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<?php
/**
* Copyright (c) 2014 Robin Appelman <icewind@owncloud.com>
* This file is licensed under the Licensed under the MIT license:
* http://opensource.org/licenses/MIT
*/
namespace Icewind\SMB;
use Icewind\SMB\Exception\AuthenticationException;
use Icewind\SMB\Exception\ConnectException;
use Icewind\SMB\Exception\ConnectionException;
use Icewind\SMB\Exception\InvalidHostException;
use Icewind\SMB\Exception\NoLoginServerException;
class Connection extends RawConnection {
const DELIMITER = 'smb:';
const DELIMITER_LENGTH = 4;
/**
* send input to smbclient
*
* @param string $input
*/
public function write($input) {
parent::write($input . PHP_EOL);
}
/**
* get all unprocessed output from smbclient until the next prompt
*
* @param callable $callback (optional) callback to call for every line read
* @return string
* @throws AuthenticationException
* @throws ConnectException
* @throws ConnectionException
* @throws InvalidHostException
* @throws NoLoginServerException
*/
public function read(callable $callback = null) {
if (!$this->isValid()) {
throw new ConnectionException('Connection not valid');
}
$promptLine = $this->readLine(); //first line is prompt
$this->checkConnectionError($promptLine);
$output = array();
$line = $this->readLine();
if ($line === false) {
$this->unknownError($promptLine);
}
while (!$this->isPrompt($line)) { //next prompt functions as delimiter
if (is_callable($callback)) {
$result = $callback($line);
if ($result === false) { // allow the callback to close the connection for infinite running commands
$this->close(true);
}
} else {
$output[] .= $line;
}
$line = $this->readLine();
}
return $output;
}
/**
* Check
*
* @param $line
* @return bool
*/
private function isPrompt($line) {
return mb_substr($line, 0, self::DELIMITER_LENGTH) === self::DELIMITER || $line === false;
}
/**
* @param string $promptLine (optional) prompt line that might contain some info about the error
* @throws ConnectException
*/
private function unknownError($promptLine = '') {
if ($promptLine) { //maybe we have some error we missed on the previous line
throw new ConnectException('Unknown error (' . $promptLine . ')');
} else {
$error = $this->readError(); // maybe something on stderr
if ($error) {
throw new ConnectException('Unknown error (' . $error . ')');
} else {
throw new ConnectException('Unknown error');
}
}
}
/**
* check if the first line holds a connection failure
*
* @param $line
* @throws AuthenticationException
* @throws InvalidHostException
* @throws NoLoginServerException
*/
private function checkConnectionError($line) {
$line = rtrim($line, ')');
if (substr($line, -23) === ErrorCodes::LogonFailure) {
throw new AuthenticationException('Invalid login');
}
if (substr($line, -26) === ErrorCodes::BadHostName) {
throw new InvalidHostException('Invalid hostname');
}
if (substr($line, -22) === ErrorCodes::Unsuccessful) {
throw new InvalidHostException('Connection unsuccessful');
}
if (substr($line, -28) === ErrorCodes::ConnectionRefused) {
throw new InvalidHostException('Connection refused');
}
if (substr($line, -26) === ErrorCodes::NoLogonServers) {
throw new NoLoginServerException('No login server');
}
}
public function close($terminate = true) {
if (is_resource($this->getInputStream())) {
$this->write('close' . PHP_EOL);
}
parent::close($terminate);
}
}
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