109 lines
2.2 KiB
Python
Executable file
109 lines
2.2 KiB
Python
Executable file
#!/usr/bin/env python3
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import sys
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import socket
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import struct
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import hashlib
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import os
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import time
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from getpass import getpass
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# update types
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FLASH = 0
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SPIFFS = 1
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def readMessage(sock):
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data = sock.recv(4)
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length, = struct.unpack(">I", data)
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data = sock.recv(1)
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success, = struct.unpack("B", data)
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data = sock.recv(length-1)
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message = data.decode('utf-8')
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return success, message
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# read the salt from the config file
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with open("../data/etc/auth", "r") as authFile:
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lineno = 0
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for line in authFile:
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if lineno == 1:
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SALT = line.strip()
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break
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lineno += 1
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_, host, port, updatetypestr, filename = sys.argv
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if updatetypestr == "flash":
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updatetype = FLASH
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elif updatetypestr == "spiffs":
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updatetype = SPIFFS
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else:
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print(f"Invalid update type {updatetypestr}. Valid types are: flash, spiffs")
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exit(1)
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# read and store the password from the user
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pwd = getpass()
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s = socket.create_connection( (host, int(port)) )
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data = s.recv(4)
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length, = struct.unpack(">I", data)
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if length != 4:
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print(f"Unexpected challenge length: {length}")
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exit(1)
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data = s.recv(4)
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challenge, = struct.unpack(">I", data)
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print(f"Challenge: {challenge}")
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# build response string
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responsestr = pwd + ":" + str(challenge) + ":" + SALT
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m = hashlib.sha256()
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m.update(responsestr.encode('utf-8'))
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response = m.hexdigest()
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print(f"Response: {response}")
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data = struct.pack(">I64s", len(response), response.encode('ascii') )
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s.send(data)
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success, message = readMessage(s)
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print(f"Server message: {message}")
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if not success:
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print("Failed.")
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exit(1)
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print() # for proper progress display
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with open(filename, "rb") as binfile:
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filesize = os.stat(filename).st_size
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messagesize = filesize + 1 # for type byte
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data = struct.pack(">I", messagesize)
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s.send(data)
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data = struct.pack("B", updatetype)
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s.send(data)
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sent_bytes = 0
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while True:
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data = binfile.read(1024)
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if not data:
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break
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s.send(data)
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sent_bytes += len(data)
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print(f"\rSent {sent_bytes} of {filesize} bytes.")
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success, message = readMessage(s)
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print(f"Server message: {message}")
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if not success:
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print("Failed.")
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exit(1)
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