Textview tomfoolery

hexnoise.py

@@ -225,7 +225,7 @@ class NoiseEngine:
                 raise ValueError(f'Incorrect packet type {pkt_type}. Ignoring since this is only test code.')
         if self.debug:
             print('Handshake finished, handshake hash:')
-            hexdump(print, self.proto.get_handshake_hash(), args.width)
+            hexdump(print, self.proto.get_handshake_hash())
 
     def channel_binding_incantation(self):
         hhash = self.proto.get_handshake_hash()
@@ -245,7 +245,7 @@ class NoiseEngine:
             rtype, data = self._decrypt(received)
             if self.debug:
                 print(f'Decrypted packet {rtype} ({rtype.value}):')
-                hexdump(print, data, args.width)
+                hexdump(print, data)
             yield rtype, data
 
     def _decrypt(self, received):
@@ -271,7 +271,7 @@ class NoiseEngine:
         def setter(n):
             self.proto.noise_protocol.cipher_state_decrypt.n = nold + n
 
-        with suppress(NoiseInvalMessage):
+        with suppress(NoiseInvalidMessage):
             yield setter
 
         proto.noise_protocol.cipher_state_decrypt.n = nold

pairing.py

@@ -1,26 +1,97 @@
 #!/usr/bin/env python3
+import threading
+import re
+
+import serial
 import gi
 gi.require_version('Gtk', '3.0')
-from gi.repository import Gtk
+gi.require_version('Pango', '1.0')
+from gi.repository import Gtk, Pango
+
+import hexnoise
 
 class PairingWindow(Gtk.Window):
-    def __init__(self):
+    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(400, 100)
+        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\nSearching for device')
-        self.vbox.add(self.label)
+        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__':
-    window = PairingWindow()
+    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()