base/services/telnetd/telnetd.h

   1 #pragma once
   2
   3 #define _CRT_SECURE_NO_WARNINGS
   4
   5 #define WIN32_NO_STATUS
   6 #include <stdio.h>
   7 #include <winsock2.h>
   8 #include <tchar.h>
   9 #include <time.h>
  10
  11 /*
  12 ** macro definitions
  13 */
  14 #define TELNET_PORT      (23)
  15
  16 #define BUFSIZE        (4096)
  17 #define USERID_SIZE      (64)
  18 #define CTRLC             (3)
  19 #define BS                (8)
  20 #define CR               (13)
  21 #define LF               (10)
  22 #define DEL             (127)
  23
  24 #define IAC "\xff"
  25 #define DONT "\xfe"
  26 #define WONT "\xfc"
  27 #define WILL "\xfb"
  28 #define DO "\xfd"
  29 #define SB "\xfa"
  30 #define SE "\xf0"
  31 #define ECHO "\x01"
  32 #define SUPPRESS_GO_AHEAD "\x03"
  33 #define TERMINAL_TYPE "\x18"
  34 #define NAWS "\x1f"
  35 #define LINEMODE "\x22"
  36 #define NEWENVIRON "\x27"
  37 #define MODE "\x01"
  38
  39 #define HANDSHAKE_TIMEOUT (3)
  40
  41 /*
  42 ** types
  43 */
  44
  45 typedef struct client_s
  46 {
  47   char     userID[USERID_SIZE];
  48   int      socket;
  49   BOOLEAN  bTerminate;
  50   BOOLEAN  bReadFromPipe;
  51   BOOLEAN  bWriteToPipe;
  52   HANDLE   hProcess;
  53   DWORD    dwProcessId;
  54   HANDLE   hChildStdinWr;
  55   HANDLE   hChildStdoutRd;
  56 } client_t;
  57
  58 typedef enum
  59 {
  60   NoEcho = 0,
  61   Echo = 1,
  62   Password = 2
  63 } EchoMode;
  64
  65 /*
  66 ** Forward function declarations
  67 */
  68 static BOOL WINAPI Cleanup(DWORD dwControlType);
  69 static void WaitForConnect(void);
  70 static BOOLEAN StartSocketInterface(void);
  71 static void CreateSocket(void);
  72 static void UserLogin(int client_socket);
  73 static DWORD WINAPI UserLoginThread(LPVOID);
  74 static int DoTelnetHandshake(int sock);
  75 static int ReceiveLine(int sock, char *buffer, int len, EchoMode echo);
  76 static void RunShell(client_t *client);
  77 //static BOOL CreateChildProcess(const char *);
  78 static DWORD WINAPI MonitorChildThread(LPVOID);
  79 static DWORD WINAPI WriteToPipeThread(LPVOID);
  80 static DWORD WINAPI ReadFromPipeThread(LPVOID);
  81 static void TerminateShell(client_t *client);
  82 static VOID ErrorExit(LPTSTR);
  83 int kickoff_telnetd(void);