mirror of
https://github.com/GNS3/gns3-server
synced 2024-12-11 09:38:08 +00:00
137 lines
4.2 KiB
Python
137 lines
4.2 KiB
Python
#
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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 UDP NIOs.
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"""
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import asyncio
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import uuid
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from gns3server.compute.nios import nio_udp
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from .nio import NIO
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import logging
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log = logging.getLogger(__name__)
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class NIOUDP(NIO):
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"""
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Dynamips UDP NIO.
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:param hypervisor: Dynamips hypervisor instance
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:param lport: local port number
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:param rhost: remote address/host
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:param rport: remote port number
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"""
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def __init__(self, node, lport, rhost, rport):
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# create an unique name
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name = f"udp-{uuid.uuid4()}"
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self._lport = lport
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self._rhost = rhost
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self._rport = rport
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self._local_tunnel_lport = None
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self._local_tunnel_rport = None
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self._node = node
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super().__init__(name, node.hypervisor)
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async def create(self):
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if not self._hypervisor:
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return
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# Ubridge is not supported
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if not hasattr(self._node, "add_ubridge_udp_connection"):
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await self._hypervisor.send(
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"nio create_udp {name} {lport} {rhost} {rport}".format(
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name=self._name, lport=self._lport, rhost=self._rhost, rport=self._rport
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)
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)
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return
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self._local_tunnel_lport = self._node.manager.port_manager.get_free_udp_port(self._node.project)
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self._local_tunnel_rport = self._node.manager.port_manager.get_free_udp_port(self._node.project)
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self._bridge_name = f"DYNAMIPS-{self._local_tunnel_lport}-{self._local_tunnel_rport}"
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await self._hypervisor.send(
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"nio create_udp {name} {lport} {rhost} {rport}".format(
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name=self._name, lport=self._local_tunnel_lport, rhost="127.0.0.1", rport=self._local_tunnel_rport
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)
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)
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log.info(
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"NIO UDP {name} created with lport={lport}, rhost={rhost}, rport={rport}".format(
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name=self._name, lport=self._lport, rhost=self._rhost, rport=self._rport
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)
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)
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self._source_nio = nio_udp.NIOUDP(self._local_tunnel_rport, "127.0.0.1", self._local_tunnel_lport)
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self._destination_nio = nio_udp.NIOUDP(self._lport, self._rhost, self._rport)
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self._destination_nio.filters = self._filters
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await self._node.add_ubridge_udp_connection(self._bridge_name, self._source_nio, self._destination_nio)
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async def update(self):
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self._destination_nio.filters = self._filters
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await self._node.update_ubridge_udp_connection(self._bridge_name, self._source_nio, self._destination_nio)
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async def close(self):
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if self._local_tunnel_lport:
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await self._node.ubridge_delete_bridge(self._bridge_name)
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self._node.manager.port_manager.release_udp_port(self._local_tunnel_lport, self._node.project)
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if self._local_tunnel_rport:
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self._node.manager.port_manager.release_udp_port(self._local_tunnel_rport, self._node.project)
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self._node.manager.port_manager.release_udp_port(self._lport, self._node.project)
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@property
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def lport(self):
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"""
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Returns the local port
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:returns: local port number
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"""
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return self._lport
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@property
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def rhost(self):
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"""
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Returns the remote host
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:returns: remote address/host
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"""
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return self._rhost
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@property
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def rport(self):
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"""
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Returns the remote port
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:returns: remote port number
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"""
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return self._rport
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def asdict(self):
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return {
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"type": "nio_udp",
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"lport": self._lport,
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"rport": self._rport,
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"rhost": self._rhost
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}
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