win_net.cpp

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/* ***** BEGIN LICENSE BLOCK ***** 
 * Version: RCSL 1.0/RPSL 1.0 
 *  
 * Portions Copyright (c) 1995-2002 RealNetworks, Inc. All Rights Reserved. 
 *      
 * The contents of this file, and the files included with this file, are 
 * subject to the current version of the RealNetworks Public Source License 
 * Version 1.0 (the "RPSL") available at 
 * http://www.helixcommunity.org/content/rpsl unless you have licensed 
 * the file under the RealNetworks Community Source License Version 1.0 
 * (the "RCSL") available at http://www.helixcommunity.org/content/rcsl, 
 * in which case the RCSL will apply. You may also obtain the license terms 
 * directly from RealNetworks.  You may not use this file except in 
 * compliance with the RPSL or, if you have a valid RCSL with RealNetworks 
 * applicable to this file, the RCSL.  Please see the applicable RPSL or 
 * RCSL for the rights, obligations and limitations governing use of the 
 * contents of the file.  
 *  
 * This file is part of the Helix DNA Technology. RealNetworks is the 
 * developer of the Original Code and owns the copyrights in the portions 
 * it created. 
 *  
 * This file, and the files included with this file, is distributed and made 
 * available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 
 * EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS ALL SUCH WARRANTIES, 
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS 
 * FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 
 * 
 * Technology Compatibility Kit Test Suite(s) Location: 
 *    http://www.helixcommunity.org/content/tck 
 * 
 * Contributor(s): 
 *  
 * ***** END LICENSE BLOCK ***** */ 

#include "hxtypes.h"

#ifdef _WIN16
#include <stdlib.h>
#endif _WIN16

#include <stdio.h>
#include <string.h>

/* mcast_multiple_if test */
#ifndef _WINCE
#include <iostream.h>
#include <winsock2.h>
#include <ws2tcpip.h>
#endif /* _WINCE */

#include "hxslist.h"
#include "platform/win/sock.h"
#include "platform/win/hxsock.h"		//  Low level socket calls

#include "hxthread.h"
#include "hxcom.h"
#include "hxengin.h"
#include "threngin.h"

#include "platform/win/win_net.h"      //  Our declaration
#include "platform/win/casynnet.h"     //  Declaration of async socket notifier
#include "netbyte.h"
#include "hxbuffer.h"
#include "timebuff.h"
#include "hxtick.h"
#include "debugout.h"		//  Debug macros
#include "hxstrutl.h"

#include "hxheap.h"
#include "thrdconn.h"

#ifdef _DEBUG
#undef HX_THIS_FILE		
static const char HX_THIS_FILE[] = __FILE__;
#endif									 

static WinsockManager OnlyOneOfThisInTheWholeProgram;

//#define _LOGSMIL    1
win_net::win_net() 			     // PostThreadMessage
{
    set_sock( INVALID_SOCKET );
    mLastError	    = HXR_OK;
    callRaConnect   = 1;    
    bReadyToWrite   = 0;
    m_SocketState   = CONN_CLOSED;
#ifndef WIN32_PLATFORM_PSPC
    m_hAsyncHandle  = NULL;
#endif

    m_AsyncAddress  = NULL;
    CurrentAddr	    = 0;
    m_DNSOnly	    = FALSE;
    m_pAsyncHost    = NULL;
    InBlockingMode  = 0;
    m_lRefCount	    = 0;

    m_pInBuffer = new char[TCP_BUF_SIZE];

    m_bReuseAddr = FALSE;
    m_bReusePort = FALSE;
    m_bIgnoreWSAECONNRESET = FALSE;
}

win_net::~win_net() 
{
#ifndef WIN32_PLATFORM_PSPC
    m_AsyncNotifier = CAsyncSockN::GetCAsyncSockNotifier( m_hInst , FALSE);
    if (m_AsyncNotifier)
    {
	m_AsyncNotifier->CancelSelect( this );
    }
#endif

    m_SocketState = CONN_CLOSING;
    if ((get_sock() != INVALID_SOCKET) && sockObj)       
    {       
	if (sockObj->HXclosesocket(get_sock()))
	{
	    int code = 0;
	    code = sockObj->HXWSAGetLastError();
	}    
    }

    set_sock( INVALID_SOCKET );
    m_SocketState = CONN_CLOSED;
    mConnectionOpen = 0;

    if (m_AsyncAddress)
    {
	delete [] m_AsyncAddress;
	m_AsyncAddress = NULL;
    }

    HX_VECTOR_DELETE(m_pAsyncHost);

    delete[] m_pInBuffer;
}

win_net * win_net::new_socket(UINT16 type)
{
    win_net* c = NULL;

    if (sockObj)
    { 
	switch(type)
	{
	case HX_TCP_SOCKET:
	    c = new win_TCP;
	    break;
		
	case HX_UDP_SOCKET:
	    c = new win_UDP;
	    break;
	}
    }

    return(c);
}


// init_drivers() should do any network driver initialization here
// params is a pointer to a platform specfic defined struct that 
// contains an required initialization data

HX_RESULT win_net::init_drivers(void *params)
{
    if(!sockObj)
      sockObj = new CHXSock;  

    if(!sockObj)
      return(HXR_OUTOFMEMORY);

    return(HXR_OK);
}


/* 	close_drivers() should close any network drivers used by the program
 	NOTE: The program MUST not make any other calls to the network drivers
 	until init_drivers() has been called */

HX_RESULT win_net::close_drivers(void *params)
{
    if(sockObj)
    {
	sockObj->HXWSACleanup();
	delete sockObj;
	sockObj = NULL;
    }  
    return(HXR_OK);
}


HX_RESULT win_net::host_to_ip_str( char *host, char *ip, UINT32 ulIPBufLen)
{
    ULONG32		dwAddress;
    IN_ADDR		rInAddress;
    HX_RESULT	theErr;
    PHOSTENT	pHostEntry;

    theErr = HXR_OK;

    //	Let's look for this in the cache first
    if (conn::is_cached( host, &dwAddress))
    {
	//	Found it, copy the 32bit address into rInAddress w/o calling memcpy()
	rInAddress = *(IN_ADDR *)&dwAddress;
    }
    else
    {
	//	Do DNS on the host name
	if (!(pHostEntry = sockObj->HXgethostbyname( host )))
	{
	    //	Error
	    theErr = HXR_DNR;
	}

	//	Return w/o attempting any copies if there's an error
	if (HXR_OK != theErr)
	{
	    goto FuncExit;
	}
	
	//	copy the ip address into rInAddress w/o calling memcpy()
	rInAddress = *(IN_ADDR *)(pHostEntry->h_addr);
    }

    //	Convert the ULONG32 IP address into a string and copy it into ip
    SafeStrCpy( ip, sockObj->HXinet_ntoa( rInAddress ) , ulIPBufLen);

    //	Single exit point
FuncExit:
    return( theErr );
}


ULONG32 win_net::AddRef()
{
    return InterlockedIncrement(&m_lRefCount);
}

ULONG32 win_net::Release()
{
    if (InterlockedDecrement(&m_lRefCount) > 0)
    {
        return m_lRefCount;
    }

    delete this;
    return 0;
}

HX_RESULT win_net::init_win(UINT16 type, UINT32 local_addr, 
			    UINT16 port, UINT16 blocking)
{                                        
    int            s;

    s = sockObj->HXsocket(PF_INET, type, 0);
    if (s == INVALID_SOCKET) 
    {
	mLastError = HXR_NET_SOCKET_INVALID;
	return mLastError;
    }

    InBlockingMode = 1;
	     
    {
	struct linger Ling;
	Ling.l_onoff = 0;
	Ling.l_linger = 0;
	if (callRaConnect && sockObj->HXsetsockopt(s, SOL_SOCKET, SO_LINGER, 
			     (char *)&Ling, sizeof(Ling)) != 0)
	{                 
	    if(!InBlockingMode)
		return HXR_BLOCK_CANCELED;                      
	    int code;
	    code = sockObj->HXWSAGetLastError(); 
	    mLastError = HXR_NET_SOCKET_INVALID;
	    InBlockingMode = 0;
	    return mLastError;
	}
    }
	
    if(!InBlockingMode)
	return HXR_BLOCK_CANCELED;
	    
    InBlockingMode = 0;
 
    { 
	if (sockObj->HXsetsockopt(s, SOL_SOCKET, SO_REUSEADDR, 
		                      (const char *)&m_bReuseAddr, sizeof(m_bReuseAddr)) != 0)
	{
   	    int code;
	    code = sockObj->HXWSAGetLastError(); 
	    mLastError = HXR_NET_SOCKET_INVALID;
	    return mLastError;
	}

// Reuse port is not supported on win's right now...
/*
	if (sockObj->HXsetsockopt(s, SOL_SOCKET, SO_REUSEPORT, 
		                      (const char *)&m_bReusePort, sizeof(m_bReusePort)) != 0)
	{
   	    int code;
	    code = sockObj->HXWSAGetLastError(); 
	    mLastError = HXR_NET_SOCKET_INVALID;
	    return mLastError;
	}
*/	
    }    
    
    struct sockaddr_in	SockAddr;
    memset(&SockAddr, 0, sizeof(SockAddr));
    SockAddr.sin_family = AF_INET;
    
    SockAddr.sin_addr.s_addr = sockObj->HXhtonl(local_addr);
    SockAddr.sin_port = sockObj->HXhtons(port);
    if (sockObj->HXbind(s, (sockaddr*)&SockAddr, sizeof(SockAddr)) < 0) 
    {
	//perror("bind");
	goto err;
    } 

    {
	unsigned long lMode = 1;                                                            
	if (!blocking && sockObj->HXioctlsocket(s, FIONBIO, &lMode) < 0) 
	{
	    goto err;
	}    
    }

    if (!callRaConnect)
    {
	m_SocketState = CONN_OPEN;
    }
    else
    {
	m_SocketState = CONN_NO_CONN;
    }

    set_sock( s );
    return HXR_OK;
err:
    sockObj->HXclosesocket(s);
    mLastError = HXR_NET_CONNECT;
    return mLastError;
}

HX_RESULT win_net::connect(const char* host, UINT16 port, UINT16 blocking, ULONG32 ulPlatform)
{   
    DEBUGOUTSTR( "win_net::connect()\r\n" );

    m_hInst = (HINSTANCE)ulPlatform;

    if (!blocking)
    {
#ifndef WIN32_PLATFORM_PSPC
	return( ConnectAsync( host, port ) );
#else
	HX_ASSERT(0 && "No Async connect");
#endif
    }
    else
    {
	bReadyToWrite = 0;

	if(!host)                 
	{
	    mLastError = HXR_DNR;
	    return mLastError;
	}
	    
	if(get_sock() < 0)                 
	{
	    mLastError = HXR_NET_SOCKET_INVALID;
	    return mLastError;
	}
	    
	struct in_addr addr;
        char* pTemp = strrchr(host, '.');
        if (pTemp && isdigit(*(pTemp + 1)))
	{   /* IP address. */
	    InBlockingMode = 1;
	    addr.s_addr = sockObj->HXinet_addr(host);
	    
	    if(!InBlockingMode)
		return HXR_BLOCK_CANCELED;
	    
	    InBlockingMode = 0;
	    
	    if ((UINT)addr.s_addr == (UINT)-1) 
	    {
		mLastError = HXR_DNR;
		return mLastError;
	    }
	    m_SocketState = CONN_CONNECT_INPROG;
	} 
	else
	{   /* Host name. */
	    InBlockingMode = 1;
	    struct hostent *h = sockObj->HXgethostbyname(host);
	    
	    if(!InBlockingMode)
		return HXR_BLOCK_CANCELED;
		
	    InBlockingMode = 0;
	    if (!h || !h->h_addr ) 
	    {
		mLastError = HXR_DNR;
		return mLastError;
	    }
	    memcpy(&addr, h->h_addr, sizeof(struct in_addr)); /* Flawfinder: ignore */
	    
	    // Rahul
	    m_AsyncPort = port;
	    if (m_pAsyncHost != host)
	    {
		HX_VECTOR_DELETE(m_pAsyncHost);
		m_pAsyncHost = ::new_string(host);
	    }
	}                    
	    
	struct sockaddr_in	SockAddr;
	memset(&SockAddr, 0, sizeof(SockAddr));
	SockAddr.sin_family = AF_INET;
	SockAddr.sin_addr.s_addr = *(long*)&addr;
	SockAddr.sin_port = sockObj->HXhtons(port);

	// this stores info about current addr 
	CurrentAddr		= *(ULONG32*)&addr;
	            
	InBlockingMode = 1;                
	
	if(callRaConnect && sockObj->HXconnect(get_sock(), (sockaddr*)&SockAddr, sizeof(SockAddr)))
	{   
	    if(!InBlockingMode)
		return HXR_BLOCK_CANCELED;
		
	    InBlockingMode = 0;
	    int code;
	    code = sockObj->HXWSAGetLastError(); 
	    if(!blocking && (code == WSAEWOULDBLOCK || code == WSAEINPROGRESS))
	    {  
	       mConnectionOpen = 1;
	       return HXR_OK;
	    }   

	    mLastError = HXR_NET_CONNECT;
	    return mLastError;
	}       
	 	  
	if(!InBlockingMode)
	    return HXR_BLOCK_CANCELED;
		           
	InBlockingMode = 0;
		          
	mConnectionOpen = 1;
	m_SocketState = CONN_OPEN; 
	bReadyToWrite = 1;
#ifdef WIN32_PLATFORM_PSPC 
	// Without asyncronous notification we cannot tolerate Asyncronous connect
	// so set non-blocking here rather than at connect
	ULONG lMode = 1;
	sockObj->HXioctlsocket(get_sock(), FIONBIO, &lMode);
	if (mCallBack)
	{
	    mCallBack->Func(CONNECT_NOTIFICATION);
	}
#endif
  return HXR_OK;
    }
}

//-------------------------------------------------
#if defined(HELIX_FEATURE_NETWORK_USE_SELECT)
HX_RESULT 
win_net::WaitforSelect(void *pE,void *pC)
{
    ThreadEngine *pEngine = (ThreadEngine *)pE;
    ThreadedConn *pProcessConn = (ThreadedConn*) pC;
    if (!pEngine)
	return HXR_FAIL;

    CHXMapPtrToPtr::Iterator ndxConn;
    CHXMapPtrToPtr* pSockMap = pEngine->GetSockMap();
    fd_set readfds,exceptfds;
    BOOL bHaveSock = FALSE;
    HX_RESULT theErr = HXR_OK;

    FD_ZERO(&readfds);
    FD_ZERO(&exceptfds);
    
    for (ndxConn = pSockMap->Begin(); 
	 ndxConn != pSockMap->End(); ++ndxConn)
    {
	ThreadedConn* pConn = (ThreadedConn*) (*ndxConn);
	if (pProcessConn &&
	    pConn != pProcessConn)
	    continue; // dont process other connections while closing
	if (!pConn->connection_really_open())
	    continue;
	if (!pConn->GetActualConn())
	    continue;
	unsigned int s = pConn->get_sock();
	if (s != INVALID_SOCKET)
	{
	    FD_SET(s,&readfds);
	    FD_SET(s,&exceptfds);
	    bHaveSock = TRUE;
	}
    }
    if (!bHaveSock)
	return HXR_FAIL;

    theErr = sockObj->HXselect(NULL,&readfds,NULL,NULL/*&exceptfds*/,NULL);

    if (theErr == SOCKET_ERROR)
    {
	theErr = sockObj->HXWSAGetLastError();
    }
    else
    {
	theErr = HXR_OK;
    }

    // check for read ready
    for (ndxConn = pSockMap->Begin(); 
	 ndxConn != pSockMap->End(); ++ndxConn)
    {
	ThreadedConn* pConn = (ThreadedConn*) (*ndxConn);
	if (pProcessConn &&
	    pConn != pProcessConn)
	    continue; // dont process other connections while closing
	if (!pConn->GetActualConn())
	    continue;
	int s = pConn->get_sock();
	if (s != INVALID_SOCKET)