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148 lines (127 loc) · 3.57 KB
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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 UnixSocketServer.cpp
* @authors:
* Arkadiy Paronyan <arkadiy@ethdev.com>
* @date 2015
*/
#if !defined(_WIN32)
#include "UnixSocketServer.h"
#include <cstdlib>
#include <sys/socket.h>
#include <cstdio>
#include <fcntl.h>
#include <unistd.h>
#include <string>
#include <libdevcore/Guards.h>
#include <libdevcore/FileSystem.h>
// "Mac OS X does not support the flag MSG_NOSIGNAL but we have an equivalent."
// See http://lists.apple.com/archives/macnetworkprog/2002/Dec/msg00091.html
#if defined(__APPLE__)
#if !defined(MSG_NOSIGNAL)
#define MSG_NOSIGNAL SO_NOSIGPIPE
#endif
#endif
using namespace std;
using namespace jsonrpc;
using namespace dev;
int const c_pathMaxSize = sizeof(sockaddr_un::sun_path)/sizeof(sockaddr_un::sun_path[0]);
string ipcSocketPath()
{
#ifdef __APPLE__
// A bit hacky, but backwards compatible: If we did not change the default data dir,
// put the socket in ~/Library/Ethereum, otherwise in the set data dir.
string path = getIpcPath();
if (path == getDefaultDataDir())
return getenv("HOME") + string("/Library/Ethereum");
else
return path;
#else
return getIpcPath();
#endif
}
UnixDomainSocketServer::UnixDomainSocketServer(string const& _appId):
IpcServerBase(string(getIpcPath() + "/" + _appId + ".ipc").substr(0, c_pathMaxSize))
{
}
UnixDomainSocketServer::~UnixDomainSocketServer()
{
StopListening();
}
bool UnixDomainSocketServer::StartListening()
{
if (!m_running)
{
if (access(m_path.c_str(), F_OK) != -1)
unlink(m_path.c_str());
if (access(m_path.c_str(), F_OK) != -1)
return false;
m_socket = socket(PF_UNIX, SOCK_STREAM, 0);
memset(&(m_address), 0, sizeof(sockaddr_un));
m_address.sun_family = AF_UNIX;
#ifdef __APPLE__
m_address.sun_len = m_path.size() + 1;
#endif
strncpy(m_address.sun_path, m_path.c_str(), c_pathMaxSize);
::bind(m_socket, reinterpret_cast<sockaddr*>(&m_address), sizeof(sockaddr_un));
listen(m_socket, 128);
}
return IpcServerBase::StartListening();
}
bool UnixDomainSocketServer::StopListening()
{
shutdown(m_socket, SHUT_RDWR);
close(m_socket);
m_socket = -1;
if (IpcServerBase::StopListening())
{
unlink(m_path.c_str());
return true;
}
return false;
}
void UnixDomainSocketServer::Listen()
{
socklen_t addressLen = sizeof(m_address);
while (m_running)
{
int connection = accept(m_socket, (sockaddr*) &(m_address), &addressLen);
if (connection > 0)
{
DEV_GUARDED(x_sockets)
m_sockets.insert(connection);
std::thread handler([this, connection](){ GenerateResponse(connection); });
handler.detach();
}
}
}
void UnixDomainSocketServer::CloseConnection(int _socket)
{
close(_socket);
}
size_t UnixDomainSocketServer::Write(int _connection, string const& _data)
{
int r = send(_connection, _data.data(), _data.size(), MSG_NOSIGNAL);
if (r > 0)
return r;
return 0;
}
size_t UnixDomainSocketServer::Read(int _connection, void* _data, size_t _size)
{
int r = read(_connection, _data, _size);
if (r > 0)
return r;
return 0;
}
#endif