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// Copyright 2016 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 "net/der/encode_values.h"
#include "base/time/time.h"
#include "net/der/parse_values.h"
namespace net {
namespace der {
namespace {
bool WriteFourDigit(uint16_t value, uint8_t out[4]) {
if (value >= 10000)
return false;
out[3] = '0' + (value % 10);
value /= 10;
out[2] = '0' + (value % 10);
value /= 10;
out[1] = '0' + (value % 10);
value /= 10;
out[0] = '0' + value;
return true;
}
bool WriteTwoDigit(uint8_t value, uint8_t out[2]) {
if (value >= 100)
return false;
out[0] = '0' + (value / 10);
out[1] = '0' + (value % 10);
return true;
}
} // namespace
bool EncodeTimeAsGeneralizedTime(const base::Time& time,
GeneralizedTime* generalized_time) {
base::Time::Exploded exploded;
time.UTCExplode(&exploded);
if (!exploded.HasValidValues())
return false;
generalized_time->year = exploded.year;
generalized_time->month = exploded.month;
generalized_time->day = exploded.day_of_month;
generalized_time->hours = exploded.hour;
generalized_time->minutes = exploded.minute;
generalized_time->seconds = exploded.second;
return true;
}
bool GeneralizedTimeToTime(const der::GeneralizedTime& generalized,
base::Time* result) {
base::Time::Exploded exploded = {0};
exploded.year = generalized.year;
exploded.month = generalized.month;
exploded.day_of_month = generalized.day;
exploded.hour = generalized.hours;
exploded.minute = generalized.minutes;
exploded.second = generalized.seconds;
if (base::Time::FromUTCExploded(exploded, result))
return true;
// Fail on obviously bad dates.
if (!exploded.HasValidValues())
return false;
// TODO(mattm): consider consolidating this with
// SaturatedTimeFromUTCExploded from cookie_util.cc
if (static_cast<int>(generalized.year) > base::Time::kExplodedMaxYear) {
*result = base::Time::Max();
return true;
}
if (static_cast<int>(generalized.year) < base::Time::kExplodedMinYear) {
*result = base::Time::Min();
return true;
}
return false;
}
bool EncodeGeneralizedTime(const GeneralizedTime& time,
uint8_t out[kGeneralizedTimeLength]) {
if (!WriteFourDigit(time.year, out) || !WriteTwoDigit(time.month, out + 4) ||
!WriteTwoDigit(time.day, out + 6) ||
!WriteTwoDigit(time.hours, out + 8) ||
!WriteTwoDigit(time.minutes, out + 10) ||
!WriteTwoDigit(time.seconds, out + 12)) {
return false;
}
out[14] = 'Z';
return true;
}
bool EncodeUTCTime(const GeneralizedTime& time, uint8_t out[kUTCTimeLength]) {
if (!time.InUTCTimeRange())
return false;
uint16_t year = time.year - 1900;
if (year >= 100)
year -= 100;
if (!WriteTwoDigit(year, out) || !WriteTwoDigit(time.month, out + 2) ||
!WriteTwoDigit(time.day, out + 4) ||
!WriteTwoDigit(time.hours, out + 6) ||
!WriteTwoDigit(time.minutes, out + 8) ||
!WriteTwoDigit(time.seconds, out + 10)) {
return false;
}
out[12] = 'Z';
return true;
}
} // namespace der
} // namespace net
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