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# This code was contributed by Christof, DJ4CM. Many Thanks!!
# Modified November 2024 by N2ADR to remove deprecated telnetlib module.
import threading
import socket
import time
import quisk_conf_defaults as conf
class DxEntry:
def __init__(self):
self.info = []
def getFreq(self):
return self.freq
def getDX(self):
return self.dx
def getSpotter(self, index):
return self.info[index][0]
def getTime(self, index):
return self.info[index][1]
def getLocation(self, index):
return self.info[index][2]
def getComment(self, index):
return self.info[index][3]
def getLen(self):
return len(self.info)
def equal(self, element):
if element.getDX() == self.dx:
return True
else:
return False
def join (self, element):
for i in range (0, len(element.info)):
self.info.insert(0, element.info[i])
length = len(self.info)
# limit to max history
if length > 3:
del (self.info[length-1])
self.timestamp = max (self.timestamp, element.timestamp)
def isExpired(self):
return time.time()-self.timestamp > conf.dxClExpireTime * 60
def parseMessage(self, message):
words = message.split()
sTime = ''
locator = ''
comment = ''
if len(words) > 3 and words[0].lower() == 'dx' and words[1].lower() == 'de':
spotter = words[2].strip(':')
self.freq = int(float(words[3])*1000)
self.dx = words[4]
for index in range (5, len(words)):
word = words[index]
try:
if sTime != '':
locator = word.strip('\07')
#search time
if word[0:3].isdigit() and word[4].isalpha():
sTime = word.strip('\07')
sTime = sTime[0:2]+':'+sTime[2:4]+ ' UTC'
if sTime == '':
if comment != '':
comment += ' '
comment += word
except:
pass
self.info.insert(0, (spotter, sTime, locator, comment))
self.timestamp = time.time()
#print(self.dx, self.freq, spotter, sTime, locator, comment)
return True
return False
class DxCluster(threading.Thread):
def __init__(self):
self.error = 'Starting'
self.dxSpots = []
threading.Thread.__init__(self)
self.doQuit = threading.Event()
self.doQuit.clear()
self.dxLock = threading.Lock()
self.addr = conf.dxClHost + ':' + str(conf.dxClPort)
self.msg_no_spots = "No DX Cluster data from " + self.addr
self.msg_one_spot = '1 DX spot received from ' + self.addr
self.msg_spots = ' DX spots received from ' + self.addr
def run(self):
self.telnetConnect()
if self.error:
self.sock.close()
return
while not self.doQuit.isSet():
try:
by = self.sock.recv(1024)
except TimeoutError:
continue
except:
by = b''
if by:
with self.dxLock:
self.bytes += by
else:
self.sock.close()
self.error = "Restarting " + self.addr
time.sleep(2)
if not self.doQuit.isSet():
self.telnetConnect()
if self.error:
self.sock.close()
return
self.sock.close()
def telnetConnect(self):
self.bytes = bytearray(0)
self.error = 'Starting'
self.sock = socket.socket()
self.sock.settimeout(20)
try:
self.sock.connect( (conf.dxClHost, conf.dxClPort) )
except:
self.error = "Failed to connect to " + self.addr
return
self.sock.settimeout(1)
for i in range(10):
try:
self.bytes += self.sock.recv(1024)
except:
pass
if b"login:" in self.bytes:
break
else:
self.error = 'No "login:" prompt from ' + self.addr
return
self.sock.sendall(conf.user_call_sign.encode('utf-8', errors='ignore') + b"\r\n")
if conf.dxClPassword:
for i in range(10):
try:
self.bytes += self.sock.recv(1024)
except:
pass
if b"Password:" in self.bytes:
break
else:
self.error = 'No "Password:" prompt from ' + self.addr
return
self.sock.sendall(conf.dxClPassword.encode('utf-8', errors='ignore') + b"\r\n")
self.error = ''
self.bytes = bytearray(0)
def Poll(self):
with self.dxLock:
index = self.bytes.find(b"\n")
if index >= 0:
message = self.bytes[0:index + 1]
self.bytes = self.bytes[index + 1:]
else:
return
message = message.decode(encoding='utf-8', errors='replace')
dxEntry = DxEntry()
if dxEntry.parseMessage(message):
for i, listElement in enumerate(self.dxSpots):
if (listElement.equal(dxEntry)):
listElement.join (dxEntry)
return True
if listElement.isExpired():
del (self.dxSpots[i])
self.dxSpots.append(dxEntry)
return True
def stop(self):
self.doQuit.set()
def dxStatus(self):
if self.error:
return self.error
nSpots = len(self.dxSpots)
if nSpots == 0:
return self.msg_no_spots
elif nSpots == 1:
return self.msg_one_spot
return str(nSpots) + self.msg_spots
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