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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/content_settings/cookie_settings.h"
#include "base/command_line.h"
#include "chrome/browser/content_settings/content_settings_utils.h"
#include "chrome/browser/content_settings/host_content_settings_map.h"
#include "chrome/browser/prefs/pref_service.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/profiles/profile_dependency_manager.h"
#include "chrome/browser/profiles/profile_keyed_service.h"
#include "chrome/common/chrome_notification_types.h"
#include "chrome/common/chrome_switches.h"
#include "chrome/common/content_settings_pattern.h"
#include "chrome/common/pref_names.h"
#include "chrome/common/url_constants.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/notification_service.h"
#include "content/public/browser/notification_source.h"
#include "content/public/browser/user_metrics.h"
#include "googleurl/src/gurl.h"
#include "net/base/net_errors.h"
#include "net/base/static_cookie_policy.h"
using content::BrowserThread;
using content::UserMetricsAction;
namespace {
bool IsValidSetting(ContentSetting setting) {
return (setting == CONTENT_SETTING_ALLOW ||
setting == CONTENT_SETTING_SESSION_ONLY ||
setting == CONTENT_SETTING_BLOCK);
}
bool IsAllowed(ContentSetting setting) {
DCHECK(IsValidSetting(setting));
return (setting == CONTENT_SETTING_ALLOW ||
setting == CONTENT_SETTING_SESSION_ONLY);
}
} // namespace
// static
scoped_refptr<CookieSettings> CookieSettings::Factory::GetForProfile(
Profile* profile) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
return static_cast<CookieSettings*>(
GetInstance()->GetServiceForProfile(profile, true).get());
}
// static
CookieSettings::Factory* CookieSettings::Factory::GetInstance() {
return Singleton<CookieSettings::Factory>::get();
}
CookieSettings::Factory::Factory()
: RefcountedProfileKeyedServiceFactory(
"CookieSettings",
ProfileDependencyManager::GetInstance()) {
}
CookieSettings::Factory::~Factory() {}
void CookieSettings::Factory::RegisterUserPrefs(PrefService* user_prefs) {
user_prefs->RegisterBooleanPref(prefs::kBlockThirdPartyCookies,
false,
PrefService::SYNCABLE_PREF);
}
bool CookieSettings::Factory::ServiceRedirectedInIncognito() {
return true;
}
scoped_refptr<RefcountedProfileKeyedService>
CookieSettings::Factory::BuildServiceInstanceFor(Profile* profile) const {
return new CookieSettings(profile->GetHostContentSettingsMap(),
profile->GetPrefs());
}
CookieSettings::CookieSettings(
HostContentSettingsMap* host_content_settings_map,
PrefService* prefs)
: host_content_settings_map_(host_content_settings_map),
block_third_party_cookies_(
prefs->GetBoolean(prefs::kBlockThirdPartyCookies)) {
if (block_third_party_cookies_) {
content::RecordAction(
UserMetricsAction("ThirdPartyCookieBlockingEnabled"));
} else {
content::RecordAction(
UserMetricsAction("ThirdPartyCookieBlockingDisabled"));
}
pref_change_registrar_.Init(prefs);
pref_change_registrar_.Add(prefs::kBlockThirdPartyCookies, this);
}
ContentSetting
CookieSettings::GetDefaultCookieSetting(std::string* provider_id) const {
return host_content_settings_map_->GetDefaultContentSetting(
CONTENT_SETTINGS_TYPE_COOKIES, provider_id);
}
bool CookieSettings::IsReadingCookieAllowed(const GURL& url,
const GURL& first_party_url) const {
ContentSetting setting = GetCookieSetting(url, first_party_url, false, NULL);
return IsAllowed(setting);
}
bool CookieSettings::IsSettingCookieAllowed(const GURL& url,
const GURL& first_party_url) const {
ContentSetting setting = GetCookieSetting(url, first_party_url, true, NULL);
return IsAllowed(setting);
}
bool CookieSettings::IsCookieSessionOnly(const GURL& origin) const {
ContentSetting setting = GetCookieSetting(origin, origin, true, NULL);
DCHECK(IsValidSetting(setting));
return (setting == CONTENT_SETTING_SESSION_ONLY);
}
void CookieSettings::GetCookieSettings(
ContentSettingsForOneType* settings) const {
return host_content_settings_map_->GetSettingsForOneType(
CONTENT_SETTINGS_TYPE_COOKIES, "", settings);
}
void CookieSettings::SetDefaultCookieSetting(ContentSetting setting) {
DCHECK(IsValidSetting(setting));
host_content_settings_map_->SetDefaultContentSetting(
CONTENT_SETTINGS_TYPE_COOKIES, setting);
}
void CookieSettings::SetCookieSetting(
const ContentSettingsPattern& primary_pattern,
const ContentSettingsPattern& secondary_pattern,
ContentSetting setting) {
DCHECK(IsValidSetting(setting));
if (setting == CONTENT_SETTING_SESSION_ONLY) {
DCHECK(secondary_pattern == ContentSettingsPattern::Wildcard());
}
host_content_settings_map_->SetContentSetting(
primary_pattern, secondary_pattern, CONTENT_SETTINGS_TYPE_COOKIES, "",
setting);
}
void CookieSettings::ResetCookieSetting(
const ContentSettingsPattern& primary_pattern,
const ContentSettingsPattern& secondary_pattern) {
host_content_settings_map_->SetContentSetting(
primary_pattern, secondary_pattern, CONTENT_SETTINGS_TYPE_COOKIES, "",
CONTENT_SETTING_DEFAULT);
}
void CookieSettings::Observe(int type,
const content::NotificationSource& source,
const content::NotificationDetails& details) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
if (type == chrome::NOTIFICATION_PREF_CHANGED) {
PrefService* prefs = content::Source<PrefService>(source).ptr();
std::string* name = content::Details<std::string>(details).ptr();
if (*name == prefs::kBlockThirdPartyCookies) {
base::AutoLock auto_lock(lock_);
block_third_party_cookies_ = prefs->GetBoolean(
prefs::kBlockThirdPartyCookies);
} else {
NOTREACHED() << "Unexpected preference observed";
return;
}
} else {
NOTREACHED() << "Unexpected notification";
}
}
void CookieSettings::ShutdownOnUIThread() {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
pref_change_registrar_.RemoveAll();
}
ContentSetting CookieSettings::GetCookieSetting(
const GURL& url,
const GURL& first_party_url,
bool setting_cookie,
content_settings::SettingSource* source) const {
if (HostContentSettingsMap::ShouldAllowAllContent(
url, first_party_url, CONTENT_SETTINGS_TYPE_COOKIES))
return CONTENT_SETTING_ALLOW;
// First get any host-specific settings.
content_settings::SettingInfo info;
scoped_ptr<base::Value> value(
host_content_settings_map_->GetWebsiteSetting(
url, first_party_url, CONTENT_SETTINGS_TYPE_COOKIES, "", &info));
if (source)
*source = info.source;
// If no explicit exception has been made and third-party cookies are blocked
// by default, apply that rule.
if (info.primary_pattern.MatchesAllHosts() &&
info.secondary_pattern.MatchesAllHosts() &&
ShouldBlockThirdPartyCookies() &&
!first_party_url.SchemeIs(chrome::kExtensionScheme)) {
bool not_strict = CommandLine::ForCurrentProcess()->HasSwitch(
switches::kOnlyBlockSettingThirdPartyCookies);
net::StaticCookiePolicy policy(not_strict ?
net::StaticCookiePolicy::BLOCK_SETTING_THIRD_PARTY_COOKIES :
net::StaticCookiePolicy::BLOCK_ALL_THIRD_PARTY_COOKIES);
int rv;
if (setting_cookie)
rv = policy.CanSetCookie(url, first_party_url);
else
rv = policy.CanGetCookies(url, first_party_url);
DCHECK_NE(net::ERR_IO_PENDING, rv);
if (rv != net::OK)
return CONTENT_SETTING_BLOCK;
}
// We should always have a value, at least from the default provider.
DCHECK(value.get());
return content_settings::ValueToContentSetting(value.get());
}
CookieSettings::~CookieSettings() {}
bool CookieSettings::ShouldBlockThirdPartyCookies() const {
base::AutoLock auto_lock(lock_);
return block_third_party_cookies_;
}
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