php - ssh2_exec环境试图ssh到vyos路由器并获取配置

我正在编写一个PHP脚本以通过ssh连接到vyos路由器并使用以下命令备份配置
show configuration commands。

当我从命令提示符连接时，按预期工作

ssh [email protected]
Password: ****
$ show configuration

interfaces {
...

但是这是我的脚本，我试图使用php来做同样的事情。

<?php
//Connect to VyOS virtual router and backup config

$host = '192.168.171.50';
$user = 'vyos';
$pass = 'vyos';

$connection = ssh2_connect($host, 22 );
if (!$connection) die('Connection failed');

if (ssh2_auth_password($connection, $user, $pass)) {
  echo "Authentication Successful!\n";
} else {
  die('Authentication Failed...');
}

$stream = ssh2_exec($connection, 'show configuration' );
$errorStream = ssh2_fetch_stream($stream, SSH2_STREAM_STDERR);

// Enable blocking for both streams
stream_set_blocking($errorStream, true);
stream_set_blocking($stream, true);

echo "Output: " . stream_get_contents($stream);
echo "Error: " . stream_get_contents($errorStream);

// Close the streams
fclose($errorStream);
fclose($stream);

exit;

代码返回错误

Invalid command: [show]

我最好的猜测是，这与PATH或其他环境变量有关。有任何想法吗？我正在使用vyatta / vyos vm镜像进行测试。

最佳答案

我认为phpseclib可能会更好。例如:

$ssh = new Net_SSH2('192.168.171.50');
$ssh->login('vyos', 'vyos');

$ssh->read('$');
$ssh->write("show configuration running\n");
echo $ssh->read('$');

这也可能起作用:

$ssh = new Net_SSH2('192.168.171.50');
$ssh->login('vyos', 'vyos');

echo $ssh->exec('show configuration running');

如果这不起作用，则可能:

$ssh = new Net_SSH2('192.168.171.50');
$ssh->login('vyos', 'vyos');

$ssh->enablePTY();
echo $ssh->exec('show configuration running');

JC的“编辑如下:最终工作代码”-必须将终端长度设置为0或代码在寻呼机上挂起。

  include('Net/SSH2.php');
  $ssh = new \Net_SSH2('192.168.171.50');
  $ssh->login('vyos', 'vyos');

  $ssh->read('$');
  $ssh->write("set terminal length 0\n");
  $ssh->read('$');
  $ssh->write("show configuration\n");
  echo $ssh->read('$');