зеркало из https://github.com/mozilla/gecko-dev.git
661 строка
22 KiB
JavaScript
661 строка
22 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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this.EXPORTED_SYMBOLS = [ "SitePermissions" ];
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ChromeUtils.import("resource://gre/modules/Services.jsm");
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ChromeUtils.import("resource://gre/modules/XPCOMUtils.jsm");
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var gStringBundle =
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Services.strings.createBundle("chrome://browser/locale/sitePermissions.properties");
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/**
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* A helper module to manage temporarily blocked permissions.
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*
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* Permissions are keyed by browser, so methods take a Browser
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* element to identify the corresponding permission set.
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*
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* This uses a WeakMap to key browsers, so that entries are
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* automatically cleared once the browser stops existing
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* (once there are no other references to the browser object);
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*/
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const TemporaryBlockedPermissions = {
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// This is a three level deep map with the following structure:
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//
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// Browser => {
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// <prePath>: {
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// <permissionID>: {Number} <timeStamp>
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// }
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// }
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//
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// Only the top level browser elements are stored via WeakMap. The WeakMap
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// value is an object with URI prePaths as keys. The keys of that object
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// are ids that identify permissions that were set for the specific URI.
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// The final value is an object containing the timestamp of when the permission
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// was set (in order to invalidate after a certain amount of time has passed).
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_stateByBrowser: new WeakMap(),
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// Private helper method that bundles some shared behavior for
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// get() and getAll(), e.g. deleting permissions when they have expired.
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_get(entry, prePath, id, timeStamp) {
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if (timeStamp == null) {
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delete entry[prePath][id];
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return null;
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}
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if (timeStamp + SitePermissions.temporaryPermissionExpireTime < Date.now()) {
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delete entry[prePath][id];
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return null;
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}
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return {id, state: SitePermissions.BLOCK, scope: SitePermissions.SCOPE_TEMPORARY};
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},
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// Sets a new permission for the specified browser.
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set(browser, id) {
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if (!browser) {
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return;
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}
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if (!this._stateByBrowser.has(browser)) {
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this._stateByBrowser.set(browser, {});
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}
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let entry = this._stateByBrowser.get(browser);
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let prePath = browser.currentURI.prePath;
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if (!entry[prePath]) {
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entry[prePath] = {};
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}
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entry[prePath][id] = Date.now();
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},
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// Removes a permission with the specified id for the specified browser.
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remove(browser, id) {
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if (!browser) {
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return;
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}
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let entry = this._stateByBrowser.get(browser);
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let prePath = browser.currentURI.prePath;
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if (entry && entry[prePath]) {
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delete entry[prePath][id];
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}
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},
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// Gets a permission with the specified id for the specified browser.
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get(browser, id) {
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if (!browser || !browser.currentURI) {
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return null;
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}
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let entry = this._stateByBrowser.get(browser);
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let prePath = browser.currentURI.prePath;
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if (entry && entry[prePath]) {
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let permission = entry[prePath][id];
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return this._get(entry, prePath, id, permission);
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}
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return null;
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},
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// Gets all permissions for the specified browser.
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// Note that only permissions that apply to the current URI
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// of the passed browser element will be returned.
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getAll(browser) {
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let permissions = [];
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let entry = this._stateByBrowser.get(browser);
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let prePath = browser.currentURI.prePath;
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if (entry && entry[prePath]) {
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let timeStamps = entry[prePath];
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for (let id of Object.keys(timeStamps)) {
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let permission = this._get(entry, prePath, id, timeStamps[id]);
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// _get() returns null when the permission has expired.
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if (permission) {
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permissions.push(permission);
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}
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}
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}
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return permissions;
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},
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// Clears all permissions for the specified browser.
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// Unlike other methods, this does NOT clear only for
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// the currentURI but the whole browser state.
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clear(browser) {
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this._stateByBrowser.delete(browser);
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},
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// Copies the temporary permission state of one browser
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// into a new entry for the other browser.
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copy(browser, newBrowser) {
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let entry = this._stateByBrowser.get(browser);
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if (entry) {
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this._stateByBrowser.set(newBrowser, entry);
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}
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},
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};
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/**
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* A module to manage permanent and temporary permissions
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* by URI and browser.
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*
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* Some methods have the side effect of dispatching a "PermissionStateChange"
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* event on changes to temporary permissions, as mentioned in the respective docs.
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*/
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this.SitePermissions = {
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// Permission states.
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UNKNOWN: Services.perms.UNKNOWN_ACTION,
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ALLOW: Services.perms.ALLOW_ACTION,
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BLOCK: Services.perms.DENY_ACTION,
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PROMPT: Services.perms.PROMPT_ACTION,
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ALLOW_COOKIES_FOR_SESSION: Components.interfaces.nsICookiePermission.ACCESS_SESSION,
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// Permission scopes.
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SCOPE_REQUEST: "{SitePermissions.SCOPE_REQUEST}",
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SCOPE_TEMPORARY: "{SitePermissions.SCOPE_TEMPORARY}",
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SCOPE_SESSION: "{SitePermissions.SCOPE_SESSION}",
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SCOPE_PERSISTENT: "{SitePermissions.SCOPE_PERSISTENT}",
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_defaultPrefBranch: Services.prefs.getBranch("permissions.default."),
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/**
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* Gets all custom permissions for a given URI.
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* Install addon permission is excluded, check bug 1303108.
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*
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* @return {Array} a list of objects with the keys:
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* - id: the permissionId of the permission
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* - scope: the scope of the permission (e.g. SitePermissions.SCOPE_TEMPORARY)
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* - state: a constant representing the current permission state
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* (e.g. SitePermissions.ALLOW)
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*/
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getAllByURI(uri) {
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let result = [];
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if (!this.isSupportedURI(uri)) {
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return result;
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}
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let permissions = Services.perms.getAllForURI(uri);
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while (permissions.hasMoreElements()) {
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let permission = permissions.getNext();
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// filter out unknown permissions
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if (gPermissionObject[permission.type]) {
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// XXX Bug 1303108 - Control Center should only show non-default permissions
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if (permission.type == "install") {
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continue;
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}
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// Hide canvas permission when privacy.resistFingerprinting is false.
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if ((permission.type == "canvas") &&
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!Services.prefs.getBoolPref("privacy.resistFingerprinting")) {
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continue;
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}
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let scope = this.SCOPE_PERSISTENT;
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if (permission.expireType == Services.perms.EXPIRE_SESSION) {
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scope = this.SCOPE_SESSION;
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}
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result.push({
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id: permission.type,
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scope,
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state: permission.capability,
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});
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}
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}
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return result;
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},
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/**
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* Returns all custom permissions for a given browser.
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*
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* To receive a more detailed, albeit less performant listing see
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* SitePermissions.getAllPermissionDetailsForBrowser().
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*
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* @param {Browser} browser
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* The browser to fetch permission for.
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*
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* @return {Array} a list of objects with the keys:
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* - id: the permissionId of the permission
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* - state: a constant representing the current permission state
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* (e.g. SitePermissions.ALLOW)
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* - scope: a constant representing how long the permission will
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* be kept.
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*/
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getAllForBrowser(browser) {
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let permissions = {};
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for (let permission of TemporaryBlockedPermissions.getAll(browser)) {
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permission.scope = this.SCOPE_TEMPORARY;
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permissions[permission.id] = permission;
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}
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for (let permission of this.getAllByURI(browser.currentURI)) {
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permissions[permission.id] = permission;
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}
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return Object.values(permissions);
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},
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/**
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* Returns a list of objects with detailed information on all permissions
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* that are currently set for the given browser.
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*
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* @param {Browser} browser
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* The browser to fetch permission for.
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*
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* @return {Array<Object>} a list of objects with the keys:
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* - id: the permissionID of the permission
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* - state: a constant representing the current permission state
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* (e.g. SitePermissions.ALLOW)
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* - scope: a constant representing how long the permission will
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* be kept.
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* - label: the localized label
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*/
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getAllPermissionDetailsForBrowser(browser) {
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return this.getAllForBrowser(browser).map(({id, scope, state}) =>
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({id, scope, state, label: this.getPermissionLabel(id)}));
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},
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/**
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* Checks whether a UI for managing permissions should be exposed for a given
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* URI. This excludes file URIs, for instance, as they don't have a host,
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* even though nsIPermissionManager can still handle them.
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*
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* @param {nsIURI} uri
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* The URI to check.
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*
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* @return {boolean} if the URI is supported.
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*/
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isSupportedURI(uri) {
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return uri && ["http", "https", "moz-extension"].includes(uri.scheme);
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},
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/**
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* Gets an array of all permission IDs.
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*
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* @return {Array<String>} an array of all permission IDs.
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*/
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listPermissions() {
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let permissions = Object.keys(gPermissionObject);
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// Hide canvas permission when privacy.resistFingerprinting is false.
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if (!Services.prefs.getBoolPref("privacy.resistFingerprinting")) {
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permissions = permissions.filter(permission => permission !== "canvas");
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}
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return permissions;
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},
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/**
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* Returns an array of permission states to be exposed to the user for a
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* permission with the given ID.
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*
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* @param {string} permissionID
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* The ID to get permission states for.
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*
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* @return {Array<SitePermissions state>} an array of all permission states.
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*/
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getAvailableStates(permissionID) {
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if (permissionID in gPermissionObject &&
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gPermissionObject[permissionID].states)
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return gPermissionObject[permissionID].states;
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/* Since the permissions we are dealing with have adopted the convention
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* of treating UNKNOWN == PROMPT, we only include one of either UNKNOWN
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* or PROMPT in this list, to avoid duplicating states. */
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if (this.getDefault(permissionID) == this.UNKNOWN)
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return [ SitePermissions.UNKNOWN, SitePermissions.ALLOW, SitePermissions.BLOCK ];
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return [ SitePermissions.PROMPT, SitePermissions.ALLOW, SitePermissions.BLOCK ];
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},
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/**
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* Returns the default state of a particular permission.
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*
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* @param {string} permissionID
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* The ID to get the default for.
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*
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* @return {SitePermissions.state} the default state.
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*/
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getDefault(permissionID) {
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// If the permission has custom logic for getting its default value,
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// try that first.
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if (permissionID in gPermissionObject &&
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gPermissionObject[permissionID].getDefault)
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return gPermissionObject[permissionID].getDefault();
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// Otherwise try to get the default preference for that permission.
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return this._defaultPrefBranch.getIntPref(permissionID, this.UNKNOWN);
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},
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/**
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* Returns the state and scope of a particular permission for a given URI.
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*
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* This method will NOT dispatch a "PermissionStateChange" event on the specified
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* browser if a temporary permission was removed because it has expired.
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*
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* @param {nsIURI} uri
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* The URI to check.
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* @param {String} permissionID
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* The id of the permission.
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* @param {Browser} browser (optional)
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* The browser object to check for temporary permissions.
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*
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* @return {Object} an object with the keys:
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* - state: The current state of the permission
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* (e.g. SitePermissions.ALLOW)
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* - scope: The scope of the permission
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* (e.g. SitePermissions.SCOPE_PERSISTENT)
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*/
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get(uri, permissionID, browser) {
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let defaultState = this.getDefault(permissionID);
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let result = { state: defaultState, scope: this.SCOPE_PERSISTENT };
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if (this.isSupportedURI(uri)) {
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let permission = null;
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if (permissionID in gPermissionObject &&
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gPermissionObject[permissionID].exactHostMatch) {
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permission = Services.perms.getPermissionObjectForURI(uri, permissionID, true);
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} else {
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permission = Services.perms.getPermissionObjectForURI(uri, permissionID, false);
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}
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if (permission) {
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result.state = permission.capability;
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if (permission.expireType == Services.perms.EXPIRE_SESSION) {
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result.scope = this.SCOPE_SESSION;
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}
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}
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}
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if (result.state == defaultState) {
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// If there's no persistent permission saved, check if we have something
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// set temporarily.
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let value = TemporaryBlockedPermissions.get(browser, permissionID);
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if (value) {
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result.state = value.state;
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result.scope = this.SCOPE_TEMPORARY;
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}
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}
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return result;
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},
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/**
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* Sets the state of a particular permission for a given URI or browser.
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* This method will dispatch a "PermissionStateChange" event on the specified
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* browser if a temporary permission was set
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*
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* @param {nsIURI} uri
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* The URI to set the permission for.
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* Note that this will be ignored if the scope is set to SCOPE_TEMPORARY
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* @param {String} permissionID
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* The id of the permission.
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* @param {SitePermissions state} state
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* The state of the permission.
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* @param {SitePermissions scope} scope (optional)
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* The scope of the permission. Defaults to SCOPE_PERSISTENT.
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* @param {Browser} browser (optional)
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* The browser object to set temporary permissions on.
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* This needs to be provided if the scope is SCOPE_TEMPORARY!
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*/
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set(uri, permissionID, state, scope = this.SCOPE_PERSISTENT, browser = null) {
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if (state == this.UNKNOWN || state == this.getDefault(permissionID)) {
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this.remove(uri, permissionID, browser);
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return;
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}
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if (state == this.ALLOW_COOKIES_FOR_SESSION && permissionID != "cookie") {
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throw "ALLOW_COOKIES_FOR_SESSION can only be set on the cookie permission";
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}
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// Save temporary permissions.
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if (scope == this.SCOPE_TEMPORARY) {
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// We do not support setting temp ALLOW for security reasons.
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// In its current state, this permission could be exploited by subframes
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// on the same page. This is because for BLOCK we ignore the request
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// URI and only consider the current browser URI, to avoid notification spamming.
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//
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// If you ever consider removing this line, you likely want to implement
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// a more fine-grained TemporaryBlockedPermissions that temporarily blocks for the
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// entire browser, but temporarily allows only for specific frames.
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if (state != this.BLOCK) {
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throw "'Block' is the only permission we can save temporarily on a browser";
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}
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if (!browser) {
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throw "TEMPORARY scoped permissions require a browser object";
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}
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TemporaryBlockedPermissions.set(browser, permissionID);
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browser.dispatchEvent(new browser.ownerGlobal
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.CustomEvent("PermissionStateChange"));
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} else if (this.isSupportedURI(uri)) {
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let perms_scope = Services.perms.EXPIRE_NEVER;
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if (scope == this.SCOPE_SESSION) {
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perms_scope = Services.perms.EXPIRE_SESSION;
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}
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Services.perms.add(uri, permissionID, state, perms_scope);
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}
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},
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/**
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* Removes the saved state of a particular permission for a given URI and/or browser.
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* This method will dispatch a "PermissionStateChange" event on the specified
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* browser if a temporary permission was removed.
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*
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* @param {nsIURI} uri
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* The URI to remove the permission for.
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* @param {String} permissionID
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* The id of the permission.
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* @param {Browser} browser (optional)
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* The browser object to remove temporary permissions on.
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*/
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remove(uri, permissionID, browser) {
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if (this.isSupportedURI(uri))
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Services.perms.remove(uri, permissionID);
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// TemporaryBlockedPermissions.get() deletes expired permissions automatically,
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if (TemporaryBlockedPermissions.get(browser, permissionID)) {
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// If it exists but has not expired, remove it explicitly.
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TemporaryBlockedPermissions.remove(browser, permissionID);
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// Send a PermissionStateChange event only if the permission hasn't expired.
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browser.dispatchEvent(new browser.ownerGlobal
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.CustomEvent("PermissionStateChange"));
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}
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},
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/**
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* Clears all permissions that were temporarily saved.
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*
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* @param {Browser} browser
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* The browser object to clear.
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*/
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clearTemporaryPermissions(browser) {
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TemporaryBlockedPermissions.clear(browser);
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},
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/**
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* Copy all permissions that were temporarily saved on one
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* browser object to a new browser.
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*
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* @param {Browser} browser
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* The browser object to copy from.
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* @param {Browser} newBrowser
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* The browser object to copy to.
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*/
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copyTemporaryPermissions(browser, newBrowser) {
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TemporaryBlockedPermissions.copy(browser, newBrowser);
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},
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/**
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* Returns the localized label for the permission with the given ID, to be
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* used in a UI for managing permissions.
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*
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* @param {string} permissionID
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* The permission to get the label for.
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*
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* @return {String} the localized label.
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*/
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getPermissionLabel(permissionID) {
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let labelID = gPermissionObject[permissionID].labelID || permissionID;
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return gStringBundle.GetStringFromName("permission." + labelID + ".label");
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},
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/**
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* Returns the localized label for the given permission state, to be used in
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* a UI for managing permissions.
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*
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* @param {SitePermissions state} state
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* The state to get the label for.
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*
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* @return {String|null} the localized label or null if an
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* unknown state was passed.
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*/
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getMultichoiceStateLabel(state) {
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switch (state) {
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case this.UNKNOWN:
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case this.PROMPT:
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return gStringBundle.GetStringFromName("state.multichoice.alwaysAsk");
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case this.ALLOW:
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return gStringBundle.GetStringFromName("state.multichoice.allow");
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case this.ALLOW_COOKIES_FOR_SESSION:
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return gStringBundle.GetStringFromName("state.multichoice.allowForSession");
|
|
case this.BLOCK:
|
|
return gStringBundle.GetStringFromName("state.multichoice.block");
|
|
default:
|
|
return null;
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Returns the localized label for a permission's current state.
|
|
*
|
|
* @param {SitePermissions state} state
|
|
* The state to get the label for.
|
|
* @param {SitePermissions scope} scope (optional)
|
|
* The scope to get the label for.
|
|
*
|
|
* @return {String|null} the localized label or null if an
|
|
* unknown state was passed.
|
|
*/
|
|
getCurrentStateLabel(state, scope = null) {
|
|
switch (state) {
|
|
case this.PROMPT:
|
|
return gStringBundle.GetStringFromName("state.current.prompt");
|
|
case this.ALLOW:
|
|
if (scope && scope != this.SCOPE_PERSISTENT)
|
|
return gStringBundle.GetStringFromName("state.current.allowedTemporarily");
|
|
return gStringBundle.GetStringFromName("state.current.allowed");
|
|
case this.ALLOW_COOKIES_FOR_SESSION:
|
|
return gStringBundle.GetStringFromName("state.current.allowedForSession");
|
|
case this.BLOCK:
|
|
if (scope && scope != this.SCOPE_PERSISTENT)
|
|
return gStringBundle.GetStringFromName("state.current.blockedTemporarily");
|
|
return gStringBundle.GetStringFromName("state.current.blocked");
|
|
default:
|
|
return null;
|
|
}
|
|
},
|
|
};
|
|
|
|
var gPermissionObject = {
|
|
/* Holds permission ID => options pairs.
|
|
*
|
|
* Supported options:
|
|
*
|
|
* - exactHostMatch
|
|
* Allows sub domains to have their own permissions.
|
|
* Defaults to false.
|
|
*
|
|
* - getDefault
|
|
* Called to get the permission's default state.
|
|
* Defaults to UNKNOWN, indicating that the user will be asked each time
|
|
* a page asks for that permissions.
|
|
*
|
|
* - labelID
|
|
* Use the given ID instead of the permission name for looking up strings.
|
|
* e.g. "desktop-notification2" to use permission.desktop-notification2.label
|
|
*
|
|
* - states
|
|
* Array of permission states to be exposed to the user.
|
|
* Defaults to ALLOW, BLOCK and the default state (see getDefault).
|
|
*/
|
|
|
|
"image": {
|
|
states: [ SitePermissions.ALLOW, SitePermissions.BLOCK ],
|
|
},
|
|
|
|
"cookie": {
|
|
states: [ SitePermissions.ALLOW, SitePermissions.ALLOW_COOKIES_FOR_SESSION, SitePermissions.BLOCK ],
|
|
getDefault() {
|
|
if (Services.prefs.getIntPref("network.cookie.cookieBehavior") == 2)
|
|
return SitePermissions.BLOCK;
|
|
|
|
if (Services.prefs.getIntPref("network.cookie.lifetimePolicy") == 2)
|
|
return SitePermissions.ALLOW_COOKIES_FOR_SESSION;
|
|
|
|
return SitePermissions.ALLOW;
|
|
}
|
|
},
|
|
|
|
"desktop-notification": {
|
|
exactHostMatch: true,
|
|
labelID: "desktop-notification2",
|
|
},
|
|
|
|
"camera": {
|
|
exactHostMatch: true,
|
|
},
|
|
|
|
"microphone": {
|
|
exactHostMatch: true,
|
|
},
|
|
|
|
"screen": {
|
|
exactHostMatch: true,
|
|
states: [ SitePermissions.UNKNOWN, SitePermissions.BLOCK ],
|
|
},
|
|
|
|
"popup": {
|
|
getDefault() {
|
|
return Services.prefs.getBoolPref("dom.disable_open_during_load") ?
|
|
SitePermissions.BLOCK : SitePermissions.ALLOW;
|
|
},
|
|
states: [ SitePermissions.ALLOW, SitePermissions.BLOCK ],
|
|
},
|
|
|
|
"install": {
|
|
getDefault() {
|
|
return Services.prefs.getBoolPref("xpinstall.whitelist.required") ?
|
|
SitePermissions.BLOCK : SitePermissions.ALLOW;
|
|
},
|
|
states: [ SitePermissions.ALLOW, SitePermissions.BLOCK ],
|
|
},
|
|
|
|
"geo": {
|
|
exactHostMatch: true
|
|
},
|
|
|
|
"focus-tab-by-prompt": {
|
|
exactHostMatch: true,
|
|
states: [ SitePermissions.UNKNOWN, SitePermissions.ALLOW ],
|
|
},
|
|
"persistent-storage": {
|
|
exactHostMatch: true
|
|
},
|
|
|
|
"shortcuts": {
|
|
states: [ SitePermissions.ALLOW, SitePermissions.BLOCK ],
|
|
},
|
|
|
|
"canvas": {
|
|
},
|
|
};
|
|
|
|
// Delete this entry while being pre-off
|
|
// or the persistent-storage permission would appear in Page info's Permission section
|
|
if (!Services.prefs.getBoolPref("browser.storageManager.enabled")) {
|
|
delete gPermissionObject["persistent-storage"];
|
|
}
|
|
|
|
XPCOMUtils.defineLazyPreferenceGetter(SitePermissions, "temporaryPermissionExpireTime",
|
|
"privacy.temporary_permission_expire_time_ms", 3600 * 1000);
|