mirror of
https://github.com/danog/tgseclib.git
synced 2024-11-27 12:44:38 +01:00
363 lines
9.8 KiB
PHP
363 lines
9.8 KiB
PHP
<?php
|
|
|
|
/**
|
|
* Pure-PHP implementation of SCP.
|
|
*
|
|
* PHP versions 4 and 5
|
|
*
|
|
* The API for this library is modeled after the API from PHP's {@link http://php.net/book.ftp FTP extension}.
|
|
*
|
|
* Here's a short example of how to use this library:
|
|
* <code>
|
|
* <?php
|
|
* include('Net/SCP.php');
|
|
* include('Net/SSH2.php');
|
|
*
|
|
* $ssh = new Net_SSH2('www.domain.tld');
|
|
* if (!$ssh->login('username', 'password')) {
|
|
* exit('bad login');
|
|
* }
|
|
|
|
* $scp = new Net_SCP($ssh);
|
|
* $scp->put('abcd', str_repeat('x', 1024*1024));
|
|
* ?>
|
|
* </code>
|
|
*
|
|
* LICENSE: Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
* in the Software without restriction, including without limitation the rights
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
* THE SOFTWARE.
|
|
*
|
|
* @category Net
|
|
* @package Net_SCP
|
|
* @author Jim Wigginton <terrafrost@php.net>
|
|
* @copyright MMX Jim Wigginton
|
|
* @license http://www.opensource.org/licenses/mit-license.html MIT License
|
|
* @link http://phpseclib.sourceforge.net
|
|
*/
|
|
|
|
/**#@+
|
|
* @access public
|
|
* @see Net_SCP::put()
|
|
*/
|
|
/**
|
|
* Reads data from a local file.
|
|
*/
|
|
define('NET_SCP_LOCAL_FILE', 1);
|
|
/**
|
|
* Reads data from a string.
|
|
*/
|
|
define('NET_SCP_STRING', 2);
|
|
/**#@-*/
|
|
|
|
/**#@+
|
|
* @access private
|
|
* @see Net_SCP::_send()
|
|
* @see Net_SCP::_receive()
|
|
*/
|
|
/**
|
|
* SSH1 is being used.
|
|
*/
|
|
define('NET_SCP_SSH1', 1);
|
|
/**
|
|
* SSH2 is being used.
|
|
*/
|
|
define('NET_SCP_SSH2', 2);
|
|
/**#@-*/
|
|
|
|
/**
|
|
* Pure-PHP implementations of SCP.
|
|
*
|
|
* @package Net_SCP
|
|
* @author Jim Wigginton <terrafrost@php.net>
|
|
* @version 0.1.0
|
|
* @access public
|
|
*/
|
|
class Net_SCP
|
|
{
|
|
/**
|
|
* SSH Object
|
|
*
|
|
* @var Object
|
|
* @access private
|
|
*/
|
|
var $ssh;
|
|
|
|
/**
|
|
* Packet Size
|
|
*
|
|
* @var Integer
|
|
* @access private
|
|
*/
|
|
var $packet_size;
|
|
|
|
/**
|
|
* Mode
|
|
*
|
|
* @var Integer
|
|
* @access private
|
|
*/
|
|
var $mode;
|
|
|
|
/**
|
|
* Default Constructor.
|
|
*
|
|
* Connects to an SSH server
|
|
*
|
|
* @param String $host
|
|
* @param optional Integer $port
|
|
* @param optional Integer $timeout
|
|
* @return Net_SCP
|
|
* @access public
|
|
*/
|
|
function Net_SCP($ssh)
|
|
{
|
|
if (!is_object($ssh)) {
|
|
return;
|
|
}
|
|
|
|
switch (strtolower(get_class($ssh))) {
|
|
case'net_ssh2':
|
|
$this->mode = NET_SCP_SSH2;
|
|
break;
|
|
case 'net_ssh1':
|
|
$this->packet_size = 50000;
|
|
$this->mode = NET_SCP_SSH1;
|
|
break;
|
|
default:
|
|
return;
|
|
}
|
|
|
|
$this->ssh = $ssh;
|
|
}
|
|
|
|
/**
|
|
* Uploads a file to the SCP server.
|
|
*
|
|
* By default, Net_SCP::put() does not read from the local filesystem. $data is dumped directly into $remote_file.
|
|
* So, for example, if you set $data to 'filename.ext' and then do Net_SCP::get(), you will get a file, twelve bytes
|
|
* long, containing 'filename.ext' as its contents.
|
|
*
|
|
* Setting $mode to NET_SCP_LOCAL_FILE will change the above behavior. With NET_SCP_LOCAL_FILE, $remote_file will
|
|
* contain as many bytes as filename.ext does on your local filesystem. If your filename.ext is 1MB then that is how
|
|
* large $remote_file will be, as well.
|
|
*
|
|
* Currently, only binary mode is supported. As such, if the line endings need to be adjusted, you will need to take
|
|
* care of that, yourself.
|
|
*
|
|
* @param String $remote_file
|
|
* @param String $data
|
|
* @param optional Integer $mode
|
|
* @param optional Callable $callback
|
|
* @return Boolean
|
|
* @access public
|
|
*/
|
|
function put($remote_file, $data, $mode = NET_SCP_STRING, $callback = null)
|
|
{
|
|
if (!isset($this->ssh)) {
|
|
return false;
|
|
}
|
|
|
|
if (!$this->ssh->exec('scp -t ' . $remote_file, false)) { // -t = to
|
|
return false;
|
|
}
|
|
|
|
$temp = $this->_receive();
|
|
if ($temp !== chr(0)) {
|
|
return false;
|
|
}
|
|
|
|
if ($this->mode == NET_SCP_SSH2) {
|
|
$this->packet_size = $this->ssh->packet_size_client_to_server[NET_SSH2_CHANNEL_EXEC] - 4;
|
|
}
|
|
|
|
$remote_file = basename($remote_file);
|
|
|
|
if ($mode == NET_SCP_STRING) {
|
|
$size = strlen($data);
|
|
} else {
|
|
if (!is_file($data)) {
|
|
user_error("$data is not a valid file", E_USER_NOTICE);
|
|
return false;
|
|
}
|
|
|
|
$fp = @fopen($data, 'rb');
|
|
if (!$fp) {
|
|
fclose($fp);
|
|
return false;
|
|
}
|
|
$size = filesize($data);
|
|
}
|
|
|
|
$this->_send('C0644 ' . $size . ' ' . $remote_file . "\n");
|
|
|
|
$temp = $this->_receive();
|
|
if ($temp !== chr(0)) {
|
|
return false;
|
|
}
|
|
|
|
$sent = 0;
|
|
while ($sent < $size) {
|
|
$temp = $mode & NET_SCP_STRING ? substr($data, $sent, $this->packet_size) : fread($fp, $this->packet_size);
|
|
$this->_send($temp);
|
|
$sent+= strlen($temp);
|
|
|
|
if (is_callable($callback)) {
|
|
$callback($sent);
|
|
}
|
|
}
|
|
$this->_close();
|
|
|
|
if ($mode != NET_SCP_STRING) {
|
|
fclose($fp);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Downloads a file from the SCP server.
|
|
*
|
|
* Returns a string containing the contents of $remote_file if $local_file is left undefined or a boolean false if
|
|
* the operation was unsuccessful. If $local_file is defined, returns true or false depending on the success of the
|
|
* operation
|
|
*
|
|
* @param String $remote_file
|
|
* @param optional String $local_file
|
|
* @return Mixed
|
|
* @access public
|
|
*/
|
|
function get($remote_file, $local_file = false)
|
|
{
|
|
if (!isset($this->ssh)) {
|
|
return false;
|
|
}
|
|
|
|
if (!$this->ssh->exec('scp -f ' . $remote_file, false)) { // -f = from
|
|
return false;
|
|
}
|
|
|
|
$this->_send("\0");
|
|
|
|
if (!preg_match('#(?<perms>[^ ]+) (?<size>\d+) (?<name>.+)#', rtrim($this->_receive()), $info)) {
|
|
return false;
|
|
}
|
|
|
|
$this->_send("\0");
|
|
|
|
$size = 0;
|
|
|
|
if ($local_file !== false) {
|
|
$fp = @fopen($local_file, 'wb');
|
|
if (!$fp) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
$content = '';
|
|
while ($size < $info['size']) {
|
|
$data = $this->_receive();
|
|
// SCP usually seems to split stuff out into 16k chunks
|
|
$size+= strlen($data);
|
|
|
|
if ($local_file === false) {
|
|
$content.= $data;
|
|
} else {
|
|
fputs($fp, $data);
|
|
}
|
|
}
|
|
|
|
$this->_close();
|
|
|
|
if ($local_file !== false) {
|
|
fclose($fp);
|
|
return true;
|
|
}
|
|
|
|
return $content;
|
|
}
|
|
|
|
/**
|
|
* Sends a packet to an SSH server
|
|
*
|
|
* @param String $data
|
|
* @access private
|
|
*/
|
|
function _send($data)
|
|
{
|
|
switch ($this->mode) {
|
|
case NET_SCP_SSH2:
|
|
$this->ssh->_send_channel_packet(NET_SSH2_CHANNEL_EXEC, $data);
|
|
break;
|
|
case NET_SCP_SSH1:
|
|
$data = pack('CNa*', NET_SSH1_CMSG_STDIN_DATA, strlen($data), $data);
|
|
$this->ssh->_send_binary_packet($data);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Receives a packet from an SSH server
|
|
*
|
|
* @return String
|
|
* @access private
|
|
*/
|
|
function _receive()
|
|
{
|
|
switch ($this->mode) {
|
|
case NET_SCP_SSH2:
|
|
return $this->ssh->_get_channel_packet(NET_SSH2_CHANNEL_EXEC, true);
|
|
case NET_SCP_SSH1:
|
|
if (!$this->ssh->bitmap) {
|
|
return false;
|
|
}
|
|
while (true) {
|
|
$response = $this->ssh->_get_binary_packet();
|
|
switch ($response[NET_SSH1_RESPONSE_TYPE]) {
|
|
case NET_SSH1_SMSG_STDOUT_DATA:
|
|
extract(unpack('Nlength', $response[NET_SSH1_RESPONSE_DATA]));
|
|
return $this->ssh->_string_shift($response[NET_SSH1_RESPONSE_DATA], $length);
|
|
case NET_SSH1_SMSG_STDERR_DATA:
|
|
break;
|
|
case NET_SSH1_SMSG_EXITSTATUS:
|
|
$this->ssh->_send_binary_packet(chr(NET_SSH1_CMSG_EXIT_CONFIRMATION));
|
|
fclose($this->ssh->fsock);
|
|
$this->ssh->bitmap = 0;
|
|
return false;
|
|
default:
|
|
user_error('Unknown packet received', E_USER_NOTICE);
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Closes the connection to an SSH server
|
|
*
|
|
* @access private
|
|
*/
|
|
function _close()
|
|
{
|
|
switch ($this->mode) {
|
|
case NET_SCP_SSH2:
|
|
$this->ssh->_close_channel(NET_SSH2_CHANNEL_EXEC, true);
|
|
break;
|
|
case NET_SCP_SSH1:
|
|
$this->ssh->disconnect();
|
|
}
|
|
}
|
|
}
|