mirror of
https://github.com/GNS3/gns3-server.git
synced 2024-12-23 06:32:26 +00:00
162 lines
5.7 KiB
Python
162 lines
5.7 KiB
Python
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# -*- 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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Hub object that uses the Bridge interface to create a hub with ports.
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"""
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import asyncio
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from .bridge import Bridge
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from ..dynamips_error import DynamipsError
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import logging
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log = logging.getLogger(__name__)
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class EthernetHub(Bridge):
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"""
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Dynamips Ethernet hub (based on Bridge)
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:param name: name for this hub
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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 hypervisor: Dynamips hypervisor instance
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"""
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def __init__(self, name, node_id, project, manager, hypervisor=None):
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Bridge.__init__(self, name, node_id, project, manager, hypervisor)
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self._mapping = {}
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@asyncio.coroutine
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def create(self):
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yield from Bridge.create()
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log.info('Ethernet hub "{name}" [{id}] has been created'.format(name=self._name, id=self._id))
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@property
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def mapping(self):
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"""
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Returns port mapping
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:returns: mapping list
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"""
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return self._mapping
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@asyncio.coroutine
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def delete(self):
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"""
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Deletes this hub.
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"""
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yield from Bridge.delete(self)
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log.info('Ethernet hub "{name}" [{id}] has been deleted'.format(name=self._name, id=self._id))
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self._instances.remove(self._id)
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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 hub.
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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._mapping:
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raise DynamipsError("Port {} isn't free".format(port_number))
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yield from Bridge.add_nio(self, nio)
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log.info('Ethernet hub "{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._mapping[port_number] = nio
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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 hub.
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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._mapping:
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raise DynamipsError("Port {} is not allocated".format(port_number))
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nio = self._mapping[port_number]
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yield from Bridge.remove_nio(self, 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._mapping[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 port_number not in self._mapping:
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raise DynamipsError("Port {} is not allocated".format(port_number))
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nio = self._mapping[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 hub "{name}" [{id}]: starting packet capture on {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._mapping:
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raise DynamipsError("Port {} is not allocated".format(port_number))
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nio = self._mapping[port_number]
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yield from nio.unbind_filter("both")
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log.info('Ethernet hub "{name}" [{id}]: stopping packet capture on {port}'.format(name=self._name,
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id=self._id,
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port=port_number))
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