timerecv.cpp

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#include <windows.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <nb30.h>
#pragma comment(lib,"netapi32.lib")
#define MAXSESSIONS 2
#define MAXNAMES 4

UCHAR LanaEnum(LANA_ENUM *lenum)
{
	NCB ncb;
	UCHAR ucRc;
	memset(&ncb,0,sizeof(NCB));
	ncb.ncb_command=NCBENUM;
	ncb.ncb_buffer=(PUCHAR)lenum;
	ncb.ncb_length=sizeof(LANA_ENUM);
	ucRc=Netbios(&ncb);
	return(ucRc);
}

UCHAR RestNCB(UCHAR lana)
{
	NCB ncb;
	UCHAR ucRc;
	memset(&ncb,0,sizeof(NCB));
	ncb.ncb_command=NCBRESET;
	ncb.ncb_callname[0]=MAXSESSIONS;
	ncb.ncb_callname[2]=MAXNAMES;
//	ncb.ncb_callname[3]=TRUE;
	ncb.ncb_lana_num=lana;
	ucRc=Netbios(&ncb);
	return(ucRc);
}

UCHAR AddName(UCHAR *Name,UCHAR Lana,UCHAR *NameNum)
{
	NCB ncb;
	memset(&ncb,0,sizeof(NCB));
	ncb.ncb_command=NCBADDNAME;
	ncb.ncb_lana_num=Lana;
	strcpy((char*)ncb.ncb_name,(const char*)Name);

	
	Netbios(&ncb);
	*NameNum=ncb.ncb_num;
	return(ncb.ncb_cmd_cplt);
}

UCHAR DeleteName(UCHAR *Name,UCHAR Lana)
{
	NCB ncb;
	memset(&ncb,0,sizeof(NCB));
	ncb.ncb_command=NCBDELNAME;
	ncb.ncb_lana_num=Lana;
	strcpy((char*)ncb.ncb_name,(const char*)Name);
	Netbios(&ncb);
	return(ncb.ncb_cmd_cplt);
}

UCHAR DatagramSend(PNCB pncb,UCHAR DestName[],UCHAR Num,UCHAR *pBuffer,WORD Length,UCHAR Lana)
{
	memset(pncb,0,sizeof(NCB));
	pncb->ncb_command=NCBDGSEND;
	strcpy((char *)pncb->ncb_callname,(const char *)DestName);
	pncb->ncb_lana_num=Lana;
	pncb->ncb_num=Num;
	pncb->ncb_buffer=pBuffer;
	pncb->ncb_length=Length;
//	pncb->ncb_cmd_cplt=0xff;
	Netbios(pncb);
	return(pncb->ncb_cmd_cplt);


}

UCHAR RecvBaseTime(PNCB pncb,UCHAR Num,UCHAR *pBuffer,UCHAR Lana)
{
	memset(pncb,0,sizeof(NCB));
	pncb->ncb_command=NCBDGRECVBC;
	pncb->ncb_lana_num=Lana;
	pncb->ncb_num=Num;
	pncb->ncb_buffer=pBuffer;
	pncb->ncb_length=512;
//	pncb->ncb_cmd_cplt=0xff;
	Netbios(pncb);
	return(pncb->ncb_cmd_cplt);
}

void main()
{
	NCB ClientNcb;
	UCHAR LocalName[16],RemoteName[16];
	UCHAR LocalNameNum;
	UCHAR buff[512];
	LANA_ENUM lenum;
	LPSYSTEMTIME lpSystemTime;

	strcpy((char *)LocalName,"swandive");
	strcpy((char *)RemoteName,"TimeServer");

	if(LanaEnum(&lenum)!=NRC_GOODRET)
	{
		printf("lanaEnum Error!\n");
		return;
	}
	printf("LanaEnum OK!\n");

	if(RestNCB(lenum.lana[0])!=NRC_GOODRET)
	{
		printf("RestNCB Error!\n");
		return ;
	}
	printf("RestNCB OK!\n");

	if(AddName(LocalName,lenum.lana[0],&LocalNameNum)!=NRC_GOODRET)
	{
		printf("AddName Error!\n");
		return;
	}
	printf("AddName OK!\n");


	if(DatagramSend(&ClientNcb,RemoteName,LocalNameNum,buff,11,lenum.lana[0])!=NRC_GOODRET)
	{
		printf("Send Error!\n");
	}
	printf("Send OK!\n");	

	for(;;)
	{
		if(RecvBaseTime(&ClientNcb,LocalNameNum,buff,lenum.lana[0])!=NRC_GOODRET)
		{
			printf("RecvBaseTime Error!\n");
			return;
		}
		printf("RecvBaseTime ok!\n");
		if(ClientNcb.ncb_cmd_cplt==0)
		{
			lpSystemTime=(LPSYSTEMTIME)buff;
			SetSystemTime(lpSystemTime);
			printf(" Time OK!\nToday is ");
			printf("%d-%d-%d",lpSystemTime->wYear,lpSystemTime->wMonth,lpSystemTime->wDay);
		}
	
	}
	
}