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/* Copyright 2020 Mozilla Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import { SandboxSupportBase } from "resource://pdf.js/build/pdf.sandbox.external.sys.mjs";
class SandboxSupport extends SandboxSupportBase {
constructor(win, sandbox) {
super(win);
this.sandbox = sandbox;
}
exportValueToSandbox(val) {
return Cu.cloneInto(val, this.sandbox);
}
importValueFromSandbox(val) {
return Cu.cloneInto(val, this.win);
}
createErrorForSandbox(errorMessage) {
return new this.sandbox.Error(errorMessage);
}
}
export class PdfSandbox {
constructor(window, data) {
this.window = window;
const sandbox = Cu.Sandbox(null, {
sandboxName: "PDF.js scripting sandbox",
sameZoneAs: window,
wantXrays: true,
wantGlobalProperties: [],
wantComponents: false,
wantExportHelpers: false,
});
this.sandbox = sandbox;
this.support = new SandboxSupport(window, sandbox);
const sandboxInit = Cu.createObjectIn(sandbox);
sandboxInit.data = Cu.cloneInto(data, sandbox);
sandbox.callExternalFunction = Cu.exportFunction(
this.support.createSandboxExternals(),
sandbox
);
try {
// Run the code in the bundle
Services.scriptloader.loadSubScript(
"resource://pdf.js/build/pdf.scripting.mjs",
sandbox
);
this.support.commFun =
sandbox.pdfjsScripting.wrappedJSObject.initSandbox(sandboxInit);
} catch (error) {
// error belongs to the sandbox so create a new one
const msg = error.message;
this.destroy();
throw new Error(msg);
}
}
dispatchEvent(event) {
this.support.callSandboxFunction("dispatchEvent", event);
}
destroy() {
if (this.sandbox) {
this.support.destroy();
this.support = null;
Cu.nukeSandbox(this.sandbox);
this.sandbox = null;
}
}
}
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