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IPC socket and RPC communication with node
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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 <[email protected]> | ||
* @date 2016 | ||
*/ | ||
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#include <string> | ||
#include <stdio.h> | ||
#include <thread> | ||
#include "IPCSocket.h" | ||
using namespace std; | ||
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IPCSocket::IPCSocket(string const& _path): m_address(_path) | ||
{ | ||
if (_path.length() > 108) | ||
BOOST_FAIL("Error opening IPC: socket path is too long!"); | ||
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struct sockaddr_un saun; | ||
saun.sun_family = AF_UNIX; | ||
strcpy(saun.sun_path, _path.c_str()); | ||
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if ((m_socket = socket(AF_UNIX, SOCK_STREAM, 0)) < 0) | ||
BOOST_FAIL("Error creating IPC socket object"); | ||
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int len = sizeof(saun.sun_family) + strlen(saun.sun_path); | ||
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if (connect(m_socket, reinterpret_cast<struct sockaddr const*>(&saun), len) < 0) | ||
BOOST_FAIL("Error connecting to IPC socket: " << _path); | ||
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m_fp = fdopen(m_socket, "r"); | ||
} | ||
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string IPCSocket::sendRequest(string const& _req) | ||
{ | ||
send(m_socket, _req.c_str(), _req.length(), 0); | ||
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char c; | ||
string response; | ||
while ((c = fgetc(m_fp)) != EOF) | ||
{ | ||
if (c != '\n') | ||
response += c; | ||
else | ||
break; | ||
} | ||
return response; | ||
} | ||
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string RPCRequest::eth_getCode(string const& _address, string const& _blockNumber) | ||
{ | ||
return getReply("result\":", rpcCall("eth_getCode", { makeString(_address), makeString(_blockNumber) })); | ||
} | ||
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RPCRequest::transactionReceipt RPCRequest::eth_getTransactionReceipt(string const& _transactionHash) | ||
{ | ||
transactionReceipt receipt; | ||
string srpcCall = rpcCall("eth_getTransactionReceipt", { makeString(_transactionHash) }); | ||
receipt.gasUsed = getReply("gasUsed\":" , srpcCall); | ||
receipt.contractAddress = getReply("contractAddress\":" , srpcCall); | ||
return receipt; | ||
} | ||
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string RPCRequest::eth_sendTransaction(transactionData const& _td) | ||
{ | ||
string transaction = c_transaction; | ||
std::map<string, string> replaceMap; | ||
replaceMap["[FROM]"] = (_td.from.length() == 20) ? "0x" + _td.from : _td.from; | ||
replaceMap["[TO]"] = (_td.to.length() == 20 || _td.to == "") ? "0x" + _td.to : _td.to; | ||
replaceMap["[GAS]"] = _td.gas; | ||
replaceMap["[GASPRICE]"] = _td.gasPrice; | ||
replaceMap["[VALUE]"] = _td.value; | ||
replaceMap["[DATA]"] = _td.data; | ||
parseString(transaction, replaceMap); | ||
return getReply("result\":", rpcCall("eth_sendTransaction", { transaction })); | ||
} | ||
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string RPCRequest::eth_call(transactionData const& _td, string const& _blockNumber) | ||
{ | ||
string transaction = c_transaction; | ||
std::map<string, string> replaceMap; | ||
replaceMap["[FROM]"] = (_td.from.length() == 20) ? "0x" + _td.from : _td.from; | ||
replaceMap["[TO]"] = (_td.to.length() == 20 || _td.to == "") ? "0x" + _td.to : _td.to; | ||
replaceMap["[GAS]"] = _td.gas; | ||
replaceMap["[GASPRICE]"] = _td.gasPrice; | ||
replaceMap["[VALUE]"] = _td.value; | ||
replaceMap["[DATA]"] = _td.data; | ||
parseString(transaction, replaceMap); | ||
return getReply("result\":", rpcCall("eth_call", { transaction, makeString(_blockNumber) })); | ||
} | ||
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string RPCRequest::eth_sendTransaction(string const& _transaction) | ||
{ | ||
return getReply("result\":", rpcCall("eth_sendTransaction", { _transaction })); | ||
} | ||
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string RPCRequest::eth_getBalance(string const& _address, string const& _blockNumber) | ||
{ | ||
string address = (_address.length() == 20) ? "0x" + _address : _address; | ||
return getReply("result\":", rpcCall("eth_getBalance", { makeString(address), makeString(_blockNumber) })); | ||
} | ||
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void RPCRequest::personal_unlockAccount(string const& _address, string const& _password, int _duration) | ||
{ | ||
rpcCall("personal_unlockAccount", { makeString(_address), makeString(_password), to_string(_duration) }); | ||
} | ||
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string RPCRequest::personal_newAccount(string const& _password) | ||
{ | ||
return getReply("result\":", rpcCall("personal_newAccount", { makeString(_password) })); | ||
} | ||
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void RPCRequest::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); | ||
} | ||
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void RPCRequest::test_setChainParams(string const& _config) | ||
{ | ||
rpcCall("test_setChainParams", { _config }); | ||
} | ||
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void RPCRequest::test_mineBlocks(int _number) | ||
{ | ||
rpcCall("test_mineBlocks", { to_string(_number) }); | ||
std::this_thread::sleep_for(chrono::seconds(1)); | ||
} | ||
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string RPCRequest::rpcCall(string const& _methodName, vector<string> const& _args) | ||
{ | ||
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 += ", "; | ||
} | ||
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request += "],\"id\":" + to_string(m_rpcSequence) + "}"; | ||
++m_rpcSequence; | ||
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string reply = m_ipcSocket.sendRequest(request); | ||
//cout << "Request: " << request << endl; | ||
//cout << "Reply: " << reply << endl; | ||
return reply; | ||
} | ||
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void RPCRequest::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); | ||
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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)); | ||
} | ||
} | ||
} | ||
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string RPCRequest::getReply(string const& _what, string const& _arg) | ||
{ | ||
string reply = ""; | ||
size_t posStart = _arg.find(_what); | ||
size_t posEnd = _arg.find(",", posStart); | ||
if (posEnd == string::npos) | ||
posEnd = _arg.find("}", posStart); | ||
if (posStart != string::npos) | ||
reply = _arg.substr(posStart + _what.length(), posEnd - posStart - _what.length()); | ||
reply.erase(std::remove(reply.begin(), reply.end(), '"'), reply.end()); | ||
return reply; | ||
} |
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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.h | ||
* @author Dimtiry Khokhlov <[email protected]> | ||
* @date 2016 | ||
*/ | ||
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#include <string> | ||
#include <stdio.h> | ||
#include <map> | ||
#include <sys/types.h> | ||
#include <sys/socket.h> | ||
#include <sys/un.h> | ||
#include <boost/test/unit_test.hpp> | ||
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using namespace std; | ||
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class IPCSocket | ||
{ | ||
public: | ||
IPCSocket(string const& _address); | ||
string sendRequest(string const& _req); | ||
~IPCSocket() { close(m_socket); fclose(m_fp); } | ||
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private: | ||
FILE *m_fp; | ||
string m_address; | ||
int m_socket; | ||
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}; | ||
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class RPCRequest | ||
{ | ||
public: | ||
struct transactionData | ||
{ | ||
string from; | ||
string to; | ||
string gas; | ||
string gasPrice; | ||
string value; | ||
string data; | ||
}; | ||
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struct transactionReceipt | ||
{ | ||
string gasUsed; | ||
string contractAddress; | ||
}; | ||
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RPCRequest(string const& _localSocketAddress): m_ipcSocket(_localSocketAddress) {} | ||
string eth_getCode(string const& _address, string const& _blockNumber); | ||
string eth_call(transactionData const& _td, string const& _blockNumber); | ||
transactionReceipt eth_getTransactionReceipt(string const& _transactionHash); | ||
string eth_sendTransaction(transactionData const& _transactionData); | ||
string eth_sendTransaction(string const& _transaction); | ||
string eth_getBalance(string const& _address, string const& _blockNumber); | ||
string personal_newAccount(string const& _password); | ||
void personal_unlockAccount(string const& _address, string const& _password, int _duration); | ||
void test_setChainParams(string const& _author, string const& _account, string const& _balance); | ||
void test_setChainParams(string const& _config); | ||
void test_mineBlocks(int _number); | ||
string rpcCall(string const& _methodName, vector<string> const& _args); | ||
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private: | ||
inline string makeString(string const& _arg) { return "\"" + _arg + "\""; } | ||
inline string getReply(string const& _what, string const& _arg); | ||
/// Parse string replacing keywords to values | ||
void parseString(string& _string, map<string, string> const& _varMap); | ||
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IPCSocket m_ipcSocket; | ||
size_t m_rpcSequence = 1; | ||
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//Just working example of the node configuration file | ||
string const c_genesisConfiguration = R"( | ||
{ | ||
"sealEngine": "NoProof", | ||
"options": { | ||
}, | ||
"params": { | ||
"accountStartNonce": "0x", | ||
"maximumExtraDataSize": "0x1000000", | ||
"blockReward": "0x", | ||
"registrar": "" | ||
}, | ||
"genesis": { | ||
"author": "[AUTHOR]", | ||
"timestamp": "0x00", | ||
"parentHash": "0x0000000000000000000000000000000000000000000000000000000000000000", | ||
"extraData": "0x", | ||
"gasLimit": "0x1000000000000" | ||
}, | ||
"accounts": { | ||
"0000000000000000000000000000000000000001": { "wei": "1", "precompiled": { "name": "ecrecover", "linear": { "base": 3000, "word": 0 } } }, | ||
"0000000000000000000000000000000000000002": { "wei": "1", "precompiled": { "name": "sha256", "linear": { "base": 60, "word": 12 } } }, | ||
"0000000000000000000000000000000000000003": { "wei": "1", "precompiled": { "name": "ripemd160", "linear": { "base": 600, "word": 120 } } }, | ||
"0000000000000000000000000000000000000004": { "wei": "1", "precompiled": { "name": "identity", "linear": { "base": 15, "word": 3 } } }, | ||
"[ACCOUNT]": { "wei": "[BALANCE]" } | ||
}, | ||
"network": { | ||
"nodes": [ | ||
] | ||
} | ||
} | ||
)"; | ||
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string const c_transaction = R"( | ||
{ | ||
"from": "[FROM]", | ||
"to": "[TO]", | ||
"gas": "[GAS]", | ||
"gasPrice": "[GASPRICE]", | ||
"value": "[VALUE]", | ||
"data": "[DATA]" | ||
} | ||
)"; | ||
}; | ||
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