1 // Copyright 2013 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #include "chrome/browser/extensions/extension_web_contents_observer.h"
7 #include "chrome/browser/extensions/api/messaging/message_service.h"
8 #include "chrome/browser/extensions/extension_service.h"
9 #include "chrome/browser/extensions/extension_system.h"
10 #include "chrome/browser/profiles/profile.h"
11 #include "chrome/common/extensions/api/messaging/message.h"
12 #include "chrome/common/extensions/extension_messages.h"
13 #include "chrome/common/url_constants.h"
14 #include "content/public/browser/child_process_security_policy.h"
15 #include "content/public/browser/render_process_host.h"
16 #include "content/public/browser/render_view_host.h"
17 #include "content/public/browser/site_instance.h"
18 #include "content/public/browser/web_contents.h"
19 #include "extensions/browser/view_type_utils.h"
20 #include "extensions/common/constants.h"
22 DEFINE_WEB_CONTENTS_USER_DATA_KEY(extensions::ExtensionWebContentsObserver);
24 namespace extensions {
26 ExtensionWebContentsObserver::ExtensionWebContentsObserver(
27 content::WebContents* web_contents)
28 : content::WebContentsObserver(web_contents),
29 profile_(Profile::FromBrowserContext(web_contents->GetBrowserContext())) {
32 ExtensionWebContentsObserver::~ExtensionWebContentsObserver() {
35 void ExtensionWebContentsObserver::RenderViewCreated(
36 content::RenderViewHost* render_view_host) {
37 render_view_host->Send(new ExtensionMsg_NotifyRenderViewType(
38 render_view_host->GetRoutingID(),
39 extensions::GetViewType(web_contents())));
41 const Extension* extension = GetExtension(render_view_host);
45 content::RenderProcessHost* process = render_view_host->GetProcess();
47 // Some extensions use chrome:// URLs.
48 // This is a temporary solution. Replace it with access to chrome-static://
49 // once it is implemented. See: crbug.com/226927.
50 Manifest::Type type = extension->GetType();
51 if (type == Manifest::TYPE_EXTENSION ||
52 type == Manifest::TYPE_LEGACY_PACKAGED_APP ||
53 (type == Manifest::TYPE_PLATFORM_APP &&
54 extension->location() == Manifest::COMPONENT)) {
55 content::ChildProcessSecurityPolicy::GetInstance()->GrantScheme(
56 process->GetID(), chrome::kChromeUIScheme);
59 // Some extensions use file:// URLs.
60 if (type == Manifest::TYPE_EXTENSION ||
61 type == Manifest::TYPE_LEGACY_PACKAGED_APP) {
62 if (ExtensionSystem::Get(profile_)->extension_service()->
63 extension_prefs()->AllowFileAccess(extension->id())) {
64 content::ChildProcessSecurityPolicy::GetInstance()->GrantScheme(
65 process->GetID(), chrome::kFileScheme);
70 case Manifest::TYPE_EXTENSION:
71 case Manifest::TYPE_USER_SCRIPT:
72 case Manifest::TYPE_HOSTED_APP:
73 case Manifest::TYPE_LEGACY_PACKAGED_APP:
74 case Manifest::TYPE_PLATFORM_APP:
75 // Always send a Loaded message before ActivateExtension so that
76 // ExtensionDispatcher knows what Extension is active, not just its ID.
77 // This is important for classifying the Extension's JavaScript context
78 // correctly (see ExtensionDispatcher::ClassifyJavaScriptContext).
79 render_view_host->Send(new ExtensionMsg_Loaded(
80 std::vector<ExtensionMsg_Loaded_Params>(
81 1, ExtensionMsg_Loaded_Params(extension))));
82 render_view_host->Send(
83 new ExtensionMsg_ActivateExtension(extension->id()));
86 case Manifest::TYPE_UNKNOWN:
87 case Manifest::TYPE_THEME:
88 case Manifest::TYPE_SHARED_MODULE:
93 bool ExtensionWebContentsObserver::OnMessageReceived(
94 const IPC::Message& message) {
96 IPC_BEGIN_MESSAGE_MAP(ExtensionWebContentsObserver, message)
97 IPC_MESSAGE_HANDLER(ExtensionHostMsg_PostMessage, OnPostMessage)
98 IPC_MESSAGE_UNHANDLED(handled = false)
103 void ExtensionWebContentsObserver::OnPostMessage(int port_id,
104 const Message& message) {
105 MessageService* message_service = MessageService::Get(profile_);
106 if (message_service) {
107 message_service->PostMessage(port_id, message);
111 const Extension* ExtensionWebContentsObserver::GetExtension(
112 content::RenderViewHost* render_view_host) {
113 // Note that due to ChromeContentBrowserClient::GetEffectiveURL(), hosted apps
114 // (excluding bookmark apps) will have a chrome-extension:// URL for their
115 // site, so we can ignore that wrinkle here.
116 content::SiteInstance* site_instance = render_view_host->GetSiteInstance();
117 const GURL& site = site_instance->GetSiteURL();
119 if (!site.SchemeIs(kExtensionScheme))
122 ExtensionService* service = profile_->GetExtensionService();
126 // Reload the extension if it has crashed.
127 // TODO(yoz): This reload doesn't happen synchronously for unpacked
128 // extensions. It seems to be fast enough, but there is a race.
129 // We should delay loading until the extension has reloaded.
130 if (service->GetTerminatedExtension(site.host()))
131 service->ReloadExtension(site.host());
133 // May be null if the extension doesn't exist, for example if somebody typos
134 // a chrome-extension:// URL.
135 return service->extensions()->GetByID(site.host());
138 } // namespace extensions