OsmocomBB MS-side GSM Protocol stack (L1, L2, L3) including firmware https://osmocom.org/projects/baseband
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osmocom-bb/src/target/trx_toolkit/burst_send.py

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4.8 KiB

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
# TRX Toolkit
# Auxiliary tool to send existing bursts via TRX DATA interface
#
# (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.
APP_CR_HOLDERS = [("2017-2018", "Vadim Yanitskiy <axilirator@gmail.com>")]
import logging as log
import signal
import argparse
import sys
from app_common import ApplicationBase
from data_dump import DATADumpFile
from data_if import DATAInterface
from data_msg import *
class Application(ApplicationBase):
def __init__(self):
self.app_print_copyright(APP_CR_HOLDERS)
self.argv = self.parse_argv()
# Set up signal handlers
signal.signal(signal.SIGINT, self.sig_handler)
# Configure logging
self.app_init_logging(self.argv)
# Open requested capture file
self.ddf = DATADumpFile(self.argv.capture_file)
def run(self):
# Init DATA interface with TRX or L1
if self.argv.conn_mode == "TRX":
self.data_if = DATAInterface(
self.argv.remote_addr, self.argv.base_port + 2,
self.argv.bind_addr, self.argv.base_port + 102)
elif self.argv.conn_mode == "L1":
self.data_if = DATAInterface(
self.argv.remote_addr, self.argv.base_port + 102,
self.argv.bind_addr, self.argv.base_port + 2)
# Read messages from the capture
messages = self.ddf.parse_all(
skip = self.argv.cnt_skip, count = self.argv.cnt_count)
if messages is False:
log.error("Parsing failed, nothing to send")
sys.exit(1)
for msg in messages:
# Pass filter
if not self.msg_pass_filter(msg):
continue
log.info("Sending a burst %s to %s..."
% (msg.desc_hdr(), self.argv.conn_mode))
# Send message
self.data_if.send_msg(msg)
def msg_pass_filter(self, msg):
# Direction filter
if isinstance(msg, RxMsg) and self.argv.conn_mode == "TRX":
return False # cannot send RxMsg to TRX
if isinstance(msg, TxMsg) and self.argv.conn_mode == "L1":
return False # cannot send TxMsg to L1
# Timeslot filter
if self.argv.pf_tn is not None:
if msg.tn != self.argv.pf_tn:
return False
# Frame number filter
if self.argv.pf_fn_lt is not None:
if msg.fn > self.argv.pf_fn_lt:
return False
if self.argv.pf_fn_gt is not None:
if msg.fn < self.argv.pf_fn_gt:
return False
# Burst passed ;)
return True
def parse_argv(self):
parser = argparse.ArgumentParser(prog = "burst_send",
description = "Auxiliary tool to send (reply) captured bursts")
# Register common logging options
self.app_reg_logging_options(parser)
trx_group = parser.add_argument_group("TRX interface")
trx_group.add_argument("-r", "--remote-addr",
dest = "remote_addr", type = str, default = "127.0.0.1",
help = "Set remote address (default %(default)s)")
trx_group.add_argument("-b", "--bind-addr",
dest = "bind_addr", type = str, default = "0.0.0.0",
help = "Set bind address (default %(default)s)")
trx_group.add_argument("-p", "--base-port",
dest = "base_port", type = int, default = 6700,
help = "Set base port number (default %(default)s)")
trx_group.add_argument("-m", "--conn-mode",
dest = "conn_mode", type = str,
choices = ["TRX", "L1"], default = "TRX",
help = "Where to send bursts (default %(default)s)")
trx_group.add_argument("-i", "--capture-file", metavar = "FILE",
dest = "capture_file", type = str, required = True,
help = "Capture file to read bursts from")
cnt_group = parser.add_argument_group("Count limitations (optional)")
cnt_group.add_argument("--skip", metavar = "N",
dest = "cnt_skip", type = int,
help = "Skip N messages before sending")
cnt_group.add_argument("--count", metavar = "N",
dest = "cnt_count", type = int,
help = "Stop after sending N messages")
pf_group = parser.add_argument_group("Filtering (optional)")
pf_group.add_argument("--timeslot", metavar = "TN",
dest = "pf_tn", type = int, choices = range(0, 8),
help = "TDMA timeslot number (equal TN)")
pf_group.add_argument("--frame-num-lt", metavar = "FN",
dest = "pf_fn_lt", type = int,
help = "TDMA frame number (lower than FN)")
pf_group.add_argument("--frame-num-gt", metavar = "FN",
dest = "pf_fn_gt", type = int,
help = "TDMA frame number (greater than FN)")
return parser.parse_args()
def sig_handler(self, signum, frame):
log.info("Signal %d received" % signum)
if signum == signal.SIGINT:
sys.exit(0)
if __name__ == '__main__':
app = Application()
app.run()