forked from mirrors/gecko-dev
269a6fbae9
The urls where an OpenSearch engine can be loaded from are already limited in LinkHandlerChild. This is cleaning up and simplifying what the OpenSearchEngine allows, and as a result allows the load path handling to be greatly simplified. The test changes are due to no longer allowing chrome or file protocols. For future, we probably want to move away from OpenSearch for most of these, but the changes will make it easier to find the places to update. Differential Revision: https://phabricator.services.mozilla.com/D104010
182 lines
4.7 KiB
JavaScript
182 lines
4.7 KiB
JavaScript
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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"use strict";
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const EXPORTED_SYMBOLS = ["LinkHandlerChild"];
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const { Services } = ChromeUtils.import("resource://gre/modules/Services.jsm");
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ChromeUtils.defineModuleGetter(
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this,
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"FaviconLoader",
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"resource:///modules/FaviconLoader.jsm"
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);
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class LinkHandlerChild extends JSWindowActorChild {
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constructor() {
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super();
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this.seenTabIcon = false;
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this._iconLoader = null;
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}
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get iconLoader() {
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if (!this._iconLoader) {
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this._iconLoader = new FaviconLoader(this);
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}
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return this._iconLoader;
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}
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addRootIcon() {
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if (
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!this.seenTabIcon &&
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Services.prefs.getBoolPref("browser.chrome.guess_favicon", true) &&
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Services.prefs.getBoolPref("browser.chrome.site_icons", true)
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) {
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// Inject the default icon. Use documentURIObject so that we do the right
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// thing with about:-style error pages. See bug 453442
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let pageURI = this.document.documentURIObject;
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if (["http", "https"].includes(pageURI.scheme)) {
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this.seenTabIcon = true;
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this.iconLoader.addDefaultIcon(pageURI);
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}
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}
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}
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onHeadParsed(event) {
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if (event.target.ownerDocument != this.document) {
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return;
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}
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// Per spec icons are meant to be in the <head> tag so we should have seen
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// all the icons now so add the root icon if no other tab icons have been
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// seen.
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this.addRootIcon();
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// We're likely done with icon parsing so load the pending icons now.
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if (this._iconLoader) {
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this._iconLoader.onPageShow();
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}
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}
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onPageShow(event) {
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if (event.target != this.document) {
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return;
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}
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this.addRootIcon();
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if (this._iconLoader) {
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this._iconLoader.onPageShow();
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}
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}
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onPageHide(event) {
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if (event.target != this.document) {
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return;
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}
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if (this._iconLoader) {
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this._iconLoader.onPageHide();
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}
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this.seenTabIcon = false;
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}
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onLinkEvent(event) {
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let link = event.target;
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// Ignore sub-frames (bugs 305472, 479408).
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if (link.ownerGlobal != this.contentWindow) {
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return;
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}
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let rel = link.rel && link.rel.toLowerCase();
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// We also check .getAttribute, since an empty href attribute will give us
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// a link.href that is the same as the document.
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if (!rel || !link.href || !link.getAttribute("href")) {
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return;
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}
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// Note: following booleans only work for the current link, not for the
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// whole content
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let iconAdded = false;
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let searchAdded = false;
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let rels = {};
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for (let relString of rel.split(/\s+/)) {
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rels[relString] = true;
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}
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for (let relVal in rels) {
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let isRichIcon = false;
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switch (relVal) {
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case "apple-touch-icon":
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case "apple-touch-icon-precomposed":
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case "fluid-icon":
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isRichIcon = true;
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// fall through
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case "icon":
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if (iconAdded || link.hasAttribute("mask")) {
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// Masked icons are not supported yet.
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break;
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}
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if (!Services.prefs.getBoolPref("browser.chrome.site_icons", true)) {
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return;
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}
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if (this.iconLoader.addIconFromLink(link, isRichIcon)) {
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iconAdded = true;
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if (!isRichIcon) {
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this.seenTabIcon = true;
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}
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}
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break;
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case "search":
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if (
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Services.policies &&
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!Services.policies.isAllowed("installSearchEngine")
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) {
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break;
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}
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if (!searchAdded && event.type == "DOMLinkAdded") {
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let type = link.type && link.type.toLowerCase();
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type = type.replace(/^\s+|\s*(?:;.*)?$/g, "");
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// Note: This protocol list should be kept in sync with
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// the one in OpenSearchEngine's install function.
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let re = /^(?:https?|ftp):/i;
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if (
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type == "application/opensearchdescription+xml" &&
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link.title &&
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re.test(link.href)
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) {
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let engine = { title: link.title, href: link.href };
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this.sendAsyncMessage("Link:AddSearch", {
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engine,
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url: link.ownerDocument.documentURI,
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});
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searchAdded = true;
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}
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}
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break;
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}
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}
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}
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handleEvent(event) {
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switch (event.type) {
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case "pageshow":
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return this.onPageShow(event);
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case "pagehide":
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return this.onPageHide(event);
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case "DOMHeadElementParsed":
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return this.onHeadParsed(event);
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default:
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return this.onLinkEvent(event);
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}
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}
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}
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