diff options
Diffstat (limited to 'src/target/trx_toolkit/ctrl_if.py')
| -rw-r--r-- | src/target/trx_toolkit/ctrl_if.py | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/src/target/trx_toolkit/ctrl_if.py b/src/target/trx_toolkit/ctrl_if.py new file mode 100644 index 00000000..1e569a60 --- /dev/null +++ b/src/target/trx_toolkit/ctrl_if.py @@ -0,0 +1,79 @@ +#!/usr/bin/env python2 +# -*- coding: utf-8 -*- + +# TRX Toolkit +# CTRL interface implementation +# +# (C) 2016-2017 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 udp_link import UDPLink + +class CTRLInterface(UDPLink): + def handle_rx(self, data, remote): + if not self.verify_req(data): + print("[!] Wrong data on CTRL interface") + return + + # Attempt to parse a command + request = self.prepare_req(data) + rc = self.parse_cmd(request) + + if type(rc) is tuple: + self.send_response(request, remote, rc[0], rc[1]) + else: + self.send_response(request, remote, rc) + + def verify_req(self, data): + # Verify command signature + return data.startswith("CMD") + + def prepare_req(self, data): + # Strip signature, paddings and \0 + request = data[4:].strip().strip("\0") + # Split into a command and arguments + request = request.split(" ") + # Now we have something like ["TXTUNE", "941600"] + return request + + def verify_cmd(self, request, cmd, argc): + # Check if requested command matches + if request[0] != cmd: + return False + + # And has enough arguments + if len(request) - 1 != argc: + return False + + return True + + def send_response(self, request, remote, response_code, params = None): + # Include status code, for example ["TXTUNE", "0", "941600"] + request.insert(1, str(response_code)) + + # Optionally append command specific parameters + if params is not None: + request += params + + # Add the response signature, and join back to string + response = "RSP " + " ".join(request) + "\0" + # Now we have something like "RSP TXTUNE 0 941600" + self.sendto(response, remote) + + def parse_cmd(self, request): + raise NotImplementedError |