| // 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_web_contents_observer.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 "content/public/common/url_constants.h" |
| #include "extensions/browser/extension_prefs.h" |
| #include "extensions/browser/extension_registry.h" |
| #include "extensions/browser/view_type_utils.h" |
| #include "extensions/common/constants.h" |
| #include "extensions/common/extension_messages.h" |
| |
| namespace extensions { |
| |
| ExtensionWebContentsObserver::ExtensionWebContentsObserver( |
| content::WebContents* web_contents) |
| : content::WebContentsObserver(web_contents), |
| browser_context_(web_contents->GetBrowserContext()) { |
| NotifyRenderViewType(web_contents->GetRenderViewHost()); |
| } |
| |
| ExtensionWebContentsObserver::~ExtensionWebContentsObserver() {} |
| |
| void ExtensionWebContentsObserver::RenderViewCreated( |
| content::RenderViewHost* render_view_host) { |
| NotifyRenderViewType(render_view_host); |
| |
| 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(), content::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(), url::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; |
| |
| case Manifest::NUM_LOAD_TYPES: |
| NOTREACHED(); |
| } |
| } |
| |
| void ExtensionWebContentsObserver::NotifyRenderViewType( |
| content::RenderViewHost* render_view_host) { |
| if (render_view_host) { |
| render_view_host->Send(new ExtensionMsg_NotifyRenderViewType( |
| render_view_host->GetRoutingID(), GetViewType(web_contents()))); |
| } |
| } |
| |
| const Extension* ExtensionWebContentsObserver::GetExtension( |
| content::RenderViewHost* render_view_host) { |
| std::string extension_id = GetExtensionId(render_view_host); |
| if (extension_id.empty()) |
| return NULL; |
| |
| // May be null if the extension doesn't exist, for example if somebody typos |
| // a chrome-extension:// URL. |
| return ExtensionRegistry::Get(browser_context_) |
| ->GetExtensionById(extension_id, ExtensionRegistry::ENABLED); |
| } |
| |
| // static |
| std::string ExtensionWebContentsObserver::GetExtensionId( |
| 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. |
| const GURL& site = render_view_host->GetSiteInstance()->GetSiteURL(); |
| |
| if (!site.SchemeIs(kExtensionScheme)) |
| return std::string(); |
| |
| return site.host(); |
| } |
| |
| } // namespace extensions |