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371 lines (325 loc) · 8.18 KB
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#ifndef LWIP_OPEN_SRC
#define LWIP_OPEN_SRC
#endif
#include <functional>
#include <WiFiUdp.h>
#include "ArduinoOTA.h"
#include "MD5Builder.h"
#include "StreamString.h"
extern "C" {
#include "osapi.h"
#include "ets_sys.h"
#include "user_interface.h"
}
#include "lwip/opt.h"
#include "lwip/udp.h"
#include "lwip/inet.h"
#include "lwip/igmp.h"
#include "lwip/mem.h"
#include "include/UdpContext.h"
#if !defined(NO_GLOBAL_INSTANCES) && !defined(NO_GLOBAL_MDNS)
#include <ESP8266mDNS.h>
#endif
#ifdef DEBUG_ESP_OTA
#ifdef DEBUG_ESP_PORT
#define OTA_DEBUG DEBUG_ESP_PORT
#endif
#endif
ArduinoOTAClass::ArduinoOTAClass()
{
}
ArduinoOTAClass::~ArduinoOTAClass(){
if(_udp_ota){
_udp_ota->unref();
_udp_ota = 0;
}
}
void ArduinoOTAClass::onStart(THandlerFunction fn) {
_start_callback = fn;
}
void ArduinoOTAClass::onEnd(THandlerFunction fn) {
_end_callback = fn;
}
void ArduinoOTAClass::onProgress(THandlerFunction_Progress fn) {
_progress_callback = fn;
}
void ArduinoOTAClass::onError(THandlerFunction_Error fn) {
_error_callback = fn;
}
void ArduinoOTAClass::setPort(uint16_t port) {
if (!_initialized && !_port && port) {
_port = port;
}
}
void ArduinoOTAClass::setHostname(const char * hostname) {
if (!_initialized && !_hostname.length() && hostname) {
_hostname = hostname;
}
}
String ArduinoOTAClass::getHostname() {
return _hostname;
}
void ArduinoOTAClass::setPassword(const char * password) {
if (!_initialized && !_password.length() && password) {
MD5Builder passmd5;
passmd5.begin();
passmd5.add(password);
passmd5.calculate();
_password = passmd5.toString();
}
}
void ArduinoOTAClass::setPasswordHash(const char * password) {
if (!_initialized && !_password.length() && password) {
_password = password;
}
}
void ArduinoOTAClass::setRebootOnSuccess(bool reboot){
_rebootOnSuccess = reboot;
}
void ArduinoOTAClass::begin(bool useMDNS) {
if (_initialized)
return;
_useMDNS = useMDNS;
if (!_hostname.length()) {
char tmp[15];
sprintf(tmp, "esp8266-%06x", ESP.getChipId());
_hostname = tmp;
}
if (!_port) {
_port = 8266;
}
if(_udp_ota){
_udp_ota->unref();
_udp_ota = 0;
}
_udp_ota = new UdpContext;
_udp_ota->ref();
if(!_udp_ota->listen(IP_ADDR_ANY, _port))
return;
_udp_ota->onRx(std::bind(&ArduinoOTAClass::_onRx, this));
#if !defined(NO_GLOBAL_INSTANCES) && !defined(NO_GLOBAL_MDNS)
if(_useMDNS) {
MDNS.begin(_hostname.c_str());
if (_password.length()) {
MDNS.enableArduino(_port, true);
} else {
MDNS.enableArduino(_port);
}
}
#endif
_initialized = true;
_state = OTA_IDLE;
#ifdef OTA_DEBUG
OTA_DEBUG.printf("OTA server at: %s.local:%u\n", _hostname.c_str(), _port);
#endif
}
int ArduinoOTAClass::parseInt(){
char data[16];
uint8_t index;
char value;
while(_udp_ota->peek() == ' ') _udp_ota->read();
for(index = 0; index < sizeof(data); ++index){
value = _udp_ota->peek();
if(value < '0' || value > '9'){
data[index] = '\0';
return atoi(data);
}
data[index] = _udp_ota->read();
}
return 0;
}
String ArduinoOTAClass::readStringUntil(char end){
String res;
int value;
while(true){
value = _udp_ota->read();
if(value < 0 || value == '\0' || value == end){
return res;
}
res += static_cast<char>(value);
}
return res;
}
void ArduinoOTAClass::_onRx(){
if(!_udp_ota->next()) return;
IPAddress ota_ip;
if (_state == OTA_IDLE) {
int cmd = parseInt();
if (cmd != U_FLASH && cmd != U_FS)
return;
_ota_ip = _udp_ota->getRemoteAddress();
_cmd = cmd;
_ota_port = parseInt();
_ota_udp_port = _udp_ota->getRemotePort();
_size = parseInt();
_udp_ota->read();
_md5 = readStringUntil('\n');
_md5.trim();
if(_md5.length() != 32)
return;
ota_ip = _ota_ip;
if (_password.length()){
MD5Builder nonce_md5;
nonce_md5.begin();
nonce_md5.add(String(micros()));
nonce_md5.calculate();
_nonce = nonce_md5.toString();
char auth_req[38];
sprintf(auth_req, "AUTH %s", _nonce.c_str());
_udp_ota->append((const char *)auth_req, strlen(auth_req));
_udp_ota->send(ota_ip, _ota_udp_port);
_state = OTA_WAITAUTH;
return;
} else {
_state = OTA_RUNUPDATE;
}
} else if (_state == OTA_WAITAUTH) {
int cmd = parseInt();
if (cmd != U_AUTH) {
_state = OTA_IDLE;
return;
}
_udp_ota->read();
String cnonce = readStringUntil(' ');
String response = readStringUntil('\n');
if (cnonce.length() != 32 || response.length() != 32) {
_state = OTA_IDLE;
return;
}
String challenge = _password + ':' + String(_nonce) + ':' + cnonce;
MD5Builder _challengemd5;
_challengemd5.begin();
_challengemd5.add(challenge);
_challengemd5.calculate();
String result = _challengemd5.toString();
ota_ip = _ota_ip;
if(result.equalsConstantTime(response)) {
_state = OTA_RUNUPDATE;
} else {
_udp_ota->append("Authentication Failed", 21);
_udp_ota->send(ota_ip, _ota_udp_port);
if (_error_callback) _error_callback(OTA_AUTH_ERROR);
_state = OTA_IDLE;
}
}
while(_udp_ota->next()) _udp_ota->flush();
}
void ArduinoOTAClass::_runUpdate() {
IPAddress ota_ip = _ota_ip;
if (!Update.begin(_size, _cmd)) {
#ifdef OTA_DEBUG
OTA_DEBUG.println("Update Begin Error");
#endif
if (_error_callback) {
_error_callback(OTA_BEGIN_ERROR);
}
StreamString ss;
Update.printError(ss);
_udp_ota->append("ERR: ", 5);
_udp_ota->append(ss.c_str(), ss.length());
_udp_ota->send(ota_ip, _ota_udp_port);
delay(100);
_udp_ota->listen(IP_ADDR_ANY, _port);
_state = OTA_IDLE;
return;
}
_udp_ota->append("OK", 2);
_udp_ota->send(ota_ip, _ota_udp_port);
delay(100);
Update.setMD5(_md5.c_str());
WiFiUDP::stopAll();
WiFiClient::stopAll();
if (_start_callback) {
_start_callback();
}
if (_progress_callback) {
_progress_callback(0, _size);
}
WiFiClient client;
if (!client.connect(_ota_ip, _ota_port)) {
#ifdef OTA_DEBUG
OTA_DEBUG.printf("Connect Failed\n");
#endif
_udp_ota->listen(IP_ADDR_ANY, _port);
if (_error_callback) {
_error_callback(OTA_CONNECT_ERROR);
}
_state = OTA_IDLE;
}
// OTA sends little packets
client.setNoDelay(true);
uint32_t written, total = 0;
while (!Update.isFinished() && (client.connected() || client.available())) {
int waited = 1000;
while (!client.available() && waited--)
delay(1);
if (!waited){
#ifdef OTA_DEBUG
OTA_DEBUG.printf("Receive Failed\n");
#endif
_udp_ota->listen(IP_ADDR_ANY, _port);
if (_error_callback) {
_error_callback(OTA_RECEIVE_ERROR);
}
_state = OTA_IDLE;
}
written = Update.write(client);
if (written > 0) {
client.print(written, DEC);
total += written;
if(_progress_callback) {
_progress_callback(total, _size);
}
}
}
if (Update.end()) {
// Ensure last count packet has been sent out and not combined with the final OK
client.flush();
delay(1000);
client.print("OK");
client.flush();
delay(1000);
client.stop();
#ifdef OTA_DEBUG
OTA_DEBUG.printf("Update Success\n");
#endif
if (_end_callback) {
_end_callback();
}
if(_rebootOnSuccess){
#ifdef OTA_DEBUG
OTA_DEBUG.printf("Rebooting...\n");
#endif
//let serial/network finish tasks that might be given in _end_callback
delay(100);
ESP.restart();
}
} else {
_udp_ota->listen(IP_ADDR_ANY, _port);
if (_error_callback) {
_error_callback(OTA_END_ERROR);
}
Update.printError(client);
#ifdef OTA_DEBUG
Update.printError(OTA_DEBUG);
#endif
_state = OTA_IDLE;
}
}
//this needs to be called in the loop()
void ArduinoOTAClass::handle() {
if (_state == OTA_RUNUPDATE) {
_runUpdate();
_state = OTA_IDLE;
}
#if !defined(NO_GLOBAL_INSTANCES) && !defined(NO_GLOBAL_MDNS)
if(_useMDNS)
MDNS.update(); //handle MDNS update as well, given that ArduinoOTA relies on it anyways
#endif
}
int ArduinoOTAClass::getCommand() {
return _cmd;
}
#if !defined(NO_GLOBAL_INSTANCES) && !defined(NO_GLOBAL_ARDUINOOTA)
ArduinoOTAClass ArduinoOTA;
#endif
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