cef/libcef/browser/extensions/extension_system.cc

718 lines
28 KiB
C++

// Copyright 2015 The Chromium Embedded Framework Authors.
// Portions 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 "libcef/browser/extensions/extension_system.h"
#include <string>
#include "libcef/browser/extension_impl.h"
#include "libcef/browser/extensions/value_store/cef_value_store_factory.h"
#include "libcef/browser/thread_util.h"
#include "libcef/common/extensions/extensions_util.h"
#include "base/bind.h"
#include "base/command_line.h"
#include "base/files/file_path.h"
#include "base/files/file_util.h"
#include "base/json/json_string_value_serializer.h"
#include "base/path_service.h"
#include "base/strings/string_tokenizer.h"
#include "base/strings/utf_string_conversions.h"
#include "base/threading/thread_restrictions.h"
#include "chrome/browser/pdf/pdf_extension_util.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/common/chrome_paths.h"
#include "components/crx_file/id_util.h"
#include "content/public/browser/browser_context.h"
#include "content/public/browser/browser_task_traits.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/notification_details.h"
#include "content/public/browser/notification_service.h"
#include "content/public/browser/notification_source.h"
#include "content/public/browser/plugin_service.h"
#include "content/public/browser/render_process_host.h"
#include "extensions/browser/api/app_runtime/app_runtime_api.h"
#include "extensions/browser/extension_prefs.h"
#include "extensions/browser/extension_registry.h"
#include "extensions/browser/info_map.h"
#include "extensions/browser/notification_types.h"
#include "extensions/browser/null_app_sorting.h"
#include "extensions/browser/quota_service.h"
#include "extensions/browser/renderer_startup_helper.h"
#include "extensions/browser/service_worker_manager.h"
#include "extensions/browser/state_store.h"
#include "extensions/browser/unloaded_extension_reason.h"
#include "extensions/common/constants.h"
#include "extensions/common/extension_messages.h"
#include "extensions/common/file_util.h"
#include "extensions/common/manifest_constants.h"
#include "extensions/common/manifest_handlers/mime_types_handler.h"
#include "extensions/common/switches.h"
#include "net/base/mime_util.h"
using content::BrowserContext;
namespace extensions {
namespace {
// Implementation based on ComponentLoader::ParseManifest.
std::unique_ptr<base::DictionaryValue> ParseManifest(
const std::string& manifest_contents) {
JSONStringValueDeserializer deserializer(manifest_contents);
std::unique_ptr<base::Value> manifest(
deserializer.Deserialize(nullptr, nullptr));
if (!manifest.get() || !manifest->is_dict()) {
LOG(ERROR) << "Failed to parse extension manifest.";
return nullptr;
}
// Transfer ownership to the caller.
return base::WrapUnique(
static_cast<base::DictionaryValue*>(manifest.release()));
}
void ExecuteLoadFailure(CefRefPtr<CefExtensionHandler> handler,
cef_errorcode_t result) {
if (!handler)
return;
if (!CEF_CURRENTLY_ON_UIT()) {
CEF_POST_TASK(CEF_UIT, base::BindOnce(ExecuteLoadFailure, handler, result));
return;
}
handler->OnExtensionLoadFailed(result);
}
void LoadExtensionOnUIThread(base::WeakPtr<CefExtensionSystem> context,
std::unique_ptr<base::DictionaryValue> manifest,
const base::FilePath& root_directory,
bool internal,
CefRefPtr<CefRequestContext> loader_context,
CefRefPtr<CefExtensionHandler> handler) {
if (!CEF_CURRENTLY_ON_UIT()) {
CEF_POST_TASK(CEF_UIT, base::BindOnce(LoadExtensionOnUIThread, context,
std::move(manifest), root_directory,
internal, loader_context, handler));
return;
}
if (context) {
context->LoadExtension(std::move(manifest), root_directory, internal,
loader_context, handler);
}
}
void LoadExtensionWithManifest(base::WeakPtr<CefExtensionSystem> context,
const std::string& manifest_contents,
const base::FilePath& root_directory,
bool internal,
CefRefPtr<CefRequestContext> loader_context,
CefRefPtr<CefExtensionHandler> handler) {
CEF_REQUIRE_BLOCKING();
std::unique_ptr<base::DictionaryValue> manifest =
ParseManifest(manifest_contents);
if (!manifest) {
LOG(WARNING) << "Failed to parse extension manifest";
ExecuteLoadFailure(handler, ERR_INVALID_ARGUMENT);
return;
}
LoadExtensionOnUIThread(context, std::move(manifest), root_directory,
internal, loader_context, handler);
}
void LoadExtensionFromDisk(base::WeakPtr<CefExtensionSystem> context,
const base::FilePath& root_directory,
bool internal,
CefRefPtr<CefRequestContext> loader_context,
CefRefPtr<CefExtensionHandler> handler) {
CEF_REQUIRE_BLOCKING();
base::FilePath manifest_path = root_directory.AppendASCII("manifest.json");
std::string manifest_contents;
if (!base::ReadFileToString(manifest_path, &manifest_contents)) {
LOG(WARNING) << "Failed to read extension manifest from "
<< manifest_path.MaybeAsASCII();
ExecuteLoadFailure(handler, ERR_FILE_NOT_FOUND);
return;
}
LoadExtensionWithManifest(context, manifest_contents, root_directory,
internal, loader_context, handler);
}
} // namespace
CefExtensionSystem::CefExtensionSystem(BrowserContext* browser_context)
: browser_context_(browser_context),
initialized_(false),
registry_(ExtensionRegistry::Get(browser_context)),
renderer_helper_(
extensions::RendererStartupHelperFactory::GetForBrowserContext(
browser_context)),
weak_ptr_factory_(this) {
InitPrefs();
}
CefExtensionSystem::~CefExtensionSystem() {}
void CefExtensionSystem::Init() {
DCHECK(!initialized_);
// There's complexity here related to the ordering of message delivery. For
// an extension to load correctly both the ExtensionMsg_Loaded and
// ExtensionMsg_ActivateExtension messages must be sent. These messages are
// currently sent by RendererStartupHelper, ExtensionWebContentsObserver, and
// this class. ExtensionMsg_Loaded is handled by Dispatcher::OnLoaded and adds
// the extension to |extensions_|. ExtensionMsg_ActivateExtension is handled
// by Dispatcher::OnActivateExtension and adds the extension to
// |active_extension_ids_|. If these messages are not sent correctly then
// ScriptContextSet::Register called from Dispatcher::DidCreateScriptContext
// will classify the extension incorrectly and API bindings will not be added.
// Inform the rest of the extensions system to start.
ready_.Signal();
// Add the internal PDF extension. PDF loading works as follows:
// 1. The PDF plugin is registered in libcef/common/content_client.cc
// ComputeBuiltInPlugins to handle the pdf::kInternalPluginMimeType.
// 2. The PDF extension is registered by the below call to AddExtension and
// associated with the "application/pdf" mime type.
// 3. Web content running in the owner CefBrowser requests to load a PDF file
// resource with the "application/pdf" mime type. This can be via a frame
// (main frame/iframe) or object/embed tag.
// 4. PluginResponseInterceptorURLLoaderThrottle intercepts the PDF resource
// load in the browser process and registers the PDF resource as a stream
// via MimeHandlerStreamManager::AddStream.
// 5. PluginResponseInterceptorURLLoaderThrottle::WillProcessResponse triggers
// creation of a MimeHandlerViewEmbedder in the browser process via
// MimeHandlerViewAttachHelper::OverrideBodyForInterceptedResponse.
// 6. MimeHandlerViewEmbedder::ReadyToCommitNavigation is called and sends a
// Mojo message to MimeHandlerViewContainerManager::SetInternalId in the
// owner renderer process.
// 7. The MimeHandlerViewContainerManager is created in the owner renderer
// process via MimeHandlerViewContainerManager::BindReceiver and the
// SetInternalId call arrives.
// 8. HTMLPlugInElement::RequestObject is called in the owner renderer process
// to handle the PDF file frame/object/embed tag. This results in calls to
// ContentBrowserClient::GetPluginMimeTypesWithExternalHandlers (browser
// process) and ContentRendererClient::IsPluginHandledExternally (owner
// renderer process), and determines that the plugin should be handled
// externally (handled_externally=true).
// 9. MimeHandlerViewContainerManager::IsManagedByContainerManager sends a
// Mojo message to MimeHandlerViewEmbedder::ReadyToCreateMimeHandlerView
// in the browser process.
// 10.MimeHandlerViewEmbedder::RenderFrameCreated triggers creation of a
// MimeHandlerViewGuest and CefMimeHandlerViewGuestDelegate in the browser
// process.
// 11.MimeHandlerViewGuest::CreateWebContents creates a new guest WebContents
// (is_guest_view=true) to host the PDF extension and the PDF resource
// stream is retrieved via MimeHandlerStreamManager::ReleaseStream.
// 12.MimeHandlerViewGuest::DidAttachToEmbedder calls
// CefMimeHandlerViewGuestDelegate::OnGuestAttached to associate the guest
// WebContents routing IDs with the owner CefBrowser. MimeHandlerViewGuest
// then loads the extension URL (index.html) in the guest WebContents.
// 13.Creation of the RenderFrame in the guest renderer process triggers a
// sync IPC call from AlloyContentRendererClient::MaybeCreateBrowser to
// CefBrowserInfoManager::GetBrowserInfo in the browser process to retrieve
// the CefBrowser information, which will be immediately available due to
// step 12.
// 14.The PDF extension begins to load. Extension resource requests are
// handled via ExtensionURLLoaderFactory::CreateLoaderAndStart in the
// browser process. Access to PDF extension resources is checked by
// CefExtensionsBrowserClient::AllowCrossRendererResourceLoad and
// PDF extension resources are provided from bundle via
// CefExtensionsBrowserClient::LoadResourceFromResourceBundle
// and CefComponentExtensionResourceManager. Access to chrome://resources
// is granted via CefExtensionWebContentsObserver::RenderViewCreated.
// 15.The PDF extension requests the PDF plugin to handle
// pdf::kInternalPluginMimeType. Approval arrives in the guest renderer
// process via ExtensionFrameHelper::OnExtensionResponse which calls
// NativeExtensionBindingsSystem::HandleResponse. This triggers creation of
// an HTMLPlugInElement via native V8 bindings to host the PDF plugin.
// 16.- With the old PPAPI plugin:
// The PDF extension calls chrome.mimeHandlerPrivate.getStreamInfo
// (chrome/browser/resources/pdf/browser_api.js) to retrieve the PDF
// resource stream. This API is implemented using Mojo as described in
// libcef/common/extensions/api/README.txt.
// - With the new PdfUnseasoned plugin:
// The PDF resource navigation is redirected by PdfNavigationThrottle and
// the stream contents are replaced by PdfURLLoaderRequestInterceptor.
// 17.HTMLPlugInElement::RequestObject is called in the guest renderer process
// and determines that the PDF plugin should be handled internally
// (handled_externally=false). A PluginDocument is created and
// AlloyContentRendererClient::OverrideCreatePlugin is called to create a
// WebPlugin.
// 18.- With the old PPAPI plugin:
// The PDF plugin is loaded by ChromeContentRendererClient::CreatePlugin
// calling RenderFrameImpl::CreatePlugin.
// - With the new PdfUnseasoned plugin:
// The PDF plugin is loaded by ChromeContentRendererClient::CreatePlugin
// calling pdf::CreateInternalPlugin.
// 19.The PDF extension and PDF plugin are now loaded. Print commands, if
// any, are handled in the guest renderer process by ChromePDFPrintClient
// and CefPrintRenderFrameHelperDelegate.
// 20.When navigating away from the PDF file or closing the owner CefBrowser
// the guest WebContents will be destroyed. This triggers a call to
// CefMimeHandlerViewGuestDelegate::OnGuestDetached which removes the
// routing ID association with the owner CefBrowser.
if (PdfExtensionEnabled()) {
LoadExtension(ParseManifest(pdf_extension_util::GetManifest()),
base::FilePath(FILE_PATH_LITERAL("pdf")), true /* internal */,
nullptr, nullptr);
}
initialized_ = true;
}
void CefExtensionSystem::LoadExtension(
const base::FilePath& root_directory,
bool internal,
CefRefPtr<CefRequestContext> loader_context,
CefRefPtr<CefExtensionHandler> handler) {
CEF_REQUIRE_UIT();
CEF_POST_USER_VISIBLE_TASK(
base::BindOnce(LoadExtensionFromDisk, weak_ptr_factory_.GetWeakPtr(),
root_directory, internal, loader_context, handler));
}
void CefExtensionSystem::LoadExtension(
const std::string& manifest_contents,
const base::FilePath& root_directory,
bool internal,
CefRefPtr<CefRequestContext> loader_context,
CefRefPtr<CefExtensionHandler> handler) {
CEF_REQUIRE_UIT();
CEF_POST_USER_VISIBLE_TASK(base::BindOnce(
LoadExtensionWithManifest, weak_ptr_factory_.GetWeakPtr(),
manifest_contents, root_directory, internal, loader_context, handler));
}
// Implementation based on ComponentLoader::Add.
void CefExtensionSystem::LoadExtension(
std::unique_ptr<base::DictionaryValue> manifest,
const base::FilePath& root_directory,
bool internal,
CefRefPtr<CefRequestContext> loader_context,
CefRefPtr<CefExtensionHandler> handler) {
CEF_REQUIRE_UIT();
// Internal extensions don't have a loader context. External extensions should.
#if DCHECK_IS_ON()
if (internal) {
DCHECK(!loader_context);
} else {
DCHECK(loader_context);
}
#endif
ComponentExtensionInfo info(manifest.get(), root_directory, internal);
const Extension* extension = LoadExtension(info, loader_context, handler);
if (!extension)
ExecuteLoadFailure(handler, ERR_FAILED);
}
// Implementation based on ExtensionService::RemoveComponentExtension.
bool CefExtensionSystem::UnloadExtension(const std::string& extension_id) {
CEF_REQUIRE_UIT();
ExtensionMap::iterator it = extension_map_.find(extension_id);
if (it == extension_map_.end()) {
// No CEF representation so we've already unloaded it.
return false;
}
CefRefPtr<CefExtensionImpl> cef_extension =
static_cast<CefExtensionImpl*>(it->second.get());
// Erase first so that callbacks can't retrieve the unloaded extension.
extension_map_.erase(it);
cef_extension->OnExtensionUnloaded();
scoped_refptr<const Extension> extension(
registry_->GetInstalledExtension(extension_id));
UnloadExtension(extension_id, UnloadedExtensionReason::UNINSTALL);
if (extension.get()) {
registry_->TriggerOnUninstalled(
extension.get(), extensions::UNINSTALL_REASON_COMPONENT_REMOVED);
}
return true;
}
bool CefExtensionSystem::HasExtension(const std::string& extension_id) const {
return !!GetExtension(extension_id);
}
CefRefPtr<CefExtension> CefExtensionSystem::GetExtension(
const std::string& extension_id) const {
CEF_REQUIRE_UIT();
ExtensionMap::const_iterator it = extension_map_.find(extension_id);
if (it != extension_map_.end())
return it->second;
return nullptr;
}
CefExtensionSystem::ExtensionMap CefExtensionSystem::GetExtensions() const {
CEF_REQUIRE_UIT();
return extension_map_;
}
void CefExtensionSystem::OnRequestContextDeleted(CefRequestContext* context) {
CEF_REQUIRE_UIT();
DCHECK(context);
// Make a copy of the map because UnloadExtension will modify it.
// Don't add any references to |context|.
ExtensionMap map = extension_map_;
ExtensionMap::const_iterator it = map.begin();
for (; it != map.end(); ++it) {
CefRefPtr<CefExtensionImpl> cef_extension =
static_cast<CefExtensionImpl*>(it->second.get());
if (cef_extension->loader_context() == context)
UnloadExtension(it->first);
}
}
void CefExtensionSystem::Shutdown() {
CEF_REQUIRE_UIT();
// Only internal extensions should exist at this point.
#if DCHECK_IS_ON()
ExtensionMap::iterator it = extension_map_.begin();
for (; it != extension_map_.end(); ++it) {
CefRefPtr<CefExtensionImpl> cef_extension =
static_cast<CefExtensionImpl*>(it->second.get());
DCHECK(!cef_extension->loader_context());
}
#endif
extension_map_.clear();
}
void CefExtensionSystem::InitForRegularProfile(bool extensions_enabled) {
DCHECK(!initialized_);
service_worker_manager_.reset(new ServiceWorkerManager(browser_context_));
quota_service_.reset(new QuotaService);
app_sorting_.reset(new NullAppSorting);
}
ExtensionService* CefExtensionSystem::extension_service() {
return nullptr;
}
ManagementPolicy* CefExtensionSystem::management_policy() {
return nullptr;
}
ServiceWorkerManager* CefExtensionSystem::service_worker_manager() {
return service_worker_manager_.get();
}
UserScriptManager* CefExtensionSystem::user_script_manager() {
return nullptr;
}
StateStore* CefExtensionSystem::state_store() {
return state_store_.get();
}
StateStore* CefExtensionSystem::rules_store() {
return rules_store_.get();
}
StateStore* CefExtensionSystem::dynamic_user_scripts_store() {
return nullptr;
}
scoped_refptr<value_store::ValueStoreFactory>
CefExtensionSystem::store_factory() {
return store_factory_;
}
InfoMap* CefExtensionSystem::info_map() {
if (!info_map_.get())
info_map_ = new InfoMap;
return info_map_.get();
}
QuotaService* CefExtensionSystem::quota_service() {
return quota_service_.get();
}
AppSorting* CefExtensionSystem::app_sorting() {
return app_sorting_.get();
}
// Implementation based on
// ExtensionSystemImpl::RegisterExtensionWithRequestContexts.
void CefExtensionSystem::RegisterExtensionWithRequestContexts(
const Extension* extension,
base::OnceClosure callback) {
// TODO(extensions): The |incognito_enabled| value should be set based on
// manifest settings.
content::GetIOThreadTaskRunner({})->PostTaskAndReply(
FROM_HERE,
base::BindOnce(&InfoMap::AddExtension, info_map(),
base::RetainedRef(extension), base::Time::Now(),
true, // incognito_enabled
false), // notifications_disabled
std::move(callback));
}
// Implementation based on
// ExtensionSystemImpl::UnregisterExtensionWithRequestContexts.
void CefExtensionSystem::UnregisterExtensionWithRequestContexts(
const std::string& extension_id) {
content::GetIOThreadTaskRunner({})->PostTask(
FROM_HERE,
base::BindOnce(&InfoMap::RemoveExtension, info_map(), extension_id));
}
const base::OneShotEvent& CefExtensionSystem::ready() const {
return ready_;
}
bool CefExtensionSystem::is_ready() const {
return ready_.is_signaled();
}
ContentVerifier* CefExtensionSystem::content_verifier() {
return nullptr;
}
std::unique_ptr<ExtensionSet> CefExtensionSystem::GetDependentExtensions(
const Extension* extension) {
return std::make_unique<ExtensionSet>();
}
void CefExtensionSystem::InstallUpdate(
const std::string& extension_id,
const std::string& public_key,
const base::FilePath& temp_dir,
bool install_immediately,
InstallUpdateCallback install_update_callback) {
NOTREACHED();
base::DeletePathRecursively(temp_dir);
}
void CefExtensionSystem::PerformActionBasedOnOmahaAttributes(
const std::string& extension_id,
const base::Value& attributes) {
NOTREACHED();
}
bool CefExtensionSystem::FinishDelayedInstallationIfReady(
const std::string& extension_id,
bool install_immediately) {
NOTREACHED();
return false;
}
CefExtensionSystem::ComponentExtensionInfo::ComponentExtensionInfo(
const base::DictionaryValue* manifest,
const base::FilePath& directory,
bool internal)
: manifest(manifest), root_directory(directory), internal(internal) {
if (!root_directory.IsAbsolute()) {
// This path structure is required by
// url_request_util::MaybeCreateURLRequestResourceBundleJob.
CHECK(base::PathService::Get(chrome::DIR_RESOURCES, &root_directory));
root_directory = root_directory.Append(directory);
}
}
void CefExtensionSystem::InitPrefs() {
store_factory_ =
new value_store::CefValueStoreFactory(browser_context_->GetPath());
Profile* profile = Profile::FromBrowserContext(browser_context_);
// Two state stores. The latter, which contains declarative rules, must be
// loaded immediately so that the rules are ready before we issue network
// requests.
state_store_ = std::make_unique<StateStore>(
profile, store_factory_, StateStore::BackendType::STATE, true);
rules_store_ = std::make_unique<StateStore>(
profile, store_factory_, StateStore::BackendType::RULES, false);
}
// Implementation based on ComponentLoader::CreateExtension.
scoped_refptr<const Extension> CefExtensionSystem::CreateExtension(
const ComponentExtensionInfo& info,
std::string* utf8_error) {
// TODO(abarth): We should REQUIRE_MODERN_MANIFEST_VERSION once we've updated
// our component extensions to the new manifest version.
int flags = 0;
if (info.internal) {
// Internal extensions must have kPublicKey in the manifest.
flags |= Extension::REQUIRE_KEY;
}
return Extension::Create(
info.root_directory,
// Tests should continue to use the Manifest::COMMAND_LINE value here
// Some Chrome APIs will cause undesired effects if this is incorrect
// e.g.: alarms API has 1 minute minimum applied to Packed Extensions
info.internal ? mojom::ManifestLocation::kComponent
: mojom::ManifestLocation::kCommandLine,
*info.manifest, flags, utf8_error);
}
// Implementation based on ComponentLoader::Load and
// ExtensionService::AddExtension.
const Extension* CefExtensionSystem::LoadExtension(
const ComponentExtensionInfo& info,
CefRefPtr<CefRequestContext> loader_context,
CefRefPtr<CefExtensionHandler> handler) {
std::string error;
scoped_refptr<const Extension> extension(CreateExtension(info, &error));
if (!extension.get()) {
LOG(ERROR) << error;
return nullptr;
}
if (registry_->GetInstalledExtension(extension->id())) {
LOG(ERROR) << "Extension with id " << extension->id()
<< "is already installed";
return nullptr;
}
CefRefPtr<CefExtensionImpl> cef_extension =
new CefExtensionImpl(extension.get(), loader_context.get(), handler);
// Insert first so that callbacks can retrieve the loaded extension.
extension_map_.insert(std::make_pair(extension->id(), cef_extension));
// This may trigger additional callbacks.
registry_->AddEnabled(extension.get());
NotifyExtensionLoaded(extension.get());
cef_extension->OnExtensionLoaded();
return extension.get();
}
// Implementation based on ExtensionService::UnloadExtension.
void CefExtensionSystem::UnloadExtension(const std::string& extension_id,
UnloadedExtensionReason reason) {
// Make sure the extension gets deleted after we return from this function.
int include_mask =
ExtensionRegistry::EVERYTHING & ~ExtensionRegistry::TERMINATED;
scoped_refptr<const Extension> extension(
registry_->GetExtensionById(extension_id, include_mask));
// This method can be called via PostTask, so the extension may have been
// unloaded by the time this runs.
if (!extension.get()) {
// In case the extension may have crashed/uninstalled. Allow the profile to
// clean up its RequestContexts.
UnregisterExtensionWithRequestContexts(extension_id);
return;
}
if (registry_->disabled_extensions().Contains(extension->id())) {
registry_->RemoveDisabled(extension->id());
// Make sure the profile cleans up its RequestContexts when an already
// disabled extension is unloaded (since they are also tracking the disabled
// extensions).
UnregisterExtensionWithRequestContexts(extension_id);
// Don't send the unloaded notification. It was sent when the extension
// was disabled.
} else {
// Remove the extension from the enabled list.
registry_->RemoveEnabled(extension->id());
NotifyExtensionUnloaded(extension.get(), reason);
}
}
// Implementation based on ExtensionService::NotifyExtensionLoaded.
void CefExtensionSystem::NotifyExtensionLoaded(const Extension* extension) {
// The URLRequestContexts need to be first to know that the extension
// was loaded, otherwise a race can arise where a renderer that is created
// for the extension may try to load an extension URL with an extension id
// that the request context doesn't yet know about. The profile is responsible
// for ensuring its URLRequestContexts appropriately discover the loaded
// extension.
RegisterExtensionWithRequestContexts(
extension,
base::BindOnce(
&CefExtensionSystem::OnExtensionRegisteredWithRequestContexts,
weak_ptr_factory_.GetWeakPtr(), base::WrapRefCounted(extension)));
// Tell renderers about the loaded extension.
renderer_helper_->OnExtensionLoaded(*extension);
// Tell subsystems that use the ExtensionRegistryObserver::OnExtensionLoaded
// about the new extension.
//
// NOTE: It is important that this happen after notifying the renderers about
// the new extensions so that if we navigate to an extension URL in
// ExtensionRegistryObserver::OnExtensionLoaded the renderer is guaranteed to
// know about it.
registry_->TriggerOnLoaded(extension);
// Register plugins included with the extension.
// Implementation based on PluginManager::OnExtensionLoaded.
const MimeTypesHandler* handler = MimeTypesHandler::GetHandler(extension);
if (handler && !handler->handler_url().empty()) {
content::WebPluginInfo info;
info.type = content::WebPluginInfo::PLUGIN_TYPE_BROWSER_PLUGIN;
info.name = base::UTF8ToUTF16(extension->name());
info.path = base::FilePath::FromUTF8Unsafe(extension->url().spec());
for (std::set<std::string>::const_iterator mime_type =
handler->mime_type_set().begin();
mime_type != handler->mime_type_set().end(); ++mime_type) {
content::WebPluginMimeType mime_type_info;
mime_type_info.mime_type = *mime_type;
base::FilePath::StringType file_extension;
if (net::GetPreferredExtensionForMimeType(*mime_type, &file_extension)) {
mime_type_info.file_extensions.push_back(
base::FilePath(file_extension).AsUTF8Unsafe());
}
info.mime_types.push_back(mime_type_info);
}
content::PluginService* plugin_service =
content::PluginService::GetInstance();
plugin_service->RefreshPlugins();
plugin_service->RegisterInternalPlugin(info, true);
}
}
void CefExtensionSystem::OnExtensionRegisteredWithRequestContexts(
scoped_refptr<const extensions::Extension> extension) {
registry_->AddReady(extension);
if (registry_->enabled_extensions().Contains(extension->id()))
registry_->TriggerOnReady(extension.get());
}
// Implementation based on ExtensionService::NotifyExtensionUnloaded.
void CefExtensionSystem::NotifyExtensionUnloaded(
const Extension* extension,
UnloadedExtensionReason reason) {
// Unregister plugins included with the extension.
// Implementation based on PluginManager::OnExtensionUnloaded.
const MimeTypesHandler* handler = MimeTypesHandler::GetHandler(extension);
if (handler && !handler->handler_url().empty()) {
base::FilePath path =
base::FilePath::FromUTF8Unsafe(extension->url().spec());
content::PluginService* plugin_service =
content::PluginService::GetInstance();
plugin_service->UnregisterInternalPlugin(path);
plugin_service->RefreshPlugins();
}
registry_->TriggerOnUnloaded(extension, reason);
// Tell renderers about the unloaded extension.
renderer_helper_->OnExtensionUnloaded(*extension);
UnregisterExtensionWithRequestContexts(extension->id());
}
} // namespace extensions