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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/renderer/shared_worker/embedded_shared_worker_stub.h"
#include "base/message_loop/message_loop_proxy.h"
#include "content/child/appcache/appcache_dispatcher.h"
#include "content/child/appcache/web_application_cache_host_impl.h"
#include "content/child/scoped_child_process_reference.h"
#include "content/child/shared_worker_devtools_agent.h"
#include "content/child/webmessageportchannel_impl.h"
#include "content/common/worker_messages.h"
#include "content/renderer/render_thread_impl.h"
#include "content/renderer/shared_worker/embedded_shared_worker_permission_client_proxy.h"
#include "ipc/ipc_message_macros.h"
#include "third_party/WebKit/public/web/WebSecurityOrigin.h"
#include "third_party/WebKit/public/web/WebSharedWorker.h"
#include "third_party/WebKit/public/web/WebSharedWorkerClient.h"
namespace content {
namespace {
class SharedWorkerWebApplicationCacheHostImpl
: public WebApplicationCacheHostImpl {
public:
SharedWorkerWebApplicationCacheHostImpl(
blink::WebApplicationCacheHostClient* client)
: WebApplicationCacheHostImpl(client,
RenderThreadImpl::current()
->appcache_dispatcher()
->backend_proxy()) {}
// Main resource loading is different for workers. The main resource is
// loaded by the worker using WorkerScriptLoader.
// These overrides are stubbed out.
virtual void willStartMainResourceRequest(
blink::WebURLRequest&,
const blink::WebApplicationCacheHost*) {}
virtual void didReceiveResponseForMainResource(const blink::WebURLResponse&) {
}
virtual void didReceiveDataForMainResource(const char* data, unsigned len) {}
virtual void didFinishLoadingMainResource(bool success) {}
// Cache selection is also different for workers. We know at construction
// time what cache to select and do so then.
// These overrides are stubbed out.
virtual void selectCacheWithoutManifest() {}
virtual bool selectCacheWithManifest(const blink::WebURL& manifestURL) {
return true;
}
};
} // namespace
EmbeddedSharedWorkerStub::EmbeddedSharedWorkerStub(
const GURL& url,
const base::string16& name,
const base::string16& content_security_policy,
blink::WebContentSecurityPolicyType security_policy_type,
bool pause_on_start,
int route_id)
: route_id_(route_id),
name_(name),
runing_(false),
url_(url),
app_cache_host_(nullptr) {
RenderThreadImpl::current()->AddEmbeddedWorkerRoute(route_id_, this);
impl_ = blink::WebSharedWorker::create(this);
if (pause_on_start) {
// Pause worker context when it starts and wait until either DevTools client
// is attached or explicit resume notification is received.
impl_->pauseWorkerContextOnStart();
}
worker_devtools_agent_.reset(
new SharedWorkerDevToolsAgent(route_id, impl_));
impl_->startWorkerContext(url, name_,
content_security_policy, security_policy_type);
}
EmbeddedSharedWorkerStub::~EmbeddedSharedWorkerStub() {
RenderThreadImpl::current()->RemoveEmbeddedWorkerRoute(route_id_);
}
bool EmbeddedSharedWorkerStub::OnMessageReceived(
const IPC::Message& message) {
if (worker_devtools_agent_->OnMessageReceived(message))
return true;
bool handled = true;
IPC_BEGIN_MESSAGE_MAP(EmbeddedSharedWorkerStub, message)
IPC_MESSAGE_HANDLER(WorkerMsg_TerminateWorkerContext,
OnTerminateWorkerContext)
IPC_MESSAGE_HANDLER(WorkerMsg_Connect, OnConnect)
IPC_MESSAGE_UNHANDLED(handled = false)
IPC_END_MESSAGE_MAP()
return handled;
}
void EmbeddedSharedWorkerStub::OnChannelError() {
OnTerminateWorkerContext();
}
void EmbeddedSharedWorkerStub::workerReadyForInspection() {
Send(new WorkerHostMsg_WorkerReadyForInspection(route_id_));
}
void EmbeddedSharedWorkerStub::workerScriptLoaded() {
Send(new WorkerHostMsg_WorkerScriptLoaded(route_id_));
runing_ = true;
// Process any pending connections.
for (PendingChannelList::const_iterator iter = pending_channels_.begin();
iter != pending_channels_.end();
++iter) {
ConnectToChannel(*iter);
}
pending_channels_.clear();
}
void EmbeddedSharedWorkerStub::workerScriptLoadFailed() {
Send(new WorkerHostMsg_WorkerScriptLoadFailed(route_id_));
for (PendingChannelList::const_iterator iter = pending_channels_.begin();
iter != pending_channels_.end();
++iter) {
blink::WebMessagePortChannel* channel = *iter;
channel->destroy();
}
pending_channels_.clear();
Shutdown();
}
void EmbeddedSharedWorkerStub::workerContextClosed() {
Send(new WorkerHostMsg_WorkerContextClosed(route_id_));
}
void EmbeddedSharedWorkerStub::workerContextDestroyed() {
Send(new WorkerHostMsg_WorkerContextDestroyed(route_id_));
Shutdown();
}
void EmbeddedSharedWorkerStub::selectAppCacheID(long long app_cache_id) {
if (app_cache_host_) {
// app_cache_host_ could become stale as it's owned by blink's
// DocumentLoader. This method is assumed to be called while it's valid.
app_cache_host_->backend()->SelectCacheForSharedWorker(
app_cache_host_->host_id(), app_cache_id);
}
}
blink::WebNotificationPresenter*
EmbeddedSharedWorkerStub::notificationPresenter() {
// TODO(horo): delete this method if we have no plan to implement this.
NOTREACHED();
return NULL;
}
blink::WebApplicationCacheHost*
EmbeddedSharedWorkerStub::createApplicationCacheHost(
blink::WebApplicationCacheHostClient* client) {
app_cache_host_ = new SharedWorkerWebApplicationCacheHostImpl(client);
return app_cache_host_;
}
blink::WebWorkerPermissionClientProxy*
EmbeddedSharedWorkerStub::createWorkerPermissionClientProxy(
const blink::WebSecurityOrigin& origin) {
return new EmbeddedSharedWorkerPermissionClientProxy(
GURL(origin.toString()),
origin.isUnique(),
route_id_,
ChildThread::current()->thread_safe_sender());
}
void EmbeddedSharedWorkerStub::dispatchDevToolsMessage(
const blink::WebString& message) {
worker_devtools_agent_->SendDevToolsMessage(message);
}
void EmbeddedSharedWorkerStub::saveDevToolsAgentState(
const blink::WebString& state) {
worker_devtools_agent_->SaveDevToolsAgentState(state);
}
void EmbeddedSharedWorkerStub::Shutdown() {
delete this;
}
bool EmbeddedSharedWorkerStub::Send(IPC::Message* message) {
return RenderThreadImpl::current()->Send(message);
}
void EmbeddedSharedWorkerStub::ConnectToChannel(
WebMessagePortChannelImpl* channel) {
impl_->connect(channel);
Send(
new WorkerHostMsg_WorkerConnected(channel->message_port_id(), route_id_));
}
void EmbeddedSharedWorkerStub::OnConnect(int sent_message_port_id,
int routing_id) {
WebMessagePortChannelImpl* channel =
new WebMessagePortChannelImpl(routing_id,
sent_message_port_id,
base::MessageLoopProxy::current().get());
if (runing_) {
ConnectToChannel(channel);
} else {
// If two documents try to load a SharedWorker at the same time, the
// WorkerMsg_Connect for one of the documents can come in before the
// worker is started. Just queue up the connect and deliver it once the
// worker starts.
pending_channels_.push_back(channel);
}
}
void EmbeddedSharedWorkerStub::OnTerminateWorkerContext() {
runing_ = false;
impl_->terminateWorkerContext();
}
} // namespace content
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