mirror of
https://github.com/GNS3/gns3-server
synced 2024-11-28 19:28:07 +00:00
321 lines
14 KiB
Python
321 lines
14 KiB
Python
# -*- coding: utf-8 -*-
|
|
#
|
|
# Copyright (C) 2013 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/>.
|
|
|
|
"""
|
|
Interface for Dynamips virtual Frame-Relay switch module.
|
|
http://github.com/GNS3/dynamips/blob/master/README.hypervisor#L642
|
|
"""
|
|
|
|
import asyncio
|
|
|
|
from .device import Device
|
|
from ..nios.nio_udp import NIOUDP
|
|
from ..dynamips_error import DynamipsError
|
|
|
|
import logging
|
|
log = logging.getLogger(__name__)
|
|
|
|
|
|
class FrameRelaySwitch(Device):
|
|
|
|
"""
|
|
Dynamips Frame Relay switch.
|
|
|
|
:param name: name for this switch
|
|
:param device_id: Device instance identifier
|
|
:param project: Project instance
|
|
:param manager: Parent VM Manager
|
|
:param hypervisor: Dynamips hypervisor instance
|
|
"""
|
|
|
|
def __init__(self, name, device_id, project, manager, hypervisor=None):
|
|
|
|
super().__init__(name, device_id, project, manager, hypervisor)
|
|
self._nios = {}
|
|
self._mappings = {}
|
|
|
|
def __json__(self):
|
|
|
|
mappings = {}
|
|
for source, destination in self._mappings.items():
|
|
mappings[str(source)] = str(destination)
|
|
|
|
return {"name": self.name,
|
|
"device_id": self.id,
|
|
"project_id": self.project.id,
|
|
"mappings": mappings}
|
|
|
|
@asyncio.coroutine
|
|
def create(self):
|
|
|
|
if self._hypervisor is None:
|
|
module_workdir = self.project.module_working_directory(self.manager.module_name.lower())
|
|
self._hypervisor = yield from self.manager.start_new_hypervisor(working_dir=module_workdir)
|
|
|
|
yield from self._hypervisor.send('frsw create "{}"'.format(self._name))
|
|
log.info('Frame Relay switch "{name}" [{id}] has been created'.format(name=self._name, id=self._id))
|
|
self._hypervisor.devices.append(self)
|
|
|
|
@asyncio.coroutine
|
|
def set_name(self, new_name):
|
|
"""
|
|
Renames this Frame Relay switch.
|
|
|
|
:param new_name: New name for this switch
|
|
"""
|
|
|
|
yield from self._hypervisor.send('frsw rename "{name}" "{new_name}"'.format(name=self._name, new_name=new_name))
|
|
log.info('Frame Relay switch "{name}" [{id}]: renamed to "{new_name}"'.format(name=self._name,
|
|
id=self._id,
|
|
new_name=new_name))
|
|
self._name = new_name
|
|
|
|
@property
|
|
def nios(self):
|
|
"""
|
|
Returns all the NIOs member of this Frame Relay switch.
|
|
|
|
:returns: nio list
|
|
"""
|
|
|
|
return self._nios
|
|
|
|
@property
|
|
def mappings(self):
|
|
"""
|
|
Returns port mappings
|
|
|
|
:returns: mappings list
|
|
"""
|
|
|
|
return self._mappings
|
|
|
|
@asyncio.coroutine
|
|
def delete(self):
|
|
"""
|
|
Deletes this Frame Relay switch.
|
|
"""
|
|
|
|
for nio in self._nios.values():
|
|
if nio and isinstance(nio, NIOUDP):
|
|
self.manager.port_manager.release_udp_port(nio.lport, self._project)
|
|
|
|
try:
|
|
yield from self._hypervisor.send('frsw delete "{}"'.format(self._name))
|
|
log.info('Frame Relay switch "{name}" [{id}] has been deleted'.format(name=self._name, id=self._id))
|
|
except DynamipsError:
|
|
log.debug("Could not properly delete Frame relay switch {}".format(self._name))
|
|
if self._hypervisor and self in self._hypervisor.devices:
|
|
self._hypervisor.devices.remove(self)
|
|
if self._hypervisor and not self._hypervisor.devices:
|
|
yield from self.hypervisor.stop()
|
|
|
|
def has_port(self, port):
|
|
"""
|
|
Checks if a port exists on this Frame Relay switch.
|
|
|
|
:returns: boolean
|
|
"""
|
|
|
|
if port in self._nios:
|
|
return True
|
|
return False
|
|
|
|
def add_nio(self, nio, port_number):
|
|
"""
|
|
Adds a NIO as new port on Frame Relay switch.
|
|
|
|
:param nio: NIO instance to add
|
|
:param port_number: port to allocate for the NIO
|
|
"""
|
|
|
|
if port_number in self._nios:
|
|
raise DynamipsError("Port {} isn't free".format(port_number))
|
|
|
|
log.info('Frame Relay switch "{name}" [{id}]: NIO {nio} bound to port {port}'.format(name=self._name,
|
|
id=self._id,
|
|
nio=nio,
|
|
port=port_number))
|
|
|
|
self._nios[port_number] = nio
|
|
|
|
@asyncio.coroutine
|
|
def remove_nio(self, port_number):
|
|
"""
|
|
Removes the specified NIO as member of this Frame Relay switch.
|
|
|
|
:param port_number: allocated port number
|
|
|
|
:returns: the NIO that was bound to the allocated port
|
|
"""
|
|
|
|
if port_number not in self._nios:
|
|
raise DynamipsError("Port {} is not allocated".format(port_number))
|
|
|
|
# remove VCs mapped with the port
|
|
for source, destination in self._mappings.copy().items():
|
|
source_port, source_dlci = source
|
|
destination_port, destination_dlci = destination
|
|
if port_number == source_port:
|
|
yield from self.unmap_vc(source_port, source_dlci, destination_port, destination_dlci)
|
|
yield from self.unmap_vc(destination_port, destination_dlci, source_port, source_dlci)
|
|
|
|
nio = self._nios[port_number]
|
|
if isinstance(nio, NIOUDP):
|
|
self.manager.port_manager.release_udp_port(nio.lport, self._project)
|
|
|
|
log.info('Frame Relay switch "{name}" [{id}]: NIO {nio} removed from port {port}'.format(name=self._name,
|
|
id=self._id,
|
|
nio=nio,
|
|
port=port_number))
|
|
|
|
del self._nios[port_number]
|
|
return nio
|
|
|
|
@asyncio.coroutine
|
|
def set_mappings(self, mappings):
|
|
"""
|
|
Applies VC mappings
|
|
|
|
:param mappings: mappings (dict)
|
|
"""
|
|
|
|
for source, destination in mappings.items():
|
|
if not isinstance(source, str) or not isinstance(destination, str):
|
|
raise DynamipsError("Invalid Frame-Relay mappings")
|
|
source_port, source_dlci = map(int, source.split(':'))
|
|
destination_port, destination_dlci = map(int, destination.split(':'))
|
|
if self.has_port(destination_port):
|
|
if (source_port, source_dlci) not in self.mappings and (destination_port, destination_dlci) not in self.mappings:
|
|
yield from self.map_vc(source_port, source_dlci, destination_port, destination_dlci)
|
|
yield from self.map_vc(destination_port, destination_dlci, source_port, source_dlci)
|
|
|
|
@asyncio.coroutine
|
|
def map_vc(self, port1, dlci1, port2, dlci2):
|
|
"""
|
|
Creates a new Virtual Circuit connection (unidirectional).
|
|
|
|
:param port1: input port
|
|
:param dlci1: input DLCI
|
|
:param port2: output port
|
|
:param dlci2: output DLCI
|
|
"""
|
|
|
|
if port1 not in self._nios:
|
|
raise DynamipsError("Port {} is not allocated".format(port1))
|
|
|
|
if port2 not in self._nios:
|
|
raise DynamipsError("Port {} is not allocated".format(port2))
|
|
|
|
nio1 = self._nios[port1]
|
|
nio2 = self._nios[port2]
|
|
|
|
yield from self._hypervisor.send('frsw create_vc "{name}" {input_nio} {input_dlci} {output_nio} {output_dlci}'.format(name=self._name,
|
|
input_nio=nio1,
|
|
input_dlci=dlci1,
|
|
output_nio=nio2,
|
|
output_dlci=dlci2))
|
|
|
|
log.info('Frame Relay switch "{name}" [{id}]: VC from port {port1} DLCI {dlci1} to port {port2} DLCI {dlci2} created'.format(name=self._name,
|
|
id=self._id,
|
|
port1=port1,
|
|
dlci1=dlci1,
|
|
port2=port2,
|
|
dlci2=dlci2))
|
|
|
|
self._mappings[(port1, dlci1)] = (port2, dlci2)
|
|
|
|
@asyncio.coroutine
|
|
def unmap_vc(self, port1, dlci1, port2, dlci2):
|
|
"""
|
|
Deletes a Virtual Circuit connection (unidirectional).
|
|
|
|
:param port1: input port
|
|
:param dlci1: input DLCI
|
|
:param port2: output port
|
|
:param dlci2: output DLCI
|
|
"""
|
|
|
|
if port1 not in self._nios:
|
|
raise DynamipsError("Port {} is not allocated".format(port1))
|
|
|
|
if port2 not in self._nios:
|
|
raise DynamipsError("Port {} is not allocated".format(port2))
|
|
|
|
nio1 = self._nios[port1]
|
|
nio2 = self._nios[port2]
|
|
|
|
yield from self._hypervisor.send('frsw delete_vc "{name}" {input_nio} {input_dlci} {output_nio} {output_dlci}'.format(name=self._name,
|
|
input_nio=nio1,
|
|
input_dlci=dlci1,
|
|
output_nio=nio2,
|
|
output_dlci=dlci2))
|
|
|
|
log.info('Frame Relay switch "{name}" [{id}]: VC from port {port1} DLCI {dlci1} to port {port2} DLCI {dlci2} deleted'.format(name=self._name,
|
|
id=self._id,
|
|
port1=port1,
|
|
dlci1=dlci1,
|
|
port2=port2,
|
|
dlci2=dlci2))
|
|
del self._mappings[(port1, dlci1)]
|
|
|
|
@asyncio.coroutine
|
|
def start_capture(self, port_number, output_file, data_link_type="DLT_FRELAY"):
|
|
"""
|
|
Starts a packet capture.
|
|
|
|
:param port_number: allocated port number
|
|
:param output_file: PCAP destination file for the capture
|
|
:param data_link_type: PCAP data link type (DLT_*), default is DLT_FRELAY
|
|
"""
|
|
|
|
if port_number not in self._nios:
|
|
raise DynamipsError("Port {} is not allocated".format(port_number))
|
|
|
|
nio = self._nios[port_number]
|
|
|
|
data_link_type = data_link_type.lower()
|
|
if data_link_type.startswith("dlt_"):
|
|
data_link_type = data_link_type[4:]
|
|
|
|
if nio.input_filter[0] is not None and nio.output_filter[0] is not None:
|
|
raise DynamipsError("Port {} has already a filter applied".format(port_number))
|
|
|
|
yield from nio.bind_filter("both", "capture")
|
|
yield from nio.setup_filter("both", '{} "{}"'.format(data_link_type, output_file))
|
|
|
|
log.info('Frame relay switch "{name}" [{id}]: starting packet capture on port {port}'.format(name=self._name,
|
|
id=self._id,
|
|
port=port_number))
|
|
|
|
@asyncio.coroutine
|
|
def stop_capture(self, port_number):
|
|
"""
|
|
Stops a packet capture.
|
|
|
|
:param port_number: allocated port number
|
|
"""
|
|
|
|
if port_number not in self._nios:
|
|
raise DynamipsError("Port {} is not allocated".format(port_number))
|
|
|
|
nio = self._nios[port_number]
|
|
yield from nio.unbind_filter("both")
|
|
log.info('Frame relay switch "{name}" [{id}]: stopping packet capture on port {port}'.format(name=self._name,
|
|
id=self._id,
|
|
port=port_number))
|