1 files changed, 189 insertions, 0 deletions
diff --git a/libraries/spongycastle/core/src/main/java/org/spongycastle/asn1/x509/IetfAttrSyntax.java b/libraries/spongycastle/core/src/main/java/org/spongycastle/asn1/x509/IetfAttrSyntax.java
new file mode 100644
index 000000000..c8eca193c
--- /dev/null
+++ b/libraries/spongycastle/core/src/main/java/org/spongycastle/asn1/x509/IetfAttrSyntax.java
@@ -0,0 +1,189 @@
+package org.spongycastle.asn1.x509;
+
+import java.util.Enumeration;
+import java.util.Vector;
+
+import org.spongycastle.asn1.ASN1Encodable;
+import org.spongycastle.asn1.ASN1EncodableVector;
+import org.spongycastle.asn1.ASN1Object;
+import org.spongycastle.asn1.ASN1ObjectIdentifier;
+import org.spongycastle.asn1.ASN1OctetString;
+import org.spongycastle.asn1.ASN1Primitive;
+import org.spongycastle.asn1.ASN1Sequence;
+import org.spongycastle.asn1.ASN1TaggedObject;
+import org.spongycastle.asn1.DEROctetString;
+import org.spongycastle.asn1.DERSequence;
+import org.spongycastle.asn1.DERTaggedObject;
+import org.spongycastle.asn1.DERUTF8String;
+
+/**
+ * Implementation of <code>IetfAttrSyntax</code> as specified by RFC3281.
+ */
+public class IetfAttrSyntax
+    extends ASN1Object
+{
+    public static final int VALUE_OCTETS    = 1;
+    public static final int VALUE_OID       = 2;
+    public static final int VALUE_UTF8      = 3;
+    GeneralNames            policyAuthority = null;
+    Vector                  values          = new Vector();
+    int                     valueChoice     = -1;
+
+    public static IetfAttrSyntax getInstance(Object obj)
+    {
+        if (obj instanceof IetfAttrSyntax)
+        {
+            return (IetfAttrSyntax)obj;
+        }
+        if (obj != null)
+        {
+            return new IetfAttrSyntax(ASN1Sequence.getInstance(obj));
+        }
+
+        return null;
+    }
+
+    /**
+     *  
+     */
+    private IetfAttrSyntax(ASN1Sequence seq)
+    {
+        int i = 0;
+
+        if (seq.getObjectAt(0) instanceof ASN1TaggedObject)
+        {
+            policyAuthority = GeneralNames.getInstance(((ASN1TaggedObject)seq.getObjectAt(0)), false);
+            i++;
+        }
+        else if (seq.size() == 2)
+        { // VOMS fix
+            policyAuthority = GeneralNames.getInstance(seq.getObjectAt(0));
+            i++;
+        }
+
+        if (!(seq.getObjectAt(i) instanceof ASN1Sequence))
+        {
+            throw new IllegalArgumentException("Non-IetfAttrSyntax encoding");
+        }
+
+        seq = (ASN1Sequence)seq.getObjectAt(i);
+
+        for (Enumeration e = seq.getObjects(); e.hasMoreElements();)
+        {
+            ASN1Primitive obj = (ASN1Primitive)e.nextElement();
+            int type;
+
+            if (obj instanceof ASN1ObjectIdentifier)
+            {
+                type = VALUE_OID;
+            }
+            else if (obj instanceof DERUTF8String)
+            {
+                type = VALUE_UTF8;
+            }
+            else if (obj instanceof DEROctetString)
+            {
+                type = VALUE_OCTETS;
+            }
+            else
+            {
+                throw new IllegalArgumentException("Bad value type encoding IetfAttrSyntax");
+            }
+
+            if (valueChoice < 0)
+            {
+                valueChoice = type;
+            }
+
+            if (type != valueChoice)
+            {
+                throw new IllegalArgumentException("Mix of value types in IetfAttrSyntax");
+            }
+
+            values.addElement(obj);
+        }
+    }
+
+    public GeneralNames getPolicyAuthority()
+    {
+        return policyAuthority;
+    }
+
+    public int getValueType()
+    {
+        return valueChoice;
+    }
+
+    public Object[] getValues()
+    {
+        if (this.getValueType() == VALUE_OCTETS)
+        {
+            ASN1OctetString[] tmp = new ASN1OctetString[values.size()];
+            
+            for (int i = 0; i != tmp.length; i++)
+            {
+                tmp[i] = (ASN1OctetString)values.elementAt(i);
+            }
+            
+            return tmp;
+        }
+        else if (this.getValueType() == VALUE_OID)
+        {
+            ASN1ObjectIdentifier[] tmp = new ASN1ObjectIdentifier[values.size()];
+            
+            for (int i = 0; i != tmp.length; i++)
+            {
+                tmp[i] = (ASN1ObjectIdentifier)values.elementAt(i);
+            }
+            
+            return tmp;
+        }
+        else
+        {
+            DERUTF8String[] tmp = new DERUTF8String[values.size()];
+            
+            for (int i = 0; i != tmp.length; i++)
+            {
+                tmp[i] = (DERUTF8String)values.elementAt(i);
+            }
+            
+            return tmp;
+        }
+    }
+
+    /**
+     * 
+     * <pre>
+     * 
+     *  IetfAttrSyntax ::= SEQUENCE {
+     *    policyAuthority [0] GeneralNames OPTIONAL,
+     *    values SEQUENCE OF CHOICE {
+     *      octets OCTET STRING,
+     *      oid OBJECT IDENTIFIER,
+     *      string UTF8String
+     *    }
+     *  }
+     *  
+     * </pre>
+     */
+    public ASN1Primitive toASN1Primitive()
+    {
+        ASN1EncodableVector v = new ASN1EncodableVector();
+
+        if (policyAuthority != null)
+        {
+            v.add(new DERTaggedObject(0, policyAuthority));
+        }
+
+        ASN1EncodableVector v2 = new ASN1EncodableVector();
+
+        for (Enumeration i = values.elements(); i.hasMoreElements();)
+        {
+            v2.add((ASN1Encodable)i.nextElement());
+        }
+
+        v.add(new DERSequence(v2));
+
+        return new DERSequence(v);
+    }
+}