linux oo

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <arpa/inet.h>
#include <sys/types.h>
#include <sys/socket.h>

#include<X11/Xlib.h>
#include<X11/Xutil.h>
#include<X11/cursorfont.h>

void error_handling(char *message);
void Get_MPacket(char *buffer);
void Get_KPacket(char *buffer);
void Mouse_move(int x, int y);
void Mouse_click(int button);
void Mouse_release(int button);
void Mouse_push(int button);

typedef struct MPacket
{
  int type;
  int etype;
  int data1;
  int data2;
}MPacket;

int main(void)
{
     int serv_sock;
     int clnt_sock;
     struct sockaddr_in serv_addr;
     struct sockaddr_in clnt_addr;
     int clnt_addr_size;
     char buffer[16]={0,};
     int str_len=0;
 
     serv_sock=socket(PF_INET, SOCK_STREAM, 0); /* 서버 소켓 생성 */
 
     if(serv_sock == -1)
          error_handling("socket() error");
 
     printf("socket\n");
   
     memset(&serv_addr, 0, sizeof(serv_addr));
     serv_addr.sin_family=AF_INET;
     serv_addr.sin_addr.s_addr=htonl(INADDR_ANY);
     serv_addr.sin_port=htons(5425);
 
     if( bind(serv_sock, (struct sockaddr*) &serv_addr, sizeof(serv_addr))==-1 ) /* 소켓에 주소 할당 */
          error_handling("bind() error");
 
    printf("bind\n");
 
     if( listen(serv_sock, 5)==-1 )  /* 연결 요청 대기 상태로 진입 */
          error_handling("listen() error");
 
    printf("listen\n");
 
     clnt_addr_size=sizeof(clnt_addr);
     clnt_sock=accept(serv_sock, (struct sockaddr*)&clnt_addr,&clnt_addr_size); /* 연결 요청 수락 */
 
     if(clnt_sock==-1)
          error_handling("accept() error");

    printf("accept\n");
 
     while(1)
     {
          str_len=read(clnt_sock, buffer, sizeof(buffer)-1); /* 데이터 전송 */
         
      if(str_len == 15)
               Get_MPacket(buffer);
                   
       str_len=0;
       memset(&buffer,0, sizeof(buffer));
     }
     close(clnt_sock); /* 연결 종료 */
    
     return 0;
 }
 
 void Get_MPacket(char *buffer)
 {
      MPacket packet;
     
      packet.type =*(int*)buffer;
      packet.etype= *(int*)(buffer+4);
      packet.data1=*(int*)(buffer+8);
      packet.data2=*(int*)(buffer+12);

    if(packet.type == 0 && packet.etype==0
    && packet.data1>=0 && packet.data1<=800
    && packet.data2>=0 && packet.data2<=600)   
      {
         Mouse_move(packet.data1, packet.data2);    
        printf("%d : %d : %d : %d\n",
              packet.type, packet.etype, packet.data1, packet.data2);
     }
    else if(packet.type == 1 &&( packet.etype==1 || packet.etype==2)
    && packet.data1>=0 && packet.data1<=800
    && packet.data2>=0 && packet.data2<=600)
     {   
         Mouse_click(packet.etype); 
        printf("%d : %d : %d : %d\n",
              packet.type, packet.etype, packet.data1, packet.data2);
      }
  else if(packet.type == 2 &&( packet.etype==1 || packet.etype==2)
    && packet.data1>=0 && packet.data1<=800
    && packet.data2>=0 && packet.data2<=600)
   {
   Mouse_release(packet.etype);
   printf("%d : %d : %d : %d\n",
              packet.type, packet.etype, packet.data1, packet.data2);

   }
   else if(packet.type == 3 &&( packet.etype==1 || packet.etype==2)
    && packet.data1>=0 && packet.data1<=800
    && packet.data2>=0 && packet.data2<=600)
    {

   Mouse_push(packet.etype);
   printf("%d : %d : %d : %d\n",
              packet.type, packet.etype, packet.data1, packet.data2);
    }
 }

  void Get_KPacket(char *buffer)
 {
  KPacket packet;
 
  packet.type = *(int*)buffer;
  packet.etype = *(int*)(buffer+4);
  packet.keychar = *(char*)(buffer+8);
  
  packet.data1=*(int*)(buffer+9);// if char: Multicode
  packet.data2=*(int*)(buffer+13);
  packet.data3=*(int*)(buffer+17);
  packet.data4=*(int*)(buffer+21);
 
  printf("%d : %d : %c : %d : %d : %d : %d\n",
          packet.type, packet.etype, packet.keychar,
        packet.data1, packet.data2, packet.data3, packet.data4);
 }

 void Mouse_move(int x, int y)
 {
    Display *displayMain = XOpenDisplay(NULL);
    Window win;
   
    win=DefaultRootWindow(displayMain);
   
    XWarpPointer(displayMain, None, win, 0, 0, 0, 0, x,y);

    XCloseDisplay(displayMain);

 }

void Mouse_click(int button)
{
    Display *display = XOpenDisplay(NULL);

    XEvent event;
   
    if(display == NULL)
    {
        fprintf(stderr, "Errore nell'apertura del Display !!!\n");
    }
   
    memset(&event, 0x00, sizeof(event));
   
    event.type = ButtonPress;
    event.xbutton.button = button;
    event.xbutton.same_screen = True;
   
    XQueryPointer(display, RootWindow(display, DefaultScreen(display)), &event.xbutton.root, &event.xbutton.window, &event.xbutton.x_root, &event.xbutton.y_root, &event.xbutton.x, &event.xbutton.y, &event.xbutton.state);
   
    event.xbutton.subwindow = event.xbutton.window;
   
    while(event.xbutton.subwindow)
    {
        event.xbutton.window = event.xbutton.subwindow;
       
        XQueryPointer(display, event.xbutton.window, &event.xbutton.root, &event.xbutton.subwindow, &event.xbutton.x_root, &event.xbutton.y_root, &event.xbutton.x, &event.xbutton.y, &event.xbutton.state);
    }
   
    if(XSendEvent(display, PointerWindow, True, 0xfff, &event) == 0) fprintf(stderr, "Errore nell'invio dell'evento !!!\n");
   
    XFlush(display);
   
    usleep(100000);
   
    event.type = ButtonRelease;
    event.xbutton.state = 0x100;
   
    if(XSendEvent(display, PointerWindow, True, 0xfff, &event) == 0) fprintf(stderr, "Errore nell'invio dell'evento !!!\n");
   
    XFlush(display);
   
    XCloseDisplay(display);
}

void Mouse_push(int button)
{
    Display *display = XOpenDisplay(NULL);

    XEvent event;
   
    if(display == NULL)
    {
        fprintf(stderr, "Errore nell'apertura del Display !!!\n");
    }
   
    memset(&event, 0x00, sizeof(event));
   
    event.type = ButtonPress;
    event.xbutton.button = button;
    event.xbutton.same_screen = True;
          
    if(XSendEvent(display, PointerWindow, True, 0xfff, &event) == 0) fprintf(stderr, "Errore nell'invio dell'evento !!!\n");
   
    XFlush(display);
   
    XCloseDisplay(display);
}

void Mouse_release(int button)
{
    Display *display = XOpenDisplay(NULL);

    XEvent event;
   
    if(display == NULL)
    {
        fprintf(stderr, "Errore nell'apertura del Display !!!\n");
    }
   
    memset(&event, 0x00, sizeof(event));
   
    event.type = ButtonRelease;
    event.xbutton.button = button;
    event.xbutton.same_screen = True;
   
    XQueryPointer(display, RootWindow(display, DefaultScreen(display)), &event.xbutton.root, &event.xbutton.window, &event.xbutton.x_root, &event.xbutton.y_root, &event.xbutton.x, &event.xbutton.y, &event.xbutton.state);
   
    event.xbutton.subwindow = event.xbutton.window;
   
    if(XSendEvent(display, PointerWindow, True, 0xfff, &event) == 0) fprintf(stderr, "Errore nell'invio dell'evento !!!\n");
   
    XFlush(display);
 

    //event.xbutton.state = 0x100;

   
    XCloseDisplay(display);
}

void error_handling(char *message)
{
 printf("%s",message);

}