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https://github.com/vector-im/element-web.git
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69ee8fd96a
* Add commercial licence and update config files * Update license in headers * Revert "Update license in headers" This reverts commit 7ed7949485e88889a9ffc8075a9df1f8e936777e. * Update only spdx id * Remove LicenseRef- from package.json LicenseRef- no longer allowed in npm v3 package.json This fixes the warning in the logs and failing build check.
92 lines
3.2 KiB
TypeScript
92 lines
3.2 KiB
TypeScript
/*
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* Copyright 2024 New Vector Ltd.
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* Copyright 2023 The Matrix.org Foundation C.I.C.
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* Copyright 2021 Šimon Brandner <simon.bra.ag@gmail.com>
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*
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* SPDX-License-Identifier: AGPL-3.0-only OR GPL-3.0-only OR LicenseRef-Element-Commercial
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* Please see LICENSE files in the repository root for full details.
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*/
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import { IContent, IEventRelation, MatrixEvent, THREAD_RELATION_TYPE } from "matrix-js-sdk/src/matrix";
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import sanitizeHtml from "sanitize-html";
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import { PERMITTED_URL_SCHEMES } from "./UrlUtils";
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export function getParentEventId(ev?: MatrixEvent): string | undefined {
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if (!ev || ev.isRedacted()) return;
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if (ev.replyEventId) {
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return ev.replyEventId;
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}
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}
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// Part of Replies fallback support
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export function stripPlainReply(body: string): string {
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// Removes lines beginning with `> ` until you reach one that doesn't.
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const lines = body.split("\n");
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while (lines.length && lines[0].startsWith("> ")) lines.shift();
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// Reply fallback has a blank line after it, so remove it to prevent leading newline
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if (lines[0] === "") lines.shift();
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return lines.join("\n");
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}
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// Part of Replies fallback support - MUST NOT BE RENDERED DIRECTLY - UNSAFE HTML
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export function stripHTMLReply(html: string): string {
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// Sanitize the original HTML for inclusion in <mx-reply>. We allow
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// any HTML, since the original sender could use special tags that we
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// don't recognize, but want to pass along to any recipients who do
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// recognize them -- recipients should be sanitizing before displaying
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// anyways. However, we sanitize to 1) remove any mx-reply, so that we
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// don't generate a nested mx-reply, and 2) make sure that the HTML is
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// properly formatted (e.g. tags are closed where necessary)
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return sanitizeHtml(html, {
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allowedTags: false, // false means allow everything
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allowedAttributes: false,
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allowVulnerableTags: true, // silence xss warning, we won't be rendering directly this, so it is safe to do
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// we somehow can't allow all schemes, so we allow all that we
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// know of and mxc (for img tags)
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allowedSchemes: [...PERMITTED_URL_SCHEMES, "mxc"],
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exclusiveFilter: (frame) => frame.tag === "mx-reply",
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});
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}
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export function makeReplyMixIn(ev?: MatrixEvent): IEventRelation {
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if (!ev) return {};
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const mixin: IEventRelation = {
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"m.in_reply_to": {
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event_id: ev.getId(),
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},
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};
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if (ev.threadRootId) {
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mixin.is_falling_back = false;
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}
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return mixin;
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}
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export function shouldDisplayReply(event: MatrixEvent): boolean {
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if (event.isRedacted()) {
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return false;
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}
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const inReplyTo = event.getWireContent()?.["m.relates_to"]?.["m.in_reply_to"];
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if (!inReplyTo) {
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return false;
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}
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const relation = event.getRelation();
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if (relation?.rel_type === THREAD_RELATION_TYPE.name && relation?.is_falling_back) {
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return false;
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}
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return !!inReplyTo.event_id;
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}
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export function addReplyToMessageContent(content: IContent, replyToEvent: MatrixEvent): void {
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content["m.relates_to"] = {
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...(content["m.relates_to"] || {}),
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...makeReplyMixIn(replyToEvent),
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};
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}
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