mirror of
https://github.com/GNS3/gns3-server.git
synced 2024-12-20 05:17:56 +00:00
385 lines
16 KiB
Python
385 lines
16 KiB
Python
# -*- coding: utf-8 -*-
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#
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# Copyright (C) 2016 GNS3 Technologies Inc.
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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import sys
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import asyncio
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import subprocess
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from ...error import NodeError
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from ...base_node import BaseNode
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from ...nios.nio_udp import NIOUDP
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from ....ubridge.ubridge_error import UbridgeError
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import gns3server.utils.interfaces
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import gns3server.utils.asyncio
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import logging
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log = logging.getLogger(__name__)
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class Cloud(BaseNode):
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"""
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Cloud.
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:param name: name for this cloud
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:param node_id: Node identifier
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:param project: Project instance
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:param manager: Parent VM Manager
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"""
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def __init__(self, name, node_id, project, manager, ports=[]):
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super().__init__(name, node_id, project, manager)
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self._nios = {}
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# If the cloud is not configured we fill it with host interfaces
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if not ports or len(ports) == 0:
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self._ports_mapping = []
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for interface in self._interfaces():
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if not interface["special"]:
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self._ports_mapping.append({
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"interface": interface["name"],
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"type": interface["type"],
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"port_number": len(self._ports_mapping),
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"name": interface["name"]
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})
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else:
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port_number = 0
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for port in ports:
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port["port_number"] = port_number
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port_number += 1
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self._ports_mapping = ports
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def _interfaces(self):
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return gns3server.utils.interfaces.interfaces()
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def __json__(self):
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host_interfaces = []
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network_interfaces = gns3server.utils.interfaces.interfaces()
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for interface in network_interfaces:
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host_interfaces.append({"name": interface["name"],
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"type": interface["type"],
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"special": interface["special"]})
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return {"name": self.name,
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"node_id": self.id,
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"project_id": self.project.id,
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"ports_mapping": self._ports_mapping,
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"interfaces": host_interfaces,
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"status": "started"}
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@property
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def ports_mapping(self):
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"""
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Ports on this cloud.
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:returns: ports info
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"""
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return self._ports_mapping
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@ports_mapping.setter
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def ports_mapping(self, ports):
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"""
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Set the ports on this cloud.
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:param ports: ports info
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"""
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if ports != self._ports_mapping:
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if len(self._nios) > 0:
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raise NodeError("Can't modify a cloud already connected.")
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port_number = 0
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for port in ports:
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port["port_number"] = port_number
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port_number += 1
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self._ports_mapping = ports
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@asyncio.coroutine
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def create(self):
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"""
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Creates this cloud.
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"""
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yield from self._start_ubridge()
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log.info('Cloud "{name}" [{id}] has been created'.format(name=self._name, id=self._id))
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@asyncio.coroutine
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def close(self):
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"""
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Closes this cloud.
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"""
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if not (yield from super().close()):
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return False
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for nio in self._nios.values():
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if nio and isinstance(nio, NIOUDP):
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self.manager.port_manager.release_udp_port(nio.lport, self._project)
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yield from self._stop_ubridge()
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log.info('Cloud "{name}" [{id}] has been closed'.format(name=self._name, id=self._id))
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@asyncio.coroutine
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def _is_wifi_adapter_osx(self, adapter_name):
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try:
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output = yield from gns3server.utils.asyncio.subprocess_check_output("networksetup", "-listallhardwareports")
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except (FileNotFoundError, subprocess.SubprocessError) as e:
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log.warn("Could not execute networksetup: {}".format(e))
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return False
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is_wifi = False
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for line in output.splitlines():
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if is_wifi:
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if adapter_name == line.replace("Device: ", ""):
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return True
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is_wifi = False
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else:
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if 'Wi-Fi' in line:
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is_wifi = True
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return False
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@asyncio.coroutine
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def _add_ubridge_connection(self, nio, port_number):
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"""
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Creates a connection in uBridge.
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:param nio: NIO instance
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:param port_number: port number
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"""
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port_info = None
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for port in self._ports_mapping:
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if port["port_number"] == port_number:
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port_info = port
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break
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if not port_info:
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raise NodeError("Port {port_number} doesn't exist on cloud '{name}'".format(name=self.name,
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port_number=port_number))
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bridge_name = "{}-{}".format(self._id, port_number)
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yield from self._ubridge_send("bridge create {name}".format(name=bridge_name))
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if not isinstance(nio, NIOUDP):
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raise NodeError("Source NIO is not UDP")
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yield from self._ubridge_send('bridge add_nio_udp {name} {lport} {rhost} {rport}'.format(name=bridge_name,
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lport=nio.lport,
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rhost=nio.rhost,
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rport=nio.rport))
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if port_info["type"] in ("ethernet", "tap"):
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if sys.platform.startswith("win"):
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yield from self._add_ubridge_ethernet_connection(bridge_name, port_info["interface"], block_host_traffic=False)
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else:
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if port_info["type"] == "ethernet":
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network_interfaces = [interface["name"] for interface in self._interfaces()]
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if not port_info["interface"] in network_interfaces:
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raise NodeError("Interface '{}' could not be found on this system".format(port_info["interface"]))
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if sys.platform.startswith("linux"):
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yield from self._add_linux_ethernet(port_info, bridge_name)
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elif sys.platform.startswith("darwin"):
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yield from self._add_osx_ethernet(port_info, bridge_name)
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else:
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yield from self._add_windows_ethernet(port_info, bridge_name)
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elif port_info["type"] == "tap":
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yield from self._ubridge_send('bridge add_nio_tap {name} "{interface}"'.format(name=bridge_name, interface=port_info["interface"]))
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elif port_info["type"] == "udp":
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yield from self._ubridge_send('bridge add_nio_udp {name} {lport} {rhost} {rport}'.format(name=bridge_name,
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lport=port_info["lport"],
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rhost=port_info["rhost"],
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rport=port_info["rport"]))
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if nio.capturing:
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yield from self._ubridge_send('bridge start_capture {name} "{pcap_file}"'.format(name=bridge_name,
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pcap_file=nio.pcap_output_file))
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yield from self._ubridge_send('bridge start {name}'.format(name=bridge_name))
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@asyncio.coroutine
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def _add_linux_ethernet(self, port_info, bridge_name):
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"""
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Use raw sockets on Linux.
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If interface is a bridge we connect a tap to it
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"""
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interface = port_info["interface"]
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if gns3server.utils.interfaces.is_interface_bridge(interface):
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network_interfaces = [interface["name"] for interface in self._interfaces()]
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i = 0
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while True:
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tap = "gns3tap{}-{}".format(i, port_info["port_number"])
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if tap not in network_interfaces:
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break
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i += 1
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yield from self._ubridge_send('bridge add_nio_tap "{name}" "{interface}"'.format(name=bridge_name, interface=tap))
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yield from self._ubridge_send('brctl addif "{interface}" "{tap}"'.format(tap=tap, interface=interface))
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else:
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yield from self._ubridge_send('bridge add_nio_linux_raw {name} "{interface}"'.format(name=bridge_name, interface=interface))
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@asyncio.coroutine
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def _add_osx_ethernet(self, port_info, bridge_name):
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# Wireless adapters are not well supported by the libpcap on OSX
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if (yield from self._is_wifi_adapter_osx(port_info["interface"])):
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raise NodeError("Connecting to a Wireless adapter is not supported on Mac OS")
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if port_info["interface"].startswith("vmnet"):
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# Use a special NIO to connect to VMware vmnet interfaces on OSX (libpcap doesn't support them)
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yield from self._ubridge_send('bridge add_nio_fusion_vmnet {name} "{interface}"'.format(name=bridge_name,
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interface=port_info["interface"]))
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return
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if not gns3server.utils.interfaces.has_netmask(port_info["interface"]):
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raise NodeError("Interface {} has no netmask, interface down?".format(port_info["interface"]))
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yield from self._ubridge_send('bridge add_nio_ethernet {name} "{interface}"'.format(name=bridge_name, interface=port_info["interface"]))
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@asyncio.coroutine
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def _add_windows_ethernet(self, port_info, bridge_name):
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if not gns3server.utils.interfaces.has_netmask(port_info["interface"]):
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raise NodeError("Interface {} has no netmask, interface down?".format(port_info["interface"]))
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yield from self._ubridge_send('bridge add_nio_ethernet {name} "{interface}"'.format(name=bridge_name, interface=port_info["interface"]))
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@asyncio.coroutine
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def add_nio(self, nio, port_number):
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"""
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Adds a NIO as new port on this cloud.
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:param nio: NIO instance to add
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:param port_number: port to allocate for the NIO
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"""
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if port_number in self._nios:
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raise NodeError("Port {} isn't free".format(port_number))
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log.info('Cloud "{name}" [{id}]: NIO {nio} bound to port {port}'.format(name=self._name,
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id=self._id,
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nio=nio,
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port=port_number))
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self._nios[port_number] = nio
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try:
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yield from self._add_ubridge_connection(nio, port_number)
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except NodeError as e:
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del self._nios[port_number]
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raise e
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# Cleanup stuff
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except UbridgeError as e:
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try:
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self._delete_ubridge_connection(port_number)
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except UbridgeError:
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pass
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del self._nios[port_number]
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raise e
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@asyncio.coroutine
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def _delete_ubridge_connection(self, port_number):
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"""
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Deletes a connection in uBridge.
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:param port_number: adapter number
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"""
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bridge_name = "{}-{}".format(self._id, port_number)
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yield from self._ubridge_send("bridge delete {name}".format(name=bridge_name))
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@asyncio.coroutine
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def remove_nio(self, port_number):
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"""
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Removes the specified NIO as member of cloud.
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:param port_number: allocated port number
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:returns: the NIO that was bound to the allocated port
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"""
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if port_number not in self._nios:
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raise NodeError("Port {} is not allocated".format(port_number))
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nio = self._nios[port_number]
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if isinstance(nio, NIOUDP):
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self.manager.port_manager.release_udp_port(nio.lport, self._project)
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log.info('Cloud "{name}" [{id}]: NIO {nio} removed from port {port}'.format(name=self._name,
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id=self._id,
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nio=nio,
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port=port_number))
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del self._nios[port_number]
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yield from self._delete_ubridge_connection(port_number)
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return nio
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@asyncio.coroutine
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def start_capture(self, port_number, output_file, data_link_type="DLT_EN10MB"):
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"""
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Starts a packet capture.
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:param port_number: allocated port number
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:param output_file: PCAP destination file for the capture
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:param data_link_type: PCAP data link type (DLT_*), default is DLT_EN10MB
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"""
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if not [port["port_number"] for port in self._ports_mapping if port_number == port["port_number"]]:
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raise NodeError("Port {port_number} doesn't exist on cloud '{name}'".format(name=self.name,
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port_number=port_number))
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if port_number not in self._nios:
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raise NodeError("Port {} is not connected".format(port_number))
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nio = self._nios[port_number]
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if nio.capturing:
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raise NodeError("Packet capture is already activated on port {port_number}".format(port_number=port_number))
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nio.startPacketCapture(output_file)
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bridge_name = "{}-{}".format(self._id, port_number)
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yield from self._ubridge_send('bridge start_capture {name} "{output_file}"'.format(name=bridge_name,
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output_file=output_file))
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log.info("Cloud '{name}' [{id}]: starting packet capture on port {port_number}".format(name=self.name,
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id=self.id,
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port_number=port_number))
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@asyncio.coroutine
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def stop_capture(self, port_number):
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"""
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Stops a packet capture.
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:param port_number: allocated port number
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"""
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if not [port["port_number"] for port in self._ports_mapping if port_number == port["port_number"]]:
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raise NodeError("Port {port_number} doesn't exist on cloud '{name}'".format(name=self.name,
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port_number=port_number))
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if port_number not in self._nios:
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raise NodeError("Port {} is not connected".format(port_number))
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nio = self._nios[port_number]
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nio.stopPacketCapture()
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bridge_name = "{}-{}".format(self._id, port_number)
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yield from self._ubridge_send("bridge stop_capture {name}".format(name=bridge_name))
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log.info("Cloud'{name}' [{id}]: stopping packet capture on port {port_number}".format(name=self.name,
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id=self.id,
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port_number=port_number))
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