l3lib/devel/plugin/net/cserver.cpp

//:Source:8, "CServer", 39ab9146
//
// File: cserver.cpp
//
// Copyright (C) 2000 Piko, All rights reserved.
//
// Modification History:
// 29 Aug 2000, PIKO -- Generated 12:32:38 by Genitor V4.50.621.2
//
//:---------------------------------------------------------------------------
//:ClassInc
//#include "../lib_base.h"
#include "cserver.h"
#define OK 0
#define FAIL __LINE__
#define DebugOutLn //

//:Include
//#include "ach.h"
#if defined(_UNIX)
#include <unistd.h>
#include <memory.h>
#else
#ifdef _WIN32_WCE
#else
#include <time.h>
#endif
#endif  // defined(_UNIX)

#include <time.h>
#include <stdio.h>


int Init(int handle)
{
/*
* Force an immediate termination of the connection when closing it
	*/
	struct linger linger;
	linger.l_onoff = 1;
	linger.l_linger = 0;
	if(setsockopt (handle, SOL_SOCKET, SO_LINGER, (char *) &linger, sizeof(linger)) != 0)
	{
		DebugOutLn("failed to set socket option");
	};

		/*
		 * Force nonblocking
		 */
#ifdef _UNIX
	return fcntl( handle, F_SETFL, O_NONBLOCK|O_NOCTTY );
#else

	unsigned long Arg1=1;
	return ioctlsocket(handle, FIONBIO, &Arg1);

#endif
}


//:>                  +-----------------------------------+
//:>------------------|    Member Function Definitions    |-------------------
//:>                  +-----------------------------------+

//::1
// +-----------------------+
// |  Default Constructor  |
// +-----------------------+

CServer::CServer()
{
	m_clientlistensock=INVALID;
	m_clientlistenport=0;
	m_lasterror=0;
	m_starttime=0;

#ifndef _UNIX
	/*
	 * Setup Winsock 1.1
	 */
	WSADATA wsaData;
	WSAStartup(0x0101, &wsaData);
	if (LOBYTE(wsaData.wVersion) != 1 ||
	    HIBYTE(wsaData.wVersion) != 1) {
		DebugOutLn("winsock too old");
	    WSACleanup();
	    exit(1);
	}
#endif

}

//::2
// +--------------+
// |  Destructor  |
// +--------------+

CServer::~CServer()
{
	CloseServer();
#ifndef _UNIX
	// Cleanup Winsock
	WSACleanup();
#endif
}

//::3
// +-----------------+
// |  CloseServer()  |
// +-----------------+

void CServer::CloseServer()
{
	if(m_clientlistensock)closesocket(m_clientlistensock);
	m_clientlistensock=INVALID;
}


//::7
// +----------+
// |  Dump()  |
// +----------+





//::4
// +------------------+
// |  GetLastError()  |
// +------------------+

int CServer::GetLastError()
{
	return m_lasterror;
}

//::5
// +-------------+
// |  StartUp()  |
// +-------------+

void CServer::StartUp(
	int p_port,
	bool p_udp )				// serverport f<>r die windows clients
{
	m_lasterror=0;
	
	int rc;
	struct sockaddr_in SrvAdr;
	
	//Existierenden socket schlie<69>en
	if(m_clientlistensock!=INVALID) CloseServer();
	
	//neuen Port eintragen, socket erstellen
	m_clientlistenport = p_port;
	if( p_udp )
		m_clientlistensock = socket(AF_INET, SOCK_DGRAM, 0);
	else
		m_clientlistensock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);

	if(m_clientlistensock == -1 )
	{
	    /*
		Log << ID 
		 << "failed, cannot create socket"
		 ;
		Log.flush(LOGFILE|LOGERR);
		*/
		DebugOutLn("cannot create listen port %d",m_clientlistenport);
	    m_lasterror=-1;
	}
	else
	{
	    SrvAdr.sin_family = AF_INET;
	    SrvAdr.sin_port = htons(m_clientlistenport);
	    SrvAdr.sin_addr.s_addr = 0;
	    memset(SrvAdr.sin_zero, 0, sizeof(SrvAdr.sin_zero));
	    rc = bind(m_clientlistensock, (struct sockaddr *)&SrvAdr, sizeof(SrvAdr));
	    if(rc)
	    {
	    	closesocket(m_clientlistensock);
	    	m_clientlistensock=INVALID;
	    	//cerr << timestamp() 
		    // << ID 
		    // << "failed, cannot bind to port " 
		    // << m_clientlistenport 
		    // << endl
		    // << flush;
			DebugOutLn("cannot bind socket to port %d",m_clientlistenport);
	    	m_lasterror=rc;
	    }
	    else
	    {
			if( p_udp )
			{
#ifdef _UNIX
				m_lasterror = fcntl( m_clientlistensock, F_SETFL, O_NONBLOCK|O_NOCTTY );
#else
				unsigned long Arg1=1;
				m_lasterror = ioctlsocket(m_clientlistensock, FIONBIO, &Arg1);
#endif
			}
			else
			{
	    		//ab jetzt liegt der socket auf listen
	    		m_lasterror = listen(m_clientlistensock, SOMAXCONN);
			}

			/*
			Log
			 << ID 
			 << "successfull, listening at port " 
			 << m_clientlistenport;
			Log.flush();
			*/
			m_starttime=time(0);
	    }
	}
}

int CServer::StartUpAsClient(unsigned int ipaddr, int port, bool p_udp)
{
	m_lasterror=0;
	int rc=0;
	
	struct sockaddr_in my_addr;
	unsigned long inaddr = 0;
	//struct hostent *hp;


	/*
	 * Setup basics about server address
	 */
	memset((char *) &m_destaddr, 0, sizeof(m_destaddr));
	m_destaddr.sin_family			= AF_INET;
	//	m_destaddr.sin_addr.S_un.S_addr = htonl(ipaddr);
	m_destaddr.sin_addr.s_addr	 = htonl(ipaddr);
	m_destaddr.sin_port				= htons((u_short) port );

	/*
	 * socket <20>ffnen
	 */
	if( p_udp ){

		if ((m_clientlistensock = socket(AF_INET, SOCK_DGRAM, 0)) < 0) 
			if(rc) {
				//"open socket failed";
				DebugOutLn("open socket failed");
				return -1;
			}

	}
	else{ // tcp

		if ((m_clientlistensock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)) < 0) 
			if(rc) {
				DebugOutLn("open socket failed");
				return -1;
			}


	}

	if( p_udp == true ){
		/*
		 * Setup client address
		 */
		memset((char *) &my_addr, 0, sizeof(my_addr));
		my_addr.sin_family      = AF_INET;
		my_addr.sin_addr.s_addr = htonl(INADDR_ANY);
		my_addr.sin_port        = htons((u_short) 0 );

		rc = bind(m_clientlistensock, (struct sockaddr *)&my_addr, sizeof(my_addr));
		if(rc) {
			DebugOutLn("cannot bind port");
			return -1; //throw "cannot bind to port";
		}
		{
			/*
			Log << "failed, " << msg ;
			Log.flush(LOGFILE|LOGERR);
			*/
		}

	/*Log << ID 
				<< port 
				<< " successfull"
				;
		Log.flush();
		*/

	}
	else	
	{
		memset((char *) &my_addr, 0, sizeof(my_addr));
		my_addr.sin_addr.s_addr = m_destaddr.sin_addr.s_addr;
		my_addr.sin_family      = AF_INET;
		my_addr.sin_port        = htons(port);


		if (connect(m_clientlistensock, (struct sockaddr *) &my_addr, sizeof(my_addr)) < 0) {
			DebugOutLn("connect failed");
			return -1;//"connect failed";
		}

		Init( m_clientlistensock );	
	}



	return m_lasterror;
}


int CServer::StartUpAsClient(const char *ipaddr, int port, bool p_udp)
{
	m_lasterror=0;
	int rc=0;
	
	struct sockaddr_in my_addr;
	unsigned long inaddr = 0;
	struct hostent *hp;

	/*
	 * Setup basics about server address
	 */
	memset((char *) &m_destaddr, 0, sizeof(m_destaddr));
	m_destaddr.sin_family      = AF_INET;
	m_destaddr.sin_port        = htons((u_short) port );

	//Ipadresse eintragen
	if ( (inaddr = inet_addr(ipaddr) != INADDR_NONE) ) {
		//memcpy((char *) &m_destaddr.sin_addr, (char *) &inaddr, sizeof(inaddr));

		int ipadr,ip1,ip2,ip3,ip4;
		if( 4 == sscanf(ipaddr,"%d.%d.%d.%d",&ip1,&ip2,&ip3,&ip4)){
			ipadr = (ip1<<24)|(ip2<<16)|(ip3<<8)|ip4;
			m_destaddr.sin_addr.s_addr	 = htonl(ipadr);
		}
		else{
			DebugOutLn("gethostbyname(%s) failed",ipaddr);
			m_lasterror = -1;
			return -1;
		}

	} else {
		if ( (hp = gethostbyname(ipaddr)) == NULL) {
			DebugOutLn("gethostbyname(%s) failed",ipaddr);
			m_lasterror = -1;
			return -1;
		}
		memcpy((char *) &m_destaddr.sin_addr, hp->h_addr, hp->h_length);
	}



	/*
	 * socket <20>ffnen
	 */
	if( p_udp ){

		if ((m_clientlistensock = socket(AF_INET, SOCK_DGRAM, 0)) < 0) 
			if(rc) {
				DebugOutLn("open socket failed");
				return -1;
			}

	}
	else{ // tcp

		if ((m_clientlistensock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)) < 0) 
			if(rc) {
				DebugOutLn("open socket failed");
				return -1;
			}


	}

	if( p_udp == true ){
		/*
		 * Setup client address
		 */
		memset((char *) &my_addr, 0, sizeof(my_addr));
		my_addr.sin_family      = AF_INET;
		my_addr.sin_addr.s_addr = htonl(INADDR_ANY);
		my_addr.sin_port        = htons((u_short) 0 );

		rc = bind(m_clientlistensock, (struct sockaddr *)&my_addr, sizeof(my_addr));
		if(rc) {
			m_lasterror = -1;
			DebugOutLn("cannot bind port");
			return -1; //throw "cannot bind to port";
		}
		{
			/*
			Log << "failed, " << msg ;
			Log.flush(LOGFILE|LOGERR);
			*/
		}

	/*Log << ID 
				<< port 
				<< " successfull"
				;
		Log.flush();
		*/

	}
	else	
	{
		memset((char *) &my_addr, 0, sizeof(my_addr));
		my_addr.sin_addr.s_addr = m_destaddr.sin_addr.s_addr;
		my_addr.sin_family      = AF_INET;
		my_addr.sin_port        = htons(port);


		if (connect(m_clientlistensock, (struct sockaddr *) &my_addr, sizeof(my_addr)) < 0) {
			DebugOutLn("connect failed");
			return -1;//"connect failed";
		}
		
		Init( m_clientlistensock );
	}



	return m_lasterror;
}


int CServer::Write(char * buf,int cnt)
{
	/*if( Prefs.m_master )
		return 0;
		*/
/////DebugOutLn("Write(%d): %s",cnt,buf);
	
	if( cnt == 0 )
		cnt = strlen(buf) + 1;

	int	bytes = sendto(m_clientlistensock,buf,cnt,0,(sockaddr*)&m_destaddr,sizeof(m_destaddr));
	if( bytes != cnt )
	{
		/*
		Log << "error, send to master failed";
		Log.flush(LOGERR);
		*/
	}
	
	return bytes;
}