mirror of
https://github.com/GNS3/gns3-server
synced 2024-12-27 09:18:09 +00:00
474 lines
27 KiB
Python
474 lines
27 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 ATM switch module ("atmsw").
|
|
http://github.com/GNS3/dynamips/blob/master/README.hypervisor#L593
|
|
"""
|
|
|
|
import asyncio
|
|
import re
|
|
|
|
from .device import Device
|
|
from ..nios.nio_udp import NIOUDP
|
|
from ..dynamips_error import DynamipsError
|
|
|
|
import logging
|
|
log = logging.getLogger(__name__)
|
|
|
|
|
|
class ATMSwitch(Device):
|
|
|
|
"""
|
|
Dynamips ATM switch.
|
|
|
|
:param name: name for this switch
|
|
:param node_id: Node instance identifier
|
|
:param project: Project instance
|
|
:param manager: Parent VM Manager
|
|
:param hypervisor: Dynamips hypervisor instance
|
|
"""
|
|
|
|
def __init__(self, name, node_id, project, manager, mappings=None, hypervisor=None):
|
|
|
|
super().__init__(name, node_id, project, manager, hypervisor)
|
|
self._nios = {}
|
|
self._active_mappings = {}
|
|
self._mappings = {}
|
|
if mappings:
|
|
self._mappings = mappings
|
|
|
|
def __json__(self):
|
|
|
|
mappings = {}
|
|
for source, destination in self._mappings.items():
|
|
mappings[source] = destination
|
|
|
|
return {"name": self.name,
|
|
"node_id": self.id,
|
|
"project_id": self.project.id,
|
|
"mappings": mappings,
|
|
"status": "started"}
|
|
|
|
async def create(self):
|
|
|
|
if self._hypervisor is None:
|
|
module_workdir = self.project.module_working_directory(self.manager.module_name.lower())
|
|
self._hypervisor = await self.manager.start_new_hypervisor(working_dir=module_workdir)
|
|
|
|
await self._hypervisor.send('atmsw create "{}"'.format(self._name))
|
|
log.info('ATM switch "{name}" [{id}] has been created'.format(name=self._name, id=self._id))
|
|
self._hypervisor.devices.append(self)
|
|
|
|
async def set_name(self, new_name):
|
|
"""
|
|
Renames this ATM switch.
|
|
|
|
:param new_name: New name for this switch
|
|
"""
|
|
|
|
await self._hypervisor.send('atm rename "{name}" "{new_name}"'.format(name=self._name, new_name=new_name))
|
|
log.info('ATM 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 ATM switch.
|
|
|
|
:returns: nio list
|
|
"""
|
|
|
|
return self._nios
|
|
|
|
@property
|
|
def mappings(self):
|
|
"""
|
|
Returns port mappings
|
|
|
|
:returns: mappings list
|
|
"""
|
|
|
|
return self._mappings
|
|
|
|
@mappings.setter
|
|
def mappings(self, mappings):
|
|
"""
|
|
Sets port mappings
|
|
|
|
:param mappings: mappings list
|
|
"""
|
|
|
|
self._mappings = mappings
|
|
|
|
async def close(self):
|
|
for nio in self._nios.values():
|
|
if nio:
|
|
await nio.close()
|
|
|
|
if self._hypervisor:
|
|
try:
|
|
await self._hypervisor.send('atmsw delete "{}"'.format(self._name))
|
|
log.info('ATM switch "{name}" [{id}] has been deleted'.format(name=self._name, id=self._id))
|
|
except DynamipsError:
|
|
log.debug("Could not properly delete ATM 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:
|
|
await self.hypervisor.stop()
|
|
self._hypervisor = None
|
|
return True
|
|
|
|
async def delete(self):
|
|
"""
|
|
Deletes this ATM switch.
|
|
"""
|
|
await self.close()
|
|
|
|
def has_port(self, port):
|
|
"""
|
|
Checks if a port exists on this ATM switch.
|
|
|
|
:returns: boolean
|
|
"""
|
|
|
|
if port in self._nios:
|
|
return True
|
|
return False
|
|
|
|
async def add_nio(self, nio, port_number):
|
|
"""
|
|
Adds a NIO as new port on ATM 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('ATM switch "{name}" [id={id}]: NIO {nio} bound to port {port}'.format(name=self._name,
|
|
id=self._id,
|
|
nio=nio,
|
|
port=port_number))
|
|
|
|
self._nios[port_number] = nio
|
|
await self.set_mappings(self._mappings)
|
|
|
|
async def remove_nio(self, port_number):
|
|
"""
|
|
Removes the specified NIO as member of this ATM switch.
|
|
|
|
:param port_number: allocated port number
|
|
"""
|
|
|
|
if port_number not in self._nios:
|
|
raise DynamipsError("Port {} is not allocated".format(port_number))
|
|
|
|
await self.stop_capture(port_number)
|
|
# remove VCs mapped with the port
|
|
for source, destination in self._active_mappings.copy().items():
|
|
if len(source) == 3 and len(destination) == 3:
|
|
# remove the virtual channels mapped with this port/nio
|
|
source_port, source_vpi, source_vci = source
|
|
destination_port, destination_vpi, destination_vci = destination
|
|
if port_number == source_port:
|
|
log.info('ATM switch "{name}" [{id}]: unmapping VCC between port {source_port} VPI {source_vpi} VCI {source_vci} and port {destination_port} VPI {destination_vpi} VCI {destination_vci}'.format(name=self._name,
|
|
id=self._id,
|
|
source_port=source_port,
|
|
source_vpi=source_vpi,
|
|
source_vci=source_vci,
|
|
destination_port=destination_port,
|
|
destination_vpi=destination_vpi,
|
|
destination_vci=destination_vci))
|
|
await self.unmap_pvc(source_port, source_vpi, source_vci, destination_port, destination_vpi, destination_vci)
|
|
await self.unmap_pvc(destination_port, destination_vpi, destination_vci, source_port, source_vpi, source_vci)
|
|
else:
|
|
# remove the virtual paths mapped with this port/nio
|
|
source_port, source_vpi = source
|
|
destination_port, destination_vpi = destination
|
|
if port_number == source_port:
|
|
log.info('ATM switch "{name}" [{id}]: unmapping VPC between port {source_port} VPI {source_vpi} and port {destination_port} VPI {destination_vpi}'.format(name=self._name,
|
|
id=self._id,
|
|
source_port=source_port,
|
|
source_vpi=source_vpi,
|
|
destination_port=destination_port,
|
|
destination_vpi=destination_vpi))
|
|
await self.unmap_vp(source_port, source_vpi, destination_port, destination_vpi)
|
|
await self.unmap_vp(destination_port, destination_vpi, source_port, source_vpi)
|
|
|
|
nio = self._nios[port_number]
|
|
if isinstance(nio, NIOUDP):
|
|
self.manager.port_manager.release_udp_port(nio.lport, self._project)
|
|
log.info('ATM 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
|
|
|
|
def get_nio(self, port_number):
|
|
"""
|
|
Gets a port NIO binding.
|
|
|
|
:param port_number: port number
|
|
|
|
:returns: NIO instance
|
|
"""
|
|
|
|
if port_number not in self._nios:
|
|
raise DynamipsError("Port {} is not allocated".format(port_number))
|
|
|
|
nio = self._nios[port_number]
|
|
|
|
if not nio:
|
|
raise DynamipsError("Port {} is not connected".format(port_number))
|
|
|
|
return nio
|
|
|
|
async def set_mappings(self, mappings):
|
|
"""
|
|
Applies VC mappings
|
|
|
|
:param mappings: mappings (dict)
|
|
"""
|
|
|
|
pvc_entry = re.compile(r"""^([0-9]*):([0-9]*):([0-9]*)$""")
|
|
for source, destination in mappings.items():
|
|
if not isinstance(source, str) or not isinstance(destination, str):
|
|
raise DynamipsError("Invalid ATM mappings")
|
|
match_source_pvc = pvc_entry.search(source)
|
|
match_destination_pvc = pvc_entry.search(destination)
|
|
if match_source_pvc and match_destination_pvc:
|
|
# add the virtual channels
|
|
source_port, source_vpi, source_vci = map(int, match_source_pvc.group(1, 2, 3))
|
|
destination_port, destination_vpi, destination_vci = map(int, match_destination_pvc.group(1, 2, 3))
|
|
if self.has_port(destination_port):
|
|
if (source_port, source_vpi, source_vci) not in self._active_mappings and \
|
|
(destination_port, destination_vpi, destination_vci) not in self._active_mappings:
|
|
log.info('ATM switch "{name}" [{id}]: mapping VCC between port {source_port} VPI {source_vpi} VCI {source_vci} and port {destination_port} VPI {destination_vpi} VCI {destination_vci}'.format(name=self._name,
|
|
id=self._id,
|
|
source_port=source_port,
|
|
source_vpi=source_vpi,
|
|
source_vci=source_vci,
|
|
destination_port=destination_port,
|
|
destination_vpi=destination_vpi,
|
|
destination_vci=destination_vci))
|
|
await self.map_pvc(source_port, source_vpi, source_vci, destination_port, destination_vpi, destination_vci)
|
|
await self.map_pvc(destination_port, destination_vpi, destination_vci, source_port, source_vpi, source_vci)
|
|
else:
|
|
# add the virtual paths
|
|
source_port, source_vpi = map(int, source.split(':'))
|
|
destination_port, destination_vpi = map(int, destination.split(':'))
|
|
if self.has_port(destination_port):
|
|
if (source_port, source_vpi) not in self._active_mappings and (destination_port, destination_vpi) not in self._active_mappings:
|
|
log.info('ATM switch "{name}" [{id}]: mapping VPC between port {source_port} VPI {source_vpi} and port {destination_port} VPI {destination_vpi}'.format(name=self._name,
|
|
id=self._id,
|
|
source_port=source_port,
|
|
source_vpi=source_vpi,
|
|
destination_port=destination_port,
|
|
destination_vpi=destination_vpi))
|
|
await self.map_vp(source_port, source_vpi, destination_port, destination_vpi)
|
|
await self.map_vp(destination_port, destination_vpi, source_port, source_vpi)
|
|
|
|
async def map_vp(self, port1, vpi1, port2, vpi2):
|
|
"""
|
|
Creates a new Virtual Path connection.
|
|
|
|
:param port1: input port
|
|
:param vpi1: input vpi
|
|
:param port2: output port
|
|
:param vpi2: output vpi
|
|
"""
|
|
|
|
if port1 not in self._nios:
|
|
return
|
|
|
|
if port2 not in self._nios:
|
|
return
|
|
|
|
nio1 = self._nios[port1]
|
|
nio2 = self._nios[port2]
|
|
|
|
await self._hypervisor.send('atmsw create_vpc "{name}" {input_nio} {input_vpi} {output_nio} {output_vpi}'.format(name=self._name,
|
|
input_nio=nio1,
|
|
input_vpi=vpi1,
|
|
output_nio=nio2,
|
|
output_vpi=vpi2))
|
|
|
|
log.info('ATM switch "{name}" [{id}]: VPC from port {port1} VPI {vpi1} to port {port2} VPI {vpi2} created'.format(name=self._name,
|
|
id=self._id,
|
|
port1=port1,
|
|
vpi1=vpi1,
|
|
port2=port2,
|
|
vpi2=vpi2))
|
|
|
|
self._active_mappings[(port1, vpi1)] = (port2, vpi2)
|
|
|
|
async def unmap_vp(self, port1, vpi1, port2, vpi2):
|
|
"""
|
|
Deletes a new Virtual Path connection.
|
|
|
|
:param port1: input port
|
|
:param vpi1: input vpi
|
|
:param port2: output port
|
|
:param vpi2: output vpi
|
|
"""
|
|
|
|
if port1 not in self._nios:
|
|
return
|
|
|
|
if port2 not in self._nios:
|
|
return
|
|
|
|
nio1 = self._nios[port1]
|
|
nio2 = self._nios[port2]
|
|
|
|
await self._hypervisor.send('atmsw delete_vpc "{name}" {input_nio} {input_vpi} {output_nio} {output_vpi}'.format(name=self._name,
|
|
input_nio=nio1,
|
|
input_vpi=vpi1,
|
|
output_nio=nio2,
|
|
output_vpi=vpi2))
|
|
|
|
log.info('ATM switch "{name}" [{id}]: VPC from port {port1} VPI {vpi1} to port {port2} VPI {vpi2} deleted'.format(name=self._name,
|
|
id=self._id,
|
|
port1=port1,
|
|
vpi1=vpi1,
|
|
port2=port2,
|
|
vpi2=vpi2))
|
|
|
|
del self._active_mappings[(port1, vpi1)]
|
|
|
|
async def map_pvc(self, port1, vpi1, vci1, port2, vpi2, vci2):
|
|
"""
|
|
Creates a new Virtual Channel connection (unidirectional).
|
|
|
|
:param port1: input port
|
|
:param vpi1: input vpi
|
|
:param vci1: input vci
|
|
:param port2: output port
|
|
:param vpi2: output vpi
|
|
:param vci2: output vci
|
|
"""
|
|
|
|
if port1 not in self._nios:
|
|
return
|
|
|
|
if port2 not in self._nios:
|
|
return
|
|
|
|
nio1 = self._nios[port1]
|
|
nio2 = self._nios[port2]
|
|
|
|
await self._hypervisor.send('atmsw create_vcc "{name}" {input_nio} {input_vpi} {input_vci} {output_nio} {output_vpi} {output_vci}'.format(name=self._name,
|
|
input_nio=nio1,
|
|
input_vpi=vpi1,
|
|
input_vci=vci1,
|
|
output_nio=nio2,
|
|
output_vpi=vpi2,
|
|
output_vci=vci2))
|
|
|
|
log.info('ATM switch "{name}" [{id}]: VCC from port {port1} VPI {vpi1} VCI {vci1} to port {port2} VPI {vpi2} VCI {vci2} created'.format(name=self._name,
|
|
id=self._id,
|
|
port1=port1,
|
|
vpi1=vpi1,
|
|
vci1=vci1,
|
|
port2=port2,
|
|
vpi2=vpi2,
|
|
vci2=vci2))
|
|
|
|
self._active_mappings[(port1, vpi1, vci1)] = (port2, vpi2, vci2)
|
|
|
|
async def unmap_pvc(self, port1, vpi1, vci1, port2, vpi2, vci2):
|
|
"""
|
|
Deletes a new Virtual Channel connection (unidirectional).
|
|
|
|
:param port1: input port
|
|
:param vpi1: input vpi
|
|
:param vci1: input vci
|
|
:param port2: output port
|
|
:param vpi2: output vpi
|
|
:param vci2: output vci
|
|
"""
|
|
|
|
if port1 not in self._nios:
|
|
return
|
|
|
|
if port2 not in self._nios:
|
|
return
|
|
|
|
nio1 = self._nios[port1]
|
|
nio2 = self._nios[port2]
|
|
|
|
await self._hypervisor.send('atmsw delete_vcc "{name}" {input_nio} {input_vpi} {input_vci} {output_nio} {output_vpi} {output_vci}'.format(name=self._name,
|
|
input_nio=nio1,
|
|
input_vpi=vpi1,
|
|
input_vci=vci1,
|
|
output_nio=nio2,
|
|
output_vpi=vpi2,
|
|
output_vci=vci2))
|
|
|
|
log.info('ATM switch "{name}" [{id}]: VCC from port {port1} VPI {vpi1} VCI {vci1} to port {port2} VPI {vpi2} VCI {vci2} deleted'.format(name=self._name,
|
|
id=self._id,
|
|
port1=port1,
|
|
vpi1=vpi1,
|
|
vci1=vci1,
|
|
port2=port2,
|
|
vpi2=vpi2,
|
|
vci2=vci2))
|
|
del self._active_mappings[(port1, vpi1, vci1)]
|
|
|
|
async def start_capture(self, port_number, output_file, data_link_type="DLT_ATM_RFC1483"):
|
|
"""
|
|
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_ATM_RFC1483
|
|
"""
|
|
|
|
nio = self.get_nio(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))
|
|
|
|
await nio.start_packet_capture(output_file, data_link_type)
|
|
log.info('ATM switch "{name}" [{id}]: starting packet capture on port {port}'.format(name=self._name,
|
|
id=self._id,
|
|
port=port_number))
|
|
|
|
async def stop_capture(self, port_number):
|
|
"""
|
|
Stops a packet capture.
|
|
|
|
:param port_number: allocated port number
|
|
"""
|
|
|
|
nio = self.get_nio(port_number)
|
|
if not nio.capturing:
|
|
return
|
|
await nio.stop_packet_capture()
|
|
log.info('ATM switch "{name}" [{id}]: stopping packet capture on port {port}'.format(name=self._name,
|
|
id=self._id,
|
|
port=port_number))
|