Manage commands
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parent
a92df73a55
commit
89bb6ddc3a
GPG Key ID:
3A75C55819C8CF85
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@ -3,7 +3,7 @@
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from datetime import datetime
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from random import randint, uniform
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from typing import Any, Tuple
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from typing import Any, Tuple, Generator
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# from ipaddress import IPv6Address
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from threading import Thread, RLock
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import curses
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@ -129,7 +129,7 @@ class Squirrel(Hazelnut):
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self.hazel_manager = HazelManager(self)
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self.inondator = Inondator(self)
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self.add_system_message(f"Listening on {self.main_address[0]}:{self.main_address[1]}")
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self.add_system_message(f"Listening on {self.main_address[0]}:{self.main_address[1]}", ignore_debug=True)
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self.add_system_message(f"I am {self.id}")
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def new_hazel(self, address: str, port: int) -> Hazelnut:
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@ -168,6 +168,14 @@ class Squirrel(Hazelnut):
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if hazelnut.id == hazel_id:
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return hazelnut
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def find_hazelnut_by_nickname(self, nickname: str) -> Generator[Hazelnut, Any, None]:
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"""
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Retrieve the hazelnuts that are known by their nicknames.
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"""
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for hazelnut in self.hazelnuts.values():
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if hazelnut.nickname == nickname:
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yield hazelnut
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def send_packet(self, client: Hazelnut, pkt: Packet) -> int:
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"""
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Send a formatted packet to a client.
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@ -322,6 +330,9 @@ class Squirrel(Hazelnut):
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if not msg:
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return
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if msg.startswith("/"):
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return self.handle_command(msg[1:])
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msg = f"{self.nickname}: {msg}"
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self.add_message(msg)
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@ -376,6 +387,187 @@ class Squirrel(Hazelnut):
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for c in reversed(demojized):
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curses.ungetch(c)
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def handle_command(self, command: str) -> None:
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"""
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The user sent a command. We analyse it and process what is needed.
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"""
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def resolve_address(address: str) -> str:
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# Resolve address
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try:
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# Resolve DNS as an IPv6
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return socket.getaddrinfo(address, None, socket.AF_INET6)[0][4][0]
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except socket.gaierror:
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# This is not a valid IPv6. Assume it can be resolved as an IPv4, and we use IPv4-mapping
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# to compute a valid IPv6.
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# See https://fr.wikipedia.org/wiki/Adresse_IPv6_mappant_IPv4
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try:
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return "::ffff:" + socket.getaddrinfo(address, None, socket.AF_INET)[0][4][0]
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except socket.gaierror:
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raise ValueError(f"{address} is not resolvable")
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def resolve_port(port: str) -> int:
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try:
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port = int(port)
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if not 1 <= port <= 65565:
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raise ValueError
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return port
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except ValueError:
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raise ValueError(f"{port} is not a valid port")
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args = command.split(" ")
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command, args = args[0].lower(), args[1:]
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if command == "help" or command == "usage":
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self.add_system_message("**/help**\t\t\t\tDisplay this help menu", italic=False, ignore_debug=True)
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self.add_system_message("**/connect address port**\t\tAdd this address in the potential neighbours",
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italic=False, ignore_debug=True)
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self.add_system_message("**/hello address port**\t\tSend short hello to the given neighbour",
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italic=False, ignore_debug=True)
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self.add_system_message("**/unban address port**\t\tReset the error counter of a given neighbour",
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italic=False, ignore_debug=True)
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self.add_system_message("**/info id|nickname|addr port**\tDisplay information about a neighbour",
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italic=False, ignore_debug=True)
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self.add_system_message("**/active**\t\t\tDisplay the list of all active neighbours.",
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italic=False, ignore_debug=True)
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self.add_system_message("**/potential**\t\t\tDisplay the list of all potential neighbours.",
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italic=False, ignore_debug=True)
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self.add_system_message("**/debug**\t\t\t\tToggle debug mode", italic=False, ignore_debug=True)
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self.add_system_message("**/emojis**\t\t\tToggle emojis support", italic=False, ignore_debug=True)
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self.add_system_message("**/markdown**\t\t\tToggle markdown support", italic=False, ignore_debug=True)
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elif command == "connect":
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if len(args) != 2:
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self.add_system_message("Usage: /connect address port", italic=False, ignore_debug=True)
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return
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try:
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address, port = resolve_address(args[0]), resolve_port(args[1])
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except ValueError as e:
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self.add_system_message(str(e), ignore_debug=True)
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return
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if (address, port) in self.hazelnuts:
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self.add_system_message("There is already a known client with this address.", ignore_debug=True)
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return
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hazelnut = self.new_hazel(address, port)
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self.hazelnuts[(address, port)] = hazelnut
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self.add_system_message(f"Potential client successfully added! You can send a hello by running "
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f"\"/hello {address} {port}\".", ignore_debug=True)
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elif command == "hello":
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if len(args) != 2:
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self.add_system_message("Usage: /hello address port", italic=False, ignore_debug=True)
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return
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try:
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address, port = resolve_address(args[0]), resolve_port(args[1])
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except ValueError as e:
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self.add_system_message(str(e), ignore_debug=True)
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return
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if (address, port) not in self.hazelnuts:
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self.add_system_message("This client is unknown. Please register it by running "
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f"\"/connect {address} {port}\"", ignore_debug=True)
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return
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hazelnut = self.find_hazelnut(address, port)
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self.send_packet(hazelnut, Packet.construct(HelloTLV.construct(8, self)))
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self.add_system_message("Hello successfully sent!", ignore_debug=True)
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elif command == "unban":
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if len(args) != 2:
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self.add_system_message("Usage: /unban address port", italic=False, ignore_debug=True)
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return
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try:
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address, port = resolve_address(args[0]), resolve_port(args[1])
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except ValueError as e:
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self.add_system_message(str(e), ignore_debug=True)
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return
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if (address, port) not in self.hazelnuts:
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self.add_system_message("This client is unknown. Please register it by running "
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f"\"/connect {address} {port}\"", ignore_debug=True)
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return
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hazelnut = self.find_hazelnut(address, port)
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hazelnut.errors = 0
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self.add_system_message("The client is unbanned.", ignore_debug=True)
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elif command == "info":
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if len(args) > 2:
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self.add_system_message("Usage: /info me|id|nickname|addr port", italic=False, ignore_debug=True)
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return
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if not args:
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hazelnuts = [self]
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elif len(args) == 2:
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try:
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address, port = resolve_address(args[0]), resolve_port(args[1])
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except ValueError as e:
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self.add_system_message(str(e), ignore_debug=True)
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return
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if (address, port) not in self.hazelnuts:
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self.add_system_message("This client is unknown. Please register it by running "
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f"\"/connect {address} {port}\"", ignore_debug=True)
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return
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hazelnuts = [self.find_hazelnut(address, port)]
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else:
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hazelnuts = list(self.find_hazelnut_by_nickname(args[0]))
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if args[0].isnumeric():
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identifier = int(args[0])
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hazelnuts.append(self.find_hazelnut_by_id(identifier))
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if not hazelnuts:
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self.add_system_message("Unknown client.")
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return
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for hazel in hazelnuts:
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self.add_system_message(f"**Identifier:** {hazel.id or '<*unknown*>'}",
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italic=False, ignore_debug=True)
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self.add_system_message(f"**Nickname:** {hazel.nickname or '<*unknown*>'}",
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italic=False, ignore_debug=True)
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self.add_system_message(f"**Addresses:** "
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+ ", ".join(f"{address}:{port}" for address, port in hazel.addresses),
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italic=False, ignore_debug=True)
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elif command == "active":
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if not self.active_hazelnuts:
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self.add_system_message("No active neighbour.", italic=False, ignore_debug=True)
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return
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for hazel in self.active_hazelnuts:
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self.add_system_message(f"**Identifier:** {hazel.id or '<*unknown*>'}",
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italic=False, ignore_debug=True)
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self.add_system_message(f"**Nickname:** {hazel.nickname or '<*unknown*>'}",
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italic=False, ignore_debug=True)
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self.add_system_message(f"**Addresses:** "
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+ ", ".join(f"{address}:{port}" for address, port in hazel.addresses),
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italic=False, ignore_debug=True)
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elif command == "potential":
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if not self.potential_hazelnuts:
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self.add_system_message("No potential neighbour.", italic=False, ignore_debug=True)
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return
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for hazel in self.potential_hazelnuts:
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self.add_system_message(f"**Identifier:** {hazel.id or '<*unknown*>'}",
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italic=False, ignore_debug=True)
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self.add_system_message(f"**Nickname:** {hazel.nickname or '<*unknown*>'}",
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italic=False, ignore_debug=True)
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self.add_system_message(f"**Addresses:** "
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+ ", ".join(f"{address}:{port}" for address, port in hazel.addresses),
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italic=False, ignore_debug=True)
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elif command == "debug":
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self.squinnondation.debug ^= True
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self.add_system_message(
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"Debug mode " + ("enabled" if self.squinnondation.debug else "disabled") + ".", ignore_debug=True)
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elif command == "emojis":
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self.squinnondation.no_emoji ^= True
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self.add_system_message(
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"Emojis support " + ("disabled" if self.squinnondation.no_emoji else "enabled") + ".",
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ignore_debug=True)
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elif command == "markdown":
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self.squinnondation.debug ^= True
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self.add_system_message(
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"Markdown support " + ("disabled" if self.squinnondation.no_markdown else "enabled") + ".",
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ignore_debug=True)
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else:
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self.add_system_message("Unknown command. Please do /help to see available commands.", ignore_debug=True)
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def add_message(self, msg: str) -> None:
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"""
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Store a new message into the history.
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@ -464,12 +656,13 @@ class Squirrel(Hazelnut):
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self.send_packet(hazelnut, pkt)
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self.recent_messages[key][2].pop(key2)
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def add_system_message(self, msg: str) -> None:
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def add_system_message(self, msg: str, italic: bool = True, ignore_debug: bool = False) -> None:
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"""
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Add a new system log message.
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"""
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if self.squinnondation.debug:
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return self.add_message(f"system: *{msg}*" if not self.squinnondation.no_markdown else f"system: {msg}")
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if self.squinnondation.debug or ignore_debug:
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return self.add_message(
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f"system: *{msg}*" if not self.squinnondation.no_markdown and italic else f"system: {msg}")
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def print_markdown(self, pad: Any, y: int, x: int, msg: str,
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bold: bool = False, italic: bool = False, underline: bool = False, strike: bool = False) -> int:
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