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// Copyright (c) 2006-2008 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/extensions_service.h"
#include "base/file_util.h"
#include "base/values.h"
#include "base/string_util.h"
#include "base/thread.h"
#include "chrome/browser/browser_process.h"
#include "chrome/common/json_value_serializer.h"
// ExtensionsService
const FilePath::CharType* ExtensionsService::kInstallDirectoryName =
FILE_PATH_LITERAL("Extensions");
ExtensionsService::ExtensionsService(const FilePath& profile_directory)
: message_loop_(MessageLoop::current()),
backend_(new ExtensionsServiceBackend),
install_directory_(profile_directory.Append(kInstallDirectoryName)) {
}
ExtensionsService::~ExtensionsService() {
for (ExtensionList::iterator iter = extensions_.begin();
iter != extensions_.end(); ++iter) {
delete *iter;
}
}
bool ExtensionsService::Init() {
// TODO(aa): This message loop should probably come from a backend
// interface, similar to how the message loop for the frontend comes
// from the frontend interface.
g_browser_process->file_thread()->message_loop()->PostTask(FROM_HERE,
NewRunnableMethod(backend_.get(),
&ExtensionsServiceBackend::LoadExtensionsFromDirectory,
install_directory_,
scoped_refptr<ExtensionsServiceFrontendInterface>(this)));
// TODO(aa): Load extensions from other registered directories.
return true;
}
MessageLoop* ExtensionsService::GetMessageLoop() {
return message_loop_;
}
void ExtensionsService::OnExtensionsLoadedFromDirectory(
ExtensionList* extensions) {
extensions_.assign(extensions->begin(), extensions->end());
delete extensions;
// TODO(aa): Notify extensions are loaded.
}
void ExtensionsService::OnExtensionLoadError(const std::string& error) {
// TODO(aa): Print the error message out somewhere better. I think we are
// going to need some sort of 'extension inspector'.
LOG(WARNING) << error;
}
// ExtensionsServicesBackend
bool ExtensionsServiceBackend::LoadExtensionsFromDirectory(
const FilePath& path,
scoped_refptr<ExtensionsServiceFrontendInterface> frontend) {
// Find all child directories in the install directory and load their
// manifests. Post errors and results to the frontend.
scoped_ptr<ExtensionList> extensions(new ExtensionList);
file_util::FileEnumerator enumerator(path.ToWStringHack(),
false, // not recursive
file_util::FileEnumerator::DIRECTORIES);
for (std::wstring child_path = enumerator.Next(); !child_path.empty();
child_path = enumerator.Next()) {
FilePath manifest_path = FilePath::FromWStringHack(child_path).Append(
Extension::kManifestFilename);
if (!file_util::PathExists(manifest_path)) {
ReportExtensionLoadError(frontend.get(), child_path,
Extension::kInvalidManifestError);
continue;
}
JSONFileValueSerializer serializer(manifest_path.ToWStringHack());
Value* root = NULL;
std::string error;
if (!serializer.Deserialize(&root, &error)) {
ReportExtensionLoadError(frontend.get(), child_path, error);
continue;
}
if (!root->IsType(Value::TYPE_DICTIONARY)) {
ReportExtensionLoadError(frontend.get(), child_path,
Extension::kInvalidManifestError);
continue;
}
scoped_ptr<Extension> extension(new Extension());
if (!extension->InitFromValue(*static_cast<DictionaryValue*>(root),
&error)) {
ReportExtensionLoadError(frontend.get(), child_path, error);
continue;
}
extensions->push_back(extension.release());
delete root;
}
ReportExtensionsLoaded(frontend.get(), extensions.release());
return true;
}
void ExtensionsServiceBackend::ReportExtensionLoadError(
ExtensionsServiceFrontendInterface *frontend, const std::wstring& path,
const std::string &error) {
std::string message = StringPrintf("Could not load extension from '%s'. %s",
WideToASCII(path).c_str(), error.c_str());
frontend->GetMessageLoop()->PostTask(FROM_HERE, NewRunnableMethod(
frontend, &ExtensionsServiceFrontendInterface::OnExtensionLoadError,
message));
}
void ExtensionsServiceBackend::ReportExtensionsLoaded(
ExtensionsServiceFrontendInterface *frontend, ExtensionList* extensions) {
frontend->GetMessageLoop()->PostTask(FROM_HERE, NewRunnableMethod(
frontend,
&ExtensionsServiceFrontendInterface::OnExtensionsLoadedFromDirectory,
extensions));
}
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