mirror of
https://github.com/matrix-org/mjolnir.git
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50 lines
2.1 KiB
TypeScript
50 lines
2.1 KiB
TypeScript
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/*
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Copyright 2019 - 2021 The Matrix.org Foundation C.I.C.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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import { IProtection } from "./IProtection";
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import { Mjolnir } from "../Mjolnir";
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import { LogLevel, Permalinks, UserID } from "matrix-bot-sdk";
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import { logMessage } from "../LogProxy";
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import config from "../config";
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export class MessageIsMedia implements IProtection {
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constructor() {
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}
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public get name(): string {
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return 'MessageIsMediaProtection';
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}
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public async handleEvent(mjolnir: Mjolnir, roomId: string, event: any): Promise<any> {
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if (event['type'] === 'm.room.message') {
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const content = event['content'] || {};
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const msgtype = content['msgtype'] || 'm.text';
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const formattedBody = content['formatted_body'] || '';
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const isMedia = msgtype === 'm.image' || msgtype === 'm.video' || formattedBody.toLowerCase().includes('<img');
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if (isMedia) {
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await logMessage(LogLevel.WARN, "MessageIsMedia", `Redacting event from ${event['sender']} for posting an image/video. ${Permalinks.forEvent(roomId, event['event_id'], [new UserID(await mjolnir.client.getUserId()).domain])}`);
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// Redact the event
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if (!config.noop) {
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await mjolnir.client.redactEvent(roomId, event['event_id'], "Images/videos are not permitted here");
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} else {
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await logMessage(LogLevel.WARN, "MessageIsMedia", `Tried to redact ${event['event_id']} in ${roomId} but Mjolnir is running in no-op mode`, roomId);
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}
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}
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}
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}
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}
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