[api] Fix DescriptorInterceptor with access check.

The DescriptorInterceptor should intercept all
Object.getOwnPropertyDescriptor calls. This CL fixes
the interceptor's behavior if the iterator state is
ACCESS_CHECK.

BUG=

Review-Url: https://codereview.chromium.org/2707263002
Cr-Commit-Position: refs/heads/master@{#43417}

src/objects.cc

@@ -6925,7 +6925,13 @@ namespace {
 
 Maybe<bool> GetPropertyDescriptorWithInterceptor(LookupIterator* it,
                                                  PropertyDescriptor* desc) {
-  if (it->state() == LookupIterator::INTERCEPTOR) {
+  bool has_access = true;
+  if (it->state() == LookupIterator::ACCESS_CHECK) {
+    has_access = it->HasAccess() || JSObject::AllCanRead(it);
+    it->Next();
+  }
+
+  if (has_access && it->state() == LookupIterator::INTERCEPTOR) {
     Isolate* isolate = it->isolate();
     Handle<InterceptorInfo> interceptor = it->GetInterceptor();
     if (!interceptor->descriptor()->IsUndefined(isolate)) {
@@ -6969,6 +6975,7 @@ Maybe<bool> GetPropertyDescriptorWithInterceptor(LookupIterator* it,
       }
     }
   }
+  it->Restart();
   return Just(false);
 }
 }  // namespace

test/cctest/test-api-interceptors.cc

@@ -575,6 +575,51 @@ THREADED_TEST(SetterCallbackFunctionDeclarationInterceptor) {
   CHECK_EQ(3, set_was_called_counter);
 }
 
+namespace {
+int descriptor_was_called;
+
+void PropertyDescriptorCallback(
+    Local<Name> name, const v8::PropertyCallbackInfo<v8::Value>& info) {
+  // Intercept the callback by setting a different descriptor.
+  descriptor_was_called++;
+  const char* code =
+      "var desc = {value: 5};"
+      "desc;";
+  Local<Value> descriptor = v8_compile(code)
+                                ->Run(info.GetIsolate()->GetCurrentContext())
+                                .ToLocalChecked();
+  info.GetReturnValue().Set(descriptor);
+}
+}  // namespace
+
+// Check that the descriptor callback is called on the global object.
+THREADED_TEST(DescriptorCallbackOnGlobalObject) {
+  v8::HandleScope scope(CcTest::isolate());
+  LocalContext env;
+  v8::Local<v8::FunctionTemplate> templ =
+      v8::FunctionTemplate::New(CcTest::isolate());
+
+  v8::Local<ObjectTemplate> object_template = templ->InstanceTemplate();
+  object_template->SetHandler(v8::NamedPropertyHandlerConfiguration(
+      nullptr, nullptr, PropertyDescriptorCallback, nullptr, nullptr, nullptr));
+  v8::Local<v8::Context> ctx =
+      v8::Context::New(CcTest::isolate(), nullptr, object_template);
+
+  descriptor_was_called = 0;
+
+  // Declare function.
+  v8::Local<v8::String> code = v8_str(
+      "var x = 42; var desc = Object.getOwnPropertyDescriptor(this, 'x'); "
+      "desc.value;");
+  CHECK_EQ(5, v8::Script::Compile(ctx, code)
+                  .ToLocalChecked()
+                  ->Run(ctx)
+                  .ToLocalChecked()
+                  ->Int32Value(ctx)
+                  .FromJust());
+  CHECK_EQ(1, descriptor_was_called);
+}
+
 namespace {
 void QueryCallbackSetDontDelete(
     Local<Name> property, const v8::PropertyCallbackInfo<v8::Integer>& info) {
@@ -4636,7 +4681,7 @@ TEST(NamedAllCanReadInterceptor) {
   ExpectInt32("checked.whatever", 17);
   CHECK(!CompileRun("Object.getOwnPropertyDescriptor(checked, 'whatever')")
              ->IsUndefined());
-  CHECK_EQ(5, access_check_data.count);
+  CHECK_EQ(6, access_check_data.count);
 
   access_check_data.result = false;
   ExpectInt32("checked.whatever", intercept_data_0.value);
@@ -4645,7 +4690,7 @@ TEST(NamedAllCanReadInterceptor) {
     CompileRun("Object.getOwnPropertyDescriptor(checked, 'whatever')");
     CHECK(try_catch.HasCaught());
   }
-  CHECK_EQ(7, access_check_data.count);
+  CHECK_EQ(9, access_check_data.count);
 
   intercept_data_1.should_intercept = true;
   ExpectInt32("checked.whatever", intercept_data_1.value);
@@ -4654,7 +4699,7 @@ TEST(NamedAllCanReadInterceptor) {
     CompileRun("Object.getOwnPropertyDescriptor(checked, 'whatever')");
     CHECK(try_catch.HasCaught());
   }
-  CHECK_EQ(9, access_check_data.count);
+  CHECK_EQ(12, access_check_data.count);
   g_access_check_data = nullptr;
 }
 
@@ -4723,7 +4768,7 @@ TEST(IndexedAllCanReadInterceptor) {
   ExpectInt32("checked[15]", 17);
   CHECK(!CompileRun("Object.getOwnPropertyDescriptor(checked, '15')")
              ->IsUndefined());
-  CHECK_EQ(5, access_check_data.count);
+  CHECK_EQ(6, access_check_data.count);
 
   access_check_data.result = false;
   ExpectInt32("checked[15]", intercept_data_0.value);
@@ -4732,7 +4777,7 @@ TEST(IndexedAllCanReadInterceptor) {
     CompileRun("Object.getOwnPropertyDescriptor(checked, '15')");
     CHECK(try_catch.HasCaught());
   }
-  CHECK_EQ(7, access_check_data.count);
+  CHECK_EQ(9, access_check_data.count);
 
   intercept_data_1.should_intercept = true;
   ExpectInt32("checked[15]", intercept_data_1.value);
@@ -4741,7 +4786,7 @@ TEST(IndexedAllCanReadInterceptor) {
     CompileRun("Object.getOwnPropertyDescriptor(checked, '15')");
     CHECK(try_catch.HasCaught());
   }
-  CHECK_EQ(9, access_check_data.count);
+  CHECK_EQ(12, access_check_data.count);
 
   g_access_check_data = nullptr;
 }