<?
include('config.inc.php');
include('ppping.inc.php');

function sshdo($cmd, $ip, $user="root")
{
	global $privkey_file;
	global $pubkey_file;

	if (!function_exists("ssh2_connect")) die("sshdo(): function ssh2_connect doesn't exist. You must install the ssh2 module from pecl library!");

	if(!($con = ssh2_connect($ip, "22")))
	{
		echo "sshdo(): failure, could not connect\n";
	}
	else
	{
		if(!ssh2_auth_pubkey_file($con, $user, $pubkey_file, $privkey_file))
		{
			echo "sshdo(): failure, could not login\n";
		}
		else
		{
			//echo "logged in\n";

			if(!($stream = ssh2_exec($con, "source /etc/profile; ".$cmd."; echo '__RETVAL__:'$?")))
			{
				echo "sshdo(): failure, could not execute command '".$cmd."'\n";
			}
			else
			{
				// collect stream data
				stream_set_blocking($stream, true);
				$data = "";
				while ($buf =  fread($stream,4096))
				{
					$data .= $buf;
					//echo "buf=" .$buf."\n";
				}
				fclose($stream);
				# get the last element of data as retval
				$retval = explode('__RETVAL__:', trim($data));
			}
		}
	}

	// return an array -> 0=retval, 1=data
	return array($retval[1], $retval[0]);
}

function ssh_editvar($var, $value, $file)
{
	global $ip;

	// sed cmd: ssh -l root 10.11.12.13 'sed -i -e "s|^\(VAR=\).*|\1\"VALUE\"| FILE'
	sshdo('if [[ ! -z $(grep "^'.$var.'=" '.file.') ]]; then sed -i -e "s|^\('.$var.'=\).*|\1\"'.$value.'\"|" '.$file. 'else echo "'.$var.'=\"'.$value.'\"" >> '.file, $ip);
}

function online($ip)
{
	$ping = new PPPing();
	$ping->hostname = $ip;
	$ping->timeout = "0.3";
	$result = $ping->Ping();

	if($result<0)
	{
		echo "error: ".$ping->strError($result);
		$retval=1;
	}
	else
	{
		echo $result." ms";
		$retval=0;
	}
	return $retval;
}
?>