tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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sharedWorker_sharedWorker.js (2818B)

      1 /**
      2 * Any copyright is dedicated to the Public Domain.
      3 * http://creativecommons.org/publicdomain/zero/1.0/
      4 */
      5 "use strict";
      6 
      7 if (!("self" in this)) {
      8  throw new Error("No 'self' exists on SharedWorkerGlobalScope!");
      9 }
     10 if (this !== self) {
     11  throw new Error("'self' not equal to global object!");
     12 }
     13 if (!(self instanceof SharedWorkerGlobalScope)) {
     14  throw new Error("self not a SharedWorkerGlobalScope instance!");
     15 }
     16 
     17 var propsToCheck = [
     18  "location",
     19  "navigator",
     20  "close",
     21  "importScripts",
     22  "setTimeout",
     23  "clearTimeout",
     24  "setInterval",
     25  "clearInterval",
     26  "dump",
     27  "atob",
     28  "btoa",
     29 ];
     30 
     31 for (var index = 0; index < propsToCheck.length; index++) {
     32  var prop = propsToCheck[index];
     33  if (!(prop in self)) {
     34    throw new Error("SharedWorkerGlobalScope has no '" + prop + "' property!");
     35  }
     36 }
     37 
     38 onconnect = function (event) {
     39  if (!("SharedWorkerGlobalScope" in self)) {
     40    throw new Error("SharedWorkerGlobalScope should be visible!");
     41  }
     42  if (!(self instanceof SharedWorkerGlobalScope)) {
     43    throw new Error("The global should be a SharedWorkerGlobalScope!");
     44  }
     45  if (!(self instanceof WorkerGlobalScope)) {
     46    throw new Error("The global should be a WorkerGlobalScope!");
     47  }
     48  if ("DedicatedWorkerGlobalScope" in self) {
     49    throw new Error("DedicatedWorkerGlobalScope should not be visible!");
     50  }
     51  if (!(event instanceof MessageEvent)) {
     52    throw new Error("'connect' event is not a MessageEvent!");
     53  }
     54  if (!("ports" in event)) {
     55    throw new Error("'connect' event doesn't have a 'ports' property!");
     56  }
     57  if (event.ports.length != 1) {
     58    throw new Error(
     59      "'connect' event has a 'ports' property with length '" +
     60        event.ports.length +
     61        "'!"
     62    );
     63  }
     64  if (!event.ports[0]) {
     65    throw new Error("'connect' event has a null 'ports[0]' property!");
     66  }
     67  if (!(event.ports[0] instanceof MessagePort)) {
     68    throw new Error(
     69      "'connect' event has a 'ports[0]' property that isn't a " + "MessagePort!"
     70    );
     71  }
     72  if (!(event.ports[0] == event.source)) {
     73    throw new Error("'connect' event source property is incorrect!");
     74  }
     75  if (event.data) {
     76    throw new Error("'connect' event has data: " + event.data);
     77  }
     78 
     79  // Statement after return should trigger a warning, but NOT fire error events
     80  // at us.
     81  (function () {
     82    return;
     83    // eslint-disable-next-line no-unreachable
     84    1;
     85  });
     86 
     87  event.ports[0].onmessage = function (msg) {
     88    if (!(msg instanceof MessageEvent)) {
     89      throw new Error("'message' event is not a MessageEvent!");
     90    }
     91    if (!("ports" in msg)) {
     92      throw new Error("'message' event doesn't have a 'ports' property!");
     93    }
     94    if (msg.ports === null) {
     95      throw new Error("'message' event has a null 'ports' property!");
     96    }
     97    msg.target.postMessage(msg.data);
     98    throw new Error(msg.data);
     99  };
    100 };