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Merge pull request #4925 from matrix-org/t3chguy/room-list/14352

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Use html innerText for org.matrix.custom.html m.room.message room list previews
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Michael Telatynski 2020-07-08 13:23:58 +01:00 committed by GitHub
commit 5ef93686d9
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4 changed files with 105 additions and 61 deletions
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2
package.json
View file

@ -122,6 +122,7 @@
"@types/classnames": "^2.2.10",
"@types/counterpart": "^0.18.1",
"@types/flux": "^3.1.9",
"@types/linkifyjs": "^2.1.3",
"@types/lodash": "^4.14.152",
"@types/modernizr": "^3.5.3",
"@types/node": "^12.12.41",
@ -129,6 +130,7 @@
"@types/react": "^16.9",
"@types/react-dom": "^16.9.8",
"@types/react-transition-group": "^4.4.0",
"@types/sanitize-html": "^1.23.3",
"@types/zxcvbn": "^4.4.0",
"babel-eslint": "^10.0.3",
"babel-jest": "^24.9.0",

134
src/HtmlUtils.js → src/HtmlUtils.tsx
View file

@ -17,10 +17,6 @@ See the License for the specific language governing permissions and
limitations under the License.
*/
'use strict';
import ReplyThread from "./components/views/elements/ReplyThread";
import React from 'react';
import sanitizeHtml from 'sanitize-html';
import * as linkify from 'linkifyjs';
@ -28,12 +24,13 @@ import linkifyMatrix from './linkify-matrix';
import _linkifyElement from 'linkifyjs/element';
import _linkifyString from 'linkifyjs/string';
import classNames from 'classnames';
import {MatrixClientPeg} from './MatrixClientPeg';
import EMOJIBASE_REGEX from 'emojibase-regex';
import url from 'url';
import EMOJIBASE_REGEX from 'emojibase-regex';
import {MatrixClientPeg} from './MatrixClientPeg';
import {tryTransformPermalinkToLocalHref} from "./utils/permalinks/Permalinks";
import {SHORTCODE_TO_EMOJI, getEmojiFromUnicode} from "./emoji";
import ReplyThread from "./components/views/elements/ReplyThread";
linkifyMatrix(linkify);
@ -64,7 +61,7 @@ const PERMITTED_URL_SCHEMES = ['http', 'https', 'ftp', 'mailto', 'magnet'];
* need emojification.
* unicodeToImage uses this function.
*/
function mightContainEmoji(str) {
function mightContainEmoji(str: string) {
return SURROGATE_PAIR_PATTERN.test(str) || SYMBOL_PATTERN.test(str);
}
@ -74,7 +71,7 @@ function mightContainEmoji(str) {
* @param {String} char The emoji character
* @return {String} The shortcode (such as :thumbup:)
*/
export function unicodeToShortcode(char) {
export function unicodeToShortcode(char: string) {
const data = getEmojiFromUnicode(char);
return (data && data.shortcodes ? `:${data.shortcodes[0]}:` : '');
}
@ -85,7 +82,7 @@ export function unicodeToShortcode(char) {
* @param {String} shortcode The shortcode (such as :thumbup:)
* @return {String} The emoji character; null if none exists
*/
export function shortcodeToUnicode(shortcode) {
export function shortcodeToUnicode(shortcode: string) {
shortcode = shortcode.slice(1, shortcode.length - 1);
const data = SHORTCODE_TO_EMOJI.get(shortcode);
return data ? data.unicode : null;
@ -100,7 +97,7 @@ export function processHtmlForSending(html: string): string {
}
let contentHTML = "";
for (let i=0; i < contentDiv.children.length; i++) {
for (let i = 0; i < contentDiv.children.length; i++) {
const element = contentDiv.children[i];
if (element.tagName.toLowerCase() === 'p') {
contentHTML += element.innerHTML;
@ -122,12 +119,19 @@ export function processHtmlForSending(html: string): string {
* Given an untrusted HTML string, return a React node with an sanitized version
* of that HTML.
*/
export function sanitizedHtmlNode(insaneHtml) {
export function sanitizedHtmlNode(insaneHtml: string) {
const saneHtml = sanitizeHtml(insaneHtml, sanitizeHtmlParams);
return <div dangerouslySetInnerHTML={{ __html: saneHtml }} dir="auto" />;
}
export function sanitizedHtmlNodeInnerText(insaneHtml: string) {
const saneHtml = sanitizeHtml(insaneHtml, sanitizeHtmlParams);
const contentDiv = document.createElement("div");
contentDiv.innerHTML = saneHtml;
return contentDiv.innerText;
}
/**
* Tests if a URL from an untrusted source may be safely put into the DOM
* The biggest threat here is javascript: URIs.
@ -136,7 +140,7 @@ export function sanitizedHtmlNode(insaneHtml) {
* other places we need to sanitise URLs.
* @return true if permitted, otherwise false
*/
export function isUrlPermitted(inputUrl) {
export function isUrlPermitted(inputUrl: string) {
try {
const parsed = url.parse(inputUrl);
if (!parsed.protocol) return false;
@ -147,9 +151,9 @@ export function isUrlPermitted(inputUrl) {
}
}
const transformTags = { // custom to matrix
const transformTags: sanitizeHtml.IOptions["transformTags"] = { // custom to matrix
// add blank targets to all hyperlinks except vector URLs
'a': function(tagName, attribs) {
'a': function(tagName: string, attribs: sanitizeHtml.Attributes) {
if (attribs.href) {
attribs.target = '_blank'; // by default
@ -162,7 +166,7 @@ const transformTags = { // custom to matrix
attribs.rel = 'noreferrer noopener'; // https://mathiasbynens.github.io/rel-noopener/
return { tagName, attribs };
},
'img': function(tagName, attribs) {
'img': function(tagName: string, attribs: sanitizeHtml.Attributes) {
// Strip out imgs that aren't `mxc` here instead of using allowedSchemesByTag
// because transformTags is used _before_ we filter by allowedSchemesByTag and
// we don't want to allow images with `https?` `src`s.
@ -176,7 +180,7 @@ const transformTags = { // custom to matrix
);
return { tagName, attribs };
},
'code': function(tagName, attribs) {
'code': function(tagName: string, attribs: sanitizeHtml.Attributes) {
if (typeof attribs.class !== 'undefined') {
// Filter out all classes other than ones starting with language- for syntax highlighting.
const classes = attribs.class.split(/\s/).filter(function(cl) {
@ -186,7 +190,7 @@ const transformTags = { // custom to matrix
}
return { tagName, attribs };
},
'*': function(tagName, attribs) {
'*': function(tagName: string, attribs: sanitizeHtml.Attributes) {
// Delete any style previously assigned, style is an allowedTag for font and span
// because attributes are stripped after transforming
delete attribs.style;
@ -220,7 +224,7 @@ const transformTags = { // custom to matrix
},
};
const sanitizeHtmlParams = {
const sanitizeHtmlParams: sanitizeHtml.IOptions = {
allowedTags: [
'font', // custom to matrix for IRC-style font coloring
'del', // for markdown
@ -247,16 +251,16 @@ const sanitizeHtmlParams = {
};
// this is the same as the above except with less rewriting
const composerSanitizeHtmlParams = Object.assign({}, sanitizeHtmlParams);
composerSanitizeHtmlParams.transformTags = {
'code': transformTags['code'],
'*': transformTags['*'],
const composerSanitizeHtmlParams: sanitizeHtml.IOptions = {
...sanitizeHtmlParams,
transformTags: {
'code': transformTags['code'],
'*': transformTags['*'],
},
};
class BaseHighlighter {
constructor(highlightClass, highlightLink) {
this.highlightClass = highlightClass;
this.highlightLink = highlightLink;
abstract class BaseHighlighter<T extends React.ReactNode> {
constructor(public highlightClass: string, public highlightLink: string) {
}
/**
@ -270,47 +274,49 @@ class BaseHighlighter {
* returns a list of results (strings for HtmlHighligher, react nodes for
* TextHighlighter).
*/
applyHighlights(safeSnippet, safeHighlights) {
public applyHighlights(safeSnippet: string, safeHighlights: string[]): T[] {
let lastOffset = 0;
let offset;
let nodes = [];
let nodes: T[] = [];
const safeHighlight = safeHighlights[0];
while ((offset = safeSnippet.toLowerCase().indexOf(safeHighlight.toLowerCase(), lastOffset)) >= 0) {
// handle preamble
if (offset > lastOffset) {
var subSnippet = safeSnippet.substring(lastOffset, offset);
nodes = nodes.concat(this._applySubHighlights(subSnippet, safeHighlights));
const subSnippet = safeSnippet.substring(lastOffset, offset);
nodes = nodes.concat(this.applySubHighlights(subSnippet, safeHighlights));
}
// do highlight. use the original string rather than safeHighlight
// to preserve the original casing.
const endOffset = offset + safeHighlight.length;
nodes.push(this._processSnippet(safeSnippet.substring(offset, endOffset), true));
nodes.push(this.processSnippet(safeSnippet.substring(offset, endOffset), true));
lastOffset = endOffset;
}
// handle postamble
if (lastOffset !== safeSnippet.length) {
subSnippet = safeSnippet.substring(lastOffset, undefined);
nodes = nodes.concat(this._applySubHighlights(subSnippet, safeHighlights));
const subSnippet = safeSnippet.substring(lastOffset, undefined);
nodes = nodes.concat(this.applySubHighlights(subSnippet, safeHighlights));
}
return nodes;
}
_applySubHighlights(safeSnippet, safeHighlights) {
private applySubHighlights(safeSnippet: string, safeHighlights: string[]): T[] {
if (safeHighlights[1]) {
// recurse into this range to check for the next set of highlight matches
return this.applyHighlights(safeSnippet, safeHighlights.slice(1));
} else {
// no more highlights to be found, just return the unhighlighted string
return [this._processSnippet(safeSnippet, false)];
return [this.processSnippet(safeSnippet, false)];
}
}
protected abstract processSnippet(snippet: string, highlight: boolean): T;
}
class HtmlHighlighter extends BaseHighlighter {
class HtmlHighlighter extends BaseHighlighter<string> {
/* highlight the given snippet if required
*
* snippet: content of the span; must have been sanitised
@ -318,28 +324,23 @@ class HtmlHighlighter extends BaseHighlighter {
*
* returns an HTML string
*/
_processSnippet(snippet, highlight) {
protected processSnippet(snippet: string, highlight: boolean): string {
if (!highlight) {
// nothing required here
return snippet;
}
let span = "<span class=\""+this.highlightClass+"\">"
+ snippet + "</span>";
let span = `<span class="${this.highlightClass}">${snippet}</span>`;
if (this.highlightLink) {
span = "<a href=\""+encodeURI(this.highlightLink)+"\">"
+span+"</a>";
span = `<a href="${encodeURI(this.highlightLink)}">${span}</a>`;
}
return span;
}
}
class TextHighlighter extends BaseHighlighter {
constructor(highlightClass, highlightLink) {
super(highlightClass, highlightLink);
this._key = 0;
}
class TextHighlighter extends BaseHighlighter<React.ReactNode> {
private key = 0;
/* create a <span> node to hold the given content
*
@ -348,13 +349,12 @@ class TextHighlighter extends BaseHighlighter {
*
* returns a React node
*/
_processSnippet(snippet, highlight) {
const key = this._key++;
protected processSnippet(snippet: string, highlight: boolean): React.ReactNode {
const key = this.key++;
let node =
<span key={key} className={highlight ? this.highlightClass : null}>
{ snippet }
</span>;
let node = <span key={key} className={highlight ? this.highlightClass : null}>
{ snippet }
</span>;
if (highlight && this.highlightLink) {
node = <a key={key} href={this.highlightLink}>{ node }</a>;
@ -364,6 +364,20 @@ class TextHighlighter extends BaseHighlighter {
}
}
interface IContent {
format?: string;
formatted_body?: string;
body: string;
}
interface IOpts {
highlightLink?: string;
disableBigEmoji?: boolean;
stripReplyFallback?: boolean;
returnString?: boolean;
forComposerQuote?: boolean;
ref?: React.Ref<any>;
}
/* turn a matrix event body into html
*
@ -378,7 +392,7 @@ class TextHighlighter extends BaseHighlighter {
* opts.forComposerQuote: optional param to lessen the url rewriting done by sanitization, for quoting into composer
* opts.ref: React ref to attach to any React components returned (not compatible with opts.returnString)
*/
export function bodyToHtml(content, highlights, opts={}) {
export function bodyToHtml(content: IContent, highlights: string[], opts: IOpts = {}) {
const isHtmlMessage = content.format === "org.matrix.custom.html" && content.formatted_body;
let bodyHasEmoji = false;
@ -387,9 +401,9 @@ export function bodyToHtml(content, highlights, opts={}) {
sanitizeParams = composerSanitizeHtmlParams;
}
let strippedBody;
let safeBody;
let isDisplayedWithHtml;
let strippedBody: string;
let safeBody: string;
let isDisplayedWithHtml: boolean;
// XXX: We sanitize the HTML whilst also highlighting its text nodes, to avoid accidentally trying
// to highlight HTML tags themselves. However, this does mean that we don't highlight textnodes which
// are interrupted by HTML tags (not that we did before) - e.g. foo<span/>bar won't get highlighted
@ -471,7 +485,7 @@ export function bodyToHtml(content, highlights, opts={}) {
* @param {object} [options] Options for linkifyString. Default: linkifyMatrix.options
* @returns {string} Linkified string
*/
export function linkifyString(str, options = linkifyMatrix.options) {
export function linkifyString(str: string, options = linkifyMatrix.options) {
return _linkifyString(str, options);
}
@ -482,7 +496,7 @@ export function linkifyString(str, options = linkifyMatrix.options) {
* @param {object} [options] Options for linkifyElement. Default: linkifyMatrix.options
* @returns {object}
*/
export function linkifyElement(element, options = linkifyMatrix.options) {
export function linkifyElement(element: HTMLElement, options = linkifyMatrix.options) {
return _linkifyElement(element, options);
}
@ -493,7 +507,7 @@ export function linkifyElement(element, options = linkifyMatrix.options) {
* @param {object} [options] Options for linkifyString. Default: linkifyMatrix.options
* @returns {string}
*/
export function linkifyAndSanitizeHtml(dirtyHtml, options = linkifyMatrix.options) {
export function linkifyAndSanitizeHtml(dirtyHtml: string, options = linkifyMatrix.options) {
return sanitizeHtml(linkifyString(dirtyHtml, options), sanitizeHtmlParams);
}
@ -504,7 +518,7 @@ export function linkifyAndSanitizeHtml(dirtyHtml, options = linkifyMatrix.option
* @param {Node} node
* @returns {bool}
*/
export function checkBlockNode(node) {
export function checkBlockNode(node: Node) {
switch (node.nodeName) {
case "H1":
case "H2":

16
src/stores/room-list/previews/MessageEventPreview.ts
View file

@ -20,6 +20,7 @@ import { MatrixEvent } from "matrix-js-sdk/src/models/event";
import { _t } from "../../../languageHandler";
import { getSenderName, isSelf, shouldPrefixMessagesIn } from "./utils";
import ReplyThread from "../../../components/views/elements/ReplyThread";
import { sanitizedHtmlNodeInnerText } from "../../../HtmlUtils";
export class MessageEventPreview implements IPreview {
public getTextFor(event: MatrixEvent, tagId?: TagID): string {
@ -36,14 +37,27 @@ export class MessageEventPreview implements IPreview {
const msgtype = eventContent['msgtype'];
if (!body || !msgtype) return null; // invalid event, no preview
const hasHtml = eventContent.format === "org.matrix.custom.html" && eventContent.formatted_body;
if (hasHtml) {
body = eventContent.formatted_body;
}
// XXX: Newer relations have a getRelation() function which is not compatible with replies.
const mRelatesTo = event.getWireContent()['m.relates_to'];
if (mRelatesTo && mRelatesTo['m.in_reply_to']) {
// If this is a reply, get the real reply and use that
body = (ReplyThread.stripPlainReply(body) || '').trim();
if (hasHtml) {
body = (ReplyThread.stripHTMLReply(body) || '').trim();
} else {
body = (ReplyThread.stripPlainReply(body) || '').trim();
}
if (!body) return null; // invalid event, no preview
}
if (hasHtml) {
body = sanitizedHtmlNodeInnerText(body);
}
if (msgtype === 'm.emote') {
return _t("%(senderName)s %(emote)s", {senderName: getSenderName(event), emote: body});
}

14
yarn.lock
View file

@ -1308,6 +1308,13 @@
resolved "https://registry.yarnpkg.com/@types/json-schema/-/json-schema-7.0.4.tgz#38fd73ddfd9b55abb1e1b2ed578cb55bd7b7d339"
integrity sha512-8+KAKzEvSUdeo+kmqnKrqgeE+LcA0tjYWFY7RPProVYwnqDjukzO+3b6dLD56rYX5TdWejnEOLJYOIeh4CXKuA==
"@types/linkifyjs@^2.1.3":
version "2.1.3"
resolved "https://registry.yarnpkg.com/@types/linkifyjs/-/linkifyjs-2.1.3.tgz#80195c3c88c5e75d9f660e3046ce4a42be2c2fa4"
integrity sha512-V3Xt9wgaOvDPXcpOy3dC8qXCxy3cs0Lr/Hqgd9Bi6m3sf/vpbpTtfmVR0LJklrqYEjaAmc7e3Xh/INT2rCAKjQ==
dependencies:
"@types/react" "*"
"@types/lodash@^4.14.152":
version "4.14.155"
resolved "https://registry.yarnpkg.com/@types/lodash/-/lodash-4.14.155.tgz#e2b4514f46a261fd11542e47519c20ebce7bc23a"
@ -1372,6 +1379,13 @@
"@types/prop-types" "*"
csstype "^2.2.0"
"@types/sanitize-html@^1.23.3":
version "1.23.3"
resolved "https://registry.yarnpkg.com/@types/sanitize-html/-/sanitize-html-1.23.3.tgz#26527783aba3bf195ad8a3c3e51bd3713526fc0d"
integrity sha512-Isg8N0ifKdDq6/kaNlIcWfapDXxxquMSk2XC5THsOICRyOIhQGds95XH75/PL/g9mExi4bL8otIqJM/Wo96WxA==
dependencies:
htmlparser2 "^4.1.0"
"@types/stack-utils@^1.0.1":
version "1.0.1"
resolved "https://registry.yarnpkg.com/@types/stack-utils/-/stack-utils-1.0.1.tgz#0a851d3bd96498fa25c33ab7278ed3bd65f06c3e"