49 lines
1.7 KiB
TypeScript
49 lines
1.7 KiB
TypeScript
/*
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Copyright 2023 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 { MatrixEvent, Room } from "matrix-js-sdk/src/matrix";
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import DMRoomMap from "../DMRoomMap";
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import { privateShouldBeEncrypted } from "../rooms";
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/**
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* Tests whether a DM room with exactly one third-party invite should be encrypted.
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* If it should be encrypted, the third-party invitation event is also returned.
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*/
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export const shouldEncryptRoomWithSingle3rdPartyInvite = (
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room: Room,
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): { shouldEncrypt: true; inviteEvent: MatrixEvent } | { shouldEncrypt: false; inviteEvent?: undefined } => {
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// encryption not promoted via .well-known
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if (!privateShouldBeEncrypted()) return { shouldEncrypt: false };
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// not a DM room
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if (!DMRoomMap.shared().getRoomIds().has(room.roomId)) return { shouldEncrypt: false };
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// more than one room member / invite
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if (room.getInvitedAndJoinedMemberCount() !== 1) return { shouldEncrypt: false };
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const thirdPartyInvites = room.currentState.getStateEvents("m.room.third_party_invite") || [];
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if (thirdPartyInvites.length === 1) {
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return {
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shouldEncrypt: true,
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inviteEvent: thirdPartyInvites[0],
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};
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}
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return { shouldEncrypt: false };
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};
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