package org.bouncycastle.asn1.x509;
import org.bouncycastle.asn1.ASN1Encodable;
import org.bouncycastle.asn1.ASN1EncodableVector;
import org.bouncycastle.asn1.ASN1Sequence;
import org.bouncycastle.asn1.ASN1TaggedObject;
import org.bouncycastle.asn1.DEREncodable;
import org.bouncycastle.asn1.DERObject;
import org.bouncycastle.asn1.DERSequence;
import org.bouncycastle.asn1.DERString;
import org.bouncycastle.asn1.DERTaggedObject;
/**
* Implementation of the RoleSyntax object as specified by the RFC3281.
*
* <pre>
* RoleSyntax ::= SEQUENCE {
* roleAuthority [0] GeneralNames OPTIONAL,
* roleName [1] GeneralName
* }
* </pre>
*/
public class RoleSyntax
extends ASN1Encodable
{
private GeneralNames roleAuthority;
private GeneralName roleName;
/**
* RoleSyntax factory method.
* @param obj the object used to construct an instance of <code>
* RoleSyntax</code>. It must be an instance of <code>RoleSyntax
* </code> or <code>ASN1Sequence</code>.
* @return the instance of <code>RoleSyntax</code> built from the
* supplied object.
* @throws java.lang.IllegalArgumentException if the object passed
* to the factory is not an instance of <code>RoleSyntax</code> or
* <code>ASN1Sequence</code>.
*/
public static RoleSyntax getInstance(
Object obj)
{
if(obj == null || obj instanceof RoleSyntax)
{
return (RoleSyntax)obj;
}
else if(obj instanceof ASN1Sequence)
{
return new RoleSyntax((ASN1Sequence)obj);
}
throw new IllegalArgumentException("Unknown object in RoleSyntax factory.");
}
/**
* Constructor.
* @param roleAuthority the role authority of this RoleSyntax.
* @param roleName the role name of this RoleSyntax.
*/
public RoleSyntax(
GeneralNames roleAuthority,
GeneralName roleName)
{
if(roleName == null ||
roleName.getTagNo() != GeneralName.uniformResourceIdentifier ||
((DERString)roleName.getName()).getString().equals(""))
{
throw new IllegalArgumentException("the role name MUST be non empty and MUST " +
"use the URI option of GeneralName");
}
this.roleAuthority = roleAuthority;
this.roleName = roleName;
}
/**
* Constructor. Invoking this constructor is the same as invoking
* <code>new RoleSyntax(null, roleName)</code>.
* @param roleName the role name of this RoleSyntax.
*/
public RoleSyntax(
GeneralName roleName)
{
this(null, roleName);
}
/**
* Utility constructor. Takes a <code>String</code> argument representing
* the role name, builds a <code>GeneralName</code> to hold the role name
* and calls the constructor that takes a <code>GeneralName</code>.
* @param roleName
*/
public RoleSyntax(
String roleName)
{
this(new GeneralName(GeneralName.uniformResourceIdentifier,
(roleName == null)? "": roleName));
}
/**
* Constructor that builds an instance of <code>RoleSyntax</code> by
* extracting the encoded elements from the <code>ASN1Sequence</code>
* object supplied.
* @param seq an instance of <code>ASN1Sequence</code> that holds
* the encoded elements used to build this <code>RoleSyntax</code>.
*/
public RoleSyntax(
ASN1Sequence seq)
{
if (seq.size() < 1 || seq.size() > 2)
{
throw new IllegalArgumentException("Bad sequence size: "
+ seq.size());
}
for (int i = 0; i != seq.size(); i++)
{
ASN1TaggedObject taggedObject = ASN1TaggedObject.getInstance(seq.getObjectAt(i));
switch (taggedObject.getTagNo())
{
case 0:
roleAuthority = GeneralNames.getInstance(taggedObject, false);
break;
case 1:
roleName = GeneralName.getInstance(taggedObject, false);
break;
default:
throw new IllegalArgumentException("Unknown tag in RoleSyntax");
}
}
}
/**
* Gets the role authority of this RoleSyntax.
* @return an instance of <code>GeneralNames</code> holding the
* role authority of this RoleSyntax.
*/
public GeneralNames getRoleAuthority()
{
return this.roleAuthority;
}
/**
* Gets the role name of this RoleSyntax.
* @return an instance of <code>GeneralName</code> holding the
* role name of this RoleSyntax.
*/
public GeneralName getRoleName()
{
return this.roleName;
}
/**
* Gets the role name as a <code>java.lang.String</code> object.
* @return the role name of this RoleSyntax represented as a
* <code>java.lang.String</code> object.
*/
public String getRoleNameAsString()
{
DERString str = (DERString)this.roleName.getName();
return str.getString();
}
/**
* Gets the role authority as a <code>String[]</code> object.
* @return the role authority of this RoleSyntax represented as a
* <code>String[]<code> array.
*/
public String[] getRoleAuthorityAsString()
{
if(roleAuthority == null)
{
return new String[0];
}
GeneralName[] names = roleAuthority.getNames();
String[] namesString = new String[names.length];
for(int i = 0; i < names.length; i++)
{
DEREncodable value = names[i].getName();
if(value instanceof DERString)
{
namesString[i] = ((DERString)value).getString();
}
else
{
namesString[i] = value.toString();
}
}
return namesString;
}
/**
* Implementation of the method <code>toASN1Object</code> as
* required by the superclass <code>ASN1Encodable</code>.
*
* <pre>
* RoleSyntax ::= SEQUENCE {
* roleAuthority [0] GeneralNames OPTIONAL,
* roleName [1] GeneralName
* }
* </pre>
*/
public DERObject toASN1Object()
{
ASN1EncodableVector v = new ASN1EncodableVector();
if(this.roleAuthority != null)
{
v.add(new DERTaggedObject(false, 0, roleAuthority));
}
v.add(new DERTaggedObject(false, 1, roleName));
return new DERSequence(v);
}
public String toString()
{
StringBuffer buff = new StringBuffer("Name: " + this.getRoleNameAsString() +
" - Auth: ");
if(this.roleAuthority == null || roleAuthority.getNames().length == 0)
{
buff.append("N/A");
}
else
{
String[] names = this.getRoleAuthorityAsString();
buff.append('[').append(names[0]);
for(int i = 1; i < names.length; i++)
{
buff.append(", ").append(names[i]);
}
buff.append(']');
}
return buff.toString();
}
}
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