214 lines
5.4 KiB
Python
Executable File
214 lines
5.4 KiB
Python
Executable File
#!/usr/bin/env python2
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# -*- coding: utf-8 -*-
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# TRX Toolkit
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# Auxiliary tool to send existing bursts via TRX DATA interface
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#
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# (C) 2017-2018 by Vadim Yanitskiy <axilirator@gmail.com>
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#
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# All Rights Reserved
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License along
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# with this program; if not, write to the Free Software Foundation, Inc.,
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# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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from copyright import print_copyright
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CR_HOLDERS = [("2017-2018", "Vadim Yanitskiy <axilirator@gmail.com>")]
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import signal
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import getopt
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import sys
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from data_dump import DATADumpFile
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from data_if import DATAInterface
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from gsm_shared import *
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from data_msg import *
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class Application:
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# Application variables
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remote_addr = "127.0.0.1"
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base_port = 5700
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conn_mode = "TRX"
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# Burst source
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capture_file = None
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# Count limitations
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msg_skip = None
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msg_count = None
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# Pass filtering
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pf_fn_lt = None
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pf_fn_gt = None
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pf_tn = None
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def __init__(self):
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print_copyright(CR_HOLDERS)
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self.parse_argv()
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# Set up signal handlers
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signal.signal(signal.SIGINT, self.sig_handler)
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# Open requested capture file
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self.ddf = DATADumpFile(self.capture_file)
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def run(self):
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# Init DATA interface with TRX or L1
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if self.conn_mode == "TRX":
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self.data_if = DATAInterface(self.remote_addr,
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self.base_port + 2, self.base_port + 102)
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l12trx = True
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elif self.conn_mode == "L1":
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self.data_if = DATAInterface(self.remote_addr,
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self.base_port + 102, self.base_port + 2)
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l12trx = False
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else:
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self.print_help("[!] Unknown connection type")
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sys.exit(2)
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# Read messages from the capture
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messages = self.ddf.parse_all(
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skip = self.msg_skip, count = self.msg_count)
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if messages is False:
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pass # FIXME!!!
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for msg in messages:
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# Pass filter
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if not self.msg_pass_filter(l12trx, msg):
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continue
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print("[i] Sending a burst %s to %s..."
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% (msg.desc_hdr(), self.conn_mode))
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# Send message
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self.data_if.send_msg(msg)
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def msg_pass_filter(self, l12trx, msg):
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# Direction filter
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if isinstance(msg, DATAMSG_L12TRX) and not l12trx:
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return False
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elif isinstance(msg, DATAMSG_TRX2L1) and l12trx:
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return False
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# Timeslot filter
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if self.pf_tn is not None:
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if msg.tn != self.pf_tn:
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return False
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# Frame number filter
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if self.pf_fn_lt is not None:
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if msg.fn > self.pf_fn_lt:
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return False
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if self.pf_fn_gt is not None:
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if msg.fn < self.pf_fn_gt:
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return False
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# Burst passed ;)
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return True
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def print_help(self, msg = None):
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s = " Usage: " + sys.argv[0] + " [options]\n\n" \
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" Some help...\n" \
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" -h --help this text\n\n"
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s += " TRX interface specific\n" \
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" -m --conn-mode Send bursts to: TRX (default) / L1\n" \
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" -r --remote-addr Set remote address (default %s)\n" \
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" -p --base-port Set base port number (default %d)\n\n"
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s += " Burst source\n" \
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" -i --capture-file Read bursts from capture file\n\n" \
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s += " Count limitations (disabled by default)\n" \
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" --msg-skip NUM Skip NUM messages before sending\n" \
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" --msg-count NUM Stop after sending NUM messages\n\n" \
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s += " Filtering (disabled by default)\n" \
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" --timeslot NUM TDMA timeslot number [0..7]\n" \
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" --frame-num-lt NUM TDMA frame number lower than NUM\n" \
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" --frame-num-gt NUM TDMA frame number greater than NUM\n"
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print(s % (self.remote_addr, self.base_port))
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if msg is not None:
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print(msg)
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def parse_argv(self):
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try:
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opts, args = getopt.getopt(sys.argv[1:],
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"m:r:p:i:h",
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[
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"help",
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"conn-mode=",
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"remote-addr=",
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"base-port=",
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"capture-file=",
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"msg-skip=",
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"msg-count=",
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"timeslot=",
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"frame-num-lt=",
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"frame-num-gt=",
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])
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except getopt.GetoptError as err:
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self.print_help("[!] " + str(err))
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sys.exit(2)
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for o, v in opts:
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if o in ("-h", "--help"):
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self.print_help()
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sys.exit(2)
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# Capture file
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elif o in ("-i", "--capture-file"):
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self.capture_file = v
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# TRX interface specific
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elif o in ("-m", "--conn-mode"):
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self.conn_mode = v
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elif o in ("-r", "--remote-addr"):
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self.remote_addr = v
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elif o in ("-p", "--base-port"):
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self.base_port = int(v)
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# Count limitations
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elif o == "--msg-skip":
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self.msg_skip = int(v)
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elif o == "--msg-count":
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self.msg_count = int(v)
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# Timeslot pass filter
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elif o == "--timeslot":
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self.pf_tn = int(v)
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if self.pf_tn < 0 or self.pf_tn > 7:
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self.print_help("[!] Wrong timeslot value")
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sys.exit(2)
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# Frame number pass filter
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elif o == "--frame-num-lt":
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self.pf_fn_lt = int(v)
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elif o == "--frame-num-gt":
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self.pf_fn_gt = int(v)
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if self.capture_file is None:
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self.print_help("[!] Please specify a capture file")
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sys.exit(2)
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def sig_handler(self, signum, frame):
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print("Signal %d received" % signum)
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if signum is signal.SIGINT:
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sys.exit(0)
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if __name__ == '__main__':
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app = Application()
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app.run()
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