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SSH2: connect to server in login() function

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this change will make it so some parameters can be set after the
Net_SSH2 object has been created. eg. instead of doing
define('NET_SSH2_LOGGING', NET_SSH2_LOG_COMPLEX) one can now do
$ssh->setLogging(...) or something.
This commit is contained in:
terrafrost 2014-04-06 23:45:25 -05:00
parent a455c1771e
commit a14e71f38b
1 changed files with 70 additions and 20 deletions
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90
phpseclib/Net/SSH2.php
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@ -73,10 +73,11 @@
* @access private
*/
define('NET_SSH2_MASK_CONSTRUCTOR', 0x00000001);
define('NET_SSH2_MASK_LOGIN_REQ', 0x00000002);
define('NET_SSH2_MASK_LOGIN', 0x00000004);
define('NET_SSH2_MASK_SHELL', 0x00000008);
define('NET_SSH2_MASK_WINDOW_ADJUST', 0X00000010);
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);
/**#@-*/
/**#@+
@ -669,6 +670,7 @@ class Net_SSH2
/**
* Time of first network activity
*
* @var Integer
* @access private
*/
var $last_packet;
@ -684,6 +686,7 @@ class Net_SSH2
/**
* Flag to request a PTY when using exec()
*
* @var Boolean
* @see Net_SSH2::enablePTY()
* @access private
*/
@ -692,6 +695,7 @@ class Net_SSH2
/**
* Flag set while exec() is running when using enablePTY()
*
* @var Boolean
* @access private
*/
var $in_request_pty_exec = false;
@ -699,6 +703,7 @@ class Net_SSH2
/**
* Flag set after startSubsystem() is called
*
* @var Boolean
* @access private
*/
var $in_subsystem;
@ -706,6 +711,7 @@ class Net_SSH2
/**
* Contents of stdError
*
* @var String
* @access private
*/
var $stdErrorLog;
@ -714,6 +720,7 @@ class Net_SSH2
* The Last Interactive Response
*
* @see Net_SSH2::_keyboard_interactive_process()
* @var String
* @access private
*/
var $last_interactive_response = '';
@ -722,6 +729,7 @@ class Net_SSH2
* Keyboard Interactive Request / Responses
*
* @see Net_SSH2::_keyboard_interactive_process()
* @var Array
* @access private
*/
var $keyboard_requests_responses = array();
@ -734,6 +742,7 @@ class Net_SSH2
*
* @see Net_SSH2::_filter()
* @see Net_SSH2::getBannerMessage()
* @var String
* @access private
*/
var $banner_message = '';
@ -741,7 +750,8 @@ class Net_SSH2
/**
* Did read() timeout or return normally?
*
* @see Net_SSH2::isTimeout
* @see Net_SSH2::isTimeout()
* @var Boolean
* @access private
*/
var $is_timeout = false;
@ -750,6 +760,7 @@ class Net_SSH2
* Log Boundary
*
* @see Net_SSH2::_format_log
* @var String
* @access private
*/
var $log_boundary = ':';
@ -758,6 +769,7 @@ class Net_SSH2
* Log Long Width
*
* @see Net_SSH2::_format_log
* @var Integer
* @access private
*/
var $log_long_width = 65;
@ -766,10 +778,29 @@ class Net_SSH2
* Log Short Width
*
* @see Net_SSH2::_format_log
* @var Integer
* @access private
*/
var $log_short_width = 16;
/**
* Hostname
*
* @see Net_SSH2::login()
* @var String
* @access private
*/
var $host;
/**
* Port Number
*
* @see Net_SSH2::login()
* @var Integer
* @access private
*/
var $port;
/**
* Default Constructor.
*
@ -797,7 +828,6 @@ class Net_SSH2
include_once 'Crypt/Hash.php';
}
$this->last_packet = strtok(microtime(), ' ') + strtok(''); // == microtime(true) in PHP5
$this->message_numbers = array(
1 => 'NET_SSH2_MSG_DISCONNECT',
2 => 'NET_SSH2_MSG_IGNORE',
@ -868,11 +898,22 @@ class Net_SSH2
61 => 'NET_SSH2_MSG_USERAUTH_INFO_RESPONSE')
);
$this->host = $host;
$this->port = $port;
$this->timeout = $timeout;
}
function _connect()
{
$timeout = $this->timeout;
$this->last_packet = strtok(microtime(), ' ') + strtok(''); // == microtime(true) in PHP5
$start = strtok(microtime(), ' ') + strtok(''); // http://php.net/microtime#61838
$this->fsock = @fsockopen($host, $port, $errno, $errstr, $timeout);
$this->fsock = @fsockopen($this->host, $this->port, $errno, $errstr, $timeout);
if (!$this->fsock) {
user_error(rtrim("Cannot connect to $host. Error $errno. $errstr"));
return;
user_error(rtrim("Cannot connect to $this->host:$this->port. Error $errno. $errstr"));
return false;
}
$elapsed = strtok(microtime(), ' ') + strtok('') - $start;
@ -880,7 +921,7 @@ class Net_SSH2
if ($timeout <= 0) {
user_error(rtrim("Cannot connect to $host. Timeout error"));
return;
return false;
}
$read = array($this->fsock);
@ -893,7 +934,7 @@ class Net_SSH2
// the !count() is done as a workaround for <https://bugs.php.net/42682>
if (!@stream_select($read, $write, $except, $sec, $usec) && !count($read)) {
user_error(rtrim("Cannot connect to $host. Banner timeout"));
return;
return false;
}
/* According to the SSH2 specs,
@ -932,7 +973,7 @@ class Net_SSH2
if ($matches[1] != '1.99' && $matches[1] != '2.0') {
user_error("Cannot connect to SSH $matches[1] servers");
return;
return false;
}
fputs($this->fsock, $this->identifier . "\r\n");
@ -940,19 +981,21 @@ class Net_SSH2
$response = $this->_get_binary_packet();
if ($response === false) {
user_error('Connection closed by server');
return;
return false;
}
if (ord($response[0]) != NET_SSH2_MSG_KEXINIT) {
user_error('Expected SSH_MSG_KEXINIT');
return;
return false;
}
if (!$this->_key_exchange($response)) {
return;
return false;
}
$this->bitmap = NET_SSH2_MASK_CONSTRUCTOR;
$this->bitmap = NET_SSH2_MASK_CONNECTED;
return true;
}
/**
@ -1694,6 +1737,13 @@ class Net_SSH2
*/
function login($username)
{
if (!($this->bitmap & NET_SSH2_MASK_CONSTRUCTOR)) {
$this->bitmap != NET_SSH2_MASK_CONSTRUCTOR;
if (!$this->_connect()) {
return false;
}
}
$args = func_get_args();
return call_user_func_array(array(&$this, '_login'), $args);
}
@ -1735,7 +1785,7 @@ class Net_SSH2
*/
function _login_helper($username, $password = null)
{
if (!($this->bitmap & NET_SSH2_MASK_CONSTRUCTOR)) {
if (!($this->bitmap & NET_SSH2_MASK_CONNECTED)) {
return false;
}
@ -2687,7 +2737,7 @@ class Net_SSH2
}
// see http://tools.ietf.org/html/rfc4252#section-5.4; only called when the encryption has been activated and when we haven't already logged in
if (($this->bitmap & NET_SSH2_MASK_CONSTRUCTOR) && !($this->bitmap & NET_SSH2_MASK_LOGIN) && ord($payload[0]) == NET_SSH2_MSG_USERAUTH_BANNER) {
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, $length));
@ -2695,7 +2745,7 @@ class Net_SSH2
}
// only called when we've already logged in
if (($this->bitmap & NET_SSH2_MASK_CONSTRUCTOR) && ($this->bitmap & NET_SSH2_MASK_LOGIN)) {
if (($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
$this->_string_shift($payload, 1);
@ -2907,7 +2957,7 @@ class Net_SSH2
// 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;
$this->stdErrorLog.= $data;
if ($skip_extended || $this->quiet_mode) {
break;
}