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/*
This file is part of cpp-ethereum.
cpp-ethereum is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
cpp-ethereum is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
*/
/** @file AccountHolder.h
* @authors:
* Christian R <c@ethdev.com>
* Lefteris Karapetsas <lefteris@ethdev.com>
* @date 2015
*/
#pragma once
#include <functional>
#include <algorithm>
#include <vector>
#include <map>
#include <libdevcrypto/Common.h>
#include <libethcore/CommonJS.h>
#include <libethereum/Transaction.h>
namespace dev
{
namespace eth
{
class KeyManager;
class Interface;
/**
* Manages real accounts (where we know the secret key) and proxy accounts (where transactions
* to be sent from these accounts are forwarded to a proxy on the other side).
*/
class AccountHolder
{
public:
explicit AccountHolder(std::function<Interface*()> const& _client): m_client(_client) {}
virtual AddressHash realAccounts() const = 0;
// use m_web3's submitTransaction
// or use AccountHolder::queueTransaction(_t) to accept
virtual void authenticate(dev::eth::TransactionSkeleton const& _t) = 0;
Addresses allAccounts() const;
bool isRealAccount(Address const& _account) const { return realAccounts().count(_account) > 0; }
bool isProxyAccount(Address const& _account) const { return m_proxyAccounts.count(_account) > 0; }
Address const& defaultTransactAccount() const;
int addProxyAccount(Address const& _account);
bool removeProxyAccount(unsigned _id);
void queueTransaction(eth::TransactionSkeleton const& _transaction);
std::vector<eth::TransactionSkeleton> const& queuedTransactions(int _id) const;
void clearQueue(int _id);
protected:
std::function<Interface*()> m_client;
private:
using TransactionQueue = std::vector<eth::TransactionSkeleton>;
std::unordered_map<Address, int> m_proxyAccounts;
std::unordered_map<int, std::pair<Address, TransactionQueue>> m_transactionQueues;
};
class SimpleAccountHolder: public AccountHolder
{
public:
SimpleAccountHolder(std::function<Interface*()> const& _client, std::function<std::string(Address)> const& _getPassword, KeyManager& _keyman):
AccountHolder(_client),
m_getPassword(_getPassword),
m_keyManager(_keyman)
{}
AddressHash realAccounts() const override;
void authenticate(dev::eth::TransactionSkeleton const& _t) override;
private:
std::function<std::string(Address)> m_getPassword;
KeyManager& m_keyManager;
};
class FixedAccountHolder: public AccountHolder
{
public:
FixedAccountHolder(std::function<Interface*()> const& _client, std::vector<dev::KeyPair> const& _accounts):
AccountHolder(_client)
{
setAccounts(_accounts);
}
void setAccounts(std::vector<dev::KeyPair> const& _accounts)
{
for (auto const& i: _accounts)
m_accounts[i.address()] = i.secret();
}
dev::AddressHash realAccounts() const override
{
dev::AddressHash ret;
for (auto const& i: m_accounts)
ret.insert(i.first);
return ret;
}
// use m_web3's submitTransaction
// or use AccountHolder::queueTransaction(_t) to accept
void authenticate(dev::eth::TransactionSkeleton const& _t) override;
private:
std::unordered_map<dev::Address, dev::Secret> m_accounts;
};
}
}