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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 IPCSocket.cpp
* @author Dimtiry Khokhlov <dimitry@ethdev.com>
* @date 2016
*/
#include <string>
#include <stdio.h>
#include <thread>
#include <libdevcore/CommonData.h>
#include <jsoncpp/json/reader.h>
#include <jsoncpp/json/writer.h>
#include "IPCSocket.h"
using namespace std;
using namespace dev;
IPCSocket::IPCSocket(string const& _path): m_path(_path)
{
if (_path.length() >= sizeof(sockaddr_un::sun_path))
BOOST_FAIL("Error opening IPC: socket path is too long!");
struct sockaddr_un saun;
saun.sun_family = AF_UNIX;
strcpy(saun.sun_path, _path.c_str());
if ((m_socket = socket(AF_UNIX, SOCK_STREAM, 0)) < 0)
BOOST_FAIL("Error creating IPC socket object");
int len = sizeof(saun.sun_family) + strlen(saun.sun_path);
if (connect(m_socket, reinterpret_cast<struct sockaddr const*>(&saun), len) < 0)
BOOST_FAIL("Error connecting to IPC socket: " << _path);
m_fp = fdopen(m_socket, "r");
}
string IPCSocket::sendRequest(string const& _req)
{
send(m_socket, _req.c_str(), _req.length(), 0);
char c;
string response;
while ((c = fgetc(m_fp)) != EOF)
{
if (c != '\n')
response += c;
else
break;
}
return response;
}
RPCSession& RPCSession::instance(const string& _path)
{
static RPCSession session(_path);
BOOST_REQUIRE_EQUAL(session.m_ipcSocket.path(), _path);
return session;
}
string RPCSession::eth_getCode(string const& _address, string const& _blockNumber)
{
return rpcCall("eth_getCode", { quote(_address), quote(_blockNumber) }).asString();
}
RPCSession::TransactionReceipt RPCSession::eth_getTransactionReceipt(string const& _transactionHash)
{
TransactionReceipt receipt;
Json::Value const result = rpcCall("eth_getTransactionReceipt", { quote(_transactionHash) });
BOOST_REQUIRE(!result.isNull());
receipt.gasUsed = result["gasUsed"].asString();
receipt.contractAddress = result["contractAddress"].asString();
return receipt;
}
string RPCSession::eth_sendTransaction(TransactionData const& _td)
{
return rpcCall("eth_sendTransaction", { _td.toJson() }).asString();
}
string RPCSession::eth_call(TransactionData const& _td, string const& _blockNumber)
{
return rpcCall("eth_call", { _td.toJson(), quote(_blockNumber) }).asString();
}
string RPCSession::eth_sendTransaction(string const& _transaction)
{
return rpcCall("eth_sendTransaction", { _transaction }).asString();
}
string RPCSession::eth_getBalance(string const& _address, string const& _blockNumber)
{
string address = (_address.length() == 20) ? "0x" + _address : _address;
return rpcCall("eth_getBalance", { quote(address), quote(_blockNumber) }).asString();
}
void RPCSession::personal_unlockAccount(string const& _address, string const& _password, int _duration)
{
rpcCall("personal_unlockAccount", { quote(_address), quote(_password), to_string(_duration) });
}
string RPCSession::personal_newAccount(string const& _password)
{
return rpcCall("personal_newAccount", { quote(_password) }).asString();
}
void RPCSession::test_setChainParams(string const& _author, string const& _account, string const& _balance)
{
if (_account.size() < 40)
return;
string config = c_genesisConfiguration;
std::map<string, string> replaceMap;
replaceMap["[AUTHOR]"] = _author;
replaceMap["[ACCOUNT]"] = (_account[0] == '0' && _account[1] == 'x') ? _account.substr(2, 40) : _account;
replaceMap["[BALANCE]"] = _balance;
parseString(config, replaceMap);
test_setChainParams(config);
}
void RPCSession::test_setChainParams(string const& _config)
{
rpcCall("test_setChainParams", { _config });
}
void RPCSession::test_rewindToBlock(size_t _blockNr)
{
rpcCall("test_rewindToBlock", { to_string(_blockNr) });
}
void RPCSession::test_mineBlocks(int _number)
{
// Extremely complicated mechanism because sometimes the miner breaks and stops mining.
u256 startBlock = fromBigEndian<u256>(fromHex(rpcCall("eth_blockNumber").asString()));
u256 currentBlock = startBlock;
u256 targetBlock = startBlock + _number;
cout << "MINE" << endl;
rpcCall("test_mineBlocks", { (targetBlock - startBlock).str() }, true);
//@TODO do not use polling - but that would probably need a change to the test client
for (size_t polls = 0; polls < 100; ++polls)
{
currentBlock = fromBigEndian<u256>(fromHex(rpcCall("eth_blockNumber").asString()));
if (currentBlock >= targetBlock)
return;
std::this_thread::sleep_for(chrono::milliseconds(10)); //it does not work faster then 10 ms
}
}
Json::Value RPCSession::rpcCall(string const& _methodName, vector<string> const& _args, bool _canFail)
{
string request = "{\"jsonrpc\":\"2.0\",\"method\":\"" + _methodName + "\",\"params\":[";
for (size_t i = 0; i < _args.size(); ++i)
{
request += _args[i];
if (i + 1 != _args.size())
request += ", ";
}
request += "],\"id\":" + to_string(m_rpcSequence) + "}";
++m_rpcSequence;
string reply = m_ipcSocket.sendRequest(request);
cout << "Request: " << request << endl;
cout << "Reply: " << reply << endl;
Json::Value result;
Json::Reader().parse(reply, result, false);
if (result.isMember("error"))
{
if (_canFail)
return Json::Value();
Json::Value jsonError = result["error"];
BOOST_FAIL("Error on JSON-RPC call: " + jsonError["message"].asString());
}
return result["result"];
}
RPCSession::RPCSession(const string& _path):
m_ipcSocket(_path)
{
for (size_t i = 0; i < 1; ++i)
{
string account = personal_newAccount("");
personal_unlockAccount(account, "", 100000);
m_accounts.push_back(account);
}
test_setChainParams(
"0x1000000000000000000000000000000000000000",
m_accounts.front(),
"1000000000000000000000000000000000000000000000"
);
}
void RPCSession::parseString(string& _string, map<string, string> const& _varMap)
{
std::vector<string> types;
for (std::map<std::string, std::string>::const_iterator it = _varMap.begin(); it != _varMap.end(); it++)
types.push_back(it->first);
for (unsigned i = 0; i < types.size(); i++)
{
std::size_t pos = _string.find(types.at(i));
while (pos != std::string::npos)
{
_string.replace(pos, types.at(i).size(), _varMap.at(types.at(i)));
pos = _string.find(types.at(i));
}
}
}
string RPCSession::TransactionData::toJson() const
{
Json::Value json;
json["from"] = (from.length() == 20) ? "0x" + from : from;
json["to"] = (to.length() == 20 || to == "") ? "0x" + to : to;
json["gas"] = gas;
json["gasprice"] = gasPrice;
json["value"] = value;
json["data"] = data;
return Json::FastWriter().write(json);
}
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