mirror of
https://github.com/GNS3/gns3-server
synced 2024-12-25 00:08:11 +00:00
673 lines
25 KiB
Python
673 lines
25 KiB
Python
# -*- coding: utf-8 -*-
|
|
#
|
|
# Copyright (C) 2015 GNS3 Technologies Inc.
|
|
#
|
|
# This program is free software: you can redistribute it and/or modify
|
|
# it under the terms of the GNU General Public License as published by
|
|
# the Free Software Foundation, either version 3 of the License, or
|
|
# (at your option) any later version.
|
|
#
|
|
# This program is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU General Public License for more details.
|
|
#
|
|
# 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 sys
|
|
import os
|
|
import stat
|
|
import logging
|
|
import aiohttp
|
|
import shutil
|
|
import asyncio
|
|
import tempfile
|
|
import psutil
|
|
import platform
|
|
|
|
from gns3server.utils.interfaces import interfaces
|
|
from ..compute.port_manager import PortManager
|
|
from ..utils.asyncio import wait_run_in_executor
|
|
from ..utils.asyncio.telnet_server import AsyncioTelnetServer
|
|
from ..ubridge.hypervisor import Hypervisor
|
|
from ..ubridge.ubridge_error import UbridgeError
|
|
from .nios.nio_udp import NIOUDP
|
|
from .error import NodeError
|
|
from ..config import Config
|
|
|
|
|
|
log = logging.getLogger(__name__)
|
|
|
|
|
|
class BaseNode:
|
|
|
|
"""
|
|
Base node implementation.
|
|
|
|
:param name: name of this node
|
|
:param node_id: Node instance identifier
|
|
:param project: Project instance
|
|
:param manager: parent node manager
|
|
:param console: TCP console port
|
|
:param aux: TCP aux console port
|
|
:param allocate_aux: Boolean if true will allocate an aux console port
|
|
:param linked_clone: The node base image is duplicate/overlay (Each node data are independent)
|
|
:param wrap_console: The console is wrapped using AsyncioTelnetServer
|
|
"""
|
|
|
|
def __init__(self, name, node_id, project, manager, console=None, console_type="telnet", aux=None, allocate_aux=False, linked_clone=True, wrap_console=False):
|
|
|
|
self._name = name
|
|
self._usage = ""
|
|
self._id = node_id
|
|
self._linked_clone = linked_clone
|
|
self._project = project
|
|
self._manager = manager
|
|
self._console = console
|
|
self._aux = aux
|
|
self._console_type = console_type
|
|
self._temporary_directory = None
|
|
self._hw_virtualization = False
|
|
self._ubridge_hypervisor = None
|
|
self._closed = False
|
|
self._node_status = "stopped"
|
|
self._command_line = ""
|
|
self._allocate_aux = allocate_aux
|
|
self._wrap_console = wrap_console
|
|
self._wrapper_telnet_server = None
|
|
|
|
# check if the node will use uBridge or not
|
|
server_config = Config.instance().get_section_config("Server")
|
|
self._use_ubridge = server_config.getboolean("use_ubridge")
|
|
|
|
if self._console is not None:
|
|
if console_type == "vnc":
|
|
self._console = self._manager.port_manager.reserve_tcp_port(self._console, self._project, port_range_start=5900, port_range_end=6000)
|
|
else:
|
|
self._console = self._manager.port_manager.reserve_tcp_port(self._console, self._project)
|
|
|
|
# We need to allocate aux before giving a random console port
|
|
if self._aux is not None:
|
|
self._aux = self._manager.port_manager.reserve_tcp_port(self._aux, self._project)
|
|
|
|
if self._console is None:
|
|
if console_type == "vnc":
|
|
# VNC is a special case and the range must be 5900-6000
|
|
self._console = self._manager.port_manager.get_free_tcp_port(self._project, port_range_start=5900, port_range_end=6000)
|
|
else:
|
|
self._console = self._manager.port_manager.get_free_tcp_port(self._project)
|
|
|
|
if self._wrap_console:
|
|
self._internal_console_port = self._manager.port_manager.get_free_tcp_port(self._project)
|
|
|
|
if self._aux is None and allocate_aux:
|
|
self._aux = self._manager.port_manager.get_free_tcp_port(self._project)
|
|
|
|
log.debug("{module}: {name} [{id}] initialized. Console port {console}".format(module=self.manager.module_name,
|
|
name=self.name,
|
|
id=self.id,
|
|
console=self._console))
|
|
|
|
def __del__(self):
|
|
|
|
if hasattr(self, "_temporary_directory") and self._temporary_directory is not None:
|
|
if os.path.exists(self._temporary_directory):
|
|
shutil.rmtree(self._temporary_directory, ignore_errors=True)
|
|
|
|
@property
|
|
def linked_clone(self):
|
|
return self._linked_clone
|
|
|
|
@linked_clone.setter
|
|
def linked_clone(self, val):
|
|
self._linked_clone = val
|
|
|
|
@property
|
|
def status(self):
|
|
"""
|
|
Returns current node status
|
|
"""
|
|
|
|
return self._node_status
|
|
|
|
@status.setter
|
|
def status(self, status):
|
|
|
|
self._node_status = status
|
|
self.updated()
|
|
|
|
def updated(self):
|
|
"""
|
|
Sends an updated event
|
|
"""
|
|
self.project.emit("node.updated", self)
|
|
|
|
@property
|
|
def command_line(self):
|
|
"""
|
|
Returns command used to start the node
|
|
"""
|
|
|
|
return self._command_line
|
|
|
|
@command_line.setter
|
|
def command_line(self, command_line):
|
|
|
|
self._command_line = command_line
|
|
|
|
@property
|
|
def project(self):
|
|
"""
|
|
Returns the node current project.
|
|
|
|
:returns: Project instance.
|
|
"""
|
|
|
|
return self._project
|
|
|
|
@property
|
|
def name(self):
|
|
"""
|
|
Returns the name for this node.
|
|
|
|
:returns: name
|
|
"""
|
|
|
|
return self._name
|
|
|
|
@name.setter
|
|
def name(self, new_name):
|
|
"""
|
|
Sets the name of this node.
|
|
|
|
:param new_name: name
|
|
"""
|
|
|
|
log.info("{module}: {name} [{id}] renamed to {new_name}".format(module=self.manager.module_name,
|
|
name=self.name,
|
|
id=self.id,
|
|
new_name=new_name))
|
|
self._name = new_name
|
|
|
|
@property
|
|
def usage(self):
|
|
"""
|
|
Returns the usage for this node.
|
|
|
|
:returns: usage
|
|
"""
|
|
|
|
return self._usage
|
|
|
|
@usage.setter
|
|
def usage(self, new_usage):
|
|
"""
|
|
Sets the usage of this node.
|
|
|
|
:param new_usage: usage
|
|
"""
|
|
|
|
self._usage = new_usage
|
|
|
|
@property
|
|
def id(self):
|
|
"""
|
|
Returns the ID for this node.
|
|
|
|
:returns: Node identifier (string)
|
|
"""
|
|
|
|
return self._id
|
|
|
|
@property
|
|
def manager(self):
|
|
"""
|
|
Returns the manager for this node.
|
|
|
|
:returns: instance of manager
|
|
"""
|
|
|
|
return self._manager
|
|
|
|
@property
|
|
def working_dir(self):
|
|
"""
|
|
Return the node working directory
|
|
"""
|
|
|
|
return self._project.node_working_directory(self)
|
|
|
|
@property
|
|
def temporary_directory(self):
|
|
if self._temporary_directory is None:
|
|
try:
|
|
self._temporary_directory = tempfile.mkdtemp()
|
|
except OSError as e:
|
|
raise NodeError("Can't create temporary directory: {}".format(e))
|
|
return self._temporary_directory
|
|
|
|
def create(self):
|
|
"""
|
|
Creates the node.
|
|
"""
|
|
|
|
log.info("{module}: {name} [{id}] created".format(module=self.manager.module_name,
|
|
name=self.name,
|
|
id=self.id))
|
|
|
|
@asyncio.coroutine
|
|
def delete(self):
|
|
"""
|
|
Delete the node (including all its files).
|
|
"""
|
|
def set_rw(operation, name, exc):
|
|
os.chmod(name, stat.S_IWRITE)
|
|
|
|
directory = self.project.node_working_directory(self)
|
|
if os.path.exists(directory):
|
|
try:
|
|
yield from wait_run_in_executor(shutil.rmtree, directory, onerror=set_rw)
|
|
except OSError as e:
|
|
raise aiohttp.web.HTTPInternalServerError(text="Could not delete the node working directory: {}".format(e))
|
|
|
|
def start(self):
|
|
"""
|
|
Starts the node process.
|
|
"""
|
|
|
|
raise NotImplementedError
|
|
|
|
@asyncio.coroutine
|
|
def stop(self):
|
|
"""
|
|
Stop the node process.
|
|
"""
|
|
if self._wrapper_telnet_server:
|
|
self._wrapper_telnet_server.close()
|
|
yield from self._wrapper_telnet_server.wait_closed()
|
|
self.status = "stopped"
|
|
|
|
def suspend(self):
|
|
"""
|
|
Suspends the node process.
|
|
"""
|
|
|
|
raise NotImplementedError
|
|
|
|
@asyncio.coroutine
|
|
def close(self):
|
|
"""
|
|
Close the node process.
|
|
"""
|
|
|
|
if self._closed:
|
|
return False
|
|
|
|
log.info("{module}: '{name}' [{id}]: is closing".format(module=self.manager.module_name,
|
|
name=self.name,
|
|
id=self.id))
|
|
|
|
if self._console:
|
|
self._manager.port_manager.release_tcp_port(self._console, self._project)
|
|
self._console = None
|
|
if self._wrap_console:
|
|
self._manager.port_manager.release_tcp_port(self._internal_console_port, self._project)
|
|
self._internal_console_port = None
|
|
|
|
if self._aux:
|
|
self._manager.port_manager.release_tcp_port(self._aux, self._project)
|
|
self._aux = None
|
|
|
|
self._closed = True
|
|
return True
|
|
|
|
@asyncio.coroutine
|
|
def start_wrap_console(self):
|
|
"""
|
|
Start a telnet proxy for the console allowing multiple client
|
|
connected at the same time
|
|
"""
|
|
if not self._wrap_console or self._console_type != "telnet":
|
|
return
|
|
remaining_trial = 60
|
|
while True:
|
|
try:
|
|
(reader, writer) = yield from asyncio.open_connection(host="127.0.0.1", port=self._internal_console_port)
|
|
break
|
|
except (OSError, ConnectionRefusedError) as e:
|
|
if remaining_trial <= 0:
|
|
raise e
|
|
yield from asyncio.sleep(0.1)
|
|
remaining_trial -= 1
|
|
yield from AsyncioTelnetServer.write_client_intro(writer, echo=True)
|
|
server = AsyncioTelnetServer(reader=reader, writer=writer, binary=True, echo=True)
|
|
self._wrapper_telnet_server = yield from asyncio.start_server(server.run, self._manager.port_manager.console_host, self.console)
|
|
|
|
@property
|
|
def allocate_aux(self):
|
|
"""
|
|
:returns: Boolean allocate or not an aux console
|
|
"""
|
|
return self._allocate_aux
|
|
|
|
@allocate_aux.setter
|
|
def allocate_aux(self, allocate_aux):
|
|
"""
|
|
:returns: Boolean allocate or not an aux console
|
|
"""
|
|
self._allocate_aux = allocate_aux
|
|
|
|
@property
|
|
def aux(self):
|
|
"""
|
|
Returns the aux console port of this node.
|
|
|
|
:returns: aux console port
|
|
"""
|
|
|
|
return self._aux
|
|
|
|
@aux.setter
|
|
def aux(self, aux):
|
|
"""
|
|
Changes the aux port
|
|
|
|
:params aux: Console port (integer) or None to free the port
|
|
"""
|
|
|
|
if aux == self._aux:
|
|
return
|
|
|
|
if self._aux:
|
|
self._manager.port_manager.release_tcp_port(self._aux, self._project)
|
|
self._aux = None
|
|
if aux is not None:
|
|
self._aux = self._manager.port_manager.reserve_tcp_port(aux, self._project)
|
|
log.info("{module}: '{name}' [{id}]: aux port set to {port}".format(module=self.manager.module_name,
|
|
name=self.name,
|
|
id=self.id,
|
|
port=aux))
|
|
|
|
@property
|
|
def console(self):
|
|
"""
|
|
Returns the console port of this node.
|
|
|
|
:returns: console port
|
|
"""
|
|
|
|
return self._console
|
|
|
|
@console.setter
|
|
def console(self, console):
|
|
"""
|
|
Changes the console port
|
|
|
|
:params console: Console port (integer) or None to free the port
|
|
"""
|
|
|
|
if console == self._console:
|
|
return
|
|
|
|
if self._console_type == "vnc" and console is not None and console < 5900:
|
|
raise NodeError("VNC console require a port superior or equal to 5900 currently it's {}".format(console))
|
|
|
|
if self._console:
|
|
self._manager.port_manager.release_tcp_port(self._console, self._project)
|
|
self._console = None
|
|
if console is not None:
|
|
if self.console_type == "vnc":
|
|
self._console = self._manager.port_manager.reserve_tcp_port(console, self._project, port_range_start=5900, port_range_end=6000)
|
|
else:
|
|
self._console = self._manager.port_manager.reserve_tcp_port(console, self._project)
|
|
|
|
log.info("{module}: '{name}' [{id}]: console port set to {port}".format(module=self.manager.module_name,
|
|
name=self.name,
|
|
id=self.id,
|
|
port=console))
|
|
|
|
@property
|
|
def console_type(self):
|
|
"""
|
|
Returns the console type for this node.
|
|
|
|
:returns: console type (string)
|
|
"""
|
|
|
|
return self._console_type
|
|
|
|
@console_type.setter
|
|
def console_type(self, console_type):
|
|
"""
|
|
Sets the console type for this node.
|
|
|
|
:param console_type: console type (string)
|
|
"""
|
|
|
|
if console_type != self._console_type:
|
|
# get a new port if the console type change
|
|
self._manager.port_manager.release_tcp_port(self._console, self._project)
|
|
if console_type == "vnc":
|
|
# VNC is a special case and the range must be 5900-6000
|
|
self._console = self._manager.port_manager.get_free_tcp_port(self._project, 5900, 6000)
|
|
else:
|
|
self._console = self._manager.port_manager.get_free_tcp_port(self._project)
|
|
|
|
self._console_type = console_type
|
|
log.info("{module}: '{name}' [{id}]: console type set to {console_type}".format(module=self.manager.module_name,
|
|
name=self.name,
|
|
id=self.id,
|
|
console_type=console_type))
|
|
|
|
@property
|
|
def use_ubridge(self):
|
|
"""
|
|
Returns if uBridge is used for this node or not
|
|
|
|
:returns: boolean
|
|
"""
|
|
|
|
return self._use_ubridge
|
|
|
|
@property
|
|
def ubridge(self):
|
|
"""
|
|
Returns the uBridge hypervisor.
|
|
|
|
:returns: path to uBridge
|
|
"""
|
|
|
|
if self._ubridge_hypervisor and not self._ubridge_hypervisor.is_running():
|
|
self._ubridge_hypervisor = None
|
|
return self._ubridge_hypervisor
|
|
|
|
@ubridge.setter
|
|
def ubridge(self, ubride_hypervisor):
|
|
"""
|
|
Set an uBridge hypervisor.
|
|
|
|
:param ubride_hypervisor: uBridge hypervisor
|
|
"""
|
|
|
|
self._ubridge_hypervisor = ubride_hypervisor
|
|
|
|
@property
|
|
def ubridge_path(self):
|
|
"""
|
|
Returns the uBridge executable path.
|
|
|
|
:returns: path to uBridge
|
|
"""
|
|
|
|
path = self._manager.config.get_section_config("Server").get("ubridge_path", "ubridge")
|
|
path = shutil.which(path)
|
|
return path
|
|
|
|
@asyncio.coroutine
|
|
def _ubridge_send(self, command):
|
|
"""
|
|
Sends a command to uBridge hypervisor.
|
|
|
|
:param command: command to send
|
|
"""
|
|
|
|
if not self._ubridge_hypervisor or not self._ubridge_hypervisor.is_running():
|
|
raise NodeError("Cannot send command '{}': uBridge is not running".format(command))
|
|
try:
|
|
yield from self._ubridge_hypervisor.send(command)
|
|
except UbridgeError as e:
|
|
raise UbridgeError("{}: {}".format(e, self._ubridge_hypervisor.read_stdout()))
|
|
|
|
@asyncio.coroutine
|
|
def _start_ubridge(self):
|
|
"""
|
|
Starts uBridge (handles connections to and from this node).
|
|
"""
|
|
|
|
if self.ubridge_path is None:
|
|
raise NodeError("uBridge is not available, path doesn't exist, or you just installed GNS3 and need to restart your user session to refresh user permissions.")
|
|
|
|
if not self._manager.has_privileged_access(self.ubridge_path):
|
|
raise NodeError("uBridge requires root access or the capability to interact with network adapters")
|
|
|
|
server_config = self._manager.config.get_section_config("Server")
|
|
server_host = server_config.get("host")
|
|
if not self._ubridge_hypervisor:
|
|
self._ubridge_hypervisor = Hypervisor(self._project, self.ubridge_path, self.working_dir, server_host)
|
|
log.info("Starting new uBridge hypervisor {}:{}".format(self._ubridge_hypervisor.host, self._ubridge_hypervisor.port))
|
|
yield from self._ubridge_hypervisor.start()
|
|
log.info("Hypervisor {}:{} has successfully started".format(self._ubridge_hypervisor.host, self._ubridge_hypervisor.port))
|
|
yield from self._ubridge_hypervisor.connect()
|
|
|
|
@asyncio.coroutine
|
|
def _stop_ubridge(self):
|
|
"""
|
|
Stops uBridge.
|
|
"""
|
|
|
|
if self._ubridge_hypervisor and self._ubridge_hypervisor.is_running():
|
|
log.info("Stopping uBridge hypervisor {}:{}".format(self._ubridge_hypervisor.host, self._ubridge_hypervisor.port))
|
|
yield from self._ubridge_hypervisor.stop()
|
|
self._ubridge_hypervisor = None
|
|
|
|
@asyncio.coroutine
|
|
def _add_ubridge_udp_connection(self, bridge_name, source_nio, destination_nio):
|
|
"""
|
|
Creates an UDP connection in uBridge.
|
|
|
|
:param bridge_name: bridge name in uBridge
|
|
:param source_nio: source NIO instance
|
|
:param destination_nio: destination NIO instance
|
|
"""
|
|
|
|
yield from self._ubridge_send("bridge create {name}".format(name=bridge_name))
|
|
|
|
if not isinstance(destination_nio, NIOUDP):
|
|
raise NodeError("Destination NIO is not UDP")
|
|
|
|
yield from self._ubridge_send('bridge add_nio_udp {name} {lport} {rhost} {rport}'.format(name=bridge_name,
|
|
lport=source_nio.lport,
|
|
rhost=source_nio.rhost,
|
|
rport=source_nio.rport))
|
|
|
|
yield from self._ubridge_send('bridge add_nio_udp {name} {lport} {rhost} {rport}'.format(name=bridge_name,
|
|
lport=destination_nio.lport,
|
|
rhost=destination_nio.rhost,
|
|
rport=destination_nio.rport))
|
|
|
|
if destination_nio.capturing:
|
|
yield from self._ubridge_send('bridge start_capture {name} "{pcap_file}"'.format(name=bridge_name,
|
|
pcap_file=destination_nio.pcap_output_file))
|
|
|
|
yield from self._ubridge_send('bridge start {name}'.format(name=bridge_name))
|
|
|
|
@asyncio.coroutine
|
|
def _add_ubridge_ethernet_connection(self, bridge_name, ethernet_interface, block_host_traffic=True):
|
|
"""
|
|
Creates a connection with an Ethernet interface in uBridge.
|
|
|
|
:param bridge_name: bridge name in uBridge
|
|
:param ethernet_interface: Ethernet interface name
|
|
:param block_host_traffic: block network traffic originating from the host OS (Windows only)
|
|
"""
|
|
|
|
if sys.platform.startswith("linux"):
|
|
# on Linux we use RAW sockets
|
|
yield from self._ubridge_send('bridge add_nio_linux_raw {name} "{interface}"'.format(name=bridge_name, interface=ethernet_interface))
|
|
elif sys.platform.startswith("win"):
|
|
# on Windows we use Winpcap/Npcap
|
|
windows_interfaces = interfaces()
|
|
npf_id = None
|
|
source_mac = None
|
|
for interface in windows_interfaces:
|
|
# Winpcap/Npcap uses a NPF ID to identify an interface on Windows
|
|
if "netcard" in interface and ethernet_interface in interface["netcard"]:
|
|
npf_id = interface["id"]
|
|
source_mac = interface["mac_address"]
|
|
elif ethernet_interface in interface["name"]:
|
|
npf_id = interface["id"]
|
|
source_mac = interface["mac_address"]
|
|
if npf_id:
|
|
yield from self._ubridge_send('bridge add_nio_ethernet {name} "{interface}"'.format(name=bridge_name,
|
|
interface=npf_id))
|
|
else:
|
|
raise NodeError("Could not find NPF id for interface {}".format(ethernet_interface))
|
|
|
|
if block_host_traffic:
|
|
if source_mac:
|
|
yield from self._ubridge_send('bridge set_pcap_filter {name} "not ether src {mac}"'.format(name=bridge_name, mac=source_mac))
|
|
else:
|
|
log.warn("Could not block host network traffic on {} (no MAC address found)".format(ethernet_interface))
|
|
else:
|
|
# on other platforms we just rely on the pcap library
|
|
yield from self._ubridge_send('bridge add_nio_ethernet {name} "{interface}"'.format(name=bridge_name, interface=ethernet_interface))
|
|
|
|
def _create_local_udp_tunnel(self):
|
|
"""
|
|
Creates a local UDP tunnel (pair of 2 NIOs, one for each direction)
|
|
|
|
:returns: source NIO and destination NIO.
|
|
"""
|
|
|
|
m = PortManager.instance()
|
|
lport = m.get_free_udp_port(self.project)
|
|
rport = m.get_free_udp_port(self.project)
|
|
source_nio_settings = {'lport': lport, 'rhost': '127.0.0.1', 'rport': rport, 'type': 'nio_udp'}
|
|
destination_nio_settings = {'lport': rport, 'rhost': '127.0.0.1', 'rport': lport, 'type': 'nio_udp'}
|
|
source_nio = self.manager.create_nio(source_nio_settings)
|
|
destination_nio = self.manager.create_nio(destination_nio_settings)
|
|
log.info("{module}: '{name}' [{id}]:local UDP tunnel created between port {port1} and {port2}".format(module=self.manager.module_name,
|
|
name=self.name,
|
|
id=self.id,
|
|
port1=lport,
|
|
port2=rport))
|
|
return source_nio, destination_nio
|
|
|
|
@property
|
|
def hw_virtualization(self):
|
|
"""
|
|
Returns either the node is using hardware virtualization or not.
|
|
|
|
:return: boolean
|
|
"""
|
|
|
|
return self._hw_virtualization
|
|
|
|
def check_available_ram(self, requested_ram):
|
|
"""
|
|
Sends a warning notification if there is not enough RAM on the system to allocate requested RAM.
|
|
|
|
:param requested_ram: requested amount of RAM in MB
|
|
"""
|
|
|
|
available_ram = int(psutil.virtual_memory().available / (1024 * 1024))
|
|
percentage_left = psutil.virtual_memory().percent
|
|
if requested_ram > available_ram:
|
|
message = '"{}" requires {}MB of RAM to run but there is only {}MB - {}% of RAM left on "{}"'.format(self.name,
|
|
requested_ram,
|
|
available_ram,
|
|
percentage_left,
|
|
platform.node())
|
|
self.project.emit("log.warning", {"message": message})
|