105 lines
2.9 KiB
Python
105 lines
2.9 KiB
Python
import socket
|
|
import time
|
|
import logging
|
|
import random
|
|
from owrx.config import PropertyManager
|
|
|
|
logger = logging.getLogger(__name__)
|
|
|
|
FEND = 0xC0
|
|
FESC = 0xDB
|
|
TFEND = 0xDC
|
|
TFESC = 0xDD
|
|
|
|
|
|
class DirewolfConfig(object):
|
|
def getConfig(self, port):
|
|
pm = PropertyManager.getSharedInstance()
|
|
|
|
config = """
|
|
ACHANNELS 1
|
|
|
|
CHANNEL 0
|
|
MYCALL {callsign}
|
|
MODEM 1200
|
|
|
|
KISSPORT {port}
|
|
AGWPORT off
|
|
""".format(
|
|
port=port, callsign=pm["aprs_callsign"]
|
|
)
|
|
|
|
if pm["aprs_igate_enabled"]:
|
|
config += """
|
|
IGSERVER {server}
|
|
IGLOGIN {callsign} {password}
|
|
""".format(
|
|
server=pm["aprs_igate_server"], callsign=pm["aprs_callsign"], password=pm["aprs_igate_password"]
|
|
)
|
|
|
|
if pm["aprs_igate_beacon"]:
|
|
(lat, lon) = pm["receiver_gps"]
|
|
lat = "{0}^{1:.2f}{2}".format(int(lat), (lat - int(lat)) * 60, "N" if lat > 0 else "S")
|
|
lon = "{0}^{1:.2f}{2}".format(int(lon), (lon - int(lon)) * 60, "E" if lon > 0 else "W")
|
|
|
|
config += """
|
|
PBEACON sendto=IG delay=0:30 every=60:00 symbol="igate" overlay=R lat={lat} long={lon} comment="OpenWebRX APRS gateway"
|
|
""".format(
|
|
lat=lat, lon=lon
|
|
)
|
|
|
|
return config
|
|
|
|
|
|
class KissClient(object):
|
|
@staticmethod
|
|
def getFreePort():
|
|
# direwolf has some strange hardcoded port ranges
|
|
while True:
|
|
try:
|
|
port = random.randrange(1024, 49151)
|
|
# test if port is available for use
|
|
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
|
|
s.bind(("localhost", port))
|
|
s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
|
|
s.close()
|
|
return port
|
|
except OSError:
|
|
pass
|
|
|
|
def __init__(self, port):
|
|
time.sleep(1)
|
|
self.socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
|
|
self.socket.connect(("localhost", port))
|
|
|
|
def read(self):
|
|
return self.socket.recv(1)
|
|
|
|
|
|
class KissDeframer(object):
|
|
def __init__(self):
|
|
self.escaped = False
|
|
self.buf = bytearray()
|
|
|
|
def parse(self, input):
|
|
frames = []
|
|
for b in input:
|
|
if b == FESC:
|
|
self.escaped = True
|
|
elif self.escaped:
|
|
if b == TFEND:
|
|
self.buf.append(FEND)
|
|
elif b == TFESC:
|
|
self.buf.append(FESC)
|
|
else:
|
|
logger.warning("invalid escape char: %s", str(input[0]))
|
|
self.escaped = False
|
|
elif input[0] == FEND:
|
|
# data frames start with 0x00
|
|
if len(self.buf) > 1 and self.buf[0] == 0x00:
|
|
frames += [self.buf[1:]]
|
|
self.buf = bytearray()
|
|
else:
|
|
self.buf.append(b)
|
|
return frames
|