368 lines
9.0 KiB
C++
368 lines
9.0 KiB
C++
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#ifndef LWIP_OPEN_SRC
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#define LWIP_OPEN_SRC
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#endif
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#include <functional>
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#include <WiFiUdp.h>
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#include "ArduinoOTA.h"
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#include "ESPmDNS.h"
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#include "MD5Builder.h"
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#include "Update.h"
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//#define OTA_DEBUG Serial
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ArduinoOTAClass::ArduinoOTAClass()
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: _port(0)
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, _initialized(false)
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, _rebootOnSuccess(true)
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, _mdnsEnabled(true)
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, _state(OTA_IDLE)
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, _size(0)
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, _cmd(0)
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, _ota_port(0)
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, _start_callback(NULL)
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, _end_callback(NULL)
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, _error_callback(NULL)
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, _progress_callback(NULL)
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{
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}
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ArduinoOTAClass::~ArduinoOTAClass(){
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_udp_ota.stop();
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}
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void ArduinoOTAClass::onStart(THandlerFunction fn) {
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_start_callback = fn;
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}
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void ArduinoOTAClass::onEnd(THandlerFunction fn) {
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_end_callback = fn;
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}
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void ArduinoOTAClass::onProgress(THandlerFunction_Progress fn) {
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_progress_callback = fn;
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}
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void ArduinoOTAClass::onError(THandlerFunction_Error fn) {
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_error_callback = fn;
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}
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void ArduinoOTAClass::setPort(uint16_t port) {
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if (!_initialized && !_port && port) {
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_port = port;
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}
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}
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void ArduinoOTAClass::setHostname(const char * hostname) {
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if (!_initialized && !_hostname.length() && hostname) {
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_hostname = hostname;
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}
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}
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String ArduinoOTAClass::getHostname() {
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return _hostname;
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}
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void ArduinoOTAClass::setPassword(const char * password) {
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if (!_initialized && !_password.length() && password) {
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MD5Builder passmd5;
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passmd5.begin();
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passmd5.add(password);
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passmd5.calculate();
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_password = passmd5.toString();
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}
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}
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void ArduinoOTAClass::setPasswordHash(const char * password) {
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if (!_initialized && !_password.length() && password) {
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_password = password;
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}
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}
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void ArduinoOTAClass::setRebootOnSuccess(bool reboot){
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_rebootOnSuccess = reboot;
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}
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void ArduinoOTAClass::setMdnsEnabled(bool enabled){
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_mdnsEnabled = enabled;
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}
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void ArduinoOTAClass::begin() {
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if (_initialized){
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log_w("already initialized");
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return;
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}
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if (!_port) {
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_port = 3232;
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}
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if(!_udp_ota.begin(_port)){
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log_e("udp bind failed");
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return;
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}
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if (!_hostname.length()) {
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char tmp[20];
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uint8_t mac[6];
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WiFi.macAddress(mac);
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sprintf(tmp, "esp32-%02x%02x%02x%02x%02x%02x", mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
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_hostname = tmp;
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}
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if(_mdnsEnabled){
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MDNS.begin(_hostname.c_str());
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MDNS.enableArduino(_port, (_password.length() > 0));
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}
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_initialized = true;
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_state = OTA_IDLE;
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#ifdef OTA_DEBUG
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OTA_DEBUG.printf("OTA server at: %s.local:%u\n", _hostname.c_str(), _port);
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#endif
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}
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int ArduinoOTAClass::parseInt(){
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char data[16];
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uint8_t index = 0;
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char value;
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while(_udp_ota.peek() == ' ') _udp_ota.read();
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while(true){
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value = _udp_ota.peek();
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if(value < '0' || value > '9'){
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data[index++] = '\0';
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return atoi(data);
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}
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data[index++] = _udp_ota.read();
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}
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return 0;
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}
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String ArduinoOTAClass::readStringUntil(char end){
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String res = "";
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char value;
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while(true){
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value = _udp_ota.read();
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if(value == '\0' || value == end){
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return res;
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}
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res += value;
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}
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return res;
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}
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void ArduinoOTAClass::_onRx(){
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if (_state == OTA_IDLE) {
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int cmd = parseInt();
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if (cmd != U_FLASH && cmd != U_SPIFFS)
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return;
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_cmd = cmd;
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_ota_port = parseInt();
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_size = parseInt();
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_udp_ota.read();
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_md5 = readStringUntil('\n');
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_md5.trim();
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if(_md5.length() != 32){
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return;
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}
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if (_password.length()){
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MD5Builder nonce_md5;
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nonce_md5.begin();
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nonce_md5.add(String(micros()));
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nonce_md5.calculate();
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_nonce = nonce_md5.toString();
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_udp_ota.beginPacket(_udp_ota.remoteIP(), _udp_ota.remotePort());
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_udp_ota.printf("AUTH %s", _nonce.c_str());
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_udp_ota.endPacket();
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_state = OTA_WAITAUTH;
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return;
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} else {
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_udp_ota.beginPacket(_udp_ota.remoteIP(), _udp_ota.remotePort());
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_udp_ota.print("OK");
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_udp_ota.endPacket();
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_ota_ip = _udp_ota.remoteIP();
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_state = OTA_RUNUPDATE;
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}
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} else if (_state == OTA_WAITAUTH) {
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int cmd = parseInt();
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if (cmd != U_AUTH) {
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_state = OTA_IDLE;
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return;
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}
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_udp_ota.read();
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String cnonce = readStringUntil(' ');
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String response = readStringUntil('\n');
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if (cnonce.length() != 32 || response.length() != 32) {
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_state = OTA_IDLE;
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return;
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}
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String challenge = _password + ":" + String(_nonce) + ":" + cnonce;
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MD5Builder _challengemd5;
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_challengemd5.begin();
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_challengemd5.add(challenge);
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_challengemd5.calculate();
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String result = _challengemd5.toString();
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if(result.equals(response)){
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_udp_ota.beginPacket(_udp_ota.remoteIP(), _udp_ota.remotePort());
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_udp_ota.print("OK");
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_udp_ota.endPacket();
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_ota_ip = _udp_ota.remoteIP();
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_state = OTA_RUNUPDATE;
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} else {
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_udp_ota.beginPacket(_udp_ota.remoteIP(), _udp_ota.remotePort());
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_udp_ota.print("Authentication Failed");
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_udp_ota.endPacket();
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if (_error_callback) _error_callback(OTA_AUTH_ERROR);
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_state = OTA_IDLE;
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}
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}
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}
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void ArduinoOTAClass::_runUpdate() {
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if (!Update.begin(_size, _cmd)) {
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#ifdef OTA_DEBUG
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Update.printError(OTA_DEBUG);
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#endif
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if (_error_callback) {
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_error_callback(OTA_BEGIN_ERROR);
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}
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_state = OTA_IDLE;
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return;
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}
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Update.setMD5(_md5.c_str());
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if (_start_callback) {
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_start_callback();
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}
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if (_progress_callback) {
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_progress_callback(0, _size);
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}
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WiFiClient client;
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if (!client.connect(_ota_ip, _ota_port)) {
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if (_error_callback) {
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_error_callback(OTA_CONNECT_ERROR);
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}
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_state = OTA_IDLE;
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}
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uint32_t written = 0, total = 0, tried = 0;
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while (!Update.isFinished() && client.connected()) {
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size_t waited = 1000;
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size_t available = client.available();
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while (!available && waited){
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delay(1);
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waited -=1 ;
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available = client.available();
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}
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if (!waited){
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if(written && tried++ < 3){
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#ifdef OTA_DEBUG
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OTA_DEBUG.printf("Try[%u]: %u\n", tried, written);
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#endif
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if(!client.printf("%u", written)){
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#ifdef OTA_DEBUG
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OTA_DEBUG.printf("failed to respond\n");
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#endif
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_state = OTA_IDLE;
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break;
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}
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continue;
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}
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#ifdef OTA_DEBUG
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OTA_DEBUG.printf("Receive Failed\n");
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#endif
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if (_error_callback) {
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_error_callback(OTA_RECEIVE_ERROR);
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}
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_state = OTA_IDLE;
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Update.abort();
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return;
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}
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if(!available){
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#ifdef OTA_DEBUG
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OTA_DEBUG.printf("No Data: %u\n", waited);
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#endif
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_state = OTA_IDLE;
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break;
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}
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tried = 0;
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static uint8_t buf[1460];
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if(available > 1460){
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available = 1460;
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}
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size_t r = client.read(buf, available);
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if(r != available){
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log_w("didn't read enough! %u != %u", r, available);
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}
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written = Update.write(buf, r);
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if (written > 0) {
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if(written != r){
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log_w("didn't write enough! %u != %u", written, r);
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}
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if(!client.printf("%u", written)){
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#ifdef OTA_DEBUG
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OTA_DEBUG.printf("failed to respond\n");
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#endif
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}
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total += written;
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if(_progress_callback) {
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_progress_callback(total, _size);
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}
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} else {
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#ifdef OTA_DEBUG
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Update.printError(OTA_DEBUG);
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#endif
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}
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}
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if (Update.end()) {
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client.print("OK");
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client.stop();
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delay(10);
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if (_end_callback) {
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_end_callback();
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}
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if(_rebootOnSuccess){
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//let serial/network finish tasks that might be given in _end_callback
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delay(100);
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ESP.restart();
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}
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} else {
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if (_error_callback) {
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_error_callback(OTA_END_ERROR);
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}
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Update.printError(client);
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client.stop();
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delay(10);
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#ifdef OTA_DEBUG
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OTA_DEBUG.print("Update ERROR: ");
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Update.printError(OTA_DEBUG);
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#endif
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_state = OTA_IDLE;
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}
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}
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void ArduinoOTAClass::handle() {
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if (_state == OTA_RUNUPDATE) {
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_runUpdate();
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_state = OTA_IDLE;
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}
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if(_udp_ota.parsePacket()){
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_onRx();
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_udp_ota.flush();
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}
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}
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int ArduinoOTAClass::getCommand() {
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return _cmd;
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}
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#if !defined(NO_GLOBAL_INSTANCES) && !defined(NO_GLOBAL_ARDUINOOTA)
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ArduinoOTAClass ArduinoOTA;
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#endif
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