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Maurizio Porrato 9 years ago
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8 changed files with 470 additions and 0 deletions
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      LICENSE.txt
  2. +9
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      docs/stations.conf.sample
  3. +0
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      frn/__init__.py
  4. +0
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      frn/protocol/__init__.py
  5. +167
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      frn/protocol/client.py
  6. +46
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      frn/utility.py
  7. +47
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      parrot.py
  8. +36
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      tools/gsmdecode.c

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LICENSE.txt View File

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GNU LESSER GENERAL PUBLIC LICENSE
Version 3, 29 June 2007

Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.


This version of the GNU Lesser General Public License incorporates
the terms and conditions of version 3 of the GNU General Public
License, supplemented by the additional permissions listed below.

0. Additional Definitions.

As used herein, "this License" refers to version 3 of the GNU Lesser
General Public License, and the "GNU GPL" refers to version 3 of the GNU
General Public License.

"The Library" refers to a covered work governed by this License,
other than an Application or a Combined Work as defined below.

An "Application" is any work that makes use of an interface provided
by the Library, but which is not otherwise based on the Library.
Defining a subclass of a class defined by the Library is deemed a mode
of using an interface provided by the Library.

A "Combined Work" is a work produced by combining or linking an
Application with the Library. The particular version of the Library
with which the Combined Work was made is also called the "Linked
Version".

The "Minimal Corresponding Source" for a Combined Work means the
Corresponding Source for the Combined Work, excluding any source code
for portions of the Combined Work that, considered in isolation, are
based on the Application, and not on the Linked Version.

The "Corresponding Application Code" for a Combined Work means the
object code and/or source code for the Application, including any data
and utility programs needed for reproducing the Combined Work from the
Application, but excluding the System Libraries of the Combined Work.

1. Exception to Section 3 of the GNU GPL.

You may convey a covered work under sections 3 and 4 of this License
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2. Conveying Modified Versions.

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whatever part of its purpose remains meaningful, or

b) under the GNU GPL, with none of the additional permissions of
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The object code form of an Application may incorporate material from
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+ 9
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docs/stations.conf.sample View File

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[accountname]
operator=callsign, name
email=me@example.com
city=City - Locator
country=Your country
transmission=PC Only
description=
password=SECRET
network=Default network

+ 0
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frn/__init__.py View File


+ 0
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frn/protocol/__init__.py View File


+ 167
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frn/protocol/client.py View File

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# -*- coding: utf-8 -*-
from twisted.internet.protocol import ClientFactory
from twisted.protocols.basic import LineReceiver
from frn.utility import *
class FRNClient(LineReceiver):
client_version = 2010002
def connectionMade(self):
self.login()
def ready(self):
self.status = 'READY'
self.msgbuffer = []
self.phase = 0
self.setRawMode()
def startMultiLineMessage(self, msgtype, rest=''):
self.status = msgtype
self.phase = None
self.setLineMode(rest)
def collectMultiLineMessage(self, line):
if self.phase is None:
while line[0] not in '0123456789': # needed for client list
line = line[1:]
self.expected_lines = int(line.strip())
self.msgbuffer = []
self.phase = 0
else:
self.msgbuffer.append(line)
self.phase += 1
if self.phase >= self.expected_lines:
handler = getattr(self, 'on_'+self.status, self.on_unimplemented)
message = self.msgbuffer
self.ready()
handler(message)
def startAudioMessage(self, rest=''):
self.status = 'AUDIO'
self.phase = None
self.msgbuffer = ''
if len(rest) > 0:
self.collectAudioMessage(rest)
def collectAudioMessage(self, data):
needed = min(327, max(0, 327-len(self.msgbuffer)))
if len(data) > 0:
self.msgbuffer += data[:needed]
if len(self.msgbuffer) >= 327:
audio_data = self.msgbuffer
source = ord(audio_data[0])*256+ord(audio_data[1])
self.ready()
self.on_AUDIO(source, audio_data[2:])
if len(data) > needed:
self.dataReceived(data[needed:])
def lineReceived(self, line):
if self.status == 'AUTH':
if self.phase == 0:
self.latest_client_version = int(line.strip())
self.phase = 1
else:
self.serverdata = parseSimpleXML(line.strip())
print self.serverdata
if int(self.serverdata['sv']) > 2009004:
self.sendLine(makeAuthKey(self.serverdata['kp']))
self.ready()
else:
self.collectMultiLineMessage(line)
def rawDataReceived(self, data):
if self.status == 'READY':
packet_type = ord(data[0])
if packet_type == 0: # Keepalive
self.sendLine('P')
elif packet_type == 1: # TX ack
self.status == 'TX'
self.phase = 0
if len(data) > 1:
self.dataReceived(data[1:])
elif packet_type == 2: # Audio
self.startAudioMessage(data[1:])
elif packet_type == 3: # Client list
self.startMultiLineMessage('CLIENTS', data[1:])
elif packet_type == 4: # SMS
self.startMultiLineMessage('SMS', data[1:])
elif packet_type == 5: # Channel list
self.startMultiLineMessage('CHANNELS', data[1:])
else:
print "Unknown packet type %d" % packet_type
elif self.status == 'AUDIO':
self.collectAudioMessage(data)
elif self.status == 'TX':
if self.phase == 0:
self.phase = 1
self.on_TX(ord(data[0])*256+ord(data[1]))
def login(self):
d = self.factory.client_id
fields = [
('VX', self.client_version),
('EA', d['email']),
('PW', d['password']),
('ON', d['operator']),
('BC', d['transmission']),
('DS', d['description']),
('NN', d['country']),
('CT', d['city']),
('NT', d['network'])
]
ap = "CT:"+formatSimpleXML(fields)
self.status = 'AUTH'
self.phase = 0
self.sendLine(ap)
#self.request_rx()
def set_status(self, status):
self.sendLine('ST:%s' % str(status))
def request_rx(self):
self.sendLine('RX0')
def request_tx(self):
self.sendLine('TX0')
def send_audio(self, frame):
self.sendLine('TX1')
self.transport.write(frame)
def send_SMS(self, dest, text):
self.sendLine('TM:'+formatSimpleXML(dict(ID=dest, MS=text)))
def on_unimplemented(self, msg):
print msg
def on_AUDIO(self, from_id, frames):
pass
def on_TX(self, my_id):
pass
class FRNClientFactory(ClientFactory):
protocol = FRNClient
def __init__(self, **kw):
self.client_id = kw
def startedConnecting(self, connector):
print 'Started to connect.'
def buildProtocol(self, addr):
print 'Connected.'
return ClientFactory.buildProtocol(self, addr)
def clientConnectionLost(self, connector, reason):
print 'Lost connection. Reason:', reason
def clientConnectionFailed(self, connector, reason):
print 'Connection failed. Reason:', reason
# vim: set et ai sw=4 ts=4 sts=4:

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frn/utility.py View File

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# -*- coding: utf-8 -*-

from HTMLParser import HTMLParser


def makeAuthKey(kp):
if len(kp) != 6:
return 'ERROR'
aa, bb, cc = int(kp[:2]), int(kp[2:4]), int(kp[4:6])
defgh = "%05d" % ((cc+7)*(cc+4)+(bb+1)*(aa+2), )
return defgh[3]+defgh[0]+defgh[2]+defgh[4]+defgh[1]


class SimpleXMLParser(HTMLParser):

def handle_starttag(self, tag, attrs):
if not hasattr(self, 'fields'):
self.fields = {}
self.next_field = tag
self.next_data = ''

def handle_data(self, data):
self.next_data += data

def handle_endtag(self, tag):
self.fields[self.next_field] = self.next_data
self.next_field = self.next_data = None

def get_fields(self):
return self.fields


def parseSimpleXML(xml):
p = SimpleXMLParser()
p.feed(xml)
return p.get_fields()


def formatSimpleXML(elements):
if hasattr(elements, 'items'):
items = elements.items()
else:
items = elements
return ''.join(["<%s>%s</%s>" % (k.upper(),v,k.upper()) for k,v in items])

# vim: set et ai sw=4 ts=4 sts=4:

+ 47
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parrot.py View File

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#!/usr/bin/env python
# -*- coding: utf-8 -*-

from __future__ import with_statement
from frn.protocol.client import FRNClient, FRNClientFactory


class FRNParrot(FRNClient):

def on_SMS(self, msg):
print "Messaggio %s da %s: %s" % (msg[2], msg[0], msg[1])
if msg[2][0] == 'P': # Risponde solo ai messaggi privati
self.send_SMS(msg[0], msg[1])

def on_AUDIO(self, from_id, frames):
print "AUDIO from %d (%d bytes)" % (from_id, len(frames))
with file('rx-%d.gsm' % from_id, 'ab') as f:
f.write(frames)


class FRNParrotFactory(FRNClientFactory):
protocol = FRNParrot


if __name__ == '__main__':
import sys
from ConfigParser import ConfigParser
from twisted.internet import reactor

cfg = ConfigParser()
cfg.read('stations.conf')

if len(sys.argv) > 1:
station = sys.argv[1]
else:
stations = cfg.sections()
stations.sort()
station = cfg.sections()[0]
print "Profile not specified: using '%s'" % station

station_conf = dict(cfg.items(station))

reactor.connectTCP('master.freeradionetwork.it', 10024,
FRNParrotFactory(**station_conf))
reactor.run()

# vim: set et ai sw=4 ts=4 sts=4:

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tools/gsmdecode.c View File

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#include <stdio.h>
#include <errno.h>
#include <string.h>
#include <gsm.h>

int main() {
gsm handle = gsm_create();
int one = 1;
int zero = 0;
gsm_option(handle, GSM_OPT_WAV49, &one);
unsigned char src610[65];
gsm_frame src;
gsm_signal dst[160];
unsigned char outbuff[160];
while (!feof(stdin)) {
int rv = fread(src610, 65, 1, stdin);
if (rv < 0) {
fprintf(stderr, "%s\n", strerror(errno));
return -1;
}
else if (rv == 0) {
return 0;
}
int frameIndex = 0;
for (frameIndex = 0; frameIndex <= 1; frameIndex++) {
int iFrameIndex = !frameIndex;
gsm_decode(handle, src610 + 33 * frameIndex, dst);
rv = fwrite(dst, sizeof dst, 1, stdout);
if (rv < 0) {
fprintf(stderr, "%s\n", strerror(errno));
return -1;
}
}
}
gsm_destroy(handle);
}

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