2018-11-25 17:04:26 +02:00
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import { Plugin } from "knub";
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import { Channel, User } from "eris";
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2018-07-31 02:42:45 +03:00
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import {
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getEmojiInString,
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2018-08-01 19:13:32 +03:00
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getRoleMentions,
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2018-07-31 02:42:45 +03:00
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getUrlsInString,
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2018-08-01 19:13:32 +03:00
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getUserMentions,
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2018-08-01 20:21:55 +03:00
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stripObjectToScalars,
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trimLines
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2018-07-31 02:42:45 +03:00
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} from "../utils";
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import { LogType } from "../data/LogType";
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import { GuildLogs } from "../data/GuildLogs";
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2018-10-26 06:41:20 +03:00
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import { CaseTypes } from "../data/CaseTypes";
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2018-08-18 19:51:28 +03:00
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import { GuildArchives } from "../data/GuildArchives";
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import moment from "moment-timezone";
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2018-11-24 17:12:36 +02:00
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import { SavedMessage } from "../data/entities/SavedMessage";
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import { GuildSavedMessages } from "../data/GuildSavedMessages";
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2018-11-25 17:04:26 +02:00
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import { GuildActions } from "../data/GuildActions";
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import { Case } from "../data/entities/Case";
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import { GuildMutes } from "../data/GuildMutes";
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2018-07-31 02:42:45 +03:00
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enum RecentActionType {
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Message = 1,
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Mention,
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Link,
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Attachment,
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Emoji,
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2018-10-26 06:41:20 +03:00
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Newline,
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Censor
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2018-07-31 02:42:45 +03:00
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}
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interface IRecentAction {
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type: RecentActionType;
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userId: string;
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channelId: string;
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2018-11-24 17:12:36 +02:00
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savedMessage: SavedMessage;
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2018-07-31 02:42:45 +03:00
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timestamp: number;
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count: number;
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}
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2018-08-01 19:13:32 +03:00
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const MAX_INTERVAL = 300;
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2018-11-24 18:39:17 +02:00
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const SPAM_ARCHIVE_EXPIRY_DAYS = 90;
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2018-08-18 19:51:28 +03:00
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2018-07-31 02:42:45 +03:00
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export class SpamPlugin extends Plugin {
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2019-01-15 04:03:04 +02:00
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public static pluginName = "spam";
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2019-01-03 06:15:28 +02:00
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2018-11-25 17:04:26 +02:00
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protected actions: GuildActions;
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2018-07-31 02:42:45 +03:00
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protected logs: GuildLogs;
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2018-08-18 19:51:28 +03:00
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protected archives: GuildArchives;
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2018-11-24 17:12:36 +02:00
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protected savedMessages: GuildSavedMessages;
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2018-11-25 17:04:26 +02:00
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protected mutes: GuildMutes;
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2018-11-24 17:12:36 +02:00
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private onMessageCreateFn;
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2018-07-31 02:42:45 +03:00
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2018-08-18 19:21:39 +03:00
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// Handle spam detection with a queue so we don't have overlapping detections on the same user
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protected spamDetectionQueue: Promise<void>;
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// List of recent potentially-spammy actions
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2018-07-31 02:42:45 +03:00
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protected recentActions: IRecentAction[];
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2018-08-18 19:21:39 +03:00
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// A map of userId => channelId => msgId
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// Keeps track of the last handled (= spam detected and acted on) message ID per user, per channel
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// TODO: Prevent this from growing infinitely somehow
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protected lastHandledMsgIds: Map<string, Map<string, string>>;
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2018-07-31 02:42:45 +03:00
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private expiryInterval;
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getDefaultOptions() {
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return {
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config: {
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max_messages: null,
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max_mentions: null,
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max_links: null,
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max_attachments: null,
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max_emojis: null,
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max_newlines: null,
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max_duplicates: null
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2018-08-02 22:22:51 +03:00
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},
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overrides: [
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{
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level: ">=50",
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config: {
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max_messages: null,
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max_mentions: null,
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max_links: null,
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max_attachments: null,
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max_emojis: null,
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max_newlines: null,
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max_duplicates: null
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}
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}
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]
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2018-07-31 02:42:45 +03:00
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};
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}
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onLoad() {
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2018-11-25 17:04:26 +02:00
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this.actions = GuildActions.getInstance(this.guildId);
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2018-07-31 02:42:45 +03:00
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this.logs = new GuildLogs(this.guildId);
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2018-10-26 06:41:20 +03:00
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this.archives = GuildArchives.getInstance(this.guildId);
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2018-11-24 17:12:36 +02:00
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this.savedMessages = GuildSavedMessages.getInstance(this.guildId);
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2018-11-25 17:04:26 +02:00
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this.mutes = GuildMutes.getInstance(this.guildId);
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2018-08-18 19:21:39 +03:00
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2018-07-31 02:42:45 +03:00
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this.recentActions = [];
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2018-08-18 19:21:39 +03:00
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this.expiryInterval = setInterval(() => this.clearOldRecentActions(), 1000 * 60);
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this.lastHandledMsgIds = new Map();
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this.spamDetectionQueue = Promise.resolve();
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2018-11-24 17:12:36 +02:00
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this.onMessageCreateFn = this.onMessageCreate.bind(this);
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this.savedMessages.events.on("create", this.onMessageCreateFn);
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2018-07-31 02:42:45 +03:00
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}
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onUnload() {
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clearInterval(this.expiryInterval);
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2018-11-24 17:12:36 +02:00
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this.savedMessages.events.off("create", this.onMessageCreateFn);
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2018-07-31 02:42:45 +03:00
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}
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addRecentAction(
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type: RecentActionType,
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userId: string,
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channelId: string,
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2018-11-24 17:12:36 +02:00
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savedMessage: SavedMessage,
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2018-07-31 02:42:45 +03:00
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timestamp: number,
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count = 1
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) {
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2018-11-24 17:12:36 +02:00
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this.recentActions.push({ type, userId, channelId, savedMessage, timestamp, count });
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2018-07-31 02:42:45 +03:00
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}
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2018-08-01 19:13:32 +03:00
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getRecentActions(type: RecentActionType, userId: string, channelId: string, since: number) {
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return this.recentActions.filter(action => {
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if (action.timestamp < since) return false;
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if (action.type !== type) return false;
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if (action.channelId !== channelId) return false;
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2018-08-03 11:23:08 +03:00
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if (action.userId !== userId) return false;
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2018-08-01 19:13:32 +03:00
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return true;
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});
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}
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2018-07-31 02:42:45 +03:00
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getRecentActionCount(type: RecentActionType, userId: string, channelId: string, since: number) {
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return this.recentActions.reduce((count, action) => {
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if (action.timestamp < since) return count;
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if (action.type !== type) return count;
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if (action.channelId !== channelId) return count;
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2018-08-03 11:23:08 +03:00
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if (action.userId !== userId) return false;
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2018-07-31 02:42:45 +03:00
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return count + action.count;
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}, 0);
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}
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clearRecentUserActions(type: RecentActionType, userId: string, channelId: string) {
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this.recentActions = this.recentActions.filter(action => {
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return action.type !== type || action.userId !== userId || action.channelId !== channelId;
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});
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}
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clearOldRecentActions() {
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// TODO: Figure out expiry time from longest interval in the config?
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2018-08-01 19:13:32 +03:00
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const expiryTimestamp = Date.now() - 1000 * MAX_INTERVAL;
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2018-07-31 02:42:45 +03:00
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this.recentActions = this.recentActions.filter(action => action.timestamp >= expiryTimestamp);
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}
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2018-12-22 13:06:40 +02:00
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async saveSpamArchives(savedMessages: SavedMessage[], channel: Channel) {
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2018-11-24 18:39:17 +02:00
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const expiresAt = moment().add(SPAM_ARCHIVE_EXPIRY_DAYS, "days");
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2018-12-22 13:06:40 +02:00
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const archiveId = await this.archives.createFromSavedMessages(savedMessages, this.guild, expiresAt);
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2018-08-01 20:09:51 +03:00
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2019-01-15 04:03:04 +02:00
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const baseUrl = this.knub.getGlobalConfig().url;
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return this.archives.getUrl(baseUrl, archiveId);
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2018-08-01 20:09:51 +03:00
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}
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2018-08-18 19:21:39 +03:00
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async logAndDetectSpam(
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2018-11-24 17:12:36 +02:00
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savedMessage: SavedMessage,
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2018-07-31 02:42:45 +03:00
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type: RecentActionType,
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spamConfig: any,
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actionCount: number,
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description: string
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) {
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if (actionCount === 0) return;
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2018-08-18 19:21:39 +03:00
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// Make sure we're not handling some messages twice
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2018-11-24 17:12:36 +02:00
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if (this.lastHandledMsgIds.has(savedMessage.user_id)) {
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const channelMap = this.lastHandledMsgIds.get(savedMessage.user_id);
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if (channelMap.has(savedMessage.channel_id)) {
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const lastHandledMsgId = channelMap.get(savedMessage.channel_id);
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if (lastHandledMsgId >= savedMessage.id) return;
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2018-08-18 19:21:39 +03:00
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}
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}
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this.spamDetectionQueue = this.spamDetectionQueue.then(
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async () => {
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2018-11-24 17:12:36 +02:00
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const timestamp = moment(savedMessage.posted_at).valueOf();
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const member = this.guild.members.get(savedMessage.user_id);
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2018-08-18 19:21:39 +03:00
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// Log this action...
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2018-11-24 17:12:36 +02:00
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this.addRecentAction(type, savedMessage.user_id, savedMessage.channel_id, savedMessage, timestamp, actionCount);
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2018-08-01 19:13:32 +03:00
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2018-08-18 19:21:39 +03:00
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// ...and then check if it trips the spam filters
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2018-11-24 17:12:36 +02:00
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const since = timestamp - 1000 * spamConfig.interval;
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const recentActionsCount = this.getRecentActionCount(
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type,
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savedMessage.user_id,
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savedMessage.channel_id,
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since
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);
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2018-07-31 02:42:45 +03:00
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2018-08-18 19:21:39 +03:00
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// If the user tripped the spam filter...
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if (recentActionsCount > spamConfig.count) {
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2018-11-24 17:12:36 +02:00
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const recentActions = this.getRecentActions(type, savedMessage.user_id, savedMessage.channel_id, since);
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2018-07-31 02:42:45 +03:00
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2018-08-18 19:21:39 +03:00
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// Start by muting them, if enabled
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2018-11-25 17:04:26 +02:00
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if (spamConfig.mute && member) {
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2018-08-18 19:21:39 +03:00
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const muteTime = spamConfig.mute_time ? spamConfig.mute_time * 60 * 1000 : 120 * 1000;
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2018-11-25 17:04:26 +02:00
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this.logs.ignoreLog(LogType.MEMBER_ROLE_ADD, savedMessage.user_id);
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this.actions.fire("mute", { member, muteTime, reason: "Automatic spam detection" });
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2018-08-18 19:21:39 +03:00
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}
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// Get the offending message IDs
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// We also get the IDs of any messages after the last offending message, to account for lag before detection
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2018-11-24 17:12:36 +02:00
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const savedMessages = recentActions.map(a => a.savedMessage);
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const msgIds = savedMessages.map(m => m.id);
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2018-08-18 19:21:39 +03:00
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const lastDetectedMsgId = msgIds[msgIds.length - 1];
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2018-11-24 17:12:36 +02:00
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const additionalMessages = await this.savedMessages.getUserMessagesByChannelAfterId(
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savedMessage.user_id,
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savedMessage.channel_id,
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lastDetectedMsgId
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);
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2018-08-18 19:21:39 +03:00
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additionalMessages.forEach(m => msgIds.push(m.id));
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// Then, if enabled, remove the spam messages
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if (spamConfig.clean !== false) {
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msgIds.forEach(id => this.logs.ignoreLog(LogType.MESSAGE_DELETE, id));
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2018-11-24 17:12:36 +02:00
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this.bot.deleteMessages(savedMessage.channel_id, msgIds);
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2018-08-18 19:21:39 +03:00
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}
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// Store the ID of the last handled message
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2018-11-24 17:12:36 +02:00
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const uniqueMessages = Array.from(new Set([...savedMessages, ...additionalMessages]));
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2018-08-18 19:21:39 +03:00
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uniqueMessages.sort((a, b) => (a.id > b.id ? 1 : -1));
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2018-11-24 17:12:36 +02:00
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const lastHandledMsgId = uniqueMessages.reduce((last: string, m: SavedMessage): string => {
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2018-08-18 19:21:39 +03:00
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return !last || m.id > last ? m.id : last;
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}, null);
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2018-11-24 17:12:36 +02:00
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if (!this.lastHandledMsgIds.has(savedMessage.user_id)) {
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this.lastHandledMsgIds.set(savedMessage.user_id, new Map());
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2018-08-18 19:21:39 +03:00
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}
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2018-11-24 17:12:36 +02:00
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const channelMap = this.lastHandledMsgIds.get(savedMessage.user_id);
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channelMap.set(savedMessage.channel_id, lastHandledMsgId);
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2018-08-18 19:21:39 +03:00
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// Clear the handled actions from recentActions
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2018-11-24 17:12:36 +02:00
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this.clearRecentUserActions(type, savedMessage.user_id, savedMessage.channel_id);
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2018-08-18 19:21:39 +03:00
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// Generate a log from the detected messages
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2018-11-24 17:12:36 +02:00
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const channel = this.guild.channels.get(savedMessage.channel_id);
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2018-12-22 13:06:40 +02:00
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const archiveUrl = await this.saveSpamArchives(uniqueMessages, channel);
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2018-08-18 19:21:39 +03:00
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// Create a case and log the actions taken above
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2018-10-26 06:41:20 +03:00
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const caseType = spamConfig.mute ? CaseTypes.Mute : CaseTypes.Note;
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2018-08-18 19:21:39 +03:00
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const caseText = trimLines(`
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Automatic spam detection: ${description} (over ${spamConfig.count} in ${spamConfig.interval}s)
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2018-11-24 18:39:17 +02:00
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${archiveUrl}
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2018-08-18 19:21:39 +03:00
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`);
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this.logs.log(LogType.SPAM_DETECTED, {
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2018-11-24 17:12:36 +02:00
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member: stripObjectToScalars(member, ["user"]),
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channel: stripObjectToScalars(channel),
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2018-08-18 19:21:39 +03:00
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description,
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limit: spamConfig.count,
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interval: spamConfig.interval,
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2018-11-24 18:39:17 +02:00
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archiveUrl
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2018-08-18 19:21:39 +03:00
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});
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2018-11-25 17:04:26 +02:00
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const theCase: Case = await this.actions.fire("createCase", {
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userId: savedMessage.user_id,
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modId: this.bot.user.id,
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type: caseType,
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reason: caseText,
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automatic: true
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});
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2018-08-18 19:21:39 +03:00
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// For mutes, also set the mute's case id (for !mutes)
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2018-11-24 17:12:36 +02:00
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if (spamConfig.mute && member) {
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2018-11-25 17:04:26 +02:00
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await this.mutes.setCaseId(savedMessage.user_id, theCase.id);
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2018-08-18 19:21:39 +03:00
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}
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}
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},
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err => {
|
|
|
|
console.error("Error while detecting spam:");
|
|
|
|
console.error(err);
|
|
|
|
}
|
|
|
|
);
|
2018-07-31 02:42:45 +03:00
|
|
|
}
|
|
|
|
|
2018-10-26 06:41:20 +03:00
|
|
|
// For interoperability with the Censor plugin
|
2018-11-24 17:12:36 +02:00
|
|
|
async logCensor(savedMessage: SavedMessage) {
|
|
|
|
const spamConfig = this.configValueForMemberIdAndChannelId(
|
|
|
|
savedMessage.user_id,
|
|
|
|
savedMessage.channel_id,
|
|
|
|
"max_censor"
|
|
|
|
);
|
2018-10-26 06:41:20 +03:00
|
|
|
if (spamConfig) {
|
2018-11-24 17:12:36 +02:00
|
|
|
this.logAndDetectSpam(savedMessage, RecentActionType.Censor, spamConfig, 1, "too many censored messages");
|
2018-10-26 06:41:20 +03:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2018-11-24 17:12:36 +02:00
|
|
|
async onMessageCreate(savedMessage: SavedMessage) {
|
|
|
|
if (savedMessage.is_bot) return;
|
2018-07-31 02:42:45 +03:00
|
|
|
|
2018-11-24 17:12:36 +02:00
|
|
|
const maxMessages = this.configValueForMemberIdAndChannelId(
|
|
|
|
savedMessage.user_id,
|
|
|
|
savedMessage.channel_id,
|
|
|
|
"max_messages"
|
|
|
|
);
|
2018-07-31 02:42:45 +03:00
|
|
|
if (maxMessages) {
|
2018-11-24 17:12:36 +02:00
|
|
|
this.logAndDetectSpam(savedMessage, RecentActionType.Message, maxMessages, 1, "too many messages");
|
2018-07-31 02:42:45 +03:00
|
|
|
}
|
|
|
|
|
2018-11-24 17:12:36 +02:00
|
|
|
const maxMentions = this.configValueForMemberIdAndChannelId(
|
|
|
|
savedMessage.user_id,
|
|
|
|
savedMessage.channel_id,
|
|
|
|
"max_mentions"
|
|
|
|
);
|
|
|
|
const mentions = savedMessage.data.content
|
|
|
|
? [...getUserMentions(savedMessage.data.content), ...getRoleMentions(savedMessage.data.content)]
|
|
|
|
: [];
|
2018-08-01 19:13:32 +03:00
|
|
|
if (maxMentions && mentions.length) {
|
2018-11-24 17:12:36 +02:00
|
|
|
this.logAndDetectSpam(savedMessage, RecentActionType.Mention, maxMentions, mentions.length, "too many mentions");
|
2018-07-31 02:42:45 +03:00
|
|
|
}
|
|
|
|
|
2018-11-24 17:12:36 +02:00
|
|
|
const maxLinks = this.configValueForMemberIdAndChannelId(
|
|
|
|
savedMessage.user_id,
|
|
|
|
savedMessage.channel_id,
|
|
|
|
"max_links"
|
|
|
|
);
|
|
|
|
if (maxLinks && savedMessage.data.content) {
|
|
|
|
const links = getUrlsInString(savedMessage.data.content);
|
|
|
|
this.logAndDetectSpam(savedMessage, RecentActionType.Link, maxLinks, links.length, "too many links");
|
2018-07-31 02:42:45 +03:00
|
|
|
}
|
|
|
|
|
2018-11-24 17:12:36 +02:00
|
|
|
const maxAttachments = this.configValueForMemberIdAndChannelId(
|
|
|
|
savedMessage.user_id,
|
|
|
|
savedMessage.channel_id,
|
|
|
|
"max_attachments"
|
|
|
|
);
|
|
|
|
if (maxAttachments && savedMessage.data.attachments) {
|
2018-08-18 19:21:39 +03:00
|
|
|
this.logAndDetectSpam(
|
2018-11-24 17:12:36 +02:00
|
|
|
savedMessage,
|
2018-07-31 02:42:45 +03:00
|
|
|
RecentActionType.Attachment,
|
|
|
|
maxAttachments,
|
2018-11-24 17:12:36 +02:00
|
|
|
savedMessage.data.attachments.length,
|
2018-07-31 02:42:45 +03:00
|
|
|
"too many attachments"
|
|
|
|
);
|
|
|
|
}
|
|
|
|
|
2018-11-24 17:12:36 +02:00
|
|
|
const maxEmoji = this.configValueForMemberIdAndChannelId(
|
|
|
|
savedMessage.user_id,
|
|
|
|
savedMessage.channel_id,
|
2019-01-09 10:36:49 +02:00
|
|
|
"max_emojis"
|
2018-11-24 17:12:36 +02:00
|
|
|
);
|
|
|
|
if (maxEmoji && savedMessage.data.content) {
|
|
|
|
const emojiCount = getEmojiInString(savedMessage.data.content).length;
|
|
|
|
this.logAndDetectSpam(savedMessage, RecentActionType.Emoji, maxEmoji, emojiCount, "too many emoji");
|
2018-07-31 02:42:45 +03:00
|
|
|
}
|
|
|
|
|
2018-11-24 17:12:36 +02:00
|
|
|
const maxNewlines = this.configValueForMemberIdAndChannelId(
|
|
|
|
savedMessage.user_id,
|
|
|
|
savedMessage.channel_id,
|
|
|
|
"max_newlines"
|
|
|
|
);
|
|
|
|
if (maxNewlines && savedMessage.data.content) {
|
|
|
|
const newlineCount = (savedMessage.data.content.match(/\n/g) || []).length;
|
|
|
|
this.logAndDetectSpam(savedMessage, RecentActionType.Newline, maxNewlines, newlineCount, "too many newlines");
|
2018-07-31 02:42:45 +03:00
|
|
|
}
|
|
|
|
|
|
|
|
// TODO: Max duplicates
|
|
|
|
}
|
|
|
|
}
|