpdateServer.h>
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#ifndef STASSID
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#define STASSID "your-ssid"
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#define STAPSK "your-password"
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#endif
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const char* host = "esp32-webupdate";
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const char* ssid = STASSID;
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const char* password = STAPSK;
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WebServer httpServer(80);
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HTTPUpdateServer httpUpdater;
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void setup(void) {
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Serial.begin(115200);
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Serial.println();
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Serial.println("Booting Sketch...");
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WiFi.mode(WIFI_AP_STA);
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WiFi.begin(ssid, password);
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while (WiFi.waitForConnectResult() != WL_CONNECTED) {
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WiFi.begin(ssid, password);
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Serial.println("WiFi failed, retrying.");
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}
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MDNS.begin(host);
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if (MDNS.begin("esp32")) {
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Serial.println("mDNS responder started");
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}
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httpUpdater.setup(&httpServer);
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httpServer.begin();
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MDNS.addService("http", "tcp", 80);
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Serial.printf("HTTPUpdateServer ready! Open http://%s.local/update in your browser\n", host);
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}
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void loop(void) {
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httpServer.handleClient();
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}

‎libraries/HTTPUpdateServer/keywords.txt‎

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#######################################
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# Syntax Coloring Map For HTTPUpdateServer
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#######################################
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#######################################
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# Datatypes (KEYWORD1)
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#######################################
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ESP32HTTPUpdateServer KEYWORD1
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#######################################
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# Methods and Functions (KEYWORD2)
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#######################################
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begin KEYWORD2
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setup KEYWORD2
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#######################################
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# Constants (LITERAL1)
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#######################################

‎libraries/HTTPUpdateServer/library.properties‎

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name=HTTPUpdateServer
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version=1.0
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author=Hristo Kapanakov
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maintainer=
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sentence=Simple HTTP Update server based on the WebServer
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paragraph=The library accepts HTTP post requests to the /update url, and updates the ESP32 firmware.
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category=Communication
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url=
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architectures=esp32

‎libraries/HTTPUpdateServer/src/HTTPUpdateServer.h‎

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#ifndef __HTTP_UPDATE_SERVER_H
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#define __HTTP_UPDATE_SERVER_H
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#include<SPIFFS.h>
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#include <StreamString.h>
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#include <Update.h>
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#include <WebServer.h>
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static const char serverIndex[] PROGMEM =
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R"(<!DOCTYPE html>
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<html lang='en'>
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<head>
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<meta charset='utf-8'>
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<meta name='viewport' content='width=device-width,initial-scale=1'/>
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</head>
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<body>
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<form method='POST' action='' enctype='multipart/form-data'>
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Firmware:<br>
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<input type='file' accept='.bin,.bin.gz' name='firmware'>
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<input type='submit' value='Update Firmware'>
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</form>
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<form method='POST' action='' enctype='multipart/form-data'>
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FileSystem:<br>
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<input type='file' accept='.bin,.bin.gz,.image' name='filesystem'>
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<input type='submit' value='Update FileSystem'>
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</form>
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</body>
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</html>)";
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static const char successResponse[] PROGMEM =
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"<META http-equiv=\"refresh\" content=\"15;URL=/\">Update Success! Rebooting...";
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class HTTPUpdateServer
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{
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public:
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HTTPUpdateServer(bool serial_debug=false) {
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_serial_output = serial_debug;
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_server = NULL;
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_username = emptyString;
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_password = emptyString;
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_authenticated = false;
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}
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void setup(WebServer *server)
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{
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setup(server, emptyString, emptyString);
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}
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void setup(WebServer *server, const String& path)
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{
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setup(server, path, emptyString, emptyString);
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}
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void setup(WebServer *server, const String& username, const String& password)
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{
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setup(server, "/update", username, password);
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}
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void setup(WebServer *server, const String& path, const String& username, const String& password)
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{
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_server = server;
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_username = username;
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_password = password;
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// handler for the /update form page
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_server->on(path.c_str(), HTTP_GET, [&]() {
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if (_username != emptyString && _password != emptyString && !_server->authenticate(_username.c_str(), _password.c_str()))
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return _server->requestAuthentication();
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_server->send_P(200, PSTR("text/html"), serverIndex);
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});
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// handler for the /update form POST (once file upload finishes)
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_server->on(path.c_str(), HTTP_POST, [&]() {
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if (!_authenticated)
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return _server->requestAuthentication();
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if (Update.hasError()) {
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_server->send(200, F("text/html"), String(F("Update error: ")) + _updaterError);
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}
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else {
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_server->client().setNoDelay(true);
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_server->send_P(200, PSTR("text/html"), successResponse);
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delay(100);
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_server->client().stop();
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ESP.restart();
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}
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}, [&]() {
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// handler for the file upload, get's the sketch bytes, and writes
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// them through the Update object
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HTTPUpload& upload = _server->upload();
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if (upload.status == UPLOAD_FILE_START) {
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_updaterError.clear();
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if (_serial_output)
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Serial.setDebugOutput(true);
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_authenticated = (_username == emptyString || _password == emptyString || _server->authenticate(_username.c_str(), _password.c_str()));
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if (!_authenticated) {
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if (_serial_output)
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Serial.printf("Unauthenticated Update\n");
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return;
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}
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if (_serial_output)
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Serial.printf("Update: %s\n", upload.filename.c_str());
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if (upload.name == "filesystem") {
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if (!Update.begin(SPIFFS.totalBytes(), U_SPIFFS)) {//start with max available size
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if (_serial_output) Update.printError(Serial);
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}
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}
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else {
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uint32_t maxSketchSpace = (ESP.getFreeSketchSpace() - 0x1000) & 0xFFFFF000;
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if (!Update.begin(maxSketchSpace, U_FLASH)) {//start with max available size
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_setUpdaterError();
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}
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}
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}
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else if (_authenticated && upload.status == UPLOAD_FILE_WRITE && !_updaterError.length()) {
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if (_serial_output) Serial.printf(".");
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if (Update.write(upload.buf, upload.currentSize) != upload.currentSize) {
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_setUpdaterError();
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}
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}
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else if (_authenticated && upload.status == UPLOAD_FILE_END && !_updaterError.length()) {
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if (Update.end(true)) { //true to set the size to the current progress
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if (_serial_output) Serial.printf("Update Success: %u\nRebooting...\n", upload.totalSize);
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}
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else {
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_setUpdaterError();
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}
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if (_serial_output) Serial.setDebugOutput(false);
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}
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else if (_authenticated && upload.status == UPLOAD_FILE_ABORTED) {
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Update.end();
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if (_serial_output) Serial.println("Update was aborted");
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}
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delay(0);
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});
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}
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void updateCredentials(const String& username, const String& password)
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{
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_username = username;
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_password = password;
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}
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protected:
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void _setUpdaterError()
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{
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if (_serial_output) Update.printError(Serial);
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StreamString str;
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Update.printError(str);
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_updaterError = str.c_str();
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}
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private:
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bool _serial_output;
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WebServer *_server;
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String _username;
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String _password;
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bool _authenticated;
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String _updaterError;
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};
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#endif

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