775 lines
30 KiB
Python
775 lines
30 KiB
Python
# Copyright (C) 2020 by eichhornchen, ÿnérant
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# SPDX-License-Identifier: GPL-3.0-or-later
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import curses
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import re
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import socket
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from argparse import ArgumentParser
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from enum import Enum
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from ipaddress import IPv6Address
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from threading import Thread
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from typing import Any, List, Optional, Tuple
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import emoji
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from emoji import unicode_codes
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from squinnondation.term_manager import TermManager
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class Squinnondation:
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args: Any
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bind_address: str
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bind_port: int
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no_emoji: bool
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no_markdown: bool
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screen: Any
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def parse_arguments(self) -> None:
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parser = ArgumentParser(description="MIRC client.")
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parser.add_argument('bind_address', type=str, default="localhost",
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help="Address of the client.")
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parser.add_argument('bind_port', type=int, default=2500,
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help="Port of the client. Must be between 1024 and 65535.")
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parser.add_argument('--client_address', type=str, default=None,
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help="Address of the first neighbour.")
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parser.add_argument('--client_port', type=int, default=0,
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help="Port of the first neighbour. Must be between 1024 and 65535.")
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parser.add_argument('--no-emoji', '-ne', action='store_true',
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help="Don't replace emojis.")
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parser.add_argument('--no-markdown', '-nm', action='store_true',
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help="Don't replace emojis.")
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self.args = parser.parse_args()
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if not (1024 <= self.args.bind_port <= 65535) or\
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not (not self.args.client_port or 1024 <= self.args.client_port <= 65535):
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raise ValueError("Ports must be between 1024 and 65535.")
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self.bind_address = self.args.bind_address
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self.bind_port = self.args.bind_port
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self.no_emoji = self.args.no_emoji
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self.no_markdown = self.args.no_markdown
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@staticmethod
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def main() -> None: # pragma: no cover
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instance = Squinnondation()
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instance.parse_arguments()
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with TermManager() as term_manager:
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screen = term_manager.screen
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instance.screen = screen
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screen.addstr(0, 0, "Enter your nickname: ")
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curses.echo()
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nickname = screen.getstr().decode("UTF-8")
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curses.noecho()
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squirrel = Squirrel(instance, nickname)
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squirrel.refresh_history()
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squirrel.refresh_input()
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if not instance.no_emoji:
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squirrel.refresh_emoji_pad()
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if instance.args.client_address and instance.args.client_port:
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hazelnut = Hazelnut(address=instance.args.client_address, port=instance.args.client_port)
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squirrel.hazelnuts[(instance.args.client_address, instance.args.client_port)] = hazelnut
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Worm(squirrel).start()
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while True:
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squirrel.refresh_history()
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squirrel.refresh_input()
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if not instance.no_emoji:
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squirrel.refresh_emoji_pad()
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key = screen.getkey(curses.LINES - 1, 3 + len(squirrel.nickname) + squirrel.input_index)
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if key == "\x7f": # backspace
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if squirrel.input_index:
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squirrel.input_index -= 1
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squirrel.input_buffer = squirrel.input_buffer[:squirrel.input_index] \
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+ squirrel.input_buffer[squirrel.input_index + 1:]
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continue
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elif key == "KEY_LEFT":
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squirrel.input_index = max(0, squirrel.input_index - 1)
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continue
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elif key == "KEY_RIGHT":
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squirrel.input_index = min(len(squirrel.input_buffer), squirrel.input_index + 1)
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continue
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elif key == "KEY_UP":
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squirrel.last_line = min(max(curses.LINES - 3, squirrel.last_line - 1), len(squirrel.history) - 1)
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continue
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elif key == "KEY_DOWN":
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squirrel.last_line = min(len(squirrel.history) - 1, squirrel.last_line + 1)
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continue
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elif key == "KEY_PPAGE":
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squirrel.last_line = min(max(curses.LINES - 3, squirrel.last_line - (curses.LINES - 3)),
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len(squirrel.history) - 1)
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continue
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elif key == "KEY_NPAGE":
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squirrel.last_line = min(len(squirrel.history) - 1, squirrel.last_line + (curses.LINES - 3))
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continue
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elif key == "KEY_HOME":
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squirrel.input_index = 0
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continue
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elif key == "KEY_END":
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squirrel.input_index = len(squirrel.input_buffer)
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continue
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elif key == "KEY_RESIZE":
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continue
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elif key == "KEY_MOUSE":
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try:
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_, x, y, _, attr = curses.getmouse()
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except curses.error:
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# This is not a valid click
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continue
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if not instance.no_emoji:
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if y == curses.LINES - 1 and x >= curses.COLS - 3:
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# Click on the emoji
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squirrel.emoji_panel_page *= -1
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elif squirrel.emoji_panel_page > 0 and y == curses.LINES - 4 and x >= curses.COLS - 5:
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squirrel.emoji_panel_page += 1
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elif squirrel.emoji_panel_page > 1 and y == curses.LINES - curses.LINES // 2 - 1 \
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and x >= curses.COLS - 5:
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squirrel.emoji_panel_page -= 1
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elif squirrel.emoji_panel_page > 0 and y >= curses.LINES // 2 - 1 and x >= curses.COLS // 2 - 1:
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pad_y, pad_x = y - (curses.LINES - curses.LINES // 2) + 1,\
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(x - (curses.COLS - curses.COLS // 3)) // 2
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height, width = squirrel.emoji_pad.getmaxyx()
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height -= 1
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width -= 1
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emojis = list(unicode_codes.UNICODE_EMOJI)
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emojis = [c for c in emojis if len(c) == 1]
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size = (height - 2) * (width - 4) // 2
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page = emojis[(squirrel.emoji_panel_page - 1) * size:squirrel.emoji_panel_page * size]
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index = pad_y * (width - 4) // 2 + pad_x
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char = page[index]
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if char:
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demojized = emoji.demojize(char)
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if char != demojized:
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for c in reversed(demojized):
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curses.ungetch(c)
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continue
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elif len(key) > 1:
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squirrel.add_system_message(f"unmanaged key press: {key}")
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continue
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elif key != "\n":
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squirrel.input_buffer = squirrel.input_buffer[:squirrel.input_index] + key \
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+ squirrel.input_buffer[squirrel.input_index:]
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squirrel.input_index += 1
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continue
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msg = squirrel.input_buffer
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squirrel.input_buffer = ""
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squirrel.input_index = 0
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if not msg:
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continue
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msg = f"<{squirrel.nickname}> {msg}"
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squirrel.add_message(msg)
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for hazelnut in list(squirrel.hazelnuts.values()):
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pkt = Packet()
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pkt.magic = 95
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pkt.version = 0
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tlv = DataTLV()
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tlv.data = msg.encode("UTF-8")
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tlv.sender_id = 42
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tlv.nonce = 18
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tlv.length = len(tlv.data) + 1 + 1 + 8 + 4
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pkt.body = [tlv]
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pkt.body_length = tlv.length + 2
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squirrel.send_packet(hazelnut, pkt)
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class TLV:
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"""
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The Tag-Length-Value contains the different type of data that can be sent.
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TODO: add subclasses for each type of TLV
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"""
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type: int
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def unmarshal(self, raw_data: bytes) -> None:
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"""
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Parse data and construct TLV.
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"""
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raise NotImplementedError
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def marshal(self) -> bytes:
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"""
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Translate the TLV into a byte array.
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"""
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raise NotImplementedError
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def validate_data(self) -> bool:
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"""
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Ensure that the TLV is well-formed.
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Raises a ValueError if it is not the case.
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TODO: Make some tests
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"""
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return True
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def handle(self, squirrel: "Squirrel", sender: "Hazelnut") -> None:
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"""
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Indicates what to do when this TLV is received from a given hazel.
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It is ensured that the data is valid.
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"""
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@staticmethod
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def tlv_classes():
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return [Pad1TLV, PadNTLV, HelloTLV, NeighbourTLV, DataTLV, AckTLV, GoAwayTLV, WarningTLV]
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class Pad1TLV(TLV):
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"""
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This TLV is simply ignored.
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"""
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type: int = 0
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def unmarshal(self, raw_data: bytes) -> None:
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"""
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There is nothing to do. We ignore the packet.
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"""
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self.type = raw_data[0]
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def marshal(self) -> bytes:
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"""
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The TLV is empty.
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"""
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return self.type.to_bytes(1, "big")
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def handle(self, squirrel: "Squirrel", sender: "Hazelnut") -> None:
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# TODO Add some easter eggs
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squirrel.add_system_message(f"For each byte in the packet that I received, you will die today. "
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"And eat cookies.")
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class PadNTLV(TLV):
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"""
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This TLV is filled with zeros. It is ignored.
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"""
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type: int = 1
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length: int
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mbz: bytes
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def validate_data(self) -> bool:
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if self.mbz != int(0).to_bytes(self.length, "big"):
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raise ValueError("The body of a PadN TLV is not filled with zeros.")
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return True
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def unmarshal(self, raw_data: bytes) -> None:
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"""
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Store the zero-array, then ignore the packet.
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"""
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self.type = raw_data[0]
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self.length = raw_data[1]
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self.mbz = raw_data[2:2 + self.length]
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def marshal(self) -> bytes:
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"""
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Construct the byte array filled by zeros.
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"""
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return self.type.to_bytes(1, "big") + self.length.to_bytes(1, "big") + self.mbz[:self.length]
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def handle(self, squirrel: "Squirrel", sender: "Hazelnut") -> None:
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# TODO Add some easter eggs
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squirrel.add_system_message(f"I received {self.length} zeros, am I so a bag guy ? :cold_sweat:")
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class HelloTLV(TLV):
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type: int = 2
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length: int
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source_id: int
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dest_id: Optional[int]
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def validate_data(self) -> bool:
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if self.length != 8 and self.length != 16:
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raise ValueError("The length of a Hello TLV must be 8 for a short Hello, or 16 for a long Hello,"
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f"found {self.length}")
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return True
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def unmarshal(self, raw_data: bytes) -> None:
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self.type = raw_data[0]
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self.length = raw_data[1]
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self.source_id = int.from_bytes(raw_data[2:10], "big")
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if self.is_long:
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self.dest_id = int.from_bytes(raw_data[10:18], "big")
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def marshal(self) -> bytes:
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data = self.type.to_bytes(1, "big") + self.length.to_bytes(1, "big") + self.source_id.to_bytes(8, "big")
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if self.dest_id:
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data += self.dest_id.to_bytes(8, "big")
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return data
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def handle(self, squirrel: "Squirrel", sender: "Hazelnut") -> None:
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# TODO Implement HelloTLV
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squirrel.add_system_message("Aaaawwww, someone spoke to me and said me Hello smiling_face_with_"
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+ (":3_hearts:" if self.is_long else "smiling_eyes:"))
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@property
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def is_long(self):
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return self.length == 16
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class NeighbourTLV(TLV):
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type: int = 3
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length: int
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ip_address: IPv6Address
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port: int
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def unmarshal(self, raw_data: bytes) -> None:
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self.type = raw_data[0]
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self.length = raw_data[1]
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self.ip_address = IPv6Address(raw_data[2:18])
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self.port = int.from_bytes(raw_data[18:20], "big")
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def marshal(self) -> bytes:
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return self.type.to_bytes(1, "big") + \
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self.length.to_bytes(1, "big") + \
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self.ip_address.packed + \
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self.port.to_bytes(2, "big")
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def handle(self, squirrel: "Squirrel", sender: "Hazelnut") -> None:
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# TODO Implement NeighbourTLV
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squirrel.add_system_message("I have a friend!")
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squirrel.add_system_message(f"Welcome {self.ip_address}:{self.port}!")
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class DataTLV(TLV):
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type: int = 4
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length: int
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sender_id: int
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nonce: int
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data: bytes
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def unmarshal(self, raw_data: bytes) -> None:
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self.type = raw_data[0]
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self.length = raw_data[1]
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self.sender_id = int.from_bytes(raw_data[2:10], "big")
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self.nonce = int.from_bytes(raw_data[10:14], "big")
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self.data = raw_data[14:2 + self.length]
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def marshal(self) -> bytes:
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return self.type.to_bytes(1, "big") + \
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self.length.to_bytes(1, "big") + \
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self.sender_id.to_bytes(8, "big") + \
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self.nonce.to_bytes(4, "big") + \
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self.data
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def handle(self, squirrel: "Squirrel", sender: "Hazelnut") -> None:
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"""
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A message has been sent. We log it.
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TODO: Check that the tuple (sender_id, nonce) is unique to avoid duplicates.
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"""
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squirrel.add_message(self.data.decode('UTF-8'))
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class AckTLV(TLV):
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type: int = 5
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length: int
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sender_id: int
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nonce: int
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def unmarshal(self, raw_data: bytes) -> None:
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self.type = raw_data[0]
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self.length = raw_data[1]
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self.sender_id = int.from_bytes(raw_data[2:10], "big")
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self.nonce = int.from_bytes(raw_data[10:14], "big")
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def marshal(self) -> bytes:
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return self.type.to_bytes(1, "big") + \
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self.length.to_bytes(1, "big") + \
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self.sender_id.to_bytes(8, "big") + \
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self.nonce.to_bytes(4, "big")
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def handle(self, squirrel: "Squirrel", sender: "Hazelnut") -> None:
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# TODO Implement AckTLV
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squirrel.add_system_message("I received an AckTLV. I don't know what to do with it. Please implement me!")
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class GoAwayTLV(TLV):
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class GoAwayType(Enum):
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UNKNOWN = 0
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EXIT = 1
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TIMEOUT = 2
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PROTOCOL_VIOLATION = 3
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type: int = 6
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length: int
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code: GoAwayType
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message: str
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def unmarshal(self, raw_data: bytes) -> None:
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self.type = raw_data[0]
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self.length = raw_data[1]
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self.code = GoAwayTLV.GoAwayType(raw_data[2])
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self.message = raw_data[3:self.length - 1].decode("UTF-8")
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def marshal(self) -> bytes:
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return self.type.to_bytes(1, "big") + \
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self.length.to_bytes(1, "big") + \
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self.code.value.to_bytes(1, "big") + \
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self.message.encode("UTF-8")[:self.length - 1]
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def handle(self, squirrel: "Squirrel", sender: "Hazelnut") -> None:
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# TODO Implement GoAwayTLV
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squirrel.add_system_message("Some told me that he went away. That's not very nice :( "
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"I should send him some cake.")
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class WarningTLV(TLV):
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type: int = 7
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length: int
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message: str
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def unmarshal(self, raw_data: bytes) -> None:
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self.type = raw_data[0]
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self.length = raw_data[1]
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self.message = raw_data[2:self.length].decode("UTF-8")
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def marshal(self) -> bytes:
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return self.type.to_bytes(1, "big") + \
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self.length.to_bytes(1, "big") + \
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self.message.encode("UTF-8")[:self.length]
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def handle(self, squirrel: "Squirrel", sender: "Hazelnut") -> None:
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squirrel.add_message(f"<warning> *A client warned you: {self.message}*")
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class Packet:
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"""
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A Packet is a wrapper around the
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"""
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magic: int
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version: int
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body_length: int
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body: List[TLV]
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def validate_data(self) -> bool:
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"""
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Ensure that the packet is well-formed.
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Raises a ValueError if the packet contains bad data.
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"""
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if self.magic != 95:
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raise ValueError("The magic code of the packet must be 95, found: {:d}".format(self.magic))
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if self.version != 0:
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raise ValueError("The version of the packet is not supported: {:d}".format(self.version))
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if not (0 <= self.body_length <= 120):
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raise ValueError("The body length of the packet is negative or too high. It must be between 0 and 1020,"
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"found: {:d}".format(self.body_length))
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return all(tlv.validate_data() for tlv in self.body)
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@staticmethod
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def unmarshal(data: bytes) -> "Packet":
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"""
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Read raw data and build the packet wrapper.
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Raises a ValueError whenever the data is invalid.
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"""
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pkt = Packet()
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pkt.magic = data[0]
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pkt.version = data[1]
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pkt.body_length = int.from_bytes(data[2:4], byteorder="big")
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pkt.body = []
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read_bytes = 0
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while read_bytes <= min(len(data) - 4, pkt.body_length):
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tlv_type = data[4]
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if not (0 <= tlv_type < len(TLV.tlv_classes())):
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raise ValueError(f"TLV type is not supported: {tlv_type}")
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tlv = TLV.tlv_classes()[tlv_type]()
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tlv.unmarshal(data[4:4 + pkt.body_length])
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pkt.body.append(tlv)
|
|
# Pad1TLV has no length
|
|
read_bytes += 1 if tlv_type == 0 else tlv.length + 2
|
|
|
|
pkt.validate_data()
|
|
|
|
return pkt
|
|
|
|
def marshal(self) -> bytes:
|
|
"""
|
|
Compute the byte array data associated to the packet.
|
|
"""
|
|
data = self.magic.to_bytes(1, "big")
|
|
data += self.version.to_bytes(1, "big")
|
|
data += self.body_length.to_bytes(2, "big")
|
|
data += b"".join(tlv.marshal() for tlv in self.body)
|
|
return data
|
|
|
|
|
|
class Hazelnut:
|
|
"""
|
|
A hazelnut is a connected client, with its socket.
|
|
"""
|
|
def __init__(self, nickname: str = "anonymous", address: str = "localhost", port: int = 2500):
|
|
self.nickname = nickname
|
|
|
|
try:
|
|
# Resolve DNS as an IPv6
|
|
address = socket.getaddrinfo(address, None, socket.AF_INET6)[0][4][0]
|
|
except socket.gaierror:
|
|
# This is not a valid IPv6. Assume it can be resolved as an IPv4, and we use IPv4-mapping
|
|
# to compute a valid IPv6.
|
|
# See https://fr.wikipedia.org/wiki/Adresse_IPv6_mappant_IPv4
|
|
address = "::ffff:" + socket.getaddrinfo(address, None, socket.AF_INET)[0][4][0]
|
|
|
|
self.address = IPv6Address(address)
|
|
self.port = port
|
|
|
|
|
|
class Squirrel(Hazelnut):
|
|
"""
|
|
The squirrel is the user of the program. It can speak with other clients, that are called hazelnuts.
|
|
"""
|
|
def __init__(self, instance: Squinnondation, nickname: str):
|
|
super().__init__(nickname, instance.bind_address, instance.bind_port)
|
|
# Create UDP socket
|
|
self.socket = socket.socket(socket.AF_INET6, socket.SOCK_DGRAM)
|
|
# Bind the socket
|
|
self.socket.bind((str(self.address), self.port))
|
|
|
|
self.squinnondation = instance
|
|
|
|
self.input_buffer = ""
|
|
self.input_index = 0
|
|
self.last_line = -1
|
|
|
|
self.history = []
|
|
self.history_pad = curses.newpad(curses.LINES - 2, curses.COLS)
|
|
self.input_pad = curses.newpad(1, curses.COLS)
|
|
self.emoji_pad = curses.newpad(18, 12)
|
|
self.emoji_panel_page = -1
|
|
|
|
curses.init_color(curses.COLOR_WHITE, 1000, 1000, 1000)
|
|
for i in range(curses.COLOR_BLACK + 1, curses.COLOR_WHITE):
|
|
curses.init_pair(i + 1, i, curses.COLOR_BLACK)
|
|
|
|
self.hazelnuts = dict()
|
|
self.add_system_message(f"Listening on {self.address}:{self.port}")
|
|
|
|
def find_hazelnut(self, address: str, port: int) -> Hazelnut:
|
|
"""
|
|
Translate an address into a hazelnut, and store it in the list of the hazelnuts, ie. the neighbours.
|
|
"""
|
|
if (address, port) in self.hazelnuts:
|
|
return self.hazelnuts[(address, port)]
|
|
hazelnut = Hazelnut(address=address, port=port)
|
|
self.hazelnuts[(address, port)] = hazelnut
|
|
return hazelnut
|
|
|
|
def send_packet(self, client: Hazelnut, pkt: Packet) -> int:
|
|
"""
|
|
Send a formatted packet to a client.
|
|
"""
|
|
return self.send_raw_data(client, pkt.marshal())
|
|
|
|
def send_raw_data(self, client: Hazelnut, data: bytes) -> int:
|
|
"""
|
|
Send a raw packet to a client.
|
|
"""
|
|
return self.socket.sendto(data, (str(client.address), client.port))
|
|
|
|
def receive_packet(self) -> Tuple[Packet, Hazelnut]:
|
|
"""
|
|
Receive a packet from the socket and translate it into a Python object.
|
|
Warning: the process is blocking, it should be ran inside a dedicated thread.
|
|
"""
|
|
data, addr = self.receive_raw_data()
|
|
return Packet.unmarshal(data), self.find_hazelnut(addr[0], addr[1])
|
|
|
|
def receive_raw_data(self) -> Tuple[bytes, Any]:
|
|
"""
|
|
Receive a packet from the socket.
|
|
"""
|
|
return self.socket.recvfrom(1024)
|
|
|
|
def add_message(self, msg: str) -> None:
|
|
"""
|
|
Store a new message into the history.
|
|
"""
|
|
self.history.append(msg)
|
|
if self.last_line == len(self.history) - 2:
|
|
self.last_line += 1
|
|
|
|
def add_system_message(self, msg: str) -> None:
|
|
"""
|
|
Add a new system log message.
|
|
TODO: Configure logging levels to ignore some messages.
|
|
"""
|
|
return self.add_message(f"<system> *{msg}*")
|
|
|
|
def print_markdown(self, pad: Any, y: int, x: int, msg: str,
|
|
bold: bool = False, italic: bool = False, underline: bool = False, strike: bool = False) -> int:
|
|
"""
|
|
Parse a markdown-formatted text and format the text as bold, italic or text text.
|
|
***text***: bold, italic
|
|
**text**: bold
|
|
*text*: italic
|
|
__text__: underline
|
|
_text_: italic
|
|
~~text~~: strikethrough
|
|
"""
|
|
# Replace :emoji_name: by the good emoji
|
|
if not self.squinnondation.no_emoji:
|
|
msg = emoji.emojize(msg, use_aliases=True)
|
|
|
|
if self.squinnondation.no_markdown:
|
|
pad.addstr(y, x, msg)
|
|
return len(msg)
|
|
|
|
underline_match = re.match("(.*)__(.*)__(.*)", msg)
|
|
if underline_match:
|
|
before, text, after = underline_match.group(1), underline_match.group(2), underline_match.group(3)
|
|
len_before = self.print_markdown(pad, y, x, before, bold, italic, underline)
|
|
len_mid = self.print_markdown(pad, y, x + len_before, text, bold, italic, not underline)
|
|
len_after = self.print_markdown(pad, y, x + len_before + len_mid, after, bold, italic, underline)
|
|
return len_before + len_mid + len_after
|
|
|
|
italic_match = re.match("(.*)_(.*)_(.*)", msg)
|
|
if italic_match:
|
|
before, text, after = italic_match.group(1), italic_match.group(2), italic_match.group(3)
|
|
len_before = self.print_markdown(pad, y, x, before, bold, italic, underline)
|
|
len_mid = self.print_markdown(pad, y, x + len_before, text, bold, not italic, underline)
|
|
len_after = self.print_markdown(pad, y, x + len_before + len_mid, after, bold, italic, underline)
|
|
return len_before + len_mid + len_after
|
|
|
|
bold_italic_match = re.match("(.*)\\*\\*\\*(.*)\\*\\*\\*(.*)", msg)
|
|
if bold_italic_match:
|
|
before, text, after = bold_italic_match.group(1), bold_italic_match.group(2),\
|
|
bold_italic_match.group(3)
|
|
len_before = self.print_markdown(pad, y, x, before, bold, italic, underline, strike)
|
|
len_mid = self.print_markdown(pad, y, x + len_before, text, not bold, not italic, underline, strike)
|
|
len_after = self.print_markdown(pad, y, x + len_before + len_mid, after, bold, italic, underline, strike)
|
|
return len_before + len_mid + len_after
|
|
|
|
bold_match = re.match("(.*)\\*\\*(.*)\\*\\*(.*)", msg)
|
|
if bold_match:
|
|
before, text, after = bold_match.group(1), bold_match.group(2), bold_match.group(3)
|
|
len_before = self.print_markdown(pad, y, x, before, bold, italic, underline, strike)
|
|
len_mid = self.print_markdown(pad, y, x + len_before, text, not bold, italic, underline, strike)
|
|
len_after = self.print_markdown(pad, y, x + len_before + len_mid, after, bold, italic, underline, strike)
|
|
return len_before + len_mid + len_after
|
|
|
|
italic_match = re.match("(.*)\\*(.*)\\*(.*)", msg)
|
|
if italic_match:
|
|
before, text, after = italic_match.group(1), italic_match.group(2), italic_match.group(3)
|
|
len_before = self.print_markdown(pad, y, x, before, bold, italic, underline, strike)
|
|
len_mid = self.print_markdown(pad, y, x + len_before, text, bold, not italic, underline, strike)
|
|
len_after = self.print_markdown(pad, y, x + len_before + len_mid, after, bold, italic, underline, strike)
|
|
return len_before + len_mid + len_after
|
|
|
|
strike_match = re.match("(.*)~~(.*)~~(.*)", msg)
|
|
if strike_match:
|
|
before, text, after = strike_match.group(1), strike_match.group(2), strike_match.group(3)
|
|
len_before = self.print_markdown(pad, y, x, before, bold, italic, underline, strike)
|
|
len_mid = self.print_markdown(pad, y, x + len_before, text, bold, italic, underline, not strike)
|
|
len_after = self.print_markdown(pad, y, x + len_before + len_mid, after, bold, italic, underline, strike)
|
|
return len_before + len_mid + len_after
|
|
|
|
size = len(msg)
|
|
|
|
attrs = 0
|
|
attrs |= curses.A_BOLD if bold else 0
|
|
attrs |= curses.A_ITALIC if italic else 0
|
|
attrs |= curses.A_UNDERLINE if underline else 0
|
|
if strike:
|
|
msg = "".join(c + "\u0336" for c in msg)
|
|
pad.addstr(y, x, msg, attrs)
|
|
return size
|
|
|
|
def refresh_history(self) -> None:
|
|
"""
|
|
Rewrite the history of the messages.
|
|
"""
|
|
y, x = self.squinnondation.screen.getmaxyx()
|
|
if curses.is_term_resized(curses.LINES, curses.COLS):
|
|
curses.resizeterm(y, x)
|
|
self.history_pad.resize(curses.LINES - 2, curses.COLS - 1)
|
|
self.input_pad.resize(1, curses.COLS - 1)
|
|
|
|
self.history_pad.erase()
|
|
for i, msg in enumerate(self.history[max(0, self.last_line - curses.LINES + 3):self.last_line + 1]):
|
|
if not re.match("<.*> .*", msg):
|
|
msg = "<unknown> " + msg
|
|
match = re.match("<(.*)> (.*)", msg)
|
|
nickname = match.group(1)
|
|
msg = match.group(2)
|
|
color_id = sum(ord(c) for c in nickname) % 6 + 1
|
|
self.history_pad.addstr(i, 0, "<")
|
|
self.history_pad.addstr(i, 1, nickname, curses.A_BOLD | curses.color_pair(color_id + 1))
|
|
self.history_pad.addstr(i, 1 + len(nickname), "> ")
|
|
self.print_markdown(self.history_pad, i, 3 + len(nickname), msg)
|
|
self.history_pad.refresh(0, 0, 0, 0, curses.LINES - 2, curses.COLS)
|
|
|
|
def refresh_input(self) -> None:
|
|
"""
|
|
Redraw input line. Must not be called while the message is not sent.
|
|
"""
|
|
self.input_pad.erase()
|
|
color_id = sum(ord(c) for c in self.nickname) % 6 + 1
|
|
self.input_pad.addstr(0, 0, "<")
|
|
self.input_pad.addstr(0, 1, self.nickname, curses.A_BOLD | curses.color_pair(color_id + 1))
|
|
self.input_pad.addstr(0, 1 + len(self.nickname), "> ")
|
|
msg = self.input_buffer
|
|
if len(msg) + len(self.nickname) + 3 >= curses.COLS:
|
|
msg = ""
|
|
self.input_pad.addstr(0, 3 + len(self.nickname), self.input_buffer)
|
|
if not self.squinnondation.no_emoji:
|
|
self.input_pad.addstr(0, self.input_pad.getmaxyx()[1] - 3, "😀")
|
|
self.input_pad.refresh(0, 0, curses.LINES - 1, 0, curses.LINES - 1, curses.COLS - 1)
|
|
|
|
def refresh_emoji_pad(self) -> None:
|
|
"""
|
|
Display the emoji pad if necessary.
|
|
"""
|
|
self.emoji_pad.erase()
|
|
|
|
if self.emoji_panel_page > 0:
|
|
height, width = curses.LINES // 2, curses.COLS // 3
|
|
self.emoji_pad.resize(height + 1, width + 1)
|
|
self.emoji_pad.addstr(0, 0, "┏" + (width - 2) * "━" + "┓")
|
|
self.emoji_pad.addstr(0, (width - 14) // 2, " == EMOJIS == ")
|
|
for i in range(1, height):
|
|
self.emoji_pad.addstr(i, 0, "┃" + (width - 2) * " " + "┃")
|
|
self.emoji_pad.addstr(height - 1, 0, "┗" + (width - 2) * "━" + "┛")
|
|
|
|
emojis = list(unicode_codes.UNICODE_EMOJI)
|
|
emojis = [c for c in emojis if len(c) == 1]
|
|
size = (height - 2) * (width - 4) // 2
|
|
page = emojis[(self.emoji_panel_page - 1) * size:self.emoji_panel_page * size]
|
|
|
|
if self.emoji_panel_page != 1:
|
|
self.emoji_pad.addstr(1, width - 2, "⬆")
|
|
if len(page) == size:
|
|
self.emoji_pad.addstr(height - 2, width - 2, "⬇")
|
|
|
|
for i in range(height - 2):
|
|
for j in range((width - 4) // 2 + 1):
|
|
index = i * (width - 4) // 2 + j
|
|
if index < len(page):
|
|
self.emoji_pad.addstr(i + 1, 2 * j + 1, page[index])
|
|
|
|
self.emoji_pad.refresh(0, 0, curses.LINES - height - 2, curses.COLS - width - 2,
|
|
curses.LINES - 2, curses.COLS - 2)
|
|
|
|
|
|
class Worm(Thread):
|
|
"""
|
|
The worm is the hazel listener.
|
|
It always waits for an incoming packet, then it treats it, and continues to wait.
|
|
It is in a dedicated thread.
|
|
"""
|
|
def __init__(self, squirrel: Squirrel, *args, **kwargs):
|
|
super().__init__(*args, **kwargs)
|
|
self.squirrel = squirrel
|
|
|
|
def run(self) -> None:
|
|
while True:
|
|
try:
|
|
pkt, hazelnut = self.squirrel.receive_packet()
|
|
pkt.validate_data()
|
|
except ValueError as error:
|
|
self.squirrel.add_system_message("An error occurred while receiving a packet: {}".format(error))
|
|
else:
|
|
for tlv in pkt.body:
|
|
tlv.handle(self.squirrel, hazelnut)
|
|
self.squirrel.refresh_history()
|
|
self.squirrel.refresh_input()
|