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  1. 2009.08.06 -- Windows socket source

Windows socket source

2009. 8. 6. 18:23
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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <winsock2.h>
 
#define BUFSIZE 1024
#define PORT      80
 
void ErrorHandling(char *message);
 
 
int main(int argc, char *argv[])
{
 
    WSADATA wsaData;
    SOCKET hSocket;
    char message[BUFSIZE];
    int len, i, option, result = 0;
    SOCKADDR_IN servAddr;
    struct hostent *host;
        char *lists[] = {0,}; 
     
 
#if 0
    if(argc!=2) {
        Usuage(argv[0]);   
    }
#endif
 
#if 1
    if(WSAStartup(MAKEWORD(2, 2), &wsaData) !=0)
        ErrorHandling("WSAStartup() error!");
#endif
     
    for(i=0; i<4; i++) {
 
        host = gethostbyname(lists[i]);
 
        printf("trying to connect %s...\n", lists[i]);
#if 1
     hSocket=socket(PF_INET, SOCK_STREAM, 0);
     if(hSocket == INVALID_SOCKET)
        ErrorHandling("socket() error");
#endif
 
     option = TRUE;
 
     setsockopt(hSocket, SOL_SOCKET, SO_REUSEADDR, (char *)&option, sizeof(option));
     
     memset(&servAddr, 0, sizeof(servAddr));
     servAddr.sin_family = AF_INET;
     servAddr.sin_addr.s_addr = inet_addr(inet_ntoa( *(struct in_addr*)host->h_addr_list[0]));
     servAddr.sin_port = htons(PORT);
 
    if(connect(hSocket, (SOCKADDR*)&servAddr, sizeof(servAddr)) == SOCKET_ERROR)
        ErrorHandling("connect() error!");
 
    //sprintf(message, "GET /index.html HTTP/1.1");
    sprintf(message, "hello");
 
    send(hSocket, message, strlen(message), 0);
     
#if 1
    len=recv(hSocket, message, BUFSIZE-1, 0);
    message[len] = 0;
    if(len == -1) {
        printf("Can`t connect %s.\n", lists[i]);
        result--;
    }
    if(len > 0) {
        printf("Success.connected to %s.\n", lists[i]);
        result++;
    }
    closesocket(hSocket);
#endif
    }
 
    if(result > 2) {
        printf("This machine seems to be clean\n");
    }
    else if (result <2 && result >0)
        printf("Warning. This machine needs to be other inspection.\n");
    else {
        printf("Infected!. Need some help.\n");
    }
 
    WSACleanup();
    return 0;
}
 
 
void ErrorHandling(char *message)
{
    fputs(message, stderr);
    fputc( '\n', stderr);
    exit(1);
}
</winsock2.h></string.h></stdlib.h></stdio.h>

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