FirebaseObject FirebaseArduino::readEvent() {
auto client = http_->getStreamPtr();
String type = client->readStringUntil('\n').substring(7);;
String event = client->readStringUntil('\n').substring(6);
client->readStringUntil('\n'); // consume separator
FirebaseObject obj = FirebaseObject(event.c_str());
obj.getJsonVariant().asObject()["type"] = type;
return obj;
}
//
// g e t N e x t T o k e n
//
// Take a look at the state machine of getNextToken() to understand
// what is going on here.
//
// TODO: It seems to be useful that this function throws an exception
// if something goes wrong.
XmlToken DinoXmlScanner::getNextToken(){
// First skip whitespaces
m_pLineBuffer->skipWhitespace();
// Let's have a look at the current character
char currentCharacter = m_pLineBuffer->getCurrentCharacter();
// End of file reached
if (currentCharacter == EOF){
return endOfFile;
}
// First we handle single characters with a switch statement
switch (currentCharacter){
// Opening Bracket
case '<':
{
m_pLineBuffer->moveToNextCharacter();
return openingBracket;
}
break;
// Closing Bracket
case '>':
{
m_pLineBuffer->moveToNextCharacter();
return closingBracket;
}
break;
// Question Mark
case '?':
{
m_pLineBuffer->moveToNextCharacter();
return questionMark;
}
break;
// Exclamation Mark
case '!':
{
m_pLineBuffer->moveToNextCharacter();
return exclamationMark;
}
break;
// Minus
case '-':
{
m_pLineBuffer->moveToNextCharacter();
return minus;
}
break;
// Slash
case '/':
{
m_pLineBuffer->moveToNextCharacter();
return slash;
}
break;
// Equal Sign
case '=':
{
m_pLineBuffer->moveToNextCharacter();
return equalSign;
}
break;
} // end of switch
// Now we handle more complex token
// Identifier
if (isalpha(currentCharacter)){
// Put a pointer to the beginning of the identifier
DinoLineBufferPosition startPosition = m_pLineBuffer->getCurrentPosition();
currentCharacter = m_pLineBuffer->moveToNextCharacter();
// Read valid identifier characters
while ((isalnum(currentCharacter)) || // a..z|A..Z|0..9
(currentCharacter == '.') ||
(currentCharacter == ':') ||
(currentCharacter == '_'))
{
currentCharacter = m_pLineBuffer->moveToNextCharacter();
}
// Copy identifier to currentTokenString
m_pLineBuffer->extractString(startPosition,
m_pLineBuffer->getCurrentPosition(),
m_pCurrentTokenString);
// Return identifier token
return identifier;
} // end of identifier
// Quoted characters " ... " or ' ... '
if ((currentCharacter == '\"') ||
(currentCharacter == '\''))
{
// Distinguish what kind of quote sign we have
bool doubleQuote;
if (currentCharacter == '\"')
doubleQuote = true;
else
doubleQuote = false;
// Skip quote sign
currentCharacter = m_pLineBuffer->moveToNextCharacter();
// Read until the closing quotation sign is found
// String is copied to m_pCurrentTokenString by readStringUntil()
if (doubleQuote){
readStringUntil('\"', false);
}
else{
readStringUntil('\'', false);
}
// Skip over the end quote character
m_pLineBuffer->moveToNextCharacter();
// Return token for quoted value
return quotedValue;
} // end of quoted characters
// An atributeValue, i.e. a sequence of characters, digits, minus - or dot .
if ((isalnum(currentCharacter)) ||
(currentCharacter == '-') ||
(currentCharacter == '.'))
{
// Put a pointer to the beginning of the quoted text
DinoLineBufferPosition startPosition = m_pLineBuffer->getCurrentPosition();;
// Read until until an invalid character occurs
currentCharacter = m_pLineBuffer->moveToNextCharacter();
while ((isalnum(currentCharacter)) ||
(currentCharacter == '-') ||
(currentCharacter == '.'))
{
currentCharacter = m_pLineBuffer->moveToNextCharacter();
}
// Copy attributeValue to currentTokenString
m_pLineBuffer->extractString(startPosition,
m_pLineBuffer->getCurrentPosition(),
m_pCurrentTokenString);
// Return token for attribute value
return attributeValue;
} // end of an attributeValue
// No valid token
m_pLineBuffer->moveToNextCharacter();
return invalidToken;
} // getNextToken
void ArduinoOTAClass::_onRx(){
if(!_udp_ota->next()) return;
ip_addr_t ota_ip;
if (_state == OTA_IDLE) {
int cmd = parseInt();
if (cmd != U_FLASH && cmd != U_SPIFFS)
return;
_ota_ip = _udp_ota->getRemoteAddress();
_cmd = cmd;
_ota_port = parseInt();
_size = parseInt();
_udp_ota->read();
_md5 = readStringUntil('\n');
_md5.trim();
if(_md5.length() != 32)
return;
ota_ip.addr = (uint32_t)_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, _udp_ota->getRemotePort());
_state = OTA_WAITAUTH;
return;
} else {
_udp_ota->append("OK", 2);
_udp_ota->send(&ota_ip, _udp_ota->getRemotePort());
_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;
}
MD5Builder _passmd5;
_passmd5.begin();
_passmd5.add(_password);
_passmd5.calculate();
String passmd5 = _passmd5.toString();
String challenge = passmd5 + ":" + String(_nonce) + ":" + cnonce;
MD5Builder _challengemd5;
_challengemd5.begin();
_challengemd5.add(challenge);
_challengemd5.calculate();
String result = _challengemd5.toString();
ota_ip.addr = (uint32_t)_ota_ip;
if(result.equals(response)){
_udp_ota->append("OK", 2);
_udp_ota->send(&ota_ip, _udp_ota->getRemotePort());
_state = OTA_RUNUPDATE;
} else {
_udp_ota->append("Authentication Failed", 21);
_udp_ota->send(&ota_ip, _udp_ota->getRemotePort());
if (_error_callback) _error_callback(OTA_AUTH_ERROR);
_state = OTA_IDLE;
}
}
while(_udp_ota->next()) _udp_ota->flush();
}
