//
// Function: PrintNameInfo
//
// Description:
// Prints out a NetBIOS name and its related information
//
void PrintNameInfo(NAME_BUFFER *names, int namecount)
{
char namebuff[NCBNAMSZ + 1];
int i;
if (namecount == 0)
{
printf("No names in local name table\n\n\n");
return;
}
printf("\nName Type Number Flags\n");
for(i=0; i < namecount ;i++)
{
FormatNetbiosName(names[i].name, namebuff);
printf("%s <%02x> %-2d ", namebuff,
names[i].name[NCBNAMSZ-1], names[i].name_num);
if (names[i].name_flags & REGISTERING)
printf("Registering ");
else if (names[i].name_flags & REGISTERED)
printf("Registered ");
else if (names[i].name_flags & DEREGISTERED)
printf("Deregistered ");
else if (names[i].name_flags & DUPLICATE)
printf("Duplicate ");
else if (names[i].name_flags & DUPLICATE_DEREG)
printf("Duplicate-Deregistered ");
if (names[i].name_flags & GROUP_NAME)
printf("Group-Name ");
printf("\n");
}
printf("\n\n");
}
//
// Function: ClientThread
//
// Description:
// This thread takes the NCB structure of a connected session
// and waits for incoming data which it then sends back to the
// client until the session is closed.
//
DWORD WINAPI ClientThread(PVOID lpParam)
{
PNCB pncb = (PNCB)lpParam;
NCB ncb;
char szRecvBuff[MAX_BUFFER],
szClientName[NCBNAMSZ + 1];
DWORD dwBufferLen = MAX_BUFFER,
dwRetVal = NRC_GOODRET;
// Send and receive messages until the session is closed
//
FormatNetbiosName(pncb->ncb_callname, szClientName);
while (1)
{
dwBufferLen = MAX_BUFFER;
dwRetVal = Recv(pncb->ncb_lana_num, pncb->ncb_lsn,
szRecvBuff, &dwBufferLen);
if (dwRetVal != NRC_GOODRET)
break;
szRecvBuff[dwBufferLen] = 0;
printf("READ [LANA=%d]: '%s'\n", pncb->ncb_lana_num,
szRecvBuff);
dwRetVal = Send(pncb->ncb_lana_num, pncb->ncb_lsn,
szRecvBuff, dwBufferLen);
if (dwRetVal != NRC_GOODRET)
break;
}
printf("Client '%s' on LANA %d disconnected\n", szClientName,
pncb->ncb_lana_num);
//
// If the error returned from a read or write is NRC_SCLOSED then
// all is well; otherwise some other error occured so hangup the
// connection from this side.
//
if (dwRetVal != NRC_SCLOSED)
{
ZeroMemory(&ncb, sizeof(NCB));
ncb.ncb_command = NCBHANGUP;
ncb.ncb_lsn = pncb->ncb_lsn;
ncb.ncb_lana_num = pncb->ncb_lana_num;
if (Netbios(&ncb) != NRC_GOODRET)
{
printf("ERROR: Netbios: NCBHANGUP: %d\n",
ncb.ncb_retcode);
GlobalFree(pncb);
dwRetVal = ncb.ncb_retcode;
}
}
// The NCB structure passed in is dynamically allocated it so
// delete it before we go.
//
GlobalFree(pncb);
return NRC_GOODRET;
}
//
// Function: ClientThread
//
// Description:
// The client thread blocks for data sent from clients and
// simply sends it back to them. This is a continuous loop
// until the sessions is closed or an error occurs. If
// the read or write fails with NRC_SCLOSED then the session
// has closed gracefully so exit the loop.
//
DWORD WINAPI ClientThread(PVOID lpParam)
{
PNCB pncb = (PNCB)lpParam;
NCB ncb;
char szRecvBuff[MAX_BUFFER];
DWORD dwBufferLen=MAX_BUFFER,
dwRetVal=NRC_GOODRET;
char szClientName[NCBNAMSZ+1];
FormatNetbiosName(pncb->ncb_callname, szClientName);
while (1)
{
dwBufferLen = MAX_BUFFER;
dwRetVal = Recv(pncb->ncb_lana_num, pncb->ncb_lsn, szRecvBuff,
&dwBufferLen);
if (dwRetVal != NRC_GOODRET)
break;
szRecvBuff[dwBufferLen] = 0;
printf("READ [LANA=%d]: '%s'\n", pncb->ncb_lana_num,
szRecvBuff);
dwRetVal = Send(pncb->ncb_lana_num, pncb->ncb_lsn, szRecvBuff,
dwBufferLen);
if (dwRetVal != NRC_GOODRET)
break;
}
printf("Client '%s' on LANA %d disconnected\n", szClientName,
pncb->ncb_lana_num);
if (dwRetVal != NRC_SCLOSED)
{
// Some other error occured, hang up the connection
//
ZeroMemory(&ncb, sizeof(NCB));
ncb.ncb_command = NCBHANGUP;
ncb.ncb_lsn = pncb->ncb_lsn;
ncb.ncb_lana_num = pncb->ncb_lana_num;
if (Netbios(&ncb) != NRC_GOODRET)
{
printf("ERROR: Netbios: NCBHANGUP: %d\n", ncb.ncb_retcode);
dwRetVal = ncb.ncb_retcode;
}
GlobalFree(pncb);
return dwRetVal;
}
GlobalFree(pncb);
return NRC_GOODRET;
}