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336 lines
10 KiB
336 lines
10 KiB
/*
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This file is part of cpp-ethereum.
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cpp-ethereum is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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cpp-ethereum is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
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*/
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/** @file Transact.cpp
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* @author Gav Wood <i@gavwood.com>
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* @date 2015
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*/
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#include "Transact.h"
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#include <fstream>
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#include <QFileDialog>
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#include <QMessageBox>
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#include <liblll/Compiler.h>
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#include <liblll/CodeFragment.h>
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#include <libsolidity/CompilerStack.h>
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#include <libsolidity/Scanner.h>
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#include <libsolidity/AST.h>
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#include <libsolidity/SourceReferenceFormatter.h>
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#include <libnatspec/NatspecExpressionEvaluator.h>
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#include <libethereum/Client.h>
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#include <libethereum/Utility.h>
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#ifndef _MSC_VER
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#include <libserpent/funcs.h>
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#include <libserpent/util.h>
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#endif
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#include "Debugger.h"
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#include "ui_Transact.h"
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using namespace std;
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using namespace dev;
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using namespace dev::eth;
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Transact::Transact(Context* _c, QWidget* _parent):
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QDialog(_parent),
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ui(new Ui::Transact),
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m_context(_c)
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{
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ui->setupUi(this);
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initUnits(ui->gasPriceUnits);
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initUnits(ui->valueUnits);
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ui->valueUnits->setCurrentIndex(6);
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ui->gasPriceUnits->setCurrentIndex(4);
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ui->gasPrice->setValue(10);
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on_destination_currentTextChanged();
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}
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Transact::~Transact()
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{
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delete ui;
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}
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void Transact::setEnvironment(QList<dev::KeyPair> _myKeys, dev::eth::Client* _eth, NatSpecFace* _natSpecDB)
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{
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m_myKeys = _myKeys;
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m_ethereum = _eth;
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m_natSpecDB = _natSpecDB;
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}
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bool Transact::isCreation() const
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{
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return ui->destination->currentText().isEmpty() || ui->destination->currentText() == "(Create Contract)";
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}
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u256 Transact::fee() const
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{
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return ui->gas->value() * gasPrice();
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}
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u256 Transact::value() const
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{
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if (ui->valueUnits->currentIndex() == -1)
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return 0;
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return ui->value->value() * units()[units().size() - 1 - ui->valueUnits->currentIndex()].first;
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}
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u256 Transact::gasPrice() const
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{
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if (ui->gasPriceUnits->currentIndex() == -1)
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return 0;
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return ui->gasPrice->value() * units()[units().size() - 1 - ui->gasPriceUnits->currentIndex()].first;
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}
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u256 Transact::total() const
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{
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return value() + fee();
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}
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void Transact::updateDestination()
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{
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cwatch << "updateDestination()";
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QString s;
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for (auto i: ethereum()->addresses())
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if ((s = m_context->pretty(i)).size())
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// A namereg address
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if (ui->destination->findText(s, Qt::MatchExactly | Qt::MatchCaseSensitive) == -1)
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ui->destination->addItem(s);
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for (int i = 0; i < ui->destination->count(); ++i)
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if (ui->destination->itemText(i) != "(Create Contract)" && !m_context->fromString(ui->destination->itemText(i)))
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ui->destination->removeItem(i--);
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}
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void Transact::updateFee()
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{
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ui->fee->setText(QString("(gas sub-total: %1)").arg(formatBalance(fee()).c_str()));
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auto totalReq = total();
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ui->total->setText(QString("Total: %1").arg(formatBalance(totalReq).c_str()));
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bool ok = false;
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for (auto i: m_myKeys)
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if (ethereum()->balanceAt(i.address()) >= totalReq)
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{
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ok = true;
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break;
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}
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ui->send->setEnabled(ok);
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QPalette p = ui->total->palette();
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p.setColor(QPalette::WindowText, QColor(ok ? 0x00 : 0x80, 0x00, 0x00));
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ui->total->setPalette(p);
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}
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string Transact::getFunctionHashes(dev::solidity::CompilerStack const& _compiler, string const& _contractName)
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{
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string ret = "";
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auto const& contract = _compiler.getContractDefinition(_contractName);
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auto interfaceFunctions = contract.getInterfaceFunctions();
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for (auto const& it: interfaceFunctions)
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{
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ret += it.first.abridged();
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ret += " :";
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ret += it.second->getDeclaration().getName() + "\n";
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}
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return ret;
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}
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void Transact::on_destination_currentTextChanged()
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{
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if (ui->destination->currentText().size() && ui->destination->currentText() != "(Create Contract)")
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if (Address a = m_context->fromString(ui->destination->currentText()))
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ui->calculatedName->setText(m_context->render(a));
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else
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ui->calculatedName->setText("Unknown Address");
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else
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ui->calculatedName->setText("Create Contract");
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rejigData();
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// updateFee();
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}
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void Transact::rejigData()
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{
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if (isCreation())
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{
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string src = ui->data->toPlainText().toStdString();
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vector<string> errors;
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QString lll;
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QString solidity;
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if (src.find_first_not_of("1234567890abcdefABCDEF") == string::npos && src.size() % 2 == 0)
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{
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m_data = fromHex(src);
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}
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else if (sourceIsSolidity(src))
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{
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dev::solidity::CompilerStack compiler;
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try
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{
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// compiler.addSources(dev::solidity::StandardSources);
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m_data = compiler.compile(src, ui->optimize->isChecked());
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solidity = "<h4>Solidity</h4>";
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solidity += "<pre>var " + QString::fromStdString(compiler.defaultContractName()) + " = web3.eth.contractFromAbi(" + QString::fromStdString(compiler.getInterface()).replace(QRegExp("\\s"), "").toHtmlEscaped() + ");</pre>";
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solidity += "<pre>" + QString::fromStdString(compiler.getSolidityInterface()).toHtmlEscaped() + "</pre>";
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solidity += "<pre>" + QString::fromStdString(getFunctionHashes(compiler)).toHtmlEscaped() + "</pre>";
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}
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catch (dev::Exception const& exception)
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{
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ostringstream error;
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solidity::SourceReferenceFormatter::printExceptionInformation(error, exception, "Error", compiler);
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solidity = "<h4>Solidity</h4><pre>" + QString::fromStdString(error.str()).toHtmlEscaped() + "</pre>";
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}
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catch (...)
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{
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solidity = "<h4>Solidity</h4><pre>Uncaught exception.</pre>";
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}
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}
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#ifndef _MSC_VER
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else if (sourceIsSerpent(src))
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{
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try
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{
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m_data = dev::asBytes(::compile(src));
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for (auto& i: errors)
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i = "(LLL " + i + ")";
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}
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catch (string err)
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{
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errors.push_back("Serpent " + err);
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}
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}
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#endif
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else
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{
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m_data = compileLLL(src, ui->optimize->isChecked(), &errors);
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if (errors.empty())
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{
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auto asmcode = compileLLLToAsm(src, false);
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lll = "<h4>Pre</h4><pre>" + QString::fromStdString(asmcode).toHtmlEscaped() + "</pre>";
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if (ui->optimize->isChecked())
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{
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asmcode = compileLLLToAsm(src, true);
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lll = "<h4>Opt</h4><pre>" + QString::fromStdString(asmcode).toHtmlEscaped() + "</pre>" + lll;
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}
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}
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}
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QString errs;
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if (errors.size())
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{
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errs = "<h4>Errors</h4>";
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for (auto const& i: errors)
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errs.append("<div style=\"border-left: 6px solid #c00; margin-top: 2px\">" + QString::fromStdString(i).toHtmlEscaped() + "</div>");
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}
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ui->code->setHtml(errs + lll + solidity + "<h4>Code</h4>" + QString::fromStdString(disassemble(m_data)).toHtmlEscaped() + "<h4>Hex</h4>" Div(Mono) + QString::fromStdString(toHex(m_data)) + "</div>");
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ui->gas->setMinimum((qint64)Interface::txGas(m_data, 0));
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if (!ui->gas->isEnabled())
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ui->gas->setValue(m_backupGas);
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ui->gas->setEnabled(true);
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}
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else
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{
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m_data = parseData(ui->data->toPlainText().toStdString());
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auto to = m_context->fromString(ui->destination->currentText());
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QString natspec;
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if (ethereum()->codeAt(to, 0).size())
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{
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string userNotice = m_natSpecDB->getUserNotice(ethereum()->postState().codeHash(to), m_data);
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if (userNotice.empty())
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natspec = "Destination contract unknown.";
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else
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{
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NatspecExpressionEvaluator evaluator;
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natspec = evaluator.evalExpression(QString::fromStdString(userNotice));
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}
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ui->gas->setMinimum((qint64)Interface::txGas(m_data, 1));
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if (!ui->gas->isEnabled())
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ui->gas->setValue(m_backupGas);
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ui->gas->setEnabled(true);
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}
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else
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{
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natspec += "Destination not a contract.";
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if (ui->gas->isEnabled())
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m_backupGas = ui->gas->value();
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ui->gas->setValue((qint64)Interface::txGas(m_data));
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ui->gas->setEnabled(false);
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}
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ui->code->setHtml("<h3>NatSpec</h3>" + natspec + "<h3>Dump</h3>" + QString::fromStdString(dev::memDump(m_data, 8, true)) + "<h3>Hex</h3>" + Div(Mono) + QString::fromStdString(toHex(m_data)) + "</div>");
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}
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updateFee();
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}
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void Transact::on_send_clicked()
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{
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u256 totalReq = value() + fee();
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for (auto const& i: m_myKeys)
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if (ethereum()->balanceAt(i.address(), 0) >= totalReq)
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{
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Secret s = i.secret();
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if (isCreation())
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{
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// If execution is a contract creation, add Natspec to
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// a local Natspec LEVELDB
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ethereum()->transact(s, value(), m_data, ui->gas->value(), gasPrice());
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string src = ui->data->toPlainText().toStdString();
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if (sourceIsSolidity(src))
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try
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{
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dev::solidity::CompilerStack compiler;
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m_data = compiler.compile(src, ui->optimize->isChecked());
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for (string const& s: compiler.getContractNames())
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{
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h256 contractHash = compiler.getContractCodeHash(s);
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m_natSpecDB->add(contractHash, compiler.getMetadata(s, dev::solidity::DocumentationType::NatspecUser));
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}
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}
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catch (...)
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{
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}
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close();
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return;
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}
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else
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ethereum()->transact(s, value(), m_context->fromString(ui->destination->currentText()), m_data, ui->gas->value(), gasPrice());
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return;
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}
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QMessageBox::critical(this, "Transaction Failed", "Couldn't make transaction: no single account contains at least the required amount.");
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}
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void Transact::on_debug_clicked()
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{
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try
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{
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u256 totalReq = value() + fee();
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for (auto i: m_myKeys)
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if (ethereum()->balanceAt(i.address()) >= totalReq)
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{
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State st(ethereum()->postState());
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Secret s = i.secret();
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Transaction t = isCreation() ?
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Transaction(value(), gasPrice(), ui->gas->value(), m_data, st.transactionsFrom(dev::toAddress(s)), s) :
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Transaction(value(), gasPrice(), ui->gas->value(), m_context->fromString(ui->destination->currentText()), m_data, st.transactionsFrom(dev::toAddress(s)), s);
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Debugger dw(m_context, this);
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Executive e(st, ethereum()->blockChain(), 0);
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dw.populate(e, t);
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dw.exec();
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return;
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}
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QMessageBox::critical(this, "Transaction Failed", "Couldn't make transaction: no single account contains at least the required amount.");
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}
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catch (dev::Exception const& _e)
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{
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QMessageBox::critical(this, "Transaction Failed", "Couldn't make transaction. Low-level error: " + QString::fromStdString(diagnostic_information(_e)));
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// this output is aimed at developers, reconsider using _e.what for more user friendly output.
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}
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}
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