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encryptare + adaugare de imagini

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This commit is contained in:
andrei-mihnea-cerbu
2024-01-19 04:05:05 +02:00
parent 67b7a241d7
commit 2d4cca0e80
11 changed files with 167 additions and 48 deletions
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messenger_gui/app/encryption/AESEncryptor.py
+30
View File
@@ -0,0 +1,30 @@
from cryptography.hazmat.backends import default_backend
from cryptography.hazmat.primitives.ciphers import Cipher, algorithms, modes
from cryptography.hazmat.primitives import padding
class AESEncryptor:
def __init__(self, key):
if not isinstance(key, bytes):
key = key.encode('utf-8') # Assuming UTF-8 encoding, adjust if needed
if len(key) != 16:
raise ValueError("AES key must be 16 bytes in length")
self.key = key
def encrypt(self, plaintext):
cipher = Cipher(algorithms.AES(self.key), modes.ECB(), backend=default_backend())
encryptor = cipher.encryptor()
plaintext = plaintext.encode('utf-8')
padder = padding.PKCS7(algorithms.AES.block_size).padder()
padded_plaintext = padder.update(plaintext) + padder.finalize()
ciphertext = encryptor.update(padded_plaintext) + encryptor.finalize()
return ciphertext.hex()
def decrypt(self, ciphertext):
cipher = Cipher(algorithms.AES(self.key), modes.ECB(), backend=default_backend())
decryptor = cipher.decryptor()
ciphertext = bytes.fromhex(ciphertext)
decrypted_data = decryptor.update(ciphertext) + decryptor.finalize()
unpadder = padding.PKCS7(algorithms.AES.block_size).unpadder()
unpadded_data = unpadder.update(decrypted_data) + unpadder.finalize()
return unpadded_data.decode('utf-8')
messenger_gui/app/encryption/__init__.py
+1
View File
@@ -0,0 +1 @@
from .AESEncryptor import AESEncryptor
messenger_gui/app/http/request_builder.py
-1
View File
@@ -13,7 +13,6 @@ class RequestBuilder:
__method (str): HTTP method (GET, POST, ...)
"""
def __init__(self):
self.__url = ""
self.__headers = {}
messenger_gui/app/main_application.py
+27
View File
@@ -1,9 +1,13 @@
import json
import tkinter as tk
from app.http import request_builder
from app.views.login import LoginView
from app.views.initial import InitialView
from app.views.signup import SignupView
from app.views.main_page import MainPageView
from app.encryption import AESEncryptor
import json
class MainApplication(tk.Tk):
@@ -20,9 +24,21 @@ class MainApplication(tk.Tk):
self.current_logged_user = {}
self.define_http_params()
self.encryptor = self.initialize_encryptor()
self.current_view = None
self.change_to_initial_view()
def define_http_params(self):
self.url = "http://localhost:8000/encryption/get_private_key"
self.headers = {
"Content-Type": "application/json",
"Authorization_Key": "messenger"
}
self.method = "GET"
self.params = None
def change_to_initial_view(self):
self.change_view(InitialView(self))
@@ -51,3 +67,14 @@ class MainApplication(tk.Tk):
self.current_logged_user['id'] = data['info']['id']
self.current_logged_user['username'] = data['info']['username']
self.current_logged_user['email'] = data['info']['email']
def initialize_encryptor(self):
request_builder.set_url(self.url)
request_builder.set_headers(self.headers)
request_builder.set_method(self.method)
result = request_builder.build().make_request()
json_data = json.loads(result.text)
private_key = json_data.get("private_key", None)
return AESEncryptor(private_key)
messenger_gui/app/views/chat.py
+32 -2
View File
@@ -1,7 +1,10 @@
import base64
import json
import os
import tkinter as tk
from app.http import request_builder
from app.views.message import MessageView
import tkinter.filedialog
class ChatWindow(tk.Toplevel):
@@ -9,13 +12,16 @@ class ChatWindow(tk.Toplevel):
This view is opened in a separate window and takes care of the communication between the two users. It receives
both the users' information and retrieves the conversation_url.
"""
def __init__(self, master=None, user_data=None, current_logged_user=None):
def __init__(self, master=None, encryptor=None, user_data=None, current_logged_user=None):
super().__init__(master)
self.user_data = user_data
self.current_logged_user = current_logged_user
self.define_get_conversation_url_params()
self.encryptor = encryptor
self.geometry("700x700")
self.conversation_url = self.get_conversation_url()
@@ -46,7 +52,7 @@ class ChatWindow(tk.Toplevel):
self.params = {}
self.body = {
'conversation_url': self.conversation_url,
'message': message,
'message': self.encryptor.encrypt(message),
'message_type': message_type,
'sender': self.current_logged_user['id']
}
@@ -59,6 +65,7 @@ class ChatWindow(tk.Toplevel):
# Display existing conversation
for message in conversation:
message['message'] = self.encryptor.decrypt(message['message'])
message_view = MessageView(self.messages_frame, message, self.current_logged_user, self.user_data)
message_view.pack()
@@ -74,6 +81,28 @@ class ChatWindow(tk.Toplevel):
self.send_button = tk.Button(self.input_frame, text="Send", command=lambda: self.send_message())
self.send_button.pack(side=tk.RIGHT)
self.select_photo_button = tk.Button(self.input_frame, text="Select Photo", command=self.select_photo)
self.select_photo_button.pack(side=tk.LEFT)
def select_photo(self):
initial_dir = os.path.expanduser("~")
file_path = tkinter.filedialog.askopenfilename(
initialdir=initial_dir, filetypes=[("Image files", "*.png;*.jpg;*.jpeg;*.gif;*.bmp")])
with open(file_path, 'rb') as file:
file_content = file.read()
image_base64 = base64.b64encode(file_content).decode('utf-8')
self.define_send_message_params(image_base64, "image")
request_builder.set_url(self.url)
request_builder.set_body(self.body)
request_builder.set_headers(self.headers)
request_builder.set_method(self.method)
request_builder.set_params(self.params)
request_builder.build().make_request()
self.update_chat()
def update_chat(self):
"""
This function is scheduled each second to make a request to the API to retrieve the latest chat between the
@@ -85,6 +114,7 @@ class ChatWindow(tk.Toplevel):
self.define_get_conversation_params()
for message in self.get_conversation():
message['message'] = self.encryptor.decrypt(message['message'])
message_view = MessageView(self.messages_frame, message, self.current_logged_user, self.user_data)
message_view.pack()
messenger_gui/app/views/main_page.py
+5 -5
View File
@@ -26,11 +26,11 @@ class MainPageView(tk.Frame):
def create_widgets(self):
"""Takes care of the creation of the UI"""
# Create a main frame to center the user frame and button frame
main_frame = tk.Frame(self.master)
main_frame.pack(expand=True)
self.main_frame = tk.Frame(self)
self.main_frame.pack(expand=True)
# Create a frame to hold the user frames
user_frame_container = tk.Frame(main_frame)
user_frame_container = tk.Frame(self.main_frame)
user_frame_container.pack(side=tk.TOP, fill=tk.BOTH, expand=True)
users_data = self.get_user_list()
@@ -49,7 +49,7 @@ class MainPageView(tk.Frame):
user_frame_instance.grid(row=row, column=column, padx=10, pady=10)
# Create a frame to hold the buttons
button_frame = tk.Frame(main_frame)
button_frame = tk.Frame(self.main_frame)
button_frame.pack(side=tk.BOTTOM, fill=tk.BOTH, expand=True)
# Create buttons in the button frame
@@ -64,7 +64,7 @@ class MainPageView(tk.Frame):
def open_chat(self, user_data):
"""Opens a chat in a different window"""
# Pass both the clicked user data and the current logged user info to ChatWindow
chat_window = ChatWindow(self, user_data, self.master.current_logged_user)
chat_window = ChatWindow(self, self.master.encryptor, user_data, self.master.current_logged_user)
chat_window.mainloop() # Main loop for the new window
def get_user_list(self):
messenger_gui/app/views/message.py
+46 -40
View File
@@ -1,15 +1,10 @@
import tkinter as tk
import emoji
from PIL import Image, ImageTk
from PIL import Image, ImageTk, UnidentifiedImageError
import io
import base64
import emoji
class MessageView(tk.Frame):
"""
This view is the message that appears in main windows of the chat. This is configured to hold text and images.
"""
def __init__(self, master, message, current_logged_user, user_data, *args, **kwargs):
super().__init__(master, *args, **kwargs)
self.current_logged_user = current_logged_user
@@ -18,49 +13,49 @@ class MessageView(tk.Frame):
def create_widgets(self, message):
is_sent_by_current_user = 1
sender_name = None
if is_sent_by_current_user:
sender_name = self.current_logged_user['username']
else:
sender_name = self.user_data['username']
message_frame = tk.Frame(self) # Set a background color for the message frame
message_label = None
image_label = None
sender_name = (
self.current_logged_user["username"]
if is_sent_by_current_user
else self.user_data["username"]
)
message_frame = tk.Frame(self)
pack = None
match message['message_type']:
case 'text':
decoded_message = self.decode_emoji(f"sender: {sender_name}\nmessage: {message['message']}")
pack = tk.Label(message_frame, text=decoded_message, bg='white')
case 'image':
decoded_image = self.decode_image(message['message'])
match message["message_type"]:
case "text":
decoded_message = self.decode_emoji(
f"sender: {sender_name}\nmessage: {message['message']}"
)
pack = tk.Label(message_frame, text=decoded_message, bg="white")
self.decoded_message = decoded_message # Keep a reference to prevent garbage collection
case "image":
decoded_image = self.decode_image(message["message"])
pack = tk.Label(message_frame, image=decoded_image)
pack.image = decoded_image # Keep a reference to prevent garbage collection
pack.pack()
if is_sent_by_current_user:
alignment = 'right'
alignment = "right"
else:
alignment = 'left'
alignment = "left"
message_frame.pack(side=alignment, padx=5, pady=5)
def decode_emoji(self, message):
emoji_mapping = {
':)': '😊',
':(': '☹️',
':D': '😃',
':P': '😛',
';)': '😉',
'XD': '😆',
'<3': '❤️',
'O:)': '😇',
':/': '😕',
':*': '😘',
'8)': '😎',
":)": "😊",
":(": "☹️",
":D": "😃",
":P": "😛",
";)": "😉",
"XD": "😆",
"<3": "❤️",
"O:)": "😇",
":/": "😕",
":*": "😘",
"8)": "😎",
}
for emoji_string, unicode_character in emoji_mapping.items():
@@ -68,8 +63,19 @@ class MessageView(tk.Frame):
return message
def decode_image(self, encoded_image):
# Assume encoded_image is a base64-encoded image
decoded_image = base64.b64decode(encoded_image)
image = Image.open(io.BytesIO(decoded_image))
image = ImageTk.PhotoImage(image)
return image
try:
decoded_image = base64.b64decode(encoded_image)
image_io = io.BytesIO(decoded_image)
original_image = Image.open(image_io)
resized_image = original_image.resize((100, 100), Image.ADAPTIVE)
self.image = resized_image
image = ImageTk.PhotoImage(self.image)
return image
except UnidentifiedImageError as e:
print(f"Error decoding image: {e}")
return None
except Exception as e:
print(f"Unexpected error: {e}")
return None