/
atom_renderer_client.cc
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/
atom_renderer_client.cc
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// Copyright (c) 2013 GitHub, Inc.
// Use of this source code is governed by the MIT license that can be
// found in the LICENSE file.
#include "atom/renderer/atom_renderer_client.h"
#include <string>
#include <vector>
#include "atom/common/api/atom_bindings.h"
#include "atom/common/api/event_emitter_caller.h"
#include "atom/common/asar/asar_util.h"
#include "atom/common/node_bindings.h"
#include "atom/common/options_switches.h"
#include "atom/renderer/atom_render_frame_observer.h"
#include "atom/renderer/web_worker_observer.h"
#include "base/command_line.h"
#include "content/public/renderer/render_frame.h"
#include "native_mate/dictionary.h"
#include "third_party/blink/public/web/web_document.h"
#include "third_party/blink/public/web/web_local_frame.h"
#include "atom/common/node_includes.h"
#include "third_party/electron_node/src/node_native_module.h"
namespace atom {
namespace {
bool IsDevToolsExtension(content::RenderFrame* render_frame) {
return static_cast<GURL>(render_frame->GetWebFrame()->GetDocument().Url())
.SchemeIs("chrome-extension");
}
} // namespace
AtomRendererClient::AtomRendererClient()
: node_bindings_(NodeBindings::Create(NodeBindings::RENDERER)),
atom_bindings_(new AtomBindings(uv_default_loop())) {}
AtomRendererClient::~AtomRendererClient() {
asar::ClearArchives();
}
void AtomRendererClient::RenderThreadStarted() {
RendererClientBase::RenderThreadStarted();
}
void AtomRendererClient::RenderFrameCreated(
content::RenderFrame* render_frame) {
new AtomRenderFrameObserver(render_frame, this);
RendererClientBase::RenderFrameCreated(render_frame);
}
void AtomRendererClient::RenderViewCreated(content::RenderView* render_view) {
RendererClientBase::RenderViewCreated(render_view);
}
void AtomRendererClient::RunScriptsAtDocumentStart(
content::RenderFrame* render_frame) {
// Inform the document start pharse.
v8::HandleScope handle_scope(v8::Isolate::GetCurrent());
node::Environment* env = GetEnvironment(render_frame);
if (env)
mate::EmitEvent(env->isolate(), env->process_object(), "document-start");
}
void AtomRendererClient::RunScriptsAtDocumentEnd(
content::RenderFrame* render_frame) {
// Inform the document end pharse.
v8::HandleScope handle_scope(v8::Isolate::GetCurrent());
node::Environment* env = GetEnvironment(render_frame);
if (env)
mate::EmitEvent(env->isolate(), env->process_object(), "document-end");
}
void AtomRendererClient::DidCreateScriptContext(
v8::Handle<v8::Context> context,
content::RenderFrame* render_frame) {
RendererClientBase::DidCreateScriptContext(context, render_frame);
// TODO(zcbenz): Do not create Node environment if node integration is not
// enabled.
// Do not load node if we're aren't a main frame or a devtools extension
// unless node support has been explicitly enabled for sub frames
bool is_main_frame =
render_frame->IsMainFrame() && !render_frame->GetWebFrame()->Opener();
bool is_devtools = IsDevToolsExtension(render_frame);
bool allow_node_in_subframes =
base::CommandLine::ForCurrentProcess()->HasSwitch(
switches::kNodeIntegrationInSubFrames);
bool should_load_node =
is_main_frame || is_devtools || allow_node_in_subframes;
if (!should_load_node) {
return;
}
injected_frames_.insert(render_frame);
// If this is the first environment we are creating, prepare the node
// bindings.
if (!node_integration_initialized_) {
node_integration_initialized_ = true;
node_bindings_->Initialize();
node_bindings_->PrepareMessageLoop();
}
// Setup node tracing controller.
if (!node::tracing::TraceEventHelper::GetAgent())
node::tracing::TraceEventHelper::SetAgent(node::CreateAgent());
// Setup node environment for each window.
node::Environment* env = node_bindings_->CreateEnvironment(context);
environments_.insert(env);
// Add Electron extended APIs.
atom_bindings_->BindTo(env->isolate(), env->process_object());
AddRenderBindings(env->isolate(), env->process_object());
mate::Dictionary process_dict(env->isolate(), env->process_object());
process_dict.SetReadOnly("isMainFrame", render_frame->IsMainFrame());
// Load everything.
node_bindings_->LoadEnvironment(env);
if (node_bindings_->uv_env() == nullptr) {
// Make uv loop being wrapped by window context.
node_bindings_->set_uv_env(env);
// Give the node loop a run to make sure everything is ready.
node_bindings_->RunMessageLoop();
}
}
void AtomRendererClient::WillReleaseScriptContext(
v8::Handle<v8::Context> context,
content::RenderFrame* render_frame) {
if (injected_frames_.find(render_frame) == injected_frames_.end())
return;
injected_frames_.erase(render_frame);
node::Environment* env = node::Environment::GetCurrent(context);
if (environments_.find(env) == environments_.end())
return;
environments_.erase(env);
mate::EmitEvent(env->isolate(), env->process_object(), "exit");
// The main frame may be replaced.
if (env == node_bindings_->uv_env())
node_bindings_->set_uv_env(nullptr);
// Destroy the node environment. We only do this if node support has been
// enabled for sub-frames to avoid a change-of-behavior / introduce crashes
// for existing users.
// TODO(MarshallOfSOund): Free the environment regardless of this switch
if (base::CommandLine::ForCurrentProcess()->HasSwitch(
switches::kNodeIntegrationInSubFrames))
node::FreeEnvironment(env);
// AtomBindings is tracking node environments.
atom_bindings_->EnvironmentDestroyed(env);
}
bool AtomRendererClient::ShouldFork(blink::WebLocalFrame* frame,
const GURL& url,
const std::string& http_method,
bool is_initial_navigation,
bool is_server_redirect) {
// Handle all the navigations and reloads in browser.
// FIXME We only support GET here because http method will be ignored when
// the OpenURLFromTab is triggered, which means form posting would not work,
// we should solve this by patching Chromium in future.
return http_method == "GET";
}
void AtomRendererClient::DidInitializeWorkerContextOnWorkerThread(
v8::Local<v8::Context> context) {
if (base::CommandLine::ForCurrentProcess()->HasSwitch(
switches::kNodeIntegrationInWorker)) {
WebWorkerObserver::GetCurrent()->ContextCreated(context);
}
}
void AtomRendererClient::WillDestroyWorkerContextOnWorkerThread(
v8::Local<v8::Context> context) {
if (base::CommandLine::ForCurrentProcess()->HasSwitch(
switches::kNodeIntegrationInWorker)) {
WebWorkerObserver::GetCurrent()->ContextWillDestroy(context);
}
}
void AtomRendererClient::SetupMainWorldOverrides(
v8::Handle<v8::Context> context,
content::RenderFrame* render_frame) {
// Setup window overrides in the main world context
// Wrap the bundle into a function that receives the isolatedWorld as
// an argument.
auto* isolate = context->GetIsolate();
std::vector<v8::Local<v8::String>> isolated_bundle_params = {
node::FIXED_ONE_BYTE_STRING(isolate, "nodeProcess"),
node::FIXED_ONE_BYTE_STRING(isolate, "isolatedWorld")};
std::vector<v8::Local<v8::Value>> isolated_bundle_args = {
GetEnvironment(render_frame)->process_object(),
GetContext(render_frame->GetWebFrame(), isolate)->Global()};
node::per_process::native_module_loader.CompileAndCall(
context, "electron/js2c/isolated_bundle", &isolated_bundle_params,
&isolated_bundle_args, nullptr);
}
node::Environment* AtomRendererClient::GetEnvironment(
content::RenderFrame* render_frame) const {
if (injected_frames_.find(render_frame) == injected_frames_.end())
return nullptr;
v8::HandleScope handle_scope(v8::Isolate::GetCurrent());
auto context =
GetContext(render_frame->GetWebFrame(), v8::Isolate::GetCurrent());
node::Environment* env = node::Environment::GetCurrent(context);
if (environments_.find(env) == environments_.end())
return nullptr;
return env;
}
} // namespace atom