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// Copyright 2013 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/extensions/extension_web_contents_observer.h"
#include "chrome/browser/extensions/api/messaging/message_service.h"
#include "chrome/browser/extensions/error_console/error_console.h"
#include "chrome/browser/extensions/extension_service.h"
#include "chrome/common/extensions/api/messaging/message.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/render_process_host.h"
#include "content/public/browser/render_view_host.h"
#include "content/public/browser/site_instance.h"
#include "content/public/browser/web_contents.h"
#include "extensions/browser/extension_registry.h"
#include "extensions/browser/extension_system.h"
#include "extensions/browser/view_type_utils.h"
#include "extensions/common/constants.h"
#include "extensions/common/extension_urls.h"
DEFINE_WEB_CONTENTS_USER_DATA_KEY(extensions::ExtensionWebContentsObserver);
namespace extensions {
ExtensionWebContentsObserver::ExtensionWebContentsObserver(
content::WebContents* web_contents)
: content::WebContentsObserver(web_contents),
browser_context_(web_contents->GetBrowserContext()) {
}
ExtensionWebContentsObserver::~ExtensionWebContentsObserver() {
}
void ExtensionWebContentsObserver::RenderViewCreated(
content::RenderViewHost* render_view_host) {
render_view_host->Send(new ExtensionMsg_NotifyRenderViewType(
render_view_host->GetRoutingID(),
GetViewType(web_contents())));
const Extension* extension = GetExtension(render_view_host);
if (!extension)
return;
content::RenderProcessHost* process = render_view_host->GetProcess();
// Some extensions use chrome:// URLs.
// This is a temporary solution. Replace it with access to chrome-static://
// once it is implemented. See: crbug.com/226927.
Manifest::Type type = extension->GetType();
if (type == Manifest::TYPE_EXTENSION ||
type == Manifest::TYPE_LEGACY_PACKAGED_APP ||
(type == Manifest::TYPE_PLATFORM_APP &&
extension->location() == Manifest::COMPONENT)) {
content::ChildProcessSecurityPolicy::GetInstance()->GrantScheme(
process->GetID(), chrome::kChromeUIScheme);
}
// Some extensions use file:// URLs.
if (type == Manifest::TYPE_EXTENSION ||
type == Manifest::TYPE_LEGACY_PACKAGED_APP) {
ExtensionPrefs* prefs = ExtensionPrefs::Get(browser_context_);
if (prefs->AllowFileAccess(extension->id())) {
content::ChildProcessSecurityPolicy::GetInstance()->GrantScheme(
process->GetID(), content::kFileScheme);
}
}
switch (type) {
case Manifest::TYPE_EXTENSION:
case Manifest::TYPE_USER_SCRIPT:
case Manifest::TYPE_HOSTED_APP:
case Manifest::TYPE_LEGACY_PACKAGED_APP:
case Manifest::TYPE_PLATFORM_APP:
// Always send a Loaded message before ActivateExtension so that
// ExtensionDispatcher knows what Extension is active, not just its ID.
// This is important for classifying the Extension's JavaScript context
// correctly (see ExtensionDispatcher::ClassifyJavaScriptContext).
render_view_host->Send(new ExtensionMsg_Loaded(
std::vector<ExtensionMsg_Loaded_Params>(
1, ExtensionMsg_Loaded_Params(extension))));
render_view_host->Send(
new ExtensionMsg_ActivateExtension(extension->id()));
break;
case Manifest::TYPE_UNKNOWN:
case Manifest::TYPE_THEME:
case Manifest::TYPE_SHARED_MODULE:
break;
}
}
bool ExtensionWebContentsObserver::OnMessageReceived(
const IPC::Message& message) {
bool handled = true;
IPC_BEGIN_MESSAGE_MAP(ExtensionWebContentsObserver, message)
IPC_MESSAGE_HANDLER(ExtensionHostMsg_PostMessage, OnPostMessage)
IPC_MESSAGE_HANDLER(ChromeViewHostMsg_DetailedConsoleMessageAdded,
OnDetailedConsoleMessageAdded)
IPC_MESSAGE_UNHANDLED(handled = false)
IPC_END_MESSAGE_MAP()
return handled;
}
void ExtensionWebContentsObserver::OnDetailedConsoleMessageAdded(
const base::string16& message,
const base::string16& source,
const StackTrace& stack_trace,
int32 severity_level) {
if (IsSourceFromAnExtension(source)) {
content::RenderViewHost* rvh = web_contents()->GetRenderViewHost();
ErrorConsole::Get(Profile::FromBrowserContext(browser_context_))->
ReportError(
scoped_ptr<ExtensionError>(new RuntimeError(
std::string(),
browser_context_->IsOffTheRecord(),
source,
message,
stack_trace,
web_contents() ?
web_contents()->GetLastCommittedURL() : GURL::EmptyGURL(),
static_cast<logging::LogSeverity>(severity_level),
rvh->GetRoutingID(),
rvh->GetProcess()->GetID())));
}
}
void ExtensionWebContentsObserver::OnPostMessage(int port_id,
const Message& message) {
MessageService* message_service = MessageService::Get(browser_context_);
if (message_service) {
message_service->PostMessage(port_id, message);
}
}
const Extension* ExtensionWebContentsObserver::GetExtension(
content::RenderViewHost* render_view_host) {
// 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.
content::SiteInstance* site_instance = render_view_host->GetSiteInstance();
const GURL& site = site_instance->GetSiteURL();
if (!site.SchemeIs(kExtensionScheme))
return NULL;
std::string extension_id = site.host();
ExtensionRegistry* registry = ExtensionRegistry::Get(browser_context_);
// 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 (registry->GetExtensionById(extension_id, ExtensionRegistry::TERMINATED)) {
ExtensionSystem::Get(browser_context_)->
extension_service()->ReloadExtension(extension_id);
}
// May be null if the extension doesn't exist, for example if somebody typos
// a chrome-extension:// URL.
return registry->enabled_extensions().GetByID(extension_id);
}
} // namespace extensions
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