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Diffstat (limited to 'data/extensions/jsr@javascriptrestrictor/background.js')
| -rw-r--r-- | data/extensions/jsr@javascriptrestrictor/background.js | 155 |
1 files changed, 0 insertions, 155 deletions
diff --git a/data/extensions/jsr@javascriptrestrictor/background.js b/data/extensions/jsr@javascriptrestrictor/background.js deleted file mode 100644 index 12afcde..0000000 --- a/data/extensions/jsr@javascriptrestrictor/background.js +++ /dev/null @@ -1,155 +0,0 @@ -/** \file - * \brief Main background script - * - * \author Copyright (C) 2019 Libor Polcak - * \author Copyright (C) 2019 Martin Timko - * \author Copyright (C) 2023 Martin Zmitko - * - * \license 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/CachedStorage.js - -CachedStorage.init({ - tab_status: {}, - tab_urls: {}, -}); - -function updateBadge(text, tabid) { - actionApi.setBadgeText({text: text, tabId: tabid}); -} - -// get active tab and pass it -var queryInfo = { - active: true, - currentWindow: true -}; - -// get level for updated tab -function tabUpdate(tabid, changeInfo) { - if (changeInfo.status === "loading") { - delete tab_status[tabid]; - } - var url = changeInfo["url"] || tab_urls[tabid]; - if (url === undefined) { - return wrapping_groups.empty_level; - } - let current_level = getCurrentLevelJSON(url); - tab_urls[tabid] = url; - CachedStorage.save(); - return current_level; -} -// on tab reload or tab change, update metadata -browser.tabs.onUpdated.addListener(tabUpdate); // reload tab - -const scriptSrcRegex = /script-src\s/; -// Modify CSP headers to allow WASM execution in page context -function cspRequestProcessor(details) { - // Because this handler fires before configuration for the page is created, - // we need to search for the configuration for that domain now. - let subDomains = extractSubDomains(getEffectiveDomain(details.url)); - let found = false; - for (let domain of subDomains.reverse()) { - if (domain in domains) { - found = true; - if (domains[domain].wasm !== 2) { - return {}; - } - break; - } - } - // If no configuration is found, use the default level. - if (!found && default_level.wasm !== 2) { - return {}; - } - - let modified = false; - let headers = details.responseHeaders; - for (let header of headers) { - let name = header.name.toLowerCase(); - if (name !== "content-security-policy" && - name !== "content-security-policy-report-only" && - name !== "x-webkit-csp") { - continue; - } - let origCSP = header.value; - header.value = header.value.replace(scriptSrcRegex, "script-src 'wasm-unsafe-eval' "); - if (origCSP !== header.value) { - modified = true; - } - } - return modified ? {responseHeaders: headers} : {}; -} -// Attach listener only in chromium where the WASM module is instantiated directly in -// page context, subject to the page's CSP. Code inserted as script tags isn't subject -// to script-src origins, it is, however, subject to the 'unsafe' group of script evaluation rules. -if (typeof browser_polyfill_used !== "undefined" && browser_polyfill_used) { - try { - browser.webRequest.onHeadersReceived.addListener(cspRequestProcessor, - {urls: ["<all_urls>"], - types: ["main_frame", "sub_frame"]}, - ["blocking", "responseHeaders"] - ); - } catch (e) { - console.error(e); - // mv3, can't block! - // TODO: check whether we can do something about this eiter with DNR or new scripting APIs - } -} - -// Communication channels - -/** - * Create a port to popup window - * - * The communication cannels are mostly used because - * browser.runtime.getBackgroundPage() does not work as expected. See - * also https://bugzilla.mozilla.org/show_bug.cgi?id=1329304. - */ -async function connected(port) { - if (port.name === "port_from_popup") { - let current_level = wrapping_groups.empty_level; - try { - // We always send back current level - let [tab] = await browser.tabs.query(queryInfo); - current_level = getCurrentLevelJSON(tab.url); - } catch (e) { - // Stick to the empty_level and ignore the exception - } - port.postMessage(current_level); - port.onMessage.addListener(function(msg) { - port.postMessage(current_level); - }); - } -} -browser.runtime.onConnect.addListener(connected); - -/** - * Listen to detected API calls and update badge accordingly - */ -fpdObservable.add_observer({ - notify: function(api, tabid, type, count) { - let group_name = wrapping_groups.wrapper_map[api]; - if (!group_name) { - return; // The API does not belong to any group - } - let tab_stats = get_or_create(tab_status, tabid, {}); - tab_stats[group_name] = true; - updateBadge(String(Object.keys(tab_stats).length), tabid); - } -}); -browser.tabs.onRemoved.addListener(tabid => delete tab_status[tabid]); |