<?php
if (! defined('IS_INITPHP'))
    exit('Access Denied!');
include 'ssh/Net/SSH2.php';

/**
 * SSH登陆服务器操作
 *
 * @author Chen Deben
 * @copyright Meitu
 */
class sshInit {

    public $ssh;

    /**
     * 登陆
     * 
     * @param string $server
     *            服务器地址
     * @param string $username
     *            用户名
     * @param string $password
     *            密码，如果$cer=true,则此处为证书的地址
     * @param string $cer            
     */
    public function login($server,$port=22, $username = "root", $password="", $cer = FALSE) {
        $this->ssh = new Net_SSH2($server,$port);
        if ($cer) {
            include ('Crypt/RSA.php');
            $key = new Crypt_RSA();
            $key->loadKey(file_get_contents($password));
        } else {
            $key = $password;
        }
        if (!$this->ssh->login($username, $key)) {
            return false; // Login Failed
        }else {
            return true;
        }
    }
    /**
     * 执行SSH命令
     */
    public function exec($com){
        return $this->ssh->exec($com);
    }
    /**
     * 关闭SSH连接
     */
    public function close(){
        return $this->ssh->disconnect();
    }
}