<?php
use phpseclib3\Net\SSH2;
use phpseclib3\Net\SFTP;
  
require 'vendor/autoload.php';
  
class ogcp_ssh2 {
    private $ssh;
    private $sftp;
    private $error;
    private $host;
    private $port;
    private $username;
    private $password;
  
    public function __construct() {
        $this->ssh = null;
        $this->sftp = null;
        $this->error = "";
    }
  
    public function Connect($host, $port = 22) {
        if ($host == "") return false;
        $this->host = gethostbyname($host);
        $this->port = $port;
          
        $this->ssh = new SSH2($this->host, $this->port);
        if ($this->ssh) {
            return true;
        } else {
            $this->error = 'Error #01: Server not found!';
            return false;
        }
    }
  
    public function ConnectwAuth($host, $port = 22, $user, $pass) {
        if ($host == "" || $user == "" || $pass == "") return false;
  
        $this->username = $user;
        $this->password = $pass;
  
        if ($this->Connect($host, $port)) {
            if ($this->ssh->login($user, $pass)) {
                return true;
            } else {
                $this->error = 'Error #02: Authentication rejected by server!';
                return false;
            }
        }
        $this->error = 'Error #01: Server not found!';
        return false;
    }
  
    public function SFTP_DownloadFile($remote, $local) {
        if (!$this->sftp) {
            $this->sftp = new SFTP($this->host, $this->port);
            $this->sftp->login($this->username, $this->password);
        }
        return $this->sftp->get($remote, $local);
    }
  
    public function SFTP_UploadFile($local, $remote) {
        if (!$this->sftp) {
            $this->sftp = new SFTP($this->host, $this->port);
            $this->sftp->login($this->username, $this->password);
        }
        return $this->sftp->put($remote, $local, SFTP::SOURCE_LOCAL_FILE);
    }
  
    public function OpenSFTP() {
        $this->sftp = new SFTP($this->host, $this->port);
        if ($this->sftp->login($this->username, $this->password)) {
            return true;
        } else {
            $this->error = 'Error #03: SFTP Connection rejected!';
            return false;
        }
    }
  
    public function SFTP_ReadFile($filepath) {
        if ($filepath == "") return false;
        if (!$this->sftp) {
            $this->OpenSFTP();
        }
        return $this->sftp->get($filepath);
    }
  
    public function SFTP_FileLink($filepath) {
        return $filepath;
    }
  
    public function Disconnect() {
        $this->ssh->disconnect();
        $this->sftp = null;
        $this->ssh = null;
        return null;
    }
  
    public function Exec($cmd) {
        return $this->ssh->exec($cmd);
    }
}
?>

<?php
    class ogcp_ssh2 {
        private $socket;
        private $sftp;
        private $error;
        
        ##### Constructor #####
        public function __construct() {
            $this->socket = null;
            $this->sftp = null;
            $this->error = "";
        }
        
        public function Connect($host,$port = 22) {
            if($host == "") return false;
            $host = gethostbyname($host);
            if( $this->socket = @ssh2_connect($host,$port) ) {
                return true;
            } else {
                $this->error = 'Error #01: Server not found!';
                return false;
            }
        }
        
        public function ConnectwAuth($host,$port = 22,$user,$pass) {
            if($host == "" || $user == "" || $pass == "") return false;
            
            if( $this->Connect($host,$port) ) {
                if(@ssh2_auth_password($this->socket,$user,$pass)) {
                    return true;
                } else {
                    $this->error = 'Error #02: Autentication rejected by server!';
                    return false;
                }
            }
            $this->error = 'Error #01: Server not found!';
            return false;
        }

        public function SFTP_DownloadFile($uzak,$yerel) {
            return ssh2_scp_recv($this->socket, $uzak, $yerel);
            }

        public function SFTP_UploadFile($dosya,$dosya2) {
                return ssh2_scp_send($this->socket, $dosya, $dosya2, 0777);
            }
        
        public function OpenSFTP() {
            if($this->sftp = ssh2_sftp($this->socket)) {
                return true;
            } else {
                $this->error = 'Error #03: SFTP Connection rejected!';
                return false;
            }
        }
        
        public function SFTP_ReadFile($filepath) {
            if($filepath == "") return false;
            if(!$this->sftp) {
                $this->sftp = @ssh2_sftp($this->socket);
            }
            $filepath = 'ssh2.sftp://'.$this->sftp.'/'.$filepath;
            if( !file_exists($filepath) ) { return false; } else {
                $dosya = @fopen($filepath,'r');
                $buffer = "";
                while(!feof($dosya)) {
                    $buffer .= fread($dosya,filesize($filepath));
                }
                return $buffer;
            }
        }

        public function SFTP_FileLink($filepath) {
            if($filepath == "") return false;
            if(!$this->sftp) {
                $this->sftp = @ssh2_sftp($this->socket);
            }

            $filepath = 'ssh2.sftp://'.$this->sftp.'/'.$filepath;
            return $filepath;
        }

        public function Disconnect() {
            if(function_exists('ssh2_disconnect')) {
                @ssh2_disconnect($this->socket);
            } else {
                @fclose($this->socket);
                unset($this->socket);
            }
            
            return NULL;
        }

        public function Exec($cmd) {
            $durum = @ssh2_exec($this->socket, $cmd);
            @stream_set_blocking( $durum, true );
            return $durum;
        }
    }
?>