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// Copyright (c) 2009 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_prefs.h"
#include "base/string_util.h"
#include "chrome/common/extensions/extension.h"
namespace {
// Preferences keys
// A preference that keeps track of per-extension settings. This is a dictionary
// object read from the Preferences file, keyed off of extension id's.
const wchar_t kExtensionsPref[] = L"extensions.settings";
// Where an extension was installed from. (see Extension::Location)
const wchar_t kPrefLocation[] = L"location";
// Enabled, disabled, killed, etc. (see Extension::State)
const wchar_t kPrefState[] = L"state";
// The path to the current version's manifest file.
const wchar_t kPrefPath[] = L"path";
// A preference that tracks extension shelf configuration. This is a list
// object read from the Preferences file, containing a list of toolstrip URLs.
const wchar_t kExtensionShelf[] = L"extensions.shelf";
}
////////////////////////////////////////////////////////////////////////////////
InstalledExtensions::InstalledExtensions(ExtensionPrefs* prefs) {
extension_data_.reset(prefs->CopyCurrentExtensions());
}
InstalledExtensions::~InstalledExtensions() {
}
void InstalledExtensions::VisitInstalledExtensions(
InstalledExtensions::Callback *callback) {
DictionaryValue::key_iterator extension_id = extension_data_->begin_keys();
for (; extension_id != extension_data_->end_keys(); ++extension_id) {
DictionaryValue* ext;
if (!extension_data_->GetDictionary(*extension_id, &ext)) {
LOG(WARNING) << "Invalid pref for extension " << *extension_id;
NOTREACHED();
continue;
}
FilePath::StringType path;
if (!ext->GetString(kPrefPath, &path)) {
LOG(WARNING) << "Missing path pref for extension " << *extension_id;
NOTREACHED();
continue;
}
int location_value;
if (!ext->GetInteger(kPrefLocation, &location_value)) {
LOG(WARNING) << "Missing location pref for extension " << *extension_id;
NOTREACHED();
continue;
}
Extension::Location location =
static_cast<Extension::Location>(location_value);
callback->Run(WideToASCII(*extension_id), FilePath(path), location);
}
}
////////////////////////////////////////////////////////////////////////////////
ExtensionPrefs::ExtensionPrefs(PrefService* prefs) : prefs_(prefs) {
if (!prefs_->FindPreference(kExtensionsPref))
prefs_->RegisterDictionaryPref(kExtensionsPref);
if (!prefs->FindPreference(kExtensionShelf))
prefs->RegisterListPref(kExtensionShelf);
}
DictionaryValue* ExtensionPrefs::CopyCurrentExtensions() {
const DictionaryValue* extensions = prefs_->GetDictionary(kExtensionsPref);
if (extensions) {
DictionaryValue* copy =
static_cast<DictionaryValue*>(extensions->DeepCopy());
return copy;
}
return new DictionaryValue;
}
void ExtensionPrefs::GetKilledExtensionIds(std::set<std::string>* killed_ids) {
const DictionaryValue* dict = prefs_->GetDictionary(kExtensionsPref);
if (!dict || dict->GetSize() == 0)
return;
for (DictionaryValue::key_iterator i = dict->begin_keys();
i != dict->end_keys(); ++i) {
std::wstring key_name = *i;
if (!Extension::IdIsValid(WideToASCII(key_name))) {
LOG(WARNING) << "Invalid external extension ID encountered: "
<< WideToASCII(key_name);
continue;
}
DictionaryValue* extension = NULL;
if (!dict->GetDictionary(key_name, &extension)) {
NOTREACHED();
continue;
}
// Check to see if the extension has been killed.
int state;
if (extension->GetInteger(kPrefState, &state) &&
state == static_cast<int>(Extension::KILLBIT)) {
StringToLowerASCII(&key_name);
killed_ids->insert(WideToASCII(key_name));
}
}
}
ExtensionPrefs::URLList ExtensionPrefs::GetShelfToolstripOrder() {
URLList urls;
const ListValue* toolstrip_urls = prefs_->GetList(kExtensionShelf);
if (toolstrip_urls) {
for (size_t i = 0; i < toolstrip_urls->GetSize(); ++i) {
std::string url;
if (toolstrip_urls->GetString(i, &url))
urls.push_back(GURL(url));
}
}
return urls;
}
void ExtensionPrefs::SetShelfToolstripOrder(const URLList& urls) {
ListValue* toolstrip_urls = prefs_->GetMutableList(kExtensionShelf);
toolstrip_urls->Clear();
for (size_t i = 0; i < urls.size(); ++i) {
GURL url = urls[i];
toolstrip_urls->Append(new StringValue(url.spec()));
}
prefs_->ScheduleSavePersistentPrefs();
}
void ExtensionPrefs::OnExtensionInstalled(Extension* extension) {
std::string id = extension->id();
UpdateExtensionPref(id, kPrefState,
Value::CreateIntegerValue(Extension::ENABLED));
UpdateExtensionPref(id, kPrefLocation,
Value::CreateIntegerValue(extension->location()));
UpdateExtensionPref(id, kPrefPath,
Value::CreateStringValue(extension->path().value()));
prefs_->ScheduleSavePersistentPrefs();
}
void ExtensionPrefs::OnExtensionUninstalled(const Extension* extension,
bool external_uninstall) {
// For external extensions, we save a preference reminding ourself not to try
// and install the extension anymore (except when |external_uninstall| is
// true, which signifies that the registry key was deleted or the pref file
// no longer lists the extension).
if (!external_uninstall &&
Extension::IsExternalLocation(extension->location())) {
UpdateExtensionPref(extension->id(), kPrefState,
Value::CreateIntegerValue(Extension::KILLBIT));
prefs_->ScheduleSavePersistentPrefs();
} else {
DeleteExtensionPrefs(extension->id());
}
}
bool ExtensionPrefs::UpdateExtensionPref(const std::string& extension_id,
const std::wstring& key,
Value* data_value) {
DictionaryValue* extension = GetOrCreateExtensionPref(extension_id);
if (!extension->Set(key, data_value)) {
NOTREACHED() << L"Cannot modify key: '" << key.c_str()
<< "' for extension: '" << extension_id.c_str() << "'";
return false;
}
return true;
}
void ExtensionPrefs::DeleteExtensionPrefs(const std::string& extension_id) {
std::wstring id = ASCIIToWide(extension_id);
DictionaryValue* dict = prefs_->GetMutableDictionary(kExtensionsPref);
if (dict->HasKey(id)) {
dict->Remove(id, NULL);
prefs_->ScheduleSavePersistentPrefs();
}
}
DictionaryValue* ExtensionPrefs::GetOrCreateExtensionPref(
const std::string& extension_id) {
DictionaryValue* dict = prefs_->GetMutableDictionary(kExtensionsPref);
DictionaryValue* extension = NULL;
std::wstring id = ASCIIToWide(extension_id);
if (!dict->GetDictionary(id, &extension)) {
// Extension pref does not exist, create it.
extension = new DictionaryValue();
dict->Set(id, extension);
}
return extension;
}
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