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|
#!/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
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
from trex_stl_lib.utils import parsing_opts
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()
def set_window_always_on_top (title):
# we need the GDK module, if not available - ignroe this command
try:
if sys.version_info < (3,0):
from gtk import gdk
else:
#from gi.repository import Gdk as gdk
return
except ImportError:
return
# search the window and set it as above
root = gdk.get_default_root_window()
for id in root.property_get('_NET_CLIENT_LIST')[2]:
w = gdk.window_foreign_new(id)
if w:
name = w.property_get('WM_NAME')[2]
if name == title:
w.set_keep_above(True)
gdk.window_process_all_updates()
break
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):
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.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:
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 ''
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_set_rx_sniffer (self, line):
'''Sets a port sniffer on RX channel as PCAP recorder'''
self.stateless_client.set_rx_sniffer_line(line)
def help_sniffer (self):
self.do_set_rx_sniffer("-h")
@verify_connected
def do_resolve (self, line):
'''Resolve ARP for ports'''
self.stateless_client.resolve_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
with self.stateless_client.logger.supress():
table = stl_map_ports(self.stateless_client, ports = ports)
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'''
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")
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):
while True:
try:
self.cmdloop()
break
except KeyboardInterrupt as e:
if not readline.get_line_buffer():
raise KeyboardInterrupt
else:
print("")
self.intro = None
continue
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:
speed = max(port['supp_speeds']) // 1000
else:
speed = port['speed']
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'))
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
try:
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()
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