electron/atom/browser/api/event_emitter.cc
Samuel Attard 58a6fe13d6
feat: preloads and nodeIntegration in iframes (#16425)
* feat: add support for node / preloads in subframes

This feature has delibrately been built / implemented in such a way
that it has minimum impact on existing apps / code-paths.
Without enabling the new "nodeSupportInSubFrames" option basically none of this
new code will be hit.

The things that I believe need extra scrutiny are:

* Introduction of `event.reply` for IPC events and usage of `event.reply` instead of `event.sender.send()`
* Usage of `node::FreeEnvironment(env)` when the new option is enabled in order to avoid memory leaks.  I have tested this quite a bit and haven't managed to cause a crash but it is still feature flagged behind the "nodeSupportInSubFrames" flag to avoid potential impact.

Closes #10569
Closes #10401
Closes #11868
Closes #12505
Closes #14035

* feat: add support preloads in subframes for sandboxed renderers

* spec: add tests for new nodeSupportInSubFrames option

* spec: fix specs for .reply and ._replyInternal for internal messages

* chore: revert change to use flag instead of environment set size

* chore: clean up subframe impl

* chore: apply suggestions from code review

Co-Authored-By: MarshallOfSound <samuel.r.attard@gmail.com>

* chore: clean up reply usage

* chore: fix TS docs generation

* chore: cleanup after rebase

* chore: rename wrap to add in event fns
2019-01-22 11:24:46 -08:00

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2.8 KiB
C++

// Copyright (c) 2014 GitHub, Inc.
// Use of this source code is governed by the MIT license that can be
// found in the LICENSE file.
#include "atom/browser/api/event_emitter.h"
#include "atom/browser/api/event.h"
#include "content/public/browser/render_frame_host.h"
#include "native_mate/arguments.h"
#include "native_mate/dictionary.h"
#include "native_mate/object_template_builder.h"
#include "ui/events/event_constants.h"
#include "atom/common/node_includes.h"
namespace mate {
namespace {
v8::Persistent<v8::ObjectTemplate> event_template;
void PreventDefault(mate::Arguments* args) {
mate::Dictionary self(args->isolate(), args->GetThis());
self.Set("defaultPrevented", true);
}
// Create a pure JavaScript Event object.
v8::Local<v8::Object> CreateEventObject(v8::Isolate* isolate) {
if (event_template.IsEmpty()) {
event_template.Reset(
isolate,
ObjectTemplateBuilder(isolate, v8::ObjectTemplate::New(isolate))
.SetMethod("preventDefault", &PreventDefault)
.Build());
}
return v8::Local<v8::ObjectTemplate>::New(isolate, event_template)
->NewInstance(isolate->GetCurrentContext())
.ToLocalChecked();
}
} // namespace
namespace internal {
v8::Local<v8::Object> CreateJSEvent(v8::Isolate* isolate,
v8::Local<v8::Object> object,
content::RenderFrameHost* sender,
IPC::Message* message) {
v8::Local<v8::Object> event;
bool use_native_event = sender && message;
if (use_native_event) {
mate::Handle<mate::Event> native_event = mate::Event::Create(isolate);
native_event->SetSenderAndMessage(sender, message);
event = v8::Local<v8::Object>::Cast(native_event.ToV8());
} else {
event = CreateEventObject(isolate);
}
mate::Dictionary dict(isolate, event);
dict.Set("sender", object);
if (sender)
dict.Set("frameId", sender->GetRoutingID());
return event;
}
v8::Local<v8::Object> CreateCustomEvent(v8::Isolate* isolate,
v8::Local<v8::Object> object,
v8::Local<v8::Object> custom_event) {
v8::Local<v8::Object> event = CreateEventObject(isolate);
(void)event->SetPrototype(custom_event->CreationContext(), custom_event);
mate::Dictionary(isolate, event).Set("sender", object);
return event;
}
v8::Local<v8::Object> CreateEventFromFlags(v8::Isolate* isolate, int flags) {
mate::Dictionary obj = mate::Dictionary::CreateEmpty(isolate);
obj.Set("shiftKey", static_cast<bool>(flags & ui::EF_SHIFT_DOWN));
obj.Set("ctrlKey", static_cast<bool>(flags & ui::EF_CONTROL_DOWN));
obj.Set("altKey", static_cast<bool>(flags & ui::EF_ALT_DOWN));
obj.Set("metaKey", static_cast<bool>(flags & ui::EF_COMMAND_DOWN));
return obj.GetHandle();
}
} // namespace internal
} // namespace mate