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Client.py
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Client.py
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from tkinter import *
from tkinter.ttk import *
from Crypto.Cipher import DES
from Crypto.Hash import BLAKE2s
from Crypto import Random
#from twisted.internet import tksupport, reactor, address
import socket
import _thread
# need to add encryption methods, need some kind of log in feature.
class client(Frame):
def __init__(self, root):
Frame.__init__(self, root)
self.root = root
self.initUI()
self.buffersize = 4096
self.serverStatus = 0
self.serverSoc = None
self.allClients = {}
self.counter = 0
self.encrypted = 0
# self.preKey = passCode
# self.key = BLAKE2s.new(digest_bits=64,)
# self.key.update(bytes(passCode, encoding = 'utf-8'))
# self.eKey = self.key.digest()
# self.cipher = DES.new(self.eKey, DES.MODE_OFB)
# self.mode = DES.MODE_OFB
# place holder for key, take passcode parameter and generate key here or in main.
#initialize the User Interface
def initUI(self):
self.root.title("phase I p2p client")
ScreenX = self.root.winfo_screenwidth()
ScreenY = self.root.winfo_screenheight()
self.Framex = 800
self.Framey = 600
Frame_pos_x = (ScreenX - self.Framex)/2
Frame_pos_y = (ScreenY - self.Framey)/2
self.root.geometry("%dx%d+%d+%d" % (self.Framex, self.Framey, Frame_pos_x, Frame_pos_y))
self.root.resizable(width=False, height=False)
paddingx = 10
paddingy = 10
parentFrame = Frame(self.root)
parentFrame.grid(padx=paddingx, pady=paddingy, stick=E+W+N+S)
igroup = Frame(parentFrame)
serverLabel = Label(igroup, text="Set: ")
self.passCode = StringVar()
self.passCode.set("Password: ")
passField = Entry(igroup, width=10, textvariable=self.passCode)
passFieldLabel = Label(igroup, text="PassCode:")
passCodeSetter = Button(igroup, text="Enter", width=10, command=self.setPassCode)
self.nameVar = StringVar()
self.nameVar.set("SBH")
nameField = Entry(igroup, width=10, textvariable=self.nameVar)
self.serverIPVar = StringVar()
self.serverIPVar.set("127.0.0.1")
serverIPField = Entry(igroup, width=15, textvariable=self.serverIPVar)
self.serverPortVar = StringVar()
self.serverPortVar.set("8088")
serverPortField = Entry(igroup, width=5, textvariable=self.serverPortVar)
serverSetButton = Button(igroup, text="Set", width=10, command=self.handleSetServer)
addClientLabel = Label(igroup, text="Add Friend")
self.clientIPVar = StringVar()
self.clientIPVar.set("127.0.0.1")
clientIPField = Entry(igroup, width=15, textvariable=self.clientIPVar)
self.clientPortVar = StringVar()
self.clientPortVar.set("8089")
clientPortField = Entry(igroup, width=5, textvariable=self.clientPortVar)
clientSetButton = Button(igroup, text="Add", width=10, command=self.handleAddClient)
serverLabel.grid(row=0, column=0)
nameField.grid(row=0, column=1)
passField.grid(row=1, column=6)
passFieldLabel.grid(row=1, column=5)
serverIPField.grid(row=0, column=2)
serverPortField.grid(row=0, column=3)
serverSetButton.grid(row=0, column=4, padx=5)
passCodeSetter.grid(row=1, column=8)
addClientLabel.grid(row=0, column=5)
clientIPField.grid(row=0, column=6)
clientPortField.grid(row=0, column=7)
clientSetButton.grid(row=0, column=9, padx=5)
readChatGroup = Frame(parentFrame)
self.receivedChats = Text(readChatGroup, bg="white", width=60, height=30, state=DISABLED)
self.friends = Listbox(readChatGroup, bg="white", width=30, height=30)
self.receivedChats.grid(row=0, column=0, sticky=W+N+S, padx=(0, 10))
self.friends.grid(row=0, column=1, sticky=E+N+S)
writeChatGroup = Frame(parentFrame)
self.chatVar = StringVar() #changed from StringVar()
self.ChatField = Entry(writeChatGroup, width=80, textvariable=self.chatVar)
sendChatButton = Button(writeChatGroup, text="Send", width=10, command=self.handleSendChat)
self.ChatField.grid(row=0, column=0, sticky=W)
sendChatButton.grid(row=0, column=1, padx=5)
self.statusLabel = Label(parentFrame)
bottomLabel = Label(parentFrame, text="This is version .01")
igroup.grid(row=0, column=0)
readChatGroup.grid(row=1, column=0)
writeChatGroup.grid(row=2, column=0, pady=10)
self.statusLabel.grid(row=3, column=0)
bottomLabel.grid(row=4, column=0, pady=10)
def setPassCode(self):
self.passCode = self.passCode.get().strip()
self.key = BLAKE2s.new(digest_bits=64,)
self.key.update(bytes(self.passCode, encoding = 'utf-8'))
self.eKey = self.key.digest()
self.cipher = DES.new(self.eKey, DES.MODE_OFB)
self.mode = DES.MODE_OFB
# place holder for key, take passcode parameter and generate key here or in main.
self.encrypted = 1
def handleSetServer(self):
if self.encrypted == 0:
return
if self.serverSoc != None:
self.serverSoc.close()
self.serverSoc = None
self.serverStatus = 0
serveraddr = (self.serverIPVar.get().replace('',''), int(self.serverPortVar.get().replace(' ',' ')))
try:
self.serverSoc = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
self.serverSoc.bind(serveraddr)
self.serverSoc.listen(5)
self.setStatus("Server listening on %s:%s" % serveraddr)
_thread.start_new_thread(self.listenClients, ())
self.serverStatus = 1
self.name = self.nameVar.get().replace(' ',' ')
if self.name == '':
self.name = "%s:%s" % serveraddr
except:
self.setStatus("Error initializing server")
def listenClients(self):
while 1:
clientsoc, clientaddr = self.serverSoc.accept()
self.setStatus("Client connected from %s:%s:" % clientaddr)
self.addClient(clientsoc, clientaddr)
_thread.start_new_thread(self.handleClientMessages, (clientsoc, clientaddr))
self.serverSoc.close()
def handleAddClient(self):
if self.serverStatus == 0:
self.setStatus("Set Server Address First")
return
clientaddr = (self.clientIPVar.get().replace(' ',' '), int(self.clientPortVar.get().replace(' ',' ')))
try:
clientsoc = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
clientsoc.connect(clientaddr)
self.setStatus("connected to client on %s:%s" % clientaddr)
self.addClient(clientsoc, clientaddr)
_thread.start_new_thread(self.handleClientMessages, (clientsoc, clientaddr))
except:
self.setStatus("Error connecting to client")
def handleClientMessages(self, clientsoc, clientaddr):
while 1:
try:
data = clientsoc.recv(self.buffersize)
if not data:
self.addChat("no data")
break
#self.addChat("them", str(data) )
cText = data[:len(data)-8]
initVector = data[len(cText):]
des2 = DES.new(self.eKey, self.mode, initVector)
pText = des2.decrypt(cText)
self.addChat("%s:%s[Encrypted]" % clientaddr, str(data))
self.addChat("%s:%s" % clientaddr, str(pText.decode('utf-8')))
except:
self.addChat("exception occured")
break
self.removeClient(clientsoc, clientaddr)
clientsoc.close()
self.setStatus("Client disconnected from %s:%s" % clientaddr)
def handleSendChat(self):
if self.serverStatus == 0:
self.setStatus("Set server address first")
return
msg = self.chatVar.get().strip()
if msg == '':
return
self.addChat("me", msg)
iv = Random.get_random_bytes(8)
des = DES.new(self.eKey, self.mode,iv)
cText = des.encrypt(msg.encode('utf-8'))
# initVector = str(iv)
# initVector.encode('utf-8')
data = cText + iv
self.addChat('me[encrypted]', str(cText))
for client in self.allClients.keys():
client.send(data)
def addChat(self,client,msg):
self.receivedChats.config(state=NORMAL)
self.receivedChats.insert("end", client + ": " +msg+"\n" )
self.receivedChats.config(state=DISABLED)
def setStatus(self, msg):
self.statusLabel.config(text=msg)
print(msg)
def addClient(self, clientsoc, clientaddr):
self.allClients[clientsoc]=self.counter
self.counter += 1
self.friends.insert(self.counter, "%s:%s" % clientaddr)
def removeClient(self, clientsoc, clientaddr):
print(self.allClients)
self.friends.delete(self.allClients[clientsoc])
del self.allClients[clientsoc]
print(self.allClients)
def encryptionHandler(self, msg):
cipherText = self.cipher.iv + self.cipher.encrypt(bytes(msg, encoding='utf-8'))
def decryptionHandler(self, cipherText):
cipherText.decode('utf-8')
data = self.cipher.decrypt(cipherText)
def main():
# make it so main opens a window and prompts for passcode, then call client with pass code as a parameter
root = Tk()
# passCode = input("enter pcode: ")
app = client(root)
root.mainloop()
if __name__ == '__main__':
main()