pgpshare.class.php

<?php

class PGPShare
{
    public $mysqli;
    public $errormsg;

    function __construct()
    {
        include("config.php");

        $this->mysqli = new mysqli($db['host'], $db['user'], $db['pass'], $db['name']);
    }

    function AddUser1Key($key)
    {
        $id = substr(hash("SHA512", microtime()), 10, 10);
        $ip = $_SERVER['REMOTE_ADDR'];

        if(strlen($key) == 0) { $this->errormsg = 1; return false; }
        elseif(strlen($key) < 10) { $this->errormsg = 2; return false; }
        elseif(strlen($key) > 4294967295) { $this->errormsg = 3; return false; }
        else
        {
            $user2key = "None";

            $query = $this->mysqli->prepare("INSERT INTO `keys` (`id`, `user1key`, `user2key`, `user1ip`) VALUES (?, ?, ?, ?)");
            $query->bind_param("ssss", $id, $key, $user2key, $ip);
            $query->execute();
            $query->close();

            return $id;
        }
    }

    function AddUser2Key($key, $id)
    {
        if(strlen($id) == 0) { $this->errormsg = 1; return false; }
        elseif(strlen($id) > 10) { $this->errormsg = 2; return false; }
        elseif(strlen($id) < 10) { $this->errormsg = 3; return false; }
        elseif(strlen($key) == 0) { $this->errormsg = 4; return false; }
        elseif(strlen($key) < 10) { $this->errormsg = 5; return false; }
        elseif(strlen($key) > 4294967295) { $this->errormsg = 6; return false; }
        else
        {
            $query = $this->mysqli->prepare("SELECT `user2key` FROM `keys` WHERE `id`=?");
            $query->bind_param("s", $id);
            $query->bind_result($user2key);
            $query->execute();
            $query->store_result();
            $count = $query->num_rows;
            $query->fetch();
            $query->close();

            if($count == 0)
            {
                $this->errormsg = 7;
                return false;
            }
            else
            {
                if($user2key !== "None")
                {
                    $this->errormsg = 8;
                    return false;
                }
                else
                {
                    $query = $this->mysqli->prepare("UPDATE `keys` SET `user2key`=? WHERE `id`=?");
                    $query->bind_param("ss", $key, $id);
                    $query->execute();
                    $query->close();

                    return true;
                }
            }
        }
    }

    function VerifyId($id)
    {
        if(strlen($id) == 0) { $this->errormsg = 1; return false; }
        elseif(strlen($id) > 10)  { $this->errormsg = 2; return false; }
        elseif(strlen($id) < 10) { $this->errormsg = 3; return false; }
        else
        {
            if(!$query = $this->mysqli->prepare("SELECT `user2ip` FROM `keys` WHERE `id`=?"))
            {
                $this->errormsg = $query->mysqli->error;
            }
            $query->bind_param("s", $id);
            $query->bind_result($user2ip);
            $query->execute();
            $query->store_result();
            $count = $query->num_rows;
            $query->fetch();

            if($count == 0)
            {
                $this->errormsg = 4;
                return false;
            }
            else
            {
                if($user2ip !== "0.0.0.0")
                {
                    $this->errormsg = 5;
                    return false;
                }
                else
                {
                    return true;
                }
            }
        }
    }

    function VerifyIp($id)
    {
        if(strlen($id) == 0) { $this->errormsg = 1; return false; }
        elseif(strlen($id) > 10)  { $this->errormsg = 2; return false; }
        elseif(strlen($id) < 10) { $this->errormsg = 3; return false; }
        else
        {
            $ip = $_SERVER['REMOTE_ADDR'];

            $query = $this->mysqli->prepare("SELECT * FROM `keys` WHERE `id`=? AND `user1ip`=?");
            $query->bind_param("ss", $id, $ip);
            $query->execute();
            $query->store_result();
            $count = $query->num_rows;
            $query->close();

            if($count == 0)
            {
                $query = $this->mysqli->prepare("UPDATE `keys` SET `user2ip`=? WHERE `id`=?");
                $query->bind_param("ss", $ip, $id);
                $query->execute();
                $query->close();

                return true;
            }
            else
            {
                $this->errormsg = 4;
                return false;
            }
        }
    }

    function GetUser1Key($id)
    {
        if(strlen($id) == 0) { $this->errormsg = 1; return false; }
        elseif(strlen($id) > 10)  { $this->errormsg = 2; return false; }
        elseif(strlen($id) < 10) { $this->errormsg = 3; return false; }
        else
        {
            $query = $this->mysqli->prepare("SELECT `user1key` FROM `keys` WHERE `id`=?");
            $query->bind_param("s", $id);
            $query->bind_result($user1key);
            $query->execute();
            $query->store_result();
            $count = $query->num_rows;
            $query->fetch();
            $query->close();

            if($count == 0)
            {
                $this->errormsg = 4;
                return false;
            }
            else
            {
                return $user1key;
            }
        }
    }

    function GetUser2Key($id)
    {
        if(strlen($id) == 0) { $this->errormsg = 1; return false; }
        elseif(strlen($id) > 10)  { $this->errormsg = 2; return false; }
        elseif(strlen($id) < 10) { $this->errormsg = 3; return false; }
        else
        {
            $ip = $_SERVER['REMOTE_ADDR'];

            $query = $this->mysqli->prepare("SELECT `user1ip`,`user2key` FROM `keys` WHERE `id`=?");
            $query->bind_param("s", $id);
            $query->bind_result($user1ip, $user2key);
            $query->execute();
            $query->store_result();
            $count = $query->num_rows;
            $query->fetch();
            $query->close();

            if($count == 0)
            {
                $this->errormsg = 4;
                return false;
            }
            else
            {
                if($ip == $user1ip)
                {
                    return $user2key;
                }
                else
                {
                    $this->errormsg = 5;
                    return false;
                }
            }
        }
    }
}


?>