mirror of
https://github.com/GNS3/gns3-server
synced 2024-11-12 19:38:57 +00:00
Telnet console resize support for Docker VM.
This commit is contained in:
parent
c0a0a13bdd
commit
60ac6d2dfe
@ -442,6 +442,7 @@ class DockerVM(BaseNode):
|
||||
|
||||
if self.console_type == "telnet":
|
||||
yield from self._start_console()
|
||||
|
||||
elif self.console_type == "http" or self.console_type == "https":
|
||||
yield from self._start_http()
|
||||
|
||||
@ -592,6 +593,19 @@ class DockerVM(BaseNode):
|
||||
])
|
||||
self._telnet_servers.append((yield from asyncio.start_server(server.run, self._manager.port_manager.console_host, self.console)))
|
||||
|
||||
@asyncio.coroutine
|
||||
def _window_size_changed_callback(self, columns, rows):
|
||||
"""
|
||||
Called when the console window size has been changed.
|
||||
(when naws is enabled in the Telnet server)
|
||||
|
||||
:param columns: number of columns
|
||||
:param rows: number of rows
|
||||
"""
|
||||
|
||||
# resize the container TTY.
|
||||
yield from self._manager.query("POST", "containers/{}/resize?h={}&w={}".format(self._cid, rows, columns))
|
||||
|
||||
@asyncio.coroutine
|
||||
def _start_console(self):
|
||||
"""
|
||||
@ -614,8 +628,7 @@ class DockerVM(BaseNode):
|
||||
|
||||
output_stream = asyncio.StreamReader()
|
||||
input_stream = InputStream()
|
||||
|
||||
telnet = AsyncioTelnetServer(reader=output_stream, writer=input_stream, echo=True)
|
||||
telnet = AsyncioTelnetServer(reader=output_stream, writer=input_stream, echo=True, naws=True, window_size_changed_callback=self._window_size_changed_callback)
|
||||
try:
|
||||
self._telnet_servers.append((yield from asyncio.start_server(telnet.run, self._manager.port_manager.console_host, self.console)))
|
||||
except OSError as e:
|
||||
@ -625,7 +638,6 @@ class DockerVM(BaseNode):
|
||||
input_stream.ws = self._console_websocket
|
||||
|
||||
output_stream.feed_data(self.name.encode() + b" console is now available... Press RETURN to get started.\r\n")
|
||||
|
||||
asyncio_ensure_future(self._read_console_output(self._console_websocket, output_stream))
|
||||
|
||||
@asyncio.coroutine
|
||||
|
@ -15,7 +15,7 @@
|
||||
# You should have received a copy of the GNU General Public License
|
||||
# along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
|
||||
import re
|
||||
|
||||
import asyncio
|
||||
import asyncio.subprocess
|
||||
import struct
|
||||
@ -62,10 +62,11 @@ READ_SIZE = 1024
|
||||
|
||||
class TelnetConnection(object):
|
||||
"""Default implementation of telnet connection which may but may not be used."""
|
||||
def __init__(self, reader, writer):
|
||||
def __init__(self, reader, writer, window_size_changed_callback=None):
|
||||
self.is_closing = False
|
||||
self._reader = reader
|
||||
self._writer = writer
|
||||
self._window_size_changed_callback = window_size_changed_callback
|
||||
|
||||
@property
|
||||
def reader(self):
|
||||
@ -85,10 +86,13 @@ class TelnetConnection(object):
|
||||
"""Method called when client is disconnecting"""
|
||||
pass
|
||||
|
||||
@asyncio.coroutine
|
||||
def window_size_changed(self, columns, rows):
|
||||
"""Method called when window size changed, only can occur when
|
||||
`naws` flag is enable in server configuration."""
|
||||
pass
|
||||
|
||||
if self._window_size_changed_callback:
|
||||
yield from self._window_size_changed_callback(columns, rows)
|
||||
|
||||
@asyncio.coroutine
|
||||
def feed(self, data):
|
||||
@ -116,7 +120,7 @@ class TelnetConnection(object):
|
||||
class AsyncioTelnetServer:
|
||||
MAX_NEGOTIATION_READ = 10
|
||||
|
||||
def __init__(self, reader=None, writer=None, binary=True, echo=False, naws=False, connection_factory=None):
|
||||
def __init__(self, reader=None, writer=None, binary=True, echo=False, naws=False, window_size_changed_callback=None, connection_factory=None):
|
||||
"""
|
||||
Initializes telnet server
|
||||
:param naws when True make a window size negotiation
|
||||
@ -131,6 +135,7 @@ class AsyncioTelnetServer:
|
||||
self._lock = asyncio.Lock()
|
||||
self._reader_process = None
|
||||
self._current_read = None
|
||||
self._window_size_changed_callback = window_size_changed_callback
|
||||
|
||||
self._binary = binary
|
||||
# If echo is true when the client send data
|
||||
@ -139,8 +144,8 @@ class AsyncioTelnetServer:
|
||||
self._echo = echo
|
||||
self._naws = naws
|
||||
|
||||
def default_connection_factory(reader, writer):
|
||||
return TelnetConnection(reader, writer)
|
||||
def default_connection_factory(reader, writer, window_size_changed_callback):
|
||||
return TelnetConnection(reader, writer, window_size_changed_callback)
|
||||
|
||||
if connection_factory is None:
|
||||
connection_factory = default_connection_factory
|
||||
@ -190,7 +195,7 @@ class AsyncioTelnetServer:
|
||||
@asyncio.coroutine
|
||||
def run(self, network_reader, network_writer):
|
||||
# Keep track of connected clients
|
||||
connection = self._connection_factory(network_reader, network_writer)
|
||||
connection = self._connection_factory(network_reader, network_writer, self._window_size_changed_callback)
|
||||
self._connections[network_writer] = connection
|
||||
|
||||
try:
|
||||
@ -307,6 +312,7 @@ class AsyncioTelnetServer:
|
||||
cmd.append(buffer[location])
|
||||
return op
|
||||
|
||||
@asyncio.coroutine
|
||||
def _negotiate(self, data, connection):
|
||||
""" Performs negotiation commands"""
|
||||
|
||||
@ -314,7 +320,7 @@ class AsyncioTelnetServer:
|
||||
if command == NAWS:
|
||||
if len(payload) == 4:
|
||||
columns, rows = struct.unpack(str('!HH'), bytes(payload))
|
||||
connection.window_size_changed(columns, rows)
|
||||
yield from connection.window_size_changed(columns, rows)
|
||||
else:
|
||||
log.warning('Wrong number of NAWS bytes')
|
||||
else:
|
||||
@ -373,7 +379,7 @@ class AsyncioTelnetServer:
|
||||
break
|
||||
|
||||
# SE command is followed by IAC, remove the last two operations from stack
|
||||
self._negotiate(negotiation[0:-2], connection)
|
||||
yield from self._negotiate(negotiation[0:-2], connection)
|
||||
|
||||
# This must be a 3-byte TELNET command
|
||||
else:
|
||||
|
Loading…
Reference in New Issue
Block a user