I am writing a php script to connect to a vyos router via ssh and backup the configuration using the command
show configuration commands
.
When I connect from the command prompt this works as expected
ssh vyos@1.1.1.99
Password: ****
$ show configuration
interfaces {
...
But here is a my script where I'm trying to do the same thing using php.
<?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;
The code returns the error
Invalid command: [show]
My best guess is this has something to do with the PATH or other environment variable. Any ideas? I'm using vyatta/vyos vm image to test this.
I think you might have better luck with phpseclib . For example:
$ssh = new Net_SSH2('192.168.171.50');
$ssh->login('vyos', 'vyos');
$ssh->read('$');
$ssh->write("show configuration running\n");
echo $ssh->read('$');
this might work too:
$ssh = new Net_SSH2('192.168.171.50');
$ssh->login('vyos', 'vyos');
echo $ssh->exec('show configuration running');
and if that does not work this might:
$ssh = new Net_SSH2('192.168.171.50');
$ssh->login('vyos', 'vyos');
$ssh->enablePTY();
echo $ssh->exec('show configuration running');
JC's Edit Below: Final Working Code - must set terminal length to 0 or code hangs on pager.
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 $ssh->read('$');
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