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// Copyright (c) 2012 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 "chrome/browser/renderer_host/chrome_render_view_host_observer.h"
#include "base/command_line.h"
#include "chrome/browser/extensions/extension_service.h"
#include "chrome/browser/net/predictor.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/common/chrome_notification_types.h"
#include "chrome/common/chrome_switches.h"
#include "chrome/common/extensions/extension_messages.h"
#include "chrome/common/render_messages.h"
#include "chrome/common/url_constants.h"
#include "content/public/browser/child_process_security_policy.h"
#include "content/public/browser/notification_service.h"
#include "content/public/browser/render_process_host.h"
#include "content/public/browser/render_view_host.h"
#include "content/public/browser/site_instance.h"
using content::ChildProcessSecurityPolicy;
using content::RenderViewHost;
using content::SiteInstance;
using extensions::Extension;
ChromeRenderViewHostObserver::ChromeRenderViewHostObserver(
RenderViewHost* render_view_host, chrome_browser_net::Predictor* predictor)
: content::RenderViewHostObserver(render_view_host),
predictor_(predictor) {
SiteInstance* site_instance = render_view_host->GetSiteInstance();
profile_ = Profile::FromBrowserContext(
site_instance->GetBrowserContext());
InitRenderViewHostForExtensions();
}
ChromeRenderViewHostObserver::~ChromeRenderViewHostObserver() {
if (render_view_host())
RemoveRenderViewHostForExtensions(render_view_host());
}
void ChromeRenderViewHostObserver::RenderViewHostInitialized() {
InitRenderViewForExtensions();
}
void ChromeRenderViewHostObserver::RenderViewHostDestroyed(
RenderViewHost* rvh) {
RemoveRenderViewHostForExtensions(rvh);
delete this;
}
void ChromeRenderViewHostObserver::Navigate(const GURL& url) {
if (!predictor_)
return;
if (!CommandLine::ForCurrentProcess()->HasSwitch(switches::kChromeFrame) &&
(url.SchemeIs(chrome::kHttpScheme) || url.SchemeIs(chrome::kHttpsScheme)))
predictor_->PreconnectUrlAndSubresources(url);
}
bool ChromeRenderViewHostObserver::OnMessageReceived(
const IPC::Message& message) {
bool handled = true;
IPC_BEGIN_MESSAGE_MAP(ChromeRenderViewHostObserver, message)
IPC_MESSAGE_HANDLER(ChromeViewHostMsg_FocusedEditableNodeTouched,
OnFocusedEditableNodeTouched)
IPC_MESSAGE_UNHANDLED(handled = false)
IPC_END_MESSAGE_MAP()
return handled;
}
void ChromeRenderViewHostObserver::InitRenderViewHostForExtensions() {
const Extension* extension = GetExtension();
if (!extension)
return;
ExtensionProcessManager* process_manager =
profile_->GetExtensionProcessManager();
CHECK(process_manager);
// TODO(creis): Use this to replace SetInstalledAppForRenderer.
process_manager->RegisterRenderViewHost(render_view_host(), extension);
if (extension->is_app()) {
// Record which, if any, installed app is associated with this process.
// TODO(aa): Totally lame to store this state in a global map in extension
// service. Can we get it from EPM instead?
profile_->GetExtensionService()->SetInstalledAppForRenderer(
render_view_host()->GetProcess()->GetID(), extension);
}
}
void ChromeRenderViewHostObserver::InitRenderViewForExtensions() {
const Extension* extension = GetExtension();
if (!extension)
return;
content::RenderProcessHost* process = render_view_host()->GetProcess();
if (extension->is_app()) {
// Though we already record the associated process ID for the renderer in
// InitRenderViewHostForExtensions, the process might have crashed and been
// restarted (hence the re-initialization), so we need to update that
// mapping.
profile_->GetExtensionService()->SetInstalledAppForRenderer(
process->GetID(), extension);
}
// Some extensions use chrome:// URLs.
Extension::Type type = extension->GetType();
if (type == Extension::TYPE_EXTENSION ||
type == Extension::TYPE_PACKAGED_APP) {
ChildProcessSecurityPolicy::GetInstance()->GrantScheme(
process->GetID(), chrome::kChromeUIScheme);
if (profile_->GetExtensionService()->extension_prefs()->AllowFileAccess(
extension->id())) {
ChildProcessSecurityPolicy::GetInstance()->GrantScheme(
process->GetID(), chrome::kFileScheme);
}
}
switch (type) {
case Extension::TYPE_EXTENSION:
case Extension::TYPE_USER_SCRIPT:
case Extension::TYPE_HOSTED_APP:
case Extension::TYPE_PACKAGED_APP:
case Extension::TYPE_PLATFORM_APP:
Send(new ExtensionMsg_ActivateExtension(extension->id()));
break;
case Extension::TYPE_UNKNOWN:
case Extension::TYPE_THEME:
break;
}
}
const Extension* ChromeRenderViewHostObserver::GetExtension() {
// Note that due to ChromeContentBrowserClient::GetEffectiveURL(), hosted apps
// (excluding bookmark apps) will have a chrome-extension:// URL for their
// site, so we can ignore that wrinkle here.
SiteInstance* site_instance = render_view_host()->GetSiteInstance();
const GURL& site = site_instance->GetSite();
if (!site.SchemeIs(chrome::kExtensionScheme))
return NULL;
ExtensionService* service = profile_->GetExtensionService();
if (!service)
return NULL;
// Reload the extension if it has crashed.
// TODO(yoz): This reload doesn't happen synchronously for unpacked
// extensions. It seems to be fast enough, but there is a race.
// We should delay loading until the extension has reloaded.
if (service->GetTerminatedExtension(site.host()))
service->ReloadExtension(site.host());
// May be null if the extension doesn't exist, for example if somebody typos
// a chrome-extension:// URL.
return service->extensions()->GetByID(site.host());
}
void ChromeRenderViewHostObserver::RemoveRenderViewHostForExtensions(
RenderViewHost* rvh) {
ExtensionProcessManager* process_manager =
profile_->GetExtensionProcessManager();
if (process_manager)
process_manager->UnregisterRenderViewHost(rvh);
}
void ChromeRenderViewHostObserver::OnFocusedEditableNodeTouched() {
content::NotificationService::current()->Notify(
chrome::NOTIFICATION_FOCUSED_EDITABLE_NODE_TOUCHED,
content::Source<RenderViewHost>(render_view_host()),
content::NotificationService::NoDetails());
}
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