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SSH2: more channel handling updates

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terrafrost 2017-12-25 10:26:26 -06:00
parent c340d62548
commit 46b5bd413a
1 changed files with 73 additions and 70 deletions
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101
phpseclib/Net/SSH2.php
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@ -3726,7 +3726,8 @@ class Net_SSH2
$this->window_size_server_to_client[$channel]+= $this->window_size; $this->window_size_server_to_client[$channel]+= $this->window_size;
} }
if ($type == NET_SSH2_MSG_CHANNEL_EXTENDED_DATA) { switch ($type) {
case NET_SSH2_MSG_CHANNEL_EXTENDED_DATA:
/* /*
if ($client_channel == NET_SSH2_CHANNEL_EXEC) { if ($client_channel == NET_SSH2_CHANNEL_EXEC) {
$this->_send_channel_packet($client_channel, chr(0)); $this->_send_channel_packet($client_channel, chr(0));
@ -3740,7 +3741,7 @@ class Net_SSH2
$data = $this->_string_shift($response, $length); $data = $this->_string_shift($response, $length);
$this->stdErrorLog.= $data; $this->stdErrorLog.= $data;
if ($skip_extended || $this->quiet_mode) { if ($skip_extended || $this->quiet_mode) {
continue; continue 2;
} }
if ($client_channel == $channel && $this->channel_status[$channel] == NET_SSH2_MSG_CHANNEL_DATA) { if ($client_channel == $channel && $this->channel_status[$channel] == NET_SSH2_MSG_CHANNEL_DATA) {
return $data; return $data;
@ -3750,7 +3751,55 @@ class Net_SSH2
} }
$this->channel_buffers[$channel][] = $data; $this->channel_buffers[$channel][] = $data;
continue; continue 2;
case NET_SSH2_MSG_CHANNEL_REQUEST:
if ($this->channel_status[$channel] == NET_SSH2_MSG_CHANNEL_CLOSE) {
continue 2;
}
if (strlen($response) < 4) {
return false;
}
extract(unpack('Nlength', $this->_string_shift($response, 4)));
$value = $this->_string_shift($response, $length);
switch ($value) {
case 'exit-signal':
$this->_string_shift($response, 1);
if (strlen($response) < 4) {
return false;
}
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);
if (strlen($response) < 4) {
return false;
}
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;
continue 3;
case 'exit-status':
if (strlen($response) < 5) {
return false;
}
extract(unpack('Cfalse/Nexit_status', $this->_string_shift($response, 5)));
$this->exit_status = $exit_status;
// "The client MAY ignore these messages."
// -- http://tools.ietf.org/html/rfc4254#section-6.10
continue 3;
default:
// "Some systems may not implement signals, in which case they SHOULD ignore this message."
// -- http://tools.ietf.org/html/rfc4254#section-6.9
continue 3;
}
} }
switch ($this->channel_status[$channel]) { switch ($this->channel_status[$channel]) {
@ -3835,52 +3884,6 @@ class Net_SSH2
} }
$this->channel_buffers[$channel][] = $data; $this->channel_buffers[$channel][] = $data;
break; break;
case NET_SSH2_MSG_CHANNEL_REQUEST:
if (strlen($response) < 4) {
return false;
}
extract(unpack('Nlength', $this->_string_shift($response, 4)));
$value = $this->_string_shift($response, $length);
switch ($value) {
case 'exit-signal':
$this->_string_shift($response, 1);
if (strlen($response) < 4) {
return false;
}
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);
if (strlen($response) < 4) {
return false;
}
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':
if (strlen($response) < 5) {
return false;
}
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: case NET_SSH2_MSG_CHANNEL_CLOSE:
$this->curTimeout = 0; $this->curTimeout = 0;