src/org/bouncycastle/asn1/x509/BasicConstraints.java

   1 package org.bouncycastle.asn1.x509;
   2
   3 import java.math.BigInteger;
   4
   5 import org.bouncycastle.asn1.*;
   6
   7 public class BasicConstraints
   8     implements DEREncodable
   9 {
  10     DERBoolean  cA = new DERBoolean(false);
  11     DERInteger  pathLenConstraint = null;
  12
  13     public BasicConstraints(
  14         DERConstructedSequence   seq)
  15     {
  16         if (seq.getSize() != 0)
  17         {
  18             this.cA = (DERBoolean)seq.getObjectAt(0);
  19             this.pathLenConstraint = (DERInteger)seq.getObjectAt(1);
  20         }
  21     }
  22
  23     public BasicConstraints(
  24         boolean cA,
  25         int     pathLenConstraint)
  26     {
  27         this.cA = new DERBoolean(cA);
  28         this.pathLenConstraint = new DERInteger(pathLenConstraint);
  29     }
  30
  31     public BasicConstraints(
  32         boolean cA)
  33     {
  34         this.cA = new DERBoolean(cA);
  35         this.pathLenConstraint = null;
  36     }
  37
  38     public boolean isCA()
  39     {
  40         return cA.isTrue();
  41     }
  42
  43     public BigInteger getPathLenConstraint()
  44     {
  45         if (pathLenConstraint != null)
  46         {
  47             return pathLenConstraint.getValue();
  48         }
  49
  50         return null;
  51     }
  52
  53     /**
  54      * <pre>
  55      * BasicConstraints := SEQUENCE {
  56      *    cA                  BOOLEAN DEFAULT FALSE,
  57      *    pathLenConstraint   INTEGER (0..MAX) OPTIONAL
  58      * }
  59      * </pre>
  60      */
  61     public DERObject getDERObject()
  62     {
  63         DERConstructedSequence  seq = new DERConstructedSequence();
  64
  65         seq.addObject(cA);
  66
  67         if (pathLenConstraint != null)
  68         {
  69             seq.addObject(pathLenConstraint);
  70         }
  71
  72         return seq;
  73     }
  74
  75     public String toString()
  76     {
  77         return "BasicConstraints: isCa(" + this.isCA() + "), pathLenConstraint = " + pathLenConstraint.getValue();
  78     }
  79 }