mirror of
https://github.com/GNS3/gns3-server
synced 2024-12-27 01:08:33 +00:00
92 lines
3.6 KiB
Python
92 lines
3.6 KiB
Python
#!/usr/bin/env python
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#
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# Copyright (C) 2016 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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import sys
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from .cloud import Cloud
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from ...error import NodeError
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import gns3server.utils.interfaces
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from gns3server.config import Config
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import logging
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log = logging.getLogger(__name__)
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class Nat(Cloud):
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"""
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A portable and pre-configured node allowing topologies to get a
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NAT access.
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"""
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def __init__(self, name, node_id, project, manager, ports=None):
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allowed_interfaces = Config.instance().get_section_config("Server").get("allowed_interfaces", None)
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if allowed_interfaces:
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allowed_interfaces = allowed_interfaces.split(',')
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if sys.platform.startswith("linux"):
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nat_interface = Config.instance().get_section_config("Server").get("default_nat_interface", "virbr0")
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if allowed_interfaces and nat_interface not in allowed_interfaces:
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raise NodeError("NAT interface {} is not allowed be used on this server. "
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"Please check the server configuration file.".format(nat_interface))
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if nat_interface not in [interface["name"] for interface in gns3server.utils.interfaces.interfaces()]:
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raise NodeError("NAT interface {} is missing, please install libvirt".format(nat_interface))
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interface = nat_interface
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else:
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nat_interface = Config.instance().get_section_config("Server").get("default_nat_interface", "vmnet8")
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if allowed_interfaces and nat_interface not in allowed_interfaces:
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raise NodeError("NAT interface {} is not allowed be used on this server. "
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"Please check the server configuration file.".format(nat_interface))
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interfaces = list(filter(lambda x: nat_interface in x.lower(),
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[interface["name"] for interface in gns3server.utils.interfaces.interfaces()]))
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if not len(interfaces):
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raise NodeError("NAT interface {} is missing. You need to install VMware or use the NAT node on GNS3 VM".format(nat_interface))
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interface = interfaces[0] # take the first available interface containing the vmnet8 name
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log.info("NAT node '{}' configured to use NAT interface '{}'".format(name, interface))
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ports = [
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{
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"name": "nat0",
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"type": "ethernet",
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"interface": interface,
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"port_number": 0
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}
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]
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super().__init__(name, node_id, project, manager, ports=ports)
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@property
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def ports_mapping(self):
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return self._ports_mapping
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@ports_mapping.setter
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def ports_mapping(self, ports):
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# It's not allowed to change it
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pass
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@classmethod
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def is_supported(self):
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return True
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def __json__(self):
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return {
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"name": self.name,
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"node_id": self.id,
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"project_id": self.project.id,
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"status": "started",
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"ports_mapping": self.ports_mapping
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}
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