name.c

NETBIOS C程序源代码 用于网络通信

/*============================================================*/
/*                         Name.C                             */
/*============================================================*/

#include "netbios.h"
#include "predef.h"

/*------------------------------------------------------------*/
static  NCB	NameNcb;
/*------------------------------------------------------------*/
/*Expand User Name to Standard 16 Chars (with NULL Terminator)*/
/*------------------------------------------------------------*/
void  MakeStandardName(char far *name)
	{
	char far *p;
	int  len;

	len=_fstrlen(name);
	for(p=name+len;p<name+15;*p++=' ');
	name[15]='\0';
	}
/*------------------------------------------------------------*/
BOOL  AddName(char *Name, BYTE *NameNum)
	{
	BOOL Status;

	memset(&NameNcb,0,sizeof(NCB));
	NameNcb.NCB_COMMAND=ADD_NAME;
	strcpy((char *)NameNcb.NCB_NAME,Name);
	MakeStandardName((char far *)&NameNcb.NCB_NAME);
	NetBios((NCB far *)&NameNcb);
	while(NameNcb.NCB_CMD_CPLT==NB_COMMAND_PENDING)
		{
		Beep();
		delay(1000);
		}
	if(NameNcb.NCB_CMD_CPLT!=NB_SUCCESSFULLY_EXECUTED)
		{
		Status=FALSE;
		}
	else
		{
		Status=TRUE;
		}
	*NameNum=NameNcb.NCB_NUM;
	return(status);
	}
/*------------------------------------------------------------*/
BOOL  DelName(char *Name)
	{
	BOOL Status;

	memset(&NameNcb,0,sizeof(NCB));
	NameNcb.NCB_COMMAND=DELETE_NAME;
	strcpy((char *)NameNcb.NCB_NAME,Name);
	MakeStandardName((char far *)&NameNcb.NCB_NAME);
	NetBios((NCB far *)&NameNcb);
	while(NameNcb.NCB_CMD_CPLT==NB_COMMAND_PENDING)

	if(NameNcb.NCB_CMD_CPLT!=NB_SUCCESSFULLY_EXECUTED)
		{
		Status=FALSE;
		}
	else
		{
		Status=TRUE;
		}
	return(status);
	}
/*------------------------------------------------------------*/
BOOL  Determine_Name()
	{
	char Buffer[40];
	char StatusStr[80];
	char ID[2];
	int  i;
	BYTE NameNum;
	BOOL State;

	Get_Status_Bar(StatusStr);
	Set_Status_Bar("Trying to determine Current User Name...");
	State=FALSE;
	strcpy(ID,"A");
	for(i=0;i<10 && !State;i++)
		{
		strcpy(Buffer,"PhoneUser_");
		strcat(Buffer,ID);
		if(AddName(Buffer,&NameNum)==True)
			{
			strcpy(SelfName,Buffer);
			SelfNameNum=NameNum;
			State=TRUE;
			}
		else
			{
			ID[0]++;
			}
		}
	Set_Status_Bar(StatusStr);
	return(State);
	}
/*------------------------------------------------------------*/
/*       Trying to Change the Machine Name to a new one        */
/*------------------------------------------------------------*/
void  Change_Name()
	{
	char Buffer[40];
	char StatusStr[80];
	int  i;
	BYTE NameNum;

	Get_Status_Bar(StatusStr);
	Set_Status_Bar("Please Enter Current New User Name...");

	for(i=55;i<=78;i++)
		{
		Put_Char(i,1,' ',INPUT_FCOLOR,INPUT_BCOLOR);
		}
	textcolor(INPUT_FCOLOR);
	textbackground(INPUT_BCOLOR);
	gotoxy(56,2);
	Buffer[0]=16;
	cgets(Buffer);
	memmove(&Buffer[0],&Buffer[2],strlen(&Buffer[2])+1);
	Beep();
	for(i=55;i<=78;i++)
	    {
	    Put_Char(i,1,' ',BLACK,BLACK);
	    }	
	gotoxy(1,1);

	if(EmptyStr(Buffer))
	    {
	    Set_Status_Bar("Empty Name are entered! Invalid! Press Any Key...");
	    getch();
	    }
	else
	    {
	    if(StrEqual(Buffer,SelfName))
		{
		Set_Status_Bar("New and Old Name are identical! No change! Press Any Key ...");
		getch();
		}
	    else
		{
		Set_Status_Bar("Now we are changing name to the new one...");
		if(AddName(Buffer,&NameNum)==True)
		    {
		    SelfNameNum=NameNum;	//Cancel Receive Datagram Command of OldName,
		    Receive_All_Message();	//And Hook Up Another Command with the New One.

		    DelName(SelfName);		//Delete the Old Name.
		    strcpy(SelfName,Buffer);
		    Set_Status_Bar("Canging Name Successfully! Press Any Key...");
		    getch();
		    }
		else
		    {
		    Set_Status_Bar("Canging Name Failed! Duplicated! Press Any Key...");
		    getch();
		    }		    
		}
	    }
	Refresh_Screen(StatusStr);
	}
/*------------------------------------------------------------*/