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// Copyright 2014 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/push_messaging/push_messaging_application_id.h"
#include "base/guid.h"
#include "base/logging.h"
#include "base/prefs/pref_service.h"
#include "base/prefs/scoped_user_pref_update.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/string_split.h"
#include "base/strings/string_util.h"
#include "base/values.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/common/pref_names.h"
#include "components/pref_registry/pref_registry_syncable.h"
namespace {
const char kSeparator = '#'; // Ok as only the origin of the url is used.
} // namespace
const char kPushMessagingApplicationIdPrefix[] = "wp:";
// static
void PushMessagingApplicationId::RegisterProfilePrefs(
user_prefs::PrefRegistrySyncable* registry) {
registry->RegisterDictionaryPref(
prefs::kPushMessagingApplicationIdMap,
user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
}
// static
PushMessagingApplicationId PushMessagingApplicationId::Generate(
const GURL& origin, int64 service_worker_registration_id)
{
// TODO(johnme): Does GenerateGUID produce good enough random numbers?
std::string guid = base::GenerateGUID();
CHECK(!guid.empty());
std::string app_id_guid =
kPushMessagingApplicationIdPrefix + guid;
PushMessagingApplicationId application_id(app_id_guid, origin,
service_worker_registration_id);
DCHECK(application_id.IsValid());
return application_id;
}
// static
PushMessagingApplicationId PushMessagingApplicationId::Get(
Profile* profile, const std::string& app_id_guid) {
// Workaround crbug.com/461867 in GCM where it converts subtypes to lowercase.
// TODO(johnme): Remove this when obsolete
const size_t prefix_len = strlen(kPushMessagingApplicationIdPrefix);
if (app_id_guid.size() < prefix_len)
return PushMessagingApplicationId();
std::string uppercase_app_id =
app_id_guid.substr(0, prefix_len) +
StringToUpperASCII(app_id_guid.substr(prefix_len, std::string::npos));
const base::DictionaryValue* map =
profile->GetPrefs()->GetDictionary(prefs::kPushMessagingApplicationIdMap);
std::string origin_and_sw_id;
if (!map->GetStringWithoutPathExpansion(uppercase_app_id, &origin_and_sw_id))
return PushMessagingApplicationId();
std::vector<std::string> parts;
base::SplitString(origin_and_sw_id, kSeparator, &parts);
if (parts.size() != 2)
return PushMessagingApplicationId();
GURL origin = GURL(parts[0]);
int64 service_worker_registration_id;
if (!base::StringToInt64(parts[1], &service_worker_registration_id))
return PushMessagingApplicationId();
PushMessagingApplicationId application_id(uppercase_app_id, origin,
service_worker_registration_id);
DCHECK(application_id.IsValid());
return application_id;
}
// static
PushMessagingApplicationId PushMessagingApplicationId::Get(
Profile* profile, const GURL& origin, int64 service_worker_registration_id)
{
base::StringValue origin_and_sw_id = base::StringValue(origin.spec() +
kSeparator + base::Int64ToString(service_worker_registration_id));
const base::DictionaryValue* map =
profile->GetPrefs()->GetDictionary(prefs::kPushMessagingApplicationIdMap);
for (auto it = base::DictionaryValue::Iterator(*map); !it.IsAtEnd();
it.Advance()) {
if (it.value().Equals(&origin_and_sw_id))
return Get(profile, it.key());
}
return PushMessagingApplicationId();
}
// static
std::vector<PushMessagingApplicationId> PushMessagingApplicationId::GetAll(
Profile* profile) {
std::vector<PushMessagingApplicationId> result;
const base::DictionaryValue* map =
profile->GetPrefs()->GetDictionary(prefs::kPushMessagingApplicationIdMap);
for (auto it = base::DictionaryValue::Iterator(*map); !it.IsAtEnd();
it.Advance()) {
result.push_back(Get(profile, it.key()));
}
return result;
}
void PushMessagingApplicationId::PersistToDisk(Profile* profile) const {
DCHECK(IsValid());
DictionaryPrefUpdate update(profile->GetPrefs(),
prefs::kPushMessagingApplicationIdMap);
base::DictionaryValue* map = update.Get();
// Delete any stale entry with the same origin and Service Worker
// registration id (hence we ensure there is a 1:1 not 1:many mapping).
PushMessagingApplicationId old = Get(profile, origin_,
service_worker_registration_id_);
if (old.IsValid())
map->RemoveWithoutPathExpansion(old.app_id_guid_, nullptr);
std::string origin_and_sw_id = origin_.spec() + kSeparator +
base::Int64ToString(service_worker_registration_id_);
map->SetStringWithoutPathExpansion(app_id_guid_, origin_and_sw_id);
}
void PushMessagingApplicationId::DeleteFromDisk(Profile* profile) const {
DCHECK(IsValid());
DictionaryPrefUpdate update(profile->GetPrefs(),
prefs::kPushMessagingApplicationIdMap);
base::DictionaryValue* map = update.Get();
map->RemoveWithoutPathExpansion(app_id_guid_, nullptr);
}
PushMessagingApplicationId::PushMessagingApplicationId()
: origin_(GURL::EmptyGURL()),
service_worker_registration_id_(-1) {
}
PushMessagingApplicationId::PushMessagingApplicationId(
const std::string& app_id_guid,
const GURL& origin,
int64 service_worker_registration_id)
: app_id_guid_(app_id_guid),
origin_(origin),
service_worker_registration_id_(service_worker_registration_id) {
}
PushMessagingApplicationId::~PushMessagingApplicationId() {
}
bool PushMessagingApplicationId::IsValid() const {
const size_t prefix_len = strlen(kPushMessagingApplicationIdPrefix);
return origin_.is_valid() && origin_.GetOrigin() == origin_
&& service_worker_registration_id_ >= 0
&& !app_id_guid_.compare(0, prefix_len, kPushMessagingApplicationIdPrefix)
&& base::IsValidGUID(app_id_guid_.substr(prefix_len, std::string::npos));
}
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