Initial commit

LICENSE.txt

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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
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+
+
+  This version of the GNU Lesser General Public License incorporates
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docs/stations.conf.sample

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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

frn/protocol/client.py

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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:

frn/utility.py

@@ -0,0 +1,46 @@
+# -*- 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:

parrot.py

@@ -0,0 +1,47 @@
+#!/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:

tools/gsmdecode.c

@@ -0,0 +1,36 @@
+#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);
+}