diff options
author | Guillaume Mazoyer <gmazoyer@gravitons.in> | 2016-10-13 00:09:27 +0200 |
---|---|---|
committer | Guillaume Mazoyer <gmazoyer@gravitons.in> | 2016-10-13 00:09:27 +0200 |
commit | 0c88979c7cb668b71d013d71593860754bf9fe1a (patch) | |
tree | 9366992dad9d7aff77605227854a19477eae9cc2 /libs/phpseclib-1.0.4/phpseclib/Net | |
parent | 2b24d1f664d8f493ae17d8c2fc20ab5b065d08a4 (diff) |
Fix phpseclib include.
Diffstat (limited to 'libs/phpseclib-1.0.4/phpseclib/Net')
-rw-r--r-- | libs/phpseclib-1.0.4/phpseclib/Net/SCP.php | 370 | ||||
-rw-r--r-- | libs/phpseclib-1.0.4/phpseclib/Net/SFTP.php | 3016 | ||||
-rw-r--r-- | libs/phpseclib-1.0.4/phpseclib/Net/SFTP/Stream.php | 815 | ||||
-rw-r--r-- | libs/phpseclib-1.0.4/phpseclib/Net/SSH1.php | 1666 | ||||
-rw-r--r-- | libs/phpseclib-1.0.4/phpseclib/Net/SSH2.php | 4292 |
5 files changed, 0 insertions, 10159 deletions
diff --git a/libs/phpseclib-1.0.4/phpseclib/Net/SCP.php b/libs/phpseclib-1.0.4/phpseclib/Net/SCP.php deleted file mode 100644 index 83ae5cc..0000000 --- a/libs/phpseclib-1.0.4/phpseclib/Net/SCP.php +++ /dev/null @@ -1,370 +0,0 @@ -<?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 2010 Jim Wigginton - * @license http://www.opensource.org/licenses/mit-license.html MIT License - * @link http://phpseclib.sourceforge.net - */ - -/**#@+ - * @access public - * @see self::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 self::_send() - * @see self::_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> - * @access public - */ -class Net_SCP -{ - /** - * SSH Object - * - * @var object - * @access private - */ - var $ssh; - - /** - * Packet Size - * - * @var int - * @access private - */ - var $packet_size; - - /** - * Mode - * - * @var int - * @access private - */ - var $mode; - - /** - * Default Constructor. - * - * Connects to an SSH server - * - * @param Net_SSH1|Net_SSH2 $ssh - * @return Net_SCP - * @access public - */ - function __construct($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; - } - - /** - * PHP4 compatible Default Constructor. - * - * @see self::__construct() - * @param Net_SSH1|Net_SSH2 $ssh - * @access public - */ - function Net_SCP($ssh) - { - $this->__construct($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 int $mode - * @param callable $callback - * @return bool - * @access public - */ - function put($remote_file, $data, $mode = NET_SCP_STRING, $callback = null) - { - if (!isset($this->ssh)) { - return false; - } - - if (!$this->ssh->exec('scp -t ' . escapeshellarg($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) { - 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($callback)) { - call_user_func($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 string $local_file - * @return mixed - * @access public - */ - function get($remote_file, $local_file = false) - { - if (!isset($this->ssh)) { - return false; - } - - if (!$this->ssh->exec('scp -f ' . escapeshellarg($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(); - } - } -} diff --git a/libs/phpseclib-1.0.4/phpseclib/Net/SFTP.php b/libs/phpseclib-1.0.4/phpseclib/Net/SFTP.php deleted file mode 100644 index a279bdf..0000000 --- a/libs/phpseclib-1.0.4/phpseclib/Net/SFTP.php +++ /dev/null @@ -1,3016 +0,0 @@ -<?php - -/** - * Pure-PHP implementation of SFTP. - * - * PHP versions 4 and 5 - * - * Currently only supports SFTPv2 and v3, which, according to wikipedia.org, "is the most widely used version, - * implemented by the popular OpenSSH SFTP server". If you want SFTPv4/5/6 support, provide me with access - * to an SFTPv4/5/6 server. - * - * 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/SFTP.php'; - * - * $sftp = new Net_SFTP('www.domain.tld'); - * if (!$sftp->login('username', 'password')) { - * exit('Login Failed'); - * } - * - * echo $sftp->pwd() . "\r\n"; - * $sftp->put('filename.ext', 'hello, world!'); - * print_r($sftp->nlist()); - * ?> - * </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_SFTP - * @author Jim Wigginton <terrafrost@php.net> - * @copyright 2009 Jim Wigginton - * @license http://www.opensource.org/licenses/mit-license.html MIT License - * @link http://phpseclib.sourceforge.net - */ - -/** - * Include Net_SSH2 - */ -if (!class_exists('Net_SSH2')) { - include_once 'SSH2.php'; -} - -/**#@+ - * @access public - * @see self::getLog() - */ -/** - * Returns the message numbers - */ -define('NET_SFTP_LOG_SIMPLE', NET_SSH2_LOG_SIMPLE); -/** - * Returns the message content - */ -define('NET_SFTP_LOG_COMPLEX', NET_SSH2_LOG_COMPLEX); -/** - * Outputs the message content in real-time. - */ -define('NET_SFTP_LOG_REALTIME', 3); -/**#@-*/ - -/** - * SFTP channel constant - * - * Net_SSH2::exec() uses 0 and Net_SSH2::read() / Net_SSH2::write() use 1. - * - * @see Net_SSH2::_send_channel_packet() - * @see Net_SSH2::_get_channel_packet() - * @access private - */ -define('NET_SFTP_CHANNEL', 0x100); - -/**#@+ - * @access public - * @see self::put() - */ -/** - * Reads data from a local file. - */ -define('NET_SFTP_LOCAL_FILE', 1); -/** - * Reads data from a string. - */ -// this value isn't really used anymore but i'm keeping it reserved for historical reasons -define('NET_SFTP_STRING', 2); -/** - * Reads data from callback: - * function callback($length) returns string to proceed, null for EOF - */ -define('NET_SFTP_CALLBACK', 16); -/** - * Resumes an upload - */ -define('NET_SFTP_RESUME', 4); -/** - * Append a local file to an already existing remote file - */ -define('NET_SFTP_RESUME_START', 8); -/**#@-*/ - -/** - * Pure-PHP implementations of SFTP. - * - * @package Net_SFTP - * @author Jim Wigginton <terrafrost@php.net> - * @access public - */ -class Net_SFTP extends Net_SSH2 -{ - /** - * Packet Types - * - * @see self::Net_SFTP() - * @var array - * @access private - */ - var $packet_types = array(); - - /** - * Status Codes - * - * @see self::Net_SFTP() - * @var array - * @access private - */ - var $status_codes = array(); - - /** - * The Request ID - * - * The request ID exists in the off chance that a packet is sent out-of-order. Of course, this library doesn't support - * concurrent actions, so it's somewhat academic, here. - * - * @var int - * @see self::_send_sftp_packet() - * @access private - */ - var $request_id = false; - - /** - * The Packet Type - * - * The request ID exists in the off chance that a packet is sent out-of-order. Of course, this library doesn't support - * concurrent actions, so it's somewhat academic, here. - * - * @var int - * @see self::_get_sftp_packet() - * @access private - */ - var $packet_type = -1; - - /** - * Packet Buffer - * - * @var string - * @see self::_get_sftp_packet() - * @access private - */ - var $packet_buffer = ''; - - /** - * Extensions supported by the server - * - * @var array - * @see self::_initChannel() - * @access private - */ - var $extensions = array(); - - /** - * Server SFTP version - * - * @var int - * @see self::_initChannel() - * @access private - */ - var $version; - - /** - * Current working directory - * - * @var string - * @see self::_realpath() - * @see self::chdir() - * @access private - */ - var $pwd = false; - - /** - * Packet Type Log - * - * @see self::getLog() - * @var array - * @access private - */ - var $packet_type_log = array(); - - /** - * Packet Log - * - * @see self::getLog() - * @var array - * @access private - */ - var $packet_log = array(); - - /** - * Error information - * - * @see self::getSFTPErrors() - * @see self::getLastSFTPError() - * @var string - * @access private - */ - var $sftp_errors = array(); - - /** - * Stat Cache - * - * Rather than always having to open a directory and close it immediately there after to see if a file is a directory - * we'll cache the results. - * - * @see self::_update_stat_cache() - * @see self::_remove_from_stat_cache() - * @see self::_query_stat_cache() - * @var array - * @access private - */ - var $stat_cache = array(); - - /** - * Max SFTP Packet Size - * - * @see self::Net_SFTP() - * @see self::get() - * @var array - * @access private - */ - var $max_sftp_packet; - - /** - * Stat Cache Flag - * - * @see self::disableStatCache() - * @see self::enableStatCache() - * @var bool - * @access private - */ - var $use_stat_cache = true; - - /** - * Sort Options - * - * @see self::_comparator() - * @see self::setListOrder() - * @var array - * @access private - */ - var $sortOptions = array(); - - /** - * Default Constructor. - * - * Connects to an SFTP server - * - * @param string $host - * @param int $port - * @param int $timeout - * @return Net_SFTP - * @access public - */ - function __construct($host, $port = 22, $timeout = 10) - { - parent::__construct($host, $port, $timeout); - - $this->max_sftp_packet = 1 << 15; - - $this->packet_types = array( - 1 => 'NET_SFTP_INIT', - 2 => 'NET_SFTP_VERSION', - /* the format of SSH_FXP_OPEN changed between SFTPv4 and SFTPv5+: - SFTPv5+: http://tools.ietf.org/html/draft-ietf-secsh-filexfer-13#section-8.1.1 - pre-SFTPv5 : http://tools.ietf.org/html/draft-ietf-secsh-filexfer-04#section-6.3 */ - 3 => 'NET_SFTP_OPEN', - 4 => 'NET_SFTP_CLOSE', - 5 => 'NET_SFTP_READ', - 6 => 'NET_SFTP_WRITE', - 7 => 'NET_SFTP_LSTAT', - 9 => 'NET_SFTP_SETSTAT', - 11 => 'NET_SFTP_OPENDIR', - 12 => 'NET_SFTP_READDIR', - 13 => 'NET_SFTP_REMOVE', - 14 => 'NET_SFTP_MKDIR', - 15 => 'NET_SFTP_RMDIR', - 16 => 'NET_SFTP_REALPATH', - 17 => 'NET_SFTP_STAT', - /* the format of SSH_FXP_RENAME changed between SFTPv4 and SFTPv5+: - SFTPv5+: http://tools.ietf.org/html/draft-ietf-secsh-filexfer-13#section-8.3 - pre-SFTPv5 : http://tools.ietf.org/html/draft-ietf-secsh-filexfer-04#section-6.5 */ - 18 => 'NET_SFTP_RENAME', - 19 => 'NET_SFTP_READLINK', - 20 => 'NET_SFTP_SYMLINK', - - 101=> 'NET_SFTP_STATUS', - 102=> 'NET_SFTP_HANDLE', - /* the format of SSH_FXP_NAME changed between SFTPv3 and SFTPv4+: - SFTPv4+: http://tools.ietf.org/html/draft-ietf-secsh-filexfer-13#section-9.4 - pre-SFTPv4 : http://tools.ietf.org/html/draft-ietf-secsh-filexfer-02#section-7 */ - 103=> 'NET_SFTP_DATA', - 104=> 'NET_SFTP_NAME', - 105=> 'NET_SFTP_ATTRS', - - 200=> 'NET_SFTP_EXTENDED' - ); - $this->status_codes = array( - 0 => 'NET_SFTP_STATUS_OK', - 1 => 'NET_SFTP_STATUS_EOF', - 2 => 'NET_SFTP_STATUS_NO_SUCH_FILE', - 3 => 'NET_SFTP_STATUS_PERMISSION_DENIED', - 4 => 'NET_SFTP_STATUS_FAILURE', - 5 => 'NET_SFTP_STATUS_BAD_MESSAGE', - 6 => 'NET_SFTP_STATUS_NO_CONNECTION', - 7 => 'NET_SFTP_STATUS_CONNECTION_LOST', - 8 => 'NET_SFTP_STATUS_OP_UNSUPPORTED', - 9 => 'NET_SFTP_STATUS_INVALID_HANDLE', - 10 => 'NET_SFTP_STATUS_NO_SUCH_PATH', - 11 => 'NET_SFTP_STATUS_FILE_ALREADY_EXISTS', - 12 => 'NET_SFTP_STATUS_WRITE_PROTECT', - 13 => 'NET_SFTP_STATUS_NO_MEDIA', - 14 => 'NET_SFTP_STATUS_NO_SPACE_ON_FILESYSTEM', - 15 => 'NET_SFTP_STATUS_QUOTA_EXCEEDED', - 16 => 'NET_SFTP_STATUS_UNKNOWN_PRINCIPAL', - 17 => 'NET_SFTP_STATUS_LOCK_CONFLICT', - 18 => 'NET_SFTP_STATUS_DIR_NOT_EMPTY', - 19 => 'NET_SFTP_STATUS_NOT_A_DIRECTORY', - 20 => 'NET_SFTP_STATUS_INVALID_FILENAME', - 21 => 'NET_SFTP_STATUS_LINK_LOOP', - 22 => 'NET_SFTP_STATUS_CANNOT_DELETE', - 23 => 'NET_SFTP_STATUS_INVALID_PARAMETER', - 24 => 'NET_SFTP_STATUS_FILE_IS_A_DIRECTORY', - 25 => 'NET_SFTP_STATUS_BYTE_RANGE_LOCK_CONFLICT', - 26 => 'NET_SFTP_STATUS_BYTE_RANGE_LOCK_REFUSED', - 27 => 'NET_SFTP_STATUS_DELETE_PENDING', - 28 => 'NET_SFTP_STATUS_FILE_CORRUPT', - 29 => 'NET_SFTP_STATUS_OWNER_INVALID', - 30 => 'NET_SFTP_STATUS_GROUP_INVALID', - 31 => 'NET_SFTP_STATUS_NO_MATCHING_BYTE_RANGE_LOCK' - ); - // http://tools.ietf.org/html/draft-ietf-secsh-filexfer-13#section-7.1 - // the order, in this case, matters quite a lot - see Net_SFTP::_parseAttributes() to understand why - $this->attributes = array( - 0x00000001 => 'NET_SFTP_ATTR_SIZE', - 0x00000002 => 'NET_SFTP_ATTR_UIDGID', // defined in SFTPv3, removed in SFTPv4+ - 0x00000004 => 'NET_SFTP_ATTR_PERMISSIONS', - 0x00000008 => 'NET_SFTP_ATTR_ACCESSTIME', - // 0x80000000 will yield a floating point on 32-bit systems and converting floating points to integers - // yields inconsistent behavior depending on how php is compiled. so we left shift -1 (which, in - // two's compliment, consists of all 1 bits) by 31. on 64-bit systems this'll yield 0xFFFFFFFF80000000. - // that's not a problem, however, and 'anded' and a 32-bit number, as all the leading 1 bits are ignored. - -1 << 31 => 'NET_SFTP_ATTR_EXTENDED' - ); - // http://tools.ietf.org/html/draft-ietf-secsh-filexfer-04#section-6.3 - // the flag definitions change somewhat in SFTPv5+. if SFTPv5+ support is added to this library, maybe name - // the array for that $this->open5_flags and similarly alter the constant names. - $this->open_flags = array( - 0x00000001 => 'NET_SFTP_OPEN_READ', - 0x00000002 => 'NET_SFTP_OPEN_WRITE', - 0x00000004 => 'NET_SFTP_OPEN_APPEND', - 0x00000008 => 'NET_SFTP_OPEN_CREATE', - 0x00000010 => 'NET_SFTP_OPEN_TRUNCATE', - 0x00000020 => 'NET_SFTP_OPEN_EXCL' - ); - // http://tools.ietf.org/html/draft-ietf-secsh-filexfer-04#section-5.2 - // see Net_SFTP::_parseLongname() for an explanation - $this->file_types = array( - 1 => 'NET_SFTP_TYPE_REGULAR', - 2 => 'NET_SFTP_TYPE_DIRECTORY', - 3 => 'NET_SFTP_TYPE_SYMLINK', - 4 => 'NET_SFTP_TYPE_SPECIAL', - 5 => 'NET_SFTP_TYPE_UNKNOWN', - // the followin types were first defined for use in SFTPv5+ - // http://tools.ietf.org/html/draft-ietf-secsh-filexfer-05#section-5.2 - 6 => 'NET_SFTP_TYPE_SOCKET', - 7 => 'NET_SFTP_TYPE_CHAR_DEVICE', - 8 => 'NET_SFTP_TYPE_BLOCK_DEVICE', - 9 => 'NET_SFTP_TYPE_FIFO' - ); - $this->_define_array( - $this->packet_types, - $this->status_codes, - $this->attributes, - $this->open_flags, - $this->file_types - ); - - if (!defined('NET_SFTP_QUEUE_SIZE')) { - define('NET_SFTP_QUEUE_SIZE', 50); - } - } - - /** - * PHP4 compatible Default Constructor. - * - * @see self::__construct() - * @param string $host - * @param int $port - * @param int $timeout - * @access public - */ - function Net_SFTP($host, $port = 22, $timeout = 10) - { - $this->__construct($host, $port, $timeout); - } - - /** - * Login - * - * @param string $username - * @param string $password - * @return bool - * @access public - */ - function login($username) - { - $args = func_get_args(); - if (!call_user_func_array(array(&$this, '_login'), $args)) { - return false; - } - - $this->window_size_server_to_client[NET_SFTP_CHANNEL] = $this->window_size; - - $packet = pack( - 'CNa*N3', - NET_SSH2_MSG_CHANNEL_OPEN, - strlen('session'), - 'session', - NET_SFTP_CHANNEL, - $this->window_size, - 0x4000 - ); - - if (!$this->_send_binary_packet($packet)) { - return false; - } - - $this->channel_status[NET_SFTP_CHANNEL] = NET_SSH2_MSG_CHANNEL_OPEN; - - $response = $this->_get_channel_packet(NET_SFTP_CHANNEL); - if ($response === false) { - return false; - } - - $packet = pack( - 'CNNa*CNa*', - NET_SSH2_MSG_CHANNEL_REQUEST, - $this->server_channels[NET_SFTP_CHANNEL], - strlen('subsystem'), - 'subsystem', - 1, - strlen('sftp'), - 'sftp' - ); - if (!$this->_send_binary_packet($packet)) { - return false; - } - - $this->channel_status[NET_SFTP_CHANNEL] = NET_SSH2_MSG_CHANNEL_REQUEST; - - $response = $this->_get_channel_packet(NET_SFTP_CHANNEL); - if ($response === false) { - // from PuTTY's psftp.exe - $command = "test -x /usr/lib/sftp-server && exec /usr/lib/sftp-server\n" . - "test -x /usr/local/lib/sftp-server && exec /usr/local/lib/sftp-server\n" . - "exec sftp-server"; - // we don't do $this->exec($command, false) because exec() operates on a different channel and plus the SSH_MSG_CHANNEL_OPEN that exec() does - // is redundant - $packet = pack( - 'CNNa*CNa*', - NET_SSH2_MSG_CHANNEL_REQUEST, - $this->server_channels[NET_SFTP_CHANNEL], - strlen('exec'), - 'exec', - 1, - strlen($command), - $command - ); - if (!$this->_send_binary_packet($packet)) { - return false; - } - - $this->channel_status[NET_SFTP_CHANNEL] = NET_SSH2_MSG_CHANNEL_REQUEST; - - $response = $this->_get_channel_packet(NET_SFTP_CHANNEL); - if ($response === false) { - return false; - } - } - - $this->channel_status[NET_SFTP_CHANNEL] = NET_SSH2_MSG_CHANNEL_DATA; - - if (!$this->_send_sftp_packet(NET_SFTP_INIT, "\0\0\0\3")) { - return false; - } - - $response = $this->_get_sftp_packet(); - if ($this->packet_type != NET_SFTP_VERSION) { - user_error('Expected SSH_FXP_VERSION'); - return false; - } - - extract(unpack('Nversion', $this->_string_shift($response, 4))); - $this->version = $version; - while (!empty($response)) { - extract(unpack('Nlength', $this->_string_shift($response, 4))); - $key = $this->_string_shift($response, $length); - extract(unpack('Nlength', $this->_string_shift($response, 4))); - $value = $this->_string_shift($response, $length); - $this->extensions[$key] = $value; - } - - /* - SFTPv4+ defines a 'newline' extension. SFTPv3 seems to have unofficial support for it via 'newline@vandyke.com', - however, I'm not sure what 'newline@vandyke.com' is supposed to do (the fact that it's unofficial means that it's - not in the official SFTPv3 specs) and 'newline@vandyke.com' / 'newline' are likely not drop-in substitutes for - one another due to the fact that 'newline' comes with a SSH_FXF_TEXT bitmask whereas it seems unlikely that - 'newline@vandyke.com' would. - */ - /* - if (isset($this->extensions['newline@vandyke.com'])) { - $this->extensions['newline'] = $this->extensions['newline@vandyke.com']; - unset($this->extensions['newline@vandyke.com']); - } - */ - - $this->request_id = 1; - - /* - A Note on SFTPv4/5/6 support: - <http://tools.ietf.org/html/draft-ietf-secsh-filexfer-13#section-5.1> states the following: - - "If the client wishes to interoperate with servers that support noncontiguous version - numbers it SHOULD send '3'" - - Given that the server only sends its version number after the client has already done so, the above - seems to be suggesting that v3 should be the default version. This makes sense given that v3 is the - most popular. - - <http://tools.ietf.org/html/draft-ietf-secsh-filexfer-13#section-5.5> states the following; - - "If the server did not send the "versions" extension, or the version-from-list was not included, the - server MAY send a status response describing the failure, but MUST then close the channel without - processing any further requests." - - So what do you do if you have a client whose initial SSH_FXP_INIT packet says it implements v3 and - a server whose initial SSH_FXP_VERSION reply says it implements v4 and only v4? If it only implements - v4, the "versions" extension is likely not going to have been sent so version re-negotiation as discussed - in draft-ietf-secsh-filexfer-13 would be quite impossible. As such, what Net_SFTP would do is close the - channel and reopen it with a new and updated SSH_FXP_INIT packet. - */ - switch ($this->version) { - case 2: - case 3: - break; - default: - return false; - } - - $this->pwd = $this->_realpath('.'); - - $this->_update_stat_cache($this->pwd, array()); - - return true; - } - - /** - * Disable the stat cache - * - * @access public - */ - function disableStatCache() - { - $this->use_stat_cache = false; - } - - /** - * Enable the stat cache - * - * @access public - */ - function enableStatCache() - { - $this->use_stat_cache = true; - } - - /** - * Clear the stat cache - * - * @access public - */ - function clearStatCache() - { - $this->stat_cache = array(); - } - - /** - * Returns the current directory name - * - * @return mixed - * @access public - */ - function pwd() - { - return $this->pwd; - } - - /** - * Logs errors - * - * @param string $response - * @param int $status - * @access public - */ - function _logError($response, $status = -1) - { - if ($status == -1) { - extract(unpack('Nstatus', $this->_string_shift($response, 4))); - } - - $error = $this->status_codes[$status]; - - if ($this->version > 2) { - extract(unpack('Nlength', $this->_string_shift($response, 4))); - $this->sftp_errors[] = $error . ': ' . $this->_string_shift($response, $length); - } else { - $this->sftp_errors[] = $error; - } - } - - /** - * Returns canonicalized absolute pathname - * - * realpath() expands all symbolic links and resolves references to '/./', '/../' and extra '/' characters in the input - * path and returns the canonicalized absolute pathname. - * - * @param string $path - * @return mixed - * @access public - */ - function realpath($path) - { - return $this->_realpath($path); - } - - /** - * Canonicalize the Server-Side Path Name - * - * SFTP doesn't provide a mechanism by which the current working directory can be changed, so we'll emulate it. Returns - * the absolute (canonicalized) path. - * - * @see self::chdir() - * @param string $path - * @return mixed - * @access private - */ - function _realpath($path) - { - if ($this->pwd === false) { - // http://tools.ietf.org/html/draft-ietf-secsh-filexfer-13#section-8.9 - if (!$this->_send_sftp_packet(NET_SFTP_REALPATH, pack('Na*', strlen($path), $path))) { - return false; - } - - $response = $this->_get_sftp_packet(); - switch ($this->packet_type) { - case NET_SFTP_NAME: - // although SSH_FXP_NAME is implemented differently in SFTPv3 than it is in SFTPv4+, the following - // should work on all SFTP versions since the only part of the SSH_FXP_NAME packet the following looks - // at is the first part and that part is defined the same in SFTP versions 3 through 6. - $this->_string_shift($response, 4); // skip over the count - it should be 1, anyway - extract(unpack('Nlength', $this->_string_shift($response, 4))); - return $this->_string_shift($response, $length); - case NET_SFTP_STATUS: - $this->_logError($response); - return false; - default: - user_error('Expected SSH_FXP_NAME or SSH_FXP_STATUS'); - return false; - } - } - - if ($path[0] != '/') { - $path = $this->pwd . '/' . $path; - } - - $path = explode('/', $path); - $new = array(); - foreach ($path as $dir) { - if (!strlen($dir)) { - continue; - } - switch ($dir) { - case '..': - array_pop($new); - case '.': - break; - default: - $new[] = $dir; - } - } - - return '/' . implode('/', $new); - } - - /** - * Changes the current directory - * - * @param string $dir - * @return bool - * @access public - */ - function chdir($dir) - { - if (!($this->bitmap & NET_SSH2_MASK_LOGIN)) { - return false; - } - - // assume current dir if $dir is empty - if ($dir === '') { - $dir = './'; - // suffix a slash if needed - } elseif ($dir[strlen($dir) - 1] != '/') { - $dir.= '/'; - } - - $dir = $this->_realpath($dir); - - // confirm that $dir is, in fact, a valid directory - if ($this->use_stat_cache && is_array($this->_query_stat_cache($dir))) { - $this->pwd = $dir; - return true; - } - - // we could do a stat on the alleged $dir to see if it's a directory but that doesn't tell us - // the currently logged in user has the appropriate permissions or not. maybe you could see if - // the file's uid / gid match the currently logged in user's uid / gid but how there's no easy - // way to get those with SFTP - - if (!$this->_send_sftp_packet(NET_SFTP_OPENDIR, pack('Na*', strlen($dir), $dir))) { - return false; - } - - // see Net_SFTP::nlist() for a more thorough explanation of the following - $response = $this->_get_sftp_packet(); - switch ($this->packet_type) { - case NET_SFTP_HANDLE: - $handle = substr($response, 4); - break; - case NET_SFTP_STATUS: - $this->_logError($response); - return false; - default: - user_error('Expected SSH_FXP_HANDLE or SSH_FXP_STATUS'); - return false; - } - - if (!$this->_close_handle($handle)) { - return false; - } - - $this->_update_stat_cache($dir, array()); - - $this->pwd = $dir; - return true; - } - - /** - * Returns a list of files in the given directory - * - * @param string $dir - * @param bool $recursive - * @return mixed - * @access public - */ - function nlist($dir = '.', $recursive = false) - { - return $this->_nlist_helper($dir, $recursive, ''); - } - - /** - * Helper method for nlist - * - * @param string $dir - * @param bool $recursive - * @param string $relativeDir - * @return mixed - * @access private - */ - function _nlist_helper($dir, $recursive, $relativeDir) - { - $files = $this->_list($dir, false); - - if (!$recursive || $files === false) { - return $files; - } - - $result = array(); - foreach ($files as $value) { - if ($value == '.' || $value == '..') { - if ($relativeDir == '') { - $result[] = $value; - } - continue; - } - if (is_array($this->_query_stat_cache($this->_realpath($dir . '/' . $value)))) { - $temp = $this->_nlist_helper($dir . '/' . $value, true, $relativeDir . $value . '/'); - $result = array_merge($result, $temp); - } else { - $result[] = $relativeDir . $value; - } - } - - return $result; - } - - /** - * Returns a detailed list of files in the given directory - * - * @param string $dir - * @param bool $recursive - * @return mixed - * @access public - */ - function rawlist($dir = '.', $recursive = false) - { - $files = $this->_list($dir, true); - if (!$recursive || $files === false) { - return $files; - } - - static $depth = 0; - - foreach ($files as $key => $value) { - if ($depth != 0 && $key == '..') { - unset($files[$key]); - continue; - } - if ($key != '.' && $key != '..' && is_array($this->_query_stat_cache($this->_realpath($dir . '/' . $key)))) { - $depth++; - $files[$key] = $this->rawlist($dir . '/' . $key, true); - $depth--; - } else { - $files[$key] = (object) $value; - } - } - - return $files; - } - - /** - * Reads a list, be it detailed or not, of files in the given directory - * - * @param string $dir - * @param bool $raw - * @return mixed - * @access private - */ - function _list($dir, $raw = true) - { - if (!($this->bitmap & NET_SSH2_MASK_LOGIN)) { - return false; - } - - $dir = $this->_realpath($dir . '/'); - if ($dir === false) { - return false; - } - - // http://tools.ietf.org/html/draft-ietf-secsh-filexfer-13#section-8.1.2 - if (!$this->_send_sftp_packet(NET_SFTP_OPENDIR, pack('Na*', strlen($dir), $dir))) { - return false; - } - - $response = $this->_get_sftp_packet(); - switch ($this->packet_type) { - case NET_SFTP_HANDLE: - // http://tools.ietf.org/html/draft-ietf-secsh-filexfer-13#section-9.2 - // since 'handle' is the last field in the SSH_FXP_HANDLE packet, we'll just remove the first four bytes that - // represent the length of the string and leave it at that - $handle = substr($response, 4); - break; - case NET_SFTP_STATUS: - // presumably SSH_FX_NO_SUCH_FILE or SSH_FX_PERMISSION_DENIED - $this->_logError($response); - return false; - default: - user_error('Expected SSH_FXP_HANDLE or SSH_FXP_STATUS'); - return false; - } - - $this->_update_stat_cache($dir, array()); - - $contents = array(); - while (true) { - // http://tools.ietf.org/html/draft-ietf-secsh-filexfer-13#section-8.2.2 - // why multiple SSH_FXP_READDIR packets would be sent when the response to a single one can span arbitrarily many - // SSH_MSG_CHANNEL_DATA messages is not known to me. - if (!$this->_send_sftp_packet(NET_SFTP_READDIR, pack('Na*', strlen($handle), $handle))) { - return false; - } - - $response = $this->_get_sftp_packet(); - switch ($this->packet_type) { - case NET_SFTP_NAME: - extract(unpack('Ncount', $this->_string_shift($response, 4))); - for ($i = 0; $i < $count; $i++) { - extract(unpack('Nlength', $this->_string_shift($response, 4))); - $shortname = $this->_string_shift($response, $length); - extract(unpack('Nlength', $this->_string_shift($response, 4))); - $longname = $this->_string_shift($response, $length); - $attributes = $this->_parseAttributes($response); - if (!isset($attributes['type'])) { - $fileType = $this->_parseLongname($longname); - if ($fileType) { - $attributes['type'] = $fileType; - } - } - $contents[$shortname] = $attributes + array('filename' => $shortname); - - if (isset($attributes['type']) && $attributes['type'] == NET_SFTP_TYPE_DIRECTORY && ($shortname != '.' && $shortname != '..')) { - $this->_update_stat_cache($dir . '/' . $shortname, array()); - } else { - if ($shortname == '..') { - $temp = $this->_realpath($dir . '/..') . '/.'; - } else { - $temp = $dir . '/' . $shortname; - } - $this->_update_stat_cache($temp, (object) array('lstat' => $attributes)); - } - // SFTPv6 has an optional boolean end-of-list field, but we'll ignore that, since the - // final SSH_FXP_STATUS packet should tell us that, already. - } - break; - case NET_SFTP_STATUS: - extract(unpack('Nstatus', $this->_string_shift($response, 4))); - if ($status != NET_SFTP_STATUS_EOF) { - $this->_logError($response, $status); - return false; - } - break 2; - default: - user_error('Expected SSH_FXP_NAME or SSH_FXP_STATUS'); - return false; - } - } - - if (!$this->_close_handle($handle)) { - return false; - } - - if (count($this->sortOptions)) { - uasort($contents, array(&$this, '_comparator')); - } - - return $raw ? $contents : array_keys($contents); - } - - /** - * Compares two rawlist entries using parameters set by setListOrder() - * - * Intended for use with uasort() - * - * @param array $a - * @param array $b - * @return int - * @access private - */ - function _comparator($a, $b) - { - switch (true) { - case $a['filename'] === '.' || $b['filename'] === '.': - if ($a['filename'] === $b['filename']) { - return 0; - } - return $a['filename'] === '.' ? -1 : 1; - case $a['filename'] === '..' || $b['filename'] === '..': - if ($a['filename'] === $b['filename']) { - return 0; - } - return $a['filename'] === '..' ? -1 : 1; - case isset($a['type']) && $a['type'] === NET_SFTP_TYPE_DIRECTORY: - if (!isset($b['type'])) { - return 1; - } - if ($b['type'] !== $a['type']) { - return -1; - } - break; - case isset($b['type']) && $b['type'] === NET_SFTP_TYPE_DIRECTORY: - return 1; - } - foreach ($this->sortOptions as $sort => $order) { - if (!isset($a[$sort]) || !isset($b[$sort])) { - if (isset($a[$sort])) { - return -1; - } - if (isset($b[$sort])) { - return 1; - } - return 0; - } - switch ($sort) { - case 'filename': - $result = strcasecmp($a['filename'], $b['filename']); - if ($result) { - return $order === SORT_DESC ? -$result : $result; - } - break; - case 'permissions': - case 'mode': - $a[$sort]&= 07777; - $b[$sort]&= 07777; - default: - if ($a[$sort] === $b[$sort]) { - break; - } - return $order === SORT_ASC ? $a[$sort] - $b[$sort] : $b[$sort] - $a[$sort]; - } - } - } - - /** - * Defines how nlist() and rawlist() will be sorted - if at all. - * - * If sorting is enabled directories and files will be sorted independently with - * directories appearing before files in the resultant array that is returned. - * - * Any parameter returned by stat is a valid sort parameter for this function. - * Filename comparisons are case insensitive. - * - * Examples: - * - * $sftp->setListOrder('filename', SORT_ASC); - * $sftp->setListOrder('size', SORT_DESC, 'filename', SORT_ASC); - * $sftp->setListOrder(true); - * Separates directories from files but doesn't do any sorting beyond that - * $sftp->setListOrder(); - * Don't do any sort of sorting - * - * @access public - */ - function setListOrder() - { - $this->sortOptions = array(); - $args = func_get_args(); - if (empty($args)) { - return; - } - $len = count($args) & 0x7FFFFFFE; - for ($i = 0; $i < $len; $i+=2) { - $this->sortOptions[$args[$i]] = $args[$i + 1]; - } - if (!count($this->sortOptions)) { - $this->sortOptions = array('bogus' => true); - } - } - - /** - * Returns the file size, in bytes, or false, on failure - * - * Files larger than 4GB will show up as being exactly 4GB. - * - * @param string $filename - * @return mixed - * @access public - */ - function size($filename) - { - if (!($this->bitmap & NET_SSH2_MASK_LOGIN)) { - return false; - } - - $result = $this->stat($filename); - if ($result === false) { - return false; - } - return isset($result['size']) ? $result['size'] : -1; - } - - /** - * Save files / directories to cache - * - * @param string $path - * @param mixed $value - * @access private - */ - function _update_stat_cache($path, $value) - { - if ($this->use_stat_cache === false) { - return; - } - - // preg_replace('#^/|/(?=/)|/$#', '', $dir) == str_replace('//', '/', trim($path, '/')) - $dirs = explode('/', preg_replace('#^/|/(?=/)|/$#', '', $path)); - - $temp = &$this->stat_cache; - $max = count($dirs) - 1; - foreach ($dirs as $i => $dir) { - // if $temp is an object that means one of two things. - // 1. a file was deleted and changed to a directory behind phpseclib's back - // 2. it's a symlink. when lstat is done it's unclear what it's a symlink to - if (is_object($temp)) { - $temp = array(); - } - if (!isset($temp[$dir])) { - $temp[$dir] = array(); - } - if ($i === $max) { - if (is_object($temp[$dir])) { - if (!isset($value->stat) && isset($temp[$dir]->stat)) { - $value->stat = $temp[$dir]->stat; - } - if (!isset($value->lstat) && isset($temp[$dir]->lstat)) { - $value->lstat = $temp[$dir]->lstat; - } - } - $temp[$dir] = $value; - break; - } - $temp = &$temp[$dir]; - } - } - - /** - * Remove files / directories from cache - * - * @param string $path - * @return bool - * @access private - */ - function _remove_from_stat_cache($path) - { - $dirs = explode('/', preg_replace('#^/|/(?=/)|/$#', '', $path)); - - $temp = &$this->stat_cache; - $max = count($dirs) - 1; - foreach ($dirs as $i => $dir) { - if ($i === $max) { - unset($temp[$dir]); - return true; - } - if (!isset($temp[$dir])) { - return false; - } - $temp = &$temp[$dir]; - } - } - - /** - * Checks cache for path - * - * Mainly used by file_exists - * - * @param string $dir - * @return mixed - * @access private - */ - function _query_stat_cache($path) - { - $dirs = explode('/', preg_replace('#^/|/(?=/)|/$#', '', $path)); - - $temp = &$this->stat_cache; - foreach ($dirs as $dir) { - if (!isset($temp[$dir])) { - return null; - } - $temp = &$temp[$dir]; - } - return $temp; - } - - /** - * Returns general information about a file. - * - * Returns an array on success and false otherwise. - * - * @param string $filename - * @return mixed - * @access public - */ - function stat($filename) - { - if (!($this->bitmap & NET_SSH2_MASK_LOGIN)) { - return false; - } - - $filename = $this->_realpath($filename); - if ($filename === false) { - return false; - } - - if ($this->use_stat_cache) { - $result = $this->_query_stat_cache($filename); - if (is_array($result) && isset($result['.']) && isset($result['.']->stat)) { - return $result['.']->stat; - } - if (is_object($result) && isset($result->stat)) { - return $result->stat; - } - } - - $stat = $this->_stat($filename, NET_SFTP_STAT); - if ($stat === false) { - $this->_remove_from_stat_cache($filename); - return false; - } - if (isset($stat['type'])) { - if ($stat['type'] == NET_SFTP_TYPE_DIRECTORY) { - $filename.= '/.'; - } - $this->_update_stat_cache($filename, (object) array('stat' => $stat)); - return $stat; - } - - $pwd = $this->pwd; - $stat['type'] = $this->chdir($filename) ? - NET_SFTP_TYPE_DIRECTORY : - NET_SFTP_TYPE_REGULAR; - $this->pwd = $pwd; - - if ($stat['type'] == NET_SFTP_TYPE_DIRECTORY) { - $filename.= '/.'; - } - $this->_update_stat_cache($filename, (object) array('stat' => $stat)); - - return $stat; - } - - /** - * Returns general information about a file or symbolic link. - * - * Returns an array on success and false otherwise. - * - * @param string $filename - * @return mixed - * @access public - */ - function lstat($filename) - { - if (!($this->bitmap & NET_SSH2_MASK_LOGIN)) { - return false; - } - - $filename = $this->_realpath($filename); - if ($filename === false) { - return false; - } - - if ($this->use_stat_cache) { - $result = $this->_query_stat_cache($filename); - if (is_array($result) && isset($result['.']) && isset($result['.']->lstat)) { - return $result['.']->lstat; - } - if (is_object($result) && isset($result->lstat)) { - return $result->lstat; - } - } - - $lstat = $this->_stat($filename, NET_SFTP_LSTAT); - if ($lstat === false) { - $this->_remove_from_stat_cache($filename); - return false; - } - if (isset($lstat['type'])) { - if ($lstat['type'] == NET_SFTP_TYPE_DIRECTORY) { - $filename.= '/.'; - } - $this->_update_stat_cache($filename, (object) array('lstat' => $lstat)); - return $lstat; - } - - $stat = $this->_stat($filename, NET_SFTP_STAT); - - if ($lstat != $stat) { - $lstat = array_merge($lstat, array('type' => NET_SFTP_TYPE_SYMLINK)); - $this->_update_stat_cache($filename, (object) array('lstat' => $lstat)); - return $stat; - } - - $pwd = $this->pwd; - $lstat['type'] = $this->chdir($filename) ? - NET_SFTP_TYPE_DIRECTORY : - NET_SFTP_TYPE_REGULAR; - $this->pwd = $pwd; - - if ($lstat['type'] == NET_SFTP_TYPE_DIRECTORY) { - $filename.= '/.'; - } - $this->_update_stat_cache($filename, (object) array('lstat' => $lstat)); - - return $lstat; - } - - /** - * Returns general information about a file or symbolic link - * - * Determines information without calling Net_SFTP::_realpath(). - * The second parameter can be either NET_SFTP_STAT or NET_SFTP_LSTAT. - * - * @param string $filename - * @param int $type - * @return mixed - * @access private - */ - function _stat($filename, $type) - { - // SFTPv4+ adds an additional 32-bit integer field - flags - to the following: - $packet = pack('Na*', strlen($filename), $filename); - if (!$this->_send_sftp_packet($type, $packet)) { - return false; - } - - $response = $this->_get_sftp_packet(); - switch ($this->packet_type) { - case NET_SFTP_ATTRS: - return $this->_parseAttributes($response); - case NET_SFTP_STATUS: - $this->_logError($response); - return false; - } - - user_error('Expected SSH_FXP_ATTRS or SSH_FXP_STATUS'); - return false; - } - - /** - * Truncates a file to a given length - * - * @param string $filename - * @param int $new_size - * @return bool - * @access public - */ - function truncate($filename, $new_size) - { - $attr = pack('N3', NET_SFTP_ATTR_SIZE, $new_size / 4294967296, $new_size); // 4294967296 == 0x100000000 == 1<<32 - - return $this->_setstat($filename, $attr, false); - } - - /** - * Sets access and modification time of file. - * - * If the file does not exist, it will be created. - * - * @param string $filename - * @param int $time - * @param int $atime - * @return bool - * @access public - */ - function touch($filename, $time = null, $atime = null) - { - if (!($this->bitmap & NET_SSH2_MASK_LOGIN)) { - return false; - } - - $filename = $this->_realpath($filename); - if ($filename === false) { - return false; - } - - if (!isset($time)) { - $time = time(); - } - if (!isset($atime)) { - $atime = $time; - } - - $flags = NET_SFTP_OPEN_WRITE | NET_SFTP_OPEN_CREATE | NET_SFTP_OPEN_EXCL; - $attr = pack('N3', NET_SFTP_ATTR_ACCESSTIME, $time, $atime); - $packet = pack('Na*Na*', strlen($filename), $filename, $flags, $attr); - if (!$this->_send_sftp_packet(NET_SFTP_OPEN, $packet)) { - return false; - } - - $response = $this->_get_sftp_packet(); - switch ($this->packet_type) { - case NET_SFTP_HANDLE: - return $this->_close_handle(substr($response, 4)); - case NET_SFTP_STATUS: - $this->_logError($response); - break; - default: - user_error('Expected SSH_FXP_HANDLE or SSH_FXP_STATUS'); - return false; - } - - return $this->_setstat($filename, $attr, false); - } - - /** - * Changes file or directory owner - * - * Returns true on success or false on error. - * - * @param string $filename - * @param int $uid - * @param bool $recursive - * @return bool - * @access public - */ - function chown($filename, $uid, $recursive = false) - { - // quoting from <http://www.kernel.org/doc/man-pages/online/pages/man2/chown.2.html>, - // "if the owner or group is specified as -1, then that ID is not changed" - $attr = pack('N3', NET_SFTP_ATTR_UIDGID, $uid, -1); - - return $this->_setstat($filename, $attr, $recursive); - } - - /** - * Changes file or directory group - * - * Returns true on success or false on error. - * - * @param string $filename - * @param int $gid - * @param bool $recursive - * @return bool - * @access public - */ - function chgrp($filename, $gid, $recursive = false) - { - $attr = pack('N3', NET_SFTP_ATTR_UIDGID, -1, $gid); - - return $this->_setstat($filename, $attr, $recursive); - } - - /** - * Set permissions on a file. - * - * Returns the new file permissions on success or false on error. - * If $recursive is true than this just returns true or false. - * - * @param int $mode - * @param string $filename - * @param bool $recursive - * @return mixed - * @access public - */ - function chmod($mode, $filename, $recursive = false) - { - if (is_string($mode) && is_int($filename)) { - $temp = $mode; - $mode = $filename; - $filename = $temp; - } - - $attr = pack('N2', NET_SFTP_ATTR_PERMISSIONS, $mode & 07777); - if (!$this->_setstat($filename, $attr, $recursive)) { - return false; - } - if ($recursive) { - return true; - } - - $filename = $this->_realPath($filename); - // rather than return what the permissions *should* be, we'll return what they actually are. this will also - // tell us if the file actually exists. - // incidentally, SFTPv4+ adds an additional 32-bit integer field - flags - to the following: - $packet = pack('Na*', strlen($filename), $filename); - if (!$this->_send_sftp_packet(NET_SFTP_STAT, $packet)) { - return false; - } - - $response = $this->_get_sftp_packet(); - switch ($this->packet_type) { - case NET_SFTP_ATTRS: - $attrs = $this->_parseAttributes($response); - return $attrs['permissions']; - case NET_SFTP_STATUS: - $this->_logError($response); - return false; - } - - user_error('Expected SSH_FXP_ATTRS or SSH_FXP_STATUS'); - return false; - } - - /** - * Sets information about a file - * - * @param string $filename - * @param string $attr - * @param bool $recursive - * @return bool - * @access private - */ - function _setstat($filename, $attr, $recursive) - { - if (!($this->bitmap & NET_SSH2_MASK_LOGIN)) { - return false; - } - - $filename = $this->_realpath($filename); - if ($filename === false) { - return false; - } - - $this->_remove_from_stat_cache($filename); - - if ($recursive) { - $i = 0; - $result = $this->_setstat_recursive($filename, $attr, $i); - $this->_read_put_responses($i); - return $result; - } - - // SFTPv4+ has an additional byte field - type - that would need to be sent, as well. setting it to - // SSH_FILEXFER_TYPE_UNKNOWN might work. if not, we'd have to do an SSH_FXP_STAT before doing an SSH_FXP_SETSTAT. - if (!$this->_send_sftp_packet(NET_SFTP_SETSTAT, pack('Na*a*', strlen($filename), $filename, $attr))) { - return false; - } - - /* - "Because some systems must use separate system calls to set various attributes, it is possible that a failure - response will be returned, but yet some of the attributes may be have been successfully modified. If possible, - servers SHOULD avoid this situation; however, clients MUST be aware that this is possible." - - -- http://tools.ietf.org/html/draft-ietf-secsh-filexfer-13#section-8.6 - */ - $response = $this->_get_sftp_packet(); - if ($this->packet_type != NET_SFTP_STATUS) { - user_error('Expected SSH_FXP_STATUS'); - return false; - } - - extract(unpack('Nstatus', $this->_string_shift($response, 4))); - if ($status != NET_SFTP_STATUS_OK) { - $this->_logError($response, $status); - return false; - } - - return true; - } - - /** - * Recursively sets information on directories on the SFTP server - * - * Minimizes directory lookups and SSH_FXP_STATUS requests for speed. - * - * @param string $path - * @param string $attr - * @param int $i - * @return bool - * @access private - */ - function _setstat_recursive($path, $attr, &$i) - { - if (!$this->_read_put_responses($i)) { - return false; - } - $i = 0; - $entries = $this->_list($path, true); - - if ($entries === false) { - return $this->_setstat($path, $attr, false); - } - - // normally $entries would have at least . and .. but it might not if the directories - // permissions didn't allow reading - if (empty($entries)) { - return false; - } - - unset($entries['.'], $entries['..']); - foreach ($entries as $filename => $props) { - if (!isset($props['type'])) { - return false; - } - - $temp = $path . '/' . $filename; - if ($props['type'] == NET_SFTP_TYPE_DIRECTORY) { - if (!$this->_setstat_recursive($temp, $attr, $i)) { - return false; - } - } else { - if (!$this->_send_sftp_packet(NET_SFTP_SETSTAT, pack('Na*a*', strlen($temp), $temp, $attr))) { - return false; - } - - $i++; - - if ($i >= NET_SFTP_QUEUE_SIZE) { - if (!$this->_read_put_responses($i)) { - return false; - } - $i = 0; - } - } - } - - if (!$this->_send_sftp_packet(NET_SFTP_SETSTAT, pack('Na*a*', strlen($path), $path, $attr))) { - return false; - } - - $i++; - - if ($i >= NET_SFTP_QUEUE_SIZE) { - if (!$this->_read_put_responses($i)) { - return false; - } - $i = 0; - } - - return true; - } - - /** - * Return the target of a symbolic link - * - * @param string $link - * @return mixed - * @access public - */ - function readlink($link) - { - if (!($this->bitmap & NET_SSH2_MASK_LOGIN)) { - return false; - } - - $link = $this->_realpath($link); - - if (!$this->_send_sftp_packet(NET_SFTP_READLINK, pack('Na*', strlen($link), $link))) { - return false; - } - - $response = $this->_get_sftp_packet(); - switch ($this->packet_type) { - case NET_SFTP_NAME: - break; - case NET_SFTP_STATUS: - $this->_logError($response); - return false; - default: - user_error('Expected SSH_FXP_NAME or SSH_FXP_STATUS'); - return false; - } - - extract(unpack('Ncount', $this->_string_shift($response, 4))); - // the file isn't a symlink - if (!$count) { - return false; - } - - extract(unpack('Nlength', $this->_string_shift($response, 4))); - return $this->_string_shift($response, $length); - } - - /** - * Create a symlink - * - * symlink() creates a symbolic link to the existing target with the specified name link. - * - * @param string $target - * @param string $link - * @return bool - * @access public - */ - function symlink($target, $link) - { - if (!($this->bitmap & NET_SSH2_MASK_LOGIN)) { - return false; - } - - //$target = $this->_realpath($target); - $link = $this->_realpath($link); - - $packet = pack('Na*Na*', strlen($target), $target, strlen($link), $link); - if (!$this->_send_sftp_packet(NET_SFTP_SYMLINK, $packet)) { - return false; - } - - $response = $this->_get_sftp_packet(); - if ($this->packet_type != NET_SFTP_STATUS) { - user_error('Expected SSH_FXP_STATUS'); - return false; - } - - extract(unpack('Nstatus', $this->_string_shift($response, 4))); - if ($status != NET_SFTP_STATUS_OK) { - $this->_logError($response, $status); - return false; - } - - return true; - } - - /** - * Creates a directory. - * - * @param string $dir - * @return bool - * @access public - */ - function mkdir($dir, $mode = -1, $recursive = false) - { - if (!($this->bitmap & NET_SSH2_MASK_LOGIN)) { - return false; - } - - $dir = $this->_realpath($dir); - // by not providing any permissions, hopefully the server will use the logged in users umask - their - // default permissions. - $attr = $mode == -1 ? "\0\0\0\0" : pack('N2', NET_SFTP_ATTR_PERMISSIONS, $mode & 07777); - - if ($recursive) { - $dirs = explode('/', preg_replace('#/(?=/)|/$#', '', $dir)); - if (empty($dirs[0])) { - array_shift($dirs); - $dirs[0] = '/' . $dirs[0]; - } - for ($i = 0; $i < count($dirs); $i++) { - $temp = array_slice($dirs, 0, $i + 1); - $temp = implode('/', $temp); - $result = $this->_mkdir_helper($temp, $attr); - } - return $result; - } - - return $this->_mkdir_helper($dir, $attr); - } - - /** - * Helper function for directory creation - * - * @param string $dir - * @return bool - * @access private - */ - function _mkdir_helper($dir, $attr) - { - if (!$this->_send_sftp_packet(NET_SFTP_MKDIR, pack('Na*a*', strlen($dir), $dir, $attr))) { - return false; - } - - $response = $this->_get_sftp_packet(); - if ($this->packet_type != NET_SFTP_STATUS) { - user_error('Expected SSH_FXP_STATUS'); - return false; - } - - extract(unpack('Nstatus', $this->_string_shift($response, 4))); - if ($status != NET_SFTP_STATUS_OK) { - $this->_logError($response, $status); - return false; - } - - return true; - } - - /** - * Removes a directory. - * - * @param string $dir - * @return bool - * @access public - */ - function rmdir($dir) - { - if (!($this->bitmap & NET_SSH2_MASK_LOGIN)) { - return false; - } - - $dir = $this->_realpath($dir); - if ($dir === false) { - return false; - } - - if (!$this->_send_sftp_packet(NET_SFTP_RMDIR, pack('Na*', strlen($dir), $dir))) { - return false; - } - - $response = $this->_get_sftp_packet(); - if ($this->packet_type != NET_SFTP_STATUS) { - user_error('Expected SSH_FXP_STATUS'); - return false; - } - - extract(unpack('Nstatus', $this->_string_shift($response, 4))); - if ($status != NET_SFTP_STATUS_OK) { - // presumably SSH_FX_NO_SUCH_FILE or SSH_FX_PERMISSION_DENIED? - $this->_logError($response, $status); - return false; - } - - $this->_remove_from_stat_cache($dir); - // the following will do a soft delete, which would be useful if you deleted a file - // and then tried to do a stat on the deleted file. the above, in contrast, does - // a hard delete - //$this->_update_stat_cache($dir, false); - - return true; - } - - /** - * Uploads a file to the SFTP server. - * - * By default, Net_SFTP::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_SFTP::get(), you will get a file, twelve bytes - * long, containing 'filename.ext' as its contents. - * - * Setting $mode to NET_SFTP_LOCAL_FILE will change the above behavior. With NET_SFTP_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. - * - * If $data is a resource then it'll be used as a resource instead. - * - * - * Setting $mode to NET_SFTP_CALLBACK will use $data as callback function, which gets only one parameter -- number - * of bytes to return, and returns a string if there is some data or null if there is no more data - * - * 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. - * - * $mode can take an additional two parameters - NET_SFTP_RESUME and NET_SFTP_RESUME_START. These are bitwise AND'd with - * $mode. So if you want to resume upload of a 300mb file on the local file system you'd set $mode to the following: - * - * NET_SFTP_LOCAL_FILE | NET_SFTP_RESUME - * - * If you wanted to simply append the full contents of a local file to the full contents of a remote file you'd replace - * NET_SFTP_RESUME with NET_SFTP_RESUME_START. - * - * If $mode & (NET_SFTP_RESUME | NET_SFTP_RESUME_START) then NET_SFTP_RESUME_START will be assumed. - * - * $start and $local_start give you more fine grained control over this process and take precident over NET_SFTP_RESUME - * when they're non-negative. ie. $start could let you write at the end of a file (like NET_SFTP_RESUME) or in the middle - * of one. $local_start could let you start your reading from the end of a file (like NET_SFTP_RESUME_START) or in the - * middle of one. - * - * Setting $local_start to > 0 or $mode | NET_SFTP_RESUME_START doesn't do anything unless $mode | NET_SFTP_LOCAL_FILE. - * - * @param string $remote_file - * @param string|resource $data - * @param int $mode - * @param int $start - * @param int $local_start - * @param callable|null $progressCallback - * @return bool - * @access public - * @internal ASCII mode for SFTPv4/5/6 can be supported by adding a new function - Net_SFTP::setMode(). - */ - function put($remote_file, $data, $mode = NET_SFTP_STRING, $start = -1, $local_start = -1, $progressCallback = null) - { - if (!($this->bitmap & NET_SSH2_MASK_LOGIN)) { - return false; - } - - $remote_file = $this->_realpath($remote_file); - if ($remote_file === false) { - return false; - } - - $this->_remove_from_stat_cache($remote_file); - - $flags = NET_SFTP_OPEN_WRITE | NET_SFTP_OPEN_CREATE; - // according to the SFTP specs, NET_SFTP_OPEN_APPEND should "force all writes to append data at the end of the file." - // in practice, it doesn't seem to do that. - //$flags|= ($mode & NET_SFTP_RESUME) ? NET_SFTP_OPEN_APPEND : NET_SFTP_OPEN_TRUNCATE; - - if ($start >= 0) { - $offset = $start; - } elseif ($mode & NET_SFTP_RESUME) { - // if NET_SFTP_OPEN_APPEND worked as it should _size() wouldn't need to be called - $size = $this->size($remote_file); - $offset = $size !== false ? $size : 0; - } else { - $offset = 0; - $flags|= NET_SFTP_OPEN_TRUNCATE; - } - - $packet = pack('Na*N2', strlen($remote_file), $remote_file, $flags, 0); - if (!$this->_send_sftp_packet(NET_SFTP_OPEN, $packet)) { - return false; - } - - $response = $this->_get_sftp_packet(); - switch ($this->packet_type) { - case NET_SFTP_HANDLE: - $handle = substr($response, 4); - break; - case NET_SFTP_STATUS: - $this->_logError($response); - return false; - default: - user_error('Expected SSH_FXP_HANDLE or SSH_FXP_STATUS'); - return false; - } - - // http://tools.ietf.org/html/draft-ietf-secsh-filexfer-13#section-8.2.3 - $dataCallback = false; - switch (true) { - case $mode & NET_SFTP_CALLBACK: - if (!is_callable($data)) { - user_error("\$data should be is_callable if you set NET_SFTP_CALLBACK flag"); - } - $dataCallback = $data; - // do nothing - break; - case is_resource($data): - $mode = $mode & ~NET_SFTP_LOCAL_FILE; - $fp = $data; - break; - case $mode & NET_SFTP_LOCAL_FILE: - if (!is_file($data)) { - user_error("$data is not a valid file"); - return false; - } - $fp = @fopen($data, 'rb'); - if (!$fp) { - return false; - } - } - - if (isset($fp)) { - $stat = fstat($fp); - $size = $stat['size']; - - if ($local_start >= 0) { - fseek($fp, $local_start); - $size-= $local_start; - } - } elseif ($dataCallback) { - $size = 0; - } else { - $size = strlen($data); - } - - $sent = 0; - $size = $size < 0 ? ($size & 0x7FFFFFFF) + 0x80000000 : $size; - - $sftp_packet_size = 4096; // PuTTY uses 4096 - // make the SFTP packet be exactly 4096 bytes by including the bytes in the NET_SFTP_WRITE packets "header" - $sftp_packet_size-= strlen($handle) + 25; - $i = 0; - while ($dataCallback || ($size === 0 || $sent < $size)) { - if ($dataCallback) { - $temp = call_user_func($dataCallback, $sftp_packet_size); - if (is_null($temp)) { - break; - } - } else { - $temp = isset($fp) ? fread($fp, $sftp_packet_size) : substr($data, $sent, $sftp_packet_size); - if ($temp === false || $temp === '') { - break; - } - } - - $subtemp = $offset + $sent; - $packet = pack('Na*N3a*', strlen($handle), $handle, $subtemp / 4294967296, $subtemp, strlen($temp), $temp); - if (!$this->_send_sftp_packet(NET_SFTP_WRITE, $packet)) { - if ($mode & NET_SFTP_LOCAL_FILE) { - fclose($fp); - } - return false; - } - $sent+= strlen($temp); - if (is_callable($progressCallback)) { - call_user_func($progressCallback, $sent); - } - - $i++; - - if ($i == NET_SFTP_QUEUE_SIZE) { - if (!$this->_read_put_responses($i)) { - $i = 0; - break; - } - $i = 0; - } - } - - if (!$this->_read_put_responses($i)) { - if ($mode & NET_SFTP_LOCAL_FILE) { - fclose($fp); - } - $this->_close_handle($handle); - return false; - } - - if ($mode & NET_SFTP_LOCAL_FILE) { - fclose($fp); - } - - return $this->_close_handle($handle); - } - - /** - * Reads multiple successive SSH_FXP_WRITE responses - * - * Sending an SSH_FXP_WRITE packet and immediately reading its response isn't as efficient as blindly sending out $i - * SSH_FXP_WRITEs, in succession, and then reading $i responses. - * - * @param int $i - * @return bool - * @access private - */ - function _read_put_responses($i) - { - while ($i--) { - $response = $this->_get_sftp_packet(); - if ($this->packet_type != NET_SFTP_STATUS) { - user_error('Expected SSH_FXP_STATUS'); - return false; - } - - extract(unpack('Nstatus', $this->_string_shift($response, 4))); - if ($status != NET_SFTP_STATUS_OK) { - $this->_logError($response, $status); - break; - } - } - - return $i < 0; - } - - /** - * Close handle - * - * @param string $handle - * @return bool - * @access private - */ - function _close_handle($handle) - { - if (!$this->_send_sftp_packet(NET_SFTP_CLOSE, pack('Na*', strlen($handle), $handle))) { - return false; - } - - // "The client MUST release all resources associated with the handle regardless of the status." - // -- http://tools.ietf.org/html/draft-ietf-secsh-filexfer-13#section-8.1.3 - $response = $this->_get_sftp_packet(); - if ($this->packet_type != NET_SFTP_STATUS) { - user_error('Expected SSH_FXP_STATUS'); - return false; - } - - extract(unpack('Nstatus', $this->_string_shift($response, 4))); - if ($status != NET_SFTP_STATUS_OK) { - $this->_logError($response, $status); - return false; - } - - return true; - } - - /** - * Downloads a file from the SFTP 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. - * - * $offset and $length can be used to download files in chunks. - * - * @param string $remote_file - * @param string $local_file - * @param int $offset - * @param int $length - * @return mixed - * @access public - */ - function get($remote_file, $local_file = false, $offset = 0, $length = -1) - { - if (!($this->bitmap & NET_SSH2_MASK_LOGIN)) { - return false; - } - - $remote_file = $this->_realpath($remote_file); - if ($remote_file === false) { - return false; - } - - $packet = pack('Na*N2', strlen($remote_file), $remote_file, NET_SFTP_OPEN_READ, 0); - if (!$this->_send_sftp_packet(NET_SFTP_OPEN, $packet)) { - return false; - } - - $response = $this->_get_sftp_packet(); - switch ($this->packet_type) { - case NET_SFTP_HANDLE: - $handle = substr($response, 4); - break; - case NET_SFTP_STATUS: // presumably SSH_FX_NO_SUCH_FILE or SSH_FX_PERMISSION_DENIED - $this->_logError($response); - return false; - default: - user_error('Expected SSH_FXP_HANDLE or SSH_FXP_STATUS'); - return false; - } - - if (is_resource($local_file)) { - $fp = $local_file; - $stat = fstat($fp); - $res_offset = $stat['size']; - } else { - $res_offset = 0; - if ($local_file !== false) { - $fp = fopen($local_file, 'wb'); - if (!$fp) { - return false; - } - } else { - $content = ''; - } - } - - $fclose_check = $local_file !== false && !is_resource($local_file); - - $start = $offset; - $read = 0; - while (true) { - $i = 0; - - while ($i < NET_SFTP_QUEUE_SIZE && ($length < 0 || $read < $length)) { - $tempoffset = $start + $read; - - $packet_size = $length > 0 ? min($this->max_sftp_packet, $length - $read) : $this->max_sftp_packet; - - $packet = pack('Na*N3', strlen($handle), $handle, $tempoffset / 4294967296, $tempoffset, $packet_size); - if (!$this->_send_sftp_packet(NET_SFTP_READ, $packet)) { - if ($fclose_check) { - fclose($fp); - } - return false; - } - $packet = null; - $read+= $packet_size; - $i++; - } - - if (!$i) { - break; - } - - $clear_responses = false; - while ($i > 0) { - $i--; - - if ($clear_responses) { - $this->_get_sftp_packet(); - continue; - } else { - $response = $this->_get_sftp_packet(); - } - - switch ($this->packet_type) { - case NET_SFTP_DATA: - $temp = substr($response, 4); - $offset+= strlen($temp); - if ($local_file === false) { - $content.= $temp; - } else { - fputs($fp, $temp); - } - $temp = null; - break; - case NET_SFTP_STATUS: - // could, in theory, return false if !strlen($content) but we'll hold off for the time being - $this->_logError($response); - $clear_responses = true; // don't break out of the loop yet, so we can read the remaining responses - break; - default: - if ($fclose_check) { - fclose($fp); - } - user_error('Expected SSH_FX_DATA or SSH_FXP_STATUS'); - } - $response = null; - } - - if ($clear_responses) { - break; - } - } - - if ($length > 0 && $length <= $offset - $start) { - if ($local_file === false) { - $content = substr($content, 0, $length); - } else { - ftruncate($fp, $length + $res_offset); - } - } - - if ($fclose_check) { - fclose($fp); - } - - if (!$this->_close_handle($handle)) { - return false; - } - - // if $content isn't set that means a file was written to - return isset($content) ? $content : true; - } - - /** - * Deletes a file on the SFTP server. - * - * @param string $path - * @param bool $recursive - * @return bool - * @access public - */ - function delete($path, $recursive = true) - { - if (!($this->bitmap & NET_SSH2_MASK_LOGIN)) { - return false; - } - - $path = $this->_realpath($path); - if ($path === false) { - return false; - } - - // http://tools.ietf.org/html/draft-ietf-secsh-filexfer-13#section-8.3 - if (!$this->_send_sftp_packet(NET_SFTP_REMOVE, pack('Na*', strlen($path), $path))) { - return false; - } - - $response = $this->_get_sftp_packet(); - if ($this->packet_type != NET_SFTP_STATUS) { - user_error('Expected SSH_FXP_STATUS'); - return false; - } - - // if $status isn't SSH_FX_OK it's probably SSH_FX_NO_SUCH_FILE or SSH_FX_PERMISSION_DENIED - extract(unpack('Nstatus', $this->_string_shift($response, 4))); - if ($status != NET_SFTP_STATUS_OK) { - $this->_logError($response, $status); - if (!$recursive) { - return false; - } - $i = 0; - $result = $this->_delete_recursive($path, $i); - $this->_read_put_responses($i); - return $result; - } - - $this->_remove_from_stat_cache($path); - - return true; - } - - /** - * Recursively deletes directories on the SFTP server - * - * Minimizes directory lookups and SSH_FXP_STATUS requests for speed. - * - * @param string $path - * @param int $i - * @return bool - * @access private - */ - function _delete_recursive($path, &$i) - { - if (!$this->_read_put_responses($i)) { - return false; - } - $i = 0; - $entries = $this->_list($path, true); - - // normally $entries would have at least . and .. but it might not if the directories - // permissions didn't allow reading - if (empty($entries)) { - return false; - } - - unset($entries['.'], $entries['..']); - foreach ($entries as $filename => $props) { - if (!isset($props['type'])) { - return false; - } - - $temp = $path . '/' . $filename; - if ($props['type'] == NET_SFTP_TYPE_DIRECTORY) { - if (!$this->_delete_recursive($temp, $i)) { - return false; - } - } else { - if (!$this->_send_sftp_packet(NET_SFTP_REMOVE, pack('Na*', strlen($temp), $temp))) { - return false; - } - $this->_remove_from_stat_cache($temp); - - $i++; - - if ($i >= NET_SFTP_QUEUE_SIZE) { - if (!$this->_read_put_responses($i)) { - return false; - } - $i = 0; - } - } - } - - if (!$this->_send_sftp_packet(NET_SFTP_RMDIR, pack('Na*', strlen($path), $path))) { - return false; - } - $this->_remove_from_stat_cache($path); - - $i++; - - if ($i >= NET_SFTP_QUEUE_SIZE) { - if (!$this->_read_put_responses($i)) { - return false; - } - $i = 0; - } - - return true; - } - - /** - * Checks whether a file or directory exists - * - * @param string $path - * @return bool - * @access public - */ - function file_exists($path) - { - if ($this->use_stat_cache) { - $path = $this->_realpath($path); - - $result = $this->_query_stat_cache($path); - - if (isset($result)) { - // return true if $result is an array or if it's an stdClass object - return $result !== false; - } - } - - return $this->stat($path) !== false; - } - - /** - * Tells whether the filename is a directory - * - * @param string $path - * @return bool - * @access public - */ - function is_dir($path) - { - $result = $this->_get_stat_cache_prop($path, 'type'); - if ($result === false) { - return false; - } - return $result === NET_SFTP_TYPE_DIRECTORY; - } - - /** - * Tells whether the filename is a regular file - * - * @param string $path - * @return bool - * @access public - */ - function is_file($path) - { - $result = $this->_get_stat_cache_prop($path, 'type'); - if ($result === false) { - return false; - } - return $result === NET_SFTP_TYPE_REGULAR; - } - - /** - * Tells whether the filename is a symbolic link - * - * @param string $path - * @return bool - * @access public - */ - function is_link($path) - { - $result = $this->_get_lstat_cache_prop($path, 'type'); - if ($result === false) { - return false; - } - return $result === NET_SFTP_TYPE_SYMLINK; - } - - /** - * Tells whether a file exists and is readable - * - * @param string $path - * @return bool - * @access public - */ - function is_readable($path) - { - $path = $this->_realpath($path); - - $packet = pack('Na*N2', strlen($path), $path, NET_SFTP_OPEN_READ, 0); - if (!$this->_send_sftp_packet(NET_SFTP_OPEN, $packet)) { - return false; - } - - $response = $this->_get_sftp_packet(); - switch ($this->packet_type) { - case NET_SFTP_HANDLE: - return true; - case NET_SFTP_STATUS: // presumably SSH_FX_NO_SUCH_FILE or SSH_FX_PERMISSION_DENIED - return false; - default: - user_error('Expected SSH_FXP_HANDLE or SSH_FXP_STATUS'); - return false; - } - } - - /** - * Tells whether the filename is writable - * - * @param string $path - * @return bool - * @access public - */ - function is_writable($path) - { - $path = $this->_realpath($path); - - $packet = pack('Na*N2', strlen($path), $path, NET_SFTP_OPEN_WRITE, 0); - if (!$this->_send_sftp_packet(NET_SFTP_OPEN, $packet)) { - return false; - } - - $response = $this->_get_sftp_packet(); - switch ($this->packet_type) { - case NET_SFTP_HANDLE: - return true; - case NET_SFTP_STATUS: // presumably SSH_FX_NO_SUCH_FILE or SSH_FX_PERMISSION_DENIED - return false; - default: - user_error('Expected SSH_FXP_HANDLE or SSH_FXP_STATUS'); - return false; - } - } - - /** - * Tells whether the filename is writeable - * - * Alias of is_writable - * - * @param string $path - * @return bool - * @access public - */ - function is_writeable($path) - { - return $this->is_writable($path); - } - - /** - * Gets last access time of file - * - * @param string $path - * @return mixed - * @access public - */ - function fileatime($path) - { - return $this->_get_stat_cache_prop($path, 'atime'); - } - - /** - * Gets file modification time - * - * @param string $path - * @return mixed - * @access public - */ - function filemtime($path) - { - return $this->_get_stat_cache_prop($path, 'mtime'); - } - - /** - * Gets file permissions - * - * @param string $path - * @return mixed - * @access public - */ - function fileperms($path) - { - return $this->_get_stat_cache_prop($path, 'permissions'); - } - - /** - * Gets file owner - * - * @param string $path - * @return mixed - * @access public - */ - function fileowner($path) - { - return $this->_get_stat_cache_prop($path, 'uid'); - } - - /** - * Gets file group - * - * @param string $path - * @return mixed - * @access public - */ - function filegroup($path) - { - return $this->_get_stat_cache_prop($path, 'gid'); - } - - /** - * Gets file size - * - * @param string $path - * @return mixed - * @access public - */ - function filesize($path) - { - return $this->_get_stat_cache_prop($path, 'size'); - } - - /** - * Gets file type - * - * @param string $path - * @return mixed - * @access public - */ - function filetype($path) - { - $type = $this->_get_stat_cache_prop($path, 'type'); - if ($type === false) { - return false; - } - - switch ($type) { - case NET_SFTP_TYPE_BLOCK_DEVICE: - return 'block'; - case NET_SFTP_TYPE_CHAR_DEVICE: - return 'char'; - case NET_SFTP_TYPE_DIRECTORY: - return 'dir'; - case NET_SFTP_TYPE_FIFO: - return 'fifo'; - case NET_SFTP_TYPE_REGULAR: - return 'file'; - case NET_SFTP_TYPE_SYMLINK: - return 'link'; - default: - return false; - } - } - - /** - * Return a stat properity - * - * Uses cache if appropriate. - * - * @param string $path - * @param string $prop - * @return mixed - * @access private - */ - function _get_stat_cache_prop($path, $prop) - { - return $this->_get_xstat_cache_prop($path, $prop, 'stat'); - } - - /** - * Return an lstat properity - * - * Uses cache if appropriate. - * - * @param string $path - * @param string $prop - * @return mixed - * @access private - */ - function _get_lstat_cache_prop($path, $prop) - { - return $this->_get_xstat_cache_prop($path, $prop, 'lstat'); - } - - /** - * Return a stat or lstat properity - * - * Uses cache if appropriate. - * - * @param string $path - * @param string $prop - * @return mixed - * @access private - */ - function _get_xstat_cache_prop($path, $prop, $type) - { - if ($this->use_stat_cache) { - $path = $this->_realpath($path); - - $result = $this->_query_stat_cache($path); - - if (is_object($result) && isset($result->$type)) { - return $result->{$type}[$prop]; - } - } - - $result = $this->$type($path); - - if ($result === false || !isset($result[$prop])) { - return false; - } - - return $result[$prop]; - } - - /** - * Renames a file or a directory on the SFTP server - * - * @param string $oldname - * @param string $newname - * @return bool - * @access public - */ - function rename($oldname, $newname) - { - if (!($this->bitmap & NET_SSH2_MASK_LOGIN)) { - return false; - } - - $oldname = $this->_realpath($oldname); - $newname = $this->_realpath($newname); - if ($oldname === false || $newname === false) { - return false; - } - - // http://tools.ietf.org/html/draft-ietf-secsh-filexfer-13#section-8.3 - $packet = pack('Na*Na*', strlen($oldname), $oldname, strlen($newname), $newname); - if (!$this->_send_sftp_packet(NET_SFTP_RENAME, $packet)) { - return false; - } - - $response = $this->_get_sftp_packet(); - if ($this->packet_type != NET_SFTP_STATUS) { - user_error('Expected SSH_FXP_STATUS'); - return false; - } - - // if $status isn't SSH_FX_OK it's probably SSH_FX_NO_SUCH_FILE or SSH_FX_PERMISSION_DENIED - extract(unpack('Nstatus', $this->_string_shift($response, 4))); - if ($status != NET_SFTP_STATUS_OK) { - $this->_logError($response, $status); - return false; - } - - // don't move the stat cache entry over since this operation could very well change the - // atime and mtime attributes - //$this->_update_stat_cache($newname, $this->_query_stat_cache($oldname)); - $this->_remove_from_stat_cache($oldname); - $this->_remove_from_stat_cache($newname); - - return true; - } - - /** - * Parse Attributes - * - * See '7. File Attributes' of draft-ietf-secsh-filexfer-13 for more info. - * - * @param string $response - * @return array - * @access private - */ - function _parseAttributes(&$response) - { - $attr = array(); - extract(unpack('Nflags', $this->_string_shift($response, 4))); - // SFTPv4+ have a type field (a byte) that follows the above flag field - foreach ($this->attributes as $key => $value) { - switch ($flags & $key) { - case NET_SFTP_ATTR_SIZE: // 0x00000001 - // The size attribute is defined as an unsigned 64-bit integer. - // The following will use floats on 32-bit platforms, if necessary. - // As can be seen in the BigInteger class, floats are generally - // IEEE 754 binary64 "double precision" on such platforms and - // as such can represent integers of at least 2^50 without loss - // of precision. Interpreted in filesize, 2^50 bytes = 1024 TiB. - $attr['size'] = hexdec(bin2hex($this->_string_shift($response, 8))); - break; - case NET_SFTP_ATTR_UIDGID: // 0x00000002 (SFTPv3 only) - $attr+= unpack('Nuid/Ngid', $this->_string_shift($response, 8)); - break; - case NET_SFTP_ATTR_PERMISSIONS: // 0x00000004 - $attr+= unpack('Npermissions', $this->_string_shift($response, 4)); - // mode == permissions; permissions was the original array key and is retained for bc purposes. - // mode was added because that's the more industry standard terminology - $attr+= array('mode' => $attr['permissions']); - $fileType = $this->_parseMode($attr['permissions']); - if ($fileType !== false) { - $attr+= array('type' => $fileType); - } - break; - case NET_SFTP_ATTR_ACCESSTIME: // 0x00000008 - $attr+= unpack('Natime/Nmtime', $this->_string_shift($response, 8)); - break; - case NET_SFTP_ATTR_EXTENDED: // 0x80000000 - extract(unpack('Ncount', $this->_string_shift($response, 4))); - for ($i = 0; $i < $count; $i++) { - extract(unpack('Nlength', $this->_string_shift($response, 4))); - $key = $this->_string_shift($response, $length); - extract(unpack('Nlength', $this->_string_shift($response, 4))); - $attr[$key] = $this->_string_shift($response, $length); - } - } - } - return $attr; - } - - /** - * Attempt to identify the file type - * - * Quoting the SFTP RFC, "Implementations MUST NOT send bits that are not defined" but they seem to anyway - * - * @param int $mode - * @return int - * @access private - */ - function _parseMode($mode) - { - // values come from http://lxr.free-electrons.com/source/include/uapi/linux/stat.h#L12 - // see, also, http://linux.die.net/man/2/stat - switch ($mode & 0170000) {// ie. 1111 0000 0000 0000 - case 0000000: // no file type specified - figure out the file type using alternative means - return false; - case 0040000: - return NET_SFTP_TYPE_DIRECTORY; - case 0100000: - return NET_SFTP_TYPE_REGULAR; - case 0120000: - return NET_SFTP_TYPE_SYMLINK; - // new types introduced in SFTPv5+ - // http://tools.ietf.org/html/draft-ietf-secsh-filexfer-05#section-5.2 - case 0010000: // named pipe (fifo) - return NET_SFTP_TYPE_FIFO; - case 0020000: // character special - return NET_SFTP_TYPE_CHAR_DEVICE; - case 0060000: // block special - return NET_SFTP_TYPE_BLOCK_DEVICE; - case 0140000: // socket - return NET_SFTP_TYPE_SOCKET; - case 0160000: // whiteout - // "SPECIAL should be used for files that are of - // a known type which cannot be expressed in the protocol" - return NET_SFTP_TYPE_SPECIAL; - default: - return NET_SFTP_TYPE_UNKNOWN; - } - } - - /** - * Parse Longname - * - * SFTPv3 doesn't provide any easy way of identifying a file type. You could try to open - * a file as a directory and see if an error is returned or you could try to parse the - * SFTPv3-specific longname field of the SSH_FXP_NAME packet. That's what this function does. - * The result is returned using the - * {@link http://tools.ietf.org/html/draft-ietf-secsh-filexfer-04#section-5.2 SFTPv4 type constants}. - * - * If the longname is in an unrecognized format bool(false) is returned. - * - * @param string $longname - * @return mixed - * @access private - */ - function _parseLongname($longname) - { - // http://en.wikipedia.org/wiki/Unix_file_types - // http://en.wikipedia.org/wiki/Filesystem_permissions#Notation_of_traditional_Unix_permissions - if (preg_match('#^[^/]([r-][w-][xstST-]){3}#', $longname)) { - switch ($longname[0]) { - case '-': - return NET_SFTP_TYPE_REGULAR; - case 'd': - return NET_SFTP_TYPE_DIRECTORY; - case 'l': - return NET_SFTP_TYPE_SYMLINK; - default: - return NET_SFTP_TYPE_SPECIAL; - } - } - - return false; - } - - /** - * Sends SFTP Packets - * - * See '6. General Packet Format' of draft-ietf-secsh-filexfer-13 for more info. - * - * @param int $type - * @param string $data - * @see self::_get_sftp_packet() - * @see Net_SSH2::_send_channel_packet() - * @return bool - * @access private - */ - function _send_sftp_packet($type, $data) - { - $packet = $this->request_id !== false ? - pack('NCNa*', strlen($data) + 5, $type, $this->request_id, $data) : - pack('NCa*', strlen($data) + 1, $type, $data); - - $start = strtok(microtime(), ' ') + strtok(''); // http://php.net/microtime#61838 - $result = $this->_send_channel_packet(NET_SFTP_CHANNEL, $packet); - $stop = strtok(microtime(), ' ') + strtok(''); - - if (defined('NET_SFTP_LOGGING')) { - $packet_type = '-> ' . $this->packet_types[$type] . - ' (' . round($stop - $start, 4) . 's)'; - if (NET_SFTP_LOGGING == NET_SFTP_LOG_REALTIME) { - echo "<pre>\r\n" . $this->_format_log(array($data), array($packet_type)) . "\r\n</pre>\r\n"; - flush(); - ob_flush(); - } else { - $this->packet_type_log[] = $packet_type; - if (NET_SFTP_LOGGING == NET_SFTP_LOG_COMPLEX) { - $this->packet_log[] = $data; - } - } - } - - return $result; - } - - /** - * Receives SFTP Packets - * - * See '6. General Packet Format' of draft-ietf-secsh-filexfer-13 for more info. - * - * Incidentally, the number of SSH_MSG_CHANNEL_DATA messages has no bearing on the number of SFTP packets present. - * There can be one SSH_MSG_CHANNEL_DATA messages containing two SFTP packets or there can be two SSH_MSG_CHANNEL_DATA - * messages containing one SFTP packet. - * - * @see self::_send_sftp_packet() - * @return string - * @access private - */ - function _get_sftp_packet() - { - $this->curTimeout = false; - - $start = strtok(microtime(), ' ') + strtok(''); // http://php.net/microtime#61838 - - // SFTP packet length - while (strlen($this->packet_buffer) < 4) { - $temp = $this->_get_channel_packet(NET_SFTP_CHANNEL); - if (is_bool($temp)) { - $this->packet_type = false; - $this->packet_buffer = ''; - return false; - } - $this->packet_buffer.= $temp; - } - extract(unpack('Nlength', $this->_string_shift($this->packet_buffer, 4))); - $tempLength = $length; - $tempLength-= strlen($this->packet_buffer); - - // SFTP packet type and data payload - while ($tempLength > 0) { - $temp = $this->_get_channel_packet(NET_SFTP_CHANNEL); - if (is_bool($temp)) { - $this->packet_type = false; - $this->packet_buffer = ''; - return false; - } - $this->packet_buffer.= $temp; - $tempLength-= strlen($temp); - } - - $stop = strtok(microtime(), ' ') + strtok(''); - - $this->packet_type = ord($this->_string_shift($this->packet_buffer)); - - if ($this->request_id !== false) { - $this->_string_shift($this->packet_buffer, 4); // remove the request id - $length-= 5; // account for the request id and the packet type - } else { - $length-= 1; // account for the packet type - } - - $packet = $this->_string_shift($this->packet_buffer, $length); - - if (defined('NET_SFTP_LOGGING')) { - $packet_type = '<- ' . $this->packet_types[$this->packet_type] . - ' (' . round($stop - $start, 4) . 's)'; - if (NET_SFTP_LOGGING == NET_SFTP_LOG_REALTIME) { - echo "<pre>\r\n" . $this->_format_log(array($packet), array($packet_type)) . "\r\n</pre>\r\n"; - flush(); - ob_flush(); - } else { - $this->packet_type_log[] = $packet_type; - if (NET_SFTP_LOGGING == NET_SFTP_LOG_COMPLEX) { - $this->packet_log[] = $packet; - } - } - } - - return $packet; - } - - /** - * Returns a log of the packets that have been sent and received. - * - * Returns a string if NET_SFTP_LOGGING == NET_SFTP_LOG_COMPLEX, an array if NET_SFTP_LOGGING == NET_SFTP_LOG_SIMPLE and false if !defined('NET_SFTP_LOGGING') - * - * @access public - * @return string or Array - */ - function getSFTPLog() - { - if (!defined('NET_SFTP_LOGGING')) { - return false; - } - - switch (NET_SFTP_LOGGING) { - case NET_SFTP_LOG_COMPLEX: - return $this->_format_log($this->packet_log, $this->packet_type_log); - break; - //case NET_SFTP_LOG_SIMPLE: - default: - return $this->packet_type_log; - } - } - - /** - * Returns all errors - * - * @return string - * @access public - */ - function getSFTPErrors() - { - return $this->sftp_errors; - } - - /** - * Returns the last error - * - * @return string - * @access public - */ - function getLastSFTPError() - { - return count($this->sftp_errors) ? $this->sftp_errors[count($this->sftp_errors) - 1] : ''; - } - - /** - * Get supported SFTP versions - * - * @return array - * @access public - */ - function getSupportedVersions() - { - $temp = array('version' => $this->version); - if (isset($this->extensions['versions'])) { - $temp['extensions'] = $this->extensions['versions']; - } - return $temp; - } - - /** - * Disconnect - * - * @param int $reason - * @return bool - * @access private - */ - function _disconnect($reason) - { - $this->pwd = false; - parent::_disconnect($reason); - } -} diff --git a/libs/phpseclib-1.0.4/phpseclib/Net/SFTP/Stream.php b/libs/phpseclib-1.0.4/phpseclib/Net/SFTP/Stream.php deleted file mode 100644 index a944d7f..0000000 --- a/libs/phpseclib-1.0.4/phpseclib/Net/SFTP/Stream.php +++ /dev/null @@ -1,815 +0,0 @@ -<?php - -/** - * SFTP Stream Wrapper - * - * Creates an sftp:// protocol handler that can be used with, for example, fopen(), dir(), etc. - * - * PHP version 5 - * - * 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_SFTP_Stream - * @author Jim Wigginton <terrafrost@php.net> - * @copyright 2013 Jim Wigginton - * @license http://www.opensource.org/licenses/mit-license.html MIT License - * @link http://phpseclib.sourceforge.net - */ - -/** - * SFTP Stream Wrapper - * - * @package Net_SFTP_Stream - * @author Jim Wigginton <terrafrost@php.net> - * @access public - */ -class Net_SFTP_Stream -{ - /** - * SFTP instances - * - * Rather than re-create the connection we re-use instances if possible - * - * @var array - */ - static $instances; - - /** - * SFTP instance - * - * @var object - * @access private - */ - var $sftp; - - /** - * Path - * - * @var string - * @access private - */ - var $path; - - /** - * Mode - * - * @var string - * @access private - */ - var $mode; - - /** - * Position - * - * @var int - * @access private - */ - var $pos; - - /** - * Size - * - * @var int - * @access private - */ - var $size; - - /** - * Directory entries - * - * @var array - * @access private - */ - var $entries; - - /** - * EOF flag - * - * @var bool - * @access private - */ - var $eof; - - /** - * Context resource - * - * Technically this needs to be publically accessible so PHP can set it directly - * - * @var resource - * @access public - */ - var $context; - - /** - * Notification callback function - * - * @var callable - * @access public - */ - var $notification; - - /** - * Registers this class as a URL wrapper. - * - * @param string $protocol The wrapper name to be registered. - * @return bool True on success, false otherwise. - * @access public - */ - static function register($protocol = 'sftp') - { - if (in_array($protocol, stream_get_wrappers(), true)) { - return false; - } - $class = function_exists('get_called_class') ? get_called_class() : __CLASS__; - return stream_wrapper_register($protocol, $class); - } - - /** - * The Constructor - * - * @access public - */ - function __construct() - { - if (defined('NET_SFTP_STREAM_LOGGING')) { - echo "__construct()\r\n"; - } - - if (!class_exists('Net_SFTP')) { - include_once 'Net/SFTP.php'; - } - } - - /** - * Path Parser - * - * Extract a path from a URI and actually connect to an SSH server if appropriate - * - * If "notification" is set as a context parameter the message code for successful login is - * NET_SSH2_MSG_USERAUTH_SUCCESS. For a failed login it's NET_SSH2_MSG_USERAUTH_FAILURE. - * - * @param string $path - * @return string - * @access private - */ - function _parse_path($path) - { - $orig = $path; - extract(parse_url($path) + array('port' => 22)); - if (isset($query)) { - $path.= '?' . $query; - } elseif (preg_match('/(\?|\?#)$/', $orig)) { - $path.= '?'; - } - if (isset($fragment)) { - $path.= '#' . $fragment; - } elseif ($orig[strlen($orig) - 1] == '#') { - $path.= '#'; - } - - if (!isset($host)) { - return false; - } - - if (isset($this->context)) { - $context = stream_context_get_params($this->context); - if (isset($context['notification'])) { - $this->notification = $context['notification']; - } - } - - if ($host[0] == '$') { - $host = substr($host, 1); - global $$host; - if (!is_object($$host) || get_class($$host) != 'Net_SFTP') { - return false; - } - $this->sftp = $$host; - } else { - if (isset($this->context)) { - $context = stream_context_get_options($this->context); - } - if (isset($context[$scheme]['session'])) { - $sftp = $context[$scheme]['session']; - } - if (isset($context[$scheme]['sftp'])) { - $sftp = $context[$scheme]['sftp']; - } - if (isset($sftp) && is_object($sftp) && get_class($sftp) == 'Net_SFTP') { - $this->sftp = $sftp; - return $path; - } - if (isset($context[$scheme]['username'])) { - $user = $context[$scheme]['username']; - } - if (isset($context[$scheme]['password'])) { - $pass = $context[$scheme]['password']; - } - if (isset($context[$scheme]['privkey']) && is_object($context[$scheme]['privkey']) && get_Class($context[$scheme]['privkey']) == 'Crypt_RSA') { - $pass = $context[$scheme]['privkey']; - } - - if (!isset($user) || !isset($pass)) { - return false; - } - - // casting $pass to a string is necessary in the event that it's a Crypt_RSA object - if (isset(self::$instances[$host][$port][$user][(string) $pass])) { - $this->sftp = self::$instances[$host][$port][$user][(string) $pass]; - } else { - $this->sftp = new Net_SFTP($host, $port); - $this->sftp->disableStatCache(); - if (isset($this->notification) && is_callable($this->notification)) { - /* if !is_callable($this->notification) we could do this: - - user_error('fopen(): failed to call user notifier', E_USER_WARNING); - - the ftp wrapper gives errors like that when the notifier isn't callable. - i've opted not to do that, however, since the ftp wrapper gives the line - on which the fopen occurred as the line number - not the line that the - user_error is on. - */ - call_user_func($this->notification, STREAM_NOTIFY_CONNECT, STREAM_NOTIFY_SEVERITY_INFO, '', 0, 0, 0); - call_user_func($this->notification, STREAM_NOTIFY_AUTH_REQUIRED, STREAM_NOTIFY_SEVERITY_INFO, '', 0, 0, 0); - if (!$this->sftp->login($user, $pass)) { - call_user_func($this->notification, STREAM_NOTIFY_AUTH_RESULT, STREAM_NOTIFY_SEVERITY_ERR, 'Login Failure', NET_SSH2_MSG_USERAUTH_FAILURE, 0, 0); - return false; - } - call_user_func($this->notification, STREAM_NOTIFY_AUTH_RESULT, STREAM_NOTIFY_SEVERITY_INFO, 'Login Success', NET_SSH2_MSG_USERAUTH_SUCCESS, 0, 0); - } else { - if (!$this->sftp->login($user, $pass)) { - return false; - } - } - self::$instances[$host][$port][$user][(string) $pass] = $this->sftp; - } - } - - return $path; - } - - /** - * Opens file or URL - * - * @param string $path - * @param string $mode - * @param int $options - * @param string $opened_path - * @return bool - * @access public - */ - function _stream_open($path, $mode, $options, &$opened_path) - { - $path = $this->_parse_path($path); - - if ($path === false) { - return false; - } - $this->path = $path; - - $this->size = $this->sftp->size($path); - $this->mode = preg_replace('#[bt]$#', '', $mode); - $this->eof = false; - - if ($this->size === false) { - if ($this->mode[0] == 'r') { - return false; - } else { - $this->sftp->touch($path); - $this->size = 0; - } - } else { - switch ($this->mode[0]) { - case 'x': - return false; - case 'w': - $this->sftp->truncate($path, 0); - $this->size = 0; - } - } - - $this->pos = $this->mode[0] != 'a' ? 0 : $this->size; - - return true; - } - - /** - * Read from stream - * - * @param int $count - * @return mixed - * @access public - */ - function _stream_read($count) - { - switch ($this->mode) { - case 'w': - case 'a': - case 'x': - case 'c': - return false; - } - - // commented out because some files - eg. /dev/urandom - will say their size is 0 when in fact it's kinda infinite - //if ($this->pos >= $this->size) { - // $this->eof = true; - // return false; - //} - - $result = $this->sftp->get($this->path, false, $this->pos, $count); - if (isset($this->notification) && is_callable($this->notification)) { - if ($result === false) { - call_user_func($this->notification, STREAM_NOTIFY_FAILURE, STREAM_NOTIFY_SEVERITY_ERR, $this->sftp->getLastSFTPError(), NET_SFTP_OPEN, 0, 0); - return 0; - } - // seems that PHP calls stream_read in 8k chunks - call_user_func($this->notification, STREAM_NOTIFY_PROGRESS, STREAM_NOTIFY_SEVERITY_INFO, '', 0, strlen($result), $this->size); - } - - if (empty($result)) { // ie. false or empty string - $this->eof = true; - return false; - } - $this->pos+= strlen($result); - - return $result; - } - - /** - * Write to stream - * - * @param string $data - * @return mixed - * @access public - */ - function _stream_write($data) - { - switch ($this->mode) { - case 'r': - return false; - } - - $result = $this->sftp->put($this->path, $data, NET_SFTP_STRING, $this->pos); - if (isset($this->notification) && is_callable($this->notification)) { - if (!$result) { - call_user_func($this->notification, STREAM_NOTIFY_FAILURE, STREAM_NOTIFY_SEVERITY_ERR, $this->sftp->getLastSFTPError(), NET_SFTP_OPEN, 0, 0); - return 0; - } - // seems that PHP splits up strings into 8k blocks before calling stream_write - call_user_func($this->notification, STREAM_NOTIFY_PROGRESS, STREAM_NOTIFY_SEVERITY_INFO, '', 0, strlen($data), strlen($data)); - } - - if ($result === false) { - return false; - } - $this->pos+= strlen($data); - if ($this->pos > $this->size) { - $this->size = $this->pos; - } - $this->eof = false; - return strlen($data); - } - - /** - * Retrieve the current position of a stream - * - * @return int - * @access public - */ - function _stream_tell() - { - return $this->pos; - } - - /** - * Tests for end-of-file on a file pointer - * - * In my testing there are four classes functions that normally effect the pointer: - * fseek, fputs / fwrite, fgets / fread and ftruncate. - * - * Only fgets / fread, however, results in feof() returning true. do fputs($fp, 'aaa') on a blank file and feof() - * will return false. do fread($fp, 1) and feof() will then return true. do fseek($fp, 10) on ablank file and feof() - * will return false. do fread($fp, 1) and feof() will then return true. - * - * @return bool - * @access public - */ - function _stream_eof() - { - return $this->eof; - } - - /** - * Seeks to specific location in a stream - * - * @param int $offset - * @param int $whence - * @return bool - * @access public - */ - function _stream_seek($offset, $whence) - { - switch ($whence) { - case SEEK_SET: - if ($offset >= $this->size || $offset < 0) { - return false; - } - break; - case SEEK_CUR: - $offset+= $this->pos; - break; - case SEEK_END: - $offset+= $this->size; - } - - $this->pos = $offset; - $this->eof = false; - return true; - } - - /** - * Change stream options - * - * @param string $path - * @param int $option - * @param mixed $var - * @return bool - * @access public - */ - function _stream_metadata($path, $option, $var) - { - $path = $this->_parse_path($path); - if ($path === false) { - return false; - } - - // stream_metadata was introduced in PHP 5.4.0 but as of 5.4.11 the constants haven't been defined - // see http://www.php.net/streamwrapper.stream-metadata and https://bugs.php.net/64246 - // and https://github.com/php/php-src/blob/master/main/php_streams.h#L592 - switch ($option) { - case 1: // PHP_STREAM_META_TOUCH - return $this->sftp->touch($path, $var[0], $var[1]); - case 2: // PHP_STREAM_OWNER_NAME - case 3: // PHP_STREAM_GROUP_NAME - return false; - case 4: // PHP_STREAM_META_OWNER - return $this->sftp->chown($path, $var); - case 5: // PHP_STREAM_META_GROUP - return $this->sftp->chgrp($path, $var); - case 6: // PHP_STREAM_META_ACCESS - return $this->sftp->chmod($path, $var) !== false; - } - } - - /** - * Retrieve the underlaying resource - * - * @param int $cast_as - * @return resource - * @access public - */ - function _stream_cast($cast_as) - { - return $this->sftp->fsock; - } - - /** - * Advisory file locking - * - * @param int $operation - * @return bool - * @access public - */ - function _stream_lock($operation) - { - return false; - } - - /** - * Renames a file or directory - * - * Attempts to rename oldname to newname, moving it between directories if necessary. - * If newname exists, it will be overwritten. This is a departure from what Net_SFTP - * does. - * - * @param string $path_from - * @param string $path_to - * @return bool - * @access public - */ - function _rename($path_from, $path_to) - { - $path1 = parse_url($path_from); - $path2 = parse_url($path_to); - unset($path1['path'], $path2['path']); - if ($path1 != $path2) { - return false; - } - - $path_from = $this->_parse_path($path_from); - $path_to = parse_url($path_to); - if ($path_from === false) { - return false; - } - - $path_to = $path_to['path']; // the $component part of parse_url() was added in PHP 5.1.2 - // "It is an error if there already exists a file with the name specified by newpath." - // -- http://tools.ietf.org/html/draft-ietf-secsh-filexfer-02#section-6.5 - if (!$this->sftp->rename($path_from, $path_to)) { - if ($this->sftp->stat($path_to)) { - return $this->sftp->delete($path_to, true) && $this->sftp->rename($path_from, $path_to); - } - return false; - } - - return true; - } - - /** - * Open directory handle - * - * The only $options is "whether or not to enforce safe_mode (0x04)". Since safe mode was deprecated in 5.3 and - * removed in 5.4 I'm just going to ignore it. - * - * Also, nlist() is the best that this function is realistically going to be able to do. When an SFTP client - * sends a SSH_FXP_READDIR packet you don't generally get info on just one file but on multiple files. Quoting - * the SFTP specs: - * - * The SSH_FXP_NAME response has the following format: - * - * uint32 id - * uint32 count - * repeats count times: - * string filename - * string longname - * ATTRS attrs - * - * @param string $path - * @param int $options - * @return bool - * @access public - */ - function _dir_opendir($path, $options) - { - $path = $this->_parse_path($path); - if ($path === false) { - return false; - } - $this->pos = 0; - $this->entries = $this->sftp->nlist($path); - return $this->entries !== false; - } - - /** - * Read entry from directory handle - * - * @return mixed - * @access public - */ - function _dir_readdir() - { - if (isset($this->entries[$this->pos])) { - return $this->entries[$this->pos++]; - } - return false; - } - - /** - * Rewind directory handle - * - * @return bool - * @access public - */ - function _dir_rewinddir() - { - $this->pos = 0; - return true; - } - - /** - * Close directory handle - * - * @return bool - * @access public - */ - function _dir_closedir() - { - return true; - } - - /** - * Create a directory - * - * Only valid $options is STREAM_MKDIR_RECURSIVE - * - * @param string $path - * @param int $mode - * @param int $options - * @return bool - * @access public - */ - function _mkdir($path, $mode, $options) - { - $path = $this->_parse_path($path); - if ($path === false) { - return false; - } - - return $this->sftp->mkdir($path, $mode, $options & STREAM_MKDIR_RECURSIVE); - } - - /** - * Removes a directory - * - * Only valid $options is STREAM_MKDIR_RECURSIVE per <http://php.net/streamwrapper.rmdir>, however, - * <http://php.net/rmdir> does not have a $recursive parameter as mkdir() does so I don't know how - * STREAM_MKDIR_RECURSIVE is supposed to be set. Also, when I try it out with rmdir() I get 8 as - * $options. What does 8 correspond to? - * - * @param string $path - * @param int $mode - * @param int $options - * @return bool - * @access public - */ - function _rmdir($path, $options) - { - $path = $this->_parse_path($path); - if ($path === false) { - return false; - } - - return $this->sftp->rmdir($path); - } - - /** - * Flushes the output - * - * See <http://php.net/fflush>. Always returns true because Net_SFTP doesn't cache stuff before writing - * - * @return bool - * @access public - */ - function _stream_flush() - { - return true; - } - - /** - * Retrieve information about a file resource - * - * @return mixed - * @access public - */ - function _stream_stat() - { - $results = $this->sftp->stat($this->path); - if ($results === false) { - return false; - } - return $results; - } - - /** - * Delete a file - * - * @param string $path - * @return bool - * @access public - */ - function _unlink($path) - { - $path = $this->_parse_path($path); - if ($path === false) { - return false; - } - - return $this->sftp->delete($path, false); - } - - /** - * Retrieve information about a file - * - * Ignores the STREAM_URL_STAT_QUIET flag because the entirety of Net_SFTP_Stream is quiet by default - * might be worthwhile to reconstruct bits 12-16 (ie. the file type) if mode doesn't have them but we'll - * cross that bridge when and if it's reached - * - * @param string $path - * @param int $flags - * @return mixed - * @access public - */ - function _url_stat($path, $flags) - { - $path = $this->_parse_path($path); - if ($path === false) { - return false; - } - - $results = $flags & STREAM_URL_STAT_LINK ? $this->sftp->lstat($path) : $this->sftp->stat($path); - if ($results === false) { - return false; - } - - return $results; - } - - /** - * Truncate stream - * - * @param int $new_size - * @return bool - * @access public - */ - function _stream_truncate($new_size) - { - if (!$this->sftp->truncate($this->path, $new_size)) { - return false; - } - - $this->eof = false; - $this->size = $new_size; - - return true; - } - - /** - * Change stream options - * - * STREAM_OPTION_WRITE_BUFFER isn't supported for the same reason stream_flush isn't. - * The other two aren't supported because of limitations in Net_SFTP. - * - * @param int $option - * @param int $arg1 - * @param int $arg2 - * @return bool - * @access public - */ - function _stream_set_option($option, $arg1, $arg2) - { - return false; - } - - /** - * Close an resource - * - * @access public - */ - function _stream_close() - { - } - - /** - * __call Magic Method - * - * When you're utilizing an SFTP stream you're not calling the methods in this class directly - PHP is calling them for you. - * Which kinda begs the question... what methods is PHP calling and what parameters is it passing to them? This function - * lets you figure that out. - * - * If NET_SFTP_STREAM_LOGGING is defined all calls will be output on the screen and then (regardless of whether or not - * NET_SFTP_STREAM_LOGGING is enabled) the parameters will be passed through to the appropriate method. - * - * @param string - * @param array - * @return mixed - * @access public - */ - function __call($name, $arguments) - { - if (defined('NET_SFTP_STREAM_LOGGING')) { - echo $name . '('; - $last = count($arguments) - 1; - foreach ($arguments as $i => $argument) { - var_export($argument); - if ($i != $last) { - echo ','; - } - } - echo ")\r\n"; - } - $name = '_' . $name; - if (!method_exists($this, $name)) { - return false; - } - return call_user_func_array(array($this, $name), $arguments); - } -} - -Net_SFTP_Stream::register(); diff --git a/libs/phpseclib-1.0.4/phpseclib/Net/SSH1.php b/libs/phpseclib-1.0.4/phpseclib/Net/SSH1.php deleted file mode 100644 index fb23daa..0000000 --- a/libs/phpseclib-1.0.4/phpseclib/Net/SSH1.php +++ /dev/null @@ -1,1666 +0,0 @@ -<?php - -/** - * Pure-PHP implementation of SSHv1. - * - * PHP versions 4 and 5 - * - * Here's a short example of how to use this library: - * <code> - * <?php - * include 'Net/SSH1.php'; - * - * $ssh = new Net_SSH1('www.domain.tld'); - * if (!$ssh->login('username', 'password')) { - * exit('Login Failed'); - * } - * - * echo $ssh->exec('ls -la'); - * ?> - * </code> - * - * Here's another short example: - * <code> - * <?php - * include 'Net/SSH1.php'; - * - * $ssh = new Net_SSH1('www.domain.tld'); - * if (!$ssh->login('username', 'password')) { - * exit('Login Failed'); - * } - * - * echo $ssh->read('username@username:~$'); - * $ssh->write("ls -la\n"); - * echo $ssh->read('username@username:~$'); - * ?> - * </code> - * - * More information on the SSHv1 specification can be found by reading - * {@link http://www.snailbook.com/docs/protocol-1.5.txt protocol-1.5.txt}. - * - * 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_SSH1 - * @author Jim Wigginton <terrafrost@php.net> - * @copyright 2007 Jim Wigginton - * @license http://www.opensource.org/licenses/mit-license.html MIT License - * @link http://phpseclib.sourceforge.net - */ - -/**#@+ - * Encryption Methods - * - * @see self::getSupportedCiphers() - * @access public - */ -/** - * No encryption - * - * Not supported. - */ -define('NET_SSH1_CIPHER_NONE', 0); -/** - * IDEA in CFB mode - * - * Not supported. - */ -define('NET_SSH1_CIPHER_IDEA', 1); -/** - * DES in CBC mode - */ -define('NET_SSH1_CIPHER_DES', 2); -/** - * Triple-DES in CBC mode - * - * All implementations are required to support this - */ -define('NET_SSH1_CIPHER_3DES', 3); -/** - * TRI's Simple Stream encryption CBC - * - * Not supported nor is it defined in the official SSH1 specs. OpenSSH, however, does define it (see cipher.h), - * although it doesn't use it (see cipher.c) - */ -define('NET_SSH1_CIPHER_BROKEN_TSS', 4); -/** - * RC4 - * - * Not supported. - * - * @internal According to the SSH1 specs: - * - * "The first 16 bytes of the session key are used as the key for - * the server to client direction. The remaining 16 bytes are used - * as the key for the client to server direction. This gives - * independent 128-bit keys for each direction." - * - * This library currently only supports encryption when the same key is being used for both directions. This is - * because there's only one $crypto object. Two could be added ($encrypt and $decrypt, perhaps). - */ -define('NET_SSH1_CIPHER_RC4', 5); -/** - * Blowfish - * - * Not supported nor is it defined in the official SSH1 specs. OpenSSH, however, defines it (see cipher.h) and - * uses it (see cipher.c) - */ -define('NET_SSH1_CIPHER_BLOWFISH', 6); -/**#@-*/ - -/**#@+ - * Authentication Methods - * - * @see self::getSupportedAuthentications() - * @access public - */ -/** - * .rhosts or /etc/hosts.equiv - */ -define('NET_SSH1_AUTH_RHOSTS', 1); -/** - * pure RSA authentication - */ -define('NET_SSH1_AUTH_RSA', 2); -/** - * password authentication - * - * This is the only method that is supported by this library. - */ -define('NET_SSH1_AUTH_PASSWORD', 3); -/** - * .rhosts with RSA host authentication - */ -define('NET_SSH1_AUTH_RHOSTS_RSA', 4); -/**#@-*/ - -/**#@+ - * Terminal Modes - * - * @link http://3sp.com/content/developer/maverick-net/docs/Maverick.SSH.PseudoTerminalModesMembers.html - * @access private - */ -define('NET_SSH1_TTY_OP_END', 0); -/**#@-*/ - -/** - * The Response Type - * - * @see self::_get_binary_packet() - * @access private - */ -define('NET_SSH1_RESPONSE_TYPE', 1); - -/** - * The Response Data - * - * @see self::_get_binary_packet() - * @access private - */ -define('NET_SSH1_RESPONSE_DATA', 2); - -/**#@+ - * Execution Bitmap Masks - * - * @see self::bitmap - * @access private - */ -define('NET_SSH1_MASK_CONSTRUCTOR', 0x00000001); -define('NET_SSH1_MASK_CONNECTED', 0x00000002); -define('NET_SSH1_MASK_LOGIN', 0x00000004); -define('NET_SSH1_MASK_SHELL', 0x00000008); -/**#@-*/ - -/**#@+ - * @access public - * @see self::getLog() - */ -/** - * Returns the message numbers - */ -define('NET_SSH1_LOG_SIMPLE', 1); -/** - * Returns the message content - */ -define('NET_SSH1_LOG_COMPLEX', 2); -/** - * Outputs the content real-time - */ -define('NET_SSH1_LOG_REALTIME', 3); -/** - * Dumps the content real-time to a file - */ -define('NET_SSH1_LOG_REALTIME_FILE', 4); -/**#@-*/ - -/**#@+ - * @access public - * @see self::read() - */ -/** - * Returns when a string matching $expect exactly is found - */ -define('NET_SSH1_READ_SIMPLE', 1); -/** - * Returns when a string matching the regular expression $expect is found - */ -define('NET_SSH1_READ_REGEX', 2); -/**#@-*/ - -/** - * Pure-PHP implementation of SSHv1. - * - * @package Net_SSH1 - * @author Jim Wigginton <terrafrost@php.net> - * @access public - */ -class Net_SSH1 -{ - /** - * The SSH identifier - * - * @var string - * @access private - */ - var $identifier = 'SSH-1.5-phpseclib'; - - /** - * The Socket Object - * - * @var object - * @access private - */ - var $fsock; - - /** - * The cryptography object - * - * @var object - * @access private - */ - var $crypto = false; - - /** - * Execution Bitmap - * - * The bits that are set represent functions that have been called already. This is used to determine - * if a requisite function has been successfully executed. If not, an error should be thrown. - * - * @var int - * @access private - */ - var $bitmap = 0; - - /** - * The Server Key Public Exponent - * - * Logged for debug purposes - * - * @see self::getServerKeyPublicExponent() - * @var string - * @access private - */ - var $server_key_public_exponent; - - /** - * The Server Key Public Modulus - * - * Logged for debug purposes - * - * @see self::getServerKeyPublicModulus() - * @var string - * @access private - */ - var $server_key_public_modulus; - - /** - * The Host Key Public Exponent - * - * Logged for debug purposes - * - * @see self::getHostKeyPublicExponent() - * @var string - * @access private - */ - var $host_key_public_exponent; - - /** - * The Host Key Public Modulus - * - * Logged for debug purposes - * - * @see self::getHostKeyPublicModulus() - * @var string - * @access private - */ - var $host_key_public_modulus; - - /** - * Supported Ciphers - * - * Logged for debug purposes - * - * @see self::getSupportedCiphers() - * @var array - * @access private - */ - var $supported_ciphers = array( - NET_SSH1_CIPHER_NONE => 'No encryption', - NET_SSH1_CIPHER_IDEA => 'IDEA in CFB mode', - NET_SSH1_CIPHER_DES => 'DES in CBC mode', - NET_SSH1_CIPHER_3DES => 'Triple-DES in CBC mode', - NET_SSH1_CIPHER_BROKEN_TSS => 'TRI\'s Simple Stream encryption CBC', - NET_SSH1_CIPHER_RC4 => 'RC4', - NET_SSH1_CIPHER_BLOWFISH => 'Blowfish' - ); - - /** - * Supported Authentications - * - * Logged for debug purposes - * - * @see self::getSupportedAuthentications() - * @var array - * @access private - */ - var $supported_authentications = array( - NET_SSH1_AUTH_RHOSTS => '.rhosts or /etc/hosts.equiv', - NET_SSH1_AUTH_RSA => 'pure RSA authentication', - NET_SSH1_AUTH_PASSWORD => 'password authentication', - NET_SSH1_AUTH_RHOSTS_RSA => '.rhosts with RSA host authentication' - ); - - /** - * Server Identification - * - * @see self::getServerIdentification() - * @var string - * @access private - */ - var $server_identification = ''; - - /** - * Protocol Flags - * - * @see self::Net_SSH1() - * @var array - * @access private - */ - var $protocol_flags = array(); - - /** - * Protocol Flag Log - * - * @see self::getLog() - * @var array - * @access private - */ - var $protocol_flag_log = array(); - - /** - * Message Log - * - * @see self::getLog() - * @var array - * @access private - */ - var $message_log = array(); - - /** - * Real-time log file pointer - * - * @see self::_append_log() - * @var resource - * @access private - */ - var $realtime_log_file; - - /** - * Real-time log file size - * - * @see self::_append_log() - * @var int - * @access private - */ - var $realtime_log_size; - - /** - * Real-time log file wrap boolean - * - * @see self::_append_log() - * @var bool - * @access private - */ - var $realtime_log_wrap; - - /** - * Interactive Buffer - * - * @see self::read() - * @var array - * @access private - */ - var $interactiveBuffer = ''; - - /** - * Timeout - * - * @see self::setTimeout() - * @access private - */ - var $timeout; - - /** - * Current Timeout - * - * @see self::_get_channel_packet() - * @access private - */ - var $curTimeout; - - /** - * Log Boundary - * - * @see self::_format_log() - * @access private - */ - var $log_boundary = ':'; - - /** - * Log Long Width - * - * @see self::_format_log() - * @access private - */ - var $log_long_width = 65; - - /** - * Log Short Width - * - * @see self::_format_log() - * @access private - */ - var $log_short_width = 16; - - /** - * Hostname - * - * @see self::Net_SSH1() - * @see self::_connect() - * @var string - * @access private - */ - var $host; - - /** - * Port Number - * - * @see self::Net_SSH1() - * @see self::_connect() - * @var int - * @access private - */ - var $port; - - /** - * Timeout for initial connection - * - * Set by the constructor call. Calling setTimeout() is optional. If it's not called functions like - * exec() won't timeout unless some PHP setting forces it too. The timeout specified in the constructor, - * however, is non-optional. There will be a timeout, whether or not you set it. If you don't it'll be - * 10 seconds. It is used by fsockopen() in that function. - * - * @see self::Net_SSH1() - * @see self::_connect() - * @var int - * @access private - */ - var $connectionTimeout; - - /** - * Default cipher - * - * @see self::Net_SSH1() - * @see self::_connect() - * @var int - * @access private - */ - var $cipher; - - /** - * Default Constructor. - * - * Connects to an SSHv1 server - * - * @param string $host - * @param int $port - * @param int $timeout - * @param int $cipher - * @return Net_SSH1 - * @access public - */ - function __construct($host, $port = 22, $timeout = 10, $cipher = NET_SSH1_CIPHER_3DES) - { - if (!class_exists('Math_BigInteger')) { - include_once 'Math/BigInteger.php'; - } - - // Include Crypt_Random - // the class_exists() will only be called if the crypt_random_string function hasn't been defined and - // will trigger a call to __autoload() if you're wanting to auto-load classes - // call function_exists() a second time to stop the include_once from being called outside - // of the auto loader - if (!function_exists('crypt_random_string') && !class_exists('Crypt_Random') && !function_exists('crypt_random_string')) { - include_once 'Crypt/Random.php'; - } - - $this->protocol_flags = array( - 1 => 'NET_SSH1_MSG_DISCONNECT', - 2 => 'NET_SSH1_SMSG_PUBLIC_KEY', - 3 => 'NET_SSH1_CMSG_SESSION_KEY', - 4 => 'NET_SSH1_CMSG_USER', - 9 => 'NET_SSH1_CMSG_AUTH_PASSWORD', - 10 => 'NET_SSH1_CMSG_REQUEST_PTY', - 12 => 'NET_SSH1_CMSG_EXEC_SHELL', - 13 => 'NET_SSH1_CMSG_EXEC_CMD', - 14 => 'NET_SSH1_SMSG_SUCCESS', - 15 => 'NET_SSH1_SMSG_FAILURE', - 16 => 'NET_SSH1_CMSG_STDIN_DATA', - 17 => 'NET_SSH1_SMSG_STDOUT_DATA', - 18 => 'NET_SSH1_SMSG_STDERR_DATA', - 19 => 'NET_SSH1_CMSG_EOF', - 20 => 'NET_SSH1_SMSG_EXITSTATUS', - 33 => 'NET_SSH1_CMSG_EXIT_CONFIRMATION' - ); - - $this->_define_array($this->protocol_flags); - - $this->host = $host; - $this->port = $port; - $this->connectionTimeout = $timeout; - $this->cipher = $cipher; - } - - /** - * PHP4 compatible Default Constructor. - * - * @see self::__construct() - * @param string $host - * @param int $port - * @param int $timeout - * @param int $cipher - * @access public - */ - function Net_SSH1($host, $port = 22, $timeout = 10, $cipher = NET_SSH1_CIPHER_3DES) - { - $this->__construct($host, $port, $timeout, $cipher); - } - - /** - * Connect to an SSHv1 server - * - * @return bool - * @access private - */ - function _connect() - { - $this->fsock = @fsockopen($this->host, $this->port, $errno, $errstr, $this->connectionTimeout); - if (!$this->fsock) { - user_error(rtrim("Cannot connect to {$this->host}:{$this->port}. Error $errno. $errstr")); - return false; - } - - $this->server_identification = $init_line = fgets($this->fsock, 255); - - if (defined('NET_SSH1_LOGGING')) { - $this->_append_log('<-', $this->server_identification); - $this->_append_log('->', $this->identifier . "\r\n"); - } - - if (!preg_match('#SSH-([0-9\.]+)-(.+)#', $init_line, $parts)) { - user_error('Can only connect to SSH servers'); - return false; - } - if ($parts[1][0] != 1) { - user_error("Cannot connect to SSH $parts[1] servers"); - return false; - } - - fputs($this->fsock, $this->identifier."\r\n"); - - $response = $this->_get_binary_packet(); - if ($response[NET_SSH1_RESPONSE_TYPE] != NET_SSH1_SMSG_PUBLIC_KEY) { - user_error('Expected SSH_SMSG_PUBLIC_KEY'); - return false; - } - - $anti_spoofing_cookie = $this->_string_shift($response[NET_SSH1_RESPONSE_DATA], 8); - - $this->_string_shift($response[NET_SSH1_RESPONSE_DATA], 4); - - $temp = unpack('nlen', $this->_string_shift($response[NET_SSH1_RESPONSE_DATA], 2)); - $server_key_public_exponent = new Math_BigInteger($this->_string_shift($response[NET_SSH1_RESPONSE_DATA], ceil($temp['len'] / 8)), 256); - $this->server_key_public_exponent = $server_key_public_exponent; - - $temp = unpack('nlen', $this->_string_shift($response[NET_SSH1_RESPONSE_DATA], 2)); - $server_key_public_modulus = new Math_BigInteger($this->_string_shift($response[NET_SSH1_RESPONSE_DATA], ceil($temp['len'] / 8)), 256); - $this->server_key_public_modulus = $server_key_public_modulus; - - $this->_string_shift($response[NET_SSH1_RESPONSE_DATA], 4); - - $temp = unpack('nlen', $this->_string_shift($response[NET_SSH1_RESPONSE_DATA], 2)); - $host_key_public_exponent = new Math_BigInteger($this->_string_shift($response[NET_SSH1_RESPONSE_DATA], ceil($temp['len'] / 8)), 256); - $this->host_key_public_exponent = $host_key_public_exponent; - - $temp = unpack('nlen', $this->_string_shift($response[NET_SSH1_RESPONSE_DATA], 2)); - $host_key_public_modulus = new Math_BigInteger($this->_string_shift($response[NET_SSH1_RESPONSE_DATA], ceil($temp['len'] / 8)), 256); - $this->host_key_public_modulus = $host_key_public_modulus; - - $this->_string_shift($response[NET_SSH1_RESPONSE_DATA], 4); - - // get a list of the supported ciphers - extract(unpack('Nsupported_ciphers_mask', $this->_string_shift($response[NET_SSH1_RESPONSE_DATA], 4))); - foreach ($this->supported_ciphers as $mask => $name) { - if (($supported_ciphers_mask & (1 << $mask)) == 0) { - unset($this->supported_ciphers[$mask]); - } - } - - // get a list of the supported authentications - extract(unpack('Nsupported_authentications_mask', $this->_string_shift($response[NET_SSH1_RESPONSE_DATA], 4))); - foreach ($this->supported_authentications as $mask => $name) { - if (($supported_authentications_mask & (1 << $mask)) == 0) { - unset($this->supported_authentications[$mask]); - } - } - - $session_id = pack('H*', md5($host_key_public_modulus->toBytes() . $server_key_public_modulus->toBytes() . $anti_spoofing_cookie)); - - $session_key = crypt_random_string(32); - $double_encrypted_session_key = $session_key ^ str_pad($session_id, 32, chr(0)); - - if ($server_key_public_modulus->compare($host_key_public_modulus) < 0) { - $double_encrypted_session_key = $this->_rsa_crypt( - $double_encrypted_session_key, - array( - $server_key_public_exponent, - $server_key_public_modulus - ) - ); - $double_encrypted_session_key = $this->_rsa_crypt( - $double_encrypted_session_key, - array( - $host_key_public_exponent, - $host_key_public_modulus - ) - ); - } else { - $double_encrypted_session_key = $this->_rsa_crypt( - $double_encrypted_session_key, - array( - $host_key_public_exponent, - $host_key_public_modulus - ) - ); - $double_encrypted_session_key = $this->_rsa_crypt( - $double_encrypted_session_key, - array( - $server_key_public_exponent, - $server_key_public_modulus - ) - ); - } - - $cipher = isset($this->supported_ciphers[$this->cipher]) ? $this->cipher : NET_SSH1_CIPHER_3DES; - $data = pack('C2a*na*N', NET_SSH1_CMSG_SESSION_KEY, $cipher, $anti_spoofing_cookie, 8 * strlen($double_encrypted_session_key), $double_encrypted_session_key, 0); - - if (!$this->_send_binary_packet($data)) { - user_error('Error sending SSH_CMSG_SESSION_KEY'); - return false; - } - - switch ($cipher) { - //case NET_SSH1_CIPHER_NONE: - // $this->crypto = new Crypt_Null(); - // break; - case NET_SSH1_CIPHER_DES: - if (!class_exists('Crypt_DES')) { - include_once 'Crypt/DES.php'; - } - $this->crypto = new Crypt_DES(); - $this->crypto->disablePadding(); - $this->crypto->enableContinuousBuffer(); - $this->crypto->setKey(substr($session_key, 0, 8)); - break; - case NET_SSH1_CIPHER_3DES: - if (!class_exists('Crypt_TripleDES')) { - include_once 'Crypt/TripleDES.php'; - } - $this->crypto = new Crypt_TripleDES(CRYPT_DES_MODE_3CBC); - $this->crypto->disablePadding(); - $this->crypto->enableContinuousBuffer(); - $this->crypto->setKey(substr($session_key, 0, 24)); - break; - //case NET_SSH1_CIPHER_RC4: - // if (!class_exists('Crypt_RC4')) { - // include_once 'Crypt/RC4.php'; - // } - // $this->crypto = new Crypt_RC4(); - // $this->crypto->enableContinuousBuffer(); - // $this->crypto->setKey(substr($session_key, 0, 16)); - // break; - } - - $response = $this->_get_binary_packet(); - - if ($response[NET_SSH1_RESPONSE_TYPE] != NET_SSH1_SMSG_SUCCESS) { - user_error('Expected SSH_SMSG_SUCCESS'); - return false; - } - - $this->bitmap = NET_SSH1_MASK_CONNECTED; - - return true; - } - - /** - * Login - * - * @param string $username - * @param string $password - * @return bool - * @access public - */ - function login($username, $password = '') - { - if (!($this->bitmap & NET_SSH1_MASK_CONSTRUCTOR)) { - $this->bitmap |= NET_SSH1_MASK_CONSTRUCTOR; - if (!$this->_connect()) { - return false; - } - } - - if (!($this->bitmap & NET_SSH1_MASK_CONNECTED)) { - return false; - } - - $data = pack('CNa*', NET_SSH1_CMSG_USER, strlen($username), $username); - - if (!$this->_send_binary_packet($data)) { - user_error('Error sending SSH_CMSG_USER'); - return false; - } - - $response = $this->_get_binary_packet(); - - if ($response === true) { - return false; - } - if ($response[NET_SSH1_RESPONSE_TYPE] == NET_SSH1_SMSG_SUCCESS) { - $this->bitmap |= NET_SSH1_MASK_LOGIN; - return true; - } elseif ($response[NET_SSH1_RESPONSE_TYPE] != NET_SSH1_SMSG_FAILURE) { - user_error('Expected SSH_SMSG_SUCCESS or SSH_SMSG_FAILURE'); - return false; - } - - $data = pack('CNa*', NET_SSH1_CMSG_AUTH_PASSWORD, strlen($password), $password); - - if (!$this->_send_binary_packet($data)) { - user_error('Error sending SSH_CMSG_AUTH_PASSWORD'); - return false; - } - - // remove the username and password from the last logged packet - if (defined('NET_SSH1_LOGGING') && NET_SSH1_LOGGING == NET_SSH1_LOG_COMPLEX) { - $data = pack('CNa*', NET_SSH1_CMSG_AUTH_PASSWORD, strlen('password'), 'password'); - $this->message_log[count($this->message_log) - 1] = $data; - } - - $response = $this->_get_binary_packet(); - - if ($response === true) { - return false; - } - if ($response[NET_SSH1_RESPONSE_TYPE] == NET_SSH1_SMSG_SUCCESS) { - $this->bitmap |= NET_SSH1_MASK_LOGIN; - return true; - } elseif ($response[NET_SSH1_RESPONSE_TYPE] == NET_SSH1_SMSG_FAILURE) { - return false; - } else { - user_error('Expected SSH_SMSG_SUCCESS or SSH_SMSG_FAILURE'); - return false; - } - } - - /** - * Set Timeout - * - * $ssh->exec('ping 127.0.0.1'); on a Linux host will never return and will run indefinitely. setTimeout() makes it so it'll timeout. - * Setting $timeout to false or 0 will mean there is no timeout. - * - * @param mixed $timeout - */ - function setTimeout($timeout) - { - $this->timeout = $this->curTimeout = $timeout; - } - - /** - * Executes a command on a non-interactive shell, returns the output, and quits. - * - * An SSH1 server will close the connection after a command has been executed on a non-interactive shell. SSH2 - * servers don't, however, this isn't an SSH2 client. The way this works, on the server, is by initiating a - * shell with the -s option, as discussed in the following links: - * - * {@link http://www.faqs.org/docs/bashman/bashref_65.html http://www.faqs.org/docs/bashman/bashref_65.html} - * {@link http://www.faqs.org/docs/bashman/bashref_62.html http://www.faqs.org/docs/bashman/bashref_62.html} - * - * To execute further commands, a new Net_SSH1 object will need to be created. - * - * Returns false on failure and the output, otherwise. - * - * @see self::interactiveRead() - * @see self::interactiveWrite() - * @param string $cmd - * @return mixed - * @access public - */ - function exec($cmd, $block = true) - { - if (!($this->bitmap & NET_SSH1_MASK_LOGIN)) { - user_error('Operation disallowed prior to login()'); - return false; - } - - $data = pack('CNa*', NET_SSH1_CMSG_EXEC_CMD, strlen($cmd), $cmd); - - if (!$this->_send_binary_packet($data)) { - user_error('Error sending SSH_CMSG_EXEC_CMD'); - return false; - } - - if (!$block) { - return true; - } - - $output = ''; - $response = $this->_get_binary_packet(); - - if ($response !== false) { - do { - $output.= substr($response[NET_SSH1_RESPONSE_DATA], 4); - $response = $this->_get_binary_packet(); - } while (is_array($response) && $response[NET_SSH1_RESPONSE_TYPE] != NET_SSH1_SMSG_EXITSTATUS); - } - - $data = pack('C', NET_SSH1_CMSG_EXIT_CONFIRMATION); - - // i don't think it's really all that important if this packet gets sent or not. - $this->_send_binary_packet($data); - - fclose($this->fsock); - - // reset the execution bitmap - a new Net_SSH1 object needs to be created. - $this->bitmap = 0; - - return $output; - } - - /** - * Creates an interactive shell - * - * @see self::interactiveRead() - * @see self::interactiveWrite() - * @return bool - * @access private - */ - function _initShell() - { - // connect using the sample parameters in protocol-1.5.txt. - // according to wikipedia.org's entry on text terminals, "the fundamental type of application running on a text - // terminal is a command line interpreter or shell". thus, opening a terminal session to run the shell. - $data = pack('CNa*N4C', NET_SSH1_CMSG_REQUEST_PTY, strlen('vt100'), 'vt100', 24, 80, 0, 0, NET_SSH1_TTY_OP_END); - - if (!$this->_send_binary_packet($data)) { - user_error('Error sending SSH_CMSG_REQUEST_PTY'); - return false; - } - - $response = $this->_get_binary_packet(); - - if ($response === true) { - return false; - } - if ($response[NET_SSH1_RESPONSE_TYPE] != NET_SSH1_SMSG_SUCCESS) { - user_error('Expected SSH_SMSG_SUCCESS'); - return false; - } - - $data = pack('C', NET_SSH1_CMSG_EXEC_SHELL); - - if (!$this->_send_binary_packet($data)) { - user_error('Error sending SSH_CMSG_EXEC_SHELL'); - return false; - } - - $this->bitmap |= NET_SSH1_MASK_SHELL; - - //stream_set_blocking($this->fsock, 0); - - return true; - } - - /** - * Inputs a command into an interactive shell. - * - * @see self::interactiveWrite() - * @param string $cmd - * @return bool - * @access public - */ - function write($cmd) - { - return $this->interactiveWrite($cmd); - } - - /** - * Returns the output of an interactive shell when there's a match for $expect - * - * $expect can take the form of a string literal or, if $mode == NET_SSH1_READ_REGEX, - * a regular expression. - * - * @see self::write() - * @param string $expect - * @param int $mode - * @return bool - * @access public - */ - function read($expect, $mode = NET_SSH1_READ_SIMPLE) - { - if (!($this->bitmap & NET_SSH1_MASK_LOGIN)) { - user_error('Operation disallowed prior to login()'); - return false; - } - - if (!($this->bitmap & NET_SSH1_MASK_SHELL) && !$this->_initShell()) { - user_error('Unable to initiate an interactive shell session'); - return false; - } - - $match = $expect; - while (true) { - if ($mode == NET_SSH1_READ_REGEX) { - preg_match($expect, $this->interactiveBuffer, $matches); - $match = isset($matches[0]) ? $matches[0] : ''; - } - $pos = strlen($match) ? strpos($this->interactiveBuffer, $match) : false; - if ($pos !== false) { - return $this->_string_shift($this->interactiveBuffer, $pos + strlen($match)); - } - $response = $this->_get_binary_packet(); - - if ($response === true) { - return $this->_string_shift($this->interactiveBuffer, strlen($this->interactiveBuffer)); - } - $this->interactiveBuffer.= substr($response[NET_SSH1_RESPONSE_DATA], 4); - } - } - - /** - * Inputs a command into an interactive shell. - * - * @see self::interactiveRead() - * @param string $cmd - * @return bool - * @access public - */ - function interactiveWrite($cmd) - { - if (!($this->bitmap & NET_SSH1_MASK_LOGIN)) { - user_error('Operation disallowed prior to login()'); - return false; - } - - if (!($this->bitmap & NET_SSH1_MASK_SHELL) && !$this->_initShell()) { - user_error('Unable to initiate an interactive shell session'); - return false; - } - - $data = pack('CNa*', NET_SSH1_CMSG_STDIN_DATA, strlen($cmd), $cmd); - - if (!$this->_send_binary_packet($data)) { - user_error('Error sending SSH_CMSG_STDIN'); - return false; - } - - return true; - } - - /** - * Returns the output of an interactive shell when no more output is available. - * - * Requires PHP 4.3.0 or later due to the use of the stream_select() function. If you see stuff like - * "^[[00m", you're seeing ANSI escape codes. According to - * {@link http://support.microsoft.com/kb/101875 How to Enable ANSI.SYS in a Command Window}, "Windows NT - * does not support ANSI escape sequences in Win32 Console applications", so if you're a Windows user, - * there's not going to be much recourse. - * - * @see self::interactiveRead() - * @return string - * @access public - */ - function interactiveRead() - { - if (!($this->bitmap & NET_SSH1_MASK_LOGIN)) { - user_error('Operation disallowed prior to login()'); - return false; - } - - if (!($this->bitmap & NET_SSH1_MASK_SHELL) && !$this->_initShell()) { - user_error('Unable to initiate an interactive shell session'); - return false; - } - - $read = array($this->fsock); - $write = $except = null; - if (stream_select($read, $write, $except, 0)) { - $response = $this->_get_binary_packet(); - return substr($response[NET_SSH1_RESPONSE_DATA], 4); - } else { - return ''; - } - } - - /** - * Disconnect - * - * @access public - */ - function disconnect() - { - $this->_disconnect(); - } - - /** - * Destructor. - * - * Will be called, automatically, if you're supporting just PHP5. If you're supporting PHP4, you'll need to call - * disconnect(). - * - * @access public - */ - function __destruct() - { - $this->_disconnect(); - } - - /** - * Disconnect - * - * @param string $msg - * @access private - */ - function _disconnect($msg = 'Client Quit') - { - if ($this->bitmap) { - $data = pack('C', NET_SSH1_CMSG_EOF); - $this->_send_binary_packet($data); - /* - $response = $this->_get_binary_packet(); - if ($response === true) { - $response = array(NET_SSH1_RESPONSE_TYPE => -1); - } - switch ($response[NET_SSH1_RESPONSE_TYPE]) { - case NET_SSH1_SMSG_EXITSTATUS: - $data = pack('C', NET_SSH1_CMSG_EXIT_CONFIRMATION); - break; - default: - $data = pack('CNa*', NET_SSH1_MSG_DISCONNECT, strlen($msg), $msg); - } - */ - $data = pack('CNa*', NET_SSH1_MSG_DISCONNECT, strlen($msg), $msg); - - $this->_send_binary_packet($data); - fclose($this->fsock); - $this->bitmap = 0; - } - } - - /** - * Gets Binary Packets - * - * See 'The Binary Packet Protocol' of protocol-1.5.txt for more info. - * - * Also, this function could be improved upon by adding detection for the following exploit: - * http://www.securiteam.com/securitynews/5LP042K3FY.html - * - * @see self::_send_binary_packet() - * @return array - * @access private - */ - function _get_binary_packet() - { - if (feof($this->fsock)) { - //user_error('connection closed prematurely'); - return false; - } - - if ($this->curTimeout) { - $read = array($this->fsock); - $write = $except = null; - - $start = strtok(microtime(), ' ') + strtok(''); // http://php.net/microtime#61838 - $sec = floor($this->curTimeout); - $usec = 1000000 * ($this->curTimeout - $sec); - // on windows this returns a "Warning: Invalid CRT parameters detected" error - if (!@stream_select($read, $write, $except, $sec, $usec) && !count($read)) { - //$this->_disconnect('Timeout'); - return true; - } - $elapsed = strtok(microtime(), ' ') + strtok('') - $start; - $this->curTimeout-= $elapsed; - } - - $start = strtok(microtime(), ' ') + strtok(''); // http://php.net/microtime#61838 - $temp = unpack('Nlength', fread($this->fsock, 4)); - - $padding_length = 8 - ($temp['length'] & 7); - $length = $temp['length'] + $padding_length; - $raw = ''; - - while ($length > 0) { - $temp = fread($this->fsock, $length); - $raw.= $temp; - $length-= strlen($temp); - } - $stop = strtok(microtime(), ' ') + strtok(''); - - if (strlen($raw) && $this->crypto !== false) { - $raw = $this->crypto->decrypt($raw); - } - - $padding = substr($raw, 0, $padding_length); - $type = $raw[$padding_length]; - $data = substr($raw, $padding_length + 1, -4); - - $temp = unpack('Ncrc', substr($raw, -4)); - - //if ( $temp['crc'] != $this->_crc($padding . $type . $data) ) { - // user_error('Bad CRC in packet from server'); - // return false; - //} - - $type = ord($type); - - if (defined('NET_SSH1_LOGGING')) { - $temp = isset($this->protocol_flags[$type]) ? $this->protocol_flags[$type] : 'UNKNOWN'; - $temp = '<- ' . $temp . - ' (' . round($stop - $start, 4) . 's)'; - $this->_append_log($temp, $data); - } - - return array( - NET_SSH1_RESPONSE_TYPE => $type, - NET_SSH1_RESPONSE_DATA => $data - ); - } - - /** - * Sends Binary Packets - * - * Returns true on success, false on failure. - * - * @see self::_get_binary_packet() - * @param string $data - * @return bool - * @access private - */ - function _send_binary_packet($data) - { - if (feof($this->fsock)) { - //user_error('connection closed prematurely'); - return false; - } - - $length = strlen($data) + 4; - - $padding = crypt_random_string(8 - ($length & 7)); - - $orig = $data; - $data = $padding . $data; - $data.= pack('N', $this->_crc($data)); - - if ($this->crypto !== false) { - $data = $this->crypto->encrypt($data); - } - - $packet = pack('Na*', $length, $data); - - $start = strtok(microtime(), ' ') + strtok(''); // http://php.net/microtime#61838 - $result = strlen($packet) == fputs($this->fsock, $packet); - $stop = strtok(microtime(), ' ') + strtok(''); - - if (defined('NET_SSH1_LOGGING')) { - $temp = isset($this->protocol_flags[ord($orig[0])]) ? $this->protocol_flags[ord($orig[0])] : 'UNKNOWN'; - $temp = '-> ' . $temp . - ' (' . round($stop - $start, 4) . 's)'; - $this->_append_log($temp, $orig); - } - - return $result; - } - - /** - * Cyclic Redundancy Check (CRC) - * - * PHP's crc32 function is implemented slightly differently than the one that SSH v1 uses, so - * we've reimplemented it. A more detailed discussion of the differences can be found after - * $crc_lookup_table's initialization. - * - * @see self::_get_binary_packet() - * @see self::_send_binary_packet() - * @param string $data - * @return int - * @access private - */ - function _crc($data) - { - static $crc_lookup_table = array( - 0x00000000, 0x77073096, 0xEE0E612C, 0x990951BA, - 0x076DC419, 0x706AF48F, 0xE963A535, 0x9E6495A3, - 0x0EDB8832, 0x79DCB8A4, 0xE0D5E91E, 0x97D2D988, - 0x09B64C2B, 0x7EB17CBD, 0xE7B82D07, 0x90BF1D91, - 0x1DB71064, 0x6AB020F2, 0xF3B97148, 0x84BE41DE, - 0x1ADAD47D, 0x6DDDE4EB, 0xF4D4B551, 0x83D385C7, - 0x136C9856, 0x646BA8C0, 0xFD62F97A, 0x8A65C9EC, - 0x14015C4F, 0x63066CD9, 0xFA0F3D63, 0x8D080DF5, - 0x3B6E20C8, 0x4C69105E, 0xD56041E4, 0xA2677172, - 0x3C03E4D1, 0x4B04D447, 0xD20D85FD, 0xA50AB56B, - 0x35B5A8FA, 0x42B2986C, 0xDBBBC9D6, 0xACBCF940, - 0x32D86CE3, 0x45DF5C75, 0xDCD60DCF, 0xABD13D59, - 0x26D930AC, 0x51DE003A, 0xC8D75180, 0xBFD06116, - 0x21B4F4B5, 0x56B3C423, 0xCFBA9599, 0xB8BDA50F, - 0x2802B89E, 0x5F058808, 0xC60CD9B2, 0xB10BE924, - 0x2F6F7C87, 0x58684C11, 0xC1611DAB, 0xB6662D3D, - 0x76DC4190, 0x01DB7106, 0x98D220BC, 0xEFD5102A, - 0x71B18589, 0x06B6B51F, 0x9FBFE4A5, 0xE8B8D433, - 0x7807C9A2, 0x0F00F934, 0x9609A88E, 0xE10E9818, - 0x7F6A0DBB, 0x086D3D2D, 0x91646C97, 0xE6635C01, - 0x6B6B51F4, 0x1C6C6162, 0x856530D8, 0xF262004E, - 0x6C0695ED, 0x1B01A57B, 0x8208F4C1, 0xF50FC457, - 0x65B0D9C6, 0x12B7E950, 0x8BBEB8EA, 0xFCB9887C, - 0x62DD1DDF, 0x15DA2D49, 0x8CD37CF3, 0xFBD44C65, - 0x4DB26158, 0x3AB551CE, 0xA3BC0074, 0xD4BB30E2, - 0x4ADFA541, 0x3DD895D7, 0xA4D1C46D, 0xD3D6F4FB, - 0x4369E96A, 0x346ED9FC, 0xAD678846, 0xDA60B8D0, - 0x44042D73, 0x33031DE5, 0xAA0A4C5F, 0xDD0D7CC9, - 0x5005713C, 0x270241AA, 0xBE0B1010, 0xC90C2086, - 0x5768B525, 0x206F85B3, 0xB966D409, 0xCE61E49F, - 0x5EDEF90E, 0x29D9C998, 0xB0D09822, 0xC7D7A8B4, - 0x59B33D17, 0x2EB40D81, 0xB7BD5C3B, 0xC0BA6CAD, - 0xEDB88320, 0x9ABFB3B6, 0x03B6E20C, 0x74B1D29A, - 0xEAD54739, 0x9DD277AF, 0x04DB2615, 0x73DC1683, - 0xE3630B12, 0x94643B84, 0x0D6D6A3E, 0x7A6A5AA8, - 0xE40ECF0B, 0x9309FF9D, 0x0A00AE27, 0x7D079EB1, - 0xF00F9344, 0x8708A3D2, 0x1E01F268, 0x6906C2FE, - 0xF762575D, 0x806567CB, 0x196C3671, 0x6E6B06E7, - 0xFED41B76, 0x89D32BE0, 0x10DA7A5A, 0x67DD4ACC, - 0xF9B9DF6F, 0x8EBEEFF9, 0x17B7BE43, 0x60B08ED5, - 0xD6D6A3E8, 0xA1D1937E, 0x38D8C2C4, 0x4FDFF252, - 0xD1BB67F1, 0xA6BC5767, 0x3FB506DD, 0x48B2364B, - 0xD80D2BDA, 0xAF0A1B4C, 0x36034AF6, 0x41047A60, - 0xDF60EFC3, 0xA867DF55, 0x316E8EEF, 0x4669BE79, - 0xCB61B38C, 0xBC66831A, 0x256FD2A0, 0x5268E236, - 0xCC0C7795, 0xBB0B4703, 0x220216B9, 0x5505262F, - 0xC5BA3BBE, 0xB2BD0B28, 0x2BB45A92, 0x5CB36A04, - 0xC2D7FFA7, 0xB5D0CF31, 0x2CD99E8B, 0x5BDEAE1D, - 0x9B64C2B0, 0xEC63F226, 0x756AA39C, 0x026D930A, - 0x9C0906A9, 0xEB0E363F, 0x72076785, 0x05005713, - 0x95BF4A82, 0xE2B87A14, 0x7BB12BAE, 0x0CB61B38, - 0x92D28E9B, 0xE5D5BE0D, 0x7CDCEFB7, 0x0BDBDF21, - 0x86D3D2D4, 0xF1D4E242, 0x68DDB3F8, 0x1FDA836E, - 0x81BE16CD, 0xF6B9265B, 0x6FB077E1, 0x18B74777, - 0x88085AE6, 0xFF0F6A70, 0x66063BCA, 0x11010B5C, - 0x8F659EFF, 0xF862AE69, 0x616BFFD3, 0x166CCF45, - 0xA00AE278, 0xD70DD2EE, 0x4E048354, 0x3903B3C2, - 0xA7672661, 0xD06016F7, 0x4969474D, 0x3E6E77DB, - 0xAED16A4A, 0xD9D65ADC, 0x40DF0B66, 0x37D83BF0, - 0xA9BCAE53, 0xDEBB9EC5, 0x47B2CF7F, 0x30B5FFE9, - 0xBDBDF21C, 0xCABAC28A, 0x53B39330, 0x24B4A3A6, - 0xBAD03605, 0xCDD70693, 0x54DE5729, 0x23D967BF, - 0xB3667A2E, 0xC4614AB8, 0x5D681B02, 0x2A6F2B94, - 0xB40BBE37, 0xC30C8EA1, 0x5A05DF1B, 0x2D02EF8D - ); - - // For this function to yield the same output as PHP's crc32 function, $crc would have to be - // set to 0xFFFFFFFF, initially - not 0x00000000 as it currently is. - $crc = 0x00000000; - $length = strlen($data); - - for ($i=0; $i<$length; $i++) { - // We AND $crc >> 8 with 0x00FFFFFF because we want the eight newly added bits to all - // be zero. PHP, unfortunately, doesn't always do this. 0x80000000 >> 8, as an example, - // yields 0xFF800000 - not 0x00800000. The following link elaborates: - // http://www.php.net/manual/en/language.operators.bitwise.php#57281 - $crc = (($crc >> 8) & 0x00FFFFFF) ^ $crc_lookup_table[($crc & 0xFF) ^ ord($data[$i])]; - } - - // In addition to having to set $crc to 0xFFFFFFFF, initially, the return value must be XOR'd with - // 0xFFFFFFFF for this function to return the same thing that PHP's crc32 function would. - return $crc; - } - - /** - * String Shift - * - * Inspired by array_shift - * - * @param string $string - * @param int $index - * @return string - * @access private - */ - function _string_shift(&$string, $index = 1) - { - $substr = substr($string, 0, $index); - $string = substr($string, $index); - return $substr; - } - - /** - * RSA Encrypt - * - * Returns mod(pow($m, $e), $n), where $n should be the product of two (large) primes $p and $q and where $e - * should be a number with the property that gcd($e, ($p - 1) * ($q - 1)) == 1. Could just make anything that - * calls this call modexp, instead, but I think this makes things clearer, maybe... - * - * @see self::Net_SSH1() - * @param Math_BigInteger $m - * @param array $key - * @return Math_BigInteger - * @access private - */ - function _rsa_crypt($m, $key) - { - /* - if (!class_exists('Crypt_RSA')) { - include_once 'Crypt/RSA.php'; - } - - $rsa = new Crypt_RSA(); - $rsa->loadKey($key, CRYPT_RSA_PUBLIC_FORMAT_RAW); - $rsa->setEncryptionMode(CRYPT_RSA_ENCRYPTION_PKCS1); - return $rsa->encrypt($m); - */ - - // To quote from protocol-1.5.txt: - // The most significant byte (which is only partial as the value must be - // less than the public modulus, which is never a power of two) is zero. - // - // The next byte contains the value 2 (which stands for public-key - // encrypted data in the PKCS standard [PKCS#1]). Then, there are non- - // zero random bytes to fill any unused space, a zero byte, and the data - // to be encrypted in the least significant bytes, the last byte of the - // data in the least significant byte. - - // Presumably the part of PKCS#1 they're refering to is "Section 7.2.1 Encryption Operation", - // under "7.2 RSAES-PKCS1-v1.5" and "7 Encryption schemes" of the following URL: - // ftp://ftp.rsasecurity.com/pub/pkcs/pkcs-1/pkcs-1v2-1.pdf - $modulus = $key[1]->toBytes(); - $length = strlen($modulus) - strlen($m) - 3; - $random = ''; - while (strlen($random) != $length) { - $block = crypt_random_string($length - strlen($random)); - $block = str_replace("\x00", '', $block); - $random.= $block; - } - $temp = chr(0) . chr(2) . $random . chr(0) . $m; - - $m = new Math_BigInteger($temp, 256); - $m = $m->modPow($key[0], $key[1]); - - return $m->toBytes(); - } - - /** - * Define Array - * - * Takes any number of arrays whose indices are integers and whose values are strings and defines a bunch of - * named constants from it, using the value as the name of the constant and the index as the value of the constant. - * If any of the constants that would be defined already exists, none of the constants will be defined. - * - * @param array $array - * @access private - */ - function _define_array() - { - $args = func_get_args(); - foreach ($args as $arg) { - foreach ($arg as $key => $value) { - if (!defined($value)) { - define($value, $key); - } else { - break 2; - } - } - } - } - - /** - * Returns a log of the packets that have been sent and received. - * - * Returns a string if NET_SSH1_LOGGING == NET_SSH1_LOG_COMPLEX, an array if NET_SSH1_LOGGING == NET_SSH1_LOG_SIMPLE and false if !defined('NET_SSH1_LOGGING') - * - * @access public - * @return array|false|string - */ - function getLog() - { - if (!defined('NET_SSH1_LOGGING')) { - return false; - } - - switch (NET_SSH1_LOGGING) { - case NET_SSH1_LOG_SIMPLE: - return $this->message_number_log; - break; - case NET_SSH1_LOG_COMPLEX: - return $this->_format_log($this->message_log, $this->protocol_flags_log); - break; - default: - return false; - } - } - - /** - * Formats a log for printing - * - * @param array $message_log - * @param array $message_number_log - * @access private - * @return string - */ - function _format_log($message_log, $message_number_log) - { - $output = ''; - for ($i = 0; $i < count($message_log); $i++) { - $output.= $message_number_log[$i] . "\r\n"; - $current_log = $message_log[$i]; - $j = 0; - do { - if (strlen($current_log)) { - $output.= str_pad(dechex($j), 7, '0', STR_PAD_LEFT) . '0 '; - } - $fragment = $this->_string_shift($current_log, $this->log_short_width); - $hex = substr(preg_replace_callback('#.#s', array($this, '_format_log_helper'), $fragment), strlen($this->log_boundary)); - // replace non ASCII printable characters with dots - // http://en.wikipedia.org/wiki/ASCII#ASCII_printable_characters - // also replace < with a . since < messes up the output on web browsers - $raw = preg_replace('#[^\x20-\x7E]|<#', '.', $fragment); - $output.= str_pad($hex, $this->log_long_width - $this->log_short_width, ' ') . $raw . "\r\n"; - $j++; - } while (strlen($current_log)); - $output.= "\r\n"; - } - - return $output; - } - - /** - * Helper function for _format_log - * - * For use with preg_replace_callback() - * - * @param array $matches - * @access private - * @return string - */ - function _format_log_helper($matches) - { - return $this->log_boundary . str_pad(dechex(ord($matches[0])), 2, '0', STR_PAD_LEFT); - } - - /** - * Return the server key public exponent - * - * Returns, by default, the base-10 representation. If $raw_output is set to true, returns, instead, - * the raw bytes. This behavior is similar to PHP's md5() function. - * - * @param bool $raw_output - * @return string - * @access public - */ - function getServerKeyPublicExponent($raw_output = false) - { - return $raw_output ? $this->server_key_public_exponent->toBytes() : $this->server_key_public_exponent->toString(); - } - - /** - * Return the server key public modulus - * - * Returns, by default, the base-10 representation. If $raw_output is set to true, returns, instead, - * the raw bytes. This behavior is similar to PHP's md5() function. - * - * @param bool $raw_output - * @return string - * @access public - */ - function getServerKeyPublicModulus($raw_output = false) - { - return $raw_output ? $this->server_key_public_modulus->toBytes() : $this->server_key_public_modulus->toString(); - } - - /** - * Return the host key public exponent - * - * Returns, by default, the base-10 representation. If $raw_output is set to true, returns, instead, - * the raw bytes. This behavior is similar to PHP's md5() function. - * - * @param bool $raw_output - * @return string - * @access public - */ - function getHostKeyPublicExponent($raw_output = false) - { - return $raw_output ? $this->host_key_public_exponent->toBytes() : $this->host_key_public_exponent->toString(); - } - - /** - * Return the host key public modulus - * - * Returns, by default, the base-10 representation. If $raw_output is set to true, returns, instead, - * the raw bytes. This behavior is similar to PHP's md5() function. - * - * @param bool $raw_output - * @return string - * @access public - */ - function getHostKeyPublicModulus($raw_output = false) - { - return $raw_output ? $this->host_key_public_modulus->toBytes() : $this->host_key_public_modulus->toString(); - } - - /** - * Return a list of ciphers supported by SSH1 server. - * - * Just because a cipher is supported by an SSH1 server doesn't mean it's supported by this library. If $raw_output - * is set to true, returns, instead, an array of constants. ie. instead of array('Triple-DES in CBC mode'), you'll - * get array(NET_SSH1_CIPHER_3DES). - * - * @param bool $raw_output - * @return array - * @access public - */ - function getSupportedCiphers($raw_output = false) - { - return $raw_output ? array_keys($this->supported_ciphers) : array_values($this->supported_ciphers); - } - - /** - * Return a list of authentications supported by SSH1 server. - * - * Just because a cipher is supported by an SSH1 server doesn't mean it's supported by this library. If $raw_output - * is set to true, returns, instead, an array of constants. ie. instead of array('password authentication'), you'll - * get array(NET_SSH1_AUTH_PASSWORD). - * - * @param bool $raw_output - * @return array - * @access public - */ - function getSupportedAuthentications($raw_output = false) - { - return $raw_output ? array_keys($this->supported_authentications) : array_values($this->supported_authentications); - } - - /** - * Return the server identification. - * - * @return string - * @access public - */ - function getServerIdentification() - { - return rtrim($this->server_identification); - } - - /** - * Logs data packets - * - * Makes sure that only the last 1MB worth of packets will be logged - * - * @param string $data - * @access private - */ - function _append_log($protocol_flags, $message) - { - switch (NET_SSH1_LOGGING) { - // useful for benchmarks - case NET_SSH1_LOG_SIMPLE: - $this->protocol_flags_log[] = $protocol_flags; - break; - // the most useful log for SSH1 - case NET_SSH1_LOG_COMPLEX: - $this->protocol_flags_log[] = $protocol_flags; - $this->_string_shift($message); - $this->log_size+= strlen($message); - $this->message_log[] = $message; - while ($this->log_size > NET_SSH1_LOG_MAX_SIZE) { - $this->log_size-= strlen(array_shift($this->message_log)); - array_shift($this->protocol_flags_log); - } - break; - // dump the output out realtime; packets may be interspersed with non packets, - // passwords won't be filtered out and select other packets may not be correctly - // identified - case NET_SSH1_LOG_REALTIME: - echo "<pre>\r\n" . $this->_format_log(array($message), array($protocol_flags)) . "\r\n</pre>\r\n"; - @flush(); - @ob_flush(); - break; - // basically the same thing as NET_SSH1_LOG_REALTIME with the caveat that NET_SSH1_LOG_REALTIME_FILE - // needs to be defined and that the resultant log file will be capped out at NET_SSH1_LOG_MAX_SIZE. - // the earliest part of the log file is denoted by the first <<< START >>> and is not going to necessarily - // at the beginning of the file - case NET_SSH1_LOG_REALTIME_FILE: - if (!isset($this->realtime_log_file)) { - // PHP doesn't seem to like using constants in fopen() - $filename = NET_SSH1_LOG_REALTIME_FILE; - $fp = fopen($filename, 'w'); - $this->realtime_log_file = $fp; - } - if (!is_resource($this->realtime_log_file)) { - break; - } - $entry = $this->_format_log(array($message), array($protocol_flags)); - if ($this->realtime_log_wrap) { - $temp = "<<< START >>>\r\n"; - $entry.= $temp; - fseek($this->realtime_log_file, ftell($this->realtime_log_file) - strlen($temp)); - } - $this->realtime_log_size+= strlen($entry); - if ($this->realtime_log_size > NET_SSH1_LOG_MAX_SIZE) { - fseek($this->realtime_log_file, 0); - $this->realtime_log_size = strlen($entry); - $this->realtime_log_wrap = true; - } - fputs($this->realtime_log_file, $entry); - } - } -} diff --git a/libs/phpseclib-1.0.4/phpseclib/Net/SSH2.php b/libs/phpseclib-1.0.4/phpseclib/Net/SSH2.php deleted file mode 100644 index 8281e73..0000000 --- a/libs/phpseclib-1.0.4/phpseclib/Net/SSH2.php +++ /dev/null @@ -1,4292 +0,0 @@ -<?php - -/** - * Pure-PHP implementation of SSHv2. - * - * PHP versions 4 and 5 - * - * Here are some examples of how to use this library: - * <code> - * <?php - * include 'Net/SSH2.php'; - * - * $ssh = new Net_SSH2('www.domain.tld'); - * if (!$ssh->login('username', 'password')) { - * exit('Login Failed'); - * } - * - * echo $ssh->exec('pwd'); - * echo $ssh->exec('ls -la'); - * ?> - * </code> - * - * <code> - * <?php - * include 'Crypt/RSA.php'; - * include 'Net/SSH2.php'; - * - * $key = new Crypt_RSA(); - * //$key->setPassword('whatever'); - * $key->loadKey(file_get_contents('privatekey')); - * - * $ssh = new Net_SSH2('www.domain.tld'); - * if (!$ssh->login('username', $key)) { - * exit('Login Failed'); - * } - * - * echo $ssh->read('username@username:~$'); - * $ssh->write("ls -la\n"); - * echo $ssh->read('username@username:~$'); - * ?> - * </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_SSH2 - * @author Jim Wigginton <terrafrost@php.net> - * @copyright 2007 Jim Wigginton - * @license http://www.opensource.org/licenses/mit-license.html MIT License - * @link http://phpseclib.sourceforge.net - */ - -/**#@+ - * Execution Bitmap Masks - * - * @see self::bitmap - * @access private - */ -define('NET_SSH2_MASK_CONSTRUCTOR', 0x00000001); -define('NET_SSH2_MASK_CONNECTED', 0x00000002); -define('NET_SSH2_MASK_LOGIN_REQ', 0x00000004); -define('NET_SSH2_MASK_LOGIN', 0x00000008); -define('NET_SSH2_MASK_SHELL', 0x00000010); -define('NET_SSH2_MASK_WINDOW_ADJUST', 0x00000020); -/**#@-*/ - -/**#@+ - * Channel constants - * - * RFC4254 refers not to client and server channels but rather to sender and recipient channels. we don't refer - * to them in that way because RFC4254 toggles the meaning. the client sends a SSH_MSG_CHANNEL_OPEN message with - * a sender channel and the server sends a SSH_MSG_CHANNEL_OPEN_CONFIRMATION in response, with a sender and a - * recepient channel. at first glance, you might conclude that SSH_MSG_CHANNEL_OPEN_CONFIRMATION's sender channel - * would be the same thing as SSH_MSG_CHANNEL_OPEN's sender channel, but it's not, per this snipet: - * The 'recipient channel' is the channel number given in the original - * open request, and 'sender channel' is the channel number allocated by - * the other side. - * - * @see self::_send_channel_packet() - * @see self::_get_channel_packet() - * @access private - */ -define('NET_SSH2_CHANNEL_EXEC', 0); // PuTTy uses 0x100 -define('NET_SSH2_CHANNEL_SHELL', 1); -define('NET_SSH2_CHANNEL_SUBSYSTEM', 2); -define('NET_SSH2_CHANNEL_AGENT_FORWARD', 3); -/**#@-*/ - -/**#@+ - * @access public - * @see self::getLog() - */ -/** - * Returns the message numbers - */ -define('NET_SSH2_LOG_SIMPLE', 1); -/** - * Returns the message content - */ -define('NET_SSH2_LOG_COMPLEX', 2); -/** - * Outputs the content real-time - */ -define('NET_SSH2_LOG_REALTIME', 3); -/** - * Dumps the content real-time to a file - */ -define('NET_SSH2_LOG_REALTIME_FILE', 4); -/**#@-*/ - -/**#@+ - * @access public - * @see self::read() - */ -/** - * Returns when a string matching $expect exactly is found - */ -define('NET_SSH2_READ_SIMPLE', 1); -/** - * Returns when a string matching the regular expression $expect is found - */ -define('NET_SSH2_READ_REGEX', 2); -/** - * Make sure that the log never gets larger than this - */ -define('NET_SSH2_LOG_MAX_SIZE', 1024 * 1024); -/**#@-*/ - -/** - * Pure-PHP implementation of SSHv2. - * - * @package Net_SSH2 - * @author Jim Wigginton <terrafrost@php.net> - * @access public - */ -class Net_SSH2 -{ - /** - * The SSH identifier - * - * @var string - * @access private - */ - var $identifier; - - /** - * The Socket Object - * - * @var object - * @access private - */ - var $fsock; - - /** - * Execution Bitmap - * - * The bits that are set represent functions that have been called already. This is used to determine - * if a requisite function has been successfully executed. If not, an error should be thrown. - * - * @var int - * @access private - */ - var $bitmap = 0; - - /** - * Error information - * - * @see self::getErrors() - * @see self::getLastError() - * @var string - * @access private - */ - var $errors = array(); - - /** - * Server Identifier - * - * @see self::getServerIdentification() - * @var array|false - * @access private - */ - var $server_identifier = false; - - /** - * Key Exchange Algorithms - * - * @see self::getKexAlgorithims() - * @var array|false - * @access private - */ - var $kex_algorithms = false; - - /** - * Minimum Diffie-Hellman Group Bit Size in RFC 4419 Key Exchange Methods - * - * @see self::_key_exchange() - * @var int - * @access private - */ - var $kex_dh_group_size_min = 1536; - - /** - * Preferred Diffie-Hellman Group Bit Size in RFC 4419 Key Exchange Methods - * - * @see self::_key_exchange() - * @var int - * @access private - */ - var $kex_dh_group_size_preferred = 2048; - - /** - * Maximum Diffie-Hellman Group Bit Size in RFC 4419 Key Exchange Methods - * - * @see self::_key_exchange() - * @var int - * @access private - */ - var $kex_dh_group_size_max = 4096; - - /** - * Server Host Key Algorithms - * - * @see self::getServerHostKeyAlgorithms() - * @var array|false - * @access private - */ - var $server_host_key_algorithms = false; - - /** - * Encryption Algorithms: Client to Server - * - * @see self::getEncryptionAlgorithmsClient2Server() - * @var array|false - * @access private - */ - var $encryption_algorithms_client_to_server = false; - - /** - * Encryption Algorithms: Server to Client - * - * @see self::getEncryptionAlgorithmsServer2Client() - * @var array|false - * @access private - */ - var $encryption_algorithms_server_to_client = false; - - /** - * MAC Algorithms: Client to Server - * - * @see self::getMACAlgorithmsClient2Server() - * @var array|false - * @access private - */ - var $mac_algorithms_client_to_server = false; - - /** - * MAC Algorithms: Server to Client - * - * @see self::getMACAlgorithmsServer2Client() - * @var array|false - * @access private - */ - var $mac_algorithms_server_to_client = false; - - /** - * Compression Algorithms: Client to Server - * - * @see self::getCompressionAlgorithmsClient2Server() - * @var array|false - * @access private - */ - var $compression_algorithms_client_to_server = false; - - /** - * Compression Algorithms: Server to Client - * - * @see self::getCompressionAlgorithmsServer2Client() - * @var array|false - * @access private - */ - var $compression_algorithms_server_to_client = false; - - /** - * Languages: Server to Client - * - * @see self::getLanguagesServer2Client() - * @var array|false - * @access private - */ - var $languages_server_to_client = false; - - /** - * Languages: Client to Server - * - * @see self::getLanguagesClient2Server() - * @var array|false - * @access private - */ - var $languages_client_to_server = false; - - /** - * Block Size for Server to Client Encryption - * - * "Note that the length of the concatenation of 'packet_length', - * 'padding_length', 'payload', and 'random padding' MUST be a multiple - * of the cipher block size or 8, whichever is larger. This constraint - * MUST be enforced, even when using stream ciphers." - * - * -- http://tools.ietf.org/html/rfc4253#section-6 - * - * @see self::Net_SSH2() - * @see self::_send_binary_packet() - * @var int - * @access private - */ - var $encrypt_block_size = 8; - - /** - * Block Size for Client to Server Encryption - * - * @see self::Net_SSH2() - * @see self::_get_binary_packet() - * @var int - * @access private - */ - var $decrypt_block_size = 8; - - /** - * Server to Client Encryption Object - * - * @see self::_get_binary_packet() - * @var object - * @access private - */ - var $decrypt = false; - - /** - * Client to Server Encryption Object - * - * @see self::_send_binary_packet() - * @var object - * @access private - */ - var $encrypt = false; - - /** - * Client to Server HMAC Object - * - * @see self::_send_binary_packet() - * @var object - * @access private - */ - var $hmac_create = false; - - /** - * Server to Client HMAC Object - * - * @see self::_get_binary_packet() - * @var object - * @access private - */ - var $hmac_check = false; - - /** - * Size of server to client HMAC - * - * We need to know how big the HMAC will be for the server to client direction so that we know how many bytes to read. - * For the client to server side, the HMAC object will make the HMAC as long as it needs to be. All we need to do is - * append it. - * - * @see self::_get_binary_packet() - * @var int - * @access private - */ - var $hmac_size = false; - - /** - * Server Public Host Key - * - * @see self::getServerPublicHostKey() - * @var string - * @access private - */ - var $server_public_host_key; - - /** - * Session identifier - * - * "The exchange hash H from the first key exchange is additionally - * used as the session identifier, which is a unique identifier for - * this connection." - * - * -- http://tools.ietf.org/html/rfc4253#section-7.2 - * - * @see self::_key_exchange() - * @var string - * @access private - */ - var $session_id = false; - - /** - * Exchange hash - * - * The current exchange hash - * - * @see self::_key_exchange() - * @var string - * @access private - */ - var $exchange_hash = false; - - /** - * Message Numbers - * - * @see self::Net_SSH2() - * @var array - * @access private - */ - var $message_numbers = array(); - - /** - * Disconnection Message 'reason codes' defined in RFC4253 - * - * @see self::Net_SSH2() - * @var array - * @access private - */ - var $disconnect_reasons = array(); - - /** - * SSH_MSG_CHANNEL_OPEN_FAILURE 'reason codes', defined in RFC4254 - * - * @see self::Net_SSH2() - * @var array - * @access private - */ - var $channel_open_failure_reasons = array(); - - /** - * Terminal Modes - * - * @link http://tools.ietf.org/html/rfc4254#section-8 - * @see self::Net_SSH2() - * @var array - * @access private - */ - var $terminal_modes = array(); - - /** - * SSH_MSG_CHANNEL_EXTENDED_DATA's data_type_codes - * - * @link http://tools.ietf.org/html/rfc4254#section-5.2 - * @see self::Net_SSH2() - * @var array - * @access private - */ - var $channel_extended_data_type_codes = array(); - - /** - * Send Sequence Number - * - * See 'Section 6.4. Data Integrity' of rfc4253 for more info. - * - * @see self::_send_binary_packet() - * @var int - * @access private - */ - var $send_seq_no = 0; - - /** - * Get Sequence Number - * - * See 'Section 6.4. Data Integrity' of rfc4253 for more info. - * - * @see self::_get_binary_packet() - * @var int - * @access private - */ - var $get_seq_no = 0; - - /** - * Server Channels - * - * Maps client channels to server channels - * - * @see self::_get_channel_packet() - * @see self::exec() - * @var array - * @access private - */ - var $server_channels = array(); - - /** - * Channel Buffers - * - * If a client requests a packet from one channel but receives two packets from another those packets should - * be placed in a buffer - * - * @see self::_get_channel_packet() - * @see self::exec() - * @var array - * @access private - */ - var $channel_buffers = array(); - - /** - * Channel Status - * - * Contains the type of the last sent message - * - * @see self::_get_channel_packet() - * @var array - * @access private - */ - var $channel_status = array(); - - /** - * Packet Size - * - * Maximum packet size indexed by channel - * - * @see self::_send_channel_packet() - * @var array - * @access private - */ - var $packet_size_client_to_server = array(); - - /** - * Message Number Log - * - * @see self::getLog() - * @var array - * @access private - */ - var $message_number_log = array(); - - /** - * Message Log - * - * @see self::getLog() - * @var array - * @access private - */ - var $message_log = array(); - - /** - * The Window Size - * - * Bytes the other party can send before it must wait for the window to be adjusted (0x7FFFFFFF = 2GB) - * - * @var int - * @see self::_send_channel_packet() - * @see self::exec() - * @access private - */ - var $window_size = 0x7FFFFFFF; - - /** - * Window size, server to client - * - * Window size indexed by channel - * - * @see self::_send_channel_packet() - * @var array - * @access private - */ - var $window_size_server_to_client = array(); - - /** - * Window size, client to server - * - * Window size indexed by channel - * - * @see self::_get_channel_packet() - * @var array - * @access private - */ - var $window_size_client_to_server = array(); - - /** - * Server signature - * - * Verified against $this->session_id - * - * @see self::getServerPublicHostKey() - * @var string - * @access private - */ - var $signature = ''; - - /** - * Server signature format - * - * ssh-rsa or ssh-dss. - * - * @see self::getServerPublicHostKey() - * @var string - * @access private - */ - var $signature_format = ''; - - /** - * Interactive Buffer - * - * @see self::read() - * @var array - * @access private - */ - var $interactiveBuffer = ''; - - /** - * Current log size - * - * Should never exceed NET_SSH2_LOG_MAX_SIZE - * - * @see self::_send_binary_packet() - * @see self::_get_binary_packet() - * @var int - * @access private - */ - var $log_size; - - /** - * Timeout - * - * @see self::setTimeout() - * @access private - */ - var $timeout; - - /** - * Current Timeout - * - * @see self::_get_channel_packet() - * @access private - */ - var $curTimeout; - - /** - * Real-time log file pointer - * - * @see self::_append_log() - * @var resource - * @access private - */ - var $realtime_log_file; - - /** - * Real-time log file size - * - * @see self::_append_log() - * @var int - * @access private - */ - var $realtime_log_size; - - /** - * Has the signature been validated? - * - * @see self::getServerPublicHostKey() - * @var bool - * @access private - */ - var $signature_validated = false; - - /** - * Real-time log file wrap boolean - * - * @see self::_append_log() - * @access private - */ - var $realtime_log_wrap; - - /** - * Flag to suppress stderr from output - * - * @see self::enableQuietMode() - * @access private - */ - var $quiet_mode = false; - - /** - * Time of first network activity - * - * @var int - * @access private - */ - var $last_packet; - - /** - * Exit status returned from ssh if any - * - * @var int - * @access private - */ - var $exit_status; - - /** - * Flag to request a PTY when using exec() - * - * @var bool - * @see self::enablePTY() - * @access private - */ - var $request_pty = false; - - /** - * Flag set while exec() is running when using enablePTY() - * - * @var bool - * @access private - */ - var $in_request_pty_exec = false; - - /** - * Flag set after startSubsystem() is called - * - * @var bool - * @access private - */ - var $in_subsystem; - - /** - * Contents of stdError - * - * @var string - * @access private - */ - var $stdErrorLog; - - /** - * The Last Interactive Response - * - * @see self::_keyboard_interactive_process() - * @var string - * @access private - */ - var $last_interactive_response = ''; - - /** - * Keyboard Interactive Request / Responses - * - * @see self::_keyboard_interactive_process() - * @var array - * @access private - */ - var $keyboard_requests_responses = array(); - - /** - * Banner Message - * - * Quoting from the RFC, "in some jurisdictions, sending a warning message before - * authentication may be relevant for getting legal protection." - * - * @see self::_filter() - * @see self::getBannerMessage() - * @var string - * @access private - */ - var $banner_message = ''; - - /** - * Did read() timeout or return normally? - * - * @see self::isTimeout() - * @var bool - * @access private - */ - var $is_timeout = false; - - /** - * Log Boundary - * - * @see self::_format_log() - * @var string - * @access private - */ - var $log_boundary = ':'; - - /** - * Log Long Width - * - * @see self::_format_log() - * @var int - * @access private - */ - var $log_long_width = 65; - - /** - * Log Short Width - * - * @see self::_format_log() - * @var int - * @access private - */ - var $log_short_width = 16; - - /** - * Hostname - * - * @see self::Net_SSH2() - * @see self::_connect() - * @var string - * @access private - */ - var $host; - - /** - * Port Number - * - * @see self::Net_SSH2() - * @see self::_connect() - * @var int - * @access private - */ - var $port; - - /** - * Number of columns for terminal window size - * - * @see self::getWindowColumns() - * @see self::setWindowColumns() - * @see self::setWindowSize() - * @var int - * @access private - */ - var $windowColumns = 80; - - /** - * Number of columns for terminal window size - * - * @see self::getWindowRows() - * @see self::setWindowRows() - * @see self::setWindowSize() - * @var int - * @access private - */ - var $windowRows = 24; - - /** - * Crypto Engine - * - * @see self::setCryptoEngine() - * @see self::_key_exchange() - * @var int - * @access private - */ - var $crypto_engine = false; - - /** - * A System_SSH_Agent for use in the SSH2 Agent Forwarding scenario - * - * @var System_SSH_Agent - * @access private - */ - var $agent; - - /** - * Default Constructor. - * - * $host can either be a string, representing the host, or a stream resource. - * - * @param mixed $host - * @param int $port - * @param int $timeout - * @see self::login() - * @return Net_SSH2 - * @access public - */ - function __construct($host, $port = 22, $timeout = 10) - { - // Include Math_BigInteger - // Used to do Diffie-Hellman key exchange and DSA/RSA signature verification. - if (!class_exists('Math_BigInteger')) { - include_once 'Math/BigInteger.php'; - } - - if (!function_exists('crypt_random_string')) { - include_once 'Crypt/Random.php'; - } - - if (!class_exists('Crypt_Hash')) { - include_once 'Crypt/Hash.php'; - } - - // include Crypt_Base so constants can be defined for setCryptoEngine() - if (!class_exists('Crypt_Base')) { - include_once 'Crypt/Base.php'; - } - - $this->message_numbers = array( - 1 => 'NET_SSH2_MSG_DISCONNECT', - 2 => 'NET_SSH2_MSG_IGNORE', - 3 => 'NET_SSH2_MSG_UNIMPLEMENTED', - 4 => 'NET_SSH2_MSG_DEBUG', - 5 => 'NET_SSH2_MSG_SERVICE_REQUEST', - 6 => 'NET_SSH2_MSG_SERVICE_ACCEPT', - 20 => 'NET_SSH2_MSG_KEXINIT', - 21 => 'NET_SSH2_MSG_NEWKEYS', - 30 => 'NET_SSH2_MSG_KEXDH_INIT', - 31 => 'NET_SSH2_MSG_KEXDH_REPLY', - 50 => 'NET_SSH2_MSG_USERAUTH_REQUEST', - 51 => 'NET_SSH2_MSG_USERAUTH_FAILURE', - 52 => 'NET_SSH2_MSG_USERAUTH_SUCCESS', - 53 => 'NET_SSH2_MSG_USERAUTH_BANNER', - - 80 => 'NET_SSH2_MSG_GLOBAL_REQUEST', - 81 => 'NET_SSH2_MSG_REQUEST_SUCCESS', - 82 => 'NET_SSH2_MSG_REQUEST_FAILURE', - 90 => 'NET_SSH2_MSG_CHANNEL_OPEN', - 91 => 'NET_SSH2_MSG_CHANNEL_OPEN_CONFIRMATION', - 92 => 'NET_SSH2_MSG_CHANNEL_OPEN_FAILURE', - 93 => 'NET_SSH2_MSG_CHANNEL_WINDOW_ADJUST', - 94 => 'NET_SSH2_MSG_CHANNEL_DATA', - 95 => 'NET_SSH2_MSG_CHANNEL_EXTENDED_DATA', - 96 => 'NET_SSH2_MSG_CHANNEL_EOF', - 97 => 'NET_SSH2_MSG_CHANNEL_CLOSE', - 98 => 'NET_SSH2_MSG_CHANNEL_REQUEST', - 99 => 'NET_SSH2_MSG_CHANNEL_SUCCESS', - 100 => 'NET_SSH2_MSG_CHANNEL_FAILURE' - ); - $this->disconnect_reasons = array( - 1 => 'NET_SSH2_DISCONNECT_HOST_NOT_ALLOWED_TO_CONNECT', - 2 => 'NET_SSH2_DISCONNECT_PROTOCOL_ERROR', - 3 => 'NET_SSH2_DISCONNECT_KEY_EXCHANGE_FAILED', - 4 => 'NET_SSH2_DISCONNECT_RESERVED', - 5 => 'NET_SSH2_DISCONNECT_MAC_ERROR', - 6 => 'NET_SSH2_DISCONNECT_COMPRESSION_ERROR', - 7 => 'NET_SSH2_DISCONNECT_SERVICE_NOT_AVAILABLE', - 8 => 'NET_SSH2_DISCONNECT_PROTOCOL_VERSION_NOT_SUPPORTED', - 9 => 'NET_SSH2_DISCONNECT_HOST_KEY_NOT_VERIFIABLE', - 10 => 'NET_SSH2_DISCONNECT_CONNECTION_LOST', - 11 => 'NET_SSH2_DISCONNECT_BY_APPLICATION', - 12 => 'NET_SSH2_DISCONNECT_TOO_MANY_CONNECTIONS', - 13 => 'NET_SSH2_DISCONNECT_AUTH_CANCELLED_BY_USER', - 14 => 'NET_SSH2_DISCONNECT_NO_MORE_AUTH_METHODS_AVAILABLE', - 15 => 'NET_SSH2_DISCONNECT_ILLEGAL_USER_NAME' - ); - $this->channel_open_failure_reasons = array( - 1 => 'NET_SSH2_OPEN_ADMINISTRATIVELY_PROHIBITED' - ); - $this->terminal_modes = array( - 0 => 'NET_SSH2_TTY_OP_END' - ); - $this->channel_extended_data_type_codes = array( - 1 => 'NET_SSH2_EXTENDED_DATA_STDERR' - ); - - $this->_define_array( - $this->message_numbers, - $this->disconnect_reasons, - $this->channel_open_failure_reasons, - $this->terminal_modes, - $this->channel_extended_data_type_codes, - array(60 => 'NET_SSH2_MSG_USERAUTH_PASSWD_CHANGEREQ'), - array(60 => 'NET_SSH2_MSG_USERAUTH_PK_OK'), - array(60 => 'NET_SSH2_MSG_USERAUTH_INFO_REQUEST', - 61 => 'NET_SSH2_MSG_USERAUTH_INFO_RESPONSE'), - // RFC 4419 - diffie-hellman-group-exchange-sha{1,256} - array(30 => 'NET_SSH2_MSG_KEXDH_GEX_REQUEST_OLD', - 31 => 'NET_SSH2_MSG_KEXDH_GEX_GROUP', - 32 => 'NET_SSH2_MSG_KEXDH_GEX_INIT', - 33 => 'NET_SSH2_MSG_KEXDH_GEX_REPLY', - 34 => 'NET_SSH2_MSG_KEXDH_GEX_REQUEST') - ); - - if (is_resource($host)) { - $this->fsock = $host; - return; - } - - if (is_string($host)) { - $this->host = $host; - $this->port = $port; - $this->timeout = $timeout; - } - } - - /** - * PHP4 compatible Default Constructor. - * - * @see self::__construct() - * @param mixed $host - * @param int $port - * @param int $timeout - * @access public - */ - function Net_SSH2($host, $port = 22, $timeout = 10) - { - $this->__construct($host, $port, $timeout); - } - - /** - * Set Crypto Engine Mode - * - * Possible $engine values: - * CRYPT_MODE_INTERNAL, CRYPT_MODE_MCRYPT - * - * @param int $engine - * @access private - */ - function setCryptoEngine($engine) - { - $this->crypto_engine = $engine; - } - - /** - * Connect to an SSHv2 server - * - * @return bool - * @access private - */ - function _connect() - { - if ($this->bitmap & NET_SSH2_MASK_CONSTRUCTOR) { - return false; - } - - $this->bitmap |= NET_SSH2_MASK_CONSTRUCTOR; - - $this->curTimeout = $this->timeout; - - $this->last_packet = strtok(microtime(), ' ') + strtok(''); // == microtime(true) in PHP5 - - if (!is_resource($this->fsock)) { - $start = strtok(microtime(), ' ') + strtok(''); // http://php.net/microtime#61838 - $this->fsock = @fsockopen($this->host, $this->port, $errno, $errstr, $this->curTimeout); - if (!$this->fsock) { - $host = $this->host . ':' . $this->port; - user_error(rtrim("Cannot connect to $host. Error $errno. $errstr")); - return false; - } - $elapsed = strtok(microtime(), ' ') + strtok('') - $start; - - $this->curTimeout-= $elapsed; - - if ($this->curTimeout <= 0) { - $this->is_timeout = true; - return false; - } - } - - /* According to the SSH2 specs, - - "The server MAY send other lines of data before sending the version - string. Each line SHOULD be terminated by a Carriage Return and Line - Feed. Such lines MUST NOT begin with "SSH-", and SHOULD be encoded - in ISO-10646 UTF-8 [RFC3629] (language is not specified). Clients - MUST be able to process such lines." */ - $temp = ''; - $extra = ''; - while (!feof($this->fsock) && !preg_match('#^SSH-(\d\.\d+)#', $temp, $matches)) { - if (substr($temp, -2) == "\r\n") { - $extra.= $temp; - $temp = ''; - } - - if ($this->curTimeout) { - if ($this->curTimeout < 0) { - $this->is_timeout = true; - return false; - } - $read = array($this->fsock); - $write = $except = null; - $start = strtok(microtime(), ' ') + strtok(''); - $sec = floor($this->curTimeout); - $usec = 1000000 * ($this->curTimeout - $sec); - // on windows this returns a "Warning: Invalid CRT parameters detected" error - // the !count() is done as a workaround for <https://bugs.php.net/42682> - if (!@stream_select($read, $write, $except, $sec, $usec) && !count($read)) { - $this->is_timeout = true; - return false; - } - $elapsed = strtok(microtime(), ' ') + strtok('') - $start; - $this->curTimeout-= $elapsed; - } - - $temp.= fgets($this->fsock, 255); - } - - if (feof($this->fsock)) { - user_error('Connection closed by server'); - return false; - } - - $this->identifier = $this->_generate_identifier(); - - if (defined('NET_SSH2_LOGGING')) { - $this->_append_log('<-', $extra . $temp); - $this->_append_log('->', $this->identifier . "\r\n"); - } - - $this->server_identifier = trim($temp, "\r\n"); - if (strlen($extra)) { - $this->errors[] = utf8_decode($extra); - } - - if ($matches[1] != '1.99' && $matches[1] != '2.0') { - user_error("Cannot connect to SSH $matches[1] servers"); - return false; - } - - fputs($this->fsock, $this->identifier . "\r\n"); - - $response = $this->_get_binary_packet(); - if ($response === false) { - user_error('Connection closed by server'); - return false; - } - - if (ord($response[0]) != NET_SSH2_MSG_KEXINIT) { - user_error('Expected SSH_MSG_KEXINIT'); - return false; - } - - if (!$this->_key_exchange($response)) { - return false; - } - - $this->bitmap|= NET_SSH2_MASK_CONNECTED; - - return true; - } - - /** - * Generates the SSH identifier - * - * You should overwrite this method in your own class if you want to use another identifier - * - * @access protected - * @return string - */ - function _generate_identifier() - { - $identifier = 'SSH-2.0-phpseclib_1.0'; - - $ext = array(); - if (extension_loaded('openssl')) { - $ext[] = 'openssl'; - } elseif (extension_loaded('mcrypt')) { - $ext[] = 'mcrypt'; - } - - if (extension_loaded('gmp')) { - $ext[] = 'gmp'; - } elseif (extension_loaded('bcmath')) { - $ext[] = 'bcmath'; - } - - if (!empty($ext)) { - $identifier .= ' (' . implode(', ', $ext) . ')'; - } - - return $identifier; - } - - /** - * Key Exchange - * - * @param string $kexinit_payload_server - * @access private - */ - function _key_exchange($kexinit_payload_server) - { - static $kex_algorithms = array( - 'diffie-hellman-group1-sha1', // REQUIRED - 'diffie-hellman-group14-sha1', // REQUIRED - 'diffie-hellman-group-exchange-sha1', // RFC 4419 - 'diffie-hellman-group-exchange-sha256', // RFC 4419 - ); - - static $server_host_key_algorithms = array( - 'ssh-rsa', // RECOMMENDED sign Raw RSA Key - 'ssh-dss' // REQUIRED sign Raw DSS Key - ); - - static $encryption_algorithms = false; - if ($encryption_algorithms === false) { - $encryption_algorithms = array( - // from <http://tools.ietf.org/html/rfc4345#section-4>: - 'arcfour256', - 'arcfour128', - - //'arcfour', // OPTIONAL the ARCFOUR stream cipher with a 128-bit key - - // CTR modes from <http://tools.ietf.org/html/rfc4344#section-4>: - 'aes128-ctr', // RECOMMENDED AES (Rijndael) in SDCTR mode, with 128-bit key - 'aes192-ctr', // RECOMMENDED AES with 192-bit key - 'aes256-ctr', // RECOMMENDED AES with 256-bit key - - 'twofish128-ctr', // OPTIONAL Twofish in SDCTR mode, with 128-bit key - 'twofish192-ctr', // OPTIONAL Twofish with 192-bit key - 'twofish256-ctr', // OPTIONAL Twofish with 256-bit key - - 'aes128-cbc', // RECOMMENDED AES with a 128-bit key - 'aes192-cbc', // OPTIONAL AES with a 192-bit key - 'aes256-cbc', // OPTIONAL AES in CBC mode, with a 256-bit key - - 'twofish128-cbc', // OPTIONAL Twofish with a 128-bit key - 'twofish192-cbc', // OPTIONAL Twofish with a 192-bit key - 'twofish256-cbc', - 'twofish-cbc', // OPTIONAL alias for "twofish256-cbc" - // (this is being retained for historical reasons) - - 'blowfish-ctr', // OPTIONAL Blowfish in SDCTR mode - - 'blowfish-cbc', // OPTIONAL Blowfish in CBC mode - - '3des-ctr', // RECOMMENDED Three-key 3DES in SDCTR mode - - '3des-cbc', // REQUIRED three-key 3DES in CBC mode - //'none' // OPTIONAL no encryption; NOT RECOMMENDED - ); - - if (extension_loaded('openssl') && !extension_loaded('mcrypt')) { - // OpenSSL does not support arcfour256 in any capacity and arcfour128 / arcfour support is limited to - // instances that do not use continuous buffers - $encryption_algorithms = array_diff( - $encryption_algorithms, - array('arcfour256', 'arcfour128', 'arcfour') - ); - } - - if (phpseclib_resolve_include_path('Crypt/RC4.php') === false) { - $encryption_algorithms = array_diff( - $encryption_algorithms, - array('arcfour256', 'arcfour128', 'arcfour') - ); - } - if (phpseclib_resolve_include_path('Crypt/Rijndael.php') === false) { - $encryption_algorithms = array_diff( - $encryption_algorithms, - array('aes128-ctr', 'aes192-ctr', 'aes256-ctr', 'aes128-cbc', 'aes192-cbc', 'aes256-cbc') - ); - } - if (phpseclib_resolve_include_path('Crypt/Twofish.php') === false) { - $encryption_algorithms = array_diff( - $encryption_algorithms, - array('twofish128-ctr', 'twofish192-ctr', 'twofish256-ctr', 'twofish128-cbc', 'twofish192-cbc', 'twofish256-cbc', 'twofish-cbc') - ); - } - if (phpseclib_resolve_include_path('Crypt/Blowfish.php') === false) { - $encryption_algorithms = array_diff( - $encryption_algorithms, - array('blowfish-ctr', 'blowfish-cbc') - ); - } - if (phpseclib_resolve_include_path('Crypt/TripleDES.php') === false) { - $encryption_algorithms = array_diff( - $encryption_algorithms, - array('3des-ctr', '3des-cbc') - ); - } - $encryption_algorithms = array_values($encryption_algorithms); - } - - $mac_algorithms = array( - // from <http://www.ietf.org/rfc/rfc6668.txt>: - 'hmac-sha2-256',// RECOMMENDED HMAC-SHA256 (digest length = key length = 32) - - 'hmac-sha1-96', // RECOMMENDED first 96 bits of HMAC-SHA1 (digest length = 12, key length = 20) - 'hmac-sha1', // REQUIRED HMAC-SHA1 (digest length = key length = 20) - 'hmac-md5-96', // OPTIONAL first 96 bits of HMAC-MD5 (digest length = 12, key length = 16) - 'hmac-md5', // OPTIONAL HMAC-MD5 (digest length = key length = 16) - //'none' // OPTIONAL no MAC; NOT RECOMMENDED - ); - - static $compression_algorithms = array( - 'none' // REQUIRED no compression - //'zlib' // OPTIONAL ZLIB (LZ77) compression - ); - - // some SSH servers have buggy implementations of some of the above algorithms - switch ($this->server_identifier) { - case 'SSH-2.0-SSHD': - $mac_algorithms = array_values(array_diff( - $mac_algorithms, - array('hmac-sha1-96', 'hmac-md5-96') - )); - } - - static $str_kex_algorithms, $str_server_host_key_algorithms, - $encryption_algorithms_server_to_client, $mac_algorithms_server_to_client, $compression_algorithms_server_to_client, - $encryption_algorithms_client_to_server, $mac_algorithms_client_to_server, $compression_algorithms_client_to_server; - - if (empty($str_kex_algorithms)) { - $str_kex_algorithms = implode(',', $kex_algorithms); - $str_server_host_key_algorithms = implode(',', $server_host_key_algorithms); - $encryption_algorithms_server_to_client = $encryption_algorithms_client_to_server = implode(',', $encryption_algorithms); - $mac_algorithms_server_to_client = $mac_algorithms_client_to_server = implode(',', $mac_algorithms); - $compression_algorithms_server_to_client = $compression_algorithms_client_to_server = implode(',', $compression_algorithms); - } - - $client_cookie = crypt_random_string(16); - - $response = $kexinit_payload_server; - $this->_string_shift($response, 1); // skip past the message number (it should be SSH_MSG_KEXINIT) - $server_cookie = $this->_string_shift($response, 16); - - $temp = unpack('Nlength', $this->_string_shift($response, 4)); - $this->kex_algorithms = explode(',', $this->_string_shift($response, $temp['length'])); - - $temp = unpack('Nlength', $this->_string_shift($response, 4)); - $this->server_host_key_algorithms = explode(',', $this->_string_shift($response, $temp['length'])); - - $temp = unpack('Nlength', $this->_string_shift($response, 4)); - $this->encryption_algorithms_client_to_server = explode(',', $this->_string_shift($response, $temp['length'])); - - $temp = unpack('Nlength', $this->_string_shift($response, 4)); - $this->encryption_algorithms_server_to_client = explode(',', $this->_string_shift($response, $temp['length'])); - - $temp = unpack('Nlength', $this->_string_shift($response, 4)); - $this->mac_algorithms_client_to_server = explode(',', $this->_string_shift($response, $temp['length'])); - - $temp = unpack('Nlength', $this->_string_shift($response, 4)); - $this->mac_algorithms_server_to_client = explode(',', $this->_string_shift($response, $temp['length'])); - - $temp = unpack('Nlength', $this->_string_shift($response, 4)); - $this->compression_algorithms_client_to_server = explode(',', $this->_string_shift($response, $temp['length'])); - - $temp = unpack('Nlength', $this->_string_shift($response, 4)); - $this->compression_algorithms_server_to_client = explode(',', $this->_string_shift($response, $temp['length'])); - - $temp = unpack('Nlength', $this->_string_shift($response, 4)); - $this->languages_client_to_server = explode(',', $this->_string_shift($response, $temp['length'])); - - $temp = unpack('Nlength', $this->_string_shift($response, 4)); - $this->languages_server_to_client = explode(',', $this->_string_shift($response, $temp['length'])); - - extract(unpack('Cfirst_kex_packet_follows', $this->_string_shift($response, 1))); - $first_kex_packet_follows = $first_kex_packet_follows != 0; - - // the sending of SSH2_MSG_KEXINIT could go in one of two places. this is the second place. - $kexinit_payload_client = pack( - 'Ca*Na*Na*Na*Na*Na*Na*Na*Na*Na*Na*CN', - NET_SSH2_MSG_KEXINIT, - $client_cookie, - strlen($str_kex_algorithms), - $str_kex_algorithms, - strlen($str_server_host_key_algorithms), - $str_server_host_key_algorithms, - strlen($encryption_algorithms_client_to_server), - $encryption_algorithms_client_to_server, - strlen($encryption_algorithms_server_to_client), - $encryption_algorithms_server_to_client, - strlen($mac_algorithms_client_to_server), - $mac_algorithms_client_to_server, - strlen($mac_algorithms_server_to_client), - $mac_algorithms_server_to_client, - strlen($compression_algorithms_client_to_server), - $compression_algorithms_client_to_server, - strlen($compression_algorithms_server_to_client), - $compression_algorithms_server_to_client, - 0, - '', - 0, - '', - 0, - 0 - ); - - if (!$this->_send_binary_packet($kexinit_payload_client)) { - return false; - } - // here ends the second place. - - // we need to decide upon the symmetric encryption algorithms before we do the diffie-hellman key exchange - // we don't initialize any crypto-objects, yet - we do that, later. for now, we need the lengths to make the - // diffie-hellman key exchange as fast as possible - $decrypt = $this->_array_intersect_first($encryption_algorithms, $this->encryption_algorithms_server_to_client); - $decryptKeyLength = $this->_encryption_algorithm_to_key_size($decrypt); - if ($decryptKeyLength === null) { - user_error('No compatible server to client encryption algorithms found'); - return $this->_disconnect(NET_SSH2_DISCONNECT_KEY_EXCHANGE_FAILED); - } - - $encrypt = $this->_array_intersect_first($encryption_algorithms, $this->encryption_algorithms_client_to_server); - $encryptKeyLength = $this->_encryption_algorithm_to_key_size($encrypt); - if ($encryptKeyLength === null) { - user_error('No compatible client to server encryption algorithms found'); - return $this->_disconnect(NET_SSH2_DISCONNECT_KEY_EXCHANGE_FAILED); - } - - $keyLength = $decryptKeyLength > $encryptKeyLength ? $decryptKeyLength : $encryptKeyLength; - - // through diffie-hellman key exchange a symmetric key is obtained - $kex_algorithm = $this->_array_intersect_first($kex_algorithms, $this->kex_algorithms); - if ($kex_algorithm === false) { - user_error('No compatible key exchange algorithms found'); - return $this->_disconnect(NET_SSH2_DISCONNECT_KEY_EXCHANGE_FAILED); - } - if (strpos($kex_algorithm, 'diffie-hellman-group-exchange') === 0) { - $dh_group_sizes_packed = pack( - 'NNN', - $this->kex_dh_group_size_min, - $this->kex_dh_group_size_preferred, - $this->kex_dh_group_size_max - ); - $packet = pack( - 'Ca*', - NET_SSH2_MSG_KEXDH_GEX_REQUEST, - $dh_group_sizes_packed - ); - if (!$this->_send_binary_packet($packet)) { - return false; - } - - $response = $this->_get_binary_packet(); - if ($response === false) { - user_error('Connection closed by server'); - return false; - } - extract(unpack('Ctype', $this->_string_shift($response, 1))); - if ($type != NET_SSH2_MSG_KEXDH_GEX_GROUP) { - user_error('Expected SSH_MSG_KEX_DH_GEX_GROUP'); - return false; - } - - extract(unpack('NprimeLength', $this->_string_shift($response, 4))); - $primeBytes = $this->_string_shift($response, $primeLength); - $prime = new Math_BigInteger($primeBytes, -256); - - extract(unpack('NgLength', $this->_string_shift($response, 4))); - $gBytes = $this->_string_shift($response, $gLength); - $g = new Math_BigInteger($gBytes, -256); - - $exchange_hash_rfc4419 = pack( - 'a*Na*Na*', - $dh_group_sizes_packed, - $primeLength, - $primeBytes, - $gLength, - $gBytes - ); - - $clientKexInitMessage = NET_SSH2_MSG_KEXDH_GEX_INIT; - $serverKexReplyMessage = NET_SSH2_MSG_KEXDH_GEX_REPLY; - } else { - switch ($kex_algorithm) { - // see http://tools.ietf.org/html/rfc2409#section-6.2 and - // http://tools.ietf.org/html/rfc2412, appendex E - case 'diffie-hellman-group1-sha1': - $prime = 'FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD129024E088A67CC74' . - '020BBEA63B139B22514A08798E3404DDEF9519B3CD3A431B302B0A6DF25F1437' . - '4FE1356D6D51C245E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7ED' . - 'EE386BFB5A899FA5AE9F24117C4B1FE649286651ECE65381FFFFFFFFFFFFFFFF'; - break; - // see http://tools.ietf.org/html/rfc3526#section-3 - case 'diffie-hellman-group14-sha1': - $prime = 'FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD129024E088A67CC74' . - '020BBEA63B139B22514A08798E3404DDEF9519B3CD3A431B302B0A6DF25F1437' . - '4FE1356D6D51C245E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7ED' . - 'EE386BFB5A899FA5AE9F24117C4B1FE649286651ECE45B3DC2007CB8A163BF05' . - '98DA48361C55D39A69163FA8FD24CF5F83655D23DCA3AD961C62F356208552BB' . - '9ED529077096966D670C354E4ABC9804F1746C08CA18217C32905E462E36CE3B' . - 'E39E772C180E86039B2783A2EC07A28FB5C55DF06F4C52C9DE2BCBF695581718' . - '3995497CEA956AE515D2261898FA051015728E5A8AACAA68FFFFFFFFFFFFFFFF'; - break; - } - // For both diffie-hellman-group1-sha1 and diffie-hellman-group14-sha1 - // the generator field element is 2 (decimal) and the hash function is sha1. - $g = new Math_BigInteger(2); - $prime = new Math_BigInteger($prime, 16); - $exchange_hash_rfc4419 = ''; - $clientKexInitMessage = NET_SSH2_MSG_KEXDH_INIT; - $serverKexReplyMessage = NET_SSH2_MSG_KEXDH_REPLY; - } - - switch ($kex_algorithm) { - case 'diffie-hellman-group-exchange-sha256': - $kexHash = new Crypt_Hash('sha256'); - break; - default: - $kexHash = new Crypt_Hash('sha1'); - } - - /* To increase the speed of the key exchange, both client and server may - reduce the size of their private exponents. It should be at least - twice as long as the key material that is generated from the shared - secret. For more details, see the paper by van Oorschot and Wiener - [VAN-OORSCHOT]. - - -- http://tools.ietf.org/html/rfc4419#section-6.2 */ - $one = new Math_BigInteger(1); - $keyLength = min($keyLength, $kexHash->getLength()); - $max = $one->bitwise_leftShift(16 * $keyLength); // 2 * 8 * $keyLength - $max = $max->subtract($one); - - $x = $one->random($one, $max); - $e = $g->modPow($x, $prime); - - $eBytes = $e->toBytes(true); - $data = pack('CNa*', $clientKexInitMessage, strlen($eBytes), $eBytes); - - if (!$this->_send_binary_packet($data)) { - user_error('Connection closed by server'); - return false; - } - - $response = $this->_get_binary_packet(); - if ($response === false) { - user_error('Connection closed by server'); - return false; - } - extract(unpack('Ctype', $this->_string_shift($response, 1))); - - if ($type != $serverKexReplyMessage) { - user_error('Expected SSH_MSG_KEXDH_REPLY'); - return false; - } - - $temp = unpack('Nlength', $this->_string_shift($response, 4)); - $this->server_public_host_key = $server_public_host_key = $this->_string_shift($response, $temp['length']); - - $temp = unpack('Nlength', $this->_string_shift($server_public_host_key, 4)); - $public_key_format = $this->_string_shift($server_public_host_key, $temp['length']); - - $temp = unpack('Nlength', $this->_string_shift($response, 4)); - $fBytes = $this->_string_shift($response, $temp['length']); - $f = new Math_BigInteger($fBytes, -256); - - $temp = unpack('Nlength', $this->_string_shift($response, 4)); - $this->signature = $this->_string_shift($response, $temp['length']); - - $temp = unpack('Nlength', $this->_string_shift($this->signature, 4)); - $this->signature_format = $this->_string_shift($this->signature, $temp['length']); - - $key = $f->modPow($x, $prime); - $keyBytes = $key->toBytes(true); - - $this->exchange_hash = pack( - 'Na*Na*Na*Na*Na*a*Na*Na*Na*', - strlen($this->identifier), - $this->identifier, - strlen($this->server_identifier), - $this->server_identifier, - strlen($kexinit_payload_client), - $kexinit_payload_client, - strlen($kexinit_payload_server), - $kexinit_payload_server, - strlen($this->server_public_host_key), - $this->server_public_host_key, - $exchange_hash_rfc4419, - strlen($eBytes), - $eBytes, - strlen($fBytes), - $fBytes, - strlen($keyBytes), - $keyBytes - ); - - $this->exchange_hash = $kexHash->hash($this->exchange_hash); - - if ($this->session_id === false) { - $this->session_id = $this->exchange_hash; - } - - $server_host_key_algorithm = $this->_array_intersect_first($server_host_key_algorithms, $this->server_host_key_algorithms); - if ($server_host_key_algorithm === false) { - user_error('No compatible server host key algorithms found'); - return $this->_disconnect(NET_SSH2_DISCONNECT_KEY_EXCHANGE_FAILED); - } - - if ($public_key_format != $server_host_key_algorithm || $this->signature_format != $server_host_key_algorithm) { - user_error('Server Host Key Algorithm Mismatch'); - return $this->_disconnect(NET_SSH2_DISCONNECT_KEY_EXCHANGE_FAILED); - } - - $packet = pack( - 'C', - NET_SSH2_MSG_NEWKEYS - ); - - if (!$this->_send_binary_packet($packet)) { - return false; - } - - $response = $this->_get_binary_packet(); - - if ($response === false) { - user_error('Connection closed by server'); - return false; - } - - extract(unpack('Ctype', $this->_string_shift($response, 1))); - - if ($type != NET_SSH2_MSG_NEWKEYS) { - user_error('Expected SSH_MSG_NEWKEYS'); - return false; - } - - switch ($encrypt) { - case '3des-cbc': - if (!class_exists('Crypt_TripleDES')) { - include_once 'Crypt/TripleDES.php'; - } - $this->encrypt = new Crypt_TripleDES(); - // $this->encrypt_block_size = 64 / 8 == the default - break; - case '3des-ctr': - if (!class_exists('Crypt_TripleDES')) { - include_once 'Crypt/TripleDES.php'; - } - $this->encrypt = new Crypt_TripleDES(CRYPT_DES_MODE_CTR); - // $this->encrypt_block_size = 64 / 8 == the default - break; - case 'aes256-cbc': - case 'aes192-cbc': - case 'aes128-cbc': - if (!class_exists('Crypt_Rijndael')) { - include_once 'Crypt/Rijndael.php'; - } - $this->encrypt = new Crypt_Rijndael(); - $this->encrypt_block_size = 16; // eg. 128 / 8 - break; - case 'aes256-ctr': - case 'aes192-ctr': - case 'aes128-ctr': - if (!class_exists('Crypt_Rijndael')) { - include_once 'Crypt/Rijndael.php'; - } - $this->encrypt = new Crypt_Rijndael(CRYPT_RIJNDAEL_MODE_CTR); - $this->encrypt_block_size = 16; // eg. 128 / 8 - break; - case 'blowfish-cbc': - if (!class_exists('Crypt_Blowfish')) { - include_once 'Crypt/Blowfish.php'; - } - $this->encrypt = new Crypt_Blowfish(); - $this->encrypt_block_size = 8; - break; - case 'blowfish-ctr': - if (!class_exists('Crypt_Blowfish')) { - include_once 'Crypt/Blowfish.php'; - } - $this->encrypt = new Crypt_Blowfish(CRYPT_BLOWFISH_MODE_CTR); - $this->encrypt_block_size = 8; - break; - case 'twofish128-cbc': - case 'twofish192-cbc': - case 'twofish256-cbc': - case 'twofish-cbc': - if (!class_exists('Crypt_Twofish')) { - include_once 'Crypt/Twofish.php'; - } - $this->encrypt = new Crypt_Twofish(); - $this->encrypt_block_size = 16; - break; - case 'twofish128-ctr': - case 'twofish192-ctr': - case 'twofish256-ctr': - if (!class_exists('Crypt_Twofish')) { - include_once 'Crypt/Twofish.php'; - } - $this->encrypt = new Crypt_Twofish(CRYPT_TWOFISH_MODE_CTR); - $this->encrypt_block_size = 16; - break; - case 'arcfour': - case 'arcfour128': - case 'arcfour256': - if (!class_exists('Crypt_RC4')) { - include_once 'Crypt/RC4.php'; - } - $this->encrypt = new Crypt_RC4(); - break; - case 'none': - //$this->encrypt = new Crypt_Null(); - } - - switch ($decrypt) { - case '3des-cbc': - if (!class_exists('Crypt_TripleDES')) { - include_once 'Crypt/TripleDES.php'; - } - $this->decrypt = new Crypt_TripleDES(); - break; - case '3des-ctr': - if (!class_exists('Crypt_TripleDES')) { - include_once 'Crypt/TripleDES.php'; - } - $this->decrypt = new Crypt_TripleDES(CRYPT_DES_MODE_CTR); - break; - case 'aes256-cbc': - case 'aes192-cbc': - case 'aes128-cbc': - if (!class_exists('Crypt_Rijndael')) { - include_once 'Crypt/Rijndael.php'; - } - $this->decrypt = new Crypt_Rijndael(); - $this->decrypt_block_size = 16; - break; - case 'aes256-ctr': - case 'aes192-ctr': - case 'aes128-ctr': - if (!class_exists('Crypt_Rijndael')) { - include_once 'Crypt/Rijndael.php'; - } - $this->decrypt = new Crypt_Rijndael(CRYPT_RIJNDAEL_MODE_CTR); - $this->decrypt_block_size = 16; - break; - case 'blowfish-cbc': - if (!class_exists('Crypt_Blowfish')) { - include_once 'Crypt/Blowfish.php'; - } - $this->decrypt = new Crypt_Blowfish(); - $this->decrypt_block_size = 8; - break; - case 'blowfish-ctr': - if (!class_exists('Crypt_Blowfish')) { - include_once 'Crypt/Blowfish.php'; - } - $this->decrypt = new Crypt_Blowfish(CRYPT_BLOWFISH_MODE_CTR); - $this->decrypt_block_size = 8; - break; - case 'twofish128-cbc': - case 'twofish192-cbc': - case 'twofish256-cbc': - case 'twofish-cbc': - if (!class_exists('Crypt_Twofish')) { - include_once 'Crypt/Twofish.php'; - } - $this->decrypt = new Crypt_Twofish(); - $this->decrypt_block_size = 16; - break; - case 'twofish128-ctr': - case 'twofish192-ctr': - case 'twofish256-ctr': - if (!class_exists('Crypt_Twofish')) { - include_once 'Crypt/Twofish.php'; - } - $this->decrypt = new Crypt_Twofish(CRYPT_TWOFISH_MODE_CTR); - $this->decrypt_block_size = 16; - break; - case 'arcfour': - case 'arcfour128': - case 'arcfour256': - if (!class_exists('Crypt_RC4')) { - include_once 'Crypt/RC4.php'; - } - $this->decrypt = new Crypt_RC4(); - break; - case 'none': - //$this->decrypt = new Crypt_Null(); - } - - $keyBytes = pack('Na*', strlen($keyBytes), $keyBytes); - - if ($this->encrypt) { - if ($this->crypto_engine) { - $this->encrypt->setEngine($this->crypto_engine); - } - $this->encrypt->enableContinuousBuffer(); - $this->encrypt->disablePadding(); - - $iv = $kexHash->hash($keyBytes . $this->exchange_hash . 'A' . $this->session_id); - while ($this->encrypt_block_size > strlen($iv)) { - $iv.= $kexHash->hash($keyBytes . $this->exchange_hash . $iv); - } - $this->encrypt->setIV(substr($iv, 0, $this->encrypt_block_size)); - - $key = $kexHash->hash($keyBytes . $this->exchange_hash . 'C' . $this->session_id); - while ($encryptKeyLength > strlen($key)) { - $key.= $kexHash->hash($keyBytes . $this->exchange_hash . $key); - } - $this->encrypt->setKey(substr($key, 0, $encryptKeyLength)); - } - - if ($this->decrypt) { - if ($this->crypto_engine) { - $this->decrypt->setEngine($this->crypto_engine); - } - $this->decrypt->enableContinuousBuffer(); - $this->decrypt->disablePadding(); - - $iv = $kexHash->hash($keyBytes . $this->exchange_hash . 'B' . $this->session_id); - while ($this->decrypt_block_size > strlen($iv)) { - $iv.= $kexHash->hash($keyBytes . $this->exchange_hash . $iv); - } - $this->decrypt->setIV(substr($iv, 0, $this->decrypt_block_size)); - - $key = $kexHash->hash($keyBytes . $this->exchange_hash . 'D' . $this->session_id); - while ($decryptKeyLength > strlen($key)) { - $key.= $kexHash->hash($keyBytes . $this->exchange_hash . $key); - } - $this->decrypt->setKey(substr($key, 0, $decryptKeyLength)); - } - - /* The "arcfour128" algorithm is the RC4 cipher, as described in - [SCHNEIER], using a 128-bit key. The first 1536 bytes of keystream - generated by the cipher MUST be discarded, and the first byte of the - first encrypted packet MUST be encrypted using the 1537th byte of - keystream. - - -- http://tools.ietf.org/html/rfc4345#section-4 */ - if ($encrypt == 'arcfour128' || $encrypt == 'arcfour256') { - $this->encrypt->encrypt(str_repeat("\0", 1536)); - } - if ($decrypt == 'arcfour128' || $decrypt == 'arcfour256') { - $this->decrypt->decrypt(str_repeat("\0", 1536)); - } - - $mac_algorithm = $this->_array_intersect_first($mac_algorithms, $this->mac_algorithms_client_to_server); - if ($mac_algorithm === false) { - user_error('No compatible client to server message authentication algorithms found'); - return $this->_disconnect(NET_SSH2_DISCONNECT_KEY_EXCHANGE_FAILED); - } - - $createKeyLength = 0; // ie. $mac_algorithm == 'none' - switch ($mac_algorithm) { - case 'hmac-sha2-256': - $this->hmac_create = new Crypt_Hash('sha256'); - $createKeyLength = 32; - break; - case 'hmac-sha1': - $this->hmac_create = new Crypt_Hash('sha1'); - $createKeyLength = 20; - break; - case 'hmac-sha1-96': - $this->hmac_create = new Crypt_Hash('sha1-96'); - $createKeyLength = 20; - break; - case 'hmac-md5': - $this->hmac_create = new Crypt_Hash('md5'); - $createKeyLength = 16; - break; - case 'hmac-md5-96': - $this->hmac_create = new Crypt_Hash('md5-96'); - $createKeyLength = 16; - } - - $mac_algorithm = $this->_array_intersect_first($mac_algorithms, $this->mac_algorithms_server_to_client); - if ($mac_algorithm === false) { - user_error('No compatible server to client message authentication algorithms found'); - return $this->_disconnect(NET_SSH2_DISCONNECT_KEY_EXCHANGE_FAILED); - } - - $checkKeyLength = 0; - $this->hmac_size = 0; - switch ($mac_algorithm) { - case 'hmac-sha2-256': - $this->hmac_check = new Crypt_Hash('sha256'); - $checkKeyLength = 32; - $this->hmac_size = 32; - break; - case 'hmac-sha1': - $this->hmac_check = new Crypt_Hash('sha1'); - $checkKeyLength = 20; - $this->hmac_size = 20; - break; - case 'hmac-sha1-96': - $this->hmac_check = new Crypt_Hash('sha1-96'); - $checkKeyLength = 20; - $this->hmac_size = 12; - break; - case 'hmac-md5': - $this->hmac_check = new Crypt_Hash('md5'); - $checkKeyLength = 16; - $this->hmac_size = 16; - break; - case 'hmac-md5-96': - $this->hmac_check = new Crypt_Hash('md5-96'); - $checkKeyLength = 16; - $this->hmac_size = 12; - } - - $key = $kexHash->hash($keyBytes . $this->exchange_hash . 'E' . $this->session_id); - while ($createKeyLength > strlen($key)) { - $key.= $kexHash->hash($keyBytes . $this->exchange_hash . $key); - } - $this->hmac_create->setKey(substr($key, 0, $createKeyLength)); - - $key = $kexHash->hash($keyBytes . $this->exchange_hash . 'F' . $this->session_id); - while ($checkKeyLength > strlen($key)) { - $key.= $kexHash->hash($keyBytes . $this->exchange_hash . $key); - } - $this->hmac_check->setKey(substr($key, 0, $checkKeyLength)); - - $compression_algorithm = $this->_array_intersect_first($compression_algorithms, $this->compression_algorithms_server_to_client); - if ($compression_algorithm === false) { - user_error('No compatible server to client compression algorithms found'); - return $this->_disconnect(NET_SSH2_DISCONNECT_KEY_EXCHANGE_FAILED); - } - $this->decompress = $compression_algorithm == 'zlib'; - - $compression_algorithm = $this->_array_intersect_first($compression_algorithms, $this->compression_algorithms_client_to_server); - if ($compression_algorithm === false) { - user_error('No compatible client to server compression algorithms found'); - return $this->_disconnect(NET_SSH2_DISCONNECT_KEY_EXCHANGE_FAILED); - } - $this->compress = $compression_algorithm == 'zlib'; - - return true; - } - - /** - * Maps an encryption algorithm name to the number of key bytes. - * - * @param string $algorithm Name of the encryption algorithm - * @return int|null Number of bytes as an integer or null for unknown - * @access private - */ - function _encryption_algorithm_to_key_size($algorithm) - { - switch ($algorithm) { - case 'none': - return 0; - case 'aes128-cbc': - case 'aes128-ctr': - case 'arcfour': - case 'arcfour128': - case 'blowfish-cbc': - case 'blowfish-ctr': - case 'twofish128-cbc': - case 'twofish128-ctr': - return 16; - case '3des-cbc': - case '3des-ctr': - case 'aes192-cbc': - case 'aes192-ctr': - case 'twofish192-cbc': - case 'twofish192-ctr': - return 24; - case 'aes256-cbc': - case 'aes256-ctr': - case 'arcfour256': - case 'twofish-cbc': - case 'twofish256-cbc': - case 'twofish256-ctr': - return 32; - } - return null; - } - - /** - * Login - * - * The $password parameter can be a plaintext password, a Crypt_RSA object or an array - * - * @param string $username - * @param mixed $password - * @param mixed $... - * @return bool - * @see self::_login() - * @access public - */ - function login($username) - { - $args = func_get_args(); - return call_user_func_array(array(&$this, '_login'), $args); - } - - /** - * Login Helper - * - * @param string $username - * @param mixed $password - * @param mixed $... - * @return bool - * @see self::_login_helper() - * @access private - */ - function _login($username) - { - if (!($this->bitmap & NET_SSH2_MASK_CONSTRUCTOR)) { - if (!$this->_connect()) { - return false; - } - } - - $args = array_slice(func_get_args(), 1); - if (empty($args)) { - return $this->_login_helper($username); - } - - foreach ($args as $arg) { - if ($this->_login_helper($username, $arg)) { - return true; - } - } - return false; - } - - /** - * Login Helper - * - * @param string $username - * @param string $password - * @return bool - * @access private - * @internal It might be worthwhile, at some point, to protect against {@link http://tools.ietf.org/html/rfc4251#section-9.3.9 traffic analysis} - * by sending dummy SSH_MSG_IGNORE messages. - */ - function _login_helper($username, $password = null) - { - if (!($this->bitmap & NET_SSH2_MASK_CONNECTED)) { - return false; - } - - if (!($this->bitmap & NET_SSH2_MASK_LOGIN_REQ)) { - $packet = pack( - 'CNa*', - NET_SSH2_MSG_SERVICE_REQUEST, - strlen('ssh-userauth'), - 'ssh-userauth' - ); - - if (!$this->_send_binary_packet($packet)) { - return false; - } - - $response = $this->_get_binary_packet(); - if ($response === false) { - user_error('Connection closed by server'); - return false; - } - - extract(unpack('Ctype', $this->_string_shift($response, 1))); - - if ($type != NET_SSH2_MSG_SERVICE_ACCEPT) { - user_error('Expected SSH_MSG_SERVICE_ACCEPT'); - return false; - } - $this->bitmap |= NET_SSH2_MASK_LOGIN_REQ; - } - - if (strlen($this->last_interactive_response)) { - return !is_string($password) && !is_array($password) ? false : $this->_keyboard_interactive_process($password); - } - - // although PHP5's get_class() preserves the case, PHP4's does not - if (is_object($password)) { - switch (strtolower(get_class($password))) { - case 'crypt_rsa': - return $this->_privatekey_login($username, $password); - case 'system_ssh_agent': - return $this->_ssh_agent_login($username, $password); - } - } - - if (is_array($password)) { - if ($this->_keyboard_interactive_login($username, $password)) { - $this->bitmap |= NET_SSH2_MASK_LOGIN; - return true; - } - return false; - } - - if (!isset($password)) { - $packet = pack( - 'CNa*Na*Na*', - NET_SSH2_MSG_USERAUTH_REQUEST, - strlen($username), - $username, - strlen('ssh-connection'), - 'ssh-connection', - strlen('none'), - 'none' - ); - - if (!$this->_send_binary_packet($packet)) { - return false; - } - - $response = $this->_get_binary_packet(); - if ($response === false) { - user_error('Connection closed by server'); - return false; - } - - extract(unpack('Ctype', $this->_string_shift($response, 1))); - - switch ($type) { - case NET_SSH2_MSG_USERAUTH_SUCCESS: - $this->bitmap |= NET_SSH2_MASK_LOGIN; - return true; - //case NET_SSH2_MSG_USERAUTH_FAILURE: - default: - return false; - } - } - - $packet = pack( - 'CNa*Na*Na*CNa*', - NET_SSH2_MSG_USERAUTH_REQUEST, - strlen($username), - $username, - strlen('ssh-connection'), - 'ssh-connection', - strlen('password'), - 'password', - 0, - strlen($password), - $password - ); - - // remove the username and password from the logged packet - if (!defined('NET_SSH2_LOGGING')) { - $logged = null; - } else { - $logged = pack( - 'CNa*Na*Na*CNa*', - NET_SSH2_MSG_USERAUTH_REQUEST, - strlen('username'), - 'username', - strlen('ssh-connection'), - 'ssh-connection', - strlen('password'), - 'password', - 0, - strlen('password'), - 'password' - ); - } - - if (!$this->_send_binary_packet($packet, $logged)) { - return false; - } - - $response = $this->_get_binary_packet(); - if ($response === false) { - user_error('Connection closed by server'); - return false; - } - - extract(unpack('Ctype', $this->_string_shift($response, 1))); - - switch ($type) { - case NET_SSH2_MSG_USERAUTH_PASSWD_CHANGEREQ: // in theory, the password can be changed - if (defined('NET_SSH2_LOGGING')) { - $this->message_number_log[count($this->message_number_log) - 1] = 'NET_SSH2_MSG_USERAUTH_PASSWD_CHANGEREQ'; - } - extract(unpack('Nlength', $this->_string_shift($response, 4))); - $this->errors[] = 'SSH_MSG_USERAUTH_PASSWD_CHANGEREQ: ' . utf8_decode($this->_string_shift($response, $length)); - return $this->_disconnect(NET_SSH2_DISCONNECT_AUTH_CANCELLED_BY_USER); - case NET_SSH2_MSG_USERAUTH_FAILURE: - // can we use keyboard-interactive authentication? if not then either the login is bad or the server employees - // multi-factor authentication - extract(unpack('Nlength', $this->_string_shift($response, 4))); - $auth_methods = explode(',', $this->_string_shift($response, $length)); - extract(unpack('Cpartial_success', $this->_string_shift($response, 1))); - $partial_success = $partial_success != 0; - - if (!$partial_success && in_array('keyboard-interactive', $auth_methods)) { - if ($this->_keyboard_interactive_login($username, $password)) { - $this->bitmap |= NET_SSH2_MASK_LOGIN; - return true; - } - return false; - } - return false; - case NET_SSH2_MSG_USERAUTH_SUCCESS: - $this->bitmap |= NET_SSH2_MASK_LOGIN; - return true; - } - - return false; - } - - /** - * Login via keyboard-interactive authentication - * - * See {@link http://tools.ietf.org/html/rfc4256 RFC4256} for details. This is not a full-featured keyboard-interactive authenticator. - * - * @param string $username - * @param string $password - * @return bool - * @access private - */ - function _keyboard_interactive_login($username, $password) - { - $packet = pack( - 'CNa*Na*Na*Na*Na*', - NET_SSH2_MSG_USERAUTH_REQUEST, - strlen($username), - $username, - strlen('ssh-connection'), - 'ssh-connection', - strlen('keyboard-interactive'), - 'keyboard-interactive', - 0, - '', - 0, - '' - ); - - if (!$this->_send_binary_packet($packet)) { - return false; - } - - return $this->_keyboard_interactive_process($password); - } - - /** - * Handle the keyboard-interactive requests / responses. - * - * @param string $responses... - * @return bool - * @access private - */ - function _keyboard_interactive_process() - { - $responses = func_get_args(); - - if (strlen($this->last_interactive_response)) { - $response = $this->last_interactive_response; - } else { - $orig = $response = $this->_get_binary_packet(); - if ($response === false) { - user_error('Connection closed by server'); - return false; - } - } - - extract(unpack('Ctype', $this->_string_shift($response, 1))); - - switch ($type) { - case NET_SSH2_MSG_USERAUTH_INFO_REQUEST: - extract(unpack('Nlength', $this->_string_shift($response, 4))); - $this->_string_shift($response, $length); // name; may be empty - extract(unpack('Nlength', $this->_string_shift($response, 4))); - $this->_string_shift($response, $length); // instruction; may be empty - extract(unpack('Nlength', $this->_string_shift($response, 4))); - $this->_string_shift($response, $length); // language tag; may be empty - extract(unpack('Nnum_prompts', $this->_string_shift($response, 4))); - - for ($i = 0; $i < count($responses); $i++) { - if (is_array($responses[$i])) { - foreach ($responses[$i] as $key => $value) { - $this->keyboard_requests_responses[$key] = $value; - } - unset($responses[$i]); - } - } - $responses = array_values($responses); - - if (isset($this->keyboard_requests_responses)) { - for ($i = 0; $i < $num_prompts; $i++) { - extract(unpack('Nlength', $this->_string_shift($response, 4))); - // prompt - ie. "Password: "; must not be empty - $prompt = $this->_string_shift($response, $length); - //$echo = $this->_string_shift($response) != chr(0); - foreach ($this->keyboard_requests_responses as $key => $value) { - if (substr($prompt, 0, strlen($key)) == $key) { - $responses[] = $value; - break; - } - } - } - } - - // see http://tools.ietf.org/html/rfc4256#section-3.2 - if (strlen($this->last_interactive_response)) { - $this->last_interactive_response = ''; - } elseif (defined('NET_SSH2_LOGGING')) { - $this->message_number_log[count($this->message_number_log) - 1] = str_replace( - 'UNKNOWN', - 'NET_SSH2_MSG_USERAUTH_INFO_REQUEST', - $this->message_number_log[count($this->message_number_log) - 1] - ); - } - - if (!count($responses) && $num_prompts) { - $this->last_interactive_response = $orig; - return false; - } - - /* - After obtaining the requested information from the user, the client - MUST respond with an SSH_MSG_USERAUTH_INFO_RESPONSE message. - */ - // see http://tools.ietf.org/html/rfc4256#section-3.4 - $packet = $logged = pack('CN', NET_SSH2_MSG_USERAUTH_INFO_RESPONSE, count($responses)); - for ($i = 0; $i < count($responses); $i++) { - $packet.= pack('Na*', strlen($responses[$i]), $responses[$i]); - $logged.= pack('Na*', strlen('dummy-answer'), 'dummy-answer'); - } - - if (!$this->_send_binary_packet($packet, $logged)) { - return false; - } - - if (defined('NET_SSH2_LOGGING') && NET_SSH2_LOGGING == NET_SSH2_LOG_COMPLEX) { - $this->message_number_log[count($this->message_number_log) - 1] = str_replace( - 'UNKNOWN', - 'NET_SSH2_MSG_USERAUTH_INFO_RESPONSE', - $this->message_number_log[count($this->message_number_log) - 1] - ); - } - - /* - After receiving the response, the server MUST send either an - SSH_MSG_USERAUTH_SUCCESS, SSH_MSG_USERAUTH_FAILURE, or another - SSH_MSG_USERAUTH_INFO_REQUEST message. - */ - // maybe phpseclib should force close the connection after x request / responses? unless something like that is done - // there could be an infinite loop of request / responses. - return $this->_keyboard_interactive_process(); - case NET_SSH2_MSG_USERAUTH_SUCCESS: - return true; - case NET_SSH2_MSG_USERAUTH_FAILURE: - return false; - } - - return false; - } - - /** - * Login with an ssh-agent provided key - * - * @param string $username - * @param System_SSH_Agent $agent - * @return bool - * @access private - */ - function _ssh_agent_login($username, $agent) - { - $this->agent = $agent; - $keys = $agent->requestIdentities(); - foreach ($keys as $key) { - if ($this->_privatekey_login($username, $key)) { - return true; - } - } - - return false; - } - - /** - * Login with an RSA private key - * - * @param string $username - * @param Crypt_RSA $password - * @return bool - * @access private - * @internal It might be worthwhile, at some point, to protect against {@link http://tools.ietf.org/html/rfc4251#section-9.3.9 traffic analysis} - * by sending dummy SSH_MSG_IGNORE messages. - */ - function _privatekey_login($username, $privatekey) - { - // see http://tools.ietf.org/html/rfc4253#page-15 - $publickey = $privatekey->getPublicKey(CRYPT_RSA_PUBLIC_FORMAT_RAW); - if ($publickey === false) { - return false; - } - - $publickey = array( - 'e' => $publickey['e']->toBytes(true), - 'n' => $publickey['n']->toBytes(true) - ); - $publickey = pack( - 'Na*Na*Na*', - strlen('ssh-rsa'), - 'ssh-rsa', - strlen($publickey['e']), - $publickey['e'], - strlen($publickey['n']), - $publickey['n'] - ); - - $part1 = pack( - 'CNa*Na*Na*', - NET_SSH2_MSG_USERAUTH_REQUEST, - strlen($username), - $username, - strlen('ssh-connection'), - 'ssh-connection', - strlen('publickey'), - 'publickey' - ); - $part2 = pack('Na*Na*', strlen('ssh-rsa'), 'ssh-rsa', strlen($publickey), $publickey); - - $packet = $part1 . chr(0) . $part2; - if (!$this->_send_binary_packet($packet)) { - return false; - } - - $response = $this->_get_binary_packet(); - if ($response === false) { - user_error('Connection closed by server'); - return false; - } - - extract(unpack('Ctype', $this->_string_shift($response, 1))); - - switch ($type) { - case NET_SSH2_MSG_USERAUTH_FAILURE: - extract(unpack('Nlength', $this->_string_shift($response, 4))); - $this->errors[] = 'SSH_MSG_USERAUTH_FAILURE: ' . $this->_string_shift($response, $length); - return false; - case NET_SSH2_MSG_USERAUTH_PK_OK: - // we'll just take it on faith that the public key blob and the public key algorithm name are as - // they should be - if (defined('NET_SSH2_LOGGING') && NET_SSH2_LOGGING == NET_SSH2_LOG_COMPLEX) { - $this->message_number_log[count($this->message_number_log) - 1] = str_replace( - 'UNKNOWN', - 'NET_SSH2_MSG_USERAUTH_PK_OK', - $this->message_number_log[count($this->message_number_log) - 1] - ); - } - } - - $packet = $part1 . chr(1) . $part2; - $privatekey->setSignatureMode(CRYPT_RSA_SIGNATURE_PKCS1); - $signature = $privatekey->sign(pack('Na*a*', strlen($this->session_id), $this->session_id, $packet)); - $signature = pack('Na*Na*', strlen('ssh-rsa'), 'ssh-rsa', strlen($signature), $signature); - $packet.= pack('Na*', strlen($signature), $signature); - - if (!$this->_send_binary_packet($packet)) { - return false; - } - - $response = $this->_get_binary_packet(); - if ($response === false) { - user_error('Connection closed by server'); - return false; - } - - extract(unpack('Ctype', $this->_string_shift($response, 1))); - - switch ($type) { - case NET_SSH2_MSG_USERAUTH_FAILURE: - // either the login is bad or the server employs multi-factor authentication - return false; - case NET_SSH2_MSG_USERAUTH_SUCCESS: - $this->bitmap |= NET_SSH2_MASK_LOGIN; - return true; - } - - return false; - } - - /** - * Set Timeout - * - * $ssh->exec('ping 127.0.0.1'); on a Linux host will never return and will run indefinitely. setTimeout() makes it so it'll timeout. - * Setting $timeout to false or 0 will mean there is no timeout. - * - * @param mixed $timeout - * @access public - */ - function setTimeout($timeout) - { - $this->timeout = $this->curTimeout = $timeout; - } - - /** - * Get the output from stdError - * - * @access public - */ - function getStdError() - { - return $this->stdErrorLog; - } - - /** - * Execute Command - * - * If $callback is set to false then Net_SSH2::_get_channel_packet(NET_SSH2_CHANNEL_EXEC) will need to be called manually. - * In all likelihood, this is not a feature you want to be taking advantage of. - * - * @param string $command - * @param Callback $callback - * @return string - * @access public - */ - function exec($command, $callback = null) - { - $this->curTimeout = $this->timeout; - $this->is_timeout = false; - $this->stdErrorLog = ''; - - if (!($this->bitmap & NET_SSH2_MASK_LOGIN)) { - return false; - } - - // RFC4254 defines the (client) window size as "bytes the other party can send before it must wait for the window to - // be adjusted". 0x7FFFFFFF is, at 2GB, the max size. technically, it should probably be decremented, but, - // honestly, if you're transferring more than 2GB, you probably shouldn't be using phpseclib, anyway. - // see http://tools.ietf.org/html/rfc4254#section-5.2 for more info - $this->window_size_server_to_client[NET_SSH2_CHANNEL_EXEC] = $this->window_size; - // 0x8000 is the maximum max packet size, per http://tools.ietf.org/html/rfc4253#section-6.1, although since PuTTy - // uses 0x4000, that's what will be used here, as well. - $packet_size = 0x4000; - - $packet = pack( - 'CNa*N3', - NET_SSH2_MSG_CHANNEL_OPEN, - strlen('session'), - 'session', - NET_SSH2_CHANNEL_EXEC, - $this->window_size_server_to_client[NET_SSH2_CHANNEL_EXEC], - $packet_size - ); - - if (!$this->_send_binary_packet($packet)) { - return false; - } - - $this->channel_status[NET_SSH2_CHANNEL_EXEC] = NET_SSH2_MSG_CHANNEL_OPEN; - - $response = $this->_get_channel_packet(NET_SSH2_CHANNEL_EXEC); - if ($response === false) { - return false; - } - - if ($this->request_pty === true) { - $terminal_modes = pack('C', NET_SSH2_TTY_OP_END); - $packet = pack( - 'CNNa*CNa*N5a*', - NET_SSH2_MSG_CHANNEL_REQUEST, - $this->server_channels[NET_SSH2_CHANNEL_EXEC], - strlen('pty-req'), - 'pty-req', - 1, - strlen('vt100'), - 'vt100', - $this->windowColumns, - $this->windowRows, - 0, - 0, - strlen($terminal_modes), - $terminal_modes - ); - - if (!$this->_send_binary_packet($packet)) { - return false; - } - - $response = $this->_get_binary_packet(); - if ($response === false) { - user_error('Connection closed by server'); - return false; - } - - list(, $type) = unpack('C', $this->_string_shift($response, 1)); - - switch ($type) { - case NET_SSH2_MSG_CHANNEL_SUCCESS: - break; - case NET_SSH2_MSG_CHANNEL_FAILURE: - default: - user_error('Unable to request pseudo-terminal'); - return $this->_disconnect(NET_SSH2_DISCONNECT_BY_APPLICATION); - } - $this->in_request_pty_exec = true; - } - - // sending a pty-req SSH_MSG_CHANNEL_REQUEST message is unnecessary and, in fact, in most cases, slows things - // down. the one place where it might be desirable is if you're doing something like Net_SSH2::exec('ping localhost &'). - // with a pty-req SSH_MSG_CHANNEL_REQUEST, exec() will return immediately and the ping process will then - // then immediately terminate. without such a request exec() will loop indefinitely. the ping process won't end but - // neither will your script. - - // although, in theory, the size of SSH_MSG_CHANNEL_REQUEST could exceed the maximum packet size established by - // SSH_MSG_CHANNEL_OPEN_CONFIRMATION, RFC4254#section-5.1 states that the "maximum packet size" refers to the - // "maximum size of an individual data packet". ie. SSH_MSG_CHANNEL_DATA. RFC4254#section-5.2 corroborates. - $packet = pack( - 'CNNa*CNa*', - NET_SSH2_MSG_CHANNEL_REQUEST, - $this->server_channels[NET_SSH2_CHANNEL_EXEC], - strlen('exec'), - 'exec', - 1, - strlen($command), - $command - ); - - if (!$this->_send_binary_packet($packet)) { - return false; - } - - $this->channel_status[NET_SSH2_CHANNEL_EXEC] = NET_SSH2_MSG_CHANNEL_REQUEST; - - $response = $this->_get_channel_packet(NET_SSH2_CHANNEL_EXEC); - if ($response === false) { - return false; - } - - $this->channel_status[NET_SSH2_CHANNEL_EXEC] = NET_SSH2_MSG_CHANNEL_DATA; - - if ($callback === false || $this->in_request_pty_exec) { - return true; - } - - $output = ''; - while (true) { - $temp = $this->_get_channel_packet(NET_SSH2_CHANNEL_EXEC); - switch (true) { - case $temp === true: - return is_callable($callback) ? true : $output; - case $temp === false: - return false; - default: - if (is_callable($callback)) { - if (call_user_func($callback, $temp) === true) { - $this->_close_channel(NET_SSH2_CHANNEL_EXEC); - return true; - } - } else { - $output.= $temp; - } - } - } - } - - /** - * Creates an interactive shell - * - * @see self::read() - * @see self::write() - * @return bool - * @access private - */ - function _initShell() - { - if ($this->in_request_pty_exec === true) { - return true; - } - - $this->window_size_server_to_client[NET_SSH2_CHANNEL_SHELL] = $this->window_size; - $packet_size = 0x4000; - - $packet = pack( - 'CNa*N3', - NET_SSH2_MSG_CHANNEL_OPEN, - strlen('session'), - 'session', - NET_SSH2_CHANNEL_SHELL, - $this->window_size_server_to_client[NET_SSH2_CHANNEL_SHELL], - $packet_size - ); - - if (!$this->_send_binary_packet($packet)) { - return false; - } - - $this->channel_status[NET_SSH2_CHANNEL_SHELL] = NET_SSH2_MSG_CHANNEL_OPEN; - - $response = $this->_get_channel_packet(NET_SSH2_CHANNEL_SHELL); - if ($response === false) { - return false; - } - - $terminal_modes = pack('C', NET_SSH2_TTY_OP_END); - $packet = pack( - 'CNNa*CNa*N5a*', - NET_SSH2_MSG_CHANNEL_REQUEST, - $this->server_channels[NET_SSH2_CHANNEL_SHELL], - strlen('pty-req'), - 'pty-req', - 1, - strlen('vt100'), - 'vt100', - $this->windowColumns, - $this->windowRows, - 0, - 0, - strlen($terminal_modes), - $terminal_modes - ); - - if (!$this->_send_binary_packet($packet)) { - return false; - } - - $response = $this->_get_binary_packet(); - if ($response === false) { - user_error('Connection closed by server'); - return false; - } - - list(, $type) = unpack('C', $this->_string_shift($response, 1)); - - switch ($type) { - case NET_SSH2_MSG_CHANNEL_SUCCESS: - // if a pty can't be opened maybe commands can still be executed - case NET_SSH2_MSG_CHANNEL_FAILURE: - break; - default: - user_error('Unable to request pseudo-terminal'); - return $this->_disconnect(NET_SSH2_DISCONNECT_BY_APPLICATION); - } - - $packet = pack( - 'CNNa*C', - NET_SSH2_MSG_CHANNEL_REQUEST, - $this->server_channels[NET_SSH2_CHANNEL_SHELL], - strlen('shell'), - 'shell', - 1 - ); - if (!$this->_send_binary_packet($packet)) { - return false; - } - - $this->channel_status[NET_SSH2_CHANNEL_SHELL] = NET_SSH2_MSG_CHANNEL_REQUEST; - - $response = $this->_get_channel_packet(NET_SSH2_CHANNEL_SHELL); - if ($response === false) { - return false; - } - - $this->channel_status[NET_SSH2_CHANNEL_SHELL] = NET_SSH2_MSG_CHANNEL_DATA; - - $this->bitmap |= NET_SSH2_MASK_SHELL; - - return true; - } - - /** - * Return the channel to be used with read() / write() - * - * @see self::read() - * @see self::write() - * @return int - * @access public - */ - function _get_interactive_channel() - { - switch (true) { - case $this->in_subsystem: - return NET_SSH2_CHANNEL_SUBSYSTEM; - case $this->in_request_pty_exec: - return NET_SSH2_CHANNEL_EXEC; - default: - return NET_SSH2_CHANNEL_SHELL; - } - } - - /** - * Return an available open channel - * - * @return int - * @access public - */ - function _get_open_channel() - { - $channel = NET_SSH2_CHANNEL_EXEC; - do { - if (isset($this->channel_status[$channel]) && $this->channel_status[$channel] == NET_SSH2_MSG_CHANNEL_OPEN) { - return $channel; - } - } while ($channel++ < NET_SSH2_CHANNEL_SUBSYSTEM); - - return false; - } - - /** - * Returns the output of an interactive shell - * - * Returns when there's a match for $expect, which can take the form of a string literal or, - * if $mode == NET_SSH2_READ_REGEX, a regular expression. - * - * @see self::write() - * @param string $expect - * @param int $mode - * @return string - * @access public - */ - function read($expect = '', $mode = NET_SSH2_READ_SIMPLE) - { - $this->curTimeout = $this->timeout; - $this->is_timeout = false; - - if (!($this->bitmap & NET_SSH2_MASK_LOGIN)) { - user_error('Operation disallowed prior to login()'); - return false; - } - - if (!($this->bitmap & NET_SSH2_MASK_SHELL) && !$this->_initShell()) { - user_error('Unable to initiate an interactive shell session'); - return false; - } - - $channel = $this->_get_interactive_channel(); - - $match = $expect; - while (true) { - if ($mode == NET_SSH2_READ_REGEX) { - preg_match($expect, substr($this->interactiveBuffer, -1024), $matches); - $match = isset($matches[0]) ? $matches[0] : ''; - } - $pos = strlen($match) ? strpos($this->interactiveBuffer, $match) : false; - if ($pos !== false) { - return $this->_string_shift($this->interactiveBuffer, $pos + strlen($match)); - } - $response = $this->_get_channel_packet($channel); - if (is_bool($response)) { - $this->in_request_pty_exec = false; - return $response ? $this->_string_shift($this->interactiveBuffer, strlen($this->interactiveBuffer)) : false; - } - - $this->interactiveBuffer.= $response; - } - } - - /** - * Inputs a command into an interactive shell. - * - * @see self::read() - * @param string $cmd - * @return bool - * @access public - */ - function write($cmd) - { - if (!($this->bitmap & NET_SSH2_MASK_LOGIN)) { - user_error('Operation disallowed prior to login()'); - return false; - } - - if (!($this->bitmap & NET_SSH2_MASK_SHELL) && !$this->_initShell()) { - user_error('Unable to initiate an interactive shell session'); - return false; - } - - return $this->_send_channel_packet($this->_get_interactive_channel(), $cmd); - } - - /** - * Start a subsystem. - * - * Right now only one subsystem at a time is supported. To support multiple subsystem's stopSubsystem() could accept - * a string that contained the name of the subsystem, but at that point, only one subsystem of each type could be opened. - * To support multiple subsystem's of the same name maybe it'd be best if startSubsystem() generated a new channel id and - * returns that and then that that was passed into stopSubsystem() but that'll be saved for a future date and implemented - * if there's sufficient demand for such a feature. - * - * @see self::stopSubsystem() - * @param string $subsystem - * @return bool - * @access public - */ - function startSubsystem($subsystem) - { - $this->window_size_server_to_client[NET_SSH2_CHANNEL_SUBSYSTEM] = $this->window_size; - - $packet = pack( - 'CNa*N3', - NET_SSH2_MSG_CHANNEL_OPEN, - strlen('session'), - 'session', - NET_SSH2_CHANNEL_SUBSYSTEM, - $this->window_size, - 0x4000 - ); - - if (!$this->_send_binary_packet($packet)) { - return false; - } - - $this->channel_status[NET_SSH2_CHANNEL_SUBSYSTEM] = NET_SSH2_MSG_CHANNEL_OPEN; - - $response = $this->_get_channel_packet(NET_SSH2_CHANNEL_SUBSYSTEM); - if ($response === false) { - return false; - } - - $packet = pack( - 'CNNa*CNa*', - NET_SSH2_MSG_CHANNEL_REQUEST, - $this->server_channels[NET_SSH2_CHANNEL_SUBSYSTEM], - strlen('subsystem'), - 'subsystem', - 1, - strlen($subsystem), - $subsystem - ); - if (!$this->_send_binary_packet($packet)) { - return false; - } - - $this->channel_status[NET_SSH2_CHANNEL_SUBSYSTEM] = NET_SSH2_MSG_CHANNEL_REQUEST; - - $response = $this->_get_channel_packet(NET_SSH2_CHANNEL_SUBSYSTEM); - - if ($response === false) { - return false; - } - - $this->channel_status[NET_SSH2_CHANNEL_SUBSYSTEM] = NET_SSH2_MSG_CHANNEL_DATA; - - $this->bitmap |= NET_SSH2_MASK_SHELL; - $this->in_subsystem = true; - - return true; - } - - /** - * Stops a subsystem. - * - * @see self::startSubsystem() - * @return bool - * @access public - */ - function stopSubsystem() - { - $this->in_subsystem = false; - $this->_close_channel(NET_SSH2_CHANNEL_SUBSYSTEM); - return true; - } - - /** - * Closes a channel - * - * If read() timed out you might want to just close the channel and have it auto-restart on the next read() call - * - * @access public - */ - function reset() - { - $this->_close_channel($this->_get_interactive_channel()); - } - - /** - * Is timeout? - * - * Did exec() or read() return because they timed out or because they encountered the end? - * - * @access public - */ - function isTimeout() - { - return $this->is_timeout; - } - - /** - * Disconnect - * - * @access public - */ - function disconnect() - { - $this->_disconnect(NET_SSH2_DISCONNECT_BY_APPLICATION); - if (isset($this->realtime_log_file) && is_resource($this->realtime_log_file)) { - fclose($this->realtime_log_file); - } - } - - /** - * Destructor. - * - * Will be called, automatically, if you're supporting just PHP5. If you're supporting PHP4, you'll need to call - * disconnect(). - * - * @access public - */ - function __destruct() - { - $this->disconnect(); - } - - /** - * Is the connection still active? - * - * @return bool - * @access public - */ - function isConnected() - { - return (bool) ($this->bitmap & NET_SSH2_MASK_CONNECTED); - } - - /** - * Have you successfully been logged in? - * - * @return bool - * @access public - */ - function isAuthenticated() - { - return (bool) ($this->bitmap & NET_SSH2_MASK_LOGIN); - } - - /** - * Gets Binary Packets - * - * See '6. Binary Packet Protocol' of rfc4253 for more info. - * - * @see self::_send_binary_packet() - * @return string - * @access private - */ - function _get_binary_packet() - { - if (!is_resource($this->fsock) || feof($this->fsock)) { - user_error('Connection closed prematurely'); - $this->bitmap = 0; - return false; - } - - $start = strtok(microtime(), ' ') + strtok(''); // http://php.net/microtime#61838 - $raw = fread($this->fsock, $this->decrypt_block_size); - - if (!strlen($raw)) { - return ''; - } - - if ($this->decrypt !== false) { - $raw = $this->decrypt->decrypt($raw); - } - if ($raw === false) { - user_error('Unable to decrypt content'); - return false; - } - - extract(unpack('Npacket_length/Cpadding_length', $this->_string_shift($raw, 5))); - - $remaining_length = $packet_length + 4 - $this->decrypt_block_size; - - // quoting <http://tools.ietf.org/html/rfc4253#section-6.1>, - // "implementations SHOULD check that the packet length is reasonable" - // PuTTY uses 0x9000 as the actual max packet size and so to shall we - if ($remaining_length < -$this->decrypt_block_size || $remaining_length > 0x9000 || $remaining_length % $this->decrypt_block_size != 0) { - user_error('Invalid size'); - return false; - } - - $buffer = ''; - while ($remaining_length > 0) { - $temp = fread($this->fsock, $remaining_length); - if ($temp === false || feof($this->fsock)) { - user_error('Error reading from socket'); - $this->bitmap = 0; - return false; - } - $buffer.= $temp; - $remaining_length-= strlen($temp); - } - $stop = strtok(microtime(), ' ') + strtok(''); - if (strlen($buffer)) { - $raw.= $this->decrypt !== false ? $this->decrypt->decrypt($buffer) : $buffer; - } - - $payload = $this->_string_shift($raw, $packet_length - $padding_length - 1); - $padding = $this->_string_shift($raw, $padding_length); // should leave $raw empty - - if ($this->hmac_check !== false) { - $hmac = fread($this->fsock, $this->hmac_size); - if ($hmac === false || strlen($hmac) != $this->hmac_size) { - user_error('Error reading socket'); - $this->bitmap = 0; - return false; - } elseif ($hmac != $this->hmac_check->hash(pack('NNCa*', $this->get_seq_no, $packet_length, $padding_length, $payload . $padding))) { - user_error('Invalid HMAC'); - return false; - } - } - - //if ($this->decompress) { - // $payload = gzinflate(substr($payload, 2)); - //} - - $this->get_seq_no++; - - if (defined('NET_SSH2_LOGGING')) { - $current = strtok(microtime(), ' ') + strtok(''); - $message_number = isset($this->message_numbers[ord($payload[0])]) ? $this->message_numbers[ord($payload[0])] : 'UNKNOWN (' . ord($payload[0]) . ')'; - $message_number = '<- ' . $message_number . - ' (since last: ' . round($current - $this->last_packet, 4) . ', network: ' . round($stop - $start, 4) . 's)'; - $this->_append_log($message_number, $payload); - $this->last_packet = $current; - } - - return $this->_filter($payload); - } - - /** - * Filter Binary Packets - * - * Because some binary packets need to be ignored... - * - * @see self::_get_binary_packet() - * @return string - * @access private - */ - function _filter($payload) - { - switch (ord($payload[0])) { - case NET_SSH2_MSG_DISCONNECT: - $this->_string_shift($payload, 1); - extract(unpack('Nreason_code/Nlength', $this->_string_shift($payload, 8))); - $this->errors[] = 'SSH_MSG_DISCONNECT: ' . $this->disconnect_reasons[$reason_code] . "\r\n" . utf8_decode($this->_string_shift($payload, $length)); - $this->bitmap = 0; - return false; - case NET_SSH2_MSG_IGNORE: - $payload = $this->_get_binary_packet(); - break; - case NET_SSH2_MSG_DEBUG: - $this->_string_shift($payload, 2); - extract(unpack('Nlength', $this->_string_shift($payload, 4))); - $this->errors[] = 'SSH_MSG_DEBUG: ' . utf8_decode($this->_string_shift($payload, $length)); - $payload = $this->_get_binary_packet(); - break; - case NET_SSH2_MSG_UNIMPLEMENTED: - return false; - case NET_SSH2_MSG_KEXINIT: - if ($this->session_id !== false) { - if (!$this->_key_exchange($payload)) { - $this->bitmap = 0; - return false; - } - $payload = $this->_get_binary_packet(); - } - } - - // see http://tools.ietf.org/html/rfc4252#section-5.4; only called when the encryption has been activated and when we haven't already logged in - if (($this->bitmap & NET_SSH2_MASK_CONNECTED) && !($this->bitmap & NET_SSH2_MASK_LOGIN) && ord($payload[0]) == NET_SSH2_MSG_USERAUTH_BANNER) { - $this->_string_shift($payload, 1); - extract(unpack('Nlength', $this->_string_shift($payload, 4))); - $this->banner_message = utf8_decode($this->_string_shift($payload, $length)); - $payload = $this->_get_binary_packet(); - } - - // only called when we've already logged in - if (($this->bitmap & NET_SSH2_MASK_CONNECTED) && ($this->bitmap & NET_SSH2_MASK_LOGIN)) { - switch (ord($payload[0])) { - case NET_SSH2_MSG_GLOBAL_REQUEST: // see http://tools.ietf.org/html/rfc4254#section-4 - extract(unpack('Nlength', $this->_string_shift($payload, 4))); - $this->errors[] = 'SSH_MSG_GLOBAL_REQUEST: ' . $this->_string_shift($payload, $length); - - if (!$this->_send_binary_packet(pack('C', NET_SSH2_MSG_REQUEST_FAILURE))) { - return $this->_disconnect(NET_SSH2_DISCONNECT_BY_APPLICATION); - } - - $payload = $this->_get_binary_packet(); - break; - case NET_SSH2_MSG_CHANNEL_OPEN: // see http://tools.ietf.org/html/rfc4254#section-5.1 - $this->_string_shift($payload, 1); - extract(unpack('Nlength', $this->_string_shift($payload, 4))); - $data = $this->_string_shift($payload, $length); - extract(unpack('Nserver_channel', $this->_string_shift($payload, 4))); - switch ($data) { - case 'auth-agent': - case 'auth-agent@openssh.com': - if (isset($this->agent)) { - $new_channel = NET_SSH2_CHANNEL_AGENT_FORWARD; - - extract(unpack('Nremote_window_size', $this->_string_shift($payload, 4))); - extract(unpack('Nremote_maximum_packet_size', $this->_string_shift($payload, 4))); - - $this->packet_size_client_to_server[$new_channel] = $remote_window_size; - $this->window_size_server_to_client[$new_channel] = $remote_maximum_packet_size; - $this->window_size_client_to_server[$new_channel] = $this->window_size; - - $packet_size = 0x4000; - - $packet = pack( - 'CN4', - NET_SSH2_MSG_CHANNEL_OPEN_CONFIRMATION, - $server_channel, - $new_channel, - $packet_size, - $packet_size - ); - - $this->server_channels[$new_channel] = $server_channel; - $this->channel_status[$new_channel] = NET_SSH2_MSG_CHANNEL_OPEN_CONFIRMATION; - if (!$this->_send_binary_packet($packet)) { - return false; - } - } - break; - default: - $packet = pack( - 'CN3a*Na*', - NET_SSH2_MSG_REQUEST_FAILURE, - $server_channel, - NET_SSH2_OPEN_ADMINISTRATIVELY_PROHIBITED, - 0, - '', - 0, - '' - ); - - if (!$this->_send_binary_packet($packet)) { - return $this->_disconnect(NET_SSH2_DISCONNECT_BY_APPLICATION); - } - } - $payload = $this->_get_binary_packet(); - break; - case NET_SSH2_MSG_CHANNEL_WINDOW_ADJUST: - $this->_string_shift($payload, 1); - extract(unpack('Nchannel', $this->_string_shift($payload, 4))); - extract(unpack('Nwindow_size', $this->_string_shift($payload, 4))); - $this->window_size_client_to_server[$channel]+= $window_size; - - $payload = ($this->bitmap & NET_SSH2_MASK_WINDOW_ADJUST) ? true : $this->_get_binary_packet(); - } - } - - return $payload; - } - - /** - * Enable Quiet Mode - * - * Suppress stderr from output - * - * @access public - */ - function enableQuietMode() - { - $this->quiet_mode = true; - } - - /** - * Disable Quiet Mode - * - * Show stderr in output - * - * @access public - */ - function disableQuietMode() - { - $this->quiet_mode = false; - } - - /** - * Returns whether Quiet Mode is enabled or not - * - * @see self::enableQuietMode() - * @see self::disableQuietMode() - * - * @access public - * @return bool - */ - function isQuietModeEnabled() - { - return $this->quiet_mode; - } - - /** - * Enable request-pty when using exec() - * - * @access public - */ - function enablePTY() - { - $this->request_pty = true; - } - - /** - * Disable request-pty when using exec() - * - * @access public - */ - function disablePTY() - { - $this->request_pty = false; - } - - /** - * Returns whether request-pty is enabled or not - * - * @see self::enablePTY() - * @see self::disablePTY() - * - * @access public - * @return bool - */ - function isPTYEnabled() - { - return $this->request_pty; - } - - /** - * Gets channel data - * - * Returns the data as a string if it's available and false if not. - * - * @param $client_channel - * @return mixed - * @access private - */ - function _get_channel_packet($client_channel, $skip_extended = false) - { - if (!empty($this->channel_buffers[$client_channel])) { - return array_shift($this->channel_buffers[$client_channel]); - } - - while (true) { - if ($this->curTimeout) { - if ($this->curTimeout < 0) { - $this->is_timeout = true; - return true; - } - - $read = array($this->fsock); - $write = $except = null; - - $start = strtok(microtime(), ' ') + strtok(''); // http://php.net/microtime#61838 - $sec = floor($this->curTimeout); - $usec = 1000000 * ($this->curTimeout - $sec); - // on windows this returns a "Warning: Invalid CRT parameters detected" error - if (!@stream_select($read, $write, $except, $sec, $usec) && !count($read)) { - $this->is_timeout = true; - return true; - } - $elapsed = strtok(microtime(), ' ') + strtok('') - $start; - $this->curTimeout-= $elapsed; - } - - $response = $this->_get_binary_packet(); - if ($response === false) { - user_error('Connection closed by server'); - return false; - } - if ($client_channel == -1 && $response === true) { - return true; - } - if (!strlen($response)) { - return ''; - } - - extract(unpack('Ctype', $this->_string_shift($response, 1))); - - if ($type == NET_SSH2_MSG_CHANNEL_OPEN) { - extract(unpack('Nlength', $this->_string_shift($response, 4))); - } else { - extract(unpack('Nchannel', $this->_string_shift($response, 4))); - } - - // will not be setup yet on incoming channel open request - if (isset($channel) && isset($this->channel_status[$channel]) && isset($this->window_size_server_to_client[$channel])) { - $this->window_size_server_to_client[$channel]-= strlen($response); - - // resize the window, if appropriate - if ($this->window_size_server_to_client[$channel] < 0) { - $packet = pack('CNN', NET_SSH2_MSG_CHANNEL_WINDOW_ADJUST, $this->server_channels[$channel], $this->window_size); - if (!$this->_send_binary_packet($packet)) { - return false; - } - $this->window_size_server_to_client[$channel]+= $this->window_size; - } - - switch ($this->channel_status[$channel]) { - case NET_SSH2_MSG_CHANNEL_OPEN: - switch ($type) { - case NET_SSH2_MSG_CHANNEL_OPEN_CONFIRMATION: - extract(unpack('Nserver_channel', $this->_string_shift($response, 4))); - $this->server_channels[$channel] = $server_channel; - extract(unpack('Nwindow_size', $this->_string_shift($response, 4))); - if ($window_size < 0) { - $window_size&= 0x7FFFFFFF; - $window_size+= 0x80000000; - } - $this->window_size_client_to_server[$channel] = $window_size; - $temp = unpack('Npacket_size_client_to_server', $this->_string_shift($response, 4)); - $this->packet_size_client_to_server[$channel] = $temp['packet_size_client_to_server']; - $result = $client_channel == $channel ? true : $this->_get_channel_packet($client_channel, $skip_extended); - $this->_on_channel_open(); - return $result; - //case NET_SSH2_MSG_CHANNEL_OPEN_FAILURE: - default: - user_error('Unable to open channel'); - return $this->_disconnect(NET_SSH2_DISCONNECT_BY_APPLICATION); - } - break; - case NET_SSH2_MSG_CHANNEL_REQUEST: - switch ($type) { - case NET_SSH2_MSG_CHANNEL_SUCCESS: - return true; - case NET_SSH2_MSG_CHANNEL_FAILURE: - return false; - default: - user_error('Unable to fulfill channel request'); - return $this->_disconnect(NET_SSH2_DISCONNECT_BY_APPLICATION); - } - case NET_SSH2_MSG_CHANNEL_CLOSE: - return $type == NET_SSH2_MSG_CHANNEL_CLOSE ? true : $this->_get_channel_packet($client_channel, $skip_extended); - } - } - - // ie. $this->channel_status[$channel] == NET_SSH2_MSG_CHANNEL_DATA - - switch ($type) { - case NET_SSH2_MSG_CHANNEL_DATA: - /* - if ($channel == NET_SSH2_CHANNEL_EXEC) { - // SCP requires null packets, such as this, be sent. further, in the case of the ssh.com SSH server - // this actually seems to make things twice as fast. more to the point, the message right after - // SSH_MSG_CHANNEL_DATA (usually SSH_MSG_IGNORE) won't block for as long as it would have otherwise. - // in OpenSSH it slows things down but only by a couple thousandths of a second. - $this->_send_channel_packet($channel, chr(0)); - } - */ - extract(unpack('Nlength', $this->_string_shift($response, 4))); - $data = $this->_string_shift($response, $length); - - if ($channel == NET_SSH2_CHANNEL_AGENT_FORWARD) { - $agent_response = $this->agent->_forward_data($data); - if (!is_bool($agent_response)) { - $this->_send_channel_packet($channel, $agent_response); - } - break; - } - - if ($client_channel == $channel) { - return $data; - } - if (!isset($this->channel_buffers[$channel])) { - $this->channel_buffers[$channel] = array(); - } - $this->channel_buffers[$channel][] = $data; - break; - case NET_SSH2_MSG_CHANNEL_EXTENDED_DATA: - /* - if ($client_channel == NET_SSH2_CHANNEL_EXEC) { - $this->_send_channel_packet($client_channel, chr(0)); - } - */ - // currently, there's only one possible value for $data_type_code: NET_SSH2_EXTENDED_DATA_STDERR - extract(unpack('Ndata_type_code/Nlength', $this->_string_shift($response, 8))); - $data = $this->_string_shift($response, $length); - $this->stdErrorLog.= $data; - if ($skip_extended || $this->quiet_mode) { - break; - } - if ($client_channel == $channel) { - return $data; - } - if (!isset($this->channel_buffers[$channel])) { - $this->channel_buffers[$channel] = array(); - } - $this->channel_buffers[$channel][] = $data; - break; - case NET_SSH2_MSG_CHANNEL_REQUEST: - extract(unpack('Nlength', $this->_string_shift($response, 4))); - $value = $this->_string_shift($response, $length); - switch ($value) { - case 'exit-signal': - $this->_string_shift($response, 1); - extract(unpack('Nlength', $this->_string_shift($response, 4))); - $this->errors[] = 'SSH_MSG_CHANNEL_REQUEST (exit-signal): ' . $this->_string_shift($response, $length); - $this->_string_shift($response, 1); - extract(unpack('Nlength', $this->_string_shift($response, 4))); - if ($length) { - $this->errors[count($this->errors)].= "\r\n" . $this->_string_shift($response, $length); - } - - $this->_send_binary_packet(pack('CN', NET_SSH2_MSG_CHANNEL_EOF, $this->server_channels[$client_channel])); - $this->_send_binary_packet(pack('CN', NET_SSH2_MSG_CHANNEL_CLOSE, $this->server_channels[$channel])); - - $this->channel_status[$channel] = NET_SSH2_MSG_CHANNEL_EOF; - - break; - case 'exit-status': - extract(unpack('Cfalse/Nexit_status', $this->_string_shift($response, 5))); - $this->exit_status = $exit_status; - - // "The client MAY ignore these messages." - // -- http://tools.ietf.org/html/rfc4254#section-6.10 - - break; - default: - // "Some systems may not implement signals, in which case they SHOULD ignore this message." - // -- http://tools.ietf.org/html/rfc4254#section-6.9 - break; - } - break; - case NET_SSH2_MSG_CHANNEL_CLOSE: - $this->curTimeout = 0; - - if ($this->bitmap & NET_SSH2_MASK_SHELL) { - $this->bitmap&= ~NET_SSH2_MASK_SHELL; - } - if ($this->channel_status[$channel] != NET_SSH2_MSG_CHANNEL_EOF) { - $this->_send_binary_packet(pack('CN', NET_SSH2_MSG_CHANNEL_CLOSE, $this->server_channels[$channel])); - } - - $this->channel_status[$channel] = NET_SSH2_MSG_CHANNEL_CLOSE; - if ($client_channel == $channel) { - return true; - } - case NET_SSH2_MSG_CHANNEL_EOF: - break; - default: - user_error('Error reading channel data'); - return $this->_disconnect(NET_SSH2_DISCONNECT_BY_APPLICATION); - } - } - } - - /** - * Sends Binary Packets - * - * See '6. Binary Packet Protocol' of rfc4253 for more info. - * - * @param string $data - * @param string $logged - * @see self::_get_binary_packet() - * @return bool - * @access private - */ - function _send_binary_packet($data, $logged = null) - { - if (!is_resource($this->fsock) || feof($this->fsock)) { - user_error('Connection closed prematurely'); - $this->bitmap = 0; - return false; - } - - //if ($this->compress) { - // // the -4 removes the checksum: - // // http://php.net/function.gzcompress#57710 - // $data = substr(gzcompress($data), 0, -4); - //} - - // 4 (packet length) + 1 (padding length) + 4 (minimal padding amount) == 9 - $packet_length = strlen($data) + 9; - // round up to the nearest $this->encrypt_block_size - $packet_length+= (($this->encrypt_block_size - 1) * $packet_length) % $this->encrypt_block_size; - // subtracting strlen($data) is obvious - subtracting 5 is necessary because of packet_length and padding_length - $padding_length = $packet_length - strlen($data) - 5; - $padding = crypt_random_string($padding_length); - - // we subtract 4 from packet_length because the packet_length field isn't supposed to include itself - $packet = pack('NCa*', $packet_length - 4, $padding_length, $data . $padding); - - $hmac = $this->hmac_create !== false ? $this->hmac_create->hash(pack('Na*', $this->send_seq_no, $packet)) : ''; - $this->send_seq_no++; - - if ($this->encrypt !== false) { - $packet = $this->encrypt->encrypt($packet); - } - - $packet.= $hmac; - - $start = strtok(microtime(), ' ') + strtok(''); // http://php.net/microtime#61838 - $result = strlen($packet) == fputs($this->fsock, $packet); - $stop = strtok(microtime(), ' ') + strtok(''); - - if (defined('NET_SSH2_LOGGING')) { - $current = strtok(microtime(), ' ') + strtok(''); - $message_number = isset($this->message_numbers[ord($data[0])]) ? $this->message_numbers[ord($data[0])] : 'UNKNOWN (' . ord($data[0]) . ')'; - $message_number = '-> ' . $message_number . - ' (since last: ' . round($current - $this->last_packet, 4) . ', network: ' . round($stop - $start, 4) . 's)'; - $this->_append_log($message_number, isset($logged) ? $logged : $data); - $this->last_packet = $current; - } - - return $result; - } - - /** - * Logs data packets - * - * Makes sure that only the last 1MB worth of packets will be logged - * - * @param string $data - * @access private - */ - function _append_log($message_number, $message) - { - // remove the byte identifying the message type from all but the first two messages (ie. the identification strings) - if (strlen($message_number) > 2) { - $this->_string_shift($message); - } - - switch (NET_SSH2_LOGGING) { - // useful for benchmarks - case NET_SSH2_LOG_SIMPLE: - $this->message_number_log[] = $message_number; - break; - // the most useful log for SSH2 - case NET_SSH2_LOG_COMPLEX: - $this->message_number_log[] = $message_number; - $this->log_size+= strlen($message); - $this->message_log[] = $message; - while ($this->log_size > NET_SSH2_LOG_MAX_SIZE) { - $this->log_size-= strlen(array_shift($this->message_log)); - array_shift($this->message_number_log); - } - break; - // dump the output out realtime; packets may be interspersed with non packets, - // passwords won't be filtered out and select other packets may not be correctly - // identified - case NET_SSH2_LOG_REALTIME: - switch (PHP_SAPI) { - case 'cli': - $start = $stop = "\r\n"; - break; - default: - $start = '<pre>'; - $stop = '</pre>'; - } - echo $start . $this->_format_log(array($message), array($message_number)) . $stop; - @flush(); - @ob_flush(); - break; - // basically the same thing as NET_SSH2_LOG_REALTIME with the caveat that NET_SSH2_LOG_REALTIME_FILE - // needs to be defined and that the resultant log file will be capped out at NET_SSH2_LOG_MAX_SIZE. - // the earliest part of the log file is denoted by the first <<< START >>> and is not going to necessarily - // at the beginning of the file - case NET_SSH2_LOG_REALTIME_FILE: - if (!isset($this->realtime_log_file)) { - // PHP doesn't seem to like using constants in fopen() - $filename = NET_SSH2_LOG_REALTIME_FILENAME; - $fp = fopen($filename, 'w'); - $this->realtime_log_file = $fp; - } - if (!is_resource($this->realtime_log_file)) { - break; - } - $entry = $this->_format_log(array($message), array($message_number)); - if ($this->realtime_log_wrap) { - $temp = "<<< START >>>\r\n"; - $entry.= $temp; - fseek($this->realtime_log_file, ftell($this->realtime_log_file) - strlen($temp)); - } - $this->realtime_log_size+= strlen($entry); - if ($this->realtime_log_size > NET_SSH2_LOG_MAX_SIZE) { - fseek($this->realtime_log_file, 0); - $this->realtime_log_size = strlen($entry); - $this->realtime_log_wrap = true; - } - fputs($this->realtime_log_file, $entry); - } - } - - /** - * Sends channel data - * - * Spans multiple SSH_MSG_CHANNEL_DATAs if appropriate - * - * @param int $client_channel - * @param string $data - * @return bool - * @access private - */ - function _send_channel_packet($client_channel, $data) - { - while (strlen($data)) { - if (!$this->window_size_client_to_server[$client_channel]) { - $this->bitmap^= NET_SSH2_MASK_WINDOW_ADJUST; - // using an invalid channel will let the buffers be built up for the valid channels - $this->_get_channel_packet(-1); - $this->bitmap^= NET_SSH2_MASK_WINDOW_ADJUST; - } - - /* The maximum amount of data allowed is determined by the maximum - packet size for the channel, and the current window size, whichever - is smaller. - -- http://tools.ietf.org/html/rfc4254#section-5.2 */ - $max_size = min( - $this->packet_size_client_to_server[$client_channel], - $this->window_size_client_to_server[$client_channel] - ); - - $temp = $this->_string_shift($data, $max_size); - $packet = pack( - 'CN2a*', - NET_SSH2_MSG_CHANNEL_DATA, - $this->server_channels[$client_channel], - strlen($temp), - $temp - ); - $this->window_size_client_to_server[$client_channel]-= strlen($temp); - if (!$this->_send_binary_packet($packet)) { - return false; - } - } - - return true; - } - - /** - * Closes and flushes a channel - * - * Net_SSH2 doesn't properly close most channels. For exec() channels are normally closed by the server - * and for SFTP channels are presumably closed when the client disconnects. This functions is intended - * for SCP more than anything. - * - * @param int $client_channel - * @param bool $want_reply - * @return bool - * @access private - */ - function _close_channel($client_channel, $want_reply = false) - { - // see http://tools.ietf.org/html/rfc4254#section-5.3 - - $this->_send_binary_packet(pack('CN', NET_SSH2_MSG_CHANNEL_EOF, $this->server_channels[$client_channel])); - - if (!$want_reply) { - $this->_send_binary_packet(pack('CN', NET_SSH2_MSG_CHANNEL_CLOSE, $this->server_channels[$client_channel])); - } - - $this->channel_status[$client_channel] = NET_SSH2_MSG_CHANNEL_CLOSE; - - $this->curTimeout = 0; - - while (!is_bool($this->_get_channel_packet($client_channel))) { - } - - if ($want_reply) { - $this->_send_binary_packet(pack('CN', NET_SSH2_MSG_CHANNEL_CLOSE, $this->server_channels[$client_channel])); - } - - if ($this->bitmap & NET_SSH2_MASK_SHELL) { - $this->bitmap&= ~NET_SSH2_MASK_SHELL; - } - } - - /** - * Disconnect - * - * @param int $reason - * @return bool - * @access private - */ - function _disconnect($reason) - { - if ($this->bitmap & NET_SSH2_MASK_CONNECTED) { - $data = pack('CNNa*Na*', NET_SSH2_MSG_DISCONNECT, $reason, 0, '', 0, ''); - $this->_send_binary_packet($data); - $this->bitmap = 0; - fclose($this->fsock); - return false; - } - } - - /** - * String Shift - * - * Inspired by array_shift - * - * @param string $string - * @param int $index - * @return string - * @access private - */ - function _string_shift(&$string, $index = 1) - { - $substr = substr($string, 0, $index); - $string = substr($string, $index); - return $substr; - } - - /** - * Define Array - * - * Takes any number of arrays whose indices are integers and whose values are strings and defines a bunch of - * named constants from it, using the value as the name of the constant and the index as the value of the constant. - * If any of the constants that would be defined already exists, none of the constants will be defined. - * - * @param array $array - * @access private - */ - function _define_array() - { - $args = func_get_args(); - foreach ($args as $arg) { - foreach ($arg as $key => $value) { - if (!defined($value)) { - define($value, $key); - } else { - break 2; - } - } - } - } - - /** - * Returns a log of the packets that have been sent and received. - * - * Returns a string if NET_SSH2_LOGGING == NET_SSH2_LOG_COMPLEX, an array if NET_SSH2_LOGGING == NET_SSH2_LOG_SIMPLE and false if !defined('NET_SSH2_LOGGING') - * - * @access public - * @return array|false|string - */ - function getLog() - { - if (!defined('NET_SSH2_LOGGING')) { - return false; - } - - switch (NET_SSH2_LOGGING) { - case NET_SSH2_LOG_SIMPLE: - return $this->message_number_log; - break; - case NET_SSH2_LOG_COMPLEX: - return $this->_format_log($this->message_log, $this->message_number_log); - break; - default: - return false; - } - } - - /** - * Formats a log for printing - * - * @param array $message_log - * @param array $message_number_log - * @access private - * @return string - */ - function _format_log($message_log, $message_number_log) - { - $output = ''; - for ($i = 0; $i < count($message_log); $i++) { - $output.= $message_number_log[$i] . "\r\n"; - $current_log = $message_log[$i]; - $j = 0; - do { - if (strlen($current_log)) { - $output.= str_pad(dechex($j), 7, '0', STR_PAD_LEFT) . '0 '; - } - $fragment = $this->_string_shift($current_log, $this->log_short_width); - $hex = substr(preg_replace_callback('#.#s', array($this, '_format_log_helper'), $fragment), strlen($this->log_boundary)); - // replace non ASCII printable characters with dots - // http://en.wikipedia.org/wiki/ASCII#ASCII_printable_characters - // also replace < with a . since < messes up the output on web browsers - $raw = preg_replace('#[^\x20-\x7E]|<#', '.', $fragment); - $output.= str_pad($hex, $this->log_long_width - $this->log_short_width, ' ') . $raw . "\r\n"; - $j++; - } while (strlen($current_log)); - $output.= "\r\n"; - } - - return $output; - } - - /** - * Helper function for _format_log - * - * For use with preg_replace_callback() - * - * @param array $matches - * @access private - * @return string - */ - function _format_log_helper($matches) - { - return $this->log_boundary . str_pad(dechex(ord($matches[0])), 2, '0', STR_PAD_LEFT); - } - - /** - * Helper function for agent->_on_channel_open() - * - * Used when channels are created to inform agent - * of said channel opening. Must be called after - * channel open confirmation received - * - * @access private - */ - function _on_channel_open() - { - if (isset($this->agent)) { - $this->agent->_on_channel_open($this); - } - } - - /** - * Returns the first value of the intersection of two arrays or false if - * the intersection is empty. The order is defined by the first parameter. - * - * @param array $array1 - * @param array $array2 - * @return mixed False if intersection is empty, else intersected value. - * @access private - */ - function _array_intersect_first($array1, $array2) - { - foreach ($array1 as $value) { - if (in_array($value, $array2)) { - return $value; - } - } - return false; - } - - /** - * Returns all errors - * - * @return string[] - * @access public - */ - function getErrors() - { - return $this->errors; - } - - /** - * Returns the last error - * - * @return string - * @access public - */ - function getLastError() - { - $count = count($this->errors); - - if ($count > 0) { - return $this->errors[$count - 1]; - } - } - - /** - * Return the server identification. - * - * @return string - * @access public - */ - function getServerIdentification() - { - $this->_connect(); - - return $this->server_identifier; - } - - /** - * Return a list of the key exchange algorithms the server supports. - * - * @return array - * @access public - */ - function getKexAlgorithms() - { - $this->_connect(); - - return $this->kex_algorithms; - } - - /** - * Return a list of the host key (public key) algorithms the server supports. - * - * @return array - * @access public - */ - function getServerHostKeyAlgorithms() - { - $this->_connect(); - - return $this->server_host_key_algorithms; - } - - /** - * Return a list of the (symmetric key) encryption algorithms the server supports, when receiving stuff from the client. - * - * @return array - * @access public - */ - function getEncryptionAlgorithmsClient2Server() - { - $this->_connect(); - - return $this->encryption_algorithms_client_to_server; - } - - /** - * Return a list of the (symmetric key) encryption algorithms the server supports, when sending stuff to the client. - * - * @return array - * @access public - */ - function getEncryptionAlgorithmsServer2Client() - { - $this->_connect(); - - return $this->encryption_algorithms_server_to_client; - } - - /** - * Return a list of the MAC algorithms the server supports, when receiving stuff from the client. - * - * @return array - * @access public - */ - function getMACAlgorithmsClient2Server() - { - $this->_connect(); - - return $this->mac_algorithms_client_to_server; - } - - /** - * Return a list of the MAC algorithms the server supports, when sending stuff to the client. - * - * @return array - * @access public - */ - function getMACAlgorithmsServer2Client() - { - $this->_connect(); - - return $this->mac_algorithms_server_to_client; - } - - /** - * Return a list of the compression algorithms the server supports, when receiving stuff from the client. - * - * @return array - * @access public - */ - function getCompressionAlgorithmsClient2Server() - { - $this->_connect(); - - return $this->compression_algorithms_client_to_server; - } - - /** - * Return a list of the compression algorithms the server supports, when sending stuff to the client. - * - * @return array - * @access public - */ - function getCompressionAlgorithmsServer2Client() - { - $this->_connect(); - - return $this->compression_algorithms_server_to_client; - } - - /** - * Return a list of the languages the server supports, when sending stuff to the client. - * - * @return array - * @access public - */ - function getLanguagesServer2Client() - { - $this->_connect(); - - return $this->languages_server_to_client; - } - - /** - * Return a list of the languages the server supports, when receiving stuff from the client. - * - * @return array - * @access public - */ - function getLanguagesClient2Server() - { - $this->_connect(); - - return $this->languages_client_to_server; - } - - /** - * Returns the banner message. - * - * Quoting from the RFC, "in some jurisdictions, sending a warning message before - * authentication may be relevant for getting legal protection." - * - * @return string - * @access public - */ - function getBannerMessage() - { - return $this->banner_message; - } - - /** - * Returns the server public host key. - * - * Caching this the first time you connect to a server and checking the result on subsequent connections - * is recommended. Returns false if the server signature is not signed correctly with the public host key. - * - * @return mixed - * @access public - */ - function getServerPublicHostKey() - { - if (!($this->bitmap & NET_SSH2_MASK_CONSTRUCTOR)) { - if (!$this->_connect()) { - return false; - } - } - - $signature = $this->signature; - $server_public_host_key = $this->server_public_host_key; - - extract(unpack('Nlength', $this->_string_shift($server_public_host_key, 4))); - $this->_string_shift($server_public_host_key, $length); - - if ($this->signature_validated) { - return $this->bitmap ? - $this->signature_format . ' ' . base64_encode($this->server_public_host_key) : - false; - } - - $this->signature_validated = true; - - switch ($this->signature_format) { - case 'ssh-dss': - $zero = new Math_BigInteger(); - - $temp = unpack('Nlength', $this->_string_shift($server_public_host_key, 4)); - $p = new Math_BigInteger($this->_string_shift($server_public_host_key, $temp['length']), -256); - - $temp = unpack('Nlength', $this->_string_shift($server_public_host_key, 4)); - $q = new Math_BigInteger($this->_string_shift($server_public_host_key, $temp['length']), -256); - - $temp = unpack('Nlength', $this->_string_shift($server_public_host_key, 4)); - $g = new Math_BigInteger($this->_string_shift($server_public_host_key, $temp['length']), -256); - - $temp = unpack('Nlength', $this->_string_shift($server_public_host_key, 4)); - $y = new Math_BigInteger($this->_string_shift($server_public_host_key, $temp['length']), -256); - - /* The value for 'dss_signature_blob' is encoded as a string containing - r, followed by s (which are 160-bit integers, without lengths or - padding, unsigned, and in network byte order). */ - $temp = unpack('Nlength', $this->_string_shift($signature, 4)); - if ($temp['length'] != 40) { - user_error('Invalid signature'); - return $this->_disconnect(NET_SSH2_DISCONNECT_KEY_EXCHANGE_FAILED); - } - - $r = new Math_BigInteger($this->_string_shift($signature, 20), 256); - $s = new Math_BigInteger($this->_string_shift($signature, 20), 256); - - switch (true) { - case $r->equals($zero): - case $r->compare($q) >= 0: - case $s->equals($zero): - case $s->compare($q) >= 0: - user_error('Invalid signature'); - return $this->_disconnect(NET_SSH2_DISCONNECT_KEY_EXCHANGE_FAILED); - } - - $w = $s->modInverse($q); - - $u1 = $w->multiply(new Math_BigInteger(sha1($this->exchange_hash), 16)); - list(, $u1) = $u1->divide($q); - - $u2 = $w->multiply($r); - list(, $u2) = $u2->divide($q); - - $g = $g->modPow($u1, $p); - $y = $y->modPow($u2, $p); - - $v = $g->multiply($y); - list(, $v) = $v->divide($p); - list(, $v) = $v->divide($q); - - if (!$v->equals($r)) { - user_error('Bad server signature'); - return $this->_disconnect(NET_SSH2_DISCONNECT_HOST_KEY_NOT_VERIFIABLE); - } - - break; - case 'ssh-rsa': - $temp = unpack('Nlength', $this->_string_shift($server_public_host_key, 4)); - $e = new Math_BigInteger($this->_string_shift($server_public_host_key, $temp['length']), -256); - - $temp = unpack('Nlength', $this->_string_shift($server_public_host_key, 4)); - $rawN = $this->_string_shift($server_public_host_key, $temp['length']); - $n = new Math_BigInteger($rawN, -256); - $nLength = strlen(ltrim($rawN, "\0")); - - /* - $temp = unpack('Nlength', $this->_string_shift($signature, 4)); - $signature = $this->_string_shift($signature, $temp['length']); - - if (!class_exists('Crypt_RSA')) { - include_once 'Crypt/RSA.php'; - } - - $rsa = new Crypt_RSA(); - $rsa->setSignatureMode(CRYPT_RSA_SIGNATURE_PKCS1); - $rsa->loadKey(array('e' => $e, 'n' => $n), CRYPT_RSA_PUBLIC_FORMAT_RAW); - if (!$rsa->verify($this->exchange_hash, $signature)) { - user_error('Bad server signature'); - return $this->_disconnect(NET_SSH2_DISCONNECT_HOST_KEY_NOT_VERIFIABLE); - } - */ - - $temp = unpack('Nlength', $this->_string_shift($signature, 4)); - $s = new Math_BigInteger($this->_string_shift($signature, $temp['length']), 256); - - // validate an RSA signature per "8.2 RSASSA-PKCS1-v1_5", "5.2.2 RSAVP1", and "9.1 EMSA-PSS" in the - // following URL: - // ftp://ftp.rsasecurity.com/pub/pkcs/pkcs-1/pkcs-1v2-1.pdf - - // also, see SSHRSA.c (rsa2_verifysig) in PuTTy's source. - - if ($s->compare(new Math_BigInteger()) < 0 || $s->compare($n->subtract(new Math_BigInteger(1))) > 0) { - user_error('Invalid signature'); - return $this->_disconnect(NET_SSH2_DISCONNECT_KEY_EXCHANGE_FAILED); - } - - $s = $s->modPow($e, $n); - $s = $s->toBytes(); - - $h = pack('N4H*', 0x00302130, 0x0906052B, 0x0E03021A, 0x05000414, sha1($this->exchange_hash)); - $h = chr(0x01) . str_repeat(chr(0xFF), $nLength - 2 - strlen($h)) . $h; - - if ($s != $h) { - user_error('Bad server signature'); - return $this->_disconnect(NET_SSH2_DISCONNECT_HOST_KEY_NOT_VERIFIABLE); - } - break; - default: - user_error('Unsupported signature format'); - return $this->_disconnect(NET_SSH2_DISCONNECT_HOST_KEY_NOT_VERIFIABLE); - } - - return $this->signature_format . ' ' . base64_encode($this->server_public_host_key); - } - - /** - * Returns the exit status of an SSH command or false. - * - * @return false|int - * @access public - */ - function getExitStatus() - { - if (is_null($this->exit_status)) { - return false; - } - return $this->exit_status; - } - - /** - * Returns the number of columns for the terminal window size. - * - * @return int - * @access public - */ - function getWindowColumns() - { - return $this->windowColumns; - } - - /** - * Returns the number of rows for the terminal window size. - * - * @return int - * @access public - */ - function getWindowRows() - { - return $this->windowRows; - } - - /** - * Sets the number of columns for the terminal window size. - * - * @param int $value - * @access public - */ - function setWindowColumns($value) - { - $this->windowColumns = $value; - } - - /** - * Sets the number of rows for the terminal window size. - * - * @param int $value - * @access public - */ - function setWindowRows($value) - { - $this->windowRows = $value; - } - - /** - * Sets the number of columns and rows for the terminal window size. - * - * @param int $columns - * @param int $rows - * @access public - */ - function setWindowSize($columns = 80, $rows = 24) - { - $this->windowColumns = $columns; - $this->windowRows = $rows; - } -} |