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// Copyright (c) 2011-2017 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#include <qt/signverifymessagedialog.h>
#include <qt/forms/ui_signverifymessagedialog.h>
#include <qt/addressbookpage.h>
#include <qt/guiutil.h>
#include <qt/platformstyle.h>
#include <qt/walletmodel.h>
#include <key_io.h>
#include <validation.h> // For strMessageMagic
#include <wallet/wallet.h>
#include <string>
#include <vector>
#include <QClipboard>
SignVerifyMessageDialog::SignVerifyMessageDialog(const PlatformStyle *_platformStyle, QWidget *parent) :
QDialog(parent),
ui(new Ui::SignVerifyMessageDialog),
model(0),
platformStyle(_platformStyle)
{
ui->setupUi(this);
ui->addressBookButton_SM->setIcon(platformStyle->SingleColorIcon(":/icons/address-book"));
ui->pasteButton_SM->setIcon(platformStyle->SingleColorIcon(":/icons/editpaste"));
ui->copySignatureButton_SM->setIcon(platformStyle->SingleColorIcon(":/icons/editcopy"));
ui->signMessageButton_SM->setIcon(platformStyle->SingleColorIcon(":/icons/edit"));
ui->clearButton_SM->setIcon(platformStyle->SingleColorIcon(":/icons/remove"));
ui->addressBookButton_VM->setIcon(platformStyle->SingleColorIcon(":/icons/address-book"));
ui->verifyMessageButton_VM->setIcon(platformStyle->SingleColorIcon(":/icons/transaction_0"));
ui->clearButton_VM->setIcon(platformStyle->SingleColorIcon(":/icons/remove"));
ui->signatureOut_SM->setPlaceholderText(tr("Click \"Sign Message\" to generate signature"));
GUIUtil::setupAddressWidget(ui->addressIn_SM, this);
GUIUtil::setupAddressWidget(ui->addressIn_VM, this);
ui->addressIn_SM->installEventFilter(this);
ui->messageIn_SM->installEventFilter(this);
ui->signatureOut_SM->installEventFilter(this);
ui->addressIn_VM->installEventFilter(this);
ui->messageIn_VM->installEventFilter(this);
ui->signatureIn_VM->installEventFilter(this);
ui->signatureOut_SM->setFont(GUIUtil::fixedPitchFont());
ui->signatureIn_VM->setFont(GUIUtil::fixedPitchFont());
}
SignVerifyMessageDialog::~SignVerifyMessageDialog()
{
delete ui;
}
void SignVerifyMessageDialog::setModel(WalletModel *_model)
{
this->model = _model;
}
void SignVerifyMessageDialog::setAddress_SM(const QString &address)
{
ui->addressIn_SM->setText(address);
ui->messageIn_SM->setFocus();
}
void SignVerifyMessageDialog::setAddress_VM(const QString &address)
{
ui->addressIn_VM->setText(address);
ui->messageIn_VM->setFocus();
}
void SignVerifyMessageDialog::showTab_SM(bool fShow)
{
ui->tabWidget->setCurrentIndex(0);
if (fShow)
this->show();
}
void SignVerifyMessageDialog::showTab_VM(bool fShow)
{
ui->tabWidget->setCurrentIndex(1);
if (fShow)
this->show();
}
void SignVerifyMessageDialog::on_addressBookButton_SM_clicked()
{
if (model && model->getAddressTableModel())
{
AddressBookPage dlg(platformStyle, AddressBookPage::ForSelection, AddressBookPage::ReceivingTab, this);
dlg.setModel(model->getAddressTableModel());
if (dlg.exec())
{
setAddress_SM(dlg.getReturnValue());
}
}
}
void SignVerifyMessageDialog::on_pasteButton_SM_clicked()
{
setAddress_SM(QApplication::clipboard()->text());
}
void SignVerifyMessageDialog::on_signMessageButton_SM_clicked()
{
if (!model)
return;
/* Clear old signature to ensure users don't get confused on error with an old signature displayed */
ui->signatureOut_SM->clear();
CTxDestination destination = DecodeDestination(ui->addressIn_SM->text().toStdString());
if (!IsValidDestination(destination)) {
ui->statusLabel_SM->setStyleSheet("QLabel { color: red; }");
ui->statusLabel_SM->setText(tr("The entered address is invalid.") + QString(" ") + tr("Please check the address and try again."));
return;
}
const CKeyID* keyID = boost::get<CKeyID>(&destination);
if (!keyID) {
ui->addressIn_SM->setValid(false);
ui->statusLabel_SM->setStyleSheet("QLabel { color: red; }");
ui->statusLabel_SM->setText(tr("The entered address does not refer to a key.") + QString(" ") + tr("Please check the address and try again."));
return;
}
WalletModel::UnlockContext ctx(model->requestUnlock());
if (!ctx.isValid())
{
ui->statusLabel_SM->setStyleSheet("QLabel { color: red; }");
ui->statusLabel_SM->setText(tr("Wallet unlock was cancelled."));
return;
}
CKey key;
if (!model->wallet().getPrivKey(*keyID, key))
{
ui->statusLabel_SM->setStyleSheet("QLabel { color: red; }");
ui->statusLabel_SM->setText(tr("Private key for the entered address is not available."));
return;
}
CHashWriter ss(SER_GETHASH, 0);
ss << strMessageMagic;
ss << ui->messageIn_SM->document()->toPlainText().toStdString();
std::vector<unsigned char> vchSig;
if (!key.SignCompact(ss.GetHash(), vchSig))
{
ui->statusLabel_SM->setStyleSheet("QLabel { color: red; }");
ui->statusLabel_SM->setText(QString("<nobr>") + tr("Message signing failed.") + QString("</nobr>"));
return;
}
ui->statusLabel_SM->setStyleSheet("QLabel { color: green; }");
ui->statusLabel_SM->setText(QString("<nobr>") + tr("Message signed.") + QString("</nobr>"));
ui->signatureOut_SM->setText(QString::fromStdString(EncodeBase64(vchSig.data(), vchSig.size())));
}
void SignVerifyMessageDialog::on_copySignatureButton_SM_clicked()
{
GUIUtil::setClipboard(ui->signatureOut_SM->text());
}
void SignVerifyMessageDialog::on_clearButton_SM_clicked()
{
ui->addressIn_SM->clear();
ui->messageIn_SM->clear();
ui->signatureOut_SM->clear();
ui->statusLabel_SM->clear();
ui->addressIn_SM->setFocus();
}
void SignVerifyMessageDialog::on_addressBookButton_VM_clicked()
{
if (model && model->getAddressTableModel())
{
AddressBookPage dlg(platformStyle, AddressBookPage::ForSelection, AddressBookPage::SendingTab, this);
dlg.setModel(model->getAddressTableModel());
if (dlg.exec())
{
setAddress_VM(dlg.getReturnValue());
}
}
}
void SignVerifyMessageDialog::on_verifyMessageButton_VM_clicked()
{
CTxDestination destination = DecodeDestination(ui->addressIn_VM->text().toStdString());
if (!IsValidDestination(destination)) {
ui->statusLabel_VM->setStyleSheet("QLabel { color: red; }");
ui->statusLabel_VM->setText(tr("The entered address is invalid.") + QString(" ") + tr("Please check the address and try again."));
return;
}
if (!boost::get<CKeyID>(&destination)) {
ui->addressIn_VM->setValid(false);
ui->statusLabel_VM->setStyleSheet("QLabel { color: red; }");
ui->statusLabel_VM->setText(tr("The entered address does not refer to a key.") + QString(" ") + tr("Please check the address and try again."));
return;
}
bool fInvalid = false;
std::vector<unsigned char> vchSig = DecodeBase64(ui->signatureIn_VM->text().toStdString().c_str(), &fInvalid);
if (fInvalid)
{
ui->signatureIn_VM->setValid(false);
ui->statusLabel_VM->setStyleSheet("QLabel { color: red; }");
ui->statusLabel_VM->setText(tr("The signature could not be decoded.") + QString(" ") + tr("Please check the signature and try again."));
return;
}
CHashWriter ss(SER_GETHASH, 0);
ss << strMessageMagic;
ss << ui->messageIn_VM->document()->toPlainText().toStdString();
CPubKey pubkey;
if (!pubkey.RecoverCompact(ss.GetHash(), vchSig))
{
ui->signatureIn_VM->setValid(false);
ui->statusLabel_VM->setStyleSheet("QLabel { color: red; }");
ui->statusLabel_VM->setText(tr("The signature did not match the message digest.") + QString(" ") + tr("Please check the signature and try again."));
return;
}
if (!(CTxDestination(pubkey.GetID()) == destination)) {
ui->statusLabel_VM->setStyleSheet("QLabel { color: red; }");
ui->statusLabel_VM->setText(QString("<nobr>") + tr("Message verification failed.") + QString("</nobr>"));
return;
}
ui->statusLabel_VM->setStyleSheet("QLabel { color: green; }");
ui->statusLabel_VM->setText(QString("<nobr>") + tr("Message verified.") + QString("</nobr>"));
}
void SignVerifyMessageDialog::on_clearButton_VM_clicked()
{
ui->addressIn_VM->clear();
ui->signatureIn_VM->clear();
ui->messageIn_VM->clear();
ui->statusLabel_VM->clear();
ui->addressIn_VM->setFocus();
}
bool SignVerifyMessageDialog::eventFilter(QObject *object, QEvent *event)
{
if (event->type() == QEvent::MouseButtonPress || event->type() == QEvent::FocusIn)
{
if (ui->tabWidget->currentIndex() == 0)
{
/* Clear status message on focus change */
ui->statusLabel_SM->clear();
/* Select generated signature */
if (object == ui->signatureOut_SM)
{
ui->signatureOut_SM->selectAll();
return true;
}
}
else if (ui->tabWidget->currentIndex() == 1)
{
/* Clear status message on focus change */
ui->statusLabel_VM->clear();
}
}
return QDialog::eventFilter(object, event);
}
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