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// Copyright (c) 2011 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.
// Defines the Chrome Extensions Clear API functions, which entail
// clearing browsing data, and clearing the browser's cache (which, let's be
// honest, are the same thing), as specified in
// chrome/common/extensions/api/extension_api.json.
#include "chrome/browser/extensions/extension_clear_api.h"
#include <string>
#include "base/values.h"
#include "chrome/browser/browsing_data_remover.h"
#include "chrome/browser/extensions/extension_clear_api_constants.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/ui/browser_list.h"
#include "chrome/common/extensions/extension.h"
#include "chrome/common/extensions/extension_error_utils.h"
#include "content/browser/browser_thread.h"
namespace keys = extension_clear_api_constants;
namespace {
// Converts the JavaScript API's string input ("last_week") into the
// appropriate BrowsingDataRemover::TimePeriod (in this case,
// BrowsingDataRemover::LAST_WEEK).
bool ParseTimePeriod(const std::string& parse,
BrowsingDataRemover::TimePeriod* period) {
if (parse == keys::kHourEnum)
*period = BrowsingDataRemover::LAST_HOUR;
else if (parse == keys::kDayEnum)
*period = BrowsingDataRemover::LAST_DAY;
else if (parse == keys::kWeekEnum)
*period = BrowsingDataRemover::LAST_WEEK;
else if (parse == keys::kMonthEnum)
*period = BrowsingDataRemover::FOUR_WEEKS;
else if (parse == keys::kEverythingEnum)
*period = BrowsingDataRemover::EVERYTHING;
else
return false;
return true;
}
// Given a DictionaryValue |dict|, returns either the value stored as |key|, or
// false, if the given key doesn't exist in the dictionary.
bool DataRemovalRequested(base::DictionaryValue* dict, std::string key) {
bool value = false;
if (!dict->GetBoolean(key, &value))
return false;
else
return value;
}
// Convert the JavaScript API's object input ({ cookies: true }) into the
// appropriate removal mask for the BrowsingDataRemover object.
int ParseRemovalMask(base::DictionaryValue* value) {
int GetRemovalMask = 0;
if (DataRemovalRequested(value, keys::kCacheKey))
GetRemovalMask |= BrowsingDataRemover::REMOVE_CACHE;
if (DataRemovalRequested(value, keys::kDownloadsKey))
GetRemovalMask |= BrowsingDataRemover::REMOVE_DOWNLOADS;
if (DataRemovalRequested(value, keys::kFormDataKey))
GetRemovalMask |= BrowsingDataRemover::REMOVE_FORM_DATA;
if (DataRemovalRequested(value, keys::kHistoryKey))
GetRemovalMask |= BrowsingDataRemover::REMOVE_HISTORY;
if (DataRemovalRequested(value, keys::kPasswordsKey))
GetRemovalMask |= BrowsingDataRemover::REMOVE_PASSWORDS;
// When we talk users about "cookies", we mean not just cookies, but pretty
// much everything associated with an origin.
if (DataRemovalRequested(value, keys::kCookiesKey))
GetRemovalMask |= BrowsingDataRemover::REMOVE_SITE_DATA;
return GetRemovalMask;
}
} // Namespace.
void BrowsingDataExtensionFunction::OnBrowsingDataRemoverDone() {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
this->SendResponse(true);
Release(); // Balanced in RunImpl.
}
bool BrowsingDataExtensionFunction::RunImpl() {
if (BrowsingDataRemover::is_removing()) {
error_ = keys::kOneAtATimeError;
return false;
}
// Parse the |timeframe| argument to generate the TimePeriod.
std::string timeframe;
BrowsingDataRemover::TimePeriod period;
EXTENSION_FUNCTION_VALIDATE(args_->GetString(0, &timeframe));
EXTENSION_FUNCTION_VALIDATE(ParseTimePeriod(timeframe, &period));
// If we're good to go, add a ref (Balanced in OnBrowsingDataRemoverDone)
AddRef();
// Create a BrowsingDataRemover, set the current object as an observer (so
// that we're notified after removal) and call remove() with the arguments
// we've generated above. We can use a raw pointer here, as the browsing data
// remover is responsible for deleting itself once data removal is complete.
BrowsingDataRemover* remover = new BrowsingDataRemover(
GetCurrentBrowser()->profile(), period, base::Time::Now());
remover->AddObserver(this);
remover->Remove(GetRemovalMask());
// Will finish asynchronously.
return true;
}
int ClearBrowsingDataFunction::GetRemovalMask() const {
// Parse the |dataToRemove| argument to generate the removal mask.
base::DictionaryValue* data_to_remove;
if (args_->GetDictionary(1, &data_to_remove))
return ParseRemovalMask(data_to_remove);
else
return 0;
}
int ClearCacheFunction::GetRemovalMask() const {
return BrowsingDataRemover::REMOVE_CACHE;
}
int ClearCookiesFunction::GetRemovalMask() const {
return BrowsingDataRemover::REMOVE_SITE_DATA;
}
int ClearDownloadsFunction::GetRemovalMask() const {
return BrowsingDataRemover::REMOVE_DOWNLOADS;
}
int ClearFormDataFunction::GetRemovalMask() const {
return BrowsingDataRemover::REMOVE_FORM_DATA;
}
int ClearHistoryFunction::GetRemovalMask() const {
return BrowsingDataRemover::REMOVE_HISTORY;
}
int ClearPasswordsFunction::GetRemovalMask() const {
return BrowsingDataRemover::REMOVE_CACHE;
}
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