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// **********************************************************************
//
// Copyright (c) 2003-2014 ZeroC, Inc. All rights reserved.
//
// This copy of Ice is licensed to you under the terms described in the
// ICE_LICENSE file included in this distribution.
//
// **********************************************************************
#include <IceSSL/AcceptorI.h>
#include <IceSSL/Instance.h>
#include <IceSSL/OpenSSLTransceiverI.h>
#include <IceSSL/SecureTransportTransceiverI.h>
#include <IceSSL/SChannelTransceiverI.h>
#include <IceSSL/Util.h>
#include <Ice/Communicator.h>
#include <Ice/Exception.h>
#include <Ice/LocalException.h>
#include <Ice/LoggerUtil.h>
#include <Ice/Properties.h>
#include <IceUtil/StringUtil.h>
#ifdef ICE_USE_IOCP
# include <Mswsock.h>
#endif
using namespace std;
using namespace Ice;
using namespace IceSSL;
IceInternal::NativeInfoPtr
IceSSL::AcceptorI::getNativeInfo()
{
return this;
}
#ifdef ICE_USE_IOCP
IceInternal::AsyncInfo*
# ifndef NDEBUG
IceSSL::AcceptorI::getAsyncInfo(IceInternal::SocketOperation status)
# else
IceSSL::AcceptorI::getAsyncInfo(IceInternal::SocketOperation)
# endif
{
assert(status == IceInternal::SocketOperationRead);
return &_info;
}
#endif
void
IceSSL::AcceptorI::close()
{
if(_instance->traceLevel() >= 1)
{
Trace out(_instance->logger(), _instance->traceCategory());
out << "stopping to accept " << _instance->protocol() << " connections at " << toString();
}
SOCKET fd = _fd;
_fd = INVALID_SOCKET;
IceInternal::closeSocket(fd);
}
void
IceSSL::AcceptorI::listen()
{
try
{
IceInternal::doListen(_fd, _backlog);
}
catch(...)
{
_fd = INVALID_SOCKET;
throw;
}
if(_instance->traceLevel() >= 1)
{
Trace out(_instance->logger(), _instance->traceCategory());
out << "listening for " << _instance->protocol() << " connections at " << toString();
vector<string> interfaces =
IceInternal::getHostsForEndpointExpand(IceInternal::inetAddrToString(_addr), _instance->protocolSupport(),
true);
if(!interfaces.empty())
{
out << "\nlocal interfaces: ";
out << IceUtilInternal::joinString(interfaces, ", ");
}
}
}
#ifdef ICE_USE_IOCP
void
IceSSL::AcceptorI::startAccept()
{
LPFN_ACCEPTEX AcceptEx = NULL; // a pointer to the 'AcceptEx()' function
GUID GuidAcceptEx = WSAID_ACCEPTEX; // The Guid
DWORD dwBytes;
if(WSAIoctl(_fd,
SIO_GET_EXTENSION_FUNCTION_POINTER,
&GuidAcceptEx,
sizeof(GuidAcceptEx),
&AcceptEx,
sizeof(AcceptEx),
&dwBytes,
NULL,
NULL) == SOCKET_ERROR)
{
SocketException ex(__FILE__, __LINE__);
ex.error = IceInternal::getSocketErrno();
throw ex;
}
assert(_acceptFd == INVALID_SOCKET);
_acceptFd = IceInternal::createSocket(false, _addr);
const int sz = static_cast<int>(_acceptBuf.size() / 2);
if(!AcceptEx(_fd, _acceptFd, &_acceptBuf[0], 0, sz, sz, &_info.count, &_info))
{
if(!IceInternal::wouldBlock())
{
SocketException ex(__FILE__, __LINE__);
ex.error = IceInternal::getSocketErrno();
throw ex;
}
}
}
void
IceSSL::AcceptorI::finishAccept()
{
if(static_cast<int>(_info.count) == SOCKET_ERROR || _fd == INVALID_SOCKET)
{
IceInternal::closeSocketNoThrow(_acceptFd);
_acceptFd = INVALID_SOCKET;
_acceptError = _info.error;
}
}
#endif
IceInternal::TransceiverPtr
IceSSL::AcceptorI::accept()
{
//
// The plug-in may not be initialized.
//
if(!_instance->initialized())
{
PluginInitializationException ex(__FILE__, __LINE__);
ex.reason = "IceSSL: plug-in is not initialized";
throw ex;
}
#ifndef ICE_USE_IOCP
SOCKET fd = IceInternal::doAccept(_fd);
#else
if(_acceptFd == INVALID_SOCKET)
{
SocketException ex(__FILE__, __LINE__);
ex.error = _acceptError;
throw ex;
}
if(setsockopt(_acceptFd, SOL_SOCKET, SO_UPDATE_ACCEPT_CONTEXT, (char*)&_acceptFd, sizeof(_acceptFd)) ==
SOCKET_ERROR)
{
IceInternal::closeSocketNoThrow(_acceptFd);
_acceptFd = INVALID_SOCKET;
SocketException ex(__FILE__, __LINE__);
ex.error = IceInternal::getSocketErrno();
throw ex;
}
SOCKET fd = _acceptFd;
_acceptFd = INVALID_SOCKET;
#endif
if(_instance->traceLevel() >= 1)
{
Trace out(_instance->logger(), _instance->traceCategory());
out << "attempting to accept " << _instance->protocol() << " connection\n" << IceInternal::fdToString(fd);
}
//
// SSL handshaking is performed in TransceiverI::initialize, since
// accept must not block.
//
return new TransceiverI(_instance, fd, _adapterName);
}
string
IceSSL::AcceptorI::protocol() const
{
return _instance->protocol();
}
string
IceSSL::AcceptorI::toString() const
{
return IceInternal::addrToString(_addr);
}
int
IceSSL::AcceptorI::effectivePort() const
{
if(_addr.saStorage.ss_family == AF_INET)
{
return ntohs(_addr.saIn.sin_port);
}
else
{
return ntohs(_addr.saIn6.sin6_port);
}
}
IceSSL::AcceptorI::AcceptorI(const InstancePtr& instance, const string& adapterName, const string& host, int port) :
_instance(instance),
_adapterName(adapterName),
_addr(IceInternal::getAddressForServer(host, port, instance->protocolSupport(), instance->preferIPv6()))
#ifdef ICE_USE_IOCP
, _acceptFd(INVALID_SOCKET),
_info(IceInternal::SocketOperationRead)
#endif
{
#ifdef SOMAXCONN
_backlog = instance->properties()->getPropertyAsIntWithDefault("Ice.TCP.Backlog", SOMAXCONN);
#else
_backlog = instance->properties()->getPropertyAsIntWithDefault("Ice.TCP.Backlog", 511);
#endif
IceInternal::ProtocolSupport protocol = instance->protocolSupport();
_fd = IceInternal::createServerSocket(false, _addr, protocol);
#ifdef ICE_USE_IOCP
_acceptBuf.resize((sizeof(sockaddr_storage) + 16) * 2);
#endif
IceInternal::setBlock(_fd, false);
IceInternal::setTcpBufSize(_fd, _instance->properties(), _instance->logger());
#ifndef _WIN32
//
// Enable SO_REUSEADDR on Unix platforms to allow re-using the
// socket even if it's in the TIME_WAIT state. On Windows,
// this doesn't appear to be necessary and enabling
// SO_REUSEADDR would actually not be a good thing since it
// allows a second process to bind to an address even it's
// already bound by another process.
//
// TODO: using SO_EXCLUSIVEADDRUSE on Windows would probably
// be better but it's only supported by recent Windows
// versions (XP SP2, Windows Server 2003).
//
IceInternal::setReuseAddress(_fd, true);
#endif
if(_instance->traceLevel() >= 2)
{
Trace out(_instance->logger(), _instance->traceCategory());
out << "attempting to bind to " << _instance->protocol() << " socket " << toString();
}
const_cast<IceInternal::Address&>(_addr) = IceInternal::doBind(_fd, _addr);
}
IceSSL::AcceptorI::~AcceptorI()
{
assert(_fd == INVALID_SOCKET);
#ifdef ICE_USE_IOCP
assert(_acceptFd == INVALID_SOCKET);
#endif
}
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