| package org.bouncycastle.asn1; |
| |
| import java.io.IOException; |
| import java.text.ParseException; |
| import java.text.SimpleDateFormat; |
| import java.util.Date; |
| import java.util.SimpleTimeZone; |
| |
| /** |
| * UTC time object. |
| */ |
| public class DERUTCTime |
| extends ASN1Object |
| { |
| String time; |
| |
| /** |
| * return an UTC Time from the passed in object. |
| * |
| * @exception IllegalArgumentException if the object cannot be converted. |
| */ |
| public static DERUTCTime getInstance( |
| Object obj) |
| { |
| if (obj == null || obj instanceof DERUTCTime) |
| { |
| return (DERUTCTime)obj; |
| } |
| |
| throw new IllegalArgumentException("illegal object in getInstance: " + obj.getClass().getName()); |
| } |
| |
| /** |
| * return an UTC Time from a tagged object. |
| * |
| * @param obj the tagged object holding the object we want |
| * @param explicit true if the object is meant to be explicitly |
| * tagged false otherwise. |
| * @exception IllegalArgumentException if the tagged object cannot |
| * be converted. |
| */ |
| public static DERUTCTime getInstance( |
| ASN1TaggedObject obj, |
| boolean explicit) |
| { |
| DERObject o = obj.getObject(); |
| |
| if (explicit || o instanceof DERUTCTime) |
| { |
| return getInstance(o); |
| } |
| else |
| { |
| return new DERUTCTime(((ASN1OctetString)o).getOctets()); |
| } |
| } |
| |
| /** |
| * The correct format for this is YYMMDDHHMMSSZ (it used to be that seconds were |
| * never encoded. When you're creating one of these objects from scratch, that's |
| * what you want to use, otherwise we'll try to deal with whatever gets read from |
| * the input stream... (this is why the input format is different from the getTime() |
| * method output). |
| * <p> |
| * |
| * @param time the time string. |
| */ |
| public DERUTCTime( |
| String time) |
| { |
| this.time = time; |
| try |
| { |
| this.getDate(); |
| } |
| catch (ParseException e) |
| { |
| throw new IllegalArgumentException("invalid date string: " + e.getMessage()); |
| } |
| } |
| |
| /** |
| * base constructer from a java.util.date object |
| */ |
| public DERUTCTime( |
| Date time) |
| { |
| SimpleDateFormat dateF = new SimpleDateFormat("yyMMddHHmmss'Z'"); |
| |
| dateF.setTimeZone(new SimpleTimeZone(0,"Z")); |
| |
| this.time = dateF.format(time); |
| } |
| |
| DERUTCTime( |
| byte[] bytes) |
| { |
| // |
| // explicitly convert to characters |
| // |
| char[] dateC = new char[bytes.length]; |
| |
| for (int i = 0; i != dateC.length; i++) |
| { |
| dateC[i] = (char)(bytes[i] & 0xff); |
| } |
| |
| this.time = new String(dateC); |
| } |
| |
| /** |
| * return the time as a date based on whatever a 2 digit year will return. For |
| * standardised processing use getAdjustedDate(). |
| * |
| * @return the resulting date |
| * @exception ParseException if the date string cannot be parsed. |
| */ |
| public Date getDate() |
| throws ParseException |
| { |
| SimpleDateFormat dateF = new SimpleDateFormat("yyMMddHHmmssz"); |
| |
| return dateF.parse(getTime()); |
| } |
| |
| /** |
| * return the time as an adjusted date |
| * in the range of 1950 - 2049. |
| * |
| * @return a date in the range of 1950 to 2049. |
| * @exception ParseException if the date string cannot be parsed. |
| */ |
| public Date getAdjustedDate() |
| throws ParseException |
| { |
| SimpleDateFormat dateF = new SimpleDateFormat("yyyyMMddHHmmssz"); |
| |
| dateF.setTimeZone(new SimpleTimeZone(0, "Z")); |
| |
| return dateF.parse(getAdjustedTime()); |
| } |
| |
| /** |
| * return the time - always in the form of |
| * YYMMDDhhmmssGMT(+hh:mm|-hh:mm). |
| * <p> |
| * Normally in a certificate we would expect "Z" rather than "GMT", |
| * however adding the "GMT" means we can just use: |
| * <pre> |
| * dateF = new SimpleDateFormat("yyMMddHHmmssz"); |
| * </pre> |
| * To read in the time and get a date which is compatible with our local |
| * time zone. |
| * <p> |
| * <b>Note:</b> In some cases, due to the local date processing, this |
| * may lead to unexpected results. If you want to stick the normal |
| * convention of 1950 to 2049 use the getAdjustedTime() method. |
| */ |
| public String getTime() |
| { |
| // |
| // standardise the format. |
| // |
| if (time.indexOf('-') < 0 && time.indexOf('+') < 0) |
| { |
| if (time.length() == 11) |
| { |
| return time.substring(0, 10) + "00GMT+00:00"; |
| } |
| else |
| { |
| return time.substring(0, 12) + "GMT+00:00"; |
| } |
| } |
| else |
| { |
| int index = time.indexOf('-'); |
| if (index < 0) |
| { |
| index = time.indexOf('+'); |
| } |
| String d = time; |
| |
| if (index == time.length() - 3) |
| { |
| d += "00"; |
| } |
| |
| if (index == 10) |
| { |
| return d.substring(0, 10) + "00GMT" + d.substring(10, 13) + ":" + d.substring(13, 15); |
| } |
| else |
| { |
| return d.substring(0, 12) + "GMT" + d.substring(12, 15) + ":" + d.substring(15, 17); |
| } |
| } |
| } |
| |
| /** |
| * return a time string as an adjusted date with a 4 digit year. This goes |
| * in the range of 1950 - 2049. |
| */ |
| public String getAdjustedTime() |
| { |
| String d = this.getTime(); |
| |
| if (d.charAt(0) < '5') |
| { |
| return "20" + d; |
| } |
| else |
| { |
| return "19" + d; |
| } |
| } |
| |
| private byte[] getOctets() |
| { |
| char[] cs = time.toCharArray(); |
| byte[] bs = new byte[cs.length]; |
| |
| for (int i = 0; i != cs.length; i++) |
| { |
| bs[i] = (byte)cs[i]; |
| } |
| |
| return bs; |
| } |
| |
| void encode( |
| DEROutputStream out) |
| throws IOException |
| { |
| out.writeEncoded(UTC_TIME, this.getOctets()); |
| } |
| |
| boolean asn1Equals( |
| DERObject o) |
| { |
| if (!(o instanceof DERUTCTime)) |
| { |
| return false; |
| } |
| |
| return time.equals(((DERUTCTime)o).time); |
| } |
| |
| public int hashCode() |
| { |
| return time.hashCode(); |
| } |
| |
| public String toString() |
| { |
| return time; |
| } |
| } |