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128 lines
3.5 KiB
128 lines
3.5 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 AccountHolder.cpp
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* @authors:
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* Christian R <c@ethdev.com>
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* Lefteris Karapetsas <lefteris@ethdev.com>
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* @date 2015
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*/
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#include "AccountHolder.h"
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#include <random>
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#include <ctime>
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#include <libdevcore/Guards.h>
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#include <libethereum/Client.h>
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#include <libethcore/KeyManager.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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vector<TransactionSkeleton> g_emptyQueue;
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static std::mt19937 g_randomNumberGenerator(time(0));
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static Mutex x_rngMutex;
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vector<Address> AccountHolder::allAccounts() const
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{
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vector<Address> accounts;
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accounts += realAccounts();
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for (auto const& pair: m_proxyAccounts)
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if (!isRealAccount(pair.first))
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accounts.push_back(pair.first);
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return accounts;
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}
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Address const& AccountHolder::defaultTransactAccount() const
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{
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auto accounts = realAccounts();
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if (accounts.empty())
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return ZeroAddress;
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Address const* bestMatch = &*accounts.begin();
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for (auto const& account: accounts)
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if (m_client()->balanceAt(account) > m_client()->balanceAt(*bestMatch))
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bestMatch = &account;
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return *bestMatch;
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}
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int AccountHolder::addProxyAccount(const Address& _account)
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{
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Guard g(x_rngMutex);
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int id = std::uniform_int_distribution<int>(1)(g_randomNumberGenerator);
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id = int(u256(FixedHash<32>(sha3(bytesConstRef((byte*)(&id), sizeof(int) / sizeof(byte))))));
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if (isProxyAccount(_account) || id == 0 || m_transactionQueues.count(id))
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return 0;
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m_proxyAccounts.insert(make_pair(_account, id));
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m_transactionQueues[id].first = _account;
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return id;
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}
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bool AccountHolder::removeProxyAccount(unsigned _id)
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{
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if (!m_transactionQueues.count(_id))
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return false;
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m_proxyAccounts.erase(m_transactionQueues[_id].first);
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m_transactionQueues.erase(_id);
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return true;
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}
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void AccountHolder::queueTransaction(TransactionSkeleton const& _transaction)
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{
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if (!m_proxyAccounts.count(_transaction.from))
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return;
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int id = m_proxyAccounts[_transaction.from];
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m_transactionQueues[id].second.push_back(_transaction);
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}
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vector<TransactionSkeleton> const& AccountHolder::queuedTransactions(int _id) const
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{
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if (!m_transactionQueues.count(_id))
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return g_emptyQueue;
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return m_transactionQueues.at(_id).second;
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}
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void AccountHolder::clearQueue(int _id)
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{
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if (m_transactionQueues.count(_id))
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m_transactionQueues.at(_id).second.clear();
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}
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AddressHash SimpleAccountHolder::realAccounts() const
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{
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return m_keyManager.accountsHash();
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}
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h256 SimpleAccountHolder::authenticate(dev::eth::TransactionSkeleton const& _t)
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{
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if (isRealAccount(_t.from))
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return m_client()->submitTransaction(_t, m_keyManager.secret(_t.from, [&](){ return m_getPassword(_t.from); }));
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else if (isProxyAccount(_t.from))
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queueTransaction(_t);
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return h256();
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}
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h256 FixedAccountHolder::authenticate(dev::eth::TransactionSkeleton const& _t)
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{
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if (isRealAccount(_t.from))
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return m_client()->submitTransaction(_t, m_accounts[_t.from]);
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else if (isProxyAccount(_t.from))
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queueTransaction(_t);
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return h256();
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}
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