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LanChat.pyw
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LanChat.pyw
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#!/usr/bin/env python3
try:
from tkinter import *
from tkinter import messagebox, simpledialog
except:
input('It appears, Tkinter Graphics is not installed into the python path. Please use the CLI version of this program.')
exit()
from threading import Thread, Lock
from socket import *
from time import ctime, sleep
from os import system
lock=Lock()
termcode='TERMINATE'
checkstr='TryzSOCKTEST'
defport=45565
printqueue=[]
class server(Thread):#manages all messages
def __init__(self, *args): #first argument be port to host server
#initialize stuff
Thread.__init__(self)
self.sock=socket(2, 2)
self.clients=[] #all messages to server would be forwarded to all the clients saved in this list
self.daemon=True;
#selecting a port
if len(args)==0:
for x in range(45565, 55565):
try:
self.sock.bind(('', x))
self.port=x
break
except Exception as e: pass#print(e)
if len(args)==1:
self.port=args[0]
self.sock.bind(('', self.port))
self.CONNECTTOTHISIP=gethostbyname(gethostname())
def run(self):
message=''
while True:
# print('entered server loop')###'''
data, addr=self.sock.recvfrom(1024)
# print('received message')###'''
if str(data)[2:2+len(checkstr)]==checkstr: #for client initialization and confirmation
# print('checkstring detected')###'''
self.sock.sendto(bytes(checkstr, 'utf-8'), addr)
#with lock: print('checkfrom', addr)###'''
continue
elif addr not in self.clients:
# print('address registration')###'''
self.clients.append(addr)
# self.sock.sendto(bytes(self.clients, 'utf-8'), addr)
message=ctime()[11:-5]+' : CONNECTED < '+str(data)[2:-1]+' '+str(addr)###'''
# with lock: print(message)
elif str(data)[2:2+len(termcode)]==termcode: #when users leave
# print('termcode detected')###'''
self.clients.remove(addr)
message=ctime()[11:-5]+' : DISCONNECTED < '+str(data)[3+len(termcode):-1]+' '+str(addr)###
# with lock:print(message);#print(self.clients)
else:
message=ctime()[11:-5]+' : '+str(data)[2:-1]#+' '+str(addr)###'''
# with lock: print(message)
try:
# print('broadcasting messages')###'''
for x in self.clients:
if x != addr:
self.sock.sendto(bytes(message, 'utf-8'), (x[0], x[1]+1))#initiate hostclient thread to send messages to clients.
except Exception as e:print('Error while broadcast', e)
self.sock.close()
self.sock=socket(2, 2)
self.sock.bind(('', self.port))
if not self.clients: break;
try: serverclient.join(1.0)
except: pass
try: self.sock.close()
except: pass
def servexists(clientsock, ip, port, username='anonymous', timeout=1):
clientsock.sendto(bytes(checkstr+' '+username, 'utf-8'), (ip, port))
clientsock.settimeout(timeout)
if str(clientsock.recvfrom(1024)[0])[2:-1]==checkstr: return True
return False
class clientserver(Thread):
def __init__(self, *args, root=None):#args=ip, master
Thread.__init__(self)
#Frame.__init__(self, root)
self.port=args[0]
self.root=root
# print('clientserver initialized')
def run(self):
global printqueue
while True:
self.sock=socket(2, 2)
self.sock.bind(('', self.port))
# print('clientserver started')
data, addr=self.sock.recvfrom(1024)
self.sock.close()
if str(data)[2:2+len(termcode)]==termcode: break
printqueue.insert(0, str(data)[2:-1])
# print(str(data)[2:-1])
class app(Frame):
def __init__(self, root=None):
self.root=root
Frame.__init__(self, root)
self.stuff()
def output(self, st, color='grey', end='\n'):
# print('IM RECEIVING SHIT')
self.text1.config(state='normal')
self.text1.insert(END, st+end)
self.text1.config(state='disabled')
self.text1.see('end')
self.text2.focus()
def checkqueue(self):
global printqueue
while printqueue:
self.output(printqueue.pop())
# self.output('IMAGINE QUEUE HAS BEEN OUTPUTTED')
# messagebox.showinfo('TEST', 'OUT THE CHECKQUEUE LOOP')
self.theafter=self.root.after(10, self.checkqueue)
def thequit(self):
try:self.sock.close();
except:pass
try:self.listener.join(1.0)
except:pass
try:self.theserver.join()
except:pass
self.destroy()
quit()
def clientinput(self, event):
text=self.text2.get();
# print('Enter detected :', text)
self.text2.delete(0, len(text))
self.output(text)
if not text:
self.sock.sendto(bytes(termcode+' '+self.username, 'utf-8'), (self.masterip,self.port))
self.text2.config(state='disabled')
#TERMINATE CLIENTSERVER
self.sock.sendto(bytes(termcode, 'utf-8'), (gethostbyname(gethostname()), self.sock.getsockname()[1]+1))
self.listener.join(1.0)
self.root.after_cancel(self.theafter)
self.sock.close()
self.thequit()
else: self.sock.sendto(bytes(text+' < '+self.username, 'utf-8'), (self.masterip, self.port))
def stuff(self):
self.root.title('LANCHAT')
self.root.minsize(400, 100)
self.top=Frame(self.root, background='grey')
self.text2=Entry(self.root)
self.text2.bind('<Return>', self.clientinput)
self.text2.pack(side=BOTTOM, fill=BOTH, expand=False)
self.top.pack(side=TOP, fill=BOTH, expand=True)
self.text1=Text(self.top, background='grey')
self.scroll=Scrollbar(self.top)
self.text1.config(yscrollcommand=self.scroll.set)
self.text1.config(state="disabled")
self.scroll.config(command=self.text1.yview)
self.text1.pack(side=LEFT, fill=BOTH, expand=True)
self.scroll.pack(side=RIGHT, fill=Y)
def themain(self):
try:
self.root.focus_set()
servorclient=simpledialog.askstring('Configure Master', 'Enter IP of Master\nPress Enter to start Master on this system', parent=self.root)
self.masterip=servorclient
if servorclient==None: quit()
elif servorclient=='':
self.theserver=server();self.theserver.start()
self.masterip=self.theserver.CONNECTTOTHISIP
self.output('On Linux systems make sure that /etc/hosts does not contain 127.0.1.1 entries\nConnect clients to Master IP : %s'%self.masterip)
self.sock=socket(2, 2)
self.username=simpledialog.askstring('Username', 'Select a username', parent=self.root)
messagebox.showinfo('', 'Hello %s, Send messages to the network now. Send a blank text to Exit.\n'%self.username)
self.text2.focus_set()
#select a port
for x in range(45565, 55565):
if servexists(self.sock, self.masterip, x, username=self.username, timeout=0.5):
self.port=x;
break
self.root.title('LANCHAT '+self.username+'@'+self.masterip+':'+str(self.port))
self.sock.sendto(bytes(self.username, 'utf-8'), (self.masterip, self.port))
# INITIATE CLIIENTSERVER
# print('yoma', gethostbyname(gethostname()), self.sock.getsockname()[1]+1, str(self))
# messagebox.showinfo('TEST', 'BEFORE CLIENT SERVER INITIALIZATION')
self.listener=clientserver(self.sock.getsockname()[1]+1, root=self)
# messagebox.showinfo('TEST', 'AFTER CLIENTSERVER INITIALIZATION')
self.listener.start()
# messagebox.showinfo('TEST', 'CLIENTSERVER LISTENER STARTED')
self.checkqueue()
# messagebox.showinfo('TEST', 'CHECKING FOR PRINTQUEUE')
except Exception as e:
messagebox.showerror('Error', 'An error has occured.\n'+str(e)+'\nContact @_mad_haven')
# print('bleh')
quit()
try:
theroot=Tk()
th=app(theroot)
th.themain()
th.pack()
theroot.mainloop()
exit()
except Exception as e:print(e)