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org.bouncycastle.asn1.x500.X500Name Maven / Gradle / Ivy

package org.bouncycastle.asn1.x500;

import java.util.Enumeration;

import org.bouncycastle.asn1.ASN1Choice;
import org.bouncycastle.asn1.ASN1Encodable;
import org.bouncycastle.asn1.ASN1Object;
import org.bouncycastle.asn1.ASN1ObjectIdentifier;
import org.bouncycastle.asn1.ASN1Primitive;
import org.bouncycastle.asn1.ASN1Sequence;
import org.bouncycastle.asn1.ASN1TaggedObject;
import org.bouncycastle.asn1.DERSequence;
import org.bouncycastle.asn1.x500.style.BCStyle;

/**
 * The X.500 Name object.
 * 
 *     Name ::= CHOICE {
 *                       RDNSequence }
 *
 *     RDNSequence ::= SEQUENCE OF RelativeDistinguishedName
 *
 *     RelativeDistinguishedName ::= SET SIZE (1..MAX) OF AttributeTypeAndValue
 *
 *     AttributeTypeAndValue ::= SEQUENCE {
 *                                   type  OBJECT IDENTIFIER,
 *                                   value ANY }
 * 
*/ public class X500Name extends ASN1Object implements ASN1Choice { private static X500NameStyle defaultStyle = BCStyle.INSTANCE; private boolean isHashCodeCalculated; private int hashCodeValue; private X500NameStyle style; private RDN[] rdns; private DERSequence rdnSeq; /** * @deprecated use the getInstance() method that takes a style. */ public X500Name(X500NameStyle style, X500Name name) { this.style = style; this.rdns = name.rdns; this.rdnSeq = name.rdnSeq; } /** * Return a X500Name based on the passed in tagged object. * * @param obj tag object holding name. * @param explicit true if explicitly tagged false otherwise. * @return the X500Name */ public static X500Name getInstance( ASN1TaggedObject obj, boolean explicit) { // must be true as choice item return getInstance(ASN1Sequence.getInstance(obj, true)); } public static X500Name getInstance( Object obj) { if (obj instanceof X500Name) { return (X500Name)obj; } else if (obj != null) { return new X500Name(ASN1Sequence.getInstance(obj)); } return null; } public static X500Name getInstance( X500NameStyle style, Object obj) { if (obj instanceof X500Name) { return new X500Name(style, (X500Name)obj); } else if (obj != null) { return new X500Name(style, ASN1Sequence.getInstance(obj)); } return null; } /** * Constructor from ASN1Sequence * * the principal will be a list of constructed sets, each containing an (OID, String) pair. */ private X500Name( ASN1Sequence seq) { this(defaultStyle, seq); } private X500Name( X500NameStyle style, ASN1Sequence seq) { this.style = style; this.rdns = new RDN[seq.size()]; boolean inPlace = true; int index = 0; for (Enumeration e = seq.getObjects(); e.hasMoreElements();) { Object element = e.nextElement(); RDN rdn = RDN.getInstance(element); inPlace &= (rdn == element); rdns[index++] = rdn; } if (inPlace) { this.rdnSeq = DERSequence.convert(seq); } else { this.rdnSeq = new DERSequence(this.rdns); } } public X500Name( RDN[] rDNs) { this(defaultStyle, rDNs); } public X500Name( X500NameStyle style, RDN[] rDNs) { this.style = style; this.rdns = (RDN[])rDNs.clone(); this.rdnSeq = new DERSequence(this.rdns); } public X500Name( String dirName) { this(defaultStyle, dirName); } public X500Name( X500NameStyle style, String dirName) { this(style.fromString(dirName)); this.style = style; } /** * return an array of RDNs in structure order. * * @return an array of RDN objects. */ public RDN[] getRDNs() { return (RDN[])rdns.clone(); } /** * return an array of OIDs contained in the attribute type of each RDN in structure order. * * @return an array, possibly zero length, of ASN1ObjectIdentifiers objects. */ public ASN1ObjectIdentifier[] getAttributeTypes() { int count = rdns.length, totalSize = 0; for (int i = 0; i < count; ++i) { RDN rdn = rdns[i]; totalSize += rdn.size(); } ASN1ObjectIdentifier[] oids = new ASN1ObjectIdentifier[totalSize]; int oidsOff = 0; for (int i = 0; i < count; ++i) { RDN rdn = rdns[i]; oidsOff += rdn.collectAttributeTypes(oids, oidsOff); } return oids; } /** * return an array of RDNs containing the attribute type given by OID in structure order. * * @param attributeType the type OID we are looking for. * @return an array, possibly zero length, of RDN objects. */ public RDN[] getRDNs(ASN1ObjectIdentifier attributeType) { RDN[] res = new RDN[rdns.length]; int count = 0; for (int i = 0; i != rdns.length; i++) { RDN rdn = rdns[i]; if (rdn.containsAttributeType(attributeType)) { res[count++] = rdn; } } if (count < res.length) { RDN[] tmp = new RDN[count]; System.arraycopy(res, 0, tmp, 0, tmp.length); res = tmp; } return res; } public ASN1Primitive toASN1Primitive() { return rdnSeq; } public int hashCode() { if (isHashCodeCalculated) { return hashCodeValue; } isHashCodeCalculated = true; hashCodeValue = style.calculateHashCode(this); return hashCodeValue; } /** * test for equality - note: case is ignored. */ public boolean equals(Object obj) { if (obj == this) { return true; } if (!(obj instanceof X500Name || obj instanceof ASN1Sequence)) { return false; } ASN1Primitive derO = ((ASN1Encodable)obj).toASN1Primitive(); if (this.toASN1Primitive().equals(derO)) { return true; } try { return style.areEqual(this, new X500Name(ASN1Sequence.getInstance(((ASN1Encodable)obj).toASN1Primitive()))); } catch (Exception e) { return false; } } public String toString() { return style.toString(this); } /** * Set the default style for X500Name construction. * * @param style an X500NameStyle */ public static void setDefaultStyle(X500NameStyle style) { if (style == null) { throw new NullPointerException("cannot set style to null"); } defaultStyle = style; } /** * Return the current default style. * * @return default style for X500Name construction. */ public static X500NameStyle getDefaultStyle() { return defaultStyle; } }




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