bc4890d4d4
restoretab.js was added in https://github.com/mozilla/pdf.js/pull/6233 with the purpose of restoring lost tabs when Chrome closes all extension tabs when it reloads the extension. This forced reload can happen when the user toggles the "Allow access to file URLs" option. This logic does not work any more, and since the use of localStorage is a blocker in migrating to MV3, this patch just drops the logic.
104 lines
3.2 KiB
JavaScript
104 lines
3.2 KiB
JavaScript
/*
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Copyright 2013 Mozilla Foundation
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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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"use strict";
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(function ExtensionRouterClosure() {
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var VIEWER_URL = chrome.runtime.getURL("content/web/viewer.html");
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var CRX_BASE_URL = chrome.runtime.getURL("/");
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var schemes = [
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"http",
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"https",
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"file",
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"chrome-extension",
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"blob",
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"data",
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// Chromium OS
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"filesystem",
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// Chromium OS, shorthand for filesystem:<origin>/external/
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"drive",
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];
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/**
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* @param {string} url The URL prefixed with chrome-extension://.../
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* @returns {string|undefined} The percent-encoded URL of the (PDF) file.
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*/
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function parseExtensionURL(url) {
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url = url.substring(CRX_BASE_URL.length);
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// Find the (url-encoded) colon and verify that the scheme is allowed.
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var schemeIndex = url.search(/:|%3A/i);
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if (schemeIndex === -1) {
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return undefined;
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}
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var scheme = url.slice(0, schemeIndex).toLowerCase();
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if (schemes.includes(scheme)) {
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url = url.split("#", 1)[0];
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if (url.charAt(schemeIndex) === ":") {
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url = encodeURIComponent(url);
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}
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return url;
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}
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return undefined;
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}
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// TODO(rob): Use declarativeWebRequest once declared URL-encoding is
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// supported, see http://crbug.com/273589
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// (or rewrite the query string parser in viewer.js to get it to
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// recognize the non-URL-encoded PDF URL.)
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chrome.webRequest.onBeforeRequest.addListener(
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function (details) {
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// This listener converts chrome-extension://.../http://...pdf to
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// chrome-extension://.../content/web/viewer.html?file=http%3A%2F%2F...pdf
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var url = parseExtensionURL(details.url);
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if (url) {
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url = VIEWER_URL + "?file=" + url;
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var i = details.url.indexOf("#");
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if (i > 0) {
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url += details.url.slice(i);
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}
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console.log("Redirecting " + details.url + " to " + url);
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return { redirectUrl: url };
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}
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return undefined;
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},
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{
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types: ["main_frame", "sub_frame"],
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urls: schemes.map(function (scheme) {
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// Format: "chrome-extension://[EXTENSIONID]/<scheme>*"
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return CRX_BASE_URL + scheme + "*";
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}),
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},
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["blocking"]
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);
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// When session restore is used, viewer pages may be loaded before the
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// webRequest event listener is attached (= page not found).
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// Or the extension could have been crashed (OOM), leaving a sad tab behind.
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// Reload these tabs.
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chrome.tabs.query(
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{
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url: CRX_BASE_URL + "*:*",
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},
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function (tabsFromLastSession) {
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for (const { id } of tabsFromLastSession) {
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chrome.tabs.reload(id);
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}
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}
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);
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console.log("Set up extension URL router.");
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})();
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