mirror of
https://github.com/GNS3/gns3-server
synced 2024-11-25 01:38:08 +00:00
1065 lines
43 KiB
Python
1065 lines
43 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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"""
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IOU VM management (creates command line, processes, files etc.) in
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order to run an IOU instance.
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"""
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import os
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import signal
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import socket
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import re
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import asyncio
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import subprocess
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import shutil
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import argparse
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import threading
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import configparser
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import struct
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import hashlib
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import glob
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from .iou_error import IOUError
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from ..adapters.ethernet_adapter import EthernetAdapter
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from ..adapters.serial_adapter import SerialAdapter
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from ..nios.nio_udp import NIOUDP
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from ..nios.nio_tap import NIOTAP
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from ..nios.nio_generic_ethernet import NIOGenericEthernet
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from ..base_vm import BaseVM
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from .ioucon import start_ioucon
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import gns3server.utils.asyncio
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import logging
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import sys
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log = logging.getLogger(__name__)
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class IOUVM(BaseVM):
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module_name = 'iou'
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"""
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IOU vm implementation.
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:param name: name of this IOU vm
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:param vm_id: IOU instance identifier
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:param project: Project instance
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:param manager: parent VM Manager
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:param console: TCP console port
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:params ethernet_adapters: Number of ethernet adapters
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:params serial_adapters: Number of serial adapters
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:params ram: Ram MB
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:params nvram: Nvram KB
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:params l1_keepalives: Always up ethernet interface:
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:params initial_config: Content of the initial configuration file
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:params iourc_content: Content of the iourc file if no licence is installed on server
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"""
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def __init__(self, name, vm_id, project, manager,
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console=None,
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ram=None,
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nvram=None,
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ethernet_adapters=None,
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serial_adapters=None,
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l1_keepalives=None,
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initial_config=None,
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iourc_content=None):
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super().__init__(name, vm_id, project, manager, console=console)
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self._command = []
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self._iouyap_process = None
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self._iou_process = None
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self._iou_stdout_file = ""
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self._started = False
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self._path = None
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self._ioucon_thread = None
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# IOU settings
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self._ethernet_adapters = []
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self._serial_adapters = []
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self.ethernet_adapters = 2 if ethernet_adapters is None else ethernet_adapters # one adapter = 4 interfaces
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self.serial_adapters = 2 if serial_adapters is None else serial_adapters # one adapter = 4 interfaces
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self._use_default_iou_values = True # for RAM & NVRAM values
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self._nvram = 128 if nvram is None else nvram # Kilobytes
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self._initial_config = ""
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self._ram = 256 if ram is None else ram # Megabytes
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self._l1_keepalives = False if l1_keepalives is None else l1_keepalives # used to overcome the always-up Ethernet interfaces (not supported by all IOSes).
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self.iourc_content = iourc_content
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if initial_config is not None:
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self.initial_config = initial_config
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@asyncio.coroutine
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def close(self):
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log.debug('IOU "{name}" [{id}] is closing'.format(name=self._name, id=self._id))
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if self._console:
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self._manager.port_manager.release_tcp_port(self._console, self._project)
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self._console = None
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adapters = self._ethernet_adapters + self._serial_adapters
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for adapter in adapters:
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if adapter is not None:
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for nio in adapter.ports.values():
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if nio and isinstance(nio, NIOUDP):
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self.manager.port_manager.release_udp_port(nio.lport, self._project)
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yield from self.stop()
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@property
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def path(self):
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"""Path of the iou binary"""
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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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"""
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Path of the iou binary
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:params path: Path to the binary
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"""
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if not os.path.isabs(path):
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server_config = self.manager.config.get_section_config("Server")
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relative_path = os.path.join(os.path.expanduser(server_config.get("images_path", "~/GNS3/images")), path)
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if not os.path.exists(relative_path):
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relative_path = os.path.join(os.path.expanduser(server_config.get("images_path", "~/GNS3/images")), "IOU", path)
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path = relative_path
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self._path = path
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if not os.path.isfile(self._path) or not os.path.exists(self._path):
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if os.path.islink(self._path):
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raise IOUError("IOU image '{}' linked to '{}' is not accessible".format(self._path, os.path.realpath(self._path)))
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else:
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raise IOUError("IOU image '{}' is not accessible".format(self._path))
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try:
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with open(self._path, "rb") as f:
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# read the first 7 bytes of the file.
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elf_header_start = f.read(7)
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except OSError as e:
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raise IOUError("Cannot read ELF header for IOU image '{}': {}".format(self._path, e))
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# IOU images must start with the ELF magic number, be 32-bit, little endian
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# and have an ELF version of 1 normal IOS image are big endian!
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if elf_header_start != b'\x7fELF\x01\x01\x01':
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raise IOUError("'{}' is not a valid IOU image".format(self._path))
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if not os.access(self._path, os.X_OK):
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raise IOUError("IOU image '{}' is not executable".format(self._path))
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@property
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def use_default_iou_values(self):
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"""
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Returns if this device uses the default IOU image values.
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:returns: boolean
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"""
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return self._use_default_iou_values
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@use_default_iou_values.setter
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def use_default_iou_values(self, state):
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"""
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Sets if this device uses the default IOU image values.
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:param state: boolean
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"""
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self._use_default_iou_values = state
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if state:
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log.info("IOU {name} [id={id}]: uses the default IOU image values".format(name=self._name, id=self._id))
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else:
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log.info("IOU {name} [id={id}]: does not use the default IOU image values".format(name=self._name, id=self._id))
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def _check_requirements(self):
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"""
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Check if IOUYAP is available
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"""
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path = self.iouyap_path
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if not path:
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raise IOUError("No path to a IOU executable has been set")
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if not os.path.isfile(path):
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raise IOUError("IOU program '{}' is not accessible".format(path))
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if not os.access(path, os.X_OK):
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raise IOUError("IOU program '{}' is not executable".format(path))
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def __json__(self):
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iou_vm_info = {"name": self.name,
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"vm_id": self.id,
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"console": self._console,
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"project_id": self.project.id,
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"path": self.path,
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"ethernet_adapters": len(self._ethernet_adapters),
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"serial_adapters": len(self._serial_adapters),
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"ram": self._ram,
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"nvram": self._nvram,
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"l1_keepalives": self._l1_keepalives,
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"initial_config": self.relative_initial_config_file,
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"use_default_iou_values": self._use_default_iou_values,
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"iourc_path": self.iourc_path}
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# return the relative path if the IOU image is in the images_path directory
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server_config = self.manager.config.get_section_config("Server")
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relative_image = os.path.join(os.path.expanduser(server_config.get("images_path", "~/GNS3/images")), "IOU", self.path)
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if os.path.exists(relative_image):
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iou_vm_info["path"] = os.path.basename(self.path)
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return iou_vm_info
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@property
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def iouyap_path(self):
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"""
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Returns the IOUYAP executable path.
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:returns: path to IOUYAP
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"""
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path = self._manager.config.get_section_config("IOU").get("iouyap_path", "iouyap")
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if path == "iouyap":
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path = shutil.which("iouyap")
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return path
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@property
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def iourc_path(self):
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"""
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Returns the IOURC path.
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:returns: path to IOURC
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"""
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iourc_path = self._manager.config.get_section_config("IOU").get("iourc_path")
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if not iourc_path:
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# look for the iourc file in the user home dir.
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path = os.path.join(os.path.expanduser("~/"), ".iourc")
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if os.path.exists(path):
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return path
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# look for the iourc file in the current working dir.
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path = os.path.join(self.working_dir, "iourc")
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if os.path.exists(path):
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return path
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# look for the iourc file in the temporary dir.
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path = os.path.join(self.temporary_directory, "iourc")
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if os.path.exists(path):
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return path
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return iourc_path
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@property
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def ram(self):
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"""
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Returns the amount of RAM allocated to this IOU instance.
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:returns: amount of RAM in Mbytes (integer)
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"""
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return self._ram
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@ram.setter
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def ram(self, ram):
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"""
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Sets amount of RAM allocated to this IOU instance.
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:param ram: amount of RAM in Mbytes (integer)
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"""
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if self._ram == ram:
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return
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log.info("IOU {name} [id={id}]: RAM updated from {old_ram}MB to {new_ram}MB".format(name=self._name,
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id=self._id,
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old_ram=self._ram,
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new_ram=ram))
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self._ram = ram
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@property
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def nvram(self):
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"""
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Returns the mount of NVRAM allocated to this IOU instance.
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:returns: amount of NVRAM in Kbytes (integer)
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"""
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return self._nvram
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@nvram.setter
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def nvram(self, nvram):
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"""
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Sets amount of NVRAM allocated to this IOU instance.
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:param nvram: amount of NVRAM in Kbytes (integer)
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"""
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if self._nvram == nvram:
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return
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log.info("IOU {name} [id={id}]: NVRAM updated from {old_nvram}KB to {new_nvram}KB".format(name=self._name,
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id=self._id,
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old_nvram=self._nvram,
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new_nvram=nvram))
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self._nvram = nvram
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@BaseVM.name.setter
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def name(self, new_name):
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"""
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Sets the name of this IOU vm.
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:param new_name: name
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"""
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if self.initial_config_file:
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content = self.initial_config
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content = content.replace(self._name, new_name)
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self.initial_config = content
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super(IOUVM, IOUVM).name.__set__(self, new_name)
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@property
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def application_id(self):
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return self._manager.get_application_id(self.id)
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@property
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def iourc_content(self):
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try:
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with open(os.path.join(self.temporary_directory, "iourc")) as f:
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return f.read()
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except OSError:
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return None
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@iourc_content.setter
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def iourc_content(self, value):
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if value is not None:
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path = os.path.join(self.temporary_directory, "iourc")
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try:
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with open(path, "w+") as f:
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f.write(value)
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except OSError as e:
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raise IOUError("Could not write iourc file {}: {}".format(path, e))
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@asyncio.coroutine
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def _library_check(self):
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"""
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Checks for missing shared library dependencies in the IOU image.
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"""
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try:
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output = yield from gns3server.utils.asyncio.subprocess_check_output("ldd", self._path)
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except (FileNotFoundError, subprocess.SubprocessError) as e:
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log.warn("Could not determine the shared library dependencies for {}: {}".format(self._path, e))
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return
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p = re.compile("([\.\w]+)\s=>\s+not found")
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missing_libs = p.findall(output)
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if missing_libs:
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raise IOUError("The following shared library dependencies cannot be found for IOU image {}: {}".format(self._path,
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", ".join(missing_libs)))
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@asyncio.coroutine
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def _check_iou_licence(self):
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"""
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Checks for a valid IOU key in the iourc file (paranoid mode).
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"""
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license_check = self._manager.config.get_section_config("IOU").getboolean("license_check", False)
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if license_check:
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return
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config = configparser.ConfigParser()
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if self.iourc_path is None:
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raise IOUError("Could not found iourc file")
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try:
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with open(self.iourc_path) as f:
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config.read_file(f)
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except OSError as e:
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raise IOUError("Could not open iourc file {}: {}".format(self.iourc_path, e))
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except configparser.Error as e:
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raise IOUError("Could not parse iourc file {}: {}".format(self.iourc_path, e))
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if "license" not in config:
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raise IOUError("License section not found in iourc file {}".format(self.iourc_path))
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hostname = socket.gethostname()
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if hostname not in config["license"]:
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raise IOUError("Hostname key not found in iourc file {}".format(self.iourc_path))
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user_ioukey = config["license"][hostname]
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if user_ioukey[-1:] != ';':
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raise IOUError("IOU key not ending with ; in iourc file".format(self.iourc_path))
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if len(user_ioukey) != 17:
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raise IOUError("IOU key length is not 16 characters in iourc file".format(self.iourc_path))
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user_ioukey = user_ioukey[:16]
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# We can't test this because it's mean distributing a valid licence key
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# in tests or generating one
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if not hasattr(sys, "_called_from_test"):
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try:
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hostid = (yield from gns3server.utils.asyncio.subprocess_check_output("hostid")).strip()
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except FileNotFoundError as e:
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raise IOUError("Could not find hostid: {}".format(e))
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except subprocess.SubprocessError as e:
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raise IOUError("Could not execute hostid: {}".format(e))
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try:
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ioukey = int(hostid, 16)
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except ValueError:
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raise IOUError("Invalid hostid detected: {}".format(hostid))
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for x in hostname:
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ioukey += ord(x)
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pad1 = b'\x4B\x58\x21\x81\x56\x7B\x0D\xF3\x21\x43\x9B\x7E\xAC\x1D\xE6\x8A'
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pad2 = b'\x80' + 39 * b'\0'
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ioukey = hashlib.md5(pad1 + pad2 + struct.pack('!I', ioukey) + pad1).hexdigest()[:16]
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if ioukey != user_ioukey:
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raise IOUError("Invalid IOU license key {} detected in iourc file {} for host {}".format(user_ioukey,
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self.iourc_path,
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hostname))
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@asyncio.coroutine
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def start(self):
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"""
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Starts the IOU process.
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"""
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self._check_requirements()
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if not self.is_running():
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yield from self._library_check()
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self._rename_nvram_file()
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iourc_path = self.iourc_path
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if iourc_path and not os.path.isfile(iourc_path):
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raise IOUError("A valid iourc file is necessary to start IOU")
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yield from self._check_iou_licence()
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iouyap_path = self.iouyap_path
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if not iouyap_path or not os.path.isfile(iouyap_path):
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raise IOUError("iouyap is necessary to start IOU")
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self._create_netmap_config()
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# created a environment variable pointing to the iourc file.
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env = os.environ.copy()
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if "IOURC" not in os.environ:
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env["IOURC"] = iourc_path
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self._command = yield from self._build_command()
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try:
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log.info("Starting IOU: {}".format(self._command))
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self._iou_stdout_file = os.path.join(self.working_dir, "iou.log")
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log.info("Logging to {}".format(self._iou_stdout_file))
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with open(self._iou_stdout_file, "w") as fd:
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self._iou_process = yield from asyncio.create_subprocess_exec(*self._command,
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stdout=fd,
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stderr=subprocess.STDOUT,
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cwd=self.working_dir,
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env=env)
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log.info("IOU instance {} started PID={}".format(self._id, self._iou_process.pid))
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self._started = True
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except FileNotFoundError as e:
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raise IOUError("could not start IOU: {}: 32-bit binary support is probably not installed".format(e))
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except (OSError, subprocess.SubprocessError) as e:
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iou_stdout = self.read_iou_stdout()
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log.error("could not start IOU {}: {}\n{}".format(self._path, e, iou_stdout))
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raise IOUError("could not start IOU {}: {}\n{}".format(self._path, e, iou_stdout))
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# start console support
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self._start_ioucon()
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# connections support
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yield from self._start_iouyap()
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def _rename_nvram_file(self):
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"""
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Before start the VM rename the nvram file to the correct application id
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"""
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destination = os.path.join(self.working_dir, "nvram_{:05d}".format(self.application_id))
|
|
for file_path in glob.glob(os.path.join(self.working_dir, "nvram_*")):
|
|
shutil.move(file_path, destination)
|
|
destination = os.path.join(self.working_dir, "vlan.dat-{:05d}".format(self.application_id))
|
|
for file_path in glob.glob(os.path.join(self.working_dir, "vlan.dat-*")):
|
|
shutil.move(file_path, destination)
|
|
|
|
@asyncio.coroutine
|
|
def _start_iouyap(self):
|
|
"""
|
|
Starts iouyap (handles connections to and from this IOU device).
|
|
"""
|
|
|
|
try:
|
|
self._update_iouyap_config()
|
|
command = [self.iouyap_path, "-q", str(self.application_id + 512)] # iouyap has always IOU ID + 512
|
|
log.info("starting iouyap: {}".format(command))
|
|
self._iouyap_stdout_file = os.path.join(self.working_dir, "iouyap.log")
|
|
log.info("logging to {}".format(self._iouyap_stdout_file))
|
|
with open(self._iouyap_stdout_file, "w") as fd:
|
|
self._iouyap_process = yield from asyncio.create_subprocess_exec(*command,
|
|
stdout=fd,
|
|
stderr=subprocess.STDOUT,
|
|
cwd=self.working_dir)
|
|
|
|
log.info("iouyap started PID={}".format(self._iouyap_process.pid))
|
|
except (OSError, subprocess.SubprocessError) as e:
|
|
iouyap_stdout = self.read_iouyap_stdout()
|
|
log.error("could not start iouyap: {}\n{}".format(e, iouyap_stdout))
|
|
raise IOUError("Could not start iouyap: {}\n{}".format(e, iouyap_stdout))
|
|
|
|
def _update_iouyap_config(self):
|
|
"""
|
|
Updates the iouyap.ini file.
|
|
"""
|
|
|
|
iouyap_ini = os.path.join(self.working_dir, "iouyap.ini")
|
|
|
|
config = configparser.ConfigParser()
|
|
config["default"] = {"netmap": "NETMAP",
|
|
"base_port": "49000"}
|
|
|
|
bay_id = 0
|
|
for adapter in self._adapters:
|
|
unit_id = 0
|
|
for unit in adapter.ports.keys():
|
|
nio = adapter.get_nio(unit)
|
|
if nio:
|
|
connection = None
|
|
if isinstance(nio, NIOUDP):
|
|
# UDP tunnel
|
|
connection = {"tunnel_udp": "{lport}:{rhost}:{rport}".format(lport=nio.lport,
|
|
rhost=nio.rhost,
|
|
rport=nio.rport)}
|
|
elif isinstance(nio, NIOTAP):
|
|
# TAP interface
|
|
connection = {"tap_dev": "{tap_device}".format(tap_device=nio.tap_device)}
|
|
|
|
elif isinstance(nio, NIOGenericEthernet):
|
|
# Ethernet interface
|
|
connection = {"eth_dev": "{ethernet_device}".format(ethernet_device=nio.ethernet_device)}
|
|
|
|
if connection:
|
|
interface = "{iouyap_id}:{bay}/{unit}".format(iouyap_id=str(self.application_id + 512), bay=bay_id, unit=unit_id)
|
|
config[interface] = connection
|
|
|
|
if nio.capturing:
|
|
pcap_data_link_type = nio.pcap_data_link_type.upper()
|
|
if pcap_data_link_type == "DLT_PPP_SERIAL":
|
|
pcap_protocol = "ppp"
|
|
elif pcap_data_link_type == "DLT_C_HDLC":
|
|
pcap_protocol = "hdlc"
|
|
elif pcap_data_link_type == "DLT_FRELAY":
|
|
pcap_protocol = "fr"
|
|
else:
|
|
pcap_protocol = "ethernet"
|
|
capture_info = {"pcap_file": "{pcap_file}".format(pcap_file=nio.pcap_output_file),
|
|
"pcap_protocol": pcap_protocol,
|
|
"pcap_overwrite": "y"}
|
|
config[interface].update(capture_info)
|
|
|
|
unit_id += 1
|
|
bay_id += 1
|
|
|
|
try:
|
|
with open(iouyap_ini, "w") as config_file:
|
|
config.write(config_file)
|
|
log.info("IOU {name} [id={id}]: iouyap.ini updated".format(name=self._name,
|
|
id=self._id))
|
|
except OSError as e:
|
|
raise IOUError("Could not create {}: {}".format(iouyap_ini, e))
|
|
|
|
@asyncio.coroutine
|
|
def stop(self):
|
|
"""
|
|
Stops the IOU process.
|
|
"""
|
|
|
|
if self.is_running():
|
|
# stop console support
|
|
if self._ioucon_thread:
|
|
self._ioucon_thread_stop_event.set()
|
|
if self._ioucon_thread.is_alive():
|
|
self._ioucon_thread.join(timeout=3.0) # wait for the thread to free the console port
|
|
self._ioucon_thread = None
|
|
|
|
self._terminate_process_iou()
|
|
if self._iou_process.returncode is None:
|
|
try:
|
|
yield from gns3server.utils.asyncio.wait_for_process_termination(self._iou_process, timeout=3)
|
|
except asyncio.TimeoutError:
|
|
if self._iou_process.returncode is None:
|
|
log.warn("IOU process {} is still running... killing it".format(self._iou_process.pid))
|
|
self._iou_process.kill()
|
|
|
|
self._iou_process = None
|
|
|
|
if self._iouyap_process is not None:
|
|
self._terminate_process_iouyap()
|
|
try:
|
|
yield from gns3server.utils.asyncio.wait_for_process_termination(self._iouyap_process, timeout=3)
|
|
except asyncio.TimeoutError:
|
|
if self._iouyap_process.returncode is None:
|
|
log.warn("IOUYAP process {} is still running... killing it".format(self._iouyap_process.pid))
|
|
self._iouyap_process.kill()
|
|
|
|
self._iouyap_process = None
|
|
self._started = False
|
|
|
|
def _terminate_process_iouyap(self):
|
|
"""Terminate the process if running"""
|
|
|
|
if self._iouyap_process:
|
|
log.info("Stopping IOUYAP instance {} PID={}".format(self.name, self._iouyap_process.pid))
|
|
try:
|
|
self._iouyap_process.terminate()
|
|
# Sometime the process can already be dead when we garbage collect
|
|
except ProcessLookupError:
|
|
pass
|
|
|
|
def _terminate_process_iou(self):
|
|
"""Terminate the process if running"""
|
|
|
|
if self._iou_process:
|
|
log.info("Stopping IOU instance {} PID={}".format(self.name, self._iou_process.pid))
|
|
try:
|
|
self._iou_process.terminate()
|
|
# Sometime the process can already be dead when we garbage collect
|
|
except ProcessLookupError:
|
|
pass
|
|
|
|
@asyncio.coroutine
|
|
def reload(self):
|
|
"""
|
|
Reload the IOU process. (Stop / Start)
|
|
"""
|
|
|
|
yield from self.stop()
|
|
yield from self.start()
|
|
|
|
def is_running(self):
|
|
"""
|
|
Checks if the IOU process is running
|
|
|
|
:returns: True or False
|
|
"""
|
|
|
|
if self._iou_process:
|
|
return True
|
|
return False
|
|
|
|
def is_iouyap_running(self):
|
|
"""
|
|
Checks if the IOUYAP process is running
|
|
|
|
:returns: True or False
|
|
"""
|
|
|
|
if self._iouyap_process:
|
|
return True
|
|
return False
|
|
|
|
def _create_netmap_config(self):
|
|
"""
|
|
Creates the NETMAP file.
|
|
"""
|
|
|
|
netmap_path = os.path.join(self.working_dir, "NETMAP")
|
|
try:
|
|
with open(netmap_path, "w") as f:
|
|
for bay in range(0, 16):
|
|
for unit in range(0, 4):
|
|
f.write("{iouyap_id}:{bay}/{unit}{iou_id:>5d}:{bay}/{unit}\n".format(iouyap_id=str(self.application_id + 512),
|
|
bay=bay,
|
|
unit=unit,
|
|
iou_id=self.application_id))
|
|
log.info("IOU {name} [id={id}]: NETMAP file created".format(name=self._name,
|
|
id=self._id))
|
|
except OSError as e:
|
|
raise IOUError("Could not create {}: {}".format(netmap_path, e))
|
|
|
|
@asyncio.coroutine
|
|
def _build_command(self):
|
|
"""
|
|
Command to start the IOU process.
|
|
(to be passed to subprocess.Popen())
|
|
IOU command line:
|
|
Usage: <image> [options] <application id>
|
|
<image>: unix-js-m | unix-is-m | unix-i-m | ...
|
|
<application id>: instance identifier (0 < id <= 1024)
|
|
Options:
|
|
-e <n> Number of Ethernet interfaces (default 2)
|
|
-s <n> Number of Serial interfaces (default 2)
|
|
-n <n> Size of nvram in Kb (default 64KB)
|
|
-b <string> IOS debug string
|
|
-c <name> Configuration file name
|
|
-d Generate debug information
|
|
-t Netio message trace
|
|
-q Suppress informational messages
|
|
-h Display this help
|
|
-C Turn off use of host clock
|
|
-m <n> Megabytes of router memory (default 256MB)
|
|
-L Disable local console, use remote console
|
|
-l Enable Layer 1 keepalive messages
|
|
-u <n> UDP port base for distributed networks
|
|
-R Ignore options from the IOURC file
|
|
-U Disable unix: file system location
|
|
-W Disable watchdog timer
|
|
-N Ignore the NETMAP file
|
|
"""
|
|
|
|
command = [self._path]
|
|
if len(self._ethernet_adapters) != 2:
|
|
command.extend(["-e", str(len(self._ethernet_adapters))])
|
|
if len(self._serial_adapters) != 2:
|
|
command.extend(["-s", str(len(self._serial_adapters))])
|
|
if not self.use_default_iou_values:
|
|
command.extend(["-n", str(self._nvram)])
|
|
command.extend(["-m", str(self._ram)])
|
|
command.extend(["-L"]) # disable local console, use remote console
|
|
|
|
initial_config_file = self.initial_config_file
|
|
if initial_config_file:
|
|
command.extend(["-c", os.path.basename(initial_config_file)])
|
|
if self._l1_keepalives:
|
|
yield from self._enable_l1_keepalives(command)
|
|
command.extend([str(self.application_id)])
|
|
return command
|
|
|
|
def read_iou_stdout(self):
|
|
"""
|
|
Reads the standard output of the IOU process.
|
|
Only use when the process has been stopped or has crashed.
|
|
"""
|
|
|
|
output = ""
|
|
if self._iou_stdout_file:
|
|
try:
|
|
with open(self._iou_stdout_file, errors="replace") as file:
|
|
output = file.read()
|
|
except OSError as e:
|
|
log.warn("could not read {}: {}".format(self._iou_stdout_file, e))
|
|
return output
|
|
|
|
def read_iouyap_stdout(self):
|
|
"""
|
|
Reads the standard output of the iouyap process.
|
|
Only use when the process has been stopped or has crashed.
|
|
"""
|
|
|
|
output = ""
|
|
if self._iouyap_stdout_file:
|
|
try:
|
|
with open(self._iouyap_stdout_file, errors="replace") as file:
|
|
output = file.read()
|
|
except OSError as e:
|
|
log.warn("could not read {}: {}".format(self._iouyap_stdout_file, e))
|
|
return output
|
|
|
|
def _start_ioucon(self):
|
|
"""
|
|
Starts ioucon thread (for console connections).
|
|
"""
|
|
|
|
if not self._ioucon_thread:
|
|
telnet_server = "{}:{}".format(self._manager.port_manager.console_host, self.console)
|
|
log.info("Starting ioucon for IOU instance {} to accept Telnet connections on {}".format(self._name, telnet_server))
|
|
args = argparse.Namespace(appl_id=str(self.application_id), debug=False, escape='^^', telnet_limit=0, telnet_server=telnet_server)
|
|
self._ioucon_thread_stop_event = threading.Event()
|
|
self._ioucon_thread = threading.Thread(target=start_ioucon, args=(args, self._ioucon_thread_stop_event))
|
|
self._ioucon_thread.start()
|
|
|
|
@property
|
|
def ethernet_adapters(self):
|
|
"""
|
|
Returns the number of Ethernet adapters for this IOU instance.
|
|
:returns: number of adapters
|
|
"""
|
|
|
|
return len(self._ethernet_adapters)
|
|
|
|
@ethernet_adapters.setter
|
|
def ethernet_adapters(self, ethernet_adapters):
|
|
"""
|
|
Sets the number of Ethernet adapters for this IOU instance.
|
|
:param ethernet_adapters: number of adapters
|
|
"""
|
|
|
|
self._ethernet_adapters.clear()
|
|
for _ in range(0, ethernet_adapters):
|
|
self._ethernet_adapters.append(EthernetAdapter(interfaces=4))
|
|
|
|
log.info("IOU {name} [id={id}]: number of Ethernet adapters changed to {adapters}".format(name=self._name,
|
|
id=self._id,
|
|
adapters=len(self._ethernet_adapters)))
|
|
|
|
self._adapters = self._ethernet_adapters + self._serial_adapters
|
|
|
|
@property
|
|
def serial_adapters(self):
|
|
"""
|
|
Returns the number of Serial adapters for this IOU instance.
|
|
:returns: number of adapters
|
|
"""
|
|
|
|
return len(self._serial_adapters)
|
|
|
|
@serial_adapters.setter
|
|
def serial_adapters(self, serial_adapters):
|
|
"""
|
|
Sets the number of Serial adapters for this IOU instance.
|
|
:param serial_adapters: number of adapters
|
|
"""
|
|
|
|
self._serial_adapters.clear()
|
|
for _ in range(0, serial_adapters):
|
|
self._serial_adapters.append(SerialAdapter(interfaces=4))
|
|
|
|
log.info("IOU {name} [id={id}]: number of Serial adapters changed to {adapters}".format(name=self._name,
|
|
id=self._id,
|
|
adapters=len(self._serial_adapters)))
|
|
|
|
self._adapters = self._ethernet_adapters + self._serial_adapters
|
|
|
|
def adapter_add_nio_binding(self, adapter_number, port_number, nio):
|
|
"""
|
|
Adds a adapter NIO binding.
|
|
:param adapter_number: adapter ID
|
|
:param port_number: port ID
|
|
:param nio: NIO instance to add to the adapter/port
|
|
"""
|
|
|
|
try:
|
|
adapter = self._adapters[adapter_number]
|
|
except IndexError:
|
|
raise IOUError("Adapter {adapter_number} doesn't exist on IOU {name}".format(name=self._name,
|
|
adapter_number=adapter_number))
|
|
|
|
if not adapter.port_exists(port_number):
|
|
raise IOUError("Port {port_number} doesn't exist in adapter {adapter}".format(adapter=adapter,
|
|
port_number=port_number))
|
|
|
|
adapter.add_nio(port_number, nio)
|
|
log.info("IOU {name} [id={id}]: {nio} added to {adapter_number}/{port_number}".format(name=self._name,
|
|
id=self._id,
|
|
nio=nio,
|
|
adapter_number=adapter_number,
|
|
port_number=port_number))
|
|
if self.is_iouyap_running():
|
|
self._update_iouyap_config()
|
|
os.kill(self._iouyap_process.pid, signal.SIGHUP)
|
|
|
|
def adapter_remove_nio_binding(self, adapter_number, port_number):
|
|
"""
|
|
Removes a adapter NIO binding.
|
|
:param adapter_number: adapter ID
|
|
:param port_number: port ID
|
|
:returns: NIO instance
|
|
"""
|
|
|
|
try:
|
|
adapter = self._adapters[adapter_number]
|
|
except IndexError:
|
|
raise IOUError("Adapter {adapter_number} doesn't exist on IOU {name}".format(name=self._name,
|
|
adapter_number=adapter_number))
|
|
|
|
if not adapter.port_exists(port_number):
|
|
raise IOUError("Port {port_number} doesn't exist in adapter {adapter}".format(adapter=adapter,
|
|
port_number=port_number))
|
|
|
|
nio = adapter.get_nio(port_number)
|
|
if isinstance(nio, NIOUDP):
|
|
self.manager.port_manager.release_udp_port(nio.lport, self._project)
|
|
adapter.remove_nio(port_number)
|
|
log.info("IOU {name} [id={id}]: {nio} removed from {adapter_number}/{port_number}".format(name=self._name,
|
|
id=self._id,
|
|
nio=nio,
|
|
adapter_number=adapter_number,
|
|
port_number=port_number))
|
|
if self.is_iouyap_running():
|
|
self._update_iouyap_config()
|
|
os.kill(self._iouyap_process.pid, signal.SIGHUP)
|
|
|
|
return nio
|
|
|
|
@property
|
|
def l1_keepalives(self):
|
|
"""
|
|
Returns either layer 1 keepalive messages option is enabled or disabled.
|
|
:returns: boolean
|
|
"""
|
|
|
|
return self._l1_keepalives
|
|
|
|
@l1_keepalives.setter
|
|
def l1_keepalives(self, state):
|
|
"""
|
|
Enables or disables layer 1 keepalive messages.
|
|
:param state: boolean
|
|
"""
|
|
|
|
self._l1_keepalives = state
|
|
if state:
|
|
log.info("IOU {name} [id={id}]: has activated layer 1 keepalive messages".format(name=self._name, id=self._id))
|
|
else:
|
|
log.info("IOU {name} [id={id}]: has deactivated layer 1 keepalive messages".format(name=self._name, id=self._id))
|
|
|
|
@asyncio.coroutine
|
|
def _enable_l1_keepalives(self, command):
|
|
"""
|
|
Enables L1 keepalive messages if supported.
|
|
:param command: command line
|
|
"""
|
|
|
|
env = os.environ.copy()
|
|
if "IOURC" not in os.environ:
|
|
env["IOURC"] = self.iourc_path
|
|
try:
|
|
output = yield from gns3server.utils.asyncio.subprocess_check_output(self._path, "-h", cwd=self.working_dir, env=env)
|
|
if re.search("-l\s+Enable Layer 1 keepalive messages", output):
|
|
command.extend(["-l"])
|
|
else:
|
|
raise IOUError("layer 1 keepalive messages are not supported by {}".format(os.path.basename(self._path)))
|
|
except (OSError, subprocess.SubprocessError) as e:
|
|
log.warn("could not determine if layer 1 keepalive messages are supported by {}: {}".format(os.path.basename(self._path), e))
|
|
|
|
@property
|
|
def initial_config(self):
|
|
"""Return the content of the current initial-config file"""
|
|
|
|
config_file = self.initial_config_file
|
|
if config_file is None:
|
|
return None
|
|
|
|
try:
|
|
with open(config_file) as f:
|
|
return f.read()
|
|
except OSError as e:
|
|
raise IOUError("Can't read configuration file '{}'".format(config_file))
|
|
|
|
@initial_config.setter
|
|
def initial_config(self, initial_config):
|
|
"""
|
|
Update the initial config
|
|
|
|
:param initial_config: The content of the initial configuration file
|
|
"""
|
|
|
|
try:
|
|
script_file = os.path.join(self.working_dir, "initial-config.cfg")
|
|
with open(script_file, 'w+') as f:
|
|
if initial_config is None:
|
|
f.write('')
|
|
else:
|
|
initial_config = initial_config.replace("%h", self._name)
|
|
f.write(initial_config)
|
|
except OSError as e:
|
|
raise IOUError("Can't write initial configuration file '{}'".format(self.script_file))
|
|
|
|
@property
|
|
def initial_config_file(self):
|
|
"""
|
|
Returns the initial config file for this IOU instance.
|
|
|
|
:returns: path to config file. None if the file doesn't exist
|
|
"""
|
|
|
|
path = os.path.join(self.working_dir, 'initial-config.cfg')
|
|
if os.path.exists(path):
|
|
return path
|
|
else:
|
|
return None
|
|
|
|
@property
|
|
def relative_initial_config_file(self):
|
|
"""
|
|
Returns the initial config file relative to the project directory.
|
|
It's compatible with pre 1.3 topologies.
|
|
|
|
:returns: path to config file. None if the file doesn't exist
|
|
"""
|
|
|
|
path = os.path.join(self.working_dir, 'initial-config.cfg')
|
|
if os.path.exists(path):
|
|
return 'initial-config.cfg'
|
|
else:
|
|
return None
|
|
|
|
@asyncio.coroutine
|
|
def start_capture(self, adapter_number, port_number, output_file, data_link_type="DLT_EN10MB"):
|
|
"""
|
|
Starts a packet capture.
|
|
:param adapter_number: adapter ID
|
|
:param port_number: port ID
|
|
:param port: allocated port
|
|
:param output_file: PCAP destination file for the capture
|
|
:param data_link_type: PCAP data link type (DLT_*), default is DLT_EN10MB
|
|
"""
|
|
|
|
try:
|
|
adapter = self._adapters[adapter_number]
|
|
except IndexError:
|
|
raise IOUError("Adapter {adapter_number} doesn't exist on IOU {name}".format(name=self._name,
|
|
adapter_number=adapter_number))
|
|
|
|
if not adapter.port_exists(port_number):
|
|
raise IOUError("Port {port_number} doesn't exist in adapter {adapter}".format(adapter=adapter,
|
|
port_number=port_number))
|
|
|
|
nio = adapter.get_nio(port_number)
|
|
if nio.capturing:
|
|
raise IOUError("Packet capture is already activated on {adapter_number}/{port_number}".format(adapter_number=adapter_number,
|
|
port_number=port_number))
|
|
|
|
try:
|
|
os.makedirs(os.path.dirname(output_file))
|
|
except FileExistsError:
|
|
pass
|
|
except OSError as e:
|
|
raise IOUError("Could not create captures directory {}".format(e))
|
|
|
|
nio.startPacketCapture(output_file, data_link_type)
|
|
|
|
log.info("IOU {name} [id={id}]: starting packet capture on {adapter_number}/{port_number}".format(name=self._name,
|
|
id=self._id,
|
|
adapter_number=adapter_number,
|
|
port_number=port_number))
|
|
|
|
if self.is_iouyap_running():
|
|
self._update_iouyap_config()
|
|
os.kill(self._iouyap_process.pid, signal.SIGHUP)
|
|
|
|
@asyncio.coroutine
|
|
def stop_capture(self, adapter_number, port_number):
|
|
"""
|
|
Stops a packet capture.
|
|
:param adapter_number: adapter ID
|
|
:param port_number: port ID
|
|
"""
|
|
|
|
try:
|
|
adapter = self._adapters[adapter_number]
|
|
except IndexError:
|
|
raise IOUError("Adapter {adapter_number} doesn't exist on IOU {name}".format(name=self._name,
|
|
adapter_number=adapter_number))
|
|
|
|
if not adapter.port_exists(port_number):
|
|
raise IOUError("Port {port_number} doesn't exist in adapter {adapter}".format(adapter=adapter,
|
|
port_number=port_number))
|
|
|
|
nio = adapter.get_nio(port_number)
|
|
nio.stopPacketCapture()
|
|
log.info("IOU {name} [id={id}]: stopping packet capture on {adapter_number}/{port_number}".format(name=self._name,
|
|
id=self._id,
|
|
adapter_number=adapter_number,
|
|
port_number=port_number))
|
|
if self.is_iouyap_running():
|
|
self._update_iouyap_config()
|
|
os.kill(self._iouyap_process.pid, signal.SIGHUP)
|