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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
"use strict";
Cu.import("resource://gre/modules/ExtensionCommon.jsm");
const {
SchemaAPIManager,
} = ExtensionCommon;
this.unknownvar = "Some module-global var";
var gUniqueId = 0;
// SchemaAPIManager's loadScript uses loadSubScript to load a script. This
// requires a local (resource://) URL. So create such a temporary URL for
// testing.
function toLocalURI(code) {
let dataUrl = `data:charset=utf-8,${encodeURIComponent(code)}`;
let uniqueResPart = `need-a-local-uri-for-subscript-loading-${++gUniqueId}`;
Services.io.getProtocolHandler("resource")
.QueryInterface(Ci.nsIResProtocolHandler)
.setSubstitution(uniqueResPart, Services.io.newURI(dataUrl, null, null));
return `resource://${uniqueResPart}`;
}
add_task(function* test_global_isolation() {
let manA = new SchemaAPIManager("procA");
let manB = new SchemaAPIManager("procB");
// The "global" variable should be persistent and shared.
manA.loadScript(toLocalURI`global.globalVar = 1;`);
do_check_eq(manA.global.globalVar, 1);
do_check_eq(manA.global.unknownvar, undefined);
manA.loadScript(toLocalURI`global.canSeeGlobal = global.globalVar;`);
do_check_eq(manA.global.canSeeGlobal, 1);
// Each loadScript call should have their own scope, and global is shared.
manA.loadScript(toLocalURI`this.aVar = 1; global.thisScopeVar = aVar`);
do_check_eq(manA.global.aVar, undefined);
do_check_eq(manA.global.thisScopeVar, 1);
manA.loadScript(toLocalURI`global.differentScopeVar = this.aVar;`);
do_check_eq(manA.global.differentScopeVar, undefined);
manA.loadScript(toLocalURI`global.cantSeeOtherScope = typeof aVar;`);
do_check_eq(manA.global.cantSeeOtherScope, "undefined");
manB.loadScript(toLocalURI`global.tryReadOtherGlobal = global.tryagain;`);
do_check_eq(manA.global.tryReadOtherGlobal, undefined);
// Cu.import without second argument exports to the caller's global. Let's
// verify that it does not leak to the SchemaAPIManager's global.
do_check_eq(typeof ExtensionUtils, "undefined"); // Sanity check #1.
manA.loadScript(toLocalURI`global.hasExtUtils = typeof ExtensionUtils;`);
do_check_eq(manA.global.hasExtUtils, "undefined"); // Sanity check #2
Cu.import("resource://gre/modules/ExtensionUtils.jsm");
do_check_eq(typeof ExtensionUtils, "object"); // Sanity check #3.
manA.loadScript(toLocalURI`global.hasExtUtils = typeof ExtensionUtils;`);
do_check_eq(manA.global.hasExtUtils, "undefined");
manB.loadScript(toLocalURI`global.hasExtUtils = typeof ExtensionUtils;`);
do_check_eq(manB.global.hasExtUtils, "undefined");
// Confirm that Cu.import does not leak between SchemaAPIManager globals.
manA.loadScript(toLocalURI`
Cu.import("resource://gre/modules/ExtensionUtils.jsm");
global.hasExtUtils = typeof ExtensionUtils;
`);
do_check_eq(manA.global.hasExtUtils, "object"); // Sanity check.
manB.loadScript(toLocalURI`global.hasExtUtils = typeof ExtensionUtils;`);
do_check_eq(manB.global.hasExtUtils, "undefined");
// Prototype modifications should be isolated.
manA.loadScript(toLocalURI`
Object.prototype.modifiedByA = "Prrft";
global.fromA = {};
`);
manA.loadScript(toLocalURI`
global.fromAagain = {};
`);
manB.loadScript(toLocalURI`
global.fromB = {};
`);
do_check_eq(manA.global.modifiedByA, "Prrft");
do_check_eq(manA.global.fromA.modifiedByA, "Prrft");
do_check_eq(manA.global.fromAagain.modifiedByA, "Prrft");
do_check_eq(manB.global.modifiedByA, undefined);
do_check_eq(manB.global.fromB.modifiedByA, undefined);
});
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