1 files changed, 142 insertions, 0 deletions
diff --git a/security/nss/lib/mozpkix/include/pkix/Time.h b/security/nss/lib/mozpkix/include/pkix/Time.h
new file mode 100644
index 0000000000..5402430370
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+++ b/security/nss/lib/mozpkix/include/pkix/Time.h
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+/* -*- 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);
+
+// Note the epoch is the unix epoch (ie 00:00:00 UTC, 1 January 1970)
+Result SecondsSinceEpochFromTime(Time time, uint64_t* outSeconds);
+
+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:
+  friend Result SecondsSinceEpochFromTime(Time time, uint64_t* outSeconds);
+
+  uint64_t durationInSeconds;
+};
+}  // namespace pkix
+}  // namespace mozilla
+
+#endif  // mozilla_pkix_Time_h