# -*- coding: utf-8 -*- # # Copyright (C) 2013 GNS3 Technologies Inc. # # This program is free software: you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation, either version 3 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program. If not, see . """ Interface for Dynamips virtual Machine module ("vm") http://github.com/GNS3/dynamips/blob/master/README.hypervisor#L77 """ from ..dynamips_error import DynamipsError from ...attic import find_unused_port import time import sys import os import base64 import logging log = logging.getLogger(__name__) class Router(object): """ Dynamips router implementation. :param hypervisor: Dynamips hypervisor instance :param name: name for this router :param router_id: router instance ID :param platform: c7200, c3745, c3725, c3600, c2691, c2600 or c1700 :param ghost_flag: used when creating a ghost IOS. """ _instances = [] _allocated_console_ports = [] _allocated_aux_ports = [] _status = {0: "inactive", 1: "shutting down", 2: "running", 3: "suspended"} def __init__(self, hypervisor, name, router_id=None, platform="c7200", ghost_flag=False): if not ghost_flag: if not router_id: # find an instance identifier if none is provided (0 < id <= 4096) self._id = 0 for identifier in range(1, 4097): if identifier not in self._instances: self._id = identifier self._instances.append(self._id) break if self._id == 0: raise DynamipsError("Maximum number of instances reached") else: if router_id in self._instances: raise DynamipsError("Router identifier {} is already used by another router".format(router_id)) self._id = router_id self._instances.append(self._id) else: log.info("creating a new ghost IOS file") self._id = 0 name = "Ghost" self._hypervisor = hypervisor self._name = '"' + name + '"' # put name into quotes to protect spaces self._platform = platform self._image = "" self._startup_config = "" self._private_config = "" self._ram = 128 # Megabytes self._nvram = 128 # Kilobytes self._mmap = True self._sparsemem = True self._clock_divisor = 8 self._idlepc = "" self._idlemax = 500 self._idlesleep = 30 self._ghost_file = "" self._ghost_status = 0 if sys.platform.startswith("win"): self._exec_area = 16 # 16 MB by default on Windows (Cygwin) else: self._exec_area = 64 # 64 MB on other systems self._jit_sharing_group = None self._disk0 = 0 # Megabytes self._disk1 = 0 # Megabytes self._confreg = "0x2102" self._console = None self._aux = None self._mac_addr = None self._system_id = "FTX0945W0MY" # processor board ID in IOS self._slots = [] self._hypervisor.send("vm create {name} {id} {platform}".format(name=self._name, id=self._id, platform=self._platform)) if not ghost_flag: log.info("router {platform} {name} [id={id}] has been created".format(name=self._name, platform=platform, id=self._id)) try: # allocate a console port self._console = find_unused_port(self._hypervisor.console_start_port_range, self._hypervisor.console_end_port_range, self._hypervisor.host, ignore_ports=self._allocated_console_ports) self._hypervisor.send("vm set_con_tcp_port {name} {console}".format(name=self._name, console=self._console)) self._allocated_console_ports.append(self._console) # allocate a auxiliary console port self._aux = find_unused_port(self._hypervisor.aux_start_port_range, self._hypervisor.aux_end_port_range, self._hypervisor.host, ignore_ports=self._allocated_aux_ports) self._hypervisor.send("vm set_aux_tcp_port {name} {aux}".format(name=self._name, aux=self._aux)) self._allocated_aux_ports.append(self._aux) except Exception as e: raise DynamipsError(e) # get the default base MAC address self._mac_addr = self._hypervisor.send("{platform} get_mac_addr {name}".format(platform=self._platform, name=self._name))[0] self._hypervisor.devices.append(self) @classmethod def reset(cls): """ Resets the instance count and the allocated instances list. """ cls._instances.clear() cls._allocated_console_ports.clear() cls._allocated_aux_ports.clear() def defaults(self): """ Returns all the default base attribute values for routers. :returns: default values (dictionary) """ router_defaults = {"platform": self._platform, "image": self._image, "startup_config": self._startup_config, "private_config": self._private_config, "ram": self._ram, "nvram": self._nvram, "mmap": self._mmap, "sparsemem": self._sparsemem, "clock_divisor": self._clock_divisor, "idlepc": self._idlepc, "idlemax": self._idlemax, "idlesleep": self._idlesleep, "exec_area": self._exec_area, "jit_sharing_group": self._jit_sharing_group, "disk0": self._disk0, "disk1": self._disk1, "confreg": self._confreg, "console": self._console, "aux": self._aux, "mac_addr": self._mac_addr, "system_id": self._system_id} slot_id = 0 for slot in self._slots: if slot: slot = str(slot) router_defaults["slot" + str(slot_id)] = slot slot_id += 1 if self._slots[0] and self._slots[0].wics: for wic_slot_id in range(0, len(self._slots[0].wics)): router_defaults["wic" + str(wic_slot_id)] = None return router_defaults @property def id(self): """ Returns the unique ID for this router. :returns: id (integer) """ return self._id @property def name(self): """ Returns the name of this router. :returns: name (string) """ return self._name[1:-1] # remove quotes @name.setter def name(self, new_name): """ Renames this router. :param new_name: new name string """ if self._startup_config: # change the hostname in the startup-config startup_config_path = os.path.join(self.hypervisor.working_dir, "configs", "i{}_startup-config.cfg".format(self.id)) if os.path.isfile(startup_config_path): try: with open(startup_config_path, "r+", errors="replace") as f: old_config = f.read() new_config = old_config.replace(self.name, new_name) f.seek(0) f.write(new_config) except OSError as e: raise DynamipsError("Could not amend the configuration {}: {}".format(startup_config_path, e)) if self._private_config: # change the hostname in the private-config private_config_path = os.path.join(self.hypervisor.working_dir, "configs", "i{}_private-config.cfg".format(self.id)) if os.path.isfile(private_config_path): try: with open(private_config_path, "r+", errors="replace") as f: old_config = f.read() new_config = old_config.replace(self.name, new_name) f.seek(0) f.write(new_config) except OSError as e: raise DynamipsError("Could not amend the configuration {}: {}".format(private_config_path, e)) new_name = '"' + new_name + '"' # put the new name into quotes to protect spaces self._hypervisor.send("vm rename {name} {new_name}".format(name=self._name, new_name=new_name)) log.info("router {name} [id={id}]: renamed to {new_name}".format(name=self._name, id=self._id, new_name=new_name)) self._name = new_name @property def platform(self): """ Returns the platform of this router. :returns: platform name (string): c7200, c3745, c3725, c3600, c2691, c2600 or c1700 """ return self._platform @property def hypervisor(self): """ Returns the current hypervisor. :returns: hypervisor instance """ return self._hypervisor def list(self): """ Returns all VM instances :returns: list of all VM instances """ return self._hypervisor.send("vm list") def list_con_ports(self): """ Returns all VM console TCP ports :returns: list of port numbers """ return self._hypervisor.send("vm list_con_ports") def delete(self): """ Deletes this router. """ self._hypervisor.send("vm delete {}".format(self._name)) self._hypervisor.devices.remove(self) log.info("router {name} [id={id}] has been deleted".format(name=self._name, id=self._id)) if self._id in self._instances: self._instances.remove(self._id) if self.console: self._allocated_console_ports.remove(self.console) if self.aux: self._allocated_aux_ports.remove(self.aux) def clean_delete(self): """ Deletes this router & associated files (nvram, disks etc.) """ self._hypervisor.send("vm clean_delete {}".format(self._name)) self._hypervisor.devices.remove(self) if self._startup_config: # delete the startup-config startup_config_path = os.path.join(self.hypervisor.working_dir, "configs", "{}.cfg".format(self.name)) if os.path.isfile(startup_config_path): os.remove(startup_config_path) if self._private_config: # delete the private-config private_config_path = os.path.join(self.hypervisor.working_dir, "configs", "{}-private.cfg".format(self.name)) if os.path.isfile(private_config_path): os.remove(private_config_path) log.info("router {name} [id={id}] has been deleted (including associated files)".format(name=self._name, id=self._id)) if self._id in self._instances: self._instances.remove(self._id) if self.console: self._allocated_console_ports.remove(self.console) if self.aux: self._allocated_aux_ports.remove(self.aux) def start(self): """ Starts this router. At least the IOS image must be set before starting it. """ status = self.get_status() if status == "suspended": self.resume() elif status == "inactive": if not os.path.isfile(self._image) or not os.path.exists(self._image): if os.path.islink(self._image): raise DynamipsError("IOS image '{}' linked to '{}' is not accessible".format(self._image, os.path.realpath(self._image))) else: raise DynamipsError("IOS image '{}' is not accessible".format(self._image)) try: with open(self._image, "rb") as f: # read the first 7 bytes of the file. elf_header_start = f.read(7) except OSError as e: raise DynamipsError("Cannot read ELF header for IOS image {}: {}".format(self._image, e)) # IOS images must start with the ELF magic number, be 32-bit, big endian and have an ELF version of 1 if elf_header_start != b'\x7fELF\x01\x02\x01': raise DynamipsError("'{}' is not a valid IOS image".format(self._image)) self._hypervisor.send("vm start {}".format(self._name)) log.info("router {name} [id={id}] has been started".format(name=self._name, id=self._id)) def stop(self): """ Stops this router. The settings are kept. """ if self.get_status() != "inactive": self._hypervisor.send("vm stop {}".format(self._name)) log.info("router {name} [id={id}] has been stopped".format(name=self._name, id=self._id)) def suspend(self): """ Suspends this router """ if self.get_status() == "running": self._hypervisor.send("vm suspend {}".format(self._name)) log.info("router {name} [id={id}] has been suspended".format(name=self._name, id=self._id)) def resume(self): """ Resumes this suspended router """ self._hypervisor.send("vm resume {}".format(self._name)) log.info("router {name} [id={id}] has been resumed".format(name=self._name, id=self._id)) def get_status(self): """ Returns the status of this router :returns: inactive, shutting down, running or suspended. """ status_id = int(self._hypervisor.send("vm get_status {}".format(self._name))[0]) return self._status[status_id] def is_running(self): """ Checks if this router is running. :returns: True if running, False otherwise """ if self.get_status() == "running": return True return False @property def jit_sharing_group(self): """ Returns the JIT sharing group for this router. :returns: translation sharing group ID """ return self._jit_sharing_group @jit_sharing_group.setter def jit_sharing_group(self, group_id): """ Sets the translation sharing group (unstable). :param group_id: translation sharing group ID """ if not self._image: raise DynamipsError("Register an IOS image fist") try: self._hypervisor.send("vm set_tsg {name} {group_id}".format(name=self._name, group_id=group_id)) except DynamipsError: raise DynamipsError("JIT sharing is only supported in Dynamips >= 0.2.8-RC3 unstable") log.info("router {name} [id={id}]: set in JIT sharing group {group_id}".format(name=self._name, id=self._id, group_id=group_id)) self._jit_sharing_group = group_id self._hypervisor.add_jitsharing_group(os.path.basename(self._image), group_id) def set_debug_level(self, level): """ Sets the debug level for this router (default is 0). :param level: level number """ self._hypervisor.send("vm set_debug_level {name} {level}".format(name=self._name, level=level)) @property def image(self): """ Returns this IOS image for this router. :returns: path to IOS image file """ return self._image @image.setter def image(self, image): """ Sets the IOS image for this router. There is no default. :param image: path to IOS image file """ # encase image in quotes to protect spaces in the path self._hypervisor.send("vm set_ios {name} {image}".format(name=self._name, image='"' + image + '"')) log.info("router {name} [id={id}]: has a new IOS image set: {image}".format(name=self._name, id=self._id, image='"' + image + '"')) self._image = image @property def startup_config(self): """ Returns the startup-config for this router. :returns: path to startup-config file """ return self._startup_config @startup_config.setter def startup_config(self, startup_config): """ Sets the startup-config for this router. :param startup_config: path to startup-config file """ self._startup_config = startup_config @property def private_config(self): """ Returns the private-config for this router. :returns: path to private-config file """ return self._private_config @private_config.setter def private_config(self, private_config): """ Sets the private-config for this router. :param private_config: path to private-config file """ self._private_config = private_config def set_config(self, startup_config, private_config=''): """ Sets the config files that are pushed to startup-config and private-config in NVRAM when the instance is started. :param startup_config: path to statup-config file :param private_config: path to private-config file (keep existing data when if an empty string) """ if self._startup_config != startup_config or self._private_config != private_config: self._hypervisor.send("vm set_config {name} {startup} {private}".format(name=self._name, startup='"' + startup_config + '"', private='"' + private_config + '"')) log.info("router {name} [id={id}]: has a startup-config set: {startup}".format(name=self._name, id=self._id, startup='"' + startup_config + '"')) self._startup_config = startup_config if private_config: log.info("router {name} [id={id}]: has a private-config set: {private}".format(name=self._name, id=self._id, private='"' + private_config + '"')) self._private_config = private_config def extract_config(self): """ Gets the contents of the config files startup-config and private-config from NVRAM. :returns: tuple (startup-config, private-config) base64 encoded """ try: reply = self._hypervisor.send("vm extract_config {}".format(self._name))[0].rsplit(' ', 2)[-2:] except IOError: # for some reason Dynamips gets frozen when it does not find the magic number in the NVRAM file. return None, None startup_config = reply[0][1:-1] # get statup-config and remove single quotes private_config = reply[1][1:-1] # get private-config and remove single quotes return startup_config, private_config def push_config(self, startup_config, private_config='(keep)'): """ Pushes configuration to the config files startup-config and private-config in NVRAM. The data is a Base64 encoded string, or '(keep)' to keep existing data. :param startup_config: statup-config string base64 encoded :param private_config: private-config string base64 encoded (keep existing data when if the value is ('keep')) """ self._hypervisor.send("vm push_config {name} {startup} {private}".format(name=self._name, startup=startup_config, private=private_config)) log.info("router {name} [id={id}]: new startup-config pushed".format(name=self._name, id=self._id)) if private_config != '(keep)': log.info("router {name} [id={id}]: new private-config pushed".format(name=self._name, id=self._id)) def save_configs(self): """ Saves the startup-config and private-config to files. """ if self.startup_config or self.private_config: startup_config_base64, private_config_base64 = self.extract_config() if startup_config_base64: try: config = base64.decodebytes(startup_config_base64.encode("utf-8")).decode("utf-8") config = "!\n" + config.replace("\r", "") config_path = os.path.join(self.hypervisor.working_dir, self.startup_config) with open(config_path, "w") as f: log.info("saving startup-config to {}".format(self.startup_config)) f.write(config) except OSError as e: raise DynamipsError("Could not save the startup configuration {}: {}".format(config_path, e)) if private_config_base64: try: config = base64.decodebytes(private_config_base64.encode("utf-8")).decode("utf-8") config = "!\n" + config.replace("\r", "") config_path = os.path.join(self.hypervisor.working_dir, self.private_config) with open(config_path, "w") as f: log.info("saving private-config to {}".format(self.private_config)) f.write(config) except OSError as e: raise DynamipsError("Could not save the private configuration {}: {}".format(config_path, e)) @property def ram(self): """ Returns the amount of RAM allocated to this router. :returns: amount of RAM in Mbytes (integer) """ return self._ram @ram.setter def ram(self, ram): """ Sets amount of RAM allocated to this router :param ram: amount of RAM in Mbytes (integer) """ if self._ram == ram: return self._hypervisor.send("vm set_ram {name} {ram}".format(name=self._name, ram=ram)) log.info("router {name} [id={id}]: RAM updated from {old_ram}MB to {new_ram}MB".format(name=self._name, id=self._id, old_ram=self._ram, new_ram=ram)) self._hypervisor.decrease_memory_load(self._ram) self._ram = ram self._hypervisor.increase_memory_load(ram) @property def nvram(self): """ Returns the mount of NVRAM allocated to this router. :returns: amount of NVRAM in Kbytes (integer) """ return self._nvram @nvram.setter def nvram(self, nvram): """ Sets amount of NVRAM allocated to this router :param nvram: amount of NVRAM in Kbytes (integer) """ if self._nvram == nvram: return self._hypervisor.send("vm set_nvram {name} {nvram}".format(name=self._name, nvram=nvram)) log.info("router {name} [id={id}]: NVRAM updated from {old_nvram}KB to {new_nvram}KB".format(name=self._name, id=self._id, old_nvram=self._nvram, new_nvram=nvram)) self._nvram = nvram @property def mmap(self): """ Returns True if a mapped file is used to simulate this router memory. :returns: boolean either mmap is activated or not """ return self._mmap @mmap.setter def mmap(self, mmap): """ Enable/Disable use of a mapped file to simulate router memory. By default, a mapped file is used. This is a bit slower, but requires less memory. :param mmap: activate/deactivate mmap (boolean) """ if mmap: flag = 1 else: flag = 0 self._hypervisor.send("vm set_ram_mmap {name} {mmap}".format(name=self._name, mmap=flag)) if mmap: log.info("router {name} [id={id}]: mmap enabled".format(name=self._name, id=self._id)) else: log.info("router {name} [id={id}]: mmap disabled".format(name=self._name, id=self._id)) self._mmap = mmap @property def sparsemem(self): """ Returns True if sparse memory is used on this router. :returns: boolean either mmap is activated or not """ return self._sparsemem @sparsemem.setter def sparsemem(self, sparsemem): """ Enable/disable use of sparse memory :param sparsemem: activate/deactivate sparsemem (boolean) """ if sparsemem: flag = 1 else: flag = 0 self._hypervisor.send("vm set_sparse_mem {name} {sparsemem}".format(name=self._name, sparsemem=flag)) if sparsemem: log.info("router {name} [id={id}]: sparse memory enabled".format(name=self._name, id=self._id)) else: log.info("router {name} [id={id}]: sparse memory disabled".format(name=self._name, id=self._id)) self._sparsemem = sparsemem @property def clock_divisor(self): """ Returns the clock divisor value for this router. :returns: clock divisor value (integer) """ return self._clock_divisor @clock_divisor.setter def clock_divisor(self, clock_divisor): """ Sets the clock divisor value. The higher is the value, the faster is the clock in the virtual machine. The default is 4, but it is often required to adjust it. :param clock_divisor: clock divisor value (integer) """ self._hypervisor.send("vm set_clock_divisor {name} {clock}".format(name=self._name, clock=clock_divisor)) log.info("router {name} [id={id}]: clock divisor updated from {old_clock} to {new_clock}".format(name=self._name, id=self._id, old_clock=self._clock_divisor, new_clock=clock_divisor)) self._clock_divisor = clock_divisor @property def idlepc(self): """ Returns the idle Pointer Counter (PC). :returns: idlepc value (string) """ return self._idlepc @idlepc.setter def idlepc(self, idlepc): """ Sets the idle Pointer Counter (PC) :param idlepc: idlepc value (string) """ if not idlepc: idlepc = "0x0" if not self.is_running(): # router is not running self._hypervisor.send("vm set_idle_pc {name} {idlepc}".format(name=self._name, idlepc=idlepc)) else: self._hypervisor.send("vm set_idle_pc_online {name} 0 {idlepc}".format(name=self._name, idlepc=idlepc)) log.info("router {name} [id={id}]: idle-PC set to {idlepc}".format(name=self._name, id=self._id, idlepc=idlepc)) self._idlepc = idlepc def get_idle_pc_prop(self): """ Gets the idle PC proposals. Takes 1000 measurements and records up to 10 idle PC proposals. There is a 10ms wait between each measurement. :returns: list of idle PC proposal """ if not self.is_running(): # router is not running raise DynamipsError("router {name} is not running".format(name=self._name)) log.info("router {name} [id={id}] has started calculating Idle-PC values".format(name=self._name, id=self._id)) begin = time.time() idlepcs = self._hypervisor.send("vm get_idle_pc_prop {} 0".format(self._name)) log.info("router {name} [id={id}] has finished calculating Idle-PC values after {time:.4f} seconds".format(name=self._name, id=self._id, time=time.time() - begin)) return idlepcs def show_idle_pc_prop(self): """ Dumps the idle PC proposals (previously generated). :returns: list of idle PC proposal """ if not self.is_running(): # router is not running raise DynamipsError("router {name} is not running".format(name=self._name)) return self._hypervisor.send("vm show_idle_pc_prop {} 0".format(self._name)) @property def idlemax(self): """ Returns CPU idle max value. :returns: idle max (integer) """ return self._idlemax @idlemax.setter def idlemax(self, idlemax): """ Sets CPU idle max value :param idlemax: idle max value (integer) """ if self.is_running(): # router is running self._hypervisor.send("vm set_idle_max {name} 0 {idlemax}".format(name=self._name, idlemax=idlemax)) log.info("router {name} [id={id}]: idlemax updated from {old_idlemax} to {new_idlemax}".format(name=self._name, id=self._id, old_idlemax=self._idlemax, new_idlemax=idlemax)) self._idlemax = idlemax @property def idlesleep(self): """ Returns CPU idle sleep time value. :returns: idle sleep (integer) """ return self._idlesleep @idlesleep.setter def idlesleep(self, idlesleep): """ Sets CPU idle sleep time value. :param idlesleep: idle sleep value (integer) """ if self.is_running(): # router is running self._hypervisor.send("vm set_idle_sleep_time {name} 0 {idlesleep}".format(name=self._name, idlesleep=idlesleep)) log.info("router {name} [id={id}]: idlesleep updated from {old_idlesleep} to {new_idlesleep}".format(name=self._name, id=self._id, old_idlesleep=self._idlesleep, new_idlesleep=idlesleep)) self._idlesleep = idlesleep def show_timer_drift(self): """ Shows info about potential timer drift. :returns: timer drift info. """ return self._hypervisor.send("vm show_timer_drift {} 0".format(self._name)) @property def ghost_file(self): """ Returns ghost RAM file. :returns: path to ghost file """ return self._ghost_file @ghost_file.setter def ghost_file(self, ghost_file): """ Sets ghost RAM file :ghost_file: path to ghost file """ self._hypervisor.send("vm set_ghost_file {name} {ghost_file}".format(name=self._name, ghost_file=ghost_file)) log.info("router {name} [id={id}]: ghost file set to {ghost_file}".format(name=self._name, id=self._id, ghost_file=ghost_file)) self._ghost_file = ghost_file # if this is a ghost instance, track this as a hosted ghost instance by this hypervisor if self.ghost_status == 1: self._hypervisor.add_ghost(ghost_file, self) def formatted_ghost_file(self): """ Returns a properly formatted ghost file name. :returns: formatted ghost_file name (string) """ # replace specials characters in 'drive:\filename' in Linux and Dynamips in MS Windows or viceversa. ghost_file = "{}-{}.ghost".format(os.path.basename(self._image), self._ram) ghost_file = ghost_file.replace('\\', '-').replace('/', '-').replace(':', '-') return ghost_file @property def ghost_status(self): """Returns ghost RAM status :returns: ghost status (integer) """ return self._ghost_status @ghost_status.setter def ghost_status(self, ghost_status): """ Sets ghost RAM status :param ghost_status: state flag indicating status 0 => Do not use IOS ghosting 1 => This is a ghost instance 2 => Use an existing ghost instance """ self._hypervisor.send("vm set_ghost_status {name} {ghost_status}".format(name=self._name, ghost_status=ghost_status)) log.info("router {name} [id={id}]: ghost status set to {ghost_status}".format(name=self._name, id=self._id, ghost_status=ghost_status)) self._ghost_status = ghost_status @property def exec_area(self): """ Returns the exec area value. :returns: exec area value (integer) """ return self._exec_area @exec_area.setter def exec_area(self, exec_area): """ Sets the exec area value. The exec area is a pool of host memory used to store pages translated by the JIT (they contain the native code corresponding to MIPS code pages). :param exec_area: exec area value (integer) """ self._hypervisor.send("vm set_exec_area {name} {exec_area}".format(name=self._name, exec_area=exec_area)) log.info("router {name} [id={id}]: exec area updated from {old_exec}MB to {new_exec}MB".format(name=self._name, id=self._id, old_exec=self._exec_area, new_exec=exec_area)) self._exec_area = exec_area @property def disk0(self): """ Returns the size (MB) for PCMCIA disk0. :returns: disk0 size (integer) """ return self._disk0 @disk0.setter def disk0(self, disk0): """ Sets the size (MB) for PCMCIA disk0. :param disk0: disk0 size (integer) """ self._hypervisor.send("vm set_disk0 {name} {disk0}".format(name=self._name, disk0=disk0)) log.info("router {name} [id={id}]: disk0 updated from {old_disk0}MB to {new_disk0}MB".format(name=self._name, id=self._id, old_disk0=self._disk0, new_disk0=disk0)) self._disk0 = disk0 @property def disk1(self): """ Returns the size (MB) for PCMCIA disk1. :returns: disk1 size (integer) """ return self._disk1 @disk1.setter def disk1(self, disk1): """ Sets the size (MB) for PCMCIA disk1. :param disk1: disk1 size (integer) """ self._hypervisor.send("vm set_disk1 {name} {disk1}".format(name=self._name, disk1=disk1)) log.info("router {name} [id={id}]: disk1 updated from {old_disk1}MB to {new_disk1}MB".format(name=self._name, id=self._id, old_disk1=self._disk1, new_disk1=disk1)) self._disk1 = disk1 @property def confreg(self): """ Returns the configuration register. The default is 0x2102. :returns: configuration register value (string) """ return self._confreg @confreg.setter def confreg(self, confreg): """ Sets the configuration register. :param confreg: configuration register value (string) """ self._hypervisor.send("vm set_conf_reg {name} {confreg}".format(name=self._name, confreg=confreg)) log.info("router {name} [id={id}]: confreg updated from {old_confreg} to {new_confreg}".format(name=self._name, id=self._id, old_confreg=self._confreg, new_confreg=confreg)) self._confreg = confreg @property def console(self): """ Returns the TCP console port. :returns: console port (integer) """ return self._console @console.setter def console(self, console): """ Sets the TCP console port. :param console: console port (integer) """ if console == self._console: return if console in self._allocated_console_ports: raise DynamipsError("Console port {} is already used by another router".format(console)) self._hypervisor.send("vm set_con_tcp_port {name} {console}".format(name=self._name, console=console)) log.info("router {name} [id={id}]: console port updated from {old_console} to {new_console}".format(name=self._name, id=self._id, old_console=self._console, new_console=console)) self._allocated_console_ports.remove(self._console) self._console = console self._allocated_console_ports.append(self._console) @property def aux(self): """ Returns the TCP auxiliary port. :returns: console auxiliary port (integer) """ return self._aux @aux.setter def aux(self, aux): """ Sets the TCP auxiliary port. :param aux: console auxiliary port (integer) """ if aux == self._aux: return if aux in self._allocated_aux_ports: raise DynamipsError("Auxiliary console port {} is already used by another router".format(aux)) self._hypervisor.send("vm set_aux_tcp_port {name} {aux}".format(name=self._name, aux=aux)) log.info("router {name} [id={id}]: aux port updated from {old_aux} to {new_aux}".format(name=self._name, id=self._id, old_aux=self._aux, new_aux=aux)) self._allocated_aux_ports.remove(self._aux) self._aux = aux self._allocated_aux_ports.append(self._aux) def get_cpu_info(self, cpu_id=0): """ Shows info about the CPU identified by cpu_id. The boot CPU (which is typically the only CPU) has ID 0. :returns: ? (could not test) """ # FIXME: nothing returned by Dynamips. return self._hypervisor.send("vm cpu_info {name} {cpu_id}".format(name=self._name, cpu_id=cpu_id)) def get_cpu_usage(self, cpu_id=0): """ Shows cpu usage in seconds, "cpu_id" is ignored. :returns: cpu usage in seconds """ return int(self._hypervisor.send("vm cpu_usage {name} {cpu_id}".format(name=self._name, cpu_id=cpu_id))[0]) def send_console_msg(self, message): """ Sends a message to the console. :param message: message to send to the console """ self._hypervisor.send("vm send_con_msg {name} {message}".format(name=self._name, message=message)) def send_aux_msg(self, message): """ Sends a message to the auxiliary console. :param message: message to send to the auxiliary console """ self._hypervisor.send("vm send_aux_msg {name} {message}".format(name=self._name, message=message)) @property def mac_addr(self): """ Returns the MAC address. :returns: the MAC address (hexadecimal format: hh:hh:hh:hh:hh:hh) """ return self._mac_addr @mac_addr.setter def mac_addr(self, mac_addr): """ Sets the MAC address. :param mac_addr: a MAC address (hexadecimal format: hh:hh:hh:hh:hh:hh) """ self._hypervisor.send("{platform} set_mac_addr {name} {mac_addr}".format(platform=self._platform, name=self._name, mac_addr=mac_addr)) log.info("router {name} [id={id}]: MAC address updated from {old_mac} to {new_mac}".format(name=self._name, id=self._id, old_mac=self._mac_addr, new_mac=mac_addr)) self._mac_addr = mac_addr @property def system_id(self): """ Returns the system ID. :returns: the system ID (also called board processor ID) """ return self._system_id @system_id.setter def system_id(self, system_id): """ Sets the system ID. :param system_id: a system ID (also called board processor ID) """ self._hypervisor.send("{platform} set_system_id {name} {system_id}".format(platform=self._platform, name=self._name, system_id=system_id)) log.info("router {name} [id={id}]: system ID updated from {old_id} to {new_id}".format(name=self._name, id=self._id, old_id=self._system_id, new_id=system_id)) self._system_id = system_id def get_hardware_info(self): """ Get some hardware info about this router. :returns: ? (could not test) """ # FIXME: nothing returned by Dynamips. return (self._hypervisor.send("{platform} show_hardware {name}".format(platform=self._platform, name=self._name))) def get_cpu_usage(self): """ Returns the CPU usage. :return: CPU usage in percent """ return int(self._hypervisor.send("vm cpu_usage {name} 0".format(name=self._name))[0]) def get_slot_bindings(self): """ Returns slot bindings. :returns: slot bindings (adapter names) list """ return self._hypervisor.send("vm slot_bindings {}".format(self._name)) def slot_add_binding(self, slot_id, adapter): """ Adds a slot binding (a module into a slot). :param slot_id: slot ID :param adapter: device to add in the corresponding slot """ try: slot = self._slots[slot_id] except IndexError: raise DynamipsError("Slot {slot_id} doesn't exist on router {name}".format(name=self._name, slot_id=slot_id)) if slot is not None: current_adapter = slot raise DynamipsError("Slot {slot_id} is already occupied by adapter {adapter} on router {name}".format(name=self._name, slot_id=slot_id, adapter=current_adapter)) # Only c7200, c3600 and c3745 (NM-4T only) support new adapter while running if self.is_running() and not ((self._platform == 'c7200' and not str(adapter).startswith('C7200')) and not (self._platform == 'c3600' and self.chassis == '3660') and not (self._platform == 'c3745' and adapter == 'NM-4T')): raise DynamipsError("Adapter {adapter} cannot be added while router {name} is running".format(adapter=adapter, name=self._name)) self._hypervisor.send("vm slot_add_binding {name} {slot_id} 0 {adapter}".format(name=self._name, slot_id=slot_id, adapter=adapter)) log.info("router {name} [id={id}]: adapter {adapter} inserted into slot {slot_id}".format(name=self._name, id=self._id, adapter=adapter, slot_id=slot_id)) self._slots[slot_id] = adapter # Generate an OIR event if the router is running if self.is_running(): self._hypervisor.send("vm slot_oir_start {name} {slot_id} 0".format(name=self._name, slot_id=slot_id)) log.info("router {name} [id={id}]: OIR start event sent to slot {slot_id}".format(name=self._name, id=self._id, slot_id=slot_id)) def slot_remove_binding(self, slot_id): """ Removes a slot binding (a module from a slot). :param slot_id: slot ID """ try: adapter = self._slots[slot_id] except IndexError: raise DynamipsError("Slot {slot_id} doesn't exist on router {name}".format(name=self._name, slot_id=slot_id)) if adapter is None: raise DynamipsError("No adapter in slot {slot_id} on router {name}".format(name=self._name, slot_id=slot_id)) # Only c7200, c3600 and c3745 (NM-4T only) support to remove adapter while running if self.is_running() and not ((self._platform == 'c7200' and not str(adapter).startswith('C7200')) and not (self._platform == 'c3600' and self.chassis == '3660') and not (self._platform == 'c3745' and adapter == 'NM-4T')): raise DynamipsError("Adapter {adapter} cannot be removed while router {name} is running".format(adapter=adapter, name=self._name)) # Generate an OIR event if the router is running if self.is_running(): self._hypervisor.send("vm slot_oir_stop {name} {slot_id} 0".format(name=self._name, slot_id=slot_id)) log.info("router {name} [id={id}]: OIR stop event sent to slot {slot_id}".format(name=self._name, id=self._id, slot_id=slot_id)) self._hypervisor.send("vm slot_remove_binding {name} {slot_id} 0".format(name=self._name, slot_id=slot_id)) log.info("router {name} [id={id}]: adapter {adapter} removed from slot {slot_id}".format(name=self._name, id=self._id, adapter=adapter, slot_id=slot_id)) self._slots[slot_id] = None def install_wic(self, wic_slot_id, wic): """ Installs a WIC adapter into this router. :param wic_slot_id: WIC slot ID :param wic: WIC to be installed """ # WICs are always installed on adapters in slot 0 slot_id = 0 # Do not check if slot has an adapter because adapters with WICs interfaces # must be inserted by default in the router and cannot be removed. adapter = self._slots[slot_id] if wic_slot_id > len(adapter.wics) - 1: raise DynamipsError("WIC slot {wic_slot_id} doesn't exist".format(name=self._name, wic_slot_id=wic_slot_id)) if not adapter.wic_slot_available(wic_slot_id): raise DynamipsError("WIC slot {wic_slot_id} is already occupied by another WIC".format(name=self._name, wic_slot_id=wic_slot_id)) # Dynamips WICs slot IDs start on a multiple of 16 # WIC1 = 16, WIC2 = 32 and WIC3 = 48 internal_wic_slot_id = 16 * (wic_slot_id + 1) self._hypervisor.send("vm slot_add_binding {name} {slot_id} {wic_slot_id} {wic}".format(name=self._name, slot_id=slot_id, wic_slot_id=internal_wic_slot_id, wic=wic)) log.info("router {name} [id={id}]: {wic} inserted into WIC slot {wic_slot_id}".format(name=self._name, id=self._id, wic=wic, wic_slot_id=wic_slot_id)) adapter.install_wic(wic_slot_id, wic) def uninstall_wic(self, wic_slot_id): """ Uninstalls a WIC adapter from this router. :param wic_slot_id: WIC slot ID """ # WICs are always installed on adapters in slot 0 slot_id = 0 # Do not check if slot has an adapter because adapters with WICs interfaces # must be inserted by default in the router and cannot be removed. adapter = self._slots[slot_id] if wic_slot_id > len(adapter.wics) - 1: raise DynamipsError("WIC slot {wic_slot_id} doesn't exist".format(name=self._name, wic_slot_id=wic_slot_id)) if adapter.wic_slot_available(wic_slot_id): raise DynamipsError("No WIC is installed in WIC slot {wic_slot_id}".format(name=self._name, wic_slot_id=wic_slot_id)) # Dynamips WICs slot IDs start on a multiple of 16 # WIC1 = 16, WIC2 = 32 and WIC3 = 48 internal_wic_slot_id = 16 * (wic_slot_id + 1) self._hypervisor.send("vm slot_remove_binding {name} {slot_id} {wic_slot_id}".format(name=self._name, slot_id=slot_id, wic_slot_id=internal_wic_slot_id)) log.info("router {name} [id={id}]: {wic} removed from WIC slot {wic_slot_id}".format(name=self._name, id=self._id, wic=adapter.wics[wic_slot_id], wic_slot_id=wic_slot_id)) adapter.uninstall_wic(wic_slot_id) def get_slot_nio_bindings(self, slot_id): """ Returns slot NIO bindings. :param slot_id: slot ID :returns: list of NIO bindings """ return (self._hypervisor.send("vm slot_nio_bindings {name} {slot_id}".format(name=self._name, slot_id=slot_id))) def slot_add_nio_binding(self, slot_id, port_id, nio): """ Adds a slot NIO binding. :param slot_id: slot ID :param port_id: port ID :param nio: NIO instance to add to the slot/port """ try: adapter = self._slots[slot_id] except IndexError: raise DynamipsError("Slot {slot_id} doesn't exist on router {name}".format(name=self._name, slot_id=slot_id)) if not adapter.port_exists(port_id): raise DynamipsError("Port {port_id} doesn't exist in adapter {adapter}".format(adapter=adapter, port_id=port_id)) self._hypervisor.send("vm slot_add_nio_binding {name} {slot_id} {port_id} {nio}".format(name=self._name, slot_id=slot_id, port_id=port_id, nio=nio)) log.info("router {name} [id={id}]: NIO {nio_name} bound to port {slot_id}/{port_id}".format(name=self._name, id=self._id, nio_name=nio.name, slot_id=slot_id, port_id=port_id)) self.slot_enable_nio(slot_id, port_id) adapter.add_nio(port_id, nio) def slot_remove_nio_binding(self, slot_id, port_id): """ Removes a slot NIO binding. :param slot_id: slot ID :param port_id: port ID :returns: removed NIO instance """ try: adapter = self._slots[slot_id] except IndexError: raise DynamipsError("Slot {slot_id} doesn't exist on router {name}".format(name=self._name, slot_id=slot_id)) if not adapter.port_exists(port_id): raise DynamipsError("Port {port_id} doesn't exist in adapter {adapter}".format(adapter=adapter, port_id=port_id)) self.slot_disable_nio(slot_id, port_id) self._hypervisor.send("vm slot_remove_nio_binding {name} {slot_id} {port_id}".format(name=self._name, slot_id=slot_id, port_id=port_id)) nio = adapter.get_nio(port_id) adapter.remove_nio(port_id) log.info("router {name} [id={id}]: NIO {nio_name} removed from port {slot_id}/{port_id}".format(name=self._name, id=self._id, nio_name=nio.name, slot_id=slot_id, port_id=port_id)) return nio def slot_enable_nio(self, slot_id, port_id): """ Enables a slot NIO binding. :param slot_id: slot ID :param port_id: port ID """ if self.is_running(): # running router self._hypervisor.send("vm slot_enable_nio {name} {slot_id} {port_id}".format(name=self._name, slot_id=slot_id, port_id=port_id)) log.info("router {name} [id={id}]: NIO enabled on port {slot_id}/{port_id}".format(name=self._name, id=self._id, slot_id=slot_id, port_id=port_id)) def slot_disable_nio(self, slot_id, port_id): """ Disables a slot NIO binding. :param slot_id: slot ID :param port_id: port ID """ if self.is_running(): # running router self._hypervisor.send("vm slot_disable_nio {name} {slot_id} {port_id}".format(name=self._name, slot_id=slot_id, port_id=port_id)) log.info("router {name} [id={id}]: NIO disabled on port {slot_id}/{port_id}".format(name=self._name, id=self._id, slot_id=slot_id, port_id=port_id)) def start_capture(self, slot_id, port_id, output_file, data_link_type="DLT_EN10MB"): """ Starts a packet capture. :param slot_id: slot ID :param port_id: port ID :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._slots[slot_id] except IndexError: raise DynamipsError("Slot {slot_id} doesn't exist on router {name}".format(name=self._name, slot_id=slot_id)) if not adapter.port_exists(port_id): raise DynamipsError("Port {port_id} doesn't exist in adapter {adapter}".format(adapter=adapter, port_id=port_id)) data_link_type = data_link_type.lower() if data_link_type.startswith("dlt_"): data_link_type = data_link_type[4:] nio = adapter.get_nio(port_id) if nio.input_filter[0] is not None and nio.output_filter[0] is not None: raise DynamipsError("Port {port_id} has already a filter applied on {adapter}".format(adapter=adapter, port_id=port_id)) try: os.makedirs(os.path.dirname(output_file)) except FileExistsError: pass except OSError as e: raise DynamipsError("Could not create captures directory {}".format(e)) nio.bind_filter("both", "capture") nio.setup_filter("both", '{} "{}"'.format(data_link_type, output_file)) log.info("router {name} [id={id}]: starting packet capture on port {slot_id}/{port_id}".format(name=self._name, id=self._id, nio_name=nio.name, slot_id=slot_id, port_id=port_id)) def stop_capture(self, slot_id, port_id): """ Stops a packet capture. :param slot_id: slot ID :param port_id: port ID """ try: adapter = self._slots[slot_id] except IndexError: raise DynamipsError("Slot {slot_id} doesn't exist on router {name}".format(name=self._name, slot_id=slot_id)) if not adapter.port_exists(port_id): raise DynamipsError("Port {port_id} doesn't exist in adapter {adapter}".format(adapter=adapter, port_id=port_id)) nio = adapter.get_nio(port_id) nio.unbind_filter("both") log.info("router {name} [id={id}]: stopping packet capture on port {slot_id}/{port_id}".format(name=self._name, id=self._id, nio_name=nio.name, slot_id=slot_id, port_id=port_id)) def _create_slots(self, numslots): """ Creates the appropriate number of slots for this router. :param numslots: number of slots to create """ self._slots = numslots * [None] @property def slots(self): """ Returns the slots for this router. :return: slot list """ return self._slots