diff options
author | David Hook <dgh@cryptoworkshop.com> | 2013-05-31 11:07:45 +0400 |
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committer | David Hook <dgh@cryptoworkshop.com> | 2013-05-31 11:07:45 +0400 |
commit | 2b976f5364cfdbc37d3086019d93483c983eb80b (patch) | |
tree | cb846af3fd1d43f9c2562a1fb2d06b997ad8f229 /core/src/main/java/org/bouncycastle/asn1/x509/TargetInformation.java | |
parent | 5f714bd92fbd780d22406f4bc3681be005f6f04a (diff) |
initial reshuffle
Diffstat (limited to 'core/src/main/java/org/bouncycastle/asn1/x509/TargetInformation.java')
-rw-r--r-- | core/src/main/java/org/bouncycastle/asn1/x509/TargetInformation.java | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/core/src/main/java/org/bouncycastle/asn1/x509/TargetInformation.java b/core/src/main/java/org/bouncycastle/asn1/x509/TargetInformation.java new file mode 100644 index 00000000..eb892b9d --- /dev/null +++ b/core/src/main/java/org/bouncycastle/asn1/x509/TargetInformation.java @@ -0,0 +1,120 @@ +package org.bouncycastle.asn1.x509; + +import java.util.Enumeration; + +import org.bouncycastle.asn1.ASN1Object; +import org.bouncycastle.asn1.ASN1Primitive; +import org.bouncycastle.asn1.ASN1Sequence; +import org.bouncycastle.asn1.DERSequence; + +/** + * Target information extension for attributes certificates according to RFC + * 3281. + * + * <pre> + * SEQUENCE OF Targets + * </pre> + * + */ +public class TargetInformation + extends ASN1Object +{ + private ASN1Sequence targets; + + /** + * Creates an instance of a TargetInformation from the given object. + * <p> + * <code>obj</code> can be a TargetInformation or a {@link ASN1Sequence} + * + * @param obj The object. + * @return A TargetInformation instance. + * @throws IllegalArgumentException if the given object cannot be + * interpreted as TargetInformation. + */ + public static TargetInformation getInstance(Object obj) + { + if (obj instanceof TargetInformation) + { + return (TargetInformation)obj; + } + else if (obj != null) + { + return new TargetInformation(ASN1Sequence.getInstance(obj)); + } + + return null; + } + + /** + * Constructor from a ASN1Sequence. + * + * @param seq The ASN1Sequence. + * @throws IllegalArgumentException if the sequence does not contain + * correctly encoded Targets elements. + */ + private TargetInformation(ASN1Sequence seq) + { + targets = seq; + } + + /** + * Returns the targets in this target information extension. + * + * @return Returns the targets. + */ + public Targets[] getTargetsObjects() + { + Targets[] copy = new Targets[targets.size()]; + int count = 0; + for (Enumeration e = targets.getObjects(); e.hasMoreElements();) + { + copy[count++] = Targets.getInstance(e.nextElement()); + } + return copy; + } + + /** + * Constructs a target information from a single targets element. + * According to RFC 3281 only one targets element must be produced. + * + * @param targets A Targets instance. + */ + public TargetInformation(Targets targets) + { + this.targets = new DERSequence(targets); + } + + /** + * According to RFC 3281 only one targets element must be produced. If + * multiple targets are given they must be merged in + * into one targets element. + * + * @param targets An array with {@link Targets}. + */ + public TargetInformation(Target[] targets) + { + this(new Targets(targets)); + } + + /** + * Produce an object suitable for an ASN1OutputStream. + * + * Returns: + * + * <pre> + * SEQUENCE OF Targets + * </pre> + * + * <p> + * According to RFC 3281 only one targets element must be produced. If + * multiple targets are given in the constructor they are merged into one + * targets element. If this was produced from a + * {@link org.bouncycastle.asn1.ASN1Sequence} the encoding is kept. + * + * @return a ASN1Primitive + */ + public ASN1Primitive toASN1Primitive() + { + return targets; + } +} |