gecko-dev/dom/base/test/chrome/cpows_parent.xul

<?xml version="1.0"?>
<?xml-stylesheet href="chrome://global/skin" type="text/css"?>
<?xml-stylesheet href="chrome://mochikit/content/tests/SimpleTest/test.css"
                 type="text/css"?>
<window title="MessageManager CPOW tests"
  xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
  onload="start()">

  <!-- test results are displayed in the html:body -->
  <label value="CPOWs"/>

  <script type="application/javascript"><![CDATA[
    var test_state = "remote";
    var test_node = null;
    var reentered = false;
    var savedMM = null;
    const Cu = Components.utils;

    function info(message) {
      return opener.wrappedJSObject.info(message);
    }

    function ok(condition, message) {
      return opener.wrappedJSObject.ok(condition, message);
    }

    function is(v1, v2, message) {
      return opener.wrappedJSObject.is(v1, v2, message);
    }

    function todo_is(v1, v2, message) {
      return opener.wrappedJSObject.todo_is(v1, v2, message);
    }

    // Make sure that an error in this file actually causes the test to fail.
    var gReceivedErrorProbe = false;
    window.onerror = function (msg, url, line) {
      if (/Test Error Probe/.test(msg)) {
        gReceivedErrorProbe = true;
        return;
      }
      ok(false, "Error while executing: \n" + msg + "\n" + url + ":" + line);
    };

    function testCpowMessage(message) {
      ok(message.json.check == "ok", "correct json");

      ok(!Components.utils.isCrossProcessWrapper(message.json), "not everything is a CPOW");

      let data = message.objects.data;
      let document = message.objects.document;
      if (test_state == "remote") {
        ok(Components.utils.isCrossProcessWrapper(data), "got a CPOW");
        ok(Components.utils.isCrossProcessWrapper(document), "got a CPOW");
      }
      ok(data.i === 5, "integer property");
      ok(data.b === true, "boolean property");
      ok(data.s === "hello", "string property");
      ok(data.x.i === 10, "nested property");
      ok(data.f() === 99, "function call");
      is(Object.getOwnPropertyDescriptor(data, "doesn't exist"), undefined,
         "getOwnPropertyDescriptor returns undefined for non-existant properties");
      ok(Object.getOwnPropertyDescriptor(data, "i").value, 5,
         "getOwnPropertyDescriptor.value works");
      let obj = new data.ctor();
      ok(obj.a === 3, "constructor call");
      is(document.title, "Hello, Kitty", "document node");
      is(typeof document.cookie, "string", "can get document.cookie");
      is(typeof document.defaultView.navigator.userAgent, "string", "can get navigator.userAgent");

      // Don't crash.
      document.defaultView.screen;

      data.i = 6;
      data.b = false;
      data.s = "bye";
      data.x = null;
      ok(data.i === 6, "integer property");
      ok(data.b === false, "boolean property");
      ok(data.s === "bye", "string property");
      ok(data.x === null, "nested property");

      let throwing = message.objects.throwing;
      // Based on the table on:
      // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Proxy
      let tests = [
        () => Object.getOwnPropertyDescriptor(throwing, 'test'),
        () => Object.getOwnPropertyNames(throwing),
        () => Object.defineProperty(throwing, 'test', {value: 1}),
        () => delete throwing.test,
        () => "test" in throwing,
        () => Object.prototype.hasOwnProperty.call(throwing, 'test'),
        () => throwing.test,
        () => { throwing.test = 1 },
        // () => { for (let prop in throwing) {} }, Bug 783829
        () => { for (let prop of throwing) {} },
        () => Object.keys(throwing),
        () => Function.prototype.call.call(throwing),
        () => new throwing,
        () => Object.preventExtensions(throwing),
        () => Object.freeze(throwing),
        () => Object.seal(throwing),
      ]

      for (let test of tests) {
        let threw = false;
        try {
          test()
        } catch (e) {
          threw = true;
        }
        ok(threw, "proxy operation threw exception");
      }

      let array = message.objects.array;
      let i = 1;
      for (let elt of array) {
        ok(elt === i, "correct element found");
        i++;
      }
      ok(i === 4, "array has correct length");

      let j = message.objects.for_json;
      let str = JSON.stringify(j);
      let j2 = JSON.parse(str);
      ok(j2.n === 3, "JSON integer property");
      ok(j2.a[0] === 1, "JSON array index");
      ok(j2.a[1] === 2, "JSON array index");
      ok(j2.a[2] === 3, "JSON array index");
      ok(j2.s === "hello", "JSON string property");
      ok(j2.o.x === 10, "JSON object property");

      let with_proto = message.objects.with_proto;
      let proto = Object.getPrototypeOf(with_proto);
      ok(proto.data == 42, "Object.getPrototypeOf works on CPOW");

      let with_null_proto = message.objects.with_null_proto;
      proto = Object.getPrototypeOf(with_null_proto);
      ok(proto === null, "Object.getPrototypeOf works on CPOW (null proto)");
    }

    function recvAsyncMessage(message) {
      testCpowMessage(message);
      savedMM.sendAsyncMessage("cpows:async_done");
    }

    function recvSyncMessage(message) {
      testCpowMessage(message);
    }

    function recvRpcMessage(message) {
      ok(message.json.check == "ok", "correct json");

      let data = message.objects.data;

      // Sanity check.
      ok(data.i === 5, "integer property");

      // Check that we re-enter.
      reentered = false;
      let result = data.reenter();
      ok(reentered, "re-entered rpc");
      ok(result == "ok", "got correct result");
    }

    function recvReenterMessage(message) {
      ok(message.objects.data.valid === true, "cpows work");
      reentered = true;
    }

    function recvNestedSyncMessage(message) {
      message.objects.data.reenter();
    }

    function recvReenterSyncMessage(message) {
      ok(false, "should not have received re-entered sync message");
    }

    function recvFailMessage(message) {
      ok(false, message.json.message);
    }

    function recvDoneMessage(message) {
      if (test_state == "remote") {
        test_node.parentNode.removeChild(test_node);
        run_tests("inprocess");
        return;
      }

      finish();
    }

    function recvParentTest(message) {
      let func = message.objects.func;
      let result = func(n => 2*n);
      ok(result == 20, "result == 20");
      function f() {
        return 101;
      }
      let obj = {a:1, __exposedProps__: {"a": "r"}};
      savedMM.sendAsyncMessage("cpows:from_parent", {}, {obj: obj, func: f});
    }

    // Make sure errors in this file actually hit window.onerror.
    function recvErrorReportingTest(message) {
      throw "Test Error Probe";
    }

    let savedElement = null;
    function recvDomTest(message) {
      savedElement = message.objects.element;

      is(savedElement.QueryInterface(Components.interfaces.nsISupports), savedElement,
         "QI to nsISupports works");
      is(savedElement.QueryInterface(Components.interfaces.nsIDOMNode), savedElement,
         "QI to a random (implemented) interface works");

      function testNoInterface(savedElement, i) {
        try {
          savedElement.QueryInterface(i);
          ok(false, "should have thrown an exception");
        } catch (e) {
          is(e.result, Components.results.NS_ERROR_NO_INTERFACE, "threw the right exception");
        }
      }

      testNoInterface(savedElement, Components.interfaces.nsIDOMAttr);
      testNoInterface(savedElement, Components.interfaces.nsIClassInfo);

      // Test to ensure that we don't pass CPOWs to C++-implemented interfaces.
      // See bug 1072980.
      if (test_state == "remote") {
        // This doesn't work because we intercept toString and QueryInterface specially
        // and don't cache the function pointer.
        // See bug 1140636.
        todo_is(savedElement.toString, savedElement.toString, "toString identity works");
        todo_is(savedElement.QueryInterface, savedElement.QueryInterface, "toString identity works");

        is(Object.prototype.toString.call(savedElement), "[object HTMLDivElement]",
           "prove that this works (and doesn't leak)");

        is(Object.prototype.toString.call(savedElement), "[object HTMLDivElement]",
           "prove that this works twice (since we cache it and doesn't leak)");

        // This does work because we create a CPOW for isEqualNode that stays
        // alive as long as we have a reference to the first CPOW (so as long
        // as it's detectable).
        is(savedElement.isEqualNode, savedElement.isEqualNode, "webidl function identity works");

        let walker = Components.classes["@mozilla.org/inspector/deep-tree-walker;1"]
                               .createInstance(Components.interfaces.inIDeepTreeWalker);
        const SHOW_ELEMENT = Components.interfaces.nsIDOMNodeFilter.SHOW_ELEMENT;
        walker.showAnonymousContent = true;
        walker.showSubDocuments = false;

        try {
          walker.init(savedElement, SHOW_ELEMENT);
          ok(false, "expected exception passing CPOW to C++");
        } catch (e) {
          is(e.result, Components.results.NS_ERROR_XPC_CANT_PASS_CPOW_TO_NATIVE,
             "got exception when passing CPOW to C++");
        }
      }
    }

    function recvDomTestAfterGC(message) {
      let id;
      try {
        id = savedElement.id;
      } catch (e) {
        ok(false, "Got exception using DOM element");
      }
      is(id, "it_works", "DOM element has expected ID");
    }

    function recvXrayTest(message) {
      let element = message.objects.element;
      is(element.foo, undefined, "DOM element does not expose content properties");
    }

    function recvSymbolTest(message) {
      let object = message.objects.object;
      is(object[Symbol.iterator], Symbol.iterator, "Should use Symbol.iterator");
      is(Symbol.keyFor(object[Symbol.for("cpow-test")]), "cpow-test", "Symbols aren't registered correctly");
      let symbols = Object.getOwnPropertySymbols(object);
      is(symbols.length, 2, "Object should have two symbol keys");
      let test = undefined;
      for (let x of message.objects.test) {
        test = x;
      }
      is(test, "a", "for .. of iteration should work");
    }

    let systemGlobal = this;
    function recvCompartmentTest(message) {
      let getUnprivilegedObject = message.objects.getUnprivilegedObject;
      let testParentObject = message.objects.testParentObject;

      // Make sure that parent->child CPOWs live in the parent's privileged junk scope.
      let unprivilegedObject = getUnprivilegedObject();
      is(Cu.getGlobalForObject(getUnprivilegedObject),
         Cu.getGlobalForObject(unprivilegedObject),
         "all parent->child CPOWs should live in the same scope");
      let cpowLocation = Cu.getCompartmentLocation(getUnprivilegedObject);
      ok(/Privileged Junk/.test(cpowLocation),
         "parent->child CPOWs should live in the privileged junk scope: " + cpowLocation);

      // Make sure that parent->child CPOWs point through a privileged scope in the child
      // (the privileged junk scope, but we don't have a good way to test for that
      // specifically).
      is(unprivilegedObject.expando, undefined, "parent->child references should get Xrays");
      is(unprivilegedObject.wrappedJSObject.expando, 42, "parent->child references should get waivable Xrays");

      // Send an object to the child to let it verify invariants in the other direction.
      function passMe() { return 42; };
      passMe.expando = 42;
      let results = testParentObject(passMe);
      ok(results.length > 0, "Need results");
      results.forEach((x) => is(x.result, "PASS", x.message));
    }

    function recvRegExpTest(message) {
      let regexp = message.objects.regexp;

      // These work generically.
      is(regexp.toString(), "/myRegExp/g", "toString works right");
      ok(regexp.test("I like myRegExp to match"), "No false positives");
      ok(!regexp.test("asdfsdf"), "No false positives");

      // These go over regexp_toShared.
      is("filler myRegExp filler".search(regexp), 7, "String.prototype.match works right");
      var shell = /x/;
      shell.compile(regexp);
      is(regexp.toString(), shell.toString(), ".compile works right");
    }

    function recvPostMessageTest(message) {
      let win = message.objects.win;
      win.postMessage('nookery', '*');
      ok(true, "Didn't crash invoking postMessage over CPOW");
    }

    let savedWilldieObj;
    let wontDie = {f:2, __exposedProps__: {"f": "r"}};
    function recvLifetimeTest1(message) {
      let obj = message.objects.obj;
      savedWilldieObj = obj.will_die;
      ok(savedWilldieObj.f == 1, "limited-lifetime CPOW works at first");
      obj.wont_die = wontDie;
      obj = null;
      return 10;
    }
    function recvLifetimeTest2(message) {
      let threw = false;
      try {
        savedWilldieObj.f;
      } catch (e) {
        threw = true;
      }
      ok(threw, "limited-lifetime CPOW stopped working");
      wontDie = null;
      Components.utils.schedulePreciseGC(function() {
        savedMM.sendAsyncMessage("cpows:lifetime_test_3");
      });
    }

    function recvCancelTest(msg) {
      let failed = false;
      try {
        msg.objects.f();
      } catch (e if /cross-process JS call failed/.test(String(e))) {
        failed = true;
      }
      ok(failed, "CPOW should fail due to cancelation");
      msg.target.messageManager.sendAsyncMessage("cpows:cancel_test_done");
    }

    function recvCancelSyncMessage() {
      return 12;
    }

    function recvCancelTest2(msg) {
      let failed = false;
      try {
        msg.objects.f();
      } catch (e if /cross-process JS call failed/.test(String(e))) {
        failed = true;
      }
      ok(failed, "CPOW should fail due to cancelation");
      msg.target.messageManager.sendAsyncMessage("cpows:cancel_test2_done");
    }

    function recvUnsafe(msg) {
      let failed = false;

      const PREF_UNSAFE_FORBIDDEN = "dom.ipc.cpows.forbid-unsafe-from-browser";
      opener.wrappedJSObject.SpecialPowers.setBoolPref(PREF_UNSAFE_FORBIDDEN, true);
      try {
        msg.objects.f();
      } catch (e if /unsafe CPOW usage forbidden/.test(String(e))) {
        failed = true;
      }
      opener.wrappedJSObject.SpecialPowers.clearUserPref(PREF_UNSAFE_FORBIDDEN);
      ok(failed, "CPOW should fail when unsafe");
      msg.target.messageManager.sendAsyncMessage("cpows:unsafe_done");
    }

    function recvSafe(msg) {
      const PREF_UNSAFE_FORBIDDEN = "dom.ipc.cpows.forbid-unsafe-from-browser";
      opener.wrappedJSObject.SpecialPowers.setBoolPref(PREF_UNSAFE_FORBIDDEN, true);
      try {
        msg.objects.f();
      } catch (e if /unsafe CPOW usage forbidden/.test(String(e))) {
        ok(false, "cpow failed");
      }
      opener.wrappedJSObject.SpecialPowers.clearUserPref(PREF_UNSAFE_FORBIDDEN);
      msg.target.messageManager.sendAsyncMessage("cpows:safe_done");
    }

    function run_tests(type) {
      info("Running tests: " + type);
      var node = document.getElementById('cpowbrowser_' + type);

      test_state = type;
      test_node = node;

      function recvIsRemote(message) {
        return type == "remote";
      }

      var mm = node.messageManager;
      savedMM = mm;
      mm.addMessageListener("cpows:is_remote", recvIsRemote);
      mm.addMessageListener("cpows:async", recvAsyncMessage);
      mm.addMessageListener("cpows:sync", recvSyncMessage);
      mm.addMessageListener("cpows:rpc", recvRpcMessage);
      mm.addMessageListener("cpows:reenter", recvReenterMessage);
      mm.addMessageListener("cpows:reenter", recvReenterMessage);
      mm.addMessageListener("cpows:nested_sync", recvNestedSyncMessage);
      mm.addMessageListener("cpows:reenter_sync", recvReenterSyncMessage);
      mm.addMessageListener("cpows:done", recvDoneMessage);
      mm.addMessageListener("cpows:fail", recvFailMessage);
      mm.addMessageListener("cpows:parent_test", recvParentTest);
      mm.addMessageListener("cpows:error_reporting_test", recvErrorReportingTest);
      mm.addMessageListener("cpows:dom_test", recvDomTest);
      mm.addMessageListener("cpows:dom_test_after_gc", recvDomTestAfterGC);
      mm.addMessageListener("cpows:xray_test", recvXrayTest);
      if (typeof Symbol === "function") {
        mm.addMessageListener("cpows:symbol_test", recvSymbolTest);
      }
      mm.addMessageListener("cpows:compartment_test", recvCompartmentTest);
      mm.addMessageListener("cpows:regexp_test", recvRegExpTest);
      mm.addMessageListener("cpows:postmessage_test", recvPostMessageTest);
      mm.addMessageListener("cpows:lifetime_test_1", recvLifetimeTest1);
      mm.addMessageListener("cpows:lifetime_test_2", recvLifetimeTest2);
      mm.addMessageListener("cpows:cancel_test", recvCancelTest);
      mm.addMessageListener("cpows:cancel_sync_message", recvCancelSyncMessage);
      mm.addMessageListener("cpows:cancel_test2", recvCancelTest2);
      mm.addMessageListener("cpows:unsafe", recvUnsafe);
      mm.addMessageListener("cpows:safe", recvSafe);
      mm.loadFrameScript("chrome://mochitests/content/chrome/dom/base/test/chrome/cpows_child.js", true);
    }

    function start() {
      run_tests('remote');
    }

    function finish() {
      ok(gReceivedErrorProbe, "Should have reported error probe");
      opener.setTimeout("done()", 0);
      window.close();
    }
  ]]></script>

  <browser type="content" src="about:blank" id="cpowbrowser_remote" remote="true"/>
  <browser type="content" src="about:blank" id="cpowbrowser_inprocess"/>
</window>