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Use enablePTY() to get a PTY with exec() calls. While exec() is running

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you can use read() and write() to interact with the shell.
This commit is contained in:
Mike Kruk 2013-02-08 17:04:52 -05:00
parent 93f9922410
commit d7e4678fc4
1 changed files with 74 additions and 3 deletions
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77
phpseclib/Net/SSH2.php
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@ -717,6 +717,21 @@ class Net_SSH2 {
*/
var $exit_status;
/**
* Flag to request a PTY when using exec()
*
* @see Net_SSH2::enablePTY()
* @access private
*/
var $request_pty = false;
/**
* Flag set while exec() is running when using enablePTY()
*
* @access private
*/
var $in_request_pty_exec = false;
/**
* Default Constructor.
*
@ -1816,6 +1831,34 @@ class Net_SSH2 {
return false;
}
if ($this->request_pty === true) {
$terminal_modes = pack('C', NET_SSH2_TTY_OP_END);
$packet = pack('CNNa*CNa*N5a*',
NET_SSH2_MSG_CHANNEL_REQUEST, $this->server_channels[NET_SSH2_CHANNEL_EXEC], strlen('pty-req'), 'pty-req', 1, strlen('vt100'), 'vt100',
80, 24, 0, 0, strlen($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
@ -1840,7 +1883,7 @@ class Net_SSH2 {
$this->channel_status[NET_SSH2_CHANNEL_EXEC] = NET_SSH2_MSG_CHANNEL_DATA;
if (!$block) {
if (!$block || $this->in_request_pty_exec) {
return true;
}
@ -1868,6 +1911,10 @@ class Net_SSH2 {
*/
function _initShell()
{
if ($this->in_request_pty_exec === true) {
return true;
}
$this->window_size_client_to_server[NET_SSH2_CHANNEL_SHELL] = 0x7FFFFFFF;
$packet_size = 0x4000;
@ -1957,6 +2004,8 @@ class Net_SSH2 {
return false;
}
$channel = $this->in_request_pty_exec ? NET_SSH2_CHANNEL_EXEC : NET_SSH2_CHANNEL_SHELL;
$match = $expect;
while (true) {
if ($mode == NET_SSH2_READ_REGEX) {
@ -1967,8 +2016,9 @@ class Net_SSH2 {
if ($pos !== false) {
return $this->_string_shift($this->interactiveBuffer, $pos + strlen($match));
}
$response = $this->_get_channel_packet(NET_SSH2_CHANNEL_SHELL);
$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;
}
@ -1996,7 +2046,8 @@ class Net_SSH2 {
return false;
}
return $this->_send_channel_packet(NET_SSH2_CHANNEL_SHELL, $cmd);
$channel = $this->in_request_pty_exec ? NET_SSH2_CHANNEL_EXEC : NET_SSH2_CHANNEL_SHELL;
return $this->_send_channel_packet($channel, $cmd);
}
/**
@ -2219,6 +2270,26 @@ class Net_SSH2 {
$this->quiet_mode = false;
}
/**
* 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;
}
/**
* Gets channel data
*