Open Source implementation of APCO P25
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op25/op25/gr-op25_repeater/apps/http.py

446 lines
17 KiB

#! /usr/bin/python
# Copyright 2017, 2018 Max H. Parke KA1RBI
#
# This file is part of OP25
#
# OP25 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, or (at your option)
# any later version.
#
# OP25 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 OP25; see the file COPYING. If not, write to the Free
# Software Foundation, Inc., 51 Franklin Street, Boston, MA
# 02110-1301, USA.
import sys
import os
import time
import re
import json
import socket
import traceback
import threading
import glob
import subprocess
import zmq
from gnuradio import gr
from waitress.server import create_server
from optparse import OptionParser
from multi_rx import byteify
from tsvfile import load_tsv, make_config
my_input_q = None
my_output_q = None
my_recv_q = None
my_port = None
my_backend = None
CFG_DIR = '../www/config/'
TSV_DIR = './'
"""
fake http and ajax server module
TODO: make less fake
"""
def static_file(environ, start_response):
content_types = { 'png': 'image/png', 'jpeg': 'image/jpeg', 'jpg': 'image/jpeg', 'gif': 'image/gif', 'css': 'text/css', 'js': 'application/javascript', 'html': 'text/html'}
img_types = 'png jpg jpeg gif'.split()
if environ['PATH_INFO'] == '/':
filename = 'index.html'
else:
filename = re.sub(r'[^a-zA-Z0-9_.\-]', '', environ['PATH_INFO'])
suf = filename.split('.')[-1]
pathname = '../www/www-static'
if suf in img_types:
pathname = '../www/images'
pathname = '%s/%s' % (pathname, filename)
if suf not in content_types.keys() or '..' in filename or not os.access(pathname, os.R_OK):
sys.stderr.write('404 %s\n' % pathname)
status = '404 NOT FOUND'
content_type = 'text/plain'
output = status
else:
output = open(pathname).read()
content_type = content_types[suf]
status = '200 OK'
return status, content_type, output
def valid_tsv(filename):
if not os.access(filename, os.R_OK):
return False
line = open(filename).readline()
for word in 'Sysname Offset NAC Modulation TGID Whitelist Blacklist'.split():
if word not in line:
return False
return True
def tsv_config(filename):
DEFAULT_CFG = '../www/config/default.json'
filename = '%s%s' % (TSV_DIR, filename)
filename = filename.replace('[TSV]', '.tsv')
if not valid_tsv(filename):
return None
cfg = make_config(load_tsv(filename))
default_cfg = json.loads(open(DEFAULT_CFG).read())
result = default_cfg
channels = [ {'active': True,
'blacklist': cfg[nac]['blacklist'],
'whitelist': cfg[nac]['whitelist'],
'cclist': cfg[nac]['cclist'],
'demod_type': 'cqpsk',
'destination': 'udp://127.0.0.1:23456',
'filter_type': 'rc',
'frequency': 500000000,
'if_rate': 24000,
'nac': nac,
'name': cfg[nac]['sysname'],
'phase2_tdma': False,
'plot': "",
'tgids': cfg[nac]['tgid_map'],
'trunked': True
}
for nac in cfg.keys() ]
result['channels'] = channels
return {'json_type':'config_data', 'data': result}
def do_request(d):
global my_backend
if d['command'].startswith('rx-'):
msg = gr.message().make_from_string(json.dumps(d), -2, 0, 0)
if not my_backend.input_q.full_p():
my_backend.input_q.insert_tail(msg)
return None
elif d['command'] == 'config-load':
if '[TSV]' in d['data']:
return tsv_config(d['data'])
filename = '%s%s.json' % (CFG_DIR, d['data'])
if not os.access(filename, os.R_OK):
return None
js_msg = json.loads(open(filename).read())
return {'json_type':'config_data', 'data': js_msg}
elif d['command'] == 'config-list':
files = glob.glob('%s*.json' % CFG_DIR)
files = [x.replace('.json', '') for x in files]
files = [x.replace(CFG_DIR, '') for x in files]
if d['data'] == 'tsv':
tsvfiles = glob.glob('%s*.tsv' % TSV_DIR)
tsvfiles = [x for x in tsvfiles if valid_tsv(x)]
tsvfiles = [x.replace('.tsv', '[TSV]') for x in tsvfiles]
tsvfiles = [x.replace(TSV_DIR, '') for x in tsvfiles]
files += tsvfiles
return {'json_type':'config_list', 'data': files}
elif d['command'] == 'config-save':
name = d['data']['name']
if '..' in name or '.json' in name or '/' in name:
return None
filename = '%s%s.json' % (CFG_DIR, d['data']['name'])
open(filename, 'w').write(json.dumps(d['data']['value'], indent=4, separators=[',',':'], sort_keys=True))
return None
def post_req(environ, start_response, postdata):
global my_input_q, my_output_q, my_recv_q, my_port
resp_msg = []
try:
data = json.loads(postdata)
except:
sys.stderr.write('post_req: error processing input: %s:\n' % (postdata))
traceback.print_exc(limit=None, file=sys.stderr)
sys.stderr.write('*** end traceback ***\n')
for d in data:
if d['command'].startswith('config-') or d['command'].startswith('rx-'):
resp = do_request(d)
if resp:
resp_msg.append(resp)
continue
if d['command'].startswith('settings-'):
msg = gr.message().make_from_string(json.dumps(d), -4, 0, 0)
else:
msg = gr.message().make_from_string(str(d['command']), -2, d['data'], 0)
if my_output_q.full_p():
my_output_q.delete_head_nowait() # ignores result
if not my_output_q.full_p():
my_output_q.insert_tail(msg)
time.sleep(0.2)
while not my_recv_q.empty_p():
msg = my_recv_q.delete_head()
if msg.type() == -4:
resp_msg.append(json.loads(msg.to_string()))
status = '200 OK'
content_type = 'application/json'
output = json.dumps(resp_msg)
return status, content_type, output
def http_request(environ, start_response):
if environ['REQUEST_METHOD'] == 'GET':
status, content_type, output = static_file(environ, start_response)
elif environ['REQUEST_METHOD'] == 'POST':
postdata = environ['wsgi.input'].read()
status, content_type, output = post_req(environ, start_response, postdata)
else:
status = '200 OK'
content_type = 'text/plain'
output = status
sys.stderr.write('http_request: unexpected input %s\n' % environ['PATH_INFO'])
response_headers = [('Content-type', content_type),
('Content-Length', str(len(output)))]
start_response(status, response_headers)
return [output]
def application(environ, start_response):
failed = False
try:
result = http_request(environ, start_response)
except:
failed = True
sys.stderr.write('application: request failed:\n%s\n' % traceback.format_exc())
sys.exit(1)
return result
def process_qmsg(msg):
if my_recv_q.full_p():
my_recv_q.delete_head_nowait() # ignores result
if my_recv_q.full_p():
return
my_recv_q.insert_tail(msg)
class http_server(object):
def __init__(self, input_q, output_q, endpoint, **kwds):
global my_input_q, my_output_q, my_recv_q, my_port
host, port = endpoint.split(':')
if my_port is not None:
raise AssertionError('this server is already active on port %s' % my_port)
my_input_q = input_q
my_output_q = output_q
my_port = int(port)
my_recv_q = gr.msg_queue(10)
self.q_watcher = queue_watcher(my_input_q, process_qmsg)
self.server = create_server(application, host=host, port=my_port)
def run(self):
self.server.run()
class queue_watcher(threading.Thread):
def __init__(self, msgq, callback, **kwds):
threading.Thread.__init__ (self, **kwds)
self.setDaemon(1)
self.msgq = msgq
self.callback = callback
self.keep_running = True
self.start()
def run(self):
while(self.keep_running):
msg = self.msgq.delete_head()
self.callback(msg)
class Backend(threading.Thread):
def __init__(self, options, input_q, output_q, init_config=None, **kwds):
threading.Thread.__init__ (self, **kwds)
self.setDaemon(1)
self.keep_running = True
self.rx_options = None
self.input_q = input_q
self.output_q = output_q
self.verbosity = options.verbosity
self.zmq_context = zmq.Context()
self.zmq_port = options.zmq_port
self.zmq_sub = self.zmq_context.socket(zmq.SUB)
self.zmq_sub.connect('tcp://localhost:%d' % self.zmq_port)
self.zmq_sub.setsockopt(zmq.SUBSCRIBE, '')
self.zmq_pub = self.zmq_context.socket(zmq.PUB)
self.zmq_pub.sndhwm = 5
self.zmq_pub.bind('tcp://*:%d' % (self.zmq_port+1))
self.start()
self.subproc = None
self.msg = None
self.q_watcher = queue_watcher(self.input_q, self.process_msg)
if init_config:
d = {'command': 'rx-start', 'data': init_config}
msg = gr.message().make_from_string(json.dumps(d), -4, 0, 0)
self.input_q.insert_tail(msg)
def publish(self, msg):
t = msg.type()
s = msg.to_string()
a = msg.arg1()
self.zmq_pub.send(json.dumps({'command': s, 'data': a, 'msgtype': t}))
def check_subproc(self): # return True if subprocess is active
if not self.subproc:
return False
rc = self.subproc.poll()
if rc is None:
return True
else:
self.subproc.wait()
self.subproc = None
return False
def process_msg(self, msg):
def make_command(options, config_file):
trunked_ct = [True for x in options._js_config['channels'] if x['trunked']]
total_ct = [True for x in options._js_config['channels']]
if trunked_ct and len(trunked_ct) != len(total_ct):
self.msg = 'no suitable backend found for this configuration'
return None
if not trunked_ct:
self.backend = '%s/%s' % (os.getcwd(), 'multi_rx.py')
opts = [self.backend]
filename = '%s%s.json' % (CFG_DIR, config_file)
opts.append('--config-file')
opts.append(filename)
return opts
types = {'costas-alpha': 'float', 'trunk-conf-file': 'str', 'demod-type': 'str', 'logfile-workers': 'int', 'decim-amt': 'int', 'wireshark-host': 'str', 'gain-mu': 'float', 'phase2-tdma': 'bool', 'seek': 'int', 'ifile': 'str', 'pause': 'bool', 'antenna': 'str', 'calibration': 'float', 'fine-tune': 'float', 'raw-symbols': 'str', 'audio-output': 'str', 'vocoder': 'bool', 'input': 'str', 'wireshark': 'bool', 'gains': 'str', 'args': 'str', 'sample-rate': 'int', 'terminal-type': 'str', 'gain': 'float', 'excess-bw': 'float', 'offset': 'float', 'audio-input': 'str', 'audio': 'bool', 'plot-mode': 'str', 'audio-if': 'bool', 'tone-detect': 'bool', 'frequency': 'int', 'freq-corr': 'float', 'hamlib-model': 'int', 'udp-player': 'bool', 'verbosity': 'int'}
self.backend = '%s/%s' % (os.getcwd(), 'rx.py')
opts = [self.backend]
for k in [ x for x in dir(options) if not x.startswith('_') ]:
kw = k.replace('_', '-')
val = getattr(options, k)
if kw not in types.keys():
self.msg = 'make_command: unknown option: %s %s type %s' % (k, val, type(val))
return None
elif types[kw] == 'str':
if val:
opts.append('--%s' % kw)
opts.append('%s' % (val))
elif types[kw] == 'float':
opts.append('--%s' % kw)
if val:
opts.append('%f' % (val))
else:
opts.append('%f' % (0))
elif types[kw] == 'int':
opts.append('--%s' % kw)
if val:
opts.append('%d' % (val))
else:
opts.append('%d' % (0))
elif types[kw] == 'bool':
if val:
opts.append('--%s' % kw)
else:
self.msg = 'make_command: unknown2 option: %s %s type %s' % (k, val, type(val))
return None
return opts
msg = json.loads(msg.to_string())
if msg['command'] == 'rx-start':
if self.check_subproc():
self.msg = 'start command failed: subprocess pid %d already active' % self.subproc.pid
return
options = rx_options(msg['data'])
if getattr(options, '_js_config', None) is None:
self.msg = 'start command failed: rx_options: unable to initialize config=%s' % (msg['data'])
return
options.verbosity = self.verbosity
options.terminal_type = 'zmq:tcp:%d' % (self.zmq_port)
cmd = make_command(options, msg['data'])
if cmd:
self.subproc = subprocess.Popen(cmd)
elif msg['command'] == 'rx-stop':
if not self.check_subproc():
self.msg = 'stop command failed: subprocess not active'
return
if msg['data'] == 'kill':
self.subproc.kill()
else:
self.subproc.terminate()
elif msg['command'] == 'rx-state':
d = {}
if self.check_subproc():
d['rx-state'] = 'subprocess pid %d active' % self.subproc.pid
else:
d['rx-state'] = 'subprocess not active, last msg: %s' % self.msg
msg = gr.message().make_from_string(json.dumps(d), -4, 0, 0)
if not self.output_q.full_p():
self.output_q.insert_tail(msg)
def run(self):
while self.keep_running:
js = self.zmq_sub.recv()
if not self.keep_running:
break
msg = gr.message().make_from_string(js, -4, 0, 0)
if not self.output_q.full_p():
self.output_q.insert_tail(msg)
class rx_options(object):
def __init__(self, name):
def map_name(k):
return k.replace('-', '_')
filename = '%s%s.json' % (CFG_DIR, name)
if not os.access(filename, os.R_OK):
sys.stderr.write('unable to access config file %s\n' % (filename))
return
config = byteify(json.loads(open(filename).read()))
dev = [x for x in config['devices'] if x['active']][0]
if not dev:
return
chan = [x for x in config['channels'] if x['active']][0]
if not chan:
return
options = object()
for k in config['backend-rx'].keys():
setattr(self, map_name(k), config['backend-rx'][k])
for k in 'args frequency gains offset'.split():
setattr(self, k, dev[k])
self.demod_type = chan['demod_type']
self.freq_corr = dev['ppm']
self.sample_rate = dev['rate']
self.plot_mode = chan['plot']
self.phase2_tdma = chan['phase2_tdma']
self.trunk_conf_file = filename
self._js_config = config
def http_main():
global my_backend
# command line argument parsing
parser = OptionParser()
parser.add_option("-c", "--config", type="string", default=None, help="config json name, without prefix/suffix")
parser.add_option("-e", "--endpoint", type="string", default="127.0.0.1:8080", help="address:port to listen on (use addr 0.0.0.0 to enable external clients)")
parser.add_option("-v", "--verbosity", type="int", default=0, help="message debug level")
parser.add_option("-p", "--pause", action="store_true", default=False, help="block on startup")
parser.add_option("-z", "--zmq-port", type="int", default=25000, help="backend sub port")
(options, args) = parser.parse_args()
# wait for gdb
if options.pause:
print 'Ready for GDB to attach (pid = %d)' % (os.getpid(),)
raw_input("Press 'Enter' to continue...")
input_q = gr.msg_queue(20)
output_q = gr.msg_queue(20)
backend_input_q = gr.msg_queue(20)
backend_output_q = gr.msg_queue(20)
my_backend = Backend(options, backend_input_q, backend_output_q, init_config=options.config)
server = http_server(input_q, output_q, options.endpoint)
q_watcher = queue_watcher(output_q, lambda msg : my_backend.publish(msg))
backend_q_watcher = queue_watcher(backend_output_q, lambda msg : process_qmsg(msg))
server.run()
if __name__ == '__main__':
http_main()