# Project#8 - Access Granted # Information - In this project, we're going to create a graphical user interface that requests a username... # And user password. If the username and user password matches a name and password located in the relative... # Text file, then the python program will instruct the RPI_no_RPI to activate the relay / deactivate a maglock # You're going to need to create a text file called "Passwords" in your local folder. # When you create it, open it and add your name and a password on the first line. # It should look like this: Patrick Mitchell 7667 # Add a few more names and passwords on subsequent lines if you want more names to have access # If you want to create awesome GUIs, I highly recommend this tutorial: https://www.youtube.com/watch?v=YXPyB4XeYLA from tkinter import * # Import GUY module import time # For delays import serial # For microcontroller communication import playsound # Why not incorporate some sound bites? We've done it before, let's do it again. root = Tk() # Needs to be first to great the GUI window root.title("Security Access") # Give the GUI a title root.geometry('270x270') # 300x300 pixel frame. Play with these numbers and see what happens! try: # Try to establish communication with the RPInoRPI board. if successful, only the 'try:' will be executed MCU = serial.Serial(port='COM10', baudrate=115200, timeout=0.01) # Timeout = 0.01. More on this later. time.sleep(1) # Wait 5 seconds. except: # If communication with the RPInoRPI could not be established, then perform the following instead: print('System Locked - Cannot communicate with MCU. Close this program, then reconnect to MCU and restart program') while True: # Forever loop. Close the program and start again. Check connection to the RPInoRPI pass # Do nothing def write_read(x): # This function acts to send data (x) to the RPInoRPI. Nothing more. MCU.write(bytes(x, 'utf-8')) # Write the value stored in 'x' to the RPInoRPI time.sleep(0.2) # Wait 0.2 seconds/200ms def buttonclick(number): # This function takes care of all buttons when pressed. # However, there is only one button on this GUI. global UsernameEntry # Set the UsernameEntry window as global variable. Now we can access it across functions. global PasswordEntry # Set the PasswordEntry window as global variable. Now we can access it across functions. global FeedbackEntry # The feedback entry window gives the user information. Nothing more. if number == 1: # 1 is the button associated with the "LOG IN" button. If pressed, run the following code: Name = UsernameEntry.get() # Grab the name in the UsernameEntry window and save it to 'Name' PW = PasswordEntry.get() # Grab the password in the PasswordEntry window and save it to 'PW' with open("C:/Users/patmxa/Passwords.txt", 'r+') as fp: # Open the text file. Use your own link. lines = fp.readlines() # read and store the text file in 'lines' SecurityFlag = 0 # This flag will tell the program if access was granted or denied for row in lines: # Check each row in 'lines' - Check every row in Passwords.txt if Name in row: # If the entered user name was in a row in the text file, then do the following: hold = row # Save the entire row hold = hold.replace('\n', '') # This is important. /n means newline, and we need it gone. # Otherwise only the last username/PW in the text file will work print(hold) # Print the row to the shell to see it (Comment out later as you see fit) hold = hold.replace(Name,'') # Replace the 'Name' saved above with nothing. Remove the name print(hold) # 'Hold' should now just be the password with a space before it. hold = hold.replace(' ', '') # Remove the space and replace it with nothing print(hold) # See the final sliced product - Just the remaining password if PW == hold: # If the entered password (PW+ equals the stored password, then... FeedbackEntry.configure(state='normal') # Make it so that we can make changes to the window value FeedbackEntry.delete(0, END) # Clear the feedback entry window FeedbackEntry.insert(INSERT,'Access Granted...') # print this to the feedback entry window root.update() # Update the GUI x = '5' # x is now '5', which is the deactivation value for the RPI_no_RPI write_read(x) # Send the RPI_no_RPI the value it needs to deactivate the mag lock time.sleep(10) # Wait 10 seconds FeedbackEntry.delete(0, END) # Clear the feedback entry window FeedbackEntry.configure(state='disable') # Make it so that we can make changes to the window value SecurityFlag = 1 # Set to 1, which will tell the program later on that access was granted if SecurityFlag == 0: # If the flag never changed from 0 to 0, then access was denied. Do the following: x = '4' # Send the RPI_no_RPI a value that indicates an incorrect set of credentials write_read(x) # Write to RPI_no_RPI FeedbackEntry.configure(state='normal') # Make it so that we can make changes to the window value FeedbackEntry.delete(0, END) # Clear the window FeedbackEntry.insert(INSERT,'Access Denied...') # Print this to the window root.update() # Update the GUI. Without this, the above FeedbackEntry print won't work time.sleep(3) # Want 3 seconds FeedbackEntry.delete(0, END) # Clear the window FeedbackEntry.configure(state='disable') # Make it so that we can make changes to the window value fp.close() # Close the file # This is where we set up our GUI Credentials_Label = Label(root, text='Enter Credentials') # A Labal is basically a title. This is at the top of the GUI Credentials_Label.configure(justify='left') # Set the justification to left. Can be center or right Spacer_Label1 = Label(root, text='') # This label is empty. We're going to use it as a small spacer Name_Label = Label(root, text='Enter Name: ') # Create a label for the USER NAME entry window Name_Label.configure(justify='left') # Left Justify it UsernameEntry = Entry(root, width=40, borderwidth=5) # Create a USER NAME entry window PW_Label = Label(root, text='Enter Password: ') # Do the same thing for a password entry window label PW_Label.configure(justify='left') # Left Justify PasswordEntry = Entry(root, width=40, borderwidth=5) # Create the password entry window AccessButton = Button(root, text='LOG IN', padx=40, pady=5, command=lambda: buttonclick(1)) # This is for button#1 # When you press this button, the program opens a text file containing usernames and passwords that have access... # It reads it, and then determines if the USERNAME and PW entries match any of the access matches in the text file FeedbackLabel = Label(root, text='System Feedback: ') # Create a label for the feedback entry window FeedbackEntry = Entry(root, width=40, borderwidth=5) # Create the feedback entry window FeedbackEntry.configure(state='disable') # Make it so that you can't manually change what is in this window. UsernameEntry.configure(state='normal') # Make it so that you can manually change what is in this window. PasswordEntry.configure(state='normal') # Make it so that you can manually change what is in this window. # GRID SETTINGS # Allocate the area for the operator name and email inputs. Credentials_Label.grid(row=0,column=0) # The following four attributes are the email and name entry Spacer_Label1.grid(row=1,column=0) Name_Label.grid(row=2,column=0) UsernameEntry.grid(row=3, column=0, padx=5, pady=5) PW_Label.grid(row=4,column=0) PasswordEntry.grid(row=5, column=0, padx=5, pady=5) AccessButton.grid(row=6, column=0, padx=5, pady=5) FeedbackLabel.grid(row=7, column=0) FeedbackEntry.grid(row=8, column=0) root.mainloop() # Display everything on the screen and loop until you exit