void ProtocolAdmin::parsePacket(NetworkMessage& msg)
{
if (g_game.getGameState() == GAME_STATE_SHUTDOWN) {
getConnection()->closeConnection();
return;
}
uint8_t recvbyte = msg.GetByte();
OutputMessagePool* outputPool = OutputMessagePool::getInstance();
OutputMessage_ptr output = outputPool->getOutputMessage(this, false);
if (!output) {
return;
}
switch (m_state) {
case ENCRYPTION_NO_SET: {
if (g_adminConfig->requireEncryption()) {
if ((time(NULL) - m_startTime) > 30000) {
getConnection()->closeConnection();
addLogLine(this, LOGTYPE_WARNING, 1, "encryption timeout");
return;
}
if (recvbyte != AP_MSG_ENCRYPTION && recvbyte != AP_MSG_KEY_EXCHANGE) {
output->AddByte(AP_MSG_ERROR);
output->AddString("encryption needed");
outputPool->send(output);
getConnection()->closeConnection();
addLogLine(this, LOGTYPE_WARNING, 1, "wrong command while ENCRYPTION_NO_SET");
return;
}
break;
} else {
m_state = NO_LOGGED_IN;
}
}
case NO_LOGGED_IN: {
if (g_adminConfig->requireLogin()) {
if ((time(NULL) - m_startTime) > 30000) {
//login timeout
getConnection()->closeConnection();
addLogLine(this, LOGTYPE_WARNING, 1, "login timeout");
return;
}
if (m_loginTries > 3) {
output->AddByte(AP_MSG_ERROR);
output->AddString("too many login tries");
outputPool->send(output);
getConnection()->closeConnection();
addLogLine(this, LOGTYPE_WARNING, 1, "too many login tries");
return;
}
if (recvbyte != AP_MSG_LOGIN) {
output->AddByte(AP_MSG_ERROR);
output->AddString("you are not logged in");
outputPool->send(output);
getConnection()->closeConnection();
addLogLine(this, LOGTYPE_WARNING, 1, "wrong command while NO_LOGGED_IN");
return;
}
break;
} else {
m_state = LOGGED_IN;
}
}
case LOGGED_IN: {
//can execute commands
break;
}
default: {
getConnection()->closeConnection();
return;
}
}
m_lastCommand = time(NULL);
switch (recvbyte) {
case AP_MSG_LOGIN: {
if (m_state == NO_LOGGED_IN && g_adminConfig->requireLogin()) {
std::string password = msg.GetString();
if (g_adminConfig->passwordMatch(password)) {
m_state = LOGGED_IN;
output->AddByte(AP_MSG_LOGIN_OK);
addLogLine(this, LOGTYPE_EVENT, 1, "login ok");
} else {
m_loginTries++;
output->AddByte(AP_MSG_LOGIN_FAILED);
output->AddString("wrong password");
addLogLine(this, LOGTYPE_WARNING, 1, "login failed.(" + password + ")");
}
} else {
output->AddByte(AP_MSG_LOGIN_FAILED);
output->AddString("can not login");
addLogLine(this, LOGTYPE_WARNING, 1, "wrong state at login");
}
break;
}
case AP_MSG_ENCRYPTION: {
if (m_state == ENCRYPTION_NO_SET && g_adminConfig->requireEncryption()) {
uint8_t keyType = msg.GetByte();
if (keyType == ENCRYPTION_RSA1024XTEA) {
RSA* rsa = g_adminConfig->getRSAKey(ENCRYPTION_RSA1024XTEA);
if (!rsa) {
output->AddByte(AP_MSG_ENCRYPTION_FAILED);
addLogLine(this, LOGTYPE_WARNING, 1, "no valid server key type");
break;
}
if (RSA_decrypt(rsa, msg)) {
m_state = NO_LOGGED_IN;
uint32_t k[4];
k[0] = msg.GetU32();
k[1] = msg.GetU32();
k[2] = msg.GetU32();
k[3] = msg.GetU32();
//use for in/out the new key we have
enableXTEAEncryption();
setXTEAKey(k);
output->AddByte(AP_MSG_ENCRYPTION_OK);
addLogLine(this, LOGTYPE_EVENT, 1, "encryption ok");
} else {
output->AddByte(AP_MSG_ENCRYPTION_FAILED);
output->AddString("wrong encrypted packet");
addLogLine(this, LOGTYPE_WARNING, 1, "wrong encrypted packet");
}
} else {
output->AddByte(AP_MSG_ENCRYPTION_FAILED);
output->AddString("no valid key type");
addLogLine(this, LOGTYPE_WARNING, 1, "no valid client key type");
}
} else {
output->AddByte(AP_MSG_ENCRYPTION_FAILED);
output->AddString("can not set encryption");
addLogLine(this, LOGTYPE_EVENT, 1, "can not set encryption");
}
break;
}
case AP_MSG_KEY_EXCHANGE: {
if (m_state == ENCRYPTION_NO_SET && g_adminConfig->requireEncryption()) {
uint8_t keyType = msg.GetByte();
if (keyType == ENCRYPTION_RSA1024XTEA) {
RSA* rsa = g_adminConfig->getRSAKey(ENCRYPTION_RSA1024XTEA);
if (!rsa) {
output->AddByte(AP_MSG_KEY_EXCHANGE_FAILED);
addLogLine(this, LOGTYPE_WARNING, 1, "no valid server key type");
break;
}
output->AddByte(AP_MSG_KEY_EXCHANGE_OK);
output->AddByte(ENCRYPTION_RSA1024XTEA);
char RSAPublicKey[128];
rsa->getPublicKey(RSAPublicKey);
output->AddBytes(RSAPublicKey, 128);
} else {
output->AddByte(AP_MSG_KEY_EXCHANGE_FAILED);
addLogLine(this, LOGTYPE_WARNING, 1, "no valid client key type");
}
} else {
output->AddByte(AP_MSG_KEY_EXCHANGE_FAILED);
output->AddString("can not get public key");
addLogLine(this, LOGTYPE_WARNING, 1, "can not get public key");
}
break;
}
case AP_MSG_COMMAND: {
if (m_state != LOGGED_IN) {
addLogLine(this, LOGTYPE_ERROR, 1, "recvbyte == AP_MSG_COMMAND && m_state != LOGGED_IN !!!");
// We should never reach this point
break;
}
uint8_t command = msg.GetByte();
switch (command) {
case CMD_BROADCAST: {
const std::string message = msg.GetString();
addLogLine(this, LOGTYPE_EVENT, 1, "broadcast: " + message);
g_dispatcher.addTask(createTask(boost::bind(&Game::broadcastMessage, &g_game, message, MSG_STATUS_WARNING)));
output->AddByte(AP_MSG_COMMAND_OK);
break;
}
case CMD_CLOSE_SERVER: {
g_dispatcher.addTask(createTask(boost::bind(&ProtocolAdmin::adminCommandCloseServer, this)));
break;
}
case CMD_PAY_HOUSES: {
g_dispatcher.addTask(createTask(boost::bind(&ProtocolAdmin::adminCommandPayHouses, this)));
break;
}
case CMD_OPEN_SERVER: {
g_dispatcher.addTask(createTask(boost::bind(&ProtocolAdmin::adminCommandOpenServer, this)));
break;
}
case CMD_SHUTDOWN_SERVER: {
g_dispatcher.addTask(createTask(boost::bind(&ProtocolAdmin::adminCommandShutdownServer, this)));
getConnection()->closeConnection();
return;
}
case CMD_KICK: {
const std::string name = msg.GetString();
g_dispatcher.addTask(createTask(boost::bind(&ProtocolAdmin::adminCommandKickPlayer, this, name)));
break;
}
case CMD_SETOWNER: {
const std::string param = msg.GetString();
g_dispatcher.addTask(createTask(boost::bind(&ProtocolAdmin::adminCommandSetOwner, this, param)));
break;
}
default: {
output->AddByte(AP_MSG_COMMAND_FAILED);
output->AddString("not known server command");
addLogLine(this, LOGTYPE_WARNING, 1, "not known server command");
break;
}
}
break;
}
case AP_MSG_PING: {
output->AddByte(AP_MSG_PING_OK);
break;
}
default: {
output->AddByte(AP_MSG_ERROR);
output->AddString("not known command byte");
addLogLine(this, LOGTYPE_WARNING, 1, "not known command byte");
break;
}
}
if (output->getMessageLength() > 0) {
outputPool->send(output);
}
}
