515 lines
15 KiB
Python
515 lines
15 KiB
Python
'''
|
|
This file is part of RTL Multi-User Server,
|
|
that makes multi-user access to your DVB-T dongle used as an SDR.
|
|
Copyright (c) 2013-2014 by Andras Retzler, HA7ILM <randras@sdr.hu>
|
|
|
|
RTL Multi-User Server 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 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
RTL Multi-User Server 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 RTL Multi-User Server. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
-----
|
|
|
|
2013-11? Asyncore version
|
|
2014-03 Fill with null on no data
|
|
|
|
'''
|
|
|
|
import socket
|
|
import sys
|
|
import array
|
|
import time
|
|
import logging
|
|
import os
|
|
import time
|
|
import subprocess
|
|
import fcntl
|
|
import thread
|
|
import pdb
|
|
import asyncore
|
|
import multiprocessing
|
|
import dl
|
|
|
|
import code
|
|
import traceback
|
|
|
|
def ip_match(this,ip_ranges,for_allow):
|
|
if not len(ip_ranges):
|
|
return 1 #empty list matches all ip addresses
|
|
for ip_range in ip_ranges:
|
|
#print this[0:len(ip_range)], ip_range
|
|
if this[0:len(ip_range)]==ip_range:
|
|
return 1
|
|
return 0
|
|
|
|
def ip_access_control(ip):
|
|
if(not cfg.use_ip_access_control): return 1
|
|
allowed=0
|
|
if(cfg.order_allow_deny):
|
|
if ip_match(ip,cfg.allowed_ip_ranges,1): allowed=1
|
|
if ip_match(ip,cfg.denied_ip_ranges,0): allowed=0
|
|
else:
|
|
if ip_match(ip,cfg.denied_ip_ranges,0):
|
|
allowed=0
|
|
if ip_match(ip,cfg.allowed_ip_ranges,1):
|
|
allowed=1
|
|
return allowed
|
|
|
|
def add_data_to_clients(new_data):
|
|
# might be called from:
|
|
# -> dsp_read
|
|
# -> rtl_tcp_asyncore.handle_read
|
|
global clients
|
|
global clients_mutex
|
|
clients_mutex.acquire()
|
|
for client in clients:
|
|
#print "client %d size: %d"%(client[0].ident,client[0].waiting_data.qsize())
|
|
if(client[0].waiting_data.full()):
|
|
if cfg.cache_full_behaviour == 0:
|
|
log.error("client cache full, dropping samples: "+str(client[0].ident)+"@"+client[0].socket[1][0])
|
|
while not client[0].waiting_data.empty(): # clear queue
|
|
client[0].waiting_data.get(False, None)
|
|
elif cfg.cache_full_behaviour == 1:
|
|
#rather closing client:
|
|
log.error("client cache full, dropping client: "+str(client[0].ident)+"@"+client[0].socket[1][0])
|
|
client[0].close()
|
|
elif cfg.cache_full_behaviour == 2:
|
|
pass #client cache full, just not taking care
|
|
else: log.error("invalid value for cfg.cache_full_behaviour")
|
|
else:
|
|
client[0].waiting_data.put(new_data)
|
|
clients_mutex.release()
|
|
|
|
def dsp_read_thread():
|
|
global proc
|
|
global dsp_data_count
|
|
while True:
|
|
try:
|
|
my_buffer=proc.stdout.read(1024)
|
|
except IOError:
|
|
log.error("DSP subprocess is not ready for reading.")
|
|
time.sleep(1)
|
|
continue
|
|
add_data_to_clients(my_buffer)
|
|
if cfg.debug_dsp_command:
|
|
dsp_data_count+=len(my_buffer)
|
|
|
|
def dsp_write_thread():
|
|
global proc
|
|
global dsp_input_queue
|
|
global original_data_count
|
|
while True:
|
|
try:
|
|
my_buffer=dsp_input_queue.get(timeout=0.3)
|
|
except:
|
|
continue
|
|
proc.stdin.write(my_buffer)
|
|
proc.stdin.flush()
|
|
if cfg.debug_dsp_command:
|
|
original_data_count+=len(my_buffer)
|
|
|
|
class client_handler(asyncore.dispatcher):
|
|
|
|
def __init__(self,client_param):
|
|
self.client=client_param
|
|
self.client[0].asyncore=self
|
|
self.sent_dongle_id=False
|
|
self.last_waiting_buffer=""
|
|
asyncore.dispatcher.__init__(self, self.client[0].socket[0])
|
|
|
|
def handle_read(self):
|
|
global commands
|
|
new_command = self.recv(5)
|
|
if len(new_command)>=5:
|
|
if handle_command(new_command, self.client):
|
|
commands.put(new_command)
|
|
|
|
def handle_error(self):
|
|
exc_type, exc_value, exc_traceback = sys.exc_info()
|
|
log.info("client error: "+str(self.client[0].ident)+"@"+self.client[0].socket[1][0])
|
|
traceback.print_tb(exc_traceback)
|
|
self.close()
|
|
|
|
def handle_close(self):
|
|
self.client[0].close()
|
|
log.info("client disconnected: "+str(self.client[0].ident)+"@"+self.client[0].socket[1][0])
|
|
|
|
def writable(self):
|
|
#print "queryWritable",not self.client[0].waiting_data.empty()
|
|
return not self.client[0].waiting_data.empty()
|
|
|
|
def handle_write(self):
|
|
global last_waiting
|
|
global rtl_dongle_identifier
|
|
global sample_rate
|
|
if not self.sent_dongle_id:
|
|
self.send(rtl_dongle_identifier)
|
|
self.sent_dongle_id=True
|
|
return
|
|
#print "write2client",self.client[0].waiting_data.qsize()
|
|
next=self.last_waiting_buffer+self.client[0].waiting_data.get()
|
|
sent=asyncore.dispatcher.send(self, next)
|
|
self.last_waiting_buffer=next[sent:]
|
|
|
|
class server_asyncore(asyncore.dispatcher):
|
|
|
|
def __init__(self):
|
|
asyncore.dispatcher.__init__(self)
|
|
self.create_socket(socket.AF_INET, socket.SOCK_STREAM)
|
|
self.set_reuse_addr()
|
|
self.bind((cfg.my_ip, cfg.my_listening_port))
|
|
self.listen(5)
|
|
log.info("Server listening on port: "+str(cfg.my_listening_port))
|
|
|
|
def handle_accept(self):
|
|
global max_client_id
|
|
global clients_mutex
|
|
global clients
|
|
my_client=[client()]
|
|
my_client[0].socket=self.accept()
|
|
if (my_client[0].socket is None): # not sure if required
|
|
return
|
|
if (ip_access_control(my_client[0].socket[1][0])):
|
|
my_client[0].ident=max_client_id
|
|
max_client_id+=1
|
|
my_client[0].start_time=time.time()
|
|
my_client[0].waiting_data=multiprocessing.Queue(250)
|
|
clients_mutex.acquire()
|
|
clients.append(my_client)
|
|
clients_mutex.release()
|
|
handler = client_handler(my_client)
|
|
log.info("client accepted: "+str(len(clients)-1)+"@"+my_client[0].socket[1][0]+":"+str(my_client[0].socket[1][1])+" users now: "+str(len(clients)))
|
|
else:
|
|
log.info("client denied: "+str(len(clients)-1)+"@"+my_client[0].socket[1][0]+":"+str(my_client[0].socket[1][1])+" blocked by ip")
|
|
my_client.socket.close()
|
|
|
|
rtl_tcp_resetting=False #put me away
|
|
|
|
def rtl_tcp_asyncore_reset(timeout):
|
|
global rtl_tcp_core
|
|
global rtl_tcp_resetting
|
|
if rtl_tcp_resetting: return
|
|
#print "rtl_tcp_asyncore_reset"
|
|
rtl_tcp_resetting=True
|
|
time.sleep(timeout)
|
|
try:
|
|
rtl_tcp_core.close()
|
|
except:
|
|
pass
|
|
try:
|
|
del rtl_tcp_core
|
|
except:
|
|
pass
|
|
rtl_tcp_core=rtl_tcp_asyncore()
|
|
#print asyncore.socket_map
|
|
rtl_tcp_resetting=False
|
|
|
|
class rtl_tcp_asyncore(asyncore.dispatcher):
|
|
def __init__(self):
|
|
global server_missing_logged
|
|
asyncore.dispatcher.__init__(self)
|
|
self.ok=True
|
|
self.create_socket(socket.AF_INET, socket.SOCK_STREAM)
|
|
try:
|
|
self.connect((cfg.rtl_tcp_host, cfg.rtl_tcp_port))
|
|
self.socket.settimeout(0.1)
|
|
except:
|
|
log.error("rtl_tcp connection refused. Retrying.")
|
|
thread.start_new_thread(rtl_tcp_asyncore_reset, (1,))
|
|
self.close()
|
|
return
|
|
|
|
def handle_error(self):
|
|
global server_missing_logged
|
|
global rtl_tcp_connected
|
|
rtl_tcp_connected=False
|
|
exc_type, exc_value, exc_traceback = sys.exc_info()
|
|
self.ok=False
|
|
server_is_missing=hasattr(exc_value,"errno") and exc_value.errno==111
|
|
if (not server_is_missing) or (not server_missing_logged):
|
|
log.error("with rtl_tcp host connection: "+str(exc_value))
|
|
#traceback.print_tb(exc_traceback)
|
|
server_missing_logged|=server_is_missing
|
|
try:
|
|
self.close()
|
|
except:
|
|
pass
|
|
thread.start_new_thread(rtl_tcp_asyncore_reset, (2,))
|
|
|
|
def handle_connect(self):
|
|
global server_missing_logged
|
|
global rtl_tcp_connected
|
|
self.socket.settimeout(0.1)
|
|
rtl_tcp_connected=True
|
|
if self.ok:
|
|
log.info("rtl_tcp host connection estabilished")
|
|
server_missing_logged=False
|
|
|
|
def handle_close(self):
|
|
global rtl_tcp_connected
|
|
global rtl_tcp_core
|
|
rtl_tcp_connected=False
|
|
log.error("rtl_tcp host connection has closed, now trying to reopen")
|
|
try:
|
|
self.close()
|
|
except:
|
|
pass
|
|
thread.start_new_thread(rtl_tcp_asyncore_reset, (2,))
|
|
|
|
def handle_read(self):
|
|
global rtl_dongle_identifier
|
|
global dsp_input_queue
|
|
global watchdog_data_count
|
|
if(len(rtl_dongle_identifier)==0):
|
|
rtl_dongle_identifier=self.recv(12)
|
|
return
|
|
new_data_buffer=self.recv(16348)
|
|
if cfg.watchdog_interval:
|
|
watchdog_data_count+=16348
|
|
if cfg.use_dsp_command:
|
|
dsp_input_queue.put(new_data_buffer)
|
|
#print "did put anyway"
|
|
else:
|
|
add_data_to_clients(new_data_buffer)
|
|
|
|
def writable(self):
|
|
#check if any new commands to write
|
|
global commands
|
|
return not commands.empty()
|
|
|
|
def handle_write(self):
|
|
global commands
|
|
while not commands.empty():
|
|
mcmd=commands.get()
|
|
self.send(mcmd)
|
|
|
|
def xxd(data):
|
|
#diagnostic purposes only
|
|
output=""
|
|
for d in data:
|
|
output+=hex(ord(d))[2:].zfill(2)+" "
|
|
return output
|
|
|
|
def handle_command(command, client_param):
|
|
global sample_rate
|
|
client=client_param[0]
|
|
param=array.array("I", command[1:5])[0]
|
|
param=socket.ntohl(param)
|
|
command_id=ord(command[0])
|
|
client_info=str(client.ident)+"@"+client.socket[1][0]+":"+str(client.socket[1][1])
|
|
if(time.time()-client.start_time<cfg.client_cant_set_until and not (cfg.first_client_can_set and client.ident==0) ):
|
|
log.info("deny: "+client_info+" -> client can't set anything until "+str(cfg.client_cant_set_until)+" seconds")
|
|
return 0
|
|
if command_id == 1:
|
|
if max(map((lambda r: param>=r[0] and param<=r[1]),cfg.freq_allowed_ranges)):
|
|
log.debug("allow: "+client_info+" -> set freq "+str(param))
|
|
return 1
|
|
else:
|
|
log.debug("deny: "+client_info+" -> set freq - out of range: "+str(param))
|
|
elif command_id == 2:
|
|
log.debug("deny: "+client_info+" -> set sample rate: "+str(param))
|
|
sample_rate=param
|
|
return 0 # ordinary clients are not allowed to do this
|
|
elif command_id == 3:
|
|
log.debug("deny/allow: "+client_info+" -> set gain mode: "+str(param))
|
|
return cfg.allow_gain_set
|
|
elif command_id == 4:
|
|
log.debug("deny/allow: "+client_info+" -> set gain: "+str(param))
|
|
return cfg.allow_gain_set
|
|
elif command_id == 5:
|
|
log.debug("deny: "+client_info+" -> set freq correction: "+str(param))
|
|
return 0
|
|
elif command_id == 6:
|
|
log.debug("deny/allow: set if stage gain")
|
|
return cfg.allow_gain_set
|
|
elif command_id == 7:
|
|
log.debug("deny: set test mode")
|
|
return 0
|
|
elif command_id == 8:
|
|
log.debug("deny/allow: set agc mode")
|
|
return cfg.allow_gain_set
|
|
elif command_id == 9:
|
|
log.debug("deny: set direct sampling")
|
|
return 0
|
|
elif command_id == 10:
|
|
log.debug("deny: set offset tuning")
|
|
return 0
|
|
elif command_id == 11:
|
|
log.debug("deny: set rtl xtal")
|
|
return 0
|
|
elif command_id == 12:
|
|
log.debug("deny: set tuner xtal")
|
|
return 0
|
|
elif command_id == 13:
|
|
log.debug("deny/allow: set tuner gain by index")
|
|
return cfg.allow_gain_set
|
|
else:
|
|
log.debug("deny: "+client_info+" sent an ivalid command: "+str(param))
|
|
return 0
|
|
|
|
def watchdog_thread():
|
|
global rtl_tcp_connected
|
|
global rtl_tcp_core
|
|
global watchdog_data_count
|
|
global sample_rate
|
|
zero_buffer_size=16348
|
|
second_frac=10
|
|
zero_buffer='\x7f'*zero_buffer_size
|
|
watchdog_data_count=0
|
|
rtl_tcp_connected=False
|
|
null_fill=False
|
|
time.sleep(4) # wait before activating this thread
|
|
log.info("watchdog started")
|
|
first_start=True
|
|
n=0
|
|
while True:
|
|
wait_altogether=cfg.watchdog_interval if rtl_tcp_connected or first_start else cfg.reconnect_interval
|
|
first_start=False
|
|
if null_fill:
|
|
log.error("watchdog: filling buffer with zeros.")
|
|
while wait_altogether>0:
|
|
wait_altogether-=1.0/second_frac
|
|
for i in range(0,((2*sample_rate)/second_frac)/zero_buffer_size):
|
|
add_data_to_clients(zero_buffer)
|
|
n+=len(zero_buffer)
|
|
time.sleep(0) #yield
|
|
if watchdog_data_count: break
|
|
if watchdog_data_count: break
|
|
time.sleep(1.0/second_frac)
|
|
#print "sent altogether",n
|
|
else:
|
|
time.sleep(wait_altogether)
|
|
null_fill=not watchdog_data_count
|
|
if not watchdog_data_count:
|
|
log.error("watchdog: restarting rtl_tcp_asyncore() now.")
|
|
rtl_tcp_asyncore_reset(0)
|
|
watchdog_data_count=0
|
|
|
|
|
|
|
|
def dsp_debug_thread():
|
|
global dsp_data_count
|
|
global original_data_count
|
|
while 1:
|
|
time.sleep(1)
|
|
print "[rtl-mus] DSP | Original data: "+str(int(original_data_count/1000))+"kB/sec | Processed data: "+str(int(dsp_data_count/1000))+"kB/sec"
|
|
dsp_data_count = original_data_count=0
|
|
|
|
class client:
|
|
ident=None #id
|
|
to_close=False
|
|
waiting_data=None
|
|
start_time=None
|
|
socket=None
|
|
asyncore=None
|
|
|
|
def close(self):
|
|
global clients_mutex
|
|
global clients
|
|
clients_mutex.acquire()
|
|
for i in range(0,len(clients)):
|
|
if clients[i][0].ident==self.ident:
|
|
try:
|
|
self.socket.close()
|
|
except:
|
|
pass
|
|
try:
|
|
self.asyncore.close()
|
|
del self.asyncore
|
|
except:
|
|
pass
|
|
break
|
|
clients_mutex.release()
|
|
|
|
|
|
def main():
|
|
global server_missing_logged
|
|
global rtl_dongle_identifier
|
|
global log
|
|
global clients
|
|
global clients_mutex
|
|
global original_data_count
|
|
global dsp_input_queue
|
|
global dsp_data_count
|
|
global proc
|
|
global commands
|
|
global max_client_id
|
|
global rtl_tcp_core
|
|
global sample_rate
|
|
|
|
# set up logging
|
|
log = logging.getLogger("rtl_mus")
|
|
log.setLevel(logging.DEBUG)
|
|
formatter = logging.Formatter('%(asctime)s %(levelname)s %(message)s')
|
|
stream_handler = logging.StreamHandler()
|
|
stream_handler.setLevel(logging.DEBUG)
|
|
stream_handler.setFormatter(formatter)
|
|
log.addHandler(stream_handler)
|
|
file_handler = logging.FileHandler(cfg.log_file_path)
|
|
file_handler.setLevel(logging.INFO)
|
|
file_handler.setFormatter(formatter)
|
|
log.addHandler(file_handler)
|
|
log.info("Server is UP")
|
|
|
|
server_missing_logged=0 # Not to flood the screen with messages related to rtl_tcp disconnect
|
|
rtl_dongle_identifier='' # rtl_tcp sends some identifier on dongle type and gain values in the first few bytes right after connection
|
|
clients=[]
|
|
dsp_data_count=original_data_count=0
|
|
commands=multiprocessing.Queue()
|
|
dsp_input_queue=multiprocessing.Queue()
|
|
clients_mutex=multiprocessing.Lock()
|
|
max_client_id=0
|
|
sample_rate=250000 # so far only watchdog thread uses it to fill buffer up with zeros on missing input
|
|
|
|
# start dsp threads
|
|
if cfg.use_dsp_command:
|
|
print "[rtl_mus] Opening DSP process..."
|
|
proc = subprocess.Popen (cfg.dsp_command.split(" "), stdin = subprocess.PIPE, stdout = subprocess.PIPE) #!! should fix the split :-S
|
|
dsp_read_thread_v=thread.start_new_thread(dsp_read_thread, ())
|
|
dsp_write_thread_v=thread.start_new_thread(dsp_write_thread, ())
|
|
if cfg.debug_dsp_command:
|
|
dsp_debug_thread_v=thread.start_new_thread(dsp_debug_thread,())
|
|
|
|
# start watchdog thread
|
|
if cfg.watchdog_interval != 0:
|
|
watchdog_thread_v=thread.start_new_thread(watchdog_thread,())
|
|
|
|
# start asyncores
|
|
rtl_tcp_core = rtl_tcp_asyncore()
|
|
server_core = server_asyncore()
|
|
|
|
asyncore.loop(0.1)
|
|
|
|
|
|
if __name__=="__main__":
|
|
print
|
|
print "rtl_mus: Multi-User I/Q Data Server for RTL-SDR v0.22, made at HA5KFU Amateur Radio Club (http://ha5kfu.hu)"
|
|
print " code by Andras Retzler, HA7ILM <randras@sdr.hu>"
|
|
print " distributed under GNU GPL v3"
|
|
print
|
|
|
|
for libcpath in ["/lib/i386-linux-gnu/libc.so.6","/lib/libc.so.6"]:
|
|
if os.path.exists(libcpath):
|
|
libc = dl.open(libcpath)
|
|
libc.call("prctl", 15, "rtl_mus", 0, 0, 0)
|
|
break
|
|
|
|
# === Load configuration script ===
|
|
if len(sys.argv)==1:
|
|
print "[rtl_mus] Warning! Configuration script not specified. I will use: \"config_rtl.py\""
|
|
config_script="config_rtl"
|
|
else:
|
|
config_script=sys.argv[1]
|
|
cfg=__import__(config_script)
|
|
if cfg.setuid_on_start:
|
|
os.setuid(cfg.uid)
|
|
main()
|