mirror of
https://github.com/Cog-Creators/Red-DiscordBot.git
synced 2025-11-06 11:18:54 -05:00
549 lines
20 KiB
Python
549 lines
20 KiB
Python
#!/usr/bin/env python
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import asyncio
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import functools
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import getpass
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import json
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import logging
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import os
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import pip
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import pkg_resources
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import platform
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import shutil
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import signal
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import sys
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from argparse import Namespace
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from copy import deepcopy
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from pathlib import Path
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from typing import NoReturn
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import discord
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# Set the event loop policies here so any subsequent `new_event_loop()`
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# calls, in particular those as a result of the following imports,
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# return the correct loop object.
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from redbot import _update_event_loop_policy, __version__
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_update_event_loop_policy()
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import redbot.logging
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from redbot.core.bot import Red, ExitCodes
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from redbot.core.cli import interactive_config, confirm, parse_cli_flags
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from redbot.setup import get_data_dir, get_name, save_config
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from redbot.core import data_manager, drivers
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from redbot.core._sharedlibdeprecation import SharedLibImportWarner
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log = logging.getLogger("red.main")
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#
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# Red - Discord Bot v3
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#
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# Made by Twentysix, improved by many
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#
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def _get_instance_names():
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with data_manager.config_file.open(encoding="utf-8") as fs:
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data = json.load(fs)
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return sorted(data.keys())
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def list_instances():
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if not data_manager.config_file.exists():
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print(
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"No instances have been configured! Configure one "
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"using `redbot-setup` before trying to run the bot!"
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)
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sys.exit(1)
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else:
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text = "Configured Instances:\n\n"
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for instance_name in _get_instance_names():
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text += "{}\n".format(instance_name)
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print(text)
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sys.exit(0)
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def debug_info():
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"""Shows debug information useful for debugging."""
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if sys.platform == "linux":
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import distro # pylint: disable=import-error
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IS_WINDOWS = os.name == "nt"
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IS_MAC = sys.platform == "darwin"
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IS_LINUX = sys.platform == "linux"
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pyver = sys.version
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pipver = pip.__version__
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redver = __version__
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dpy_version = discord.__version__
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if IS_WINDOWS:
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os_info = platform.uname()
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osver = "{} {} (version {})".format(os_info.system, os_info.release, os_info.version)
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elif IS_MAC:
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os_info = platform.mac_ver()
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osver = "Mac OSX {} {}".format(os_info[0], os_info[2])
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else:
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os_info = distro.linux_distribution()
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osver = "{} {}".format(os_info[0], os_info[1]).strip()
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user_who_ran = getpass.getuser()
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info = (
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"Debug Info for Red\n\n"
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+ "Red version: {}\n".format(redver)
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+ "Python version: {}\n".format(pyver)
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+ "Python executable: {}\n".format(sys.executable)
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+ "Discord.py version: {}\n".format(dpy_version)
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+ "Pip version: {}\n".format(pipver)
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+ "OS version: {}\n".format(osver)
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+ "System arch: {}\n".format(platform.machine())
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+ "User: {}\n".format(user_who_ran)
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)
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print(info)
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sys.exit(0)
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async def edit_instance(red, cli_flags):
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no_prompt = cli_flags.no_prompt
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token = cli_flags.token
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owner = cli_flags.owner
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prefix = cli_flags.prefix
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old_name = cli_flags.instance_name
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new_name = cli_flags.edit_instance_name
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data_path = cli_flags.edit_data_path
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copy_data = cli_flags.copy_data
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confirm_overwrite = cli_flags.overwrite_existing_instance
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if data_path is None and copy_data:
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print("--copy-data can't be used without --edit-data-path argument")
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sys.exit(1)
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if new_name is None and confirm_overwrite:
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print("--overwrite-existing-instance can't be used without --edit-instance-name argument")
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sys.exit(1)
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if (
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no_prompt
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and all(to_change is None for to_change in (token, owner, new_name, data_path))
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and not prefix
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):
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print(
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"No arguments to edit were provided."
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" Available arguments (check help for more information):"
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" --edit-instance-name, --edit-data-path, --copy-data, --owner, --token, --prefix"
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)
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sys.exit(1)
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await _edit_token(red, token, no_prompt)
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await _edit_prefix(red, prefix, no_prompt)
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await _edit_owner(red, owner, no_prompt)
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data = deepcopy(data_manager.basic_config)
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name = _edit_instance_name(old_name, new_name, confirm_overwrite, no_prompt)
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_edit_data_path(data, name, data_path, copy_data, no_prompt)
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save_config(name, data)
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if old_name != name:
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save_config(old_name, {}, remove=True)
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async def _edit_token(red, token, no_prompt):
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if token:
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if not len(token) >= 50:
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print(
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"The provided token doesn't look a valid Discord bot token."
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" Instance's token will remain unchanged.\n"
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)
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return
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await red._config.token.set(token)
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elif not no_prompt and confirm("Would you like to change instance's token?", default=False):
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await interactive_config(red, False, True, print_header=False)
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print("Token updated.\n")
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async def _edit_prefix(red, prefix, no_prompt):
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if prefix:
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prefixes = sorted(prefix, reverse=True)
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await red._config.prefix.set(prefixes)
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elif not no_prompt and confirm("Would you like to change instance's prefixes?", default=False):
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print(
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"Enter the prefixes, separated by a space (please note "
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"that prefixes containing a space will need to be added with [p]set prefix)"
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)
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while True:
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prefixes = input("> ").strip().split()
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if not prefixes:
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print("You need to pass at least one prefix!")
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continue
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prefixes = sorted(prefixes, reverse=True)
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await red._config.prefix.set(prefixes)
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print("Prefixes updated.\n")
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break
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async def _edit_owner(red, owner, no_prompt):
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if owner:
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if not (15 <= len(str(owner)) <= 21):
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print(
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"The provided owner id doesn't look like a valid Discord user id."
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" Instance's owner will remain unchanged."
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)
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return
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await red._config.owner.set(owner)
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elif not no_prompt and confirm("Would you like to change instance's owner?", default=False):
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print(
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"Remember:\n"
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"ONLY the person who is hosting Red should be owner."
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" This has SERIOUS security implications."
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" The owner can access any data that is present on the host system.\n"
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)
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if confirm("Are you sure you want to change instance's owner?", default=False):
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print("Please enter a Discord user id for new owner:")
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while True:
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owner_id = input("> ").strip()
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if not (15 <= len(owner_id) <= 21 and owner_id.isdecimal()):
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print("That doesn't look like a valid Discord user id.")
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continue
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owner_id = int(owner_id)
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await red._config.owner.set(owner_id)
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print("Owner updated.")
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break
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else:
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print("Instance's owner will remain unchanged.")
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print()
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def _edit_instance_name(old_name, new_name, confirm_overwrite, no_prompt):
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if new_name:
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name = new_name
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if name in _get_instance_names() and not confirm_overwrite:
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name = old_name
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print(
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"An instance with this name already exists.\n"
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"If you want to remove the existing instance and replace it with this one,"
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" run this command with --overwrite-existing-instance flag."
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)
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elif not no_prompt and confirm("Would you like to change the instance name?", default=False):
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name = get_name()
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if name in _get_instance_names():
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print(
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"WARNING: An instance already exists with this name. "
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"Continuing will overwrite the existing instance config."
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)
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if not confirm(
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"Are you absolutely certain you want to continue with this instance name?",
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default=False,
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):
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print("Instance name will remain unchanged.")
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name = old_name
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else:
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print("Instance name updated.")
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else:
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print("Instance name updated.")
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print()
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else:
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name = old_name
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return name
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def _edit_data_path(data, instance_name, data_path, copy_data, no_prompt):
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# This modifies the passed dict.
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if data_path:
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new_path = Path(data_path)
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try:
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exists = new_path.exists()
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except OSError:
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print(
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"We were unable to check your chosen directory."
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" Provided path may contain an invalid character."
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" Data location will remain unchanged."
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)
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if not exists:
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try:
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new_path.mkdir(parents=True, exist_ok=True)
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except OSError:
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print(
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"We were unable to create your chosen directory."
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" Data location will remain unchanged."
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)
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data["DATA_PATH"] = data_path
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if copy_data and not _copy_data(data):
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print("Can't copy data to non-empty location. Data location will remain unchanged.")
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data["DATA_PATH"] = data_manager.basic_config["DATA_PATH"]
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elif not no_prompt and confirm("Would you like to change the data location?", default=False):
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data["DATA_PATH"] = get_data_dir(instance_name)
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if confirm("Do you want to copy the data from old location?", default=True):
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if not _copy_data(data):
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print("Can't copy the data to non-empty location.")
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if not confirm("Do you still want to use the new data location?"):
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data["DATA_PATH"] = data_manager.basic_config["DATA_PATH"]
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print("Data location will remain unchanged.")
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return
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print("Old data has been copied over to the new location.")
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print("Data location updated.")
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def _copy_data(data):
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if Path(data["DATA_PATH"]).exists():
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if any(os.scandir(data["DATA_PATH"])):
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return False
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else:
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# this is needed because copytree doesn't work when destination folder exists
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# Python 3.8 has `dirs_exist_ok` option for that
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os.rmdir(data["DATA_PATH"])
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shutil.copytree(data_manager.basic_config["DATA_PATH"], data["DATA_PATH"])
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return True
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def handle_edit(cli_flags: Namespace):
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"""
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This one exists to not log all the things like it's a full run of the bot.
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"""
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loop = asyncio.new_event_loop()
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asyncio.set_event_loop(loop)
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data_manager.load_basic_configuration(cli_flags.instance_name)
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red = Red(cli_flags=cli_flags, description="Red V3", dm_help=None, fetch_offline_members=True)
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try:
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driver_cls = drivers.get_driver_class()
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loop.run_until_complete(driver_cls.initialize(**data_manager.storage_details()))
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loop.run_until_complete(edit_instance(red, cli_flags))
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loop.run_until_complete(driver_cls.teardown())
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except (KeyboardInterrupt, EOFError):
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print("Aborted!")
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finally:
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loop.run_until_complete(asyncio.sleep(1))
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asyncio.set_event_loop(None)
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loop.stop()
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loop.close()
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sys.exit(0)
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async def run_bot(red: Red, cli_flags: Namespace) -> None:
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"""
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This runs the bot.
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Any shutdown which is a result of not being able to log in needs to raise
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a SystemExit exception.
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If the bot starts normally, the bot should be left to handle the exit case.
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It will raise SystemExit in a task, which will reach the event loop and
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interrupt running forever, then trigger our cleanup process, and does not
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need additional handling in this function.
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"""
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driver_cls = drivers.get_driver_class()
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await driver_cls.initialize(**data_manager.storage_details())
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redbot.logging.init_logging(
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level=cli_flags.logging_level, location=data_manager.core_data_path() / "logs"
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)
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log.debug("====Basic Config====")
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log.debug("Data Path: %s", data_manager._base_data_path())
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log.debug("Storage Type: %s", data_manager.storage_type())
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# lib folder has to be in sys.path before trying to load any 3rd-party cog (GH-3061)
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# We might want to change handling of requirements in Downloader at later date
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LIB_PATH = data_manager.cog_data_path(raw_name="Downloader") / "lib"
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LIB_PATH.mkdir(parents=True, exist_ok=True)
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if str(LIB_PATH) not in sys.path:
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sys.path.append(str(LIB_PATH))
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# "It's important to note that the global `working_set` object is initialized from
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# `sys.path` when `pkg_resources` is first imported, but is only updated if you do
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# all future `sys.path` manipulation via `pkg_resources` APIs. If you manually modify
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# `sys.path`, you must invoke the appropriate methods on the `working_set` instance
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# to keep it in sync."
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# Source: https://setuptools.readthedocs.io/en/latest/pkg_resources.html#workingset-objects
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pkg_resources.working_set.add_entry(str(LIB_PATH))
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sys.meta_path.insert(0, SharedLibImportWarner())
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if cli_flags.token:
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token = cli_flags.token
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else:
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token = os.environ.get("RED_TOKEN", None)
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if not token:
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token = await red._config.token()
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prefix = cli_flags.prefix or await red._config.prefix()
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if not (token and prefix):
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if cli_flags.no_prompt is False:
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new_token = await interactive_config(
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red, token_set=bool(token), prefix_set=bool(prefix)
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)
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if new_token:
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token = new_token
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else:
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log.critical("Token and prefix must be set in order to login.")
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sys.exit(1)
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if cli_flags.dry_run:
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await red.http.close()
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sys.exit(0)
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try:
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await red.start(token, bot=True, cli_flags=cli_flags)
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except discord.LoginFailure:
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log.critical("This token doesn't seem to be valid.")
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db_token = await red._config.token()
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if db_token and not cli_flags.no_prompt:
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if confirm("\nDo you want to reset the token?"):
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await red._config.token.set("")
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print("Token has been reset.")
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sys.exit(0)
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sys.exit(1)
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return None
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def handle_early_exit_flags(cli_flags: Namespace):
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if cli_flags.list_instances:
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list_instances()
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elif cli_flags.version:
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print("Red V3")
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print("Current Version: {}".format(__version__))
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sys.exit(0)
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elif cli_flags.debuginfo:
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debug_info()
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elif not cli_flags.instance_name and (not cli_flags.no_instance or cli_flags.edit):
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print("Error: No instance name was provided!")
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sys.exit(1)
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async def shutdown_handler(red, signal_type=None, exit_code=None):
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if signal_type:
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log.info("%s received. Quitting...", signal_type)
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# Do not collapse the below line into other logic
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# We need to renter this function
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# after it interrupts the event loop.
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sys.exit(ExitCodes.SHUTDOWN)
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elif exit_code is None:
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log.info("Shutting down from unhandled exception")
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red._shutdown_mode = ExitCodes.CRITICAL
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if exit_code is not None:
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red._shutdown_mode = exit_code
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try:
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await red.logout()
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finally:
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# Then cancels all outstanding tasks other than ourselves
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pending = [t for t in asyncio.all_tasks() if t is not asyncio.current_task()]
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[task.cancel() for task in pending]
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await asyncio.gather(*pending, return_exceptions=True)
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def global_exception_handler(red, loop, context):
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"""
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Logs unhandled exceptions in other tasks
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"""
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msg = context.get("exception", context["message"])
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# These will get handled later when it *also* kills loop.run_forever
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if not isinstance(msg, (KeyboardInterrupt, SystemExit)):
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if isinstance(msg, Exception):
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log.critical("Caught unhandled exception in task:\n", exc_info=msg)
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else:
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log.critical("Caught unhandled exception in task: %s", msg)
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def red_exception_handler(red, red_task: asyncio.Future):
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"""
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This is set as a done callback for Red
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must be used with functools.partial
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If the main bot.run dies for some reason,
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we don't want to swallow the exception and hang.
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"""
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try:
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red_task.result()
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except (SystemExit, KeyboardInterrupt, asyncio.CancelledError):
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pass # Handled by the global_exception_handler, or cancellation
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except Exception as exc:
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log.critical("The main bot task didn't handle an exception and has crashed", exc_info=exc)
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log.warning("Attempting to die as gracefully as possible...")
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red.loop.create_task(shutdown_handler(red))
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def main():
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red = None # Error handling for users misusing the bot
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cli_flags = parse_cli_flags(sys.argv[1:])
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handle_early_exit_flags(cli_flags)
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if cli_flags.edit:
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handle_edit(cli_flags)
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return
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try:
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loop = asyncio.new_event_loop()
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asyncio.set_event_loop(loop)
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if cli_flags.no_instance:
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print(
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"\033[1m"
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"Warning: The data will be placed in a temporary folder and removed on next system "
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"reboot."
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"\033[0m"
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)
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cli_flags.instance_name = "temporary_red"
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data_manager.create_temp_config()
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data_manager.load_basic_configuration(cli_flags.instance_name)
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red = Red(
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cli_flags=cli_flags, description="Red V3", dm_help=None, fetch_offline_members=True
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)
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if os.name != "nt":
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# None of this works on windows.
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# At least it's not a redundant handler...
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signals = (signal.SIGHUP, signal.SIGTERM, signal.SIGINT)
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for s in signals:
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loop.add_signal_handler(
|
|
s, lambda s=s: asyncio.create_task(shutdown_handler(red, s))
|
|
)
|
|
|
|
exc_handler = functools.partial(global_exception_handler, red)
|
|
loop.set_exception_handler(exc_handler)
|
|
# We actually can't (just) use asyncio.run here
|
|
# We probably could if we didnt support windows, but we might run into
|
|
# a scenario where this isn't true if anyone works on RPC more in the future
|
|
fut = loop.create_task(run_bot(red, cli_flags))
|
|
r_exc_handler = functools.partial(red_exception_handler, red)
|
|
fut.add_done_callback(r_exc_handler)
|
|
loop.run_forever()
|
|
except KeyboardInterrupt:
|
|
# We still have to catch this here too. (*joy*)
|
|
log.warning("Please do not use Ctrl+C to Shutdown Red! (attempting to die gracefully...)")
|
|
log.error("Received KeyboardInterrupt, treating as interrupt")
|
|
if red is not None:
|
|
loop.run_until_complete(shutdown_handler(red, signal.SIGINT))
|
|
except SystemExit as exc:
|
|
# We also have to catch this one here. Basically any exception which normally
|
|
# Kills the python interpreter (Base Exceptions minus asyncio.cancelled)
|
|
# We need to do something with prior to having the loop close
|
|
log.info("Shutting down with exit code: %s", exc.code)
|
|
if red is not None:
|
|
loop.run_until_complete(shutdown_handler(red, None, exc.code))
|
|
except Exception as exc: # Non standard case.
|
|
log.exception("Unexpected exception (%s): ", type(exc), exc_info=exc)
|
|
if red is not None:
|
|
loop.run_until_complete(shutdown_handler(red, None, ExitCodes.CRITICAL))
|
|
finally:
|
|
# Allows transports to close properly, and prevent new ones from being opened.
|
|
# Transports may still not be closed correcly on windows, see below
|
|
loop.run_until_complete(loop.shutdown_asyncgens())
|
|
# *we* aren't cleaning up more here, but it prevents
|
|
# a runtime error at the event loop on windows
|
|
# with resources which require longer to clean up.
|
|
# With other event loops, a failure to cleanup prior to here
|
|
# results in a resource warning instead
|
|
log.info("Please wait, cleaning up a bit more")
|
|
loop.run_until_complete(asyncio.sleep(2))
|
|
asyncio.set_event_loop(None)
|
|
loop.stop()
|
|
loop.close()
|
|
exit_code = red._shutdown_mode if red is not None else 1
|
|
sys.exit(exit_code)
|
|
|
|
|
|
if __name__ == "__main__":
|
|
main()
|