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// Copyright 2018 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/system/factory_ping_embargo_check.h"
#include <string>
#include <string_view>
#include "base/logging.h"
#include "base/metrics/histogram_macros.h"
#include "chromeos/ash/components/system/statistics_provider.h"
namespace ash::system {
namespace {
// These values are persisted to logs. Entries should not be renumbered and
// numeric values should never be reused.
// These values must match the corresponding enum defined in enums.xml.
enum class EndDateValidityHistogramValue {
kMalformed = 0,
kInvalid = 1,
kValid = 2,
kMaxValue = kValid,
};
// This is in a helper function to help the compiler avoid generating duplicated
// code.
void RecordEndDateValidity(const char* uma_prefix,
EndDateValidityHistogramValue value) {
if (uma_prefix)
UMA_HISTOGRAM_ENUMERATION(std::string(uma_prefix) + ".EndDateValidity",
value);
}
} // namespace
FactoryPingEmbargoState GetPingEmbargoState(
StatisticsProvider* statistics_provider,
const std::string& key_name,
const char* uma_prefix) {
const std::optional<std::string_view> ping_embargo_end_date =
statistics_provider->GetMachineStatistic(key_name);
if (!ping_embargo_end_date) {
return FactoryPingEmbargoState::kMissingOrMalformed;
}
base::Time parsed_time;
if (!base::Time::FromUTCString(ping_embargo_end_date->data(), &parsed_time)) {
LOG(ERROR) << key_name << " exists but cannot be parsed.";
RecordEndDateValidity(uma_prefix,
EndDateValidityHistogramValue::kMalformed);
return FactoryPingEmbargoState::kMissingOrMalformed;
}
if (parsed_time - base::Time::Now() >= kEmbargoEndDateGarbageDateThreshold) {
// If the date is more than this many days in the future, ignore it.
// Because it indicates that the device is not connected to an NTP server
// in the factory, and its internal clock could be off when the date is
// written.
RecordEndDateValidity(uma_prefix, EndDateValidityHistogramValue::kInvalid);
return FactoryPingEmbargoState::kInvalid;
}
RecordEndDateValidity(uma_prefix, EndDateValidityHistogramValue::kValid);
return base::Time::Now() > parsed_time ? FactoryPingEmbargoState::kPassed
: FactoryPingEmbargoState::kNotPassed;
}
FactoryPingEmbargoState GetRlzPingEmbargoState(
StatisticsProvider* statistics_provider) {
return GetPingEmbargoState(statistics_provider, kRlzEmbargoEndDateKey,
/*uma_prefix=*/nullptr);
}
} // namespace ash::system
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