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#!/usr/bin/env python2
# -*- coding: utf-8 -*-
# TRX Toolkit
# Auxiliary tool to generate and send random bursts via TRX DATA
# interface, which may be useful for fuzzing and testing
#
# (C) 2017-2018 by Vadim Yanitskiy <axilirator@gmail.com>
#
# All Rights Reserved
#
# 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 2 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, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
from copyright import print_copyright
CR_HOLDERS = [("2017-2018", "Vadim Yanitskiy <axilirator@gmail.com>")]
import signal
import getopt
import sys
from rand_burst_gen import RandBurstGen
from data_dump import DATADumpFile
from data_if import DATAInterface
from gsm_shared import *
from data_msg import *
class Application:
# Application variables
remote_addr = "127.0.0.1"
bind_addr = "0.0.0.0"
base_port = 5700
conn_mode = "TRX"
output_file = None
burst_type = None
burst_count = 1
# Common header fields
fn = None
tn = None
# Message specific header fields
toa256 = None
rssi = None
pwr = None
def __init__(self):
print_copyright(CR_HOLDERS)
self.parse_argv()
self.check_argv()
# Set up signal handlers
signal.signal(signal.SIGINT, self.sig_handler)
# Open requested capture file
if self.output_file is not None:
self.ddf = DATADumpFile(self.output_file)
def run(self):
# Init DATA interface with TRX or L1
if self.conn_mode == "TRX":
self.data_if = DATAInterface(self.remote_addr, self.base_port + 2,
self.bind_addr, self.base_port + 102)
elif self.conn_mode == "L1":
self.data_if = DATAInterface(self.remote_addr, self.base_port + 102,
self.bind_addr, self.base_port + 2)
# Init random burst generator
burst_gen = RandBurstGen()
# Init an empty DATA message
if self.conn_mode == "TRX":
msg = DATAMSG_L12TRX()
elif self.conn_mode == "L1":
msg = DATAMSG_TRX2L1()
# Generate a random frame number or use provided one
fn_init = msg.rand_fn() if self.fn is None else self.fn
# Send as much bursts as required
for i in range(self.burst_count):
# Randomize the message header
msg.rand_hdr()
# Increase and set frame number
msg.fn = (fn_init + i) % GSM_HYPERFRAME
# Set timeslot number
if self.tn is not None:
msg.tn = self.tn
# Set transmit power level
if self.pwr is not None:
msg.pwr = self.pwr
# Set time of arrival
if self.toa256 is not None:
msg.toa256 = self.toa256
# Set RSSI
if self.rssi is not None:
msg.rssi = self.rssi
# Generate a random burst
if self.burst_type == "NB":
burst = burst_gen.gen_nb()
elif self.burst_type == "FB":
burst = burst_gen.gen_fb()
elif self.burst_type == "SB":
burst = burst_gen.gen_sb()
elif self.burst_type == "AB":
burst = burst_gen.gen_ab()
# Convert to soft-bits in case of TRX -> L1 message
if self.conn_mode == "L1":
burst = msg.ubit2sbit(burst)
# Set burst
msg.burst = burst
print("[i] Sending %d/%d %s burst %s to %s..."
% (i + 1, self.burst_count, self.burst_type,
msg.desc_hdr(), self.conn_mode))
# Send message
self.data_if.send_msg(msg)
# Append a new message to the capture
if self.output_file is not None:
self.ddf.append_msg(msg)
def print_help(self, msg = None):
s = " Usage: " + sys.argv[0] + " [options]\n\n" \
" Some help...\n" \
" -h --help this text\n\n"
s += " TRX interface specific\n" \
" -o --output-file Write bursts to a capture file\n" \
" -m --conn-mode Send bursts to: TRX (default) / L1\n" \
" -r --remote-addr Set remote address (default %s)\n" \
" -b --bind-addr Set local address (default %s)\n" \
" -p --base-port Set base port number (default %d)\n\n"
s += " Burst generation\n" \
" -b --burst-type Random burst type (NB, FB, SB, AB)\n" \
" -c --burst-count How much bursts to send (default 1)\n" \
" -f --frame-number Set frame number (default random)\n" \
" -t --timeslot Set timeslot index (default random)\n" \
" --pwr Set power level (default random)\n" \
" --rssi Set RSSI (default random)\n" \
" --toa Set ToA in symbols (default random)\n" \
" --toa256 Set ToA in 1/256 symbol periods\n"
print(s % (self.remote_addr, self.bind_addr, self.base_port))
if msg is not None:
print(msg)
def parse_argv(self):
try:
opts, args = getopt.getopt(sys.argv[1:],
"o:m:r:b:p:b:c:f:t:h",
[
"help",
"output-file="
"conn-mode=",
"remote-addr=",
"bind-addr=",
"base-port=",
"burst-type=",
"burst-count=",
"frame-number=",
"timeslot=",
"rssi=",
"toa=",
"toa256=",
"pwr=",
])
except getopt.GetoptError as err:
self.print_help("[!] " + str(err))
sys.exit(2)
for o, v in opts:
if o in ("-h", "--help"):
self.print_help()
sys.exit(2)
elif o in ("-o", "--output-file"):
self.output_file = v
elif o in ("-m", "--conn-mode"):
self.conn_mode = v
elif o in ("-r", "--remote-addr"):
self.remote_addr = v
elif o in ("-b", "--bind-addr"):
self.bind_addr = v
elif o in ("-p", "--base-port"):
self.base_port = int(v)
elif o in ("-b", "--burst-type"):
self.burst_type = v
elif o in ("-c", "--burst-count"):
self.burst_count = int(v)
elif o in ("-f", "--frame-number"):
self.fn = int(v)
elif o in ("-t", "--timeslot"):
self.tn = int(v)
# Message specific header fields
elif o == "--pwr":
self.pwr = int(v)
elif o == "--rssi":
self.rssi = int(v)
elif o == "--toa256":
self.toa256 = int(v)
elif o == "--toa":
self.toa256 = int(float(v) * 256.0 + 0.5)
def check_argv(self):
# Check connection mode
if self.conn_mode not in ("TRX", "L1"):
self.print_help("[!] Unknown connection type")
sys.exit(2)
# Check connection mode
if self.burst_type not in ("NB", "FB", "SB", "AB"):
self.print_help("[!] Unknown burst type")
sys.exit(2)
def sig_handler(self, signum, frame):
print("Signal %d received" % signum)
if signum is signal.SIGINT:
sys.exit(0)
if __name__ == '__main__':
app = Application()
app.run()
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