# -*- coding: utf-8 -*-
#
# Copyright (C) 2020 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/>.
"""
API routes for NAT nodes.
"""
import os
from fastapi import APIRouter, Depends, status
from fastapi.encoders import jsonable_encoder
from fastapi.responses import StreamingResponse
from typing import Union
from uuid import UUID
from gns3server import schemas
from gns3server.compute.builtin import Builtin
from gns3server.compute.builtin.nodes.nat import Nat
router = APIRouter()
responses = {
404: {"model": schemas.ErrorMessage, "description": "Could not find project or NAT node"}
}
def dep_node(project_id: UUID, node_id: UUID):
"""
Dependency to retrieve a node.
"""
builtin_manager = Builtin.instance()
node = builtin_manager.get_node(str(node_id), project_id=str(project_id))
return node
@router.post("",
response_model=schemas.NAT,
status_code=status.HTTP_201_CREATED,
responses={409: {"model": schemas.ErrorMessage, "description": "Could not create NAT node"}})
async def create_nat_node(project_id: UUID, node_data: schemas.NATCreate):
"""
Create a new NAT node.
"""
builtin_manager = Builtin.instance()
node_data = jsonable_encoder(node_data, exclude_unset=True)
node = await builtin_manager.create_node(node_data.pop("name"),
str(project_id),
node_data.get("node_id"),
node_type="nat",
ports=node_data.get("ports_mapping"))
node.usage = node_data.get("usage", "")
return node.__json__()
@router.get("/{node_id}",
response_model=schemas.NAT,
responses=responses)
def get_nat_node(node: Nat = Depends(dep_node)):
"""
Return a NAT node.
"""
return node.__json__()
@router.put("/{node_id}",
response_model=schemas.NAT,
responses=responses)
def update_nat_node(node_data: schemas.NATUpdate, node: Nat = Depends(dep_node)):
"""
Update a NAT node.
"""
node_data = jsonable_encoder(node_data, exclude_unset=True)
for name, value in node_data.items():
if hasattr(node, name) and getattr(node, name) != value:
setattr(node, name, value)
node.updated()
return node.__json__()
@router.delete("/{node_id}",
status_code=status.HTTP_204_NO_CONTENT,
responses=responses)
async def delete_nat_node(node: Nat = Depends(dep_node)):
"""
Delete a cloud node.
"""
await Builtin.instance().delete_node(node.id)
@router.post("/{node_id}/start",
status_code=status.HTTP_204_NO_CONTENT,
responses=responses)
async def start_nat_node(node: Nat = Depends(dep_node)):
"""
Start a NAT node.
"""
await node.start()
@router.post("/{node_id}/stop",
status_code=status.HTTP_204_NO_CONTENT,
responses=responses)
async def stop_nat_node(node: Nat = Depends(dep_node)):
"""
Stop a NAT node.
This endpoint results in no action since cloud nodes cannot be stopped.
"""
pass
@router.post("/{node_id}/suspend",
status_code=status.HTTP_204_NO_CONTENT,
responses=responses)
async def suspend_nat_node(node: Nat = Depends(dep_node)):
"""
Suspend a NAT node.
This endpoint results in no action since NAT nodes cannot be suspended.
"""
pass
@router.post("/{node_id}/adapters/{adapter_number}/ports/{port_number}/nio",
status_code=status.HTTP_201_CREATED,
response_model=Union[schemas.EthernetNIO, schemas.TAPNIO, schemas.UDPNIO],
responses=responses)
async def create_nat_node_nio(adapter_number: int,
port_number: int,
nio_data: Union[schemas.EthernetNIO, schemas.TAPNIO, schemas.UDPNIO],
node: Nat = Depends(dep_node)):
"""
Add a NIO (Network Input/Output) to the node.
The adapter number on the cloud is always 0.
"""
nio = Builtin.instance().create_nio(jsonable_encoder(nio_data, exclude_unset=True))
await node.add_nio(nio, port_number)
return nio.__json__()
@router.put("/{node_id}/adapters/{adapter_number}/ports/{port_number}/nio",
status_code=status.HTTP_201_CREATED,
response_model=Union[schemas.EthernetNIO, schemas.TAPNIO, schemas.UDPNIO],
responses=responses)
async def update_nat_node_nio(adapter_number: int,
port_number: int,
nio_data: Union[schemas.EthernetNIO, schemas.TAPNIO, schemas.UDPNIO],
node: Nat = Depends(dep_node)):
"""
Update a NIO (Network Input/Output) to the node.
The adapter number on the cloud is always 0.
"""
nio = node.get_nio(port_number)
if nio_data.filters:
nio.filters = nio_data.filters
await node.update_nio(port_number, nio)
return nio.__json__()
@router.delete("/{node_id}/adapters/{adapter_number}/ports/{port_number}/nio",
status_code=status.HTTP_204_NO_CONTENT,
responses=responses)
async def delete_nat_node_nio(adapter_number: int, port_number: int, node: Nat = Depends(dep_node)):
"""
Remove a NIO (Network Input/Output) from the node.
The adapter number on the cloud is always 0.
"""
await node.remove_nio(port_number)
@router.post("/{node_id}/adapters/{adapter_number}/ports/{port_number}/capture/start",
responses=responses)
async def start_nat_node_capture(adapter_number: int,
port_number: int,
node_capture_data: schemas.NodeCapture,
node: Nat = Depends(dep_node)):
"""
Start a packet capture on the node.
The adapter number on the cloud is always 0.
"""
pcap_file_path = os.path.join(node.project.capture_working_directory(), node_capture_data.capture_file_name)
await node.start_capture(port_number, pcap_file_path, node_capture_data.data_link_type)
return {"pcap_file_path": pcap_file_path}
@router.post("/{node_id}/adapters/{adapter_number}/ports/{port_number}/capture/stop",
status_code=status.HTTP_204_NO_CONTENT,
responses=responses)
async def stop_nat_node_capture(adapter_number: int, port_number: int, node: Nat = Depends(dep_node)):
"""
Stop a packet capture on the node.
The adapter number on the cloud is always 0.
"""
await node.stop_capture(port_number)
@router.get("/{node_id}/adapters/{adapter_number}/ports/{port_number}/capture/stream",
responses=responses)
async def stream_pcap_file(adapter_number: int, port_number: int, node: Nat = Depends(dep_node)):
"""
Stream the pcap capture file.
The adapter number on the cloud is always 0.
"""
nio = node.get_nio(port_number)
stream = Builtin.instance().stream_pcap_file(nio, node.project.id)
return StreamingResponse(stream, media_type="application/vnd.tcpdump.pcap")