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// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chromeos/ash/components/sync_wifi/pending_network_configuration_tracker_impl.h"
#include <optional>
#include "base/base64url.h"
#include "base/strings/stringprintf.h"
#include "base/uuid.h"
#include "chromeos/ash/components/sync_wifi/network_identifier.h"
#include "components/prefs/pref_registry_simple.h"
#include "components/prefs/pref_service.h"
namespace ash::sync_wifi {
namespace {
const char kPendingNetworkConfigurationsPref[] =
"sync_wifi.pending_network_configuration_updates";
const char kChangeGuidKey[] = "ChangeGuid";
const char kCompletedAttemptsKey[] = "CompletedAttempts";
const char kSpecificsKey[] = "Specifics";
std::string GeneratePath(const NetworkIdentifier& id,
const std::string& subkey) {
return base::StringPrintf("%s.%s", id.SerializeToString().c_str(),
subkey.c_str());
}
PendingNetworkConfigurationUpdate ConvertToPendingUpdate(
base::Value::Dict* dict,
const NetworkIdentifier& id) {
std::string* change_guid = dict->FindString(kChangeGuidKey);
std::optional<sync_pb::WifiConfigurationSpecifics> specifics;
std::string* encoded_specifics_string = dict->FindString(kSpecificsKey);
std::string specifics_string;
if (encoded_specifics_string &&
base::Base64UrlDecode(*encoded_specifics_string,
base::Base64UrlDecodePolicy::REQUIRE_PADDING,
&specifics_string) &&
!specifics_string.empty()) {
sync_pb::WifiConfigurationSpecifics data;
data.ParseFromString(specifics_string);
specifics = data;
}
std::optional<int> completed_attempts = dict->FindInt(kCompletedAttemptsKey);
DCHECK(change_guid);
DCHECK(completed_attempts);
return PendingNetworkConfigurationUpdate(id, *change_guid, specifics,
completed_attempts.value());
}
} // namespace
// static
void PendingNetworkConfigurationTrackerImpl::RegisterProfilePrefs(
PrefRegistrySimple* registry) {
registry->RegisterDictionaryPref(kPendingNetworkConfigurationsPref);
}
PendingNetworkConfigurationTrackerImpl::PendingNetworkConfigurationTrackerImpl(
PrefService* pref_service)
: pref_service_(pref_service),
dict_(pref_service_->GetDict(kPendingNetworkConfigurationsPref).Clone()) {
}
PendingNetworkConfigurationTrackerImpl::
~PendingNetworkConfigurationTrackerImpl() = default;
std::string PendingNetworkConfigurationTrackerImpl::TrackPendingUpdate(
const NetworkIdentifier& id,
const std::optional<sync_pb::WifiConfigurationSpecifics>& specifics) {
std::string serialized_specifics;
if (!specifics)
serialized_specifics = std::string();
else
CHECK(specifics->SerializeToString(&serialized_specifics));
// base::Value only allows UTF8 encoded strings.
std::string encoded_specifics;
base::Base64UrlEncode(serialized_specifics,
base::Base64UrlEncodePolicy::INCLUDE_PADDING,
&encoded_specifics);
std::string change_guid = base::Uuid::GenerateRandomV4().AsLowercaseString();
dict_.SetByDottedPath(GeneratePath(id, kChangeGuidKey), change_guid);
dict_.SetByDottedPath(GeneratePath(id, kSpecificsKey), encoded_specifics);
dict_.SetByDottedPath(GeneratePath(id, kCompletedAttemptsKey), 0);
pref_service_->SetDict(kPendingNetworkConfigurationsPref, dict_.Clone());
return change_guid;
}
void PendingNetworkConfigurationTrackerImpl::MarkComplete(
const std::string& change_guid,
const NetworkIdentifier& id) {
if (!GetPendingUpdate(change_guid, id))
return;
dict_.Remove(id.SerializeToString());
pref_service_->SetDict(kPendingNetworkConfigurationsPref, dict_.Clone());
}
void PendingNetworkConfigurationTrackerImpl::IncrementCompletedAttempts(
const std::string& change_guid,
const NetworkIdentifier& id) {
std::string path = GeneratePath(id, kCompletedAttemptsKey);
int completed_attempts = dict_.FindIntByDottedPath(path).value_or(0);
dict_.SetByDottedPath(path, completed_attempts + 1);
}
std::vector<PendingNetworkConfigurationUpdate>
PendingNetworkConfigurationTrackerImpl::GetPendingUpdates() {
std::vector<PendingNetworkConfigurationUpdate> list;
for (const auto [key, value] : dict_) {
list.push_back(ConvertToPendingUpdate(
/*dict=*/&value.GetDict(),
NetworkIdentifier::DeserializeFromString(key)));
}
return list;
}
std::optional<PendingNetworkConfigurationUpdate>
PendingNetworkConfigurationTrackerImpl::GetPendingUpdate(
const std::string& change_guid,
const NetworkIdentifier& id) {
std::string* found_id =
dict_.FindStringByDottedPath(GeneratePath(id, kChangeGuidKey));
if (!found_id || *found_id != change_guid)
return std::nullopt;
return ConvertToPendingUpdate(dict_.FindDict(id.SerializeToString()), id);
}
} // namespace ash::sync_wifi
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