mirror of
https://github.com/GNS3/gns3-server
synced 2024-12-29 10:18:10 +00:00
389 lines
16 KiB
Python
389 lines
16 KiB
Python
# -*- coding: utf-8 -*-
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#
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# Copyright (C) 2013 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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"""
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Interface for Dynamips virtual Ethernet switch module ("ethsw").
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http://github.com/GNS3/dynamips/blob/master/README.hypervisor#L558
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"""
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import asyncio
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from gns3server.utils import parse_version
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from .device import Device
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from ..nios.nio_udp import NIOUDP
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from ..dynamips_error import DynamipsError
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from ...error import NodeError
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import logging
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log = logging.getLogger(__name__)
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class EthernetSwitch(Device):
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"""
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Dynamips Ethernet switch.
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:param name: name for this switch
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:param node_id: Node instance identifier
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:param project: Project instance
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:param manager: Parent VM Manager
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:param ports: initial switch ports
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:param hypervisor: Dynamips hypervisor instance
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"""
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def __init__(self, name, node_id, project, manager, ports=None, hypervisor=None):
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super().__init__(name, node_id, project, manager, hypervisor)
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self._nios = {}
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self._mappings = {}
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if ports is None:
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# create 8 ports by default
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self._ports = []
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for port_number in range(0, 8):
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self._ports.append({"port_number": port_number,
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"name": "Ethernet{}".format(port_number),
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"type": "access",
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"vlan": 1})
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else:
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self._ports = ports
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def __json__(self):
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ethernet_switch_info = {"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,
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"status": "started"}
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return ethernet_switch_info
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@property
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def ports_mapping(self):
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"""
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Ports on this switch
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:returns: ports info
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"""
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return self._ports
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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 switch
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:param ports: ports info
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"""
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if ports != self._ports:
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if len(self._nios) > 0:
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raise NodeError("Can't modify a switch already connected.")
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port_number = 0
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for port in ports:
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port["name"] = "Ethernet{}".format(port_number)
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port["port_number"] = port_number
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port_number += 1
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self._ports = ports
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@asyncio.coroutine
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def create(self):
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if self._hypervisor is None:
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module_workdir = self.project.module_working_directory(self.manager.module_name.lower())
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self._hypervisor = yield from self.manager.start_new_hypervisor(working_dir=module_workdir)
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yield from self._hypervisor.send('ethsw create "{}"'.format(self._name))
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log.info('Ethernet switch "{name}" [{id}] has been created'.format(name=self._name, id=self._id))
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self._hypervisor.devices.append(self)
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@asyncio.coroutine
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def set_name(self, new_name):
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"""
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Renames this Ethernet switch.
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:param new_name: New name for this switch
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"""
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yield from self._hypervisor.send('ethsw rename "{name}" "{new_name}"'.format(name=self._name, new_name=new_name))
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log.info('Ethernet switch "{name}" [{id}]: renamed to "{new_name}"'.format(name=self._name,
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id=self._id,
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new_name=new_name))
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self._name = new_name
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@property
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def nios(self):
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"""
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Returns all the NIOs member of this Ethernet switch.
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:returns: nio list
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"""
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return self._nios
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@property
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def mappings(self):
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"""
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Returns port mappings
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:returns: mappings list
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"""
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return self._mappings
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@asyncio.coroutine
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def delete(self):
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return (yield from self.close())
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@asyncio.coroutine
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def close(self):
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"""
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Deletes this Ethernet switch.
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"""
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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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if self._hypervisor:
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try:
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yield from self._hypervisor.send('ethsw delete "{}"'.format(self._name))
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log.info('Ethernet switch "{name}" [{id}] has been deleted'.format(name=self._name, id=self._id))
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except DynamipsError:
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log.debug("Could not properly delete Ethernet switch {}".format(self._name))
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if self._hypervisor and self in self._hypervisor.devices:
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self._hypervisor.devices.remove(self)
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if self._hypervisor and not self._hypervisor.devices:
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yield from self.hypervisor.stop()
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self._hypervisor = None
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return True
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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 Ethernet switch.
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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 DynamipsError("Port {} isn't free".format(port_number))
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yield from self._hypervisor.send('ethsw add_nio "{name}" {nio}'.format(name=self._name, nio=nio))
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log.info('Ethernet switch "{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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for port_settings in self._ports:
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if port_settings["port_number"] == port_number:
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yield from self.set_port_settings(port_number, port_settings)
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break
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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 this Ethernet switch.
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:param port_number: allocated port number
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:returns: the NIO that was bound to the port
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"""
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if port_number not in self._nios:
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raise DynamipsError("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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yield from self._hypervisor.send('ethsw remove_nio "{name}" {nio}'.format(name=self._name, nio=nio))
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log.info('Ethernet switch "{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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if port_number in self._mappings:
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del self._mappings[port_number]
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return nio
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@asyncio.coroutine
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def set_port_settings(self, port_number, settings):
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"""
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Applies port settings to a specific port.
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:param port_number: port number to set the settings
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:param settings: port settings
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"""
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if settings["type"] == "access":
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yield from self.set_access_port(port_number, settings["vlan"])
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elif settings["type"] == "dot1q":
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yield from self.set_dot1q_port(port_number, settings["vlan"])
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elif settings["type"] == "qinq":
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yield from self.set_qinq_port(port_number, settings["vlan"], settings["ethertype"])
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@asyncio.coroutine
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def set_access_port(self, port_number, vlan_id):
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"""
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Sets the specified port as an ACCESS port.
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:param port_number: allocated port number
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:param vlan_id: VLAN number membership
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"""
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if port_number not in self._nios:
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raise DynamipsError("Port {} is not allocated".format(port_number))
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nio = self._nios[port_number]
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yield from self._hypervisor.send('ethsw set_access_port "{name}" {nio} {vlan_id}'.format(name=self._name,
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nio=nio,
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vlan_id=vlan_id))
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log.info('Ethernet switch "{name}" [{id}]: port {port} set as an access port in VLAN {vlan_id}'.format(name=self._name,
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id=self._id,
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port=port_number,
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vlan_id=vlan_id))
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self._mappings[port_number] = ("access", vlan_id)
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@asyncio.coroutine
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def set_dot1q_port(self, port_number, native_vlan):
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"""
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Sets the specified port as a 802.1Q trunk port.
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:param port_number: allocated port number
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:param native_vlan: native VLAN for this trunk port
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"""
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if port_number not in self._nios:
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raise DynamipsError("Port {} is not allocated".format(port_number))
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nio = self._nios[port_number]
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yield from self._hypervisor.send('ethsw set_dot1q_port "{name}" {nio} {native_vlan}'.format(name=self._name,
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nio=nio,
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native_vlan=native_vlan))
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log.info('Ethernet switch "{name}" [{id}]: port {port} set as a 802.1Q port with native VLAN {vlan_id}'.format(name=self._name,
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id=self._id,
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port=port_number,
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vlan_id=native_vlan))
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self._mappings[port_number] = ("dot1q", native_vlan)
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@asyncio.coroutine
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def set_qinq_port(self, port_number, outer_vlan, ethertype):
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"""
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Sets the specified port as a trunk (QinQ) port.
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:param port_number: allocated port number
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:param outer_vlan: outer VLAN (transport VLAN) for this QinQ port
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"""
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if port_number not in self._nios:
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raise DynamipsError("Port {} is not allocated".format(port_number))
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nio = self._nios[port_number]
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if ethertype != "0x8100" and parse_version(self.hypervisor.version) < parse_version('0.2.16'):
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raise DynamipsError("Dynamips version required is >= 0.2.16 to change the default QinQ Ethernet type, detected version is {}".format(self.hypervisor.version))
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yield from self._hypervisor.send('ethsw set_qinq_port "{name}" {nio} {outer_vlan} {ethertype}'.format(name=self._name,
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nio=nio,
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outer_vlan=outer_vlan,
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ethertype=ethertype if ethertype != "0x8100" else ""))
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log.info('Ethernet switch "{name}" [{id}]: port {port} set as a QinQ ({ethertype}) port with outer VLAN {vlan_id}'.format(name=self._name,
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id=self._id,
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port=port_number,
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vlan_id=outer_vlan,
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ethertype=ethertype))
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self._mappings[port_number] = ("qinq", outer_vlan, ethertype)
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@asyncio.coroutine
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def get_mac_addr_table(self):
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"""
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Returns the MAC address table for this Ethernet switch.
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:returns: list of entries (Ethernet address, VLAN, NIO)
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"""
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mac_addr_table = yield from self._hypervisor.send('ethsw show_mac_addr_table "{}"'.format(self._name))
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return mac_addr_table
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@asyncio.coroutine
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def clear_mac_addr_table(self):
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"""
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Clears the MAC address table for this Ethernet switch.
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"""
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yield from self._hypervisor.send('ethsw clear_mac_addr_table "{}"'.format(self._name))
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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 port_number not in self._nios:
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raise DynamipsError("Port {} is not allocated".format(port_number))
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nio = self._nios[port_number]
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if not nio:
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raise DynamipsError("Port {} is not connected".format(port_number))
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data_link_type = data_link_type.lower()
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if data_link_type.startswith("dlt_"):
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data_link_type = data_link_type[4:]
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if nio.input_filter[0] is not None and nio.output_filter[0] is not None:
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raise DynamipsError("Port {} has already a filter applied".format(port_number))
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yield from nio.bind_filter("both", "capture")
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yield from nio.setup_filter("both", '{} "{}"'.format(data_link_type, output_file))
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log.info('Ethernet switch "{name}" [{id}]: starting packet capture on port {port}'.format(name=self._name,
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id=self._id,
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port=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 port_number not in self._nios:
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raise DynamipsError("Port {} is not allocated".format(port_number))
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nio = self._nios[port_number]
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if not nio:
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raise DynamipsError("Port {} is not connected".format(port_number))
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yield from nio.unbind_filter("both")
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log.info('Ethernet switch "{name}" [{id}]: stopping packet capture on port {port}'.format(name=self._name,
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id=self._id,
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port=port_number))
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