2002/03/21 01:19:32

[org.ibex.core.git] / src / org / bouncycastle / asn1 / x509 / BasicConstraints.java

diff --git a/src/org/bouncycastle/asn1/x509/BasicConstraints.java b/src/org/bouncycastle/asn1/x509/BasicConstraints.java
new file mode 100644 (file)
index 0000000..ec84915
--- /dev/null
+++ b/src/org/bouncycastle/asn1/x509/BasicConstraints.java
@@ -0,0 +1,79 @@
+package org.bouncycastle.asn1.x509;
+
+import java.math.BigInteger;
+
+import org.bouncycastle.asn1.*;
+
+public class BasicConstraints
+    implements DEREncodable
+{
+    DERBoolean  cA = new DERBoolean(false);
+    DERInteger  pathLenConstraint = null;
+
+    public BasicConstraints(
+        DERConstructedSequence   seq)
+    {
+        if (seq.getSize() != 0)
+        {
+            this.cA = (DERBoolean)seq.getObjectAt(0);
+            this.pathLenConstraint = (DERInteger)seq.getObjectAt(1);
+        }
+    }
+
+    public BasicConstraints(
+        boolean cA,
+        int     pathLenConstraint)
+    {
+        this.cA = new DERBoolean(cA);
+        this.pathLenConstraint = new DERInteger(pathLenConstraint);
+    }
+
+    public BasicConstraints(
+        boolean cA)
+    {
+        this.cA = new DERBoolean(cA);
+        this.pathLenConstraint = null;
+    }
+
+    public boolean isCA()
+    {
+        return cA.isTrue();
+    }
+
+    public BigInteger getPathLenConstraint()
+    {
+        if (pathLenConstraint != null)
+        {
+            return pathLenConstraint.getValue();
+        }
+
+        return null;
+    }
+
+    /**
+     * <pre>
+     * BasicConstraints := SEQUENCE {
+     *    cA                  BOOLEAN DEFAULT FALSE,
+     *    pathLenConstraint   INTEGER (0..MAX) OPTIONAL
+     * }
+     * </pre>
+     */
+    public DERObject getDERObject()
+    {
+        DERConstructedSequence  seq = new DERConstructedSequence();
+
+        seq.addObject(cA);
+
+        if (pathLenConstraint != null)
+        {
+            seq.addObject(pathLenConstraint);
+        }
+
+        return seq;
+    }
+
+    public String toString()
+    {
+        return "BasicConstraints: isCa(" + this.isCA() + "), pathLenConstraint = " + pathLenConstraint.getValue();
+    }
+}