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Diffstat (limited to 'bot/exts/moderation/infraction/infractions.py')
| -rw-r--r-- | bot/exts/moderation/infraction/infractions.py | 399 |
1 files changed, 399 insertions, 0 deletions
diff --git a/bot/exts/moderation/infraction/infractions.py b/bot/exts/moderation/infraction/infractions.py new file mode 100644 index 000000000..7cf7075e6 --- /dev/null +++ b/bot/exts/moderation/infraction/infractions.py @@ -0,0 +1,399 @@ +import logging +import textwrap +import typing as t + +import discord +from discord import Member +from discord.ext import commands +from discord.ext.commands import Context, command + +from bot import constants +from bot.bot import Bot +from bot.constants import Event +from bot.converters import Expiry, FetchedMember +from bot.decorators import respect_role_hierarchy +from bot.exts.moderation.infraction import _utils +from bot.exts.moderation.infraction._scheduler import InfractionScheduler +from bot.exts.moderation.infraction._utils import UserSnowflake +from bot.utils.messages import format_user + +log = logging.getLogger(__name__) + + +class Infractions(InfractionScheduler, commands.Cog): + """Apply and pardon infractions on users for moderation purposes.""" + + category = "Moderation" + category_description = "Server moderation tools." + + def __init__(self, bot: Bot): + super().__init__(bot, supported_infractions={"ban", "kick", "mute", "note", "warning"}) + + self.category = "Moderation" + self._muted_role = discord.Object(constants.Roles.muted) + + @commands.Cog.listener() + async def on_member_join(self, member: Member) -> None: + """Reapply active mute infractions for returning members.""" + active_mutes = await self.bot.api_client.get( + "bot/infractions", + params={ + "active": "true", + "type": "mute", + "user__id": member.id + } + ) + + if active_mutes: + reason = f"Re-applying active mute: {active_mutes[0]['id']}" + action = member.add_roles(self._muted_role, reason=reason) + + await self.reapply_infraction(active_mutes[0], action) + + # region: Permanent infractions + + @command() + async def warn(self, ctx: Context, user: Member, *, reason: t.Optional[str] = None) -> None: + """Warn a user for the given reason.""" + infraction = await _utils.post_infraction(ctx, user, "warning", reason, active=False) + if infraction is None: + return + + await self.apply_infraction(ctx, infraction, user) + + @command() + async def kick(self, ctx: Context, user: Member, *, reason: t.Optional[str] = None) -> None: + """Kick a user for the given reason.""" + await self.apply_kick(ctx, user, reason) + + @command() + async def ban(self, ctx: Context, user: FetchedMember, *, reason: t.Optional[str] = None) -> None: + """Permanently ban a user for the given reason and stop watching them with Big Brother.""" + await self.apply_ban(ctx, user, reason) + + @command(aliases=('pban',)) + async def purgeban( + self, + ctx: Context, + user: FetchedMember, + purge_days: t.Optional[int] = 1, + *, + reason: t.Optional[str] = None + ) -> None: + """ + Same as ban but removes all their messages for the given number of days, default being 1. + + `purge_days` can only be values between 0 and 7. + Anything outside these bounds are automatically adjusted to their respective limits. + """ + await self.apply_ban(ctx, user, reason, max(min(purge_days, 7), 0)) + + # endregion + # region: Temporary infractions + + @command(aliases=["mute"]) + async def tempmute(self, ctx: Context, user: Member, duration: Expiry, *, reason: t.Optional[str] = None) -> None: + """ + Temporarily mute a user for the given reason and duration. + + A unit of time should be appended to the duration. + Units (∗case-sensitive): + \u2003`y` - years + \u2003`m` - months∗ + \u2003`w` - weeks + \u2003`d` - days + \u2003`h` - hours + \u2003`M` - minutes∗ + \u2003`s` - seconds + + Alternatively, an ISO 8601 timestamp can be provided for the duration. + """ + await self.apply_mute(ctx, user, reason, expires_at=duration) + + @command() + async def tempban( + self, + ctx: Context, + user: FetchedMember, + duration: Expiry, + *, + reason: t.Optional[str] = None + ) -> None: + """ + Temporarily ban a user for the given reason and duration. + + A unit of time should be appended to the duration. + Units (∗case-sensitive): + \u2003`y` - years + \u2003`m` - months∗ + \u2003`w` - weeks + \u2003`d` - days + \u2003`h` - hours + \u2003`M` - minutes∗ + \u2003`s` - seconds + + Alternatively, an ISO 8601 timestamp can be provided for the duration. + """ + await self.apply_ban(ctx, user, reason, expires_at=duration) + + # endregion + # region: Permanent shadow infractions + + @command(hidden=True) + async def note(self, ctx: Context, user: FetchedMember, *, reason: t.Optional[str] = None) -> None: + """Create a private note for a user with the given reason without notifying the user.""" + infraction = await _utils.post_infraction(ctx, user, "note", reason, hidden=True, active=False) + if infraction is None: + return + + await self.apply_infraction(ctx, infraction, user) + + @command(hidden=True, aliases=['shadowkick', 'skick']) + async def shadow_kick(self, ctx: Context, user: Member, *, reason: t.Optional[str] = None) -> None: + """Kick a user for the given reason without notifying the user.""" + await self.apply_kick(ctx, user, reason, hidden=True) + + @command(hidden=True, aliases=['shadowban', 'sban']) + async def shadow_ban(self, ctx: Context, user: FetchedMember, *, reason: t.Optional[str] = None) -> None: + """Permanently ban a user for the given reason without notifying the user.""" + await self.apply_ban(ctx, user, reason, hidden=True) + + # endregion + # region: Temporary shadow infractions + + @command(hidden=True, aliases=["shadowtempmute, stempmute", "shadowmute", "smute"]) + async def shadow_tempmute( + self, ctx: Context, + user: Member, + duration: Expiry, + *, + reason: t.Optional[str] = None + ) -> None: + """ + Temporarily mute a user for the given reason and duration without notifying the user. + + A unit of time should be appended to the duration. + Units (∗case-sensitive): + \u2003`y` - years + \u2003`m` - months∗ + \u2003`w` - weeks + \u2003`d` - days + \u2003`h` - hours + \u2003`M` - minutes∗ + \u2003`s` - seconds + + Alternatively, an ISO 8601 timestamp can be provided for the duration. + """ + await self.apply_mute(ctx, user, reason, expires_at=duration, hidden=True) + + @command(hidden=True, aliases=["shadowtempban, stempban"]) + async def shadow_tempban( + self, + ctx: Context, + user: FetchedMember, + duration: Expiry, + *, + reason: t.Optional[str] = None + ) -> None: + """ + Temporarily ban a user for the given reason and duration without notifying the user. + + A unit of time should be appended to the duration. + Units (∗case-sensitive): + \u2003`y` - years + \u2003`m` - months∗ + \u2003`w` - weeks + \u2003`d` - days + \u2003`h` - hours + \u2003`M` - minutes∗ + \u2003`s` - seconds + + Alternatively, an ISO 8601 timestamp can be provided for the duration. + """ + await self.apply_ban(ctx, user, reason, expires_at=duration, hidden=True) + + # endregion + # region: Remove infractions (un- commands) + + @command() + async def unmute(self, ctx: Context, user: FetchedMember) -> None: + """Prematurely end the active mute infraction for the user.""" + await self.pardon_infraction(ctx, "mute", user) + + @command() + async def unban(self, ctx: Context, user: FetchedMember) -> None: + """Prematurely end the active ban infraction for the user.""" + await self.pardon_infraction(ctx, "ban", user) + + # endregion + # region: Base apply functions + + async def apply_mute(self, ctx: Context, user: Member, reason: t.Optional[str], **kwargs) -> None: + """Apply a mute infraction with kwargs passed to `post_infraction`.""" + if await _utils.get_active_infraction(ctx, user, "mute"): + return + + infraction = await _utils.post_infraction(ctx, user, "mute", reason, active=True, **kwargs) + if infraction is None: + return + + self.mod_log.ignore(Event.member_update, user.id) + + async def action() -> None: + await user.add_roles(self._muted_role, reason=reason) + + log.trace(f"Attempting to kick {user} from voice because they've been muted.") + await user.move_to(None, reason=reason) + + await self.apply_infraction(ctx, infraction, user, action()) + + @respect_role_hierarchy(member_arg=2) + async def apply_kick(self, ctx: Context, user: Member, reason: t.Optional[str], **kwargs) -> None: + """Apply a kick infraction with kwargs passed to `post_infraction`.""" + infraction = await _utils.post_infraction(ctx, user, "kick", reason, active=False, **kwargs) + if infraction is None: + return + + self.mod_log.ignore(Event.member_remove, user.id) + + if reason: + reason = textwrap.shorten(reason, width=512, placeholder="...") + + action = user.kick(reason=reason) + await self.apply_infraction(ctx, infraction, user, action) + + @respect_role_hierarchy(member_arg=2) + async def apply_ban( + self, + ctx: Context, + user: UserSnowflake, + reason: t.Optional[str], + purge_days: t.Optional[int] = 0, + **kwargs + ) -> None: + """ + Apply a ban infraction with kwargs passed to `post_infraction`. + + Will also remove the banned user from the Big Brother watch list if applicable. + """ + # In the case of a permanent ban, we don't need get_active_infractions to tell us if one is active + is_temporary = kwargs.get("expires_at") is not None + active_infraction = await _utils.get_active_infraction(ctx, user, "ban", is_temporary) + + if active_infraction: + if is_temporary: + log.trace("Tempban ignored as it cannot overwrite an active ban.") + return + + if active_infraction.get('expires_at') is None: + log.trace("Permaban already exists, notify.") + await ctx.send(f":x: User is already permanently banned (#{active_infraction['id']}).") + return + + log.trace("Old tempban is being replaced by new permaban.") + await self.pardon_infraction(ctx, "ban", user, is_temporary) + + infraction = await _utils.post_infraction(ctx, user, "ban", reason, active=True, **kwargs) + if infraction is None: + return + + self.mod_log.ignore(Event.member_remove, user.id) + + if reason: + reason = textwrap.shorten(reason, width=512, placeholder="...") + + action = ctx.guild.ban(user, reason=reason, delete_message_days=purge_days) + await self.apply_infraction(ctx, infraction, user, action) + + if infraction.get('expires_at') is not None: + log.trace(f"Ban isn't permanent; user {user} won't be unwatched by Big Brother.") + return + + bb_cog = self.bot.get_cog("Big Brother") + if not bb_cog: + log.error(f"Big Brother cog not loaded; perma-banned user {user} won't be unwatched.") + return + + log.trace(f"Big Brother cog loaded; attempting to unwatch perma-banned user {user}.") + + bb_reason = "User has been permanently banned from the server. Automatically removed." + await bb_cog.apply_unwatch(ctx, user, bb_reason, send_message=False) + + # endregion + # region: Base pardon functions + + async def pardon_mute(self, user_id: int, guild: discord.Guild, reason: t.Optional[str]) -> t.Dict[str, str]: + """Remove a user's muted role, DM them a notification, and return a log dict.""" + user = guild.get_member(user_id) + log_text = {} + + if user: + # Remove the muted role. + self.mod_log.ignore(Event.member_update, user.id) + await user.remove_roles(self._muted_role, reason=reason) + + # DM the user about the expiration. + notified = await _utils.notify_pardon( + user=user, + title="You have been unmuted", + content="You may now send messages in the server.", + icon_url=_utils.INFRACTION_ICONS["mute"][1] + ) + + log_text["Member"] = format_user(user) + log_text["DM"] = "Sent" if notified else "**Failed**" + else: + log.info(f"Failed to unmute user {user_id}: user not found") + log_text["Failure"] = "User was not found in the guild." + + return log_text + + async def pardon_ban(self, user_id: int, guild: discord.Guild, reason: t.Optional[str]) -> t.Dict[str, str]: + """Remove a user's ban on the Discord guild and return a log dict.""" + user = discord.Object(user_id) + log_text = {} + + self.mod_log.ignore(Event.member_unban, user_id) + + try: + await guild.unban(user, reason=reason) + except discord.NotFound: + log.info(f"Failed to unban user {user_id}: no active ban found on Discord") + log_text["Note"] = "No active ban found on Discord." + + return log_text + + async def _pardon_action(self, infraction: _utils.Infraction) -> t.Optional[t.Dict[str, str]]: + """ + Execute deactivation steps specific to the infraction's type and return a log dict. + + If an infraction type is unsupported, return None instead. + """ + guild = self.bot.get_guild(constants.Guild.id) + user_id = infraction["user"] + reason = f"Infraction #{infraction['id']} expired or was pardoned." + + if infraction["type"] == "mute": + return await self.pardon_mute(user_id, guild, reason) + elif infraction["type"] == "ban": + return await self.pardon_ban(user_id, guild, reason) + + # endregion + + # This cannot be static (must have a __func__ attribute). + async def cog_check(self, ctx: Context) -> bool: + """Only allow moderators to invoke the commands in this cog.""" + return await commands.has_any_role(*constants.MODERATION_ROLES).predicate(ctx) + + # This cannot be static (must have a __func__ attribute). + async def cog_command_error(self, ctx: Context, error: Exception) -> None: + """Send a notification to the invoking context on a Union failure.""" + if isinstance(error, commands.BadUnionArgument): + if discord.User in error.converters or discord.Member in error.converters: + await ctx.send(str(error.errors[0])) + error.handled = True + + +def setup(bot: Bot) -> None: + """Load the Infractions cog.""" + bot.add_cog(Infractions(bot)) |