mirror of
https://github.com/GNS3/gns3-server
synced 2024-11-24 09:18:08 +00:00
299 lines
12 KiB
Python
299 lines
12 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 os
|
|
import sys
|
|
import json
|
|
import asyncio
|
|
import aiofiles
|
|
import aiohttp
|
|
import zipfile
|
|
import tempfile
|
|
|
|
from datetime import datetime
|
|
|
|
import logging
|
|
log = logging.getLogger(__name__)
|
|
|
|
CHUNK_SIZE = 1024 * 8 # 8KB
|
|
|
|
|
|
async def export_project(zstream, project, temporary_dir, include_images=False, include_snapshots=False, keep_compute_id=False, allow_all_nodes=False, reset_mac_addresses=False):
|
|
"""
|
|
Export a project to a zip file.
|
|
|
|
The file will be read chunk by chunk when you iterate over the zip stream.
|
|
Some files like snapshots and packet captures are ignored.
|
|
|
|
:param zstream: ZipStream object
|
|
:param project: Project instance
|
|
:param temporary_dir: A temporary dir where to store intermediate data
|
|
:param include_images: save OS images to the zip file
|
|
:param include_snapshots: save snapshots to the zip file
|
|
:param keep_compute_id: If false replace all compute id by local (standard behavior for .gns3project to make it portable)
|
|
:param allow_all_nodes: Allow all nodes type to be include in the zip even if not portable
|
|
:param reset_mac_addresses: Reset MAC addresses for every nodes.
|
|
"""
|
|
|
|
# To avoid issue with data not saved we disallow the export of a running project
|
|
if project.is_running():
|
|
raise aiohttp.web.HTTPConflict(text="Project must be stopped in order to export it")
|
|
|
|
# Make sure we save the project
|
|
project.dump()
|
|
|
|
if not os.path.exists(project._path):
|
|
raise aiohttp.web.HTTPNotFound(text="Project could not be found at '{}'".format(project._path))
|
|
|
|
# First we process the .gns3 in order to be sure we don't have an error
|
|
for file in os.listdir(project._path):
|
|
if file.endswith(".gns3"):
|
|
await _patch_project_file(project, os.path.join(project._path, file), zstream, include_images, keep_compute_id, allow_all_nodes, temporary_dir, reset_mac_addresses)
|
|
|
|
# Export the local files
|
|
for root, dirs, files in os.walk(project._path, topdown=True, followlinks=False):
|
|
try:
|
|
files = [f for f in files if _is_exportable(os.path.join(root, f), include_snapshots)]
|
|
for file in files:
|
|
path = os.path.join(root, file)
|
|
# check if we can export the file
|
|
try:
|
|
open(path).close()
|
|
except OSError as e:
|
|
msg = "Could not export file {}: {}".format(path, e)
|
|
log.warning(msg)
|
|
project.emit_notification("log.warning", {"message": msg})
|
|
continue
|
|
# ignore the .gns3 file
|
|
if file.endswith(".gns3"):
|
|
continue
|
|
_patch_mtime(path)
|
|
zstream.write(path, os.path.relpath(path, project._path))
|
|
except FileNotFoundError as e:
|
|
log.warning("Cannot export local file: {}".format(e))
|
|
continue
|
|
|
|
# Export files from remote computes
|
|
for compute in project.computes:
|
|
if compute.id != "local":
|
|
compute_files = await compute.list_files(project)
|
|
for compute_file in compute_files:
|
|
if _is_exportable(compute_file["path"], include_snapshots):
|
|
log.debug("Downloading file '{}' from compute '{}'".format(compute_file["path"], compute.id))
|
|
response = await compute.download_file(project, compute_file["path"])
|
|
if response.status != 200:
|
|
log.warning("Cannot export file from compute '{}'. Compute returned status code {}.".format(compute.id, response.status))
|
|
continue
|
|
(fd, temp_path) = tempfile.mkstemp(dir=temporary_dir)
|
|
async with aiofiles.open(fd, 'wb') as f:
|
|
while True:
|
|
try:
|
|
data = await response.content.read(CHUNK_SIZE)
|
|
except asyncio.TimeoutError:
|
|
raise aiohttp.web.HTTPRequestTimeout(text="Timeout when downloading file '{}' from remote compute {}:{}".format(compute_file["path"], compute.host, compute.port))
|
|
if not data:
|
|
break
|
|
await f.write(data)
|
|
response.close()
|
|
_patch_mtime(temp_path)
|
|
zstream.write(temp_path, arcname=compute_file["path"])
|
|
|
|
|
|
def _patch_mtime(path):
|
|
"""
|
|
Patch the file mtime because ZIP does not support timestamps before 1980
|
|
|
|
:param path: file path
|
|
"""
|
|
|
|
if sys.platform.startswith("win"):
|
|
# only UNIX type platforms
|
|
return
|
|
st = os.stat(path)
|
|
file_date = datetime.fromtimestamp(st.st_mtime)
|
|
if file_date.year < 1980:
|
|
new_mtime = file_date.replace(year=1980).timestamp()
|
|
os.utime(path, (st.st_atime, new_mtime))
|
|
|
|
|
|
def _is_exportable(path, include_snapshots=False):
|
|
"""
|
|
:returns: True if file should not be included in the final archive
|
|
"""
|
|
|
|
# do not export snapshots by default
|
|
if include_snapshots is False and path.endswith("snapshots"):
|
|
return False
|
|
|
|
# do not export symlinks
|
|
if os.path.islink(path):
|
|
return False
|
|
|
|
# do not export directories of snapshots
|
|
if include_snapshots is False and "{sep}snapshots{sep}".format(sep=os.path.sep) in path:
|
|
return False
|
|
|
|
try:
|
|
# do not export captures and other temporary directory
|
|
s = os.path.normpath(path).split(os.path.sep)
|
|
i = s.index("project-files")
|
|
if include_snapshots is False and s[i + 1] == "snapshots":
|
|
return False
|
|
if s[i + 1] in ("tmp", "captures"):
|
|
return False
|
|
except (ValueError, IndexError):
|
|
pass
|
|
|
|
# do not export log files and OS noise
|
|
filename = os.path.basename(path)
|
|
if filename.endswith('_log.txt') or filename.endswith('.log') or filename == '.DS_Store':
|
|
return False
|
|
return True
|
|
|
|
|
|
async def _patch_project_file(project, path, zstream, include_images, keep_compute_id, allow_all_nodes, temporary_dir, reset_mac_addresses):
|
|
"""
|
|
Patch a project file (.gns3) to export a project.
|
|
The .gns3 file is renamed to project.gns3
|
|
|
|
:param path: path of the .gns3 file
|
|
"""
|
|
|
|
# image files that we need to include in the exported archive
|
|
images = []
|
|
|
|
try:
|
|
with open(path) as f:
|
|
topology = json.load(f)
|
|
except (OSError, ValueError) as e:
|
|
raise aiohttp.web.HTTPConflict(text="Project file '{}' cannot be read: {}".format(path, e))
|
|
|
|
if "topology" in topology:
|
|
if "nodes" in topology["topology"]:
|
|
for node in topology["topology"]["nodes"]:
|
|
compute_id = node.get('compute_id', 'local')
|
|
|
|
if node["node_type"] == "virtualbox" and node.get("properties", {}).get("linked_clone"):
|
|
raise aiohttp.web.HTTPConflict(text="Projects with a linked {} clone node cannot not be exported. Please use Qemu instead.".format(node["node_type"]))
|
|
if not allow_all_nodes and node["node_type"] in ["virtualbox", "vmware"]:
|
|
raise aiohttp.web.HTTPConflict(text="Projects with a {} node cannot be exported".format(node["node_type"]))
|
|
|
|
if not keep_compute_id:
|
|
node["compute_id"] = "local" # To make project portable all node by default run on local
|
|
|
|
if "properties" in node and node["node_type"] != "docker":
|
|
for prop, value in node["properties"].items():
|
|
|
|
# reset the MAC address
|
|
if reset_mac_addresses and prop in ("mac_addr", "mac_address"):
|
|
node["properties"][prop] = None
|
|
|
|
if node["node_type"] == "iou":
|
|
if not prop == "path":
|
|
continue
|
|
elif not prop.endswith("image"):
|
|
continue
|
|
if value is None or value.strip() == '':
|
|
continue
|
|
|
|
if not keep_compute_id: # If we keep the original compute we can keep the image path
|
|
node["properties"][prop] = os.path.basename(value)
|
|
|
|
if include_images is True:
|
|
images.append({
|
|
'compute_id': compute_id,
|
|
'image': value,
|
|
'image_type': node['node_type']
|
|
})
|
|
|
|
if not keep_compute_id:
|
|
topology["topology"]["computes"] = [] # Strip compute information because could contain secret info like password
|
|
|
|
local_images = set([i['image'] for i in images if i['compute_id'] == 'local'])
|
|
|
|
for image in local_images:
|
|
_export_local_image(image, zstream)
|
|
|
|
remote_images = set([
|
|
(i['compute_id'], i['image_type'], i['image'])
|
|
for i in images if i['compute_id'] != 'local'])
|
|
|
|
for compute_id, image_type, image in remote_images:
|
|
await _export_remote_images(project, compute_id, image_type, image, zstream, temporary_dir)
|
|
|
|
zstream.writestr("project.gns3", json.dumps(topology).encode())
|
|
return images
|
|
|
|
|
|
def _export_local_image(image, zstream):
|
|
"""
|
|
Exports a local image to the zip file.
|
|
|
|
:param image: image path
|
|
:param zstream: Zipfile instance for the export
|
|
"""
|
|
|
|
from ..compute import MODULES
|
|
for module in MODULES:
|
|
try:
|
|
images_directory = module.instance().get_images_directory()
|
|
except NotImplementedError:
|
|
# Some modules don't have images
|
|
continue
|
|
|
|
directory = os.path.split(images_directory)[-1:][0]
|
|
if os.path.exists(image):
|
|
path = image
|
|
else:
|
|
path = os.path.join(images_directory, image)
|
|
|
|
if os.path.exists(path):
|
|
arcname = os.path.join("images", directory, os.path.basename(image))
|
|
_patch_mtime(path)
|
|
zstream.write(path, arcname)
|
|
return
|
|
|
|
|
|
async def _export_remote_images(project, compute_id, image_type, image, project_zipfile, temporary_dir):
|
|
"""
|
|
Export specific image from remote compute.
|
|
"""
|
|
|
|
log.debug("Downloading image '{}' from compute '{}'".format(image, compute_id))
|
|
try:
|
|
compute = [compute for compute in project.computes if compute.id == compute_id][0]
|
|
except IndexError:
|
|
raise aiohttp.web.HTTPConflict(text="Cannot export image from '{}' compute. Compute doesn't exist.".format(compute_id))
|
|
|
|
response = await compute.download_image(image_type, image)
|
|
if response.status != 200:
|
|
raise aiohttp.web.HTTPConflict(text="Cannot export image from compute '{}'. Compute returned status code {}.".format(compute_id, response.status))
|
|
|
|
(fd, temp_path) = tempfile.mkstemp(dir=temporary_dir)
|
|
async with aiofiles.open(fd, 'wb') as f:
|
|
while True:
|
|
try:
|
|
data = await response.content.read(CHUNK_SIZE)
|
|
except asyncio.TimeoutError:
|
|
raise aiohttp.web.HTTPRequestTimeout(text="Timeout when downloading image '{}' from remote compute {}:{}".format(image, compute.host, compute.port))
|
|
if not data:
|
|
break
|
|
await f.write(data)
|
|
response.close()
|
|
arcname = os.path.join("images", image_type, image)
|
|
project_zipfile.write(temp_path, arcname=arcname, compress_type=zipfile.ZIP_DEFLATED)
|