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/*
* JsonRpc-Cpp - JSON-RPC implementation.
* Copyright (C) 2008-2011 Sebastien Vincent <sebastien.vincent@cppextrem.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* \file networking.cpp
* \brief Networking utils.
* \author Sebastien Vincent
*/
#include <cstdio>
#include <cstring>
#include "networking.h"
namespace networking
{
#ifdef _WIN32
/**
* \var wsaData
* \brief MS Windows object to start
* networking stuff.
*/
static WSAData wsaData;
#endif
bool init()
{
bool ret = false;
#ifdef _WIN32
ret = (WSAStartup(MAKEWORD(2, 0), &wsaData) == 0);
#else
/* unix-like */
ret = true;
#endif
return ret;
}
void cleanup()
{
#ifdef _WIN32
WSACleanup();
#endif
}
int connect(enum TransportProtocol protocol, const std::string& address,
uint16_t port, struct sockaddr_storage* sockaddr, socklen_t* addrlen)
{
struct addrinfo hints;
struct addrinfo* res = NULL;
struct addrinfo* p = NULL;
char service[8];
int sock = -1;
if(!port || address == "")
{
return -1;
}
snprintf(service, sizeof(service), "%u", port);
service[sizeof(service)-1] = 0x00;
memset(&hints, 0, sizeof(struct addrinfo));
hints.ai_family = AF_UNSPEC;
hints.ai_socktype = protocol == UDP ? SOCK_DGRAM : SOCK_STREAM;
hints.ai_protocol = protocol;
hints.ai_flags = 0;
if(getaddrinfo(address.c_str(), service, &hints, &res) != 0)
{
return -1;
}
for(p = res ; p ; p = p->ai_next)
{
sock = socket(p->ai_family, p->ai_socktype, p->ai_protocol);
if(sock == -1)
{
continue;
}
if(protocol == TCP && ::connect(sock, (struct sockaddr*)p->ai_addr,
p->ai_addrlen) == -1)
{
::close(sock);
sock = -1;
continue;
}
if(sockaddr)
{
memcpy(sockaddr, p->ai_addr, p->ai_addrlen);
}
if(addrlen)
{
*addrlen = p->ai_addrlen;
}
/* ok so now we have a socket bound, break the loop */
break;
}
freeaddrinfo(res);
p = NULL;
return sock;
}
int bind(enum TransportProtocol protocol, const std::string& address,
uint16_t port, struct sockaddr_storage* sockaddr, socklen_t* addrlen)
{
struct addrinfo hints;
struct addrinfo* res = NULL;
struct addrinfo* p = NULL;
char service[8];
int sock = -1;
if(!port || address == "")
{
return -1;
}
snprintf(service, sizeof(service), "%u", port);
service[sizeof(service)-1] = 0x00;
memset(&hints, 0, sizeof(struct addrinfo));
hints.ai_family = AF_UNSPEC;
hints.ai_socktype = protocol == UDP ? SOCK_DGRAM : SOCK_STREAM;
hints.ai_protocol = protocol;
hints.ai_flags = AI_PASSIVE;
if(getaddrinfo(address.c_str(), service, &hints, &res) != 0)
{
return -1;
}
for(p = res ; p ; p = p->ai_next)
{
int on = 1;
sock = socket(p->ai_family, p->ai_socktype, p->ai_protocol);
if(sock == -1)
{
continue;
}
#ifndef _WIN32
setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(int));
/* accept IPv6 OR IPv4 on the same socket */
on = 1;
setsockopt(sock, IPPROTO_IPV6, IPV6_V6ONLY, &on, sizeof(on));
#else
(void)on;
#endif
if(::bind(sock, p->ai_addr, p->ai_addrlen) == -1)
{
::close(sock);
sock = -1;
continue;
}
if(sockaddr)
{
memcpy(sockaddr, p->ai_addr, p->ai_addrlen);
}
if(addrlen)
{
*addrlen = p->ai_addrlen;
}
/* ok so now we have a socket bound, break the loop */
break;
}
freeaddrinfo(res);
p = NULL;
return sock;
}
} /* namespace networking */
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