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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 "extensions/browser/extension_message_filter.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/render_process_host.h"
#include "content/public/browser/resource_dispatcher_host.h"
#include "extensions/browser/event_router.h"
#include "extensions/browser/extension_system.h"
#include "extensions/browser/process_manager.h"
#include "extensions/common/extension_messages.h"
#include "ipc/ipc_message_macros.h"
using content::BrowserThread;
using content::RenderProcessHost;
namespace extensions {
ExtensionMessageFilter::ExtensionMessageFilter(int render_process_id,
content::BrowserContext* context)
: BrowserMessageFilter(ExtensionMsgStart),
render_process_id_(render_process_id),
browser_context_(context) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
}
ExtensionMessageFilter::~ExtensionMessageFilter() {}
void ExtensionMessageFilter::OverrideThreadForMessage(
const IPC::Message& message,
BrowserThread::ID* thread) {
switch (message.type()) {
case ExtensionHostMsg_AddListener::ID:
case ExtensionHostMsg_RemoveListener::ID:
case ExtensionHostMsg_AddLazyListener::ID:
case ExtensionHostMsg_RemoveLazyListener::ID:
case ExtensionHostMsg_AddFilteredListener::ID:
case ExtensionHostMsg_RemoveFilteredListener::ID:
case ExtensionHostMsg_ShouldSuspendAck::ID:
case ExtensionHostMsg_SuspendAck::ID:
*thread = BrowserThread::UI;
break;
default:
break;
}
}
bool ExtensionMessageFilter::OnMessageReceived(const IPC::Message& message,
bool* message_was_ok) {
bool handled = true;
IPC_BEGIN_MESSAGE_MAP_EX(ExtensionMessageFilter, message, *message_was_ok)
IPC_MESSAGE_HANDLER(ExtensionHostMsg_AddListener,
OnExtensionAddListener)
IPC_MESSAGE_HANDLER(ExtensionHostMsg_RemoveListener,
OnExtensionRemoveListener)
IPC_MESSAGE_HANDLER(ExtensionHostMsg_AddLazyListener,
OnExtensionAddLazyListener)
IPC_MESSAGE_HANDLER(ExtensionHostMsg_RemoveLazyListener,
OnExtensionRemoveLazyListener)
IPC_MESSAGE_HANDLER(ExtensionHostMsg_AddFilteredListener,
OnExtensionAddFilteredListener)
IPC_MESSAGE_HANDLER(ExtensionHostMsg_RemoveFilteredListener,
OnExtensionRemoveFilteredListener)
IPC_MESSAGE_HANDLER(ExtensionHostMsg_ShouldSuspendAck,
OnExtensionShouldSuspendAck)
IPC_MESSAGE_HANDLER(ExtensionHostMsg_SuspendAck,
OnExtensionSuspendAck)
IPC_MESSAGE_HANDLER(ExtensionHostMsg_GenerateUniqueID,
OnExtensionGenerateUniqueID)
IPC_MESSAGE_HANDLER(ExtensionHostMsg_ResumeRequests,
OnExtensionResumeRequests);
IPC_MESSAGE_UNHANDLED(handled = false)
IPC_END_MESSAGE_MAP()
return handled;
}
void ExtensionMessageFilter::OnExtensionAddListener(
const std::string& extension_id,
const std::string& event_name) {
RenderProcessHost* process = RenderProcessHost::FromID(render_process_id_);
if (!process)
return;
EventRouter* router = ExtensionSystem::Get(browser_context_)->event_router();
if (!router)
return;
router->AddEventListener(event_name, process, extension_id);
}
void ExtensionMessageFilter::OnExtensionRemoveListener(
const std::string& extension_id,
const std::string& event_name) {
RenderProcessHost* process = RenderProcessHost::FromID(render_process_id_);
if (!process)
return;
EventRouter* router = ExtensionSystem::Get(browser_context_)->event_router();
if (!router)
return;
router->RemoveEventListener(event_name, process, extension_id);
}
void ExtensionMessageFilter::OnExtensionAddLazyListener(
const std::string& extension_id, const std::string& event_name) {
EventRouter* router = ExtensionSystem::Get(browser_context_)->event_router();
if (!router)
return;
router->AddLazyEventListener(event_name, extension_id);
}
void ExtensionMessageFilter::OnExtensionRemoveLazyListener(
const std::string& extension_id, const std::string& event_name) {
EventRouter* router = ExtensionSystem::Get(browser_context_)->event_router();
if (!router)
return;
router->RemoveLazyEventListener(event_name, extension_id);
}
void ExtensionMessageFilter::OnExtensionAddFilteredListener(
const std::string& extension_id,
const std::string& event_name,
const base::DictionaryValue& filter,
bool lazy) {
RenderProcessHost* process = RenderProcessHost::FromID(render_process_id_);
if (!process)
return;
EventRouter* router = ExtensionSystem::Get(browser_context_)->event_router();
if (!router)
return;
router->AddFilteredEventListener(
event_name, process, extension_id, filter, lazy);
}
void ExtensionMessageFilter::OnExtensionRemoveFilteredListener(
const std::string& extension_id,
const std::string& event_name,
const base::DictionaryValue& filter,
bool lazy) {
RenderProcessHost* process = RenderProcessHost::FromID(render_process_id_);
if (!process)
return;
EventRouter* router = ExtensionSystem::Get(browser_context_)->event_router();
if (!router)
return;
router->RemoveFilteredEventListener(
event_name, process, extension_id, filter, lazy);
}
void ExtensionMessageFilter::OnExtensionShouldSuspendAck(
const std::string& extension_id, int sequence_id) {
ProcessManager* process_manager =
ExtensionSystem::Get(browser_context_)->process_manager();
if (process_manager)
process_manager->OnShouldSuspendAck(extension_id, sequence_id);
}
void ExtensionMessageFilter::OnExtensionSuspendAck(
const std::string& extension_id) {
ProcessManager* process_manager =
ExtensionSystem::Get(browser_context_)->process_manager();
if (process_manager)
process_manager->OnSuspendAck(extension_id);
}
void ExtensionMessageFilter::OnExtensionGenerateUniqueID(int* unique_id) {
static int next_unique_id = 0;
*unique_id = ++next_unique_id;
}
void ExtensionMessageFilter::OnExtensionResumeRequests(int route_id) {
content::ResourceDispatcherHost::Get()->ResumeBlockedRequestsForRoute(
render_process_id_, route_id);
}
} // namespace extensions
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