| package org.bouncycastle.asn1; |
| |
| import java.io.IOException; |
| |
| import org.bouncycastle.util.Arrays; |
| import org.bouncycastle.util.Strings; |
| |
| /** |
| * Carrier class for a DER encoding GeneralString |
| */ |
| public class DERGeneralString |
| extends ASN1Primitive |
| implements ASN1String |
| { |
| private final byte[] string; |
| |
| /** |
| * return a GeneralString from the given object. |
| * |
| * @param obj the object we want converted. |
| * @exception IllegalArgumentException if the object cannot be converted. |
| * @return a DERBMPString instance, or null. |
| */ |
| public static DERGeneralString getInstance( |
| Object obj) |
| { |
| if (obj == null || obj instanceof DERGeneralString) |
| { |
| return (DERGeneralString) obj; |
| } |
| |
| if (obj instanceof byte[]) |
| { |
| try |
| { |
| return (DERGeneralString)fromByteArray((byte[])obj); |
| } |
| catch (Exception e) |
| { |
| throw new IllegalArgumentException("encoding error in getInstance: " + e.toString()); |
| } |
| } |
| |
| throw new IllegalArgumentException("illegal object in getInstance: " |
| + obj.getClass().getName()); |
| } |
| |
| /** |
| * return a GeneralString 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. |
| * @return a DERGeneralString instance. |
| */ |
| public static DERGeneralString getInstance( |
| ASN1TaggedObject obj, |
| boolean explicit) |
| { |
| ASN1Primitive o = obj.getObject(); |
| |
| if (explicit || o instanceof DERGeneralString) |
| { |
| return getInstance(o); |
| } |
| else |
| { |
| return new DERGeneralString(((ASN1OctetString)o).getOctets()); |
| } |
| } |
| |
| DERGeneralString(byte[] string) |
| { |
| this.string = string; |
| } |
| |
| /** |
| * Construct a GeneralString from the passed in String. |
| * |
| * @param string the string to be contained in this object. |
| */ |
| public DERGeneralString(String string) |
| { |
| this.string = Strings.toByteArray(string); |
| } |
| |
| /** |
| * Return a Java String representation of our contained String. |
| * |
| * @return a Java String representing our contents. |
| */ |
| public String getString() |
| { |
| return Strings.fromByteArray(string); |
| } |
| |
| public String toString() |
| { |
| return getString(); |
| } |
| |
| /** |
| * Return a byte array representation of our contained String. |
| * |
| * @return a byte array representing our contents. |
| */ |
| public byte[] getOctets() |
| { |
| return Arrays.clone(string); |
| } |
| |
| boolean isConstructed() |
| { |
| return false; |
| } |
| |
| int encodedLength() |
| { |
| return 1 + StreamUtil.calculateBodyLength(string.length) + string.length; |
| } |
| |
| void encode(ASN1OutputStream out) |
| throws IOException |
| { |
| out.writeEncoded(BERTags.GENERAL_STRING, string); |
| } |
| |
| public int hashCode() |
| { |
| return Arrays.hashCode(string); |
| } |
| |
| boolean asn1Equals(ASN1Primitive o) |
| { |
| if (!(o instanceof DERGeneralString)) |
| { |
| return false; |
| } |
| DERGeneralString s = (DERGeneralString)o; |
| |
| return Arrays.areEqual(string, s.string); |
| } |
| } |