127 lines
2.8 KiB
C#
127 lines
2.8 KiB
C#
using System;
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namespace Org.BouncyCastle.Asn1.X509
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{
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public class Time
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: Asn1Encodable, IAsn1Choice
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{
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internal Asn1Object time;
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public static Time GetInstance(
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Asn1TaggedObject obj,
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bool explicitly)
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{
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return GetInstance(obj.GetObject());
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}
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public Time(
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Asn1Object time)
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{
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if (time == null)
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throw new ArgumentNullException("time");
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if (!(time is DerUtcTime) && !(time is DerGeneralizedTime))
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{
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throw new ArgumentException("unknown object passed to Time");
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}
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this.time = time;
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}
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/**
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* creates a time object from a given date - if the date is between 1950
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* and 2049 a UTCTime object is Generated, otherwise a GeneralizedTime
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* is used.
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*/
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public Time(
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DateTime date)
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{
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string d = date.ToString("yyyyMMddHHmmss") + "Z";
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int year = Int32.Parse(d.Substring(0, 4));
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if (year < 1950 || year > 2049)
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{
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time = new DerGeneralizedTime(d);
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}
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else
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{
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time = new DerUtcTime(d.Substring(2));
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}
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}
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public static Time GetInstance(
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object obj)
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{
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if (obj is Time)
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{
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return (Time) obj;
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}
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if (obj is DerUtcTime)
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{
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return new Time((DerUtcTime) obj);
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}
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if (obj is DerGeneralizedTime)
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{
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return new Time((DerGeneralizedTime) obj);
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}
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throw new ArgumentException("unknown object in factory: " + obj.GetType().Name, "obj");
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}
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public string GetTime()
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{
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if (time is DerUtcTime)
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{
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return ((DerUtcTime) time).AdjustedTimeString;
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}
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return ((DerGeneralizedTime) time).GetTime();
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}
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/// <summary>
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/// Return our time as DateTime.
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/// </summary>
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/// <returns>A date time.</returns>
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public DateTime ToDateTime()
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{
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try
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{
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if (time is DerUtcTime)
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{
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return ((DerUtcTime)time).ToAdjustedDateTime();
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}
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else
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{
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return ((DerGeneralizedTime)time).ToDateTime();
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}
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}
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catch (FormatException e)
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{
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// this should never happen
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throw new InvalidOperationException("invalid date string: " + e.Message);
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}
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}
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/**
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* Produce an object suitable for an Asn1OutputStream.
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* <pre>
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* Time ::= CHOICE {
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* utcTime UTCTime,
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* generalTime GeneralizedTime }
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* </pre>
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*/
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public override Asn1Object ToAsn1Object()
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{
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return time;
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}
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public override string ToString()
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{
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return GetTime();
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}
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}
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}
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