#!/usr/bin/php
<?php

$host = "192.168.1.100";
$port = 80;

set_time_limit(0);

$socket = socket_create(AF_INET, SOCK_STREAM, 0) or die("Could not create socket\n");
$result = socket_bind($socket, $host, $port) or die("Could not bind to socket\n");
$result = socket_listen($socket, 3) or die("Could not set up socket listener\n");
$spawn = socket_accept($socket) or die("Could not accept incoming connection\n");

$remote_host;
$remote_port;

$local_host;
$local_port;

socket_getpeername($spawn, $remote_host, $remote_port);
socket_getsockname($spawn, $local_host, $local_port);
echo("Got connection from: $remote_host on port $remote_port | Attached to $local_host on port $local_port \n");
auth();

socket_close($socket);

function auth()
{
    global $spawn;

    socket_write($spawn, "Please enter your username: ");
    $username = rtrim(socket_read($spawn, 1024));
    if($username == "Lain")
    {
        echo("User $username logged in.\n");
        motd();
        prompt();
    }
    else
    {
        socket_write($spawn, "Invalid username. Closing connection.\nBye.");
        socket_close($spawn);
    }
}

function motd()
{
    global $spawn;

    $motd = "
    _    _      _ _         _           _
       | |  | |    | | |       | |         (_)
       | |__| | ___| | | ___   | |     __ _ _ _ __
       |  __  |/ _ \ | |/ _ \  | |    / _` | | '_ \
       | |  | |  __/ | | (_) | | |___| (_| | | | | |
       |_|  |_|\___|_|_|\___/  |______\__,_|_|_| |_|\n\n";

    socket_write($spawn, $motd);
}

function prompt()
{
    global $spawn;
    socket_write($spawn, "Welcome to the wired...enter your command.\n");
    do
    {
        socket_write($spawn, "> ");
        $input = socket_read($spawn, 1024) or die("Could not read input\n");

        if(rtrim($input != ''))
        {
            if(rtrim($input) == "END")
            {
                socket_write($spawn, "bye\n");
                socket_close($spawn);
                break;
            }
            else
            {
                echo("Got $input");
                socket_write($spawn, "You said $input");
            }
        }
    }
    while(true);
}


?>