gns3-server/gns3server/compute/builtin/nodes/nat.py
2021-04-17 23:34:28 +09:30

89 lines
3.0 KiB
Python

#!/usr/bin/env python
#
# Copyright (C) 2016 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/>.
import sys
from .cloud import Cloud
from ...error import NodeError
import gns3server.utils.interfaces
from gns3server.config import Config
import logging
log = logging.getLogger(__name__)
class Nat(Cloud):
"""
A portable and pre-configured node allowing topologies to get a
NAT access.
"""
def __init__(self, name, node_id, project, manager, ports=None):
if sys.platform.startswith("linux"):
nat_interface = Config.instance().settings.Server.default_nat_interface
if not nat_interface:
nat_interface = "virbr0"
if nat_interface not in [interface["name"] for interface in gns3server.utils.interfaces.interfaces()]:
raise NodeError(f"NAT interface {nat_interface} is missing, please install libvirt")
interface = nat_interface
else:
nat_interface = Config.instance().settings.Server.default_nat_interface
if not nat_interface:
nat_interface = "vmnet8"
interfaces = list(
filter(
lambda x: nat_interface in x.lower(),
[interface["name"] for interface in gns3server.utils.interfaces.interfaces()],
)
)
if not len(interfaces):
raise NodeError(
f"NAT interface {nat_interface} is missing. "
f"You need to install VMware or use the NAT node on GNS3 VM"
)
interface = interfaces[0] # take the first available interface containing the vmnet8 name
log.info(f"NAT node '{name}' configured to use NAT interface '{interface}'")
ports = [{"name": "nat0", "type": "ethernet", "interface": interface, "port_number": 0}]
super().__init__(name, node_id, project, manager, ports=ports)
@property
def ports_mapping(self):
return self._ports_mapping
@ports_mapping.setter
def ports_mapping(self, ports):
# It's not allowed to change it
pass
@classmethod
def is_supported(self):
return True
def asdict(self):
return {
"name": self.name,
"usage": self.usage,
"node_id": self.id,
"project_id": self.project.id,
"status": "started",
"ports_mapping": self.ports_mapping,
}