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// Copyright (c) 2012 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_preference_helpers.h"
#include "base/json/json_writer.h"
#include "base/values.h"
#include "chrome/browser/extensions/extension_event_router.h"
#include "chrome/browser/extensions/extension_prefs.h"
#include "chrome/browser/extensions/extension_service.h"
#include "chrome/browser/prefs/pref_service.h"
#include "chrome/browser/profiles/profile.h"
namespace {
const char kIncognitoPersistent[] = "incognito_persistent";
const char kIncognitoSessionOnly[] = "incognito_session_only";
const char kRegular[] = "regular";
const char kLevelOfControlKey[] = "levelOfControl";
const char kNotControllable[] = "not_controllable";
const char kControlledByOtherExtensions[] = "controlled_by_other_extensions";
const char kControllableByThisExtension[] = "controllable_by_this_extension";
const char kControlledByThisExtension[] = "controlled_by_this_extension";
} // namespace
namespace extension_preference_helpers {
bool StringToScope(const std::string& s, ExtensionPrefsScope* scope) {
if (s == kRegular)
*scope = kExtensionPrefsScopeRegular;
else if (s == kIncognitoPersistent)
*scope = kExtensionPrefsScopeIncognitoPersistent;
else if (s == kIncognitoSessionOnly)
*scope = kExtensionPrefsScopeIncognitoSessionOnly;
else
return false;
return true;
}
const char* GetLevelOfControl(
Profile* profile,
const std::string& extension_id,
const std::string& browser_pref,
bool incognito) {
PrefService* prefs = incognito ? profile->GetOffTheRecordPrefs()
: profile->GetPrefs();
const PrefService::Preference* pref =
prefs->FindPreference(browser_pref.c_str());
CHECK(pref);
ExtensionPrefs* ep = profile->GetExtensionService()->extension_prefs();
if (!pref->IsExtensionModifiable())
return kNotControllable;
if (ep->DoesExtensionControlPref(extension_id, browser_pref, incognito))
return kControlledByThisExtension;
if (ep->CanExtensionControlPref(extension_id, browser_pref, incognito))
return kControllableByThisExtension;
return kControlledByOtherExtensions;
}
void DispatchEventToExtensions(
Profile* profile,
const std::string& event_name,
ListValue* args,
ExtensionAPIPermission::ID permission,
bool incognito,
const std::string& browser_pref) {
ExtensionEventRouter* router = profile->GetExtensionEventRouter();
if (!router || !router->HasEventListener(event_name))
return;
ExtensionService* extension_service = profile->GetExtensionService();
const ExtensionSet* extensions = extension_service->extensions();
for (ExtensionSet::const_iterator it = extensions->begin();
it != extensions->end(); ++it) {
std::string extension_id = (*it)->id();
// TODO(bauerb): Only iterate over registered event listeners.
if (router->ExtensionHasEventListener(extension_id, event_name) &&
(*it)->HasAPIPermission(permission) &&
(!incognito || extension_service->CanCrossIncognito(*it))) {
// Inject level of control key-value.
DictionaryValue* dict;
bool rv = args->GetDictionary(0, &dict);
DCHECK(rv);
std::string level_of_control =
GetLevelOfControl(profile, extension_id, browser_pref, incognito);
dict->SetString(kLevelOfControlKey, level_of_control);
std::string json_args;
base::JSONWriter::Write(args, &json_args);
router->DispatchEventToExtension(
extension_id, event_name, json_args, NULL, GURL());
}
}
}
} // namespace extension_preference_helpers
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