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diff --git a/data/extensions/jsr@javascriptrestrictor/nscl/service/DocStartInjection.js b/data/extensions/jsr@javascriptrestrictor/nscl/service/DocStartInjection.js
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--- a/data/extensions/jsr@javascriptrestrictor/nscl/service/DocStartInjection.js
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@@ -1,287 +0,0 @@
-/*
- * NoScript Commons Library
- * Reusable building blocks for cross-browser security/privacy WebExtensions.
- * Copyright (C) 2020-2024 Giorgio Maone <https://maone.net>
- *
- * SPDX-License-Identifier: GPL-3.0-or-later
- *
- * This program is free software: you can redistribute it and/or modify it under
- * the terms of the GNU General Public License as published by the Free Software
- * Foundation, either version 3 of the License, or (at your option) any later
- * version.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
- * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program. If not, see <https://www.gnu.org/licenses/>.
- */
-
-// depends on /nscl/common/sha256.js
-// depends on /nscl/common/uuid.js
-
-"use strict";
-
-var DocStartInjection = (() => {
- const MSG_ID = "__DocStartInjection__";
- const repeating = !("contentScripts" in browser);
- const mv3Callbacks = repeating && !browser.tabs.executeScript; // mv3 on Chrome
-
- let scriptBuilders = new Set();
- let getId = ({requestId, tabId, frameId, url}) => requestId || `${tabId}:${frameId}:${url}`;
- let pending = new Map();
-
- function onMessage(msg, sender) {
- let payload = msg[MSG_ID];
- if (!payload) return;
- let {id, tabId, frameId, url} = payload;
- let ret = false;
- if (tabId === sender.tab.id && frameId === sender.frameId && url === sender.url) {
- end(payload, true);
- ret = true;
- }
- return Promise.resolve(ret);
- }
-
- async function begin(request) {
- let scripts = new Set();
- let {tabId, frameId, url} = request;
- if (tabId < 0 || !/^(?:(?:https?|ftp|data|blob|file):|about:blank$)/.test(url)) return;
-
- await Promise.allSettled([...scriptBuilders].map(async buildScript => {
- let script;
- try {
- script = await buildScript({tabId, frameId, url});
- if (!script) return;
- if (mv3Callbacks) {
- if (typeof script !== "object") {
- throw new Error('On MV3 only {data: jsonObject, callback: "globalFunctionName", assign: "globalScopeVarName"} injection can work!')
- }
- const {data, callback, assign} = script;
- scripts.add({
- data,
- callback,
- assign,
- });
- return;
- }
- // mv2
- scripts.add(`try {
- ${typeof script === "function" ? `(${script})();` : script}
- } catch (e) {
- console.error("Error in DocStartInjection script", e);
- }`
- );
- } catch (e) {
- error(`Error calling DocStartInjection scriptBuilder: buildScript ${buildScript} - script: ${script}`, e);
- }
- }));
-
- if (scripts.size === 0) {
- debug(`DocStartInjection: no script to inject in ${url}`);
- return;
- }
-
- let id = getId(request);
-
- if (repeating) {
- let injectionId = `injection:${uuid()}:${await sha256(Math.random().toString(16))}`;
- let args = mv3Callbacks ?
- // mv3 browser.scripting.executeScript()
- {
- func: (url, injectionId, scripts) => {
- if (document.readyState === "complete" ||
- window[injectionId] ||
- document.URL !== url
- ) return window[injectionId];
- window[injectionId] = true;
- for (s of scripts) {
- const {callback, assign, data} = s;
- try {
- if (assign && !(assign in globalThis)) {
- globalThis[assign] = data;
- }
- if (callback) {
- let cb = globalThis[callback];
- if (typeof cb == "function") {
- cb.call(globalThis, data);
- } else {
- console.warn(`callback globalThis.${callback} is not a function (${cb}).`);
- }
- }
- } catch (e) {
- console.error(`Error in DocStartInjection script ${JSON.stringify(s)}`, e);
- }
- }
- return document.readyState === "loading";
- },
- args: [url, injectionId, [...scripts]],
- target: {tabId, frameIds: [frameId]},
- injectImmediately: true,
- } :
- // mv2 browser.tabs.executeScript()
- {
- code: `(() => {
- let injectionId = ${JSON.stringify(injectionId)};
- if (document.readyState === "complete" ||
- window[injectionId] ||
- document.URL !== ${JSON.stringify(url)}
- ) return window[injectionId];
- window[injectionId] = true;
- ${[...scripts].join("\n")}
- return document.readyState === "loading";
- })();`,
- runAt: "document_start",
- frameId,
- };
- pending.set(id, args);
- await run(request, true);
- } else {
- let matches = [url];
- try {
- let urlObj = new URL(url);
- if (urlObj.port) {
- urlObj.port = "";
- matches[0] = urlObj.toString();
- }
- } catch (e) {}
-
- let ackMsg = JSON.stringify({
- [MSG_ID]: {id, tabId, frameId, url}
- });
- scripts.add(`if (document.readyState !== "complete") browser.runtime.sendMessage(${ackMsg});`);
-
- let options = {
- js: [...scripts].map(code => ({code})),
- runAt: "document_start",
- matchAboutBlank: true,
- matches,
- allFrames: true,
- };
- let current = pending.get(id);
- if (current) {
- current.unregister();
- }
- pending.set(id, await browser.contentScripts.register(options));
- }
- }
-
- async function run(request, repeat = false) {
- const id = getId(request);
- const args = pending.get(id);
- if (!args) return;
- let {url, tabId} = request;
- let attempts = 0;
- let success = false;
- const execute = mv3Callbacks ?
- async () => {
- const ret = await browser.scripting.executeScript(args);
- return ret[0].result;
- }
- : async() => {
- const ret = await browser.tabs.executeScript(tabId, args);
- return ret[0];
- };
- for (; pending.has(id);) {
- attempts++;
- try {
- if (attempts % 1000 === 0) {
- let tab = await browser.tabs.get(request.tabId);
- if (tab.url !== url) {
- console.error(`Tab mismatch: ${tab.url} <> ${url} (download-triggered?)`);
- break;
- }
- console.error(`DocStartInjection at ${url} ${attempts} failed attempts so far...`);
- }
- if (execute()) {
- success = true;
- break;
- }
- } catch (e) {
- if (/No tab\b/.test(e.message)) {
- break;
- }
- if (!/\baccess\b/.test(e.message)) {
- console.error(e.message);
- }
- if (!browser.tabs.executeScript) {
- console.error(`MV3 fatality, cannot script tab ${tabId}! ${JSON.stringify(args)}`);
- break;
- }
- if (attempts % 1000 === 0) {
- console.error(`DocStartInjection at ${url} ${attempts} failed attempts`, e);
- }
- } finally {
- if (!repeat) break;
- }
- }
- pending.delete(id);
- debug(`DocStartInjection at ${url}, ${attempts} attempts, success = ${success}, repeat = ${repeat}.`);
- }
-
- function end(request, immediate = false) {
- let id = getId(request);
- let script = pending.get(id);
- if (script) {
- if (repeating) {
- run(request, false);
- } else {
- pending.delete(id);
- if (immediate) {
- script.unregister();
- } else {
- setTimeout(() => script.unregister(), 500);
- }
- }
- }
- }
-
- let listeners = {
- onBeforeNavigate: begin,
- onErrorOccurred: end,
- onCompleted: end,
- }
-
- function listen(enabled) {
- let {webNavigation, webRequest} = browser;
- let method = `${enabled ? "add" : "remove"}Listener`;
- let reqFilter = {urls: ["<all_urls>"], types: ["main_frame", "sub_frame", "object"]};
- function setup(api, eventName, listener, ...args) {
- let event = api[eventName];
- if (event) {
- event[method].apply(event, enabled ? [listener, ...args] : [listener]);
- }
- }
- if (repeating) {
- // Just Chromium
- setup(webRequest, "onResponseStarted", begin, reqFilter);
- } else {
- // add or remove Firefox's webNavigation listeners for non-http loads
- // and asynchronous blocking onHeadersReceived for registration on http
- let navFilter = enabled && {url: [{schemes: ["file", "ftp"]}]};
- for (let [eventName, listener] of Object.entries(listeners)) {
- setup(webNavigation, eventName, listener, navFilter)
- }
- setup(webRequest, "onHeadersReceived", begin, reqFilter, ["blocking"]);
- browser.runtime.onMessage[method](onMessage);
- }
-
- // add or remove common webRequest listener
- for (let [eventName, listener] of Object.entries(listeners)) {
- setup(webRequest, eventName, listener, reqFilter);
- }
- }
-
- return {
- mv3Callbacks,
- register(scriptBuilder) {
- if (scriptBuilders.size === 0) listen(true);
- scriptBuilders.add(scriptBuilder);
- },
- unregister(scriptBuilder) {
- scriptBuilders.delete(scriptBuilder);
- if (scriptBuilders.size === 0) listen(false);
- }
- };
-})(); \ No newline at end of file
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