diff options
| -rw-r--r-- | bot/cogs/filtering.py | 172 |
1 files changed, 120 insertions, 52 deletions
diff --git a/bot/cogs/filtering.py b/bot/cogs/filtering.py index 76ea68660..ae77ad7f0 100644 --- a/bot/cogs/filtering.py +++ b/bot/cogs/filtering.py @@ -2,7 +2,7 @@ import asyncio import logging import re from datetime import datetime, timedelta -from typing import List, Mapping, Optional, Union +from typing import List, Mapping, Optional, Tuple, Union import dateutil import discord.errors @@ -200,24 +200,66 @@ class Filtering(Cog, Scheduler): # Update time when alert sent await self.name_alerts.set(member.id, datetime.utcnow().timestamp()) + async def _filter_eval(self, result: str, msg: Message) -> bool: + """ + Filter the result of an !eval to see if it violates any of our rules, and then respond accordingly. + + Also requires the original message, to check whether to filter and for mod logs. + Returns whether a filter was triggered or not. + """ + # Should we filter this message? + if self._check_filter(msg): + for filter_name, _filter in self.filters.items(): + # Is this specific filter enabled in the config? + # We also do not need to worry about filters that take the full message, + # since all we have is an arbitrary string. + if _filter["enabled"] and _filter["content_only"]: + match = await _filter["function"](result) + + if match: + # If this is a filter (not a watchlist), we set the variable so we know + # that it has been triggered + if _filter["type"] == "filter": + filter_triggered = True + + # We do not have to check against DM channels since !eval cannot be used there. + channel_str = f"in {msg.channel.mention}" + + message_content, additional_embeds, additional_embeds_msg = self._add_stats( + filter_name, match, result + ) + + message = ( + f"The {filter_name} {_filter['type']} was triggered " + f"by **{msg.author}** " + f"(`{msg.author.id}`) {channel_str} using !eval with " + f"[the following message]({msg.jump_url}):\n\n" + f"{message_content}" + ) + + log.debug(message) + + # Send pretty mod log embed to mod-alerts + await self.mod_log.send_log_message( + icon_url=Icons.filtering, + colour=Colour(Colours.soft_red), + title=f"{_filter['type'].title()} triggered!", + text=message, + thumbnail=msg.author.avatar_url_as(static_format="png"), + channel_id=Channels.mod_alerts, + ping_everyone=Filter.ping_everyone, + additional_embeds=additional_embeds, + additional_embeds_msg=additional_embeds_msg + ) + + break # We don't want multiple filters to trigger + + return filter_triggered + async def _filter_message(self, msg: Message, delta: Optional[int] = None) -> None: """Filter the input message to see if it violates any of our rules, and then respond accordingly.""" # Should we filter this message? - role_whitelisted = False - - if type(msg.author) is Member: # Only Member has roles, not User. - for role in msg.author.roles: - if role.id in Filter.role_whitelist: - role_whitelisted = True - - filter_message = ( - msg.channel.id not in Filter.channel_whitelist # Channel not in whitelist - and not role_whitelisted # Role not in whitelist - and not msg.author.bot # Author not a bot - ) - - # If none of the above, we can start filtering. - if filter_message: + if self._check_filter(msg): for filter_name, _filter in self.filters.items(): # Is this specific filter enabled in the config? if _filter["enabled"]: @@ -276,16 +318,9 @@ class Filtering(Cog, Scheduler): else: channel_str = f"in {msg.channel.mention}" - # Word and match stats for watch_regex - if filter_name == "watch_regex": - surroundings = match.string[max(match.start() - 10, 0): match.end() + 10] - message_content = ( - f"**Match:** '{match[0]}'\n" - f"**Location:** '...{escape_markdown(surroundings)}...'\n" - f"\n**Original Message:**\n{escape_markdown(msg.content)}" - ) - else: # Use content of discord Message - message_content = msg.content + message_content, additional_embeds, additional_embeds_msg = self._add_stats( + filter_name, match, msg.content + ) message = ( f"The {filter_name} {_filter['type']} was triggered " @@ -297,30 +332,6 @@ class Filtering(Cog, Scheduler): log.debug(message) - self.bot.stats.incr(f"filters.{filter_name}") - - additional_embeds = None - additional_embeds_msg = None - - # The function returns True for invalid invites. - # They have no data so additional embeds can't be created for them. - if filter_name == "filter_invites" and match is not True: - additional_embeds = [] - for invite, data in match.items(): - embed = discord.Embed(description=( - f"**Members:**\n{data['members']}\n" - f"**Active:**\n{data['active']}" - )) - embed.set_author(name=data["name"]) - embed.set_thumbnail(url=data["icon"]) - embed.set_footer(text=f"Guild Invite Code: {invite}") - additional_embeds.append(embed) - additional_embeds_msg = "For the following guild(s):" - - elif filter_name == "watch_rich_embeds": - additional_embeds = msg.embeds - additional_embeds_msg = "With the following embed(s):" - # Send pretty mod log embed to mod-alerts await self.mod_log.send_log_message( icon_url=Icons.filtering, @@ -336,6 +347,63 @@ class Filtering(Cog, Scheduler): break # We don't want multiple filters to trigger + def _add_stats(self, name: str, match: Union[re.Match, dict, bool, List[discord.Embed]], content: str) -> Tuple[ + str, Optional[List[discord.Embed]], Optional[str] + ]: + """Adds relevant statistical information to the relevant filter and increments the bot's stats.""" + # Word and match stats for watch_regex + if name == "watch_regex": + surroundings = match.string[max(match.start() - 10, 0): match.end() + 10] + message_content = ( + f"**Match:** '{match[0]}'\n" + f"**Location:** '...{escape_markdown(surroundings)}...'\n" + f"\n**Original Message:**\n{escape_markdown(content)}" + ) + else: # Use original content + message_content = content + + additional_embeds = None + additional_embeds_msg = None + + self.bot.stats.incr(f"filters.{name}") + + # The function returns True for invalid invites. + # They have no data so additional embeds can't be created for them. + if name == "filter_invites" and match is not True: + additional_embeds = [] + for invite, data in match.items(): + embed = discord.Embed(description=( + f"**Members:**\n{data['members']}\n" + f"**Active:**\n{data['active']}" + )) + embed.set_author(name=data["name"]) + embed.set_thumbnail(url=data["icon"]) + embed.set_footer(text=f"Guild Invite Code: {invite}") + additional_embeds.append(embed) + additional_embeds_msg = "For the following guild(s):" + + elif name == "watch_rich_embeds": + additional_embeds = match + additional_embeds_msg = "With the following embed(s):" + + return message_content, additional_embeds, additional_embeds_msg + + @staticmethod + def _check_filter(msg: Message) -> bool: + """Check whitelists to see if we should filter this message.""" + role_whitelisted = False + + if type(msg.author) is Member: # Only Member has roles, not User. + for role in msg.author.roles: + if role.id in Filter.role_whitelist: + role_whitelisted = True + + return ( + msg.channel.id not in Filter.channel_whitelist # Channel not in whitelist + and not role_whitelisted # Role not in whitelist + and not msg.author.bot # Author not a bot + ) + @staticmethod async def _has_watch_regex_match(text: str) -> Union[bool, re.Match]: """ @@ -428,7 +496,7 @@ class Filtering(Cog, Scheduler): return invite_data if invite_data else False @staticmethod - async def _has_rich_embed(msg: Message) -> bool: + async def _has_rich_embed(msg: Message) -> Union[bool, List[discord.Embed]]: """Determines if `msg` contains any rich embeds not auto-generated from a URL.""" if msg.embeds: for embed in msg.embeds: @@ -437,7 +505,7 @@ class Filtering(Cog, Scheduler): if not embed.url or embed.url not in urls: # If `embed.url` does not exist or if `embed.url` is not part of the content # of the message, it's unlikely to be an auto-generated embed by Discord. - return True + return msg.embeds else: log.trace( "Found a rich embed sent by a regular user account, " |