I am trying to make a chatroom. Now I am working on my login screen.
After enter the username and password, if it is right, then the login screen should be closed and open another screen.(which should be run in anther class). If the password or username is wrong, then the window should be closed directly. But I don't know how to do that.
I try to write a Quit function in the class, then in login function, if it returns False, it should call Quit function. The problem is I don't know if I can call the function in a class from outside.
If I call Login.Quit() outside the class, it will say
TypeError: unbound method Quit() must be called with Login instance as first argument (got nothing instead)
I also want to know how to run to next class and open another window.
This is actually my homework, but I really need help. Please help me, thanks!
from Tkinter import *
import socket
########HelperFunction########
def chunkstring (block): #Use to make the block into chunks and count the sum of ASCII value of chunks
M = []
for i in range(0, 512, 32):
L = str((block[0 + i : 32 + i]))
sum = 0
for r in range(len(L)):
sum = sum + ord(L[r])
M.append(sum)
return M
def leftrotate(x, c):
return (x << c) & 0xFFFFFFFF | (x >> (32 - c) & 0x7FFFFFFF >> (32 - c))
########Connection########
def StartConnection (IPAddress, PortNumber): #Use to set up the connection between computers and servers
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.connect((IPAddress, PortNumber))
return s
def login (s, username, password): #Login Function
print username
print password
s.send('LOGIN ' + username + '\n')
data = s.recv(512)
List = data.split(" ") #send the commend and get something back
CH = List[2] # pick up the CHALLENGE code
CH = CH[:-2] # delete the last two unnecessary code
PD = password
message = PD + CH # combine password and CHALLENGE together
block = message + "1"
block = block + "0" * (512 - len(message) - 3 - 1) # add '0' to block and remain the space for last three digits
numLen = len(str(len(message)))
if numLen == 2: #If the password is very long, we should consider the last digits may be affected
block = block + "0" + str(len(message))
elif numLen == 3:
block = block + str(len(message))
M = chunkstring(block)
########## MD5
P = [7, 12, 17, 22, 7, 12, 17, 22, 7, 12, 17, 22, 7, 12, 17, 22,
5, 9, 14, 20, 5, 9, 14, 20, 5, 9, 14, 20, 5, 9, 14, 20,
4, 11, 16, 23, 4, 11, 16, 23, 4, 11, 16, 23, 4, 11, 16, 23,
6, 10, 15, 21, 6, 10, 15, 21, 6, 10, 15, 21, 6, 10, 15, 21]
K = [0xd76aa478, 0xe8c7b756, 0x242070db, 0xc1bdceee,
0xf57c0faf, 0x4787c62a, 0xa8304613, 0xfd469501,
0x698098d8, 0x8b44f7af, 0xffff5bb1, 0x895cd7be,
0x6b901122, 0xfd987193, 0xa679438e, 0x49b40821,
0xf61e2562, 0xc040b340, 0x265e5a51, 0xe9b6c7aa,
0xd62f105d, 0x02441453, 0xd8a1e681, 0xe7d3fbc8,
0x21e1cde6, 0xc33707d6, 0xf4d50d87, 0x455a14ed,
0xa9e3e905, 0xfcefa3f8, 0x676f02d9, 0x8d2a4c8a,
0xfffa3942, 0x8771f681, 0x6d9d6122, 0xfde5380c,
0xa4beea44, 0x4bdecfa9, 0xf6bb4b60, 0xbebfbc70,
0x289b7ec6, 0xeaa127fa, 0xd4ef3085, 0x04881d05,
0xd9d4d039, 0xe6db99e5, 0x1fa27cf8, 0xc4ac5665,
0xf4292244, 0x432aff97, 0xab9423a7, 0xfc93a039,
0x655b59c3, 0x8f0ccc92, 0xffeff47d, 0x85845dd1,
0x6fa87e4f, 0xfe2ce6e0, 0xa3014314, 0x4e0811a1,
0xf7537e82, 0xbd3af235, 0x2ad7d2bb, 0xeb86d391]
#Initialize variables
a0 = 0x67452301
b0 = 0xefcdab89
c0 = 0x98badcfe
d0 = 0x10325476
A = a0
B = b0
C = c0
D = d0
#Mainloop
for i in range(0, 64):
if i >= 0 and i <= 15:
F = (B & C) | ((~ B) & D)
F = F & 0xFFFFFFFF
g = i
elif i >= 16 and i <= 31:
F = (D & B) | ((~ D) & C)
F = F & 0xFFFFFFFF
g = (5 * i + 1) % 16
elif i >= 32 and i <= 47:
F = B ^ C ^ D
F = F & 0xFFFFFFFF
g = (3 * i + 5) % 16
elif i >= 48 and i <= 63:
F = C ^ (B | (~ D))
F = F & 0xFFFFFFFF
g = (7 * i) % 16
dTemp = D
D = C
C = B
B = B + leftrotate((A + F + K[i] + M[g]), P[i])
B = B & 0xFFFFFFFF
A = dTemp
#Add this chunk's hash to result so far:
a0 = (a0 + A) & 0xFFFFFFFF
b0 = (b0 + B) & 0xFFFFFFFF
c0 = (c0 + C) & 0xFFFFFFFF
d0 = (d0 + D) & 0xFFFFFFFF
result = str(a0) + str(b0) + str(c0) + str(d0)
s.send("LOGIN " + username + " " + result + "\n") #send messagedigest to server
reply = s.recv(512)
print reply
if "Successful" in reply:
return True
else:
Login.Quit()
return False
########Interface#########
class Login(Frame):
def __init__(self, master):
frame = Frame(master)
frame.pack()
First.geometry("250x250")
self.lab1 = Label(frame, text = "Username")
self.lab1.grid(row = 0, column = 125)
self.ent1 = Entry(frame)
self.ent1.grid(row = 1, column = 125)
self.lab2 = Label(frame, text = "Password")
self.lab2.grid(row = 2, column = 125)
self.ent2 = Entry(frame, show = "*")
self.ent2.grid(row = 3, column = 125)
self.button = Button(frame, text = "OK", command = self.Submit)
self.button.grid(row = 5, column = 125)
def Submit(self):
username = self.ent1.get()
password = self.ent2.get()
login(ss, username, password)
def Quit(self):
self.Login.quit()
First = Tk()
First.title("Login")
Login(First)
ss = StartConnection("86.36.34.215", 15112)
First.mainloop()
