#!/usr/bin/env python # -*- coding: utf-8 -*- """ Dan Klein, Itay Marom Cisco Systems, Inc. Copyright (c) 2015-2015 Cisco Systems, Inc. Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. """ from __future__ import print_function import subprocess import cmd import json import ast import argparse import random import readline import string import os import sys import tty, termios from threading import Lock import threading try: import stl_path except: from . import stl_path from trex_stl_lib.api import * from trex_stl_lib.utils.text_opts import * from trex_stl_lib.utils.common import user_input, get_current_user, set_window_always_on_top from trex_stl_lib.utils import parsing_opts from .trex_capture import CaptureManager try: import trex_tui except: from . import trex_tui from functools import wraps __version__ = "2.0" # console custom logger class ConsoleLogger(LoggerApi): def __init__ (self): self.prompt_redraw = None def write (self, msg, newline = True): if newline: print(msg) else: print(msg, end=' ') def flush (self): sys.stdout.flush() # override this for the prompt fix def async_log (self, msg, level = LoggerApi.VERBOSE_REGULAR, newline = True): self.log(msg, level, newline) if ( (self.level >= LoggerApi.VERBOSE_REGULAR) and self.prompt_redraw ): self.prompt_redraw() self.flush() class TRexGeneralCmd(cmd.Cmd): def __init__(self): cmd.Cmd.__init__(self) # configure history behaviour self._history_file_dir = "/tmp/trex/console/" self._history_file = self.get_history_file_full_path() readline.set_history_length(100) # load history, if any self.load_console_history() def get_console_identifier(self): return self.__class__.__name__ def get_history_file_full_path(self): return "{dir}{filename}.hist".format(dir=self._history_file_dir, filename=self.get_console_identifier()) def load_console_history(self): if os.path.exists(self._history_file): readline.read_history_file(self._history_file) return def save_console_history(self): if not os.path.exists(self._history_file_dir): # make the directory available for every user try: original_umask = os.umask(0) os.makedirs(self._history_file_dir, mode = 0o777) finally: os.umask(original_umask) # os.mknod(self._history_file) readline.write_history_file(self._history_file) return def print_history (self): length = readline.get_current_history_length() for i in range(1, length + 1): cmd = readline.get_history_item(i) print("{:<5} {:}".format(i, cmd)) def get_history_item (self, index): length = readline.get_current_history_length() if index > length: print(format_text("please select an index between {0} and {1}".format(0, length))) return None return readline.get_history_item(index) def emptyline(self): """Called when an empty line is entered in response to the prompt. This overriding is such that when empty line is passed, **nothing happens**. """ return def completenames(self, text, *ignored): """ This overriding is such that a space is added to name completion. """ dotext = 'do_'+text return [a[3:]+' ' for a in self.get_names() if a.startswith(dotext)] # # main console object class TRexConsole(TRexGeneralCmd): """Trex Console""" def __init__(self, stateless_client, verbose = False): # cmd lock is used to make sure background job # of the console is not done while the user excutes commands self.cmd_lock = Lock() self.stateless_client = stateless_client TRexGeneralCmd.__init__(self) self.tui = trex_tui.TrexTUI(stateless_client) self.terminal = None self.verbose = verbose self.intro = "\n-=TRex Console v{ver}=-\n".format(ver=__version__) self.intro += "\nType 'help' or '?' for supported actions\n" self.cap_mngr = CaptureManager(stateless_client, self.cmd_lock) self.postcmd(False, "") ################### internal section ######################## def prompt_redraw (self): self.postcmd(False, "") sys.stdout.write("\n" + self.prompt + readline.get_line_buffer()) sys.stdout.flush() def verify_connected(f): @wraps(f) def wrap(*args): inst = args[0] func_name = f.__name__ if func_name.startswith("do_"): func_name = func_name[3:] if not inst.stateless_client.is_connected(): print(format_text("\n'{0}' cannot be executed on offline mode\n".format(func_name), 'bold')) return ret = f(*args) return ret return wrap def get_console_identifier(self): return "{context}_{server}".format(context=get_current_user(), server=self.stateless_client.get_connection_info()['server']) def register_main_console_methods(self): main_names = set(self.trex_console.get_names()).difference(set(dir(self.__class__))) for name in main_names: for prefix in 'do_', 'help_', 'complete_': if name.startswith(prefix): self.__dict__[name] = getattr(self.trex_console, name) def precmd(self, line): # before doing anything, save history snapshot of the console # this is done before executing the command in case of ungraceful application exit self.save_console_history() lines = line.split(';') try: self.cmd_lock.acquire() for line in lines: stop = self.onecmd(line) stop = self.postcmd(stop, line) if stop: return "quit" return "" except STLError as e: print(e) return '' finally: self.cmd_lock.release() def postcmd(self, stop, line): self.prompt = self.stateless_client.generate_prompt(prefix = 'trex') return stop def default(self, line): print("'{0}' is an unrecognized command. type 'help' or '?' for a list\n".format(line)) @staticmethod def tree_autocomplete(text): dir = os.path.dirname(text) if dir: path = dir else: path = "." start_string = os.path.basename(text) targets = [] for x in os.listdir(path): if x.startswith(start_string): y = os.path.join(path, x) if os.path.isfile(y): targets.append(x + ' ') elif os.path.isdir(y): targets.append(x + '/') return targets ####################### shell commands ####################### @verify_connected def do_ping (self, line): '''Ping the server\n''' self.stateless_client.ping_line(line) @verify_connected def do_shutdown (self, line): '''Sends the server a shutdown request\n''' self.stateless_client.shutdown_line(line) # set verbose on / off def do_verbose(self, line): '''Shows or set verbose mode\n''' if line == "": print("\nverbose is " + ("on\n" if self.verbose else "off\n")) elif line == "on": self.verbose = True self.stateless_client.set_verbose("high") print(format_text("\nverbose set to on\n", 'green', 'bold')) elif line == "off": self.verbose = False self.stateless_client.set_verbose("normal") print(format_text("\nverbose set to off\n", 'green', 'bold')) else: print(format_text("\nplease specify 'on' or 'off'\n", 'bold')) # show history def help_history (self): self.do_history("-h") def do_shell (self, line): self.do_history(line) @verify_connected def do_push (self, line): '''Push a local PCAP file\n''' self.stateless_client.push_line(line) def help_push (self): self.do_push("-h") @verify_connected def do_portattr (self, line): '''Change/show port(s) attributes\n''' self.stateless_client.set_port_attr_line(line) def help_portattr (self): self.do_portattr("-h") @verify_connected def do_l2 (self, line): '''Configures a port in L2 mode''' self.stateless_client.set_l2_mode_line(line) def help_l2 (self): self.do_l2("-h") @verify_connected def do_l3 (self, line): '''Configures a port in L3 mode''' self.stateless_client.set_l3_mode_line(line) def help_l3 (self): self.do_l3("-h") @verify_connected def do_capture (self, line): '''Manage PCAP captures''' self.cap_mngr.parse_line(line) def help_capture (self): self.do_capture("-h") @verify_connected def do_resolve (self, line): '''Resolve ARP for ports''' self.stateless_client.resolve_line(line) @verify_connected def do_scan6(self, line): '''Search for IPv6 neighbors''' self.stateless_client.scan6_line(line) def help_resolve (self): self.do_resolve("-h") do_arp = do_resolve help_arp = help_resolve @verify_connected def do_map (self, line): '''Maps ports topology\n''' ports = self.stateless_client.get_acquired_ports() if not ports: print("No ports acquired\n") return try: with self.stateless_client.logger.supress(): table = stl_map_ports(self.stateless_client, ports = ports) except STLError as e: print(format_text(e.brief() + "\n", 'bold')) return print(format_text('\nAcquired ports topology:\n', 'bold', 'underline')) # bi-dir ports print(format_text('Bi-directional ports:\n','underline')) for port_a, port_b in table['bi']: print("port {0} <--> port {1}".format(port_a, port_b)) print("") # unknown ports print(format_text('Mapping unknown:\n','underline')) for port in table['unknown']: print("port {0}".format(port)) print("") def do_history (self, line): '''Manage the command history\n''' item = parsing_opts.ArgumentPack(['item'], {"nargs": '?', 'metavar': 'item', 'type': parsing_opts.check_negative, 'help': "an history item index", 'default': 0}) parser = parsing_opts.gen_parser(self.stateless_client, "history", self.do_history.__doc__, item) opts = parser.parse_args(line.split()) if opts is None: return if opts.item == 0: self.print_history() else: cmd = self.get_history_item(opts.item) if cmd == None: return print("Executing '{0}'".format(cmd)) return self.onecmd(cmd) ############### connect def do_connect (self, line): '''Connects to the server and acquire ports\n''' self.stateless_client.connect_line(line) def help_connect (self): self.do_connect("-h") def do_disconnect (self, line): '''Disconnect from the server\n''' # stop any monitors before disconnecting self.cap_mngr.stop() self.stateless_client.disconnect_line(line) @verify_connected def do_acquire (self, line): '''Acquire ports\n''' self.stateless_client.acquire_line(line) @verify_connected def do_release (self, line): '''Release ports\n''' self.stateless_client.release_line(line) @verify_connected def do_reacquire (self, line): '''reacquire all the ports under your logged user name''' self.stateless_client.reacquire_line(line) def help_acquire (self): self.do_acquire("-h") def help_release (self): self.do_release("-h") def help_reacquire (self): self.do_reacquire("-h") ############### start def complete_start(self, text, line, begidx, endidx): s = line.split() l = len(s) file_flags = parsing_opts.get_flags(parsing_opts.FILE_PATH) if (l > 1) and (s[l - 1] in file_flags): return TRexConsole.tree_autocomplete("") if (l > 2) and (s[l - 2] in file_flags): return TRexConsole.tree_autocomplete(s[l - 1]) complete_push = complete_start @verify_connected def do_start(self, line): '''Start selected traffic in specified port(s) on TRex\n''' self.stateless_client.start_line(line) def help_start(self): self.do_start("-h") ############# stop @verify_connected def do_stop(self, line): '''stops port(s) transmitting traffic\n''' self.stateless_client.stop_line(line) def help_stop(self): self.do_stop("-h") ############# update @verify_connected def do_update(self, line): '''update speed of port(s) currently transmitting traffic\n''' self.stateless_client.update_line(line) def help_update (self): self.do_update("-h") ############# pause @verify_connected def do_pause(self, line): '''pause port(s) transmitting traffic\n''' self.stateless_client.pause_line(line) ############# resume @verify_connected def do_resume(self, line): '''resume port(s) transmitting traffic\n''' self.stateless_client.resume_line(line) ########## reset @verify_connected def do_reset (self, line): '''force stop all ports\n''' self.stateless_client.reset_line(line) ######### validate @verify_connected def do_validate (self, line): '''validates port(s) stream configuration\n''' self.stateless_client.validate_line(line) @verify_connected def do_stats(self, line): '''Fetch statistics from TRex server by port\n''' self.stateless_client.show_stats_line(line) def help_stats(self): self.do_stats("-h") @verify_connected def do_streams(self, line): '''Fetch statistics from TRex server by port\n''' self.stateless_client.show_streams_line(line) def help_streams(self): self.do_streams("-h") @verify_connected def do_clear(self, line): '''Clear cached local statistics\n''' self.stateless_client.clear_stats_line(line) @verify_connected def do_service (self, line): '''Sets port(s) service mode state''' self.stateless_client.service_line(line) def help_service (self, line): self.do_service("-h") @verify_connected def do_pkt (self, line): '''Sends a scapy notation packet''' self.stateless_client.pkt_line(line) def help_pkt (self, line): self.do_pkt("-h") def help_clear(self): self.do_clear("-h") def help_events (self): self.do_events("-h") def do_events (self, line): '''shows events recieved from server\n''' self.stateless_client.get_events_line(line) def complete_profile(self, text, line, begidx, endidx): return self.complete_start(text,line, begidx, endidx) def do_profile (self, line): '''shows information about a profile''' self.stateless_client.show_profile_line(line) # tui @verify_connected def do_tui (self, line): '''Shows a graphical console\n''' parser = parsing_opts.gen_parser(self.stateless_client, "tui", self.do_tui.__doc__, parsing_opts.XTERM, parsing_opts.LOCKED) opts = parser.parse_args(line.split()) if not opts: return opts if opts.xterm: if not os.path.exists('/usr/bin/xterm'): print(format_text("XTERM does not exists on this machine", 'bold')) return info = self.stateless_client.get_connection_info() exe = './trex-console --top -t -q -s {0} -p {1} --async_port {2}'.format(info['server'], info['sync_port'], info['async_port']) cmd = ['/usr/bin/xterm', '-geometry', '{0}x{1}'.format(self.tui.MIN_COLS, self.tui.MIN_ROWS), '-sl', '0', '-title', 'trex_tui', '-e', exe] # detach child self.terminal = subprocess.Popen(cmd, preexec_fn = os.setpgrp) return try: with self.stateless_client.logger.supress(): self.tui.show(self.stateless_client, self.save_console_history, locked = opts.locked) except self.tui.ScreenSizeException as e: print(format_text(str(e) + "\n", 'bold')) def help_tui (self): do_tui("-h") # quit function def do_quit(self, line): '''Exit the client\n''' return True def do_help (self, line): '''Shows This Help Screen\n''' if line: try: func = getattr(self, 'help_' + line) except AttributeError: try: doc = getattr(self, 'do_' + line).__doc__ if doc: self.stdout.write("%s\n"%str(doc)) return except AttributeError: pass self.stdout.write("%s\n"%str(self.nohelp % (line,))) return func() return print("\nSupported Console Commands:") print("----------------------------\n") cmds = [x[3:] for x in self.get_names() if x.startswith("do_")] hidden = ['EOF', 'q', 'exit', 'h', 'shell'] for cmd in cmds: if cmd in hidden: continue try: doc = getattr(self, 'do_' + cmd).__doc__ if doc: help = str(doc) else: help = "*** Undocumented Function ***\n" except AttributeError: help = "*** Undocumented Function ***\n" l=help.splitlines() print("{:<30} {:<30}".format(cmd + " - ",l[0] )) # a custorm cmdloop wrapper def start(self): try: while True: try: self.cmdloop() break except KeyboardInterrupt as e: if not readline.get_line_buffer(): raise KeyboardInterrupt else: print("") self.intro = None continue finally: # capture manager is not presistent - kill it before going out self.cap_mngr.stop() if self.terminal: self.terminal.kill() # aliases do_exit = do_EOF = do_q = do_quit do_h = do_history # run a script of commands def run_script_file (self, filename, stateless_client): self.logger.log(format_text("\nRunning script file '{0}'...".format(filename), 'bold')) with open(filename) as f: script_lines = f.readlines() cmd_table = {} # register all the commands cmd_table['start'] = stateless_client.start_line cmd_table['stop'] = stateless_client.stop_line cmd_table['reset'] = stateless_client.reset_line for index, line in enumerate(script_lines, start = 1): line = line.strip() if line == "": continue if line.startswith("#"): continue sp = line.split(' ', 1) cmd = sp[0] if len(sp) == 2: args = sp[1] else: args = "" stateless_client.logger.log(format_text("Executing line {0} : '{1}'\n".format(index, line))) if not cmd in cmd_table: print("\n*** Error at line {0} : '{1}'\n".format(index, line)) stateless_client.logger.log(format_text("unknown command '{0}'\n".format(cmd), 'bold')) return False cmd_table[cmd](args) stateless_client.logger.log(format_text("\n[Done]", 'bold')) return True # def is_valid_file(filename): if not os.path.isfile(filename): raise argparse.ArgumentTypeError("The file '%s' does not exist" % filename) return filename def setParserOptions(): parser = argparse.ArgumentParser(prog="trex_console.py") parser.add_argument("-s", "--server", help = "TRex Server [default is localhost]", default = "localhost", type = str) parser.add_argument("-p", "--port", help = "TRex Server Port [default is 4501]\n", default = 4501, type = int) parser.add_argument("--async_port", help = "TRex ASync Publisher Port [default is 4500]\n", default = 4500, dest='pub', type = int) parser.add_argument("-u", "--user", help = "User Name [default is currently logged in user]\n", default = get_current_user(), type = str) parser.add_argument("-v", "--verbose", dest="verbose", action="store_true", help="Switch ON verbose option. Default is: OFF.", default = False) group = parser.add_mutually_exclusive_group() group.add_argument("-a", "--acquire", dest="acquire", nargs = '+', type = int, help="Acquire ports on connect. default is all available ports", default = None) group.add_argument("-r", "--readonly", dest="readonly", action="store_true", help="Starts console in a read only mode", default = False) parser.add_argument("-f", "--force", dest="force", action="store_true", help="Force acquire the requested ports", default = False) parser.add_argument("--batch", dest="batch", nargs = 1, type = is_valid_file, help = "Run the console in a batch mode with file", default = None) parser.add_argument("-t", "--tui", dest="tui", action="store_true", help="Starts with TUI mode", default = False) parser.add_argument("-x", "--xtui", dest="xtui", action="store_true", help="Starts with XTERM TUI mode", default = False) parser.add_argument("--top", dest="top", action="store_true", help="Set the window as always on top", default = False) parser.add_argument("-q", "--quiet", dest="quiet", action="store_true", help="Starts with all outputs suppressed", default = False) return parser # a simple info printed on log on def show_intro (logger, c): x = c.get_server_system_info() ver = c.get_server_version().get('version', 'N/A') # find out which NICs the server has port_types = {} for port in x['ports']: if 'supp_speeds' in port and port['supp_speeds']: speed = max(port['supp_speeds']) // 1000 else: speed = c.ports[port['index']].get_speed_gbps() key = (speed, port.get('description', port['driver'])) if key not in port_types: port_types[key] = 0 port_types[key] += 1 port_line = '' for k, v in port_types.items(): port_line += "{0} x {1}Gbps @ {2}\t".format(v, k[0], k[1]) logger.log(format_text("\nServer Info:\n", 'underline')) logger.log("Server version: {:>}".format(format_text(ver, 'bold'))) logger.log("Server CPU: {:>}".format(format_text("{:>} x {:>}".format(x.get('dp_core_count'), x.get('core_type')), 'bold'))) logger.log("Ports count: {:>}".format(format_text(port_line, 'bold'))) def main(): parser = setParserOptions() options = parser.parse_args() if options.xtui: options.tui = True # always on top if options.top: set_window_always_on_top('trex_tui') # Stateless client connection if options.quiet: verbose_level = LoggerApi.VERBOSE_QUIET elif options.verbose: verbose_level = LoggerApi.VERBOSE_HIGH else: verbose_level = LoggerApi.VERBOSE_REGULAR # Stateless client connection logger = ConsoleLogger() stateless_client = STLClient(username = options.user, server = options.server, sync_port = options.port, async_port = options.pub, verbose_level = verbose_level, logger = logger) # TUI or no acquire will give us READ ONLY mode try: stateless_client.connect() except STLError as e: logger.log("Log:\n" + format_text(e.brief() + "\n", 'bold')) return if not options.tui and not options.readonly: try: # acquire all ports stateless_client.acquire(options.acquire, force = options.force) except STLError as e: logger.log("Log:\n" + format_text(e.brief() + "\n", 'bold')) logger.log("\n*** Failed to acquire all required ports ***\n") return if options.readonly: logger.log(format_text("\nRead only mode - only few commands will be available", 'bold')) # console try: show_intro(logger, stateless_client) # a script mode if options.batch: cont = run_script_file(options.batch[0], stateless_client) if not cont: return console = TRexConsole(stateless_client, options.verbose) logger.prompt_redraw = console.prompt_redraw # TUI if options.tui: console.do_tui("-x" if options.xtui else "-l") else: console.start() except KeyboardInterrupt as e: print("\n\n*** Caught Ctrl + C... Exiting...\n\n") finally: with stateless_client.logger.supress(): stateless_client.disconnect(stop_traffic = False) if __name__ == '__main__': main()