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577 lines
19 KiB
577 lines
19 KiB
#include "websockets.h"
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#include "rpc.h"
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#include "settings.h"
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#include "ui_mobileappconnector.h"
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#include "version.h"
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WSServer::WSServer(quint16 port, bool debug, QObject *parent) :
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QObject(parent),
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m_pWebSocketServer(new QWebSocketServer(QStringLiteral("Direct Connection Server"),
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QWebSocketServer::NonSecureMode, this)),
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m_debug(debug)
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{
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m_mainWindow = (MainWindow *) parent;
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if (m_pWebSocketServer->listen(QHostAddress::AnyIPv4, port)) {
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if (m_debug)
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qDebug() << "Echoserver listening on port" << port;
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connect(m_pWebSocketServer, &QWebSocketServer::newConnection,
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this, &WSServer::onNewConnection);
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connect(m_pWebSocketServer, &QWebSocketServer::closed, this, &WSServer::closed);
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}
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}
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WSServer::~WSServer()
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{
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qDebug() << "Closing websocket";
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m_pWebSocketServer->close();
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qDeleteAll(m_clients.begin(), m_clients.end());
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}
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void WSServer::onNewConnection()
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{
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QWebSocket *pSocket = m_pWebSocketServer->nextPendingConnection();
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connect(pSocket, &QWebSocket::textMessageReceived, this, &WSServer::processTextMessage);
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connect(pSocket, &QWebSocket::binaryMessageReceived, this, &WSServer::processBinaryMessage);
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connect(pSocket, &QWebSocket::disconnected, this, &WSServer::socketDisconnected);
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m_clients << pSocket;
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}
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void WSServer::processTextMessage(QString message)
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{
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QWebSocket *pClient = qobject_cast<QWebSocket *>(sender());
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if (m_debug)
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qDebug() << "Message received:" << message;
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if (pClient) {
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AppDataServer::processMessage(message, m_mainWindow, pClient);
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}
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}
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void WSServer::processBinaryMessage(QByteArray message)
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{
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QWebSocket *pClient = qobject_cast<QWebSocket *>(sender());
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if (m_debug)
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qDebug() << "Binary Message received:" << message;
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if (pClient) {
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pClient->sendBinaryMessage(message);
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}
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}
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void WSServer::socketDisconnected()
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{
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QWebSocket *pClient = qobject_cast<QWebSocket *>(sender());
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if (m_debug)
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qDebug() << "socketDisconnected:" << pClient;
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if (pClient) {
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m_clients.removeAll(pClient);
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pClient->deleteLater();
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}
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}
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// ==============================
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// AppDataServer
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// ==============================
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QString AppDataServer::getSecretHex() {
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QSettings s;
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return s.value("mobileapp/secret", "").toString();
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}
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void AppDataServer::saveNewSecret(QString secretHex) {
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QSettings s;
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s.setValue("mobileapp/secret", secretHex);
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s.sync();
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}
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QString AppDataServer::tempSecret = "";
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Ui_MobileAppConnector* AppDataServer::ui = nullptr;
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void AppDataServer::connectAppDialog(QWidget* parent) {
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QDialog d(parent);
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ui = new Ui_MobileAppConnector();
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ui->setupUi(&d);
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Settings::saveRestore(&d);
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updateUIWithNewQRCode();
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updateConnectedUI();
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QObject::connect(ui->btnDisconnect, &QPushButton::clicked, [=] () {
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QSettings().setValue("mobileapp/connectedname", "");
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saveNewSecret("");
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updateConnectedUI();
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});
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d.exec();
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// Cleanup
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tempSecret = "";
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delete ui;
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ui = nullptr;
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}
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void AppDataServer::updateUIWithNewQRCode() {
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// Get the address of the localhost
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auto addrList = QNetworkInterface::allAddresses();
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// Find a suitable address
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QString ipv4Addr;
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for (auto addr : addrList) {
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if (addr.isLoopback() || addr.protocol() == QAbstractSocket::IPv6Protocol)
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continue;
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ipv4Addr = addr.toString();
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break;
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}
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if (ipv4Addr.isEmpty())
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return;
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QString uri = "ws://" + ipv4Addr + ":8237";
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// Get a new secret
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unsigned char* secretBin = new unsigned char[crypto_secretbox_KEYBYTES];
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randombytes_buf(secretBin, crypto_secretbox_KEYBYTES);
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char* secretHex = new char[crypto_secretbox_KEYBYTES*2 + 1];
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sodium_bin2hex(secretHex, crypto_secretbox_KEYBYTES*2+1, secretBin, crypto_secretbox_KEYBYTES);
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QString secretStr(secretHex);
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tempSecret = secretStr;
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QString codeStr = uri + "," + secretStr;
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ui->qrcode->setQrcodeString(codeStr);
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ui->txtConnStr->setText(codeStr);
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}
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void AppDataServer::updateConnectedUI() {
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if (ui == nullptr)
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return;
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auto remoteName = QSettings().value("mobileapp/connectedname", "").toString();
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ui->lblRemoteName->setText(remoteName.isEmpty() ? "(Not connected to any device)" : remoteName);
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ui->btnDisconnect->setEnabled(!remoteName.isEmpty());
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}
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QString AppDataServer::getNonceHex(NonceType nt) {
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QSettings s;
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QString hex;
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if (nt == NonceType::LOCAL) {
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// The default local nonce starts from 1, to always keep it odd
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auto defaultLocalNonce = "01" + QString("00").repeated(crypto_secretbox_NONCEBYTES-1);
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hex = s.value("mobileapp/localnonce", defaultLocalNonce).toString();
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}
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else {
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hex = s.value("mobileapp/remotenonce", QString("00").repeated(crypto_secretbox_NONCEBYTES)).toString();
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}
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return hex;
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}
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void AppDataServer::saveNonceHex(NonceType nt, QString noncehex) {
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QSettings s;
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assert(noncehex.length() == crypto_secretbox_NONCEBYTES * 2);
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if (nt == NonceType::LOCAL) {
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s.setValue("mobileapp/localnonce", noncehex);
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}
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else {
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s.setValue("mobileapp/remotenonce", noncehex);
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}
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s.sync();
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}
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QString AppDataServer::encryptOutgoing(QString msg) {
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if (msg.length() % 256 > 0) {
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msg = msg + QString(" ").repeated(256 - (msg.length() % 256));
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}
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QString localNonceHex = getNonceHex(NonceType::LOCAL);
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unsigned char* noncebin = new unsigned char[crypto_secretbox_NONCEBYTES];
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sodium_hex2bin(noncebin, crypto_secretbox_NONCEBYTES, localNonceHex.toStdString().c_str(), localNonceHex.length(),
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NULL, NULL, NULL);
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// Increment the nonce +2 and save
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sodium_increment(noncebin, crypto_secretbox_NONCEBYTES);
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sodium_increment(noncebin, crypto_secretbox_NONCEBYTES);
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char* newLocalNonce = new char[crypto_secretbox_NONCEBYTES*2 + 1];
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sodium_memzero(newLocalNonce, crypto_secretbox_NONCEBYTES*2 + 1);
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sodium_bin2hex(newLocalNonce, crypto_secretbox_NONCEBYTES*2+1, noncebin, crypto_box_NONCEBYTES);
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qDebug() << "Local nonce was " << localNonceHex << " now is " << QString(newLocalNonce);
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saveNonceHex(NonceType::LOCAL, QString(newLocalNonce));
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unsigned char* secret = new unsigned char[crypto_secretbox_KEYBYTES];
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sodium_hex2bin(secret, crypto_secretbox_KEYBYTES, getSecretHex().toStdString().c_str(), crypto_secretbox_KEYBYTES*2,
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NULL, NULL, NULL);
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int msgSize = strlen(msg.toStdString().c_str());
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unsigned char* encrpyted = new unsigned char[ msgSize + crypto_secretbox_MACBYTES];
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crypto_secretbox_easy(encrpyted, (const unsigned char *)msg.toStdString().c_str(), msgSize, noncebin, secret);
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int encryptedHexSize = (msgSize + crypto_secretbox_MACBYTES) * 2 + 1;
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char * encryptedHex = new char[encryptedHexSize];
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sodium_memzero(encryptedHex, encryptedHexSize);
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sodium_bin2hex(encryptedHex, encryptedHexSize, encrpyted, msgSize + crypto_secretbox_MACBYTES);
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qDebug() << "Encrypted to " << QString(encryptedHex);
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auto json = QJsonDocument(QJsonObject{
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{"nonce", QString(newLocalNonce)},
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{"payload", QString(encryptedHex)}
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});
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delete[] noncebin;
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delete[] newLocalNonce;
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delete[] secret;
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delete[] encrpyted;
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delete[] encryptedHex;
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return json.toJson();
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}
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QString AppDataServer::decryptMessage(QJsonDocument msg, QString secretHex, bool skipNonceCheck) {
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// Decrypt and then process
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QString noncehex = msg.object().value("nonce").toString();
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QString encryptedhex = msg.object().value("payload").toString();
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// Enforce limits on the size of the message
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if (noncehex.length() > ((int)crypto_secretbox_NONCEBYTES * 2) ||
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encryptedhex.length() > 2 * 50 * 1024 /*50kb*/) {
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return "error";
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}
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// Check to make sure that the nonce is greater than the last known remote nonce
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QString lastRemoteHex = getNonceHex(NonceType::REMOTE);
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unsigned char* lastRemoteBin = new unsigned char[crypto_secretbox_NONCEBYTES];
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sodium_hex2bin(lastRemoteBin, crypto_secretbox_NONCEBYTES, lastRemoteHex.toStdString().c_str(), lastRemoteHex.length(),
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NULL, NULL, NULL);
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unsigned char* noncebin = new unsigned char[crypto_secretbox_NONCEBYTES];
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sodium_hex2bin(noncebin, crypto_secretbox_NONCEBYTES, noncehex.toStdString().c_str(), noncehex.length(),
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NULL, NULL, NULL);
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assert(crypto_secretbox_KEYBYTES == crypto_hash_sha256_BYTES);
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if (!skipNonceCheck) {
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if (sodium_compare(lastRemoteBin, noncebin, crypto_secretbox_NONCEBYTES) != -1) {
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// Refuse to accept a lower nonce, return an error
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delete[] lastRemoteBin;
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delete[] noncebin;
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return "error";
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}
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}
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unsigned char* secret = new unsigned char[crypto_secretbox_KEYBYTES];
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sodium_hex2bin(secret, crypto_secretbox_KEYBYTES, secretHex.toStdString().c_str(), crypto_secretbox_KEYBYTES*2,
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NULL, NULL, NULL);
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unsigned char* encrypted = new unsigned char[encryptedhex.length() / 2];
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sodium_hex2bin(encrypted, encryptedhex.length() / 2, encryptedhex.toStdString().c_str(), encryptedhex.length(),
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NULL, NULL, NULL);
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int decryptedLen = encryptedhex.length() / 2 - crypto_secretbox_MACBYTES;
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unsigned char* decrypted = new unsigned char[decryptedLen];
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int result = crypto_secretbox_open_easy(decrypted, encrypted, encryptedhex.length() / 2, noncebin, secret);
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QString payload;
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if (result == -1) {
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payload = "error";
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} else {
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// Update the last seen remote hex
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saveNonceHex(NonceType::REMOTE, noncehex);
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char* decryptedStr = new char[decryptedLen + 1];
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sodium_memzero(decryptedStr, decryptedLen + 1);
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memcpy(decryptedStr, decrypted, decryptedLen);
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payload = QString(decryptedStr);
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qDebug() << "Decrypted to: " << payload;
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delete[] decryptedStr;
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}
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delete[] secret;
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delete[] lastRemoteBin;
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delete[] noncebin;
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delete[] encrypted;
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delete[] decrypted;
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return payload;
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}
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void AppDataServer::processMessage(QString message, MainWindow* mainWindow, QWebSocket* pClient) {
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// First, extract the command from the message
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auto msg = QJsonDocument::fromJson(message.toUtf8());
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// First check if the message is encrpted
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if (!msg.object().contains("nonce")) {
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// TODO: Log error?
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return;
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}
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auto decrypted = decryptMessage(msg, getSecretHex());
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// If the decryption failed, maybe this is a new connection, so see if the dialog is open and a
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// temp secret is in place
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auto replyWithError = [=]() {
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auto r = QJsonDocument(QJsonObject{
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{"error", "Encryption error"}
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}).toJson();
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pClient->sendTextMessage(r);
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return;
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};
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if (decrypted == "error") {
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// If the dialog is open, then there might be a temporary, new secret key. Attempt to decrypt
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// with that.
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if (!tempSecret.isEmpty()) {
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decrypted = decryptMessage(msg, tempSecret, true);
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if (decrypted == "error") {
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// Oh, well. Just return an error
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replyWithError();
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return;
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}
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else {
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// This is a new connection. So, update the remote nonce (to accept any nonce) and the secret
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saveNewSecret(tempSecret);
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AppDataServer::saveNonceHex(NonceType::REMOTE, QString("00").repeated(24));
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processDecryptedMessage(decrypted, mainWindow, pClient);
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// If the Connection UI is showing, we have to update the UI as well
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if (ui != nullptr) {
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// Update the connected phone information
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updateConnectedUI();
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// Update with a new QR Code for safety, so this secret isn't used by anyone else
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updateUIWithNewQRCode();
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}
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}
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}
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else {
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replyWithError();
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}
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} else {
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processDecryptedMessage(decrypted, mainWindow, pClient);
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}
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}
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void AppDataServer::processDecryptedMessage(QString message, MainWindow* mainWindow, QWebSocket* pClient) {
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// First, extract the command from the message
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auto msg = QJsonDocument::fromJson(message.toUtf8());
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if (!msg.object().contains("command")) {
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auto r = QJsonDocument(QJsonObject{
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{"errorCode", -1},
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{"errorMessage", "Unknown JSON format"}
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}).toJson();
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pClient->sendTextMessage(encryptOutgoing(r));
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return;
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}
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if (msg.object()["command"] == "getInfo") {
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processGetInfo(msg.object(), mainWindow, pClient);
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}
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else if (msg.object()["command"] == "getTransactions") {
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processGetTransactions(mainWindow, pClient);
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}
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else if (msg.object()["command"] == "sendTx") {
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processSendTx(msg.object()["tx"].toObject(), mainWindow, pClient);
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}
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else {
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auto r = QJsonDocument(QJsonObject{
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{"errorCode", -1},
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{"errorMessage", "Command not found:" + msg.object()["command"].toString()}
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}).toJson();
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pClient->sendTextMessage(encryptOutgoing(r));
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}
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}
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void AppDataServer::processSendTx(QJsonObject sendTx, MainWindow* mainwindow, QWebSocket* pClient) {
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auto error = [=](QString reason) {
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auto r = QJsonDocument(QJsonObject{
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{"errorCode", -1},
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{"errorMessage", "Couldn't send Tx:" + reason}
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}).toJson();
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pClient->sendTextMessage(encryptOutgoing(r));
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return;
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};
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// Refuse to send if the node is still syncing
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if (Settings::getInstance()->isSyncing()) {
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error(QObject::tr("Node is still syncing."));
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return;
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}
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// Create a Tx Object
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Tx tx;
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tx.fee = Settings::getMinerFee();
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// Find a from address that has at least the sending amout
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double amt = sendTx["amount"].toString().toDouble();
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auto allBalances = mainwindow->getRPC()->getAllBalances();
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QList<QPair<QString, double>> bals;
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for (auto i : allBalances->keys()) {
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// Filter out sprout addresses
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if (Settings::getInstance()->isSproutAddress(i))
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continue;
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// Filter out balances that don't have the requisite amount
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if (allBalances->value(i) < amt)
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continue;
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bals.append(QPair<QString, double>(i, allBalances->value(i)));
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}
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if (bals.isEmpty()) {
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error(QObject::tr("No sapling or transparent addresses with enough balance to spend."));
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return;
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}
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std::sort(bals.begin(), bals.end(), [=](const QPair<QString, double>a, const QPair<QString, double> b) -> bool {
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// Sort z addresses first
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return a.first > b.first;
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});
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tx.fromAddr = bals[0].first;
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tx.toAddrs = { ToFields{ sendTx["to"].toString(), amt, sendTx["memo"].toString(), sendTx["memo"].toString().toUtf8().toHex()} };
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// TODO: Respect the autoshield change setting
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QString validation = mainwindow->doSendTxValidations(tx);
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if (!validation.isEmpty()) {
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error(validation);
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return;
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}
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json params = json::array();
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mainwindow->getRPC()->fillTxJsonParams(params, tx);
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std::cout << std::setw(2) << params << std::endl;
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// And send the Tx
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mainwindow->getRPC()->executeTransaction(tx,
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[=] (QString) {},
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// Submitted Tx successfully
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[=] (QString, QString txid) {
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auto r = QJsonDocument(QJsonObject{
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{"version", 1.0},
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{"command", "sendTxSubmitted"},
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{"txid", txid}
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}).toJson();
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if (pClient->isValid())
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pClient->sendTextMessage(encryptOutgoing(r));
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},
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// Errored while submitting Tx
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[=] (QString, QString errStr) {
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auto r = QJsonDocument(QJsonObject{
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{"version", 1.0},
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{"command", "sendTxFailed"},
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{"err", errStr}
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}).toJson();
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if (pClient->isValid())
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pClient->sendTextMessage(encryptOutgoing(r));
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}
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);
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auto r = QJsonDocument(QJsonObject{
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{"version", 1.0},
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{"command", "sendTx"},
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{"result", "success"}
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}).toJson();
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pClient->sendTextMessage(encryptOutgoing(r));
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}
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void AppDataServer::processGetInfo(QJsonObject jobj, MainWindow* mainWindow, QWebSocket* pClient) {
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auto connectedName = jobj["name"].toString();
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if (mainWindow == nullptr || mainWindow->getRPC() == nullptr ||
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mainWindow->getRPC()->getAllBalances() == nullptr) {
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pClient->close(QWebSocketProtocol::CloseCodeNormal, "Not yet ready");
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return;
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}
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// Max spendable safely from a z address and from any address
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double maxZSpendable = 0;
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|
double maxSpendable = 0;
|
|
for (auto a : mainWindow->getRPC()->getAllBalances()->keys()) {
|
|
if (Settings::getInstance()->isSaplingAddress(a)) {
|
|
if (mainWindow->getRPC()->getAllBalances()->value(a) > maxZSpendable) {
|
|
maxZSpendable = mainWindow->getRPC()->getAllBalances()->value(a);
|
|
}
|
|
}
|
|
if (mainWindow->getRPC()->getAllBalances()->value(a) > maxSpendable) {
|
|
maxSpendable = mainWindow->getRPC()->getAllBalances()->value(a);
|
|
}
|
|
}
|
|
|
|
{
|
|
QSettings s;
|
|
s.setValue("mobileapp/connectedname", connectedName);
|
|
}
|
|
|
|
auto r = QJsonDocument(QJsonObject{
|
|
{"version", 1.0},
|
|
{"command", "getInfo"},
|
|
{"saplingAddress", mainWindow->getRPC()->getDefaultSaplingAddress()},
|
|
{"tAddress", mainWindow->getRPC()->getDefaultTAddress()},
|
|
{"balance", AppDataModel::getInstance()->getTotalBalance()},
|
|
{"maxspendable", maxSpendable},
|
|
{"maxzspendable", maxZSpendable},
|
|
{"tokenName", Settings::getTokenName()},
|
|
{"zecprice", Settings::getInstance()->getZECPrice()},
|
|
{"serverversion", QString(APP_VERSION)}
|
|
}).toJson();
|
|
pClient->sendTextMessage(encryptOutgoing(r));
|
|
}
|
|
|
|
void AppDataServer::processGetTransactions(MainWindow* mainWindow, QWebSocket* pClient) {
|
|
QJsonArray txns;
|
|
auto model = mainWindow->getRPC()->getTransactionsModel();
|
|
|
|
// Manually add pending ops, so that computing transactions will also show up
|
|
auto wtxns = mainWindow->getRPC()->getWatchingTxns();
|
|
for (auto opid : wtxns.keys()) {
|
|
txns.append(QJsonObject{
|
|
{"type", "send"},
|
|
{"datetime", QDateTime::currentSecsSinceEpoch()},
|
|
{"amount", Settings::getDecimalString(wtxns[opid].tx.toAddrs[0].amount)},
|
|
{"txid", ""},
|
|
{"address", wtxns[opid].tx.toAddrs[0].addr},
|
|
{"memo", wtxns[opid].tx.toAddrs[0].txtMemo},
|
|
{"confirmations", 0}
|
|
});
|
|
}
|
|
|
|
// Add transactions
|
|
for (int i = 0; i < model->rowCount(QModelIndex()) && i < Settings::getMaxMobileAppTxns(); i++) {
|
|
txns.append(QJsonObject{
|
|
{"type", model->getType(i)},
|
|
{"datetime", model->getDate(i)},
|
|
{"amount", model->getAmt(i)},
|
|
{"txid", model->getTxId(i)},
|
|
{"address", model->getAddr(i)},
|
|
{"memo", model->getMemo(i)},
|
|
{"confirmations", model->getConfirmations(i)}
|
|
});
|
|
}
|
|
|
|
auto r = QJsonDocument(QJsonObject{
|
|
{"version", 1.0},
|
|
{"command", "getTransactions"},
|
|
{"transactions", txns}
|
|
}).toJson();
|
|
pClient->sendTextMessage(encryptOutgoing(r));
|
|
}
|
|
|
|
// ==============================
|
|
// AppDataModel
|
|
// ==============================
|
|
AppDataModel* AppDataModel::instance = NULL;
|
|
|