mirror of
https://github.com/GNS3/gns3-server
synced 2024-12-27 01:08:33 +00:00
640 lines
21 KiB
Python
640 lines
21 KiB
Python
# -*- coding: utf-8 -*-
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#
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# Copyright (C) 2015 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 os
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import aiohttp
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import shutil
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import asyncio
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import hashlib
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import zipstream
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import zipfile
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import json
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from uuid import UUID
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from .port_manager import PortManager
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from .notification_manager import NotificationManager
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from ..config import Config
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from ..utils.asyncio import wait_run_in_executor
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from ..utils.path import check_path_allowed, get_default_project_directory
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import logging
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log = logging.getLogger(__name__)
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class Project:
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"""
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A project contains a list of nodes.
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In theory nodes are isolated project/project.
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:param project_id: force project identifier (None by default auto generate an UUID)
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:param path: path of the project. (None use the standard directory)
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:param temporary: boolean to tell if the project is a temporary project (destroy when closed)
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"""
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def __init__(self, name=None, project_id=None, path=None, temporary=False):
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self._name = name
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try:
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UUID(project_id, version=4)
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except ValueError:
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raise aiohttp.web.HTTPBadRequest(text="{} is not a valid UUID".format(project_id))
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self._id = project_id
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self._nodes = set()
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self._nodes_to_destroy = set()
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self.temporary = temporary
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self._used_tcp_ports = set()
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self._used_udp_ports = set()
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if path is None:
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location = get_default_project_directory()
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path = os.path.join(location, self._id)
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try:
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os.makedirs(path, exist_ok=True)
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except OSError as e:
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raise aiohttp.web.HTTPInternalServerError(text="Could not create project directory: {}".format(e))
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self.path = path
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try:
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if os.path.exists(self.tmp_working_directory()):
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shutil.rmtree(self.tmp_working_directory())
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except OSError:
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raise aiohttp.web.HTTPInternalServerError(text="Could not clean project directory: {}".format(e))
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log.info("Project {id} with path '{path}' created".format(path=self._path, id=self._id))
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def __json__(self):
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return {
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"name": self._name,
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"project_id": self._id,
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"temporary": self._temporary
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}
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def _config(self):
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return Config.instance().get_section_config("Server")
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def is_local(self):
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return self._config().getboolean("local", False)
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@property
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def id(self):
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return self._id
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@property
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def path(self):
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return self._path
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@path.setter
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def path(self, path):
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check_path_allowed(path)
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if hasattr(self, "_path"):
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if path != self._path and self.is_local() is False:
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raise aiohttp.web.HTTPForbidden(text="You are not allowed to modify the project directory path")
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self._path = path
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self._update_temporary_file()
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@asyncio.coroutine
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def clean_old_path(self, old_path):
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"""
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Called after a project location change. All the compute should
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have been notified before
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"""
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if self._temporary:
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try:
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yield from wait_run_in_executor(shutil.rmtree, old_path)
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except OSError as e:
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log.warn("Can't remove temporary directory {}: {}".format(old_path, e))
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@property
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def name(self):
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return self._name
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@name.setter
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def name(self, name):
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if "/" in name or "\\" in name:
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raise aiohttp.web.HTTPForbidden(text="Name can not contain path separator")
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self._name = name
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@property
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def nodes(self):
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return self._nodes
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@property
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def temporary(self):
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return self._temporary
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@temporary.setter
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def temporary(self, temporary):
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if hasattr(self, 'temporary') and temporary == self._temporary:
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return
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self._temporary = temporary
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self._update_temporary_file()
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def record_tcp_port(self, port):
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"""
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Associate a reserved TCP port number with this project.
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:param port: TCP port number
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"""
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if port not in self._used_tcp_ports:
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self._used_tcp_ports.add(port)
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def record_udp_port(self, port):
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"""
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Associate a reserved UDP port number with this project.
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:param port: UDP port number
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"""
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if port not in self._used_udp_ports:
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self._used_udp_ports.add(port)
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def remove_tcp_port(self, port):
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"""
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Removes an associated TCP port number from this project.
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:param port: TCP port number
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"""
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if port in self._used_tcp_ports:
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self._used_tcp_ports.remove(port)
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def remove_udp_port(self, port):
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"""
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Removes an associated UDP port number from this project.
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:param port: UDP port number
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"""
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if port in self._used_udp_ports:
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self._used_udp_ports.remove(port)
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def _update_temporary_file(self):
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"""
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Update the .gns3_temporary file in order to reflect the current project status.
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"""
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if not hasattr(self, "_path"):
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return
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if self._temporary:
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try:
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with open(os.path.join(self._path, ".gns3_temporary"), 'w+') as f:
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f.write("1")
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except OSError as e:
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raise aiohttp.web.HTTPInternalServerError(text="Could not create temporary project: {}".format(e))
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else:
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if os.path.exists(os.path.join(self._path, ".gns3_temporary")):
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try:
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os.remove(os.path.join(self._path, ".gns3_temporary"))
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except OSError as e:
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raise aiohttp.web.HTTPInternalServerError(text="Could not mark project as no longer temporary: {}".format(e))
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def module_working_directory(self, module_name):
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"""
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Returns a working directory for the module
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The directory is created if the directory doesn't exist.
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:param module_name: name for the module
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:returns: working directory
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"""
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workdir = self.module_working_path(module_name)
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try:
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os.makedirs(workdir, exist_ok=True)
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except OSError as e:
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raise aiohttp.web.HTTPInternalServerError(text="Could not create module working directory: {}".format(e))
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return workdir
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def module_working_path(self, module_name):
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"""
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Returns the working directory for the module. If you want
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to be sure to have the directory on disk take a look on:
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module_working_directory
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"""
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return os.path.join(self._path, "project-files", module_name)
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def node_working_directory(self, node):
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"""
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Returns a working directory for a specific node.
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If the directory doesn't exist, the directory is created.
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:param node: Node instance
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:returns: Node working directory
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"""
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workdir = os.path.join(self._path, "project-files", node.manager.module_name.lower(), node.id)
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try:
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os.makedirs(workdir, exist_ok=True)
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except OSError as e:
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raise aiohttp.web.HTTPInternalServerError(text="Could not create the node working directory: {}".format(e))
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return workdir
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def tmp_working_directory(self):
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"""
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A temporary directory. Will be clean at project open and close
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"""
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return os.path.join(self._path, "tmp")
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def capture_working_directory(self):
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"""
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Returns a working directory where to temporary store packet capture files.
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:returns: path to the directory
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"""
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workdir = os.path.join(self._path, "tmp", "captures")
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try:
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os.makedirs(workdir, exist_ok=True)
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except OSError as e:
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raise aiohttp.web.HTTPInternalServerError(text="Could not create the capture working directory: {}".format(e))
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return workdir
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def mark_node_for_destruction(self, node):
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"""
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:param node: An instance of Node
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"""
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self.remove_node(node)
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self._nodes_to_destroy.add(node)
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def add_node(self, node):
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"""
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Adds a node to the project.
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In theory this should be called by the node manager.
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:param node: Node instance
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"""
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self._nodes.add(node)
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def remove_node(self, node):
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"""
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Removes a node from the project.
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In theory this should be called by the node manager.
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:param node: Node instance
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"""
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if node in self._nodes:
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self._nodes.remove(node)
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@asyncio.coroutine
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def close(self):
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"""
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Closes the project, but keep information on disk
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"""
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for module in self.compute():
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yield from module.instance().project_closing(self)
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yield from self._close_and_clean(self._temporary)
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for module in self.compute():
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yield from module.instance().project_closed(self)
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try:
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if os.path.exists(self.tmp_working_directory()):
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shutil.rmtree(self.tmp_working_directory())
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except OSError:
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pass
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@asyncio.coroutine
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def _close_and_clean(self, cleanup):
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"""
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Closes the project, and cleanup the disk if cleanup is True
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:param cleanup: Whether to delete the project directory
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"""
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tasks = []
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for node in self._nodes:
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tasks.append(asyncio.async(node.manager.close_node(node.id)))
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if tasks:
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done, _ = yield from asyncio.wait(tasks)
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for future in done:
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try:
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future.result()
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except (Exception, GeneratorExit) as e:
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log.error("Could not close node {}".format(e), exc_info=1)
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if cleanup and os.path.exists(self.path):
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try:
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yield from wait_run_in_executor(shutil.rmtree, self.path)
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log.info("Project {id} with path '{path}' deleted".format(path=self._path, id=self._id))
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except OSError as e:
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raise aiohttp.web.HTTPInternalServerError(text="Could not delete the project directory: {}".format(e))
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else:
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log.info("Project {id} with path '{path}' closed".format(path=self._path, id=self._id))
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if self._used_tcp_ports:
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log.warning("Project {} has TCP ports still in use: {}".format(self.id, self._used_tcp_ports))
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if self._used_udp_ports:
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log.warning("Project {} has UDP ports still in use: {}".format(self.id, self._used_udp_ports))
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# clean the remaining ports that have not been cleaned by their respective node.
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port_manager = PortManager.instance()
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for port in self._used_tcp_ports.copy():
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port_manager.release_tcp_port(port, self)
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for port in self._used_udp_ports.copy():
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port_manager.release_udp_port(port, self)
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@asyncio.coroutine
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def commit(self):
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"""
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Writes project changes on disk
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"""
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while self._nodes_to_destroy:
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node = self._nodes_to_destroy.pop()
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yield from node.delete()
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self.remove_node(node)
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for module in self.compute():
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yield from module.instance().project_committed(self)
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@asyncio.coroutine
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def delete(self):
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"""
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Removes project from disk
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"""
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for module in self.compute():
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yield from module.instance().project_closing(self)
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yield from self._close_and_clean(True)
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for module in self.compute():
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yield from module.instance().project_closed(self)
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@classmethod
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def clean_project_directory(cls):
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"""
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At startup drop old temporary project. After a crash for example
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"""
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directory = get_default_project_directory()
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if os.path.exists(directory):
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for project in os.listdir(directory):
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path = os.path.join(directory, project)
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if os.path.exists(os.path.join(path, ".gns3_temporary")):
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log.warning("Purge old temporary project {}".format(project))
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shutil.rmtree(path)
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def compute(self):
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"""
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Returns all loaded modules from compute.
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"""
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# We import it at the last time to avoid circular dependencies
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from ..compute import MODULES
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return MODULES
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def emit(self, action, event):
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"""
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Send an event to all the client listening for notifications
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:param action: Action name
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:param event: Event to send
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"""
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NotificationManager.instance().emit(action, event, project_id=self.id)
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@asyncio.coroutine
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def list_files(self):
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"""
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:returns: Array of files in project without temporary files. The files are dictionary {"path": "test.bin", "md5sum": "aaaaa"}
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"""
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files = []
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for (dirpath, dirnames, filenames) in os.walk(self.path):
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for filename in filenames:
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if not filename.endswith(".ghost"):
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path = os.path.relpath(dirpath, self.path)
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path = os.path.join(path, filename)
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path = os.path.normpath(path)
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file_info = {"path": path}
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try:
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file_info["md5sum"] = yield from wait_run_in_executor(self._hash_file, os.path.join(dirpath, filename))
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except OSError:
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continue
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files.append(file_info)
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return files
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def _hash_file(self, path):
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"""
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Compute and md5 hash for file
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:returns: hexadecimal md5
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"""
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m = hashlib.md5()
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with open(path, "rb") as f:
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while True:
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buf = f.read(128)
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if not buf:
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break
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m.update(buf)
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return m.hexdigest()
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def export(self, include_images=False):
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"""
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Export the project as zip. It's a ZipStream object.
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The file will be read chunk by chunk when you iterate on
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the zip.
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It will ignore some files like snapshots and
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:returns: ZipStream object
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"""
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z = zipstream.ZipFile()
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# topdown allows to modify the list of directory in order to ignore the directory
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for root, dirs, files in os.walk(self._path, topdown=True):
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# Remove snapshots and capture
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if os.path.split(root)[-1:][0] == "project-files":
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dirs[:] = [d for d in dirs if d not in ("snapshots", "tmp")]
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# Ignore log files and OS noise
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files = [f for f in files if not f.endswith('_log.txt') and not f.endswith('.log') and f != '.DS_Store']
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for file in files:
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path = os.path.join(root, file)
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# We rename the .gns3 project.gns3 to avoid the task to the client to guess the file name
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if file.endswith(".gns3"):
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self._export_project_file(path, z, include_images)
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else:
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# We merge the data from all server in the same project-files directory
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node_directory = os.path.join(self._path, "servers", "vm")
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if os.path.commonprefix([root, node_directory]) == node_directory:
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z.write(path, os.path.relpath(path, node_directory))
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else:
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z.write(path, os.path.relpath(path, self._path))
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return z
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def _export_images(self, image, type, z):
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"""
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Take a project file (.gns3) and export images to the zip
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:param image: Image path
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:param type: Type of image
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:param z: Zipfile instance for the export
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"""
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from . import MODULES
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for module in MODULES:
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try:
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img_directory = module.instance().get_images_directory()
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except NotImplementedError:
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# Some modules don't have images
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continue
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directory = os.path.split(img_directory)[-1:][0]
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if os.path.exists(image):
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path = image
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else:
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path = os.path.join(img_directory, image)
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if os.path.exists(path):
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arcname = os.path.join("images", directory, os.path.basename(image))
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z.write(path, arcname)
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break
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def _export_project_file(self, path, z, include_images):
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"""
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Take a project file (.gns3) and patch it for the export
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:param path: Path of the .gns3
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"""
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with open(path) as f:
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topology = json.load(f)
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if "topology" in topology and "nodes" in topology["topology"]:
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for node in topology["topology"]["nodes"]:
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if "properties" in node and node["type"] != "DockerVM":
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for prop, value in node["properties"].items():
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if prop.endswith("image"):
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node["properties"][prop] = os.path.basename(value)
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if include_images is True:
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self._export_images(value, node["type"], z)
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z.writestr("project.gns3", json.dumps(topology).encode())
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|
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def import_zip(self, stream, gns3vm=True):
|
||
"""
|
||
Import a project contain in a zip file
|
||
|
||
:param stream: A io.BytesIO of the zipfile
|
||
:param gns3vm: True move Docker, IOU and Qemu to the GNS3 VM
|
||
"""
|
||
|
||
with zipfile.ZipFile(stream) as myzip:
|
||
myzip.extractall(self.path)
|
||
|
||
project_file = os.path.join(self.path, "project.gns3")
|
||
if os.path.exists(project_file):
|
||
with open(project_file) as f:
|
||
topology = json.load(f)
|
||
topology["project_id"] = self.id
|
||
topology["name"] = self.name
|
||
topology.setdefault("topology", {})
|
||
topology["topology"].setdefault("nodes", [])
|
||
topology["topology"]["servers"] = [
|
||
{
|
||
"id": 1,
|
||
"local": True,
|
||
"vm": False
|
||
}
|
||
]
|
||
|
||
# By default all node run on local server
|
||
for node in topology["topology"]["nodes"]:
|
||
node["server_id"] = 1
|
||
|
||
if gns3vm:
|
||
# Move to servers/vm directory the data that should be import on remote server
|
||
modules_to_vm = {
|
||
"qemu": "QemuVM",
|
||
"iou": "IOUDevice",
|
||
"docker": "DockerVM"
|
||
}
|
||
|
||
node_directory = os.path.join(self.path, "servers", "vm", "project-files")
|
||
vm_server_use = False
|
||
|
||
for module, vm_type in modules_to_vm.items():
|
||
module_directory = os.path.join(self.path, "project-files", module)
|
||
if os.path.exists(module_directory):
|
||
os.makedirs(node_directory, exist_ok=True)
|
||
shutil.move(module_directory, os.path.join(node_directory, module))
|
||
|
||
# Patch node to use the GNS3 VM
|
||
for node in topology["topology"]["nodes"]:
|
||
if node["type"] == vm_type:
|
||
node["server_id"] = 2
|
||
vm_server_use = True
|
||
|
||
# We use the GNS3 VM. We need to add the server to the list
|
||
if vm_server_use:
|
||
topology["topology"]["servers"].append({
|
||
"id": 2,
|
||
"vm": True,
|
||
"local": False
|
||
})
|
||
|
||
# Write the modified topology
|
||
with open(project_file, "w") as f:
|
||
json.dump(topology, f, indent=4)
|
||
|
||
# Rename to a human distinctive name
|
||
shutil.move(project_file, os.path.join(self.path, self.name + ".gns3"))
|
||
if os.path.exists(os.path.join(self.path, "images")):
|
||
self._import_images()
|
||
|
||
def _import_images(self):
|
||
"""
|
||
Copy images to the images directory or delete them if they
|
||
already exists.
|
||
"""
|
||
image_dir = self._config().get("images_path")
|
||
|
||
root = os.path.join(self.path, "images")
|
||
for (dirpath, dirnames, filenames) in os.walk(root):
|
||
for filename in filenames:
|
||
path = os.path.join(dirpath, filename)
|
||
dst = os.path.join(image_dir, os.path.relpath(path, root))
|
||
os.makedirs(os.path.dirname(dst), exist_ok=True)
|
||
shutil.move(path, dst)
|
||
|
||
# Cleanup the project
|
||
shutil.rmtree(root, ignore_errors=True)
|