mirror of
https://github.com/GNS3/gns3-server.git
synced 2024-11-18 01:34:50 +02:00
215 lines
6.7 KiB
Python
215 lines
6.7 KiB
Python
#
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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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"""
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API routes for links.
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"""
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import multidict
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import aiohttp
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from fastapi import APIRouter, Depends, Request, Response, status
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from fastapi.responses import StreamingResponse
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from fastapi.encoders import jsonable_encoder
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from typing import List
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from uuid import UUID
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from gns3server.controller import Controller
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from gns3server.controller.controller_error import ControllerError
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from gns3server.controller.link import Link
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from gns3server.utils.http_client import HTTPClient
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from gns3server import schemas
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import logging
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log = logging.getLogger(__name__)
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responses = {404: {"model": schemas.ErrorMessage, "description": "Could not find project or link"}}
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router = APIRouter(responses=responses)
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async def dep_link(project_id: UUID, link_id: UUID) -> Link:
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"""
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Dependency to retrieve a link.
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"""
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project = await Controller.instance().get_loaded_project(str(project_id))
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link = project.get_link(str(link_id))
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return link
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@router.get("", response_model=List[schemas.Link], response_model_exclude_unset=True)
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async def get_links(project_id: UUID) -> List[schemas.Link]:
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"""
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Return all links for a given project.
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"""
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project = await Controller.instance().get_loaded_project(str(project_id))
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return [v.asdict() for v in project.links.values()]
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@router.post(
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"",
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status_code=status.HTTP_201_CREATED,
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response_model=schemas.Link,
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responses={
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404: {"model": schemas.ErrorMessage, "description": "Could not find project"},
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409: {"model": schemas.ErrorMessage, "description": "Could not create link"},
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},
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)
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async def create_link(project_id: UUID, link_data: schemas.LinkCreate) -> schemas.Link:
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"""
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Create a new link.
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"""
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project = await Controller.instance().get_loaded_project(str(project_id))
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link = await project.add_link()
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link_data = jsonable_encoder(link_data, exclude_unset=True)
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if "filters" in link_data:
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await link.update_filters(link_data["filters"])
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if "link_style" in link_data:
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await link.update_link_style(link_data["link_style"])
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if "suspend" in link_data:
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await link.update_suspend(link_data["suspend"])
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try:
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for node in link_data["nodes"]:
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await link.add_node(
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project.get_node(node["node_id"]),
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node.get("adapter_number", 0),
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node.get("port_number", 0),
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label=node.get("label"),
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)
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except ControllerError as e:
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await project.delete_link(link.id)
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raise e
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return link.asdict()
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@router.get("/{link_id}/available_filters")
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async def get_filters(link: Link = Depends(dep_link)) -> List[dict]:
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"""
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Return all filters available for a given link.
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"""
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return link.available_filters()
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@router.get("/{link_id}", response_model=schemas.Link, response_model_exclude_unset=True)
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async def get_link(link: Link = Depends(dep_link)) -> schemas.Link:
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"""
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Return a link.
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"""
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return link.asdict()
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@router.put("/{link_id}", response_model=schemas.Link, response_model_exclude_unset=True)
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async def update_link(link_data: schemas.LinkUpdate, link: Link = Depends(dep_link)) -> schemas.Link:
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"""
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Update a link.
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"""
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link_data = jsonable_encoder(link_data, exclude_unset=True)
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if "filters" in link_data:
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await link.update_filters(link_data["filters"])
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if "link_style" in link_data:
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await link.update_link_style(link_data["link_style"])
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if "suspend" in link_data:
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await link.update_suspend(link_data["suspend"])
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if "nodes" in link_data:
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await link.update_nodes(link_data["nodes"])
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return link.asdict()
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@router.delete("/{link_id}", status_code=status.HTTP_204_NO_CONTENT)
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async def delete_link(project_id: UUID, link: Link = Depends(dep_link)) -> None:
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"""
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Delete a link.
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"""
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project = await Controller.instance().get_loaded_project(str(project_id))
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await project.delete_link(link.id)
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@router.post("/{link_id}/reset", response_model=schemas.Link)
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async def reset_link(link: Link = Depends(dep_link)) -> schemas.Link:
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"""
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Reset a link.
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"""
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await link.reset()
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return link.asdict()
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@router.post("/{link_id}/capture/start", status_code=status.HTTP_201_CREATED, response_model=schemas.Link)
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async def start_capture(capture_data: dict, link: Link = Depends(dep_link)) -> schemas.Link:
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"""
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Start packet capture on the link.
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"""
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await link.start_capture(
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data_link_type=capture_data.get("data_link_type", "DLT_EN10MB"),
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capture_file_name=capture_data.get("capture_file_name"),
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)
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return link.asdict()
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@router.post("/{link_id}/capture/stop", status_code=status.HTTP_204_NO_CONTENT)
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async def stop_capture(link: Link = Depends(dep_link)) -> None:
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"""
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Stop packet capture on the link.
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"""
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await link.stop_capture()
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@router.get("/{link_id}/capture/stream")
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async def stream_pcap(request: Request, link: Link = Depends(dep_link)) -> StreamingResponse:
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"""
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Stream the PCAP capture file from compute.
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"""
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if not link.capturing:
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raise ControllerError("This link has no active packet capture")
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compute = link.compute
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pcap_streaming_url = link.pcap_streaming_url()
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headers = multidict.MultiDict(request.headers)
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headers["Host"] = compute.host
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headers["Router-Host"] = request.client.host
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body = await request.body()
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async def compute_pcap_stream():
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try:
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async with HTTPClient.request(
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request.method,
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pcap_streaming_url,
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user=compute.user,
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password=compute.password,
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timeout=None,
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data=body
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) as response:
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async for data in response.content.iter_any():
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if not data:
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break
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yield data
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except aiohttp.ClientError as e:
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raise ControllerError(f"Client error received when receiving pcap stream from compute: {e}")
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return StreamingResponse(compute_pcap_stream(), media_type="application/vnd.tcpdump.pcap")
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