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pyReceiveFile.py
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pyReceiveFile.py
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#!/usr/bin/python3
# -*- coding: utf-8 -*-
import socket
from pyCryptoFile import decrypt_private_key, get_private_key
import argparse
__version__ = "1.0.0"
#it corresponds to 128 data encrypted using public key and encoded in base64.
# If you change the length of data sent please calculate the new received length
# be careful that you can't send too much data the max data for 2048 key length is 190.
RCVBYTES = 344
def pyReceiveFileVersion():
return f"pyReceiveFile version : {__version__}"
def receive_file(filename: str = "Received_File", host: str = "localhost", port: int = 12312, keyfile: str = "") -> None:
sock = socket.socket() # Create a socket object
if host == "localhost":
host = socket.gethostname() # Get local machine name
#port = 12312
message = "Hello server " + host
sock.settimeout(20)
bMessage = bytes(message, "UTF-8")
sock.connect((host, port))
sock.send(bMessage)
privkey = get_private_key(keyfile)
with open(filename, "wb") as out_file:
print("File opened")
print("Receiving data...")
while True:
data_temp = sock.recv(344)
#print(data_temp)
if data_temp != b'':
data = decrypt_private_key(data_temp, privkey)
print(f"{data = }")
else:
data = data_temp
if not data:
break
out_file.write(data) # Write data to a file
print("Successfully got the file")
sock.shutdown(1)
sock.close()
print("Connection closed")
if __name__ == "__main__":
parser = argparse.ArgumentParser(description="pyReceiveFile is a python3 program that connects to a socket and receives data encrypted using ssh key encryption")
parser.add_argument('-V', '--version', help='Display the version of pyReceiveFile', action='version', version=pyReceiveFileVersion())
parser.add_argument('-f', '--file', help='file to receive data', default='Received_file', required=False)
parser.add_argument('-hn', '--hostname', help='hostname', default='localhost', required=False)
parser.add_argument('-p', '--port', help='port number', type=int, default=12312, required=False)
parser.add_argument('-k', '--keyfile', help='private key file', default="", required=False)
args = parser.parse_args()
receive_file(filename=args.file, host=args.hostname, port=args.port, keyfile=args.keyfile)