Add private blockchain feature.

alethzero/Main.ui

@@ -185,6 +185,8 @@
     <addaction name="killBlockchain"/>
     <addaction name="inject"/>
     <addaction name="forceMining"/>
+    <addaction name="separator"/>
+    <addaction name="usePrivate"/>
    </widget>
    <addaction name="menu_File"/>
    <addaction name="menu_Network"/>
@@ -1664,6 +1666,19 @@ font-size: 14pt</string>
     <string>&amp;Refresh</string>
    </property>
   </action>
+  <action name="usePrivate">
+   <property name="checkable">
+    <bool>true</bool>
+   </property>
+   <property name="text">
+    <string>&amp;Use Private Chain...</string>
+   </property>
+  </action>
+  <action name="joinPrivate">
+   <property name="text">
+    <string>&amp;Join Private Chain</string>
+   </property>
+  </action>
  </widget>
  <layoutdefault spacing="6" margin="11"/>
  <customwidgets>

alethzero/MainWin.cpp

@@ -527,6 +527,7 @@ void Main::writeSettings()
 	s.setValue("idealPeers", ui->idealPeers->value());
 	s.setValue("port", ui->port->value());
 	s.setValue("url", ui->urlEdit->text());
+	s.setValue("privateChain", m_privateChain);
 
 	bytes d = m_client->savePeers();
 	if (d.size())
@@ -573,7 +574,10 @@ void Main::readSettings(bool _skipGeometry)
 	ui->clientName->setText(s.value("clientName", "").toString());
 	ui->idealPeers->setValue(s.value("idealPeers", ui->idealPeers->value()).toInt());
 	ui->port->setValue(s.value("port", ui->port->value()).toInt());
-	ui->nameReg->setText(s.value("NameReg", "").toString());
+	ui->nameReg->setText(s.value("nameReg", "").toString());
+	m_privateChain = s.value("privateChain", "").toString();
+	ui->usePrivate->setChecked(m_privateChain.size());
+
 	ui->urlEdit->setText(s.value("url", "about:blank").toString());	//http://gavwood.com/gavcoin.html
 	on_urlEdit_returnPressed();
 }
@@ -607,6 +611,21 @@ void Main::on_exportKey_triggered()
 	}
 }
 
+void Main::on_usePrivate_triggered()
+{
+	if (ui->usePrivate->isChecked())
+	{
+		m_privateChain = QInputDialog::getText(this, "Enter Name", "Enter the name of your private chain", QLineEdit::Normal, QString("NewChain-%1").arg(time(0)));
+		if (m_privateChain.isEmpty())
+			ui->usePrivate->setChecked(false);
+	}
+	else
+	{
+		m_privateChain.clear();
+	}
+	on_killBlockchain_triggered();
+}
+
 void Main::on_urlEdit_returnPressed()
 {
 	QString s = ui->urlEdit->text();
@@ -779,7 +798,7 @@ void Main::refreshBlockCount()
 	cwatch << "refreshBlockCount()";
 	auto d = m_client->blockChain().details();
 	auto diff = BlockInfo(m_client->blockChain().block()).difficulty;
-	ui->blockCount->setText(QString("#%1 @%3 T%2 N%4 D%5").arg(d.number).arg(toLog2(d.totalDifficulty)).arg(toLog2(diff)).arg(eth::c_protocolVersion).arg(eth::c_databaseVersion));
+	ui->blockCount->setText(QString("%6 #%1 @%3 T%2 N%4 D%5").arg(d.number).arg(toLog2(d.totalDifficulty)).arg(toLog2(diff)).arg(eth::c_protocolVersion).arg(eth::c_databaseVersion).arg(m_privateChain.size() ? "[" + m_privateChain + "] " : "testnet"));
 }
 
 static bool blockMatch(string const& _f, eth::BlockDetails const& _b, h256 _h, BlockChain const& _bc)
@@ -1475,7 +1494,7 @@ void Main::on_net_triggered()
 	m_client->setClientVersion(n);
 	if (ui->net->isChecked())
 	{
-		m_client->startNetwork(ui->port->value(), string(), 0, NodeMode::Full, ui->idealPeers->value(), ui->forceAddress->text().toStdString(), ui->upnp->isChecked());
+		m_client->startNetwork(ui->port->value(), string(), 0, NodeMode::Full, ui->idealPeers->value(), ui->forceAddress->text().toStdString(), ui->upnp->isChecked(), m_privateChain.size() ? sha3(m_privateChain.toStdString()) : 0);
 		if (m_peers.size() && ui->usePast->isChecked())
 			m_client->restorePeers(bytesConstRef((byte*)m_peers.data(), m_peers.size()));
 	}

alethzero/MainWin.h

@@ -138,6 +138,7 @@ private slots:
 	void on_debugDumpState_triggered(int _add = 1);
 	void on_debugDumpStatePre_triggered();
 	void on_refresh_triggered();
+    void on_usePrivate_triggered();
 
 signals:
 	void poll();
@@ -206,6 +207,7 @@ private:
 	QByteArray m_peers;
 	QStringList m_servers;
 	QList<eth::KeyPair> m_myKeys;
+    QString m_privateChain = 0;
 	bool m_keysChanged = false;
 	eth::bytes m_data;
 	eth::Address m_nameReg;

libethereum/Client.cpp

@@ -197,7 +197,7 @@ void Client::noteChanged(h256Set const& _filters)
 		}
 }
 
-void Client::startNetwork(unsigned short _listenPort, std::string const& _seedHost, unsigned short _port, NodeMode _mode, unsigned _peers, string const& _publicIP, bool _upnp)
+void Client::startNetwork(unsigned short _listenPort, std::string const& _seedHost, unsigned short _port, NodeMode _mode, unsigned _peers, string const& _publicIP, bool _upnp, u256 _networkId)
 {
 	static const char* c_threadName = "net";
 
@@ -220,7 +220,7 @@ void Client::startNetwork(unsigned short _listenPort, std::string const& _seedHo
 
 			try
 			{
-				m_net.reset(new PeerServer(m_clientVersion, m_bc, 0, _listenPort, _mode, _publicIP, _upnp));
+				m_net.reset(new PeerServer(m_clientVersion, m_bc, _networkId, _listenPort, _mode, _publicIP, _upnp));
 			}
 			catch (std::exception const&)
 			{

libethereum/Client.h

@@ -263,7 +263,7 @@ public:
 	void setIdealPeerCount(size_t _n) const;
 
 	/// Start the network subsystem.
-	void startNetwork(unsigned short _listenPort = 30303, std::string const& _remoteHost = std::string(), unsigned short _remotePort = 30303, NodeMode _mode = NodeMode::Full, unsigned _peers = 5, std::string const& _publicIP = std::string(), bool _upnp = true);
+	void startNetwork(unsigned short _listenPort = 30303, std::string const& _remoteHost = std::string(), unsigned short _remotePort = 30303, NodeMode _mode = NodeMode::Full, unsigned _peers = 5, std::string const& _publicIP = std::string(), bool _upnp = true, u256 _networkId = 0);
 	/// Connect to a particular peer.
 	void connect(std::string const& _seedHost, unsigned short _port = 30303);
 	/// Stop the network subsystem.

libethereum/PeerServer.cpp

@@ -55,7 +55,7 @@ static const set<bi::address> c_rejectAddresses = {
 	{bi::address_v6::from_string("::")}
 };
 
-PeerServer::PeerServer(std::string const& _clientVersion, BlockChain const& _ch, unsigned int _networkId, unsigned short _port, NodeMode _m, string const& _publicAddress, bool _upnp):
+PeerServer::PeerServer(std::string const& _clientVersion, BlockChain const& _ch, u256 _networkId, unsigned short _port, NodeMode _m, string const& _publicAddress, bool _upnp):
 	m_clientVersion(_clientVersion),
 	m_mode(_m),
 	m_listenPort(_port),
@@ -71,7 +71,7 @@ PeerServer::PeerServer(std::string const& _clientVersion, BlockChain const& _ch,
 	clog(NetNote) << "Id:" << toHex(m_key.address().ref().cropped(0, 4)) << "Mode: " << (_m == NodeMode::PeerServer ? "PeerServer" : "Full");
 }
 
-PeerServer::PeerServer(std::string const& _clientVersion, BlockChain const& _ch, unsigned int _networkId, NodeMode _m, string const& _publicAddress, bool _upnp):
+PeerServer::PeerServer(std::string const& _clientVersion, BlockChain const& _ch, u256 _networkId, NodeMode _m, string const& _publicAddress, bool _upnp):
 	m_clientVersion(_clientVersion),
 	m_mode(_m),
 	m_listenPort(0),
@@ -90,7 +90,7 @@ PeerServer::PeerServer(std::string const& _clientVersion, BlockChain const& _ch,
 	clog(NetNote) << "Id:" << toHex(m_key.address().ref().cropped(0, 4)) << "Mode: " << (m_mode == NodeMode::PeerServer ? "PeerServer" : "Full");
 }
 
-PeerServer::PeerServer(std::string const& _clientVersion, BlockChain const& _ch, unsigned int _networkId, NodeMode _m):
+PeerServer::PeerServer(std::string const& _clientVersion, BlockChain const& _ch, u256 _networkId, NodeMode _m):
 	m_clientVersion(_clientVersion),
 	m_mode(_m),
 	m_listenPort(0),

libethereum/PeerServer.h

@@ -50,11 +50,11 @@ class PeerServer
 
 public:
 	/// Start server, listening for connections on the given port.
-	PeerServer(std::string const& _clientVersion, BlockChain const& _ch, unsigned int _networkId, unsigned short _port, NodeMode _m = NodeMode::Full, std::string const& _publicAddress = std::string(), bool _upnp = true);
+	PeerServer(std::string const& _clientVersion, BlockChain const& _ch, u256 _networkId, unsigned short _port, NodeMode _m = NodeMode::Full, std::string const& _publicAddress = std::string(), bool _upnp = true);
 	/// Start server, listening for connections on a system-assigned port.
-	PeerServer(std::string const& _clientVersion, BlockChain const& _ch, unsigned int _networkId, NodeMode _m = NodeMode::Full, std::string const& _publicAddress = std::string(), bool _upnp = true);
+	PeerServer(std::string const& _clientVersion, BlockChain const& _ch, u256 _networkId, NodeMode _m = NodeMode::Full, std::string const& _publicAddress = std::string(), bool _upnp = true);
 	/// Start server, but don't listen.
-	PeerServer(std::string const& _clientVersion, BlockChain const& _ch, unsigned int _networkId, NodeMode _m = NodeMode::Full);
+	PeerServer(std::string const& _clientVersion, BlockChain const& _ch, u256 _networkId, NodeMode _m = NodeMode::Full);
 
 	/// Will block on network process events.
 	~PeerServer();
@@ -63,7 +63,7 @@ public:
 	void disconnectPeers();
 
 	static unsigned protocolVersion();
-	unsigned networkId() { return m_networkId; }
+	u256 networkId() { return m_networkId; }
 
 	/// Connect to a peer explicitly.
 	void connect(std::string const& _addr, unsigned short _port = 30303) noexcept;
@@ -137,7 +137,7 @@ private:
 	bi::tcp::endpoint m_public;
 	KeyPair m_key;
 
-	unsigned m_networkId;
+	u256 m_networkId;
 
 	mutable std::mutex x_peers;
 	std::map<Public, std::weak_ptr<PeerSession>> m_peers;

libethereum/PeerSession.cpp

@@ -35,7 +35,7 @@ static const eth::uint c_maxHashes = 4096;		///< Maximum number of hashes GetCha
 static const eth::uint c_maxBlocks = 2048;		///< Maximum number of blocks Blocks will ever send.
 static const eth::uint c_maxBlocksAsk = 512;	///< Maximum number of blocks we ask to receive in Blocks (when using GetChain).
 
-PeerSession::PeerSession(PeerServer* _s, bi::tcp::socket _socket, uint _rNId, bi::address _peerAddress, unsigned short _peerPort):
+PeerSession::PeerSession(PeerServer* _s, bi::tcp::socket _socket, u256 _rNId, bi::address _peerAddress, unsigned short _peerPort):
 	m_server(_s),
 	m_socket(std::move(_socket)),
 	m_reqNetworkId(_rNId),
@@ -78,7 +78,7 @@ bool PeerSession::interpret(RLP const& _r)
 	case HelloPacket:
 	{
 		m_protocolVersion = _r[1].toInt<uint>();
-		m_networkId = _r[2].toInt<uint>();
+		m_networkId = _r[2].toInt<u256>();
 		auto clientVersion = _r[3].toString();
 		m_caps = _r[4].toInt<uint>();
 		m_listenPort = _r[5].toInt<unsigned short>();

libethereum/PeerSession.h

@@ -38,7 +38,7 @@ class PeerSession: public std::enable_shared_from_this<PeerSession>
 	friend class PeerServer;
 
 public:
-	PeerSession(PeerServer* _server, bi::tcp::socket _socket, uint _rNId, bi::address _peerAddress, unsigned short _peerPort = 0);
+	PeerSession(PeerServer* _server, bi::tcp::socket _socket, u256 _rNId, bi::address _peerAddress, unsigned short _peerPort = 0);
 	~PeerSession();
 
 	void start();
@@ -79,8 +79,8 @@ private:
 
 	bytes m_incoming;
 	uint m_protocolVersion;
-	uint m_networkId;
-	uint m_reqNetworkId;
+	u256 m_networkId;
+	u256 m_reqNetworkId;
 	unsigned short m_listenPort;			///< Port that the remote client is listening on for connections. Useful for giving to peers.
 	uint m_caps;