telnetd.h File Reference

#include <stdio.h>
#include <stdlib.h>
#include <windef.h>
#include <winbase.h>
#include <wincon.h>
#include <winsock2.h>
#include <strsafe.h>

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Classes
struct	client_s

Macros
#define	_CRT_SECURE_NO_WARNINGS
#define	WIN32_NO_STATUS
#define	_INC_WINDOWS
#define	TELNET_PORT   (23)
#define	BUFSIZE   (4096)
#define	USERID_SIZE   (64)
#define	CTRLC   (3)
#define	BS   (8)
#define	CR   (13)
#define	LF   (10)
#define	DEL   (127)
#define	IAC   "\xff"
#define	DONT   "\xfe"
#define	WONT   "\xfc"
#define	WILL   "\xfb"
#define	DO   "\xfd"
#define	SB   "\xfa"
#define	SE   "\xf0"
#define	ECHO   "\x01"
#define	SUPPRESS_GO_AHEAD   "\x03"
#define	TERMINAL_TYPE   "\x18"
#define	NAWS   "\x1f"
#define	LINEMODE   "\x22"
#define	NEWENVIRON   "\x27"
#define	MODE   "\x01"
#define	HANDSHAKE_TIMEOUT   (3)

Typedefs
typedef struct client_s	client_t

Enumerations
enum	EchoMode { NoEcho = 0 , Echo = 1 , Password = 2 }

Functions
static BOOL WINAPI	Cleanup (DWORD dwControlType)
static void	WaitForConnect (void)
static BOOLEAN	StartSocketInterface (void)
static void	CreateSocket (void)
static void	UserLogin (int client_socket)
static DWORD WINAPI	UserLoginThread (LPVOID)
static int	DoTelnetHandshake (int sock)
static int	ReceiveLine (int sock, char *buffer, int len, EchoMode echo)
static void	RunShell (client_t *client)
static DWORD WINAPI	MonitorChildThread (LPVOID)
static DWORD WINAPI	WriteToPipeThread (LPVOID)
static DWORD WINAPI	ReadFromPipeThread (LPVOID)
static void	TerminateShell (client_t *client)
static VOID	ErrorExit (LPTSTR)
int	kickoff_telnetd (void)

Macro Definition Documentation

_CRT_SECURE_NO_WARNINGS

#define _CRT_SECURE_NO_WARNINGS

Definition at line 3 of file telnetd.h.

_INC_WINDOWS

#define _INC_WINDOWS

Definition at line 10 of file telnetd.h.

BS

#define BS   (8)

Definition at line 22 of file telnetd.h.

BUFSIZE

#define BUFSIZE   (4096)

Definition at line 19 of file telnetd.h.

CR

#define CR   (13)

Definition at line 23 of file telnetd.h.

CTRLC

#define CTRLC   (3)

Definition at line 21 of file telnetd.h.

DEL

#define DEL   (127)

Definition at line 25 of file telnetd.h.

DO

#define DO   "\xfd"

Definition at line 31 of file telnetd.h.

DONT

#define DONT   "\xfe"

Definition at line 28 of file telnetd.h.

ECHO

#define ECHO   "\x01"

Definition at line 34 of file telnetd.h.

HANDSHAKE_TIMEOUT

#define HANDSHAKE_TIMEOUT   (3)

Definition at line 42 of file telnetd.h.

IAC

#define IAC   "\xff"

Definition at line 27 of file telnetd.h.

LF

#define LF   (10)

Definition at line 24 of file telnetd.h.

LINEMODE

#define LINEMODE   "\x22"

Definition at line 38 of file telnetd.h.

MODE

#define MODE   "\x01"

Definition at line 40 of file telnetd.h.

NAWS

#define NAWS   "\x1f"

Definition at line 37 of file telnetd.h.

NEWENVIRON

#define NEWENVIRON   "\x27"

Definition at line 39 of file telnetd.h.

SB

#define SB   "\xfa"

Definition at line 32 of file telnetd.h.

SE

#define SE   "\xf0"

Definition at line 33 of file telnetd.h.

SUPPRESS_GO_AHEAD

#define SUPPRESS_GO_AHEAD   "\x03"

Definition at line 35 of file telnetd.h.

TELNET_PORT

#define TELNET_PORT   (23)

Definition at line 17 of file telnetd.h.

TERMINAL_TYPE

#define TERMINAL_TYPE   "\x18"

Definition at line 36 of file telnetd.h.

USERID_SIZE

#define USERID_SIZE   (64)

Definition at line 20 of file telnetd.h.

WILL

#define WILL   "\xfb"

Definition at line 30 of file telnetd.h.

WIN32_NO_STATUS

#define WIN32_NO_STATUS

Definition at line 4 of file telnetd.h.

WONT

#define WONT   "\xfc"

Definition at line 29 of file telnetd.h.

Typedef Documentation

client_t

typedef struct client_s client_t

Enumeration Type Documentation

EchoMode

enum EchoMode

Enumerator
NoEcho
Echo
Password

Definition at line 61 of file telnetd.h.

{
  NoEcho = 0,
  Echo = 1,
  Password = 2
} EchoMode;

Function Documentation

Cleanup()

static BOOL WINAPI Cleanup ( DWORD  dwControlType )

static

CreateSocket()

static void CreateSocket ( void  )

static

DoTelnetHandshake()

static int DoTelnetHandshake ( int  sock )

static

ErrorExit()

static VOID ErrorExit ( LPTSTR  )

static

kickoff_telnetd()

int kickoff_telnetd

(

void

)

Definition at line 48 of file telnetd.c.

{
  printf("Attempting to start Simple TelnetD\n");
 
//  DetectPlatform();
  SetConsoleCtrlHandler(Cleanup, 1);
 
  if (!StartSocketInterface())
    ErrorExit("Unable to start socket interface\n");
 
  CreateSocket();
 
  while(!bShutdown) {
    WaitForConnect();
  }
 
  WSACleanup();
  return 0;
}

MonitorChildThread()

static DWORD WINAPI MonitorChildThread ( LPVOID  )

static

ReadFromPipeThread()

static DWORD WINAPI ReadFromPipeThread ( LPVOID  )

static

ReceiveLine()

static int ReceiveLine ( int  sock, char *  buffer, int  len, EchoMode  echo  )

static

RunShell()

static void RunShell ( client_t *  client )

static

StartSocketInterface()

static BOOLEAN StartSocketInterface ( void  )

static

TerminateShell()

static void TerminateShell ( client_t *  client )

static

UserLogin()

static void UserLogin ( int  client_socket )

static

UserLoginThread()

static DWORD WINAPI UserLoginThread ( LPVOID  )

static

WaitForConnect()

static void WaitForConnect ( void  )

static

WriteToPipeThread()

static DWORD WINAPI WriteToPipeThread ( LPVOID  )

static