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/* Icinga 2 | (c) 2012 Icinga GmbH | GPLv2+ */
#include "base/tcpsocket.hpp"
#include "base/logger.hpp"
#include "base/utility.hpp"
#include "base/exception.hpp"
#include <boost/exception/errinfo_api_function.hpp>
#include <boost/exception/errinfo_errno.hpp>
#include <iostream>
using namespace icinga;
/**
* Creates a socket and binds it to the specified service.
*
* @param service The service.
* @param family The address family for the socket.
*/
void TcpSocket::Bind(const String& service, int family)
{
Bind(String(), service, family);
}
/**
* Creates a socket and binds it to the specified node and service.
*
* @param node The node.
* @param service The service.
* @param family The address family for the socket.
*/
void TcpSocket::Bind(const String& node, const String& service, int family)
{
addrinfo hints;
addrinfo *result;
int error;
const char *func;
memset(&hints, 0, sizeof(hints));
hints.ai_family = family;
hints.ai_socktype = SOCK_STREAM;
hints.ai_protocol = IPPROTO_TCP;
hints.ai_flags = AI_PASSIVE;
int rc = getaddrinfo(node.IsEmpty() ? nullptr : node.CStr(),
service.CStr(), &hints, &result);
if (rc != 0) {
Log(LogCritical, "TcpSocket")
<< "getaddrinfo() failed with error code " << rc << ", \"" << gai_strerror(rc) << "\"";
BOOST_THROW_EXCEPTION(socket_error()
<< boost::errinfo_api_function("getaddrinfo")
<< errinfo_getaddrinfo_error(rc));
}
int fd = INVALID_SOCKET;
for (addrinfo *info = result; info != nullptr; info = info->ai_next) {
fd = socket(info->ai_family, info->ai_socktype, info->ai_protocol);
if (fd == INVALID_SOCKET) {
#ifdef _WIN32
error = WSAGetLastError();
#else /* _WIN32 */
error = errno;
#endif /* _WIN32 */
func = "socket";
continue;
}
const int optFalse = 0;
setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, reinterpret_cast<const char *>(&optFalse), sizeof(optFalse));
const int optTrue = 1;
setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, reinterpret_cast<const char *>(&optTrue), sizeof(optTrue));
#ifdef SO_REUSEPORT
setsockopt(fd, SOL_SOCKET, SO_REUSEPORT, reinterpret_cast<const char *>(&optTrue), sizeof(optTrue));
#endif /* SO_REUSEPORT */
int rc = bind(fd, info->ai_addr, info->ai_addrlen);
if (rc < 0) {
#ifdef _WIN32
error = WSAGetLastError();
#else /* _WIN32 */
error = errno;
#endif /* _WIN32 */
func = "bind";
closesocket(fd);
continue;
}
SetFD(fd);
break;
}
freeaddrinfo(result);
if (GetFD() == INVALID_SOCKET) {
Log(LogCritical, "TcpSocket")
<< "Invalid socket: " << Utility::FormatErrorNumber(error);
#ifndef _WIN32
BOOST_THROW_EXCEPTION(socket_error()
<< boost::errinfo_api_function(func)
<< boost::errinfo_errno(error));
#else /* _WIN32 */
BOOST_THROW_EXCEPTION(socket_error()
<< boost::errinfo_api_function(func)
<< errinfo_win32_error(error));
#endif /* _WIN32 */
}
}
/**
* Creates a socket and connects to the specified node and service.
*
* @param node The node.
* @param service The service.
*/
void TcpSocket::Connect(const String& node, const String& service)
{
addrinfo hints;
addrinfo *result;
int error;
const char *func;
memset(&hints, 0, sizeof(hints));
hints.ai_family = AF_UNSPEC;
hints.ai_socktype = SOCK_STREAM;
hints.ai_protocol = IPPROTO_TCP;
int rc = getaddrinfo(node.CStr(), service.CStr(), &hints, &result);
if (rc != 0) {
Log(LogCritical, "TcpSocket")
<< "getaddrinfo() failed with error code " << rc << ", \"" << gai_strerror(rc) << "\"";
BOOST_THROW_EXCEPTION(socket_error()
<< boost::errinfo_api_function("getaddrinfo")
<< errinfo_getaddrinfo_error(rc));
}
SOCKET fd = INVALID_SOCKET;
for (addrinfo *info = result; info != nullptr; info = info->ai_next) {
fd = socket(info->ai_family, info->ai_socktype, info->ai_protocol);
if (fd == INVALID_SOCKET) {
#ifdef _WIN32
error = WSAGetLastError();
#else /* _WIN32 */
error = errno;
#endif /* _WIN32 */
func = "socket";
continue;
}
const int optTrue = 1;
if (setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE, reinterpret_cast<const char *>(&optTrue), sizeof(optTrue)) != 0) {
#ifdef _WIN32
error = WSAGetLastError();
#else /* _WIN32 */
error = errno;
#endif /* _WIN32 */
Log(LogWarning, "TcpSocket")
<< "setsockopt() unable to enable TCP keep-alives with error code " << rc;
}
rc = connect(fd, info->ai_addr, info->ai_addrlen);
if (rc < 0) {
#ifdef _WIN32
error = WSAGetLastError();
#else /* _WIN32 */
error = errno;
#endif /* _WIN32 */
func = "connect";
closesocket(fd);
continue;
}
SetFD(fd);
break;
}
freeaddrinfo(result);
if (GetFD() == INVALID_SOCKET) {
Log(LogCritical, "TcpSocket")
<< "Invalid socket: " << Utility::FormatErrorNumber(error);
#ifndef _WIN32
BOOST_THROW_EXCEPTION(socket_error()
<< boost::errinfo_api_function(func)
<< boost::errinfo_errno(error));
#else /* _WIN32 */
BOOST_THROW_EXCEPTION(socket_error()
<< boost::errinfo_api_function(func)
<< errinfo_win32_error(error));
#endif /* _WIN32 */
}
}
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