在CodeIgniter控制器中建立SSH连接

Question

Recently I came across this library, which allows me to connect via ssh to a remote machine. ( this case, a fake 123.45.67.890 . The library is shukydvir .

I followed the instructions given in the overview tab, however, as shown below:

public function deploy_test()
{
    $params = array( 
                'hostname' => "123.45.67.890",
                'port' => 23,
                'username' => "username",
                'password' => "password"
                );

    if(!($con = $this->ssh->connect($params))) {
        echo json_encode("fail: unable to establish connection\n");
    }
    else {
        echo json_encode("helloworld");
    }
}

when what I got back in the webpage is:

fail: unable to establish connection

Thus, tired of that, I installed ssh2 library, and I restated my server:

public function deploy_test() {
    $connection = ssh2_connect("123.45.67.890", 23);

    if(!$connection) {
       echo json_encode('Connection failed');
    }

    ssh2_auth_password($connection, "username", "password");
    $stream = ssh2_exec($connection, "ls -l");
    stream_get_blocking($stream, true);
    $output = "";
    while($line = fgets($stream)) {
        $output .= $line;
    }
    echo json_encode($line);
}

The results are not encouraging:

<p>Severity: Warning</p>
<p>Message:  ssh2_connect(): Unable to connect to 123.45.67.890 on port 23</p>
<p>Filename: controllers/automation.php</p>
<p>Line Number: 70</p>

However, when I execute the same script from my test.php file, I get:

02/13/2013  10:41 PM              .
02/13/2013  10:41 PM              ..
02/13/2013  10:41 PM               952 FreeSSHd.lnk
               1 File(s)            952 bytes
               2 Dir(s)  55,343,263,744 bytes free

The other server has freSSHD installed, and it's ready to do connections. I have tried everything I can. could someone please help me?

Answer 1

CodeIgniter-SSH2库正在使用php的本机函数ssh2_connect（），该函数是基于sftp的安全Shell登录，并且基本上连接到端口22。尝试更改端口：

$connection = ssh2_connect("123.45.67.890", 22);