rewrite the HTML message stuff to fix XSS and improve clarity
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parent
ffb9ce89c7
commit
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2 changed files with 47 additions and 40 deletions
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@ -35,43 +35,46 @@ module.exports = React.createClass({
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// FIXME: this entire class is copy-pasted from MTextTile :(
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// FIXME: this entire class is copy-pasted from MTextTile :(
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render: function() {
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render: function() {
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var content = this.props.mxEvent.getContent();
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var content = this.props.mxEvent.getContent();
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var body = content.body;
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var originalBody = content.body;
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if (content.format === "org.matrix.custom.html") {
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body = sanitizeHtml(content.formatted_body, sanitizeHtmlParams);
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}
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if (this.props.searchTerm) {
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if (this.props.searchTerm) {
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var lastOffset = 0;
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var lastOffset = 0;
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var bodyList = [];
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var bodyList = [];
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var k = 0;
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var k = 0;
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var offset;
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var offset;
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// XXX: this probably doesn't handle stemming very well.
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while ((offset = body.indexOf(this.props.searchTerm, lastOffset)) >= 0) {
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// XXX: rather than searching for the search term in the body,
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if (content.format === "org.matrix.custom.html") {
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// we should be looking at the match delimiters returned by the FTS engine
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if (content.format === "org.matrix.custom.html") {
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var safeBody = sanitizeHtml(content.formatted_body, sanitizeHtmlParams);
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var safeSearchTerm = sanitizeHtml(this.props.searchTerm, sanitizeHtmlParams);
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while ((offset = safeBody.indexOf(safeSearchTerm, lastOffset)) >= 0) {
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// FIXME: we need to apply the search highlighting to only the text elements of HTML, which means
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// FIXME: we need to apply the search highlighting to only the text elements of HTML, which means
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// hooking into the sanitizer parser rather than treating it as a string. Otherwise
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// hooking into the sanitizer parser rather than treating it as a string. Otherwise
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// the act of highlighting a <b/> or whatever will break the HTML badly.
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// the act of highlighting a <b/> or whatever will break the HTML badly.
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bodyList.push(<span key={ k++ } dangerouslySetInnerHTML={{ __html: body.substring(lastOffset, offset) }} />);
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bodyList.push(<span key={ k++ } dangerouslySetInnerHTML={{ __html: safeBody.substring(lastOffset, offset) }} />);
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bodyList.push(<span key={ k++ } dangerouslySetInnerHTML={{ __html: this.props.searchTerm }} className="mx_MessageTile_searchHighlight" />);
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bodyList.push(<span key={ k++ } dangerouslySetInnerHTML={{ __html: safeSearchTerm }} className="mx_MessageTile_searchHighlight" />);
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lastOffset = offset + safeSearchTerm.length;
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}
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}
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else {
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bodyList.push(<span key={ k++ } dangerouslySetInnerHTML={{ __html: safeBody.substring(lastOffset) }} />);
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bodyList.push(<span key={ k++ } >{ body.substring(lastOffset, offset) }</span>);
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bodyList.push(<span key={ k++ } className="mx_MessageTile_searchHighlight">{ this.props.searchTerm }</span>);
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}
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lastOffset = offset + this.props.searchTerm.length;
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}
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if (content.format === "org.matrix.custom.html") {
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bodyList.push(<span key={ k++ } dangerouslySetInnerHTML={{ __html: body.substring(lastOffset) }} />);
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}
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}
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else {
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else {
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bodyList.push(<span key={ k++ }>{ body.substring(lastOffset) }</span>);
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while ((offset = originalBody.indexOf(this.props.searchTerm, lastOffset)) >= 0) {
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bodyList.push(<span key={ k++ } >{ originalBody.substring(lastOffset, offset) }</span>);
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bodyList.push(<span key={ k++ } className="mx_MessageTile_searchHighlight">{ this.props.searchTerm }</span>);
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lastOffset = offset + this.props.searchTerm.length;
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}
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bodyList.push(<span key={ k++ }>{ originalBody.substring(lastOffset) }</span>);
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}
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}
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body = bodyList;
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body = bodyList;
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}
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}
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else {
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else {
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if (content.format === "org.matrix.custom.html") {
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if (content.format === "org.matrix.custom.html") {
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body = <span dangerouslySetInnerHTML={{ __html: body }} />;
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var safeBody = sanitizeHtml(content.formatted_body, sanitizeHtmlParams);
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body = <span dangerouslySetInnerHTML={{ __html: safeBody }} />;
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}
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else {
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body = originalBody;
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}
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}
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}
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}
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@ -32,45 +32,49 @@ module.exports = React.createClass({
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displayName: 'MTextTile',
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displayName: 'MTextTile',
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mixins: [MTextTileController],
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mixins: [MTextTileController],
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// FIXME: this entire class is copy-pasted from MTextTile :(
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render: function() {
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render: function() {
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var content = this.props.mxEvent.getContent();
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var content = this.props.mxEvent.getContent();
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var body = content.body;
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var originalBody = content.body;
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if (content.format === "org.matrix.custom.html") {
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body = sanitizeHtml(content.formatted_body, sanitizeHtmlParams);
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}
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if (this.props.searchTerm) {
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if (this.props.searchTerm) {
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var lastOffset = 0;
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var lastOffset = 0;
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var bodyList = [];
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var bodyList = [];
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var k = 0;
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var k = 0;
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var offset;
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var offset;
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// XXX: this probably doesn't handle stemming very well.
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while ((offset = body.indexOf(this.props.searchTerm, lastOffset)) >= 0) {
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// XXX: rather than searching for the search term in the body,
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if (content.format === "org.matrix.custom.html") {
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// we should be looking at the match delimiters returned by the FTS engine
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if (content.format === "org.matrix.custom.html") {
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var safeBody = sanitizeHtml(content.formatted_body, sanitizeHtmlParams);
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var safeSearchTerm = sanitizeHtml(this.props.searchTerm, sanitizeHtmlParams);
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while ((offset = safeBody.indexOf(safeSearchTerm, lastOffset)) >= 0) {
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// FIXME: we need to apply the search highlighting to only the text elements of HTML, which means
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// FIXME: we need to apply the search highlighting to only the text elements of HTML, which means
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// hooking into the sanitizer parser rather than treating it as a string. Otherwise
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// hooking into the sanitizer parser rather than treating it as a string. Otherwise
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// the act of highlighting a <b/> or whatever will break the HTML badly.
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// the act of highlighting a <b/> or whatever will break the HTML badly.
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bodyList.push(<span key={ k++ } dangerouslySetInnerHTML={{ __html: body.substring(lastOffset, offset) }} />);
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bodyList.push(<span key={ k++ } dangerouslySetInnerHTML={{ __html: safeBody.substring(lastOffset, offset) }} />);
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bodyList.push(<span key={ k++ } dangerouslySetInnerHTML={{ __html: this.props.searchTerm }} className="mx_MessageTile_searchHighlight" />);
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bodyList.push(<span key={ k++ } dangerouslySetInnerHTML={{ __html: safeSearchTerm }} className="mx_MessageTile_searchHighlight" />);
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lastOffset = offset + safeSearchTerm.length;
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}
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}
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else {
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bodyList.push(<span key={ k++ } dangerouslySetInnerHTML={{ __html: safeBody.substring(lastOffset) }} />);
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bodyList.push(<span key={ k++ } >{ body.substring(lastOffset, offset) }</span>);
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bodyList.push(<span key={ k++ } className="mx_MessageTile_searchHighlight">{ this.props.searchTerm }</span>);
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}
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lastOffset = offset + this.props.searchTerm.length;
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}
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if (content.format === "org.matrix.custom.html") {
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bodyList.push(<span key={ k++ } dangerouslySetInnerHTML={{ __html: body.substring(lastOffset) }} />);
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}
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}
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else {
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else {
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bodyList.push(<span key={ k++ }>{ body.substring(lastOffset) }</span>);
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while ((offset = originalBody.indexOf(this.props.searchTerm, lastOffset)) >= 0) {
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bodyList.push(<span key={ k++ } >{ originalBody.substring(lastOffset, offset) }</span>);
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bodyList.push(<span key={ k++ } className="mx_MessageTile_searchHighlight">{ this.props.searchTerm }</span>);
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lastOffset = offset + this.props.searchTerm.length;
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}
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bodyList.push(<span key={ k++ }>{ originalBody.substring(lastOffset) }</span>);
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}
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}
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body = bodyList;
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body = bodyList;
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}
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}
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else {
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else {
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if (content.format === "org.matrix.custom.html") {
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if (content.format === "org.matrix.custom.html") {
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body = <span dangerouslySetInnerHTML={{ __html: body }} />;
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var safeBody = sanitizeHtml(content.formatted_body, sanitizeHtmlParams);
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body = <span dangerouslySetInnerHTML={{ __html: safeBody }} />;
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}
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else {
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body = originalBody;
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}
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}
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}
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}
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