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#!/usr/bin/env python3
import threading
import re
import serial
import gi
gi.require_version('Gtk', '3.0')
gi.require_version('Pango', '1.0')
from gi.repository import Gtk, Pango
import hexnoise
class PairingWindow(Gtk.Window):
def __init__(self, serial, debug=False):
Gtk.Window.__init__(self, title='SecureHID pairing')
self.serial = serial
self.debug = debug
self.set_border_width(10)
self.set_default_size(600, 200)
self.vbox = Gtk.Box(orientation=Gtk.Orientation.VERTICAL, spacing=10)
self.label = Gtk.Label()
self.label.set_line_wrap(True)
self.label.set_justify(Gtk.Justification.CENTER)
self.label.set_markup('<b>Step 1</b>\n\nContacting device...')
self.vbox.pack_start(self.label, True, True, 0)
self.textview = Gtk.TextView()
self.textview.set_editable(False)
self.textbuffer = self.textview.get_buffer()
self.tag_nomatch = self.textbuffer.create_tag("nomatch", weight=Pango.Weight.BOLD)
self.tag_match = self.textbuffer.create_tag("match", background='#AAFFAA', weight=Pango.Weight.BOLD)
self.vbox.pack_start(self.textview, True, True, 0)
self.add(self.vbox)
self.handshaker = threading.Thread(target=self.run_handshake, daemon=True)
self.handshaker.start()
@classmethod
def matchlen(self, ref, text):
words = ref.split()
parts = text.split()
clean = lambda b: re.sub('^[^a-zA-Z0-9-]*', '', re.sub('[^a-zA-Z0-9-]*$', '', b)).lower()
good = ''
for a, b in zip(words[:-1], parts[:-1]):
if a == clean(b):
good = f'{good}b '
rest = clean(parts[-1])
if words[-1].startswith(rest):
good = f'{good} {rest}'
return len(good)
def run_handshake(self):
self.packetizer = hexnoise.Packetizer(self.serial, debug=self.debug)
self.noise = hexnoise.NoiseEngine(self.packetizer, debug=self.debug)
self.noise.perform_handshake()
binding_incantation = self.noise.channel_binding_incantation()
self.label.set_markup(f'<b>Step 2</b>\n\nPerform channel binding ritual.\n'
f'Enter the following incantation, then press enter.\n'
f'<b>{binding_incantation}</b>')
for user_input in self.noise.pairing_messages():
print('got:', user_input)
self.textbuffer.set_text(user_input)
#i1, i2 = self.textbuffer.get_start_iter(), self.textbuffer.get_end_iter()
#self.textbuffer.apply_tag(self.tag_nomatch, i1, i2)
#i1, i2 = self.textbuffer.get_start_iter(), self.textbuffer.get_start_iter()
#i2.forward_chars(self.matchlen(binding_incantation, user_input))
#self.textbuffer.apply_tag(self.tag_match, i1, i2)
self.label.set_markup(f'<b>Done!</b>')
#noise.uinput_passthrough()
if __name__ == '__main__':
import argparse
parser = argparse.ArgumentParser()
parser.add_argument('serial')
parser.add_argument('baudrate')
parser.add_argument('-d', '--debug', action='store_true')
args = parser.parse_args()
ser = serial.Serial(args.serial, args.baudrate)
window = PairingWindow(ser, debug=args.debug)
window.connect('destroy', Gtk.main_quit)
window.show_all()
Gtk.main()
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