| /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
| /* vim: set ts=8 sts=2 et sw=2 tw=80: */ |
| /* This code is made available to you under your choice of the following sets |
| * of licensing terms: |
| */ |
| /* This Source Code Form is subject to the terms of the Mozilla Public |
| * License, v. 2.0. If a copy of the MPL was not distributed with this |
| * file, You can obtain one at http://mozilla.org/MPL/2.0/. |
| */ |
| /* Copyright 2014 Mozilla Contributors |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #ifndef mozilla_pkix_Time_h |
| #define mozilla_pkix_Time_h |
| |
| #include <stdint.h> |
| #include <ctime> |
| #include <limits> |
| |
| #include "mozpkix/Result.h" |
| |
| namespace mozilla { |
| namespace pkix { |
| |
| // Time with a range from the first second of year 0 (AD) through at least the |
| // last second of year 9999, which is the range of legal times in X.509 and |
| // OCSP. This type has second-level precision. The time zone is always UTC. |
| // |
| // Pass by value, not by reference. |
| class Time final { |
| public: |
| // Construct an uninitialized instance. |
| // |
| // This will fail to compile because there is no default constructor: |
| // Time x; |
| // |
| // This will succeed, leaving the time uninitialized: |
| // Time x(Time::uninitialized); |
| enum Uninitialized { uninitialized }; |
| explicit Time(Uninitialized) {} |
| |
| bool operator==(const Time& other) const { |
| return elapsedSecondsAD == other.elapsedSecondsAD; |
| } |
| bool operator>(const Time& other) const { |
| return elapsedSecondsAD > other.elapsedSecondsAD; |
| } |
| bool operator>=(const Time& other) const { |
| return elapsedSecondsAD >= other.elapsedSecondsAD; |
| } |
| bool operator<(const Time& other) const { |
| return elapsedSecondsAD < other.elapsedSecondsAD; |
| } |
| bool operator<=(const Time& other) const { |
| return elapsedSecondsAD <= other.elapsedSecondsAD; |
| } |
| |
| Result AddSeconds(uint64_t seconds) { |
| if (std::numeric_limits<uint64_t>::max() - elapsedSecondsAD < seconds) { |
| return Result::FATAL_ERROR_INVALID_ARGS; // integer overflow |
| } |
| elapsedSecondsAD += seconds; |
| return Success; |
| } |
| |
| Result SubtractSeconds(uint64_t seconds) { |
| if (seconds > elapsedSecondsAD) { |
| return Result::FATAL_ERROR_INVALID_ARGS; // integer overflow |
| } |
| elapsedSecondsAD -= seconds; |
| return Success; |
| } |
| |
| static const uint64_t ONE_DAY_IN_SECONDS = |
| UINT64_C(24) * UINT64_C(60) * UINT64_C(60); |
| |
| private: |
| // This constructor is hidden to prevent accidents like this: |
| // |
| // Time foo(time_t t) |
| // { |
| // // WRONG! 1970-01-01-00:00:00 == time_t(0), but not Time(0)! |
| // return Time(t); |
| // } |
| explicit Time(uint64_t aElapsedSecondsAD) |
| : elapsedSecondsAD(aElapsedSecondsAD) {} |
| friend Time TimeFromElapsedSecondsAD(uint64_t); |
| friend class Duration; |
| |
| uint64_t elapsedSecondsAD; |
| }; |
| |
| inline Time TimeFromElapsedSecondsAD(uint64_t aElapsedSecondsAD) { |
| return Time(aElapsedSecondsAD); |
| } |
| |
| Time Now(); |
| |
| // Note the epoch is the unix epoch (ie 00:00:00 UTC, 1 January 1970) |
| Time TimeFromEpochInSeconds(uint64_t secondsSinceEpoch); |
| |
| class Duration final { |
| public: |
| Duration(Time timeA, Time timeB) |
| : durationInSeconds( |
| timeA < timeB ? timeB.elapsedSecondsAD - timeA.elapsedSecondsAD |
| : timeA.elapsedSecondsAD - timeB.elapsedSecondsAD) {} |
| |
| explicit Duration(uint64_t aDurationInSeconds) |
| : durationInSeconds(aDurationInSeconds) {} |
| |
| bool operator>(const Duration& other) const { |
| return durationInSeconds > other.durationInSeconds; |
| } |
| bool operator<(const Duration& other) const { |
| return durationInSeconds < other.durationInSeconds; |
| } |
| |
| private: |
| uint64_t durationInSeconds; |
| }; |
| } |
| } // namespace mozilla::pkix |
| |
| #endif // mozilla_pkix_Time_h |