Source for gnu.java.security.x509.PolicyNodeImpl

   1: /* PolicyNodeImpl.java -- An implementation of a policy tree node.
   2:    Copyright (C) 2004  Free Software Foundation, Inc.
   3: 
   4: This file is part of GNU Classpath.
   5: 
   6: GNU Classpath is free software; you can redistribute it and/or modify
   7: it under the terms of the GNU General Public License as published by
   8: the Free Software Foundation; either version 2, or (at your option)
   9: any later version.
  10: 
  11: GNU Classpath is distributed in the hope that it will be useful, but
  12: WITHOUT ANY WARRANTY; without even the implied warranty of
  13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14: General Public License for more details.
  15: 
  16: You should have received a copy of the GNU General Public License
  17: along with GNU Classpath; see the file COPYING.  If not, write to the
  18: Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  19: 02110-1301 USA.
  20: 
  21: Linking this library statically or dynamically with other modules is
  22: making a combined work based on this library.  Thus, the terms and
  23: conditions of the GNU General Public License cover the whole
  24: combination.
  25: 
  26: As a special exception, the copyright holders of this library give you
  27: permission to link this library with independent modules to produce an
  28: executable, regardless of the license terms of these independent
  29: modules, and to copy and distribute the resulting executable under
  30: terms of your choice, provided that you also meet, for each linked
  31: independent module, the terms and conditions of the license of that
  32: module.  An independent module is a module which is not derived from
  33: or based on this library.  If you modify this library, you may extend
  34: this exception to your version of the library, but you are not
  35: obligated to do so.  If you do not wish to do so, delete this
  36: exception statement from your version. */
  37: 
  38: 
  39: package gnu.java.security.x509;
  40: 
  41: import java.security.cert.PolicyNode;
  42: import java.security.cert.PolicyQualifierInfo;
  43: 
  44: import java.util.Collection;
  45: import java.util.Collections;
  46: import java.util.HashSet;
  47: import java.util.Iterator;
  48: import java.util.Set;
  49: 
  50: public final class PolicyNodeImpl implements PolicyNode
  51: {
  52: 
  53:   // Fields.
  54:   // -------------------------------------------------------------------------
  55: 
  56:   private String policy;
  57:   private final Set expectedPolicies;
  58:   private final Set qualifiers;
  59:   private final Set children;
  60:   private PolicyNodeImpl parent;
  61:   private int depth;
  62:   private boolean critical;
  63:   private boolean readOnly;
  64: 
  65:   // Constructors.
  66:   // -------------------------------------------------------------------------
  67: 
  68:   public PolicyNodeImpl()
  69:   {
  70:     expectedPolicies = new HashSet();
  71:     qualifiers = new HashSet();
  72:     children = new HashSet();
  73:     readOnly = false;
  74:     critical = false;
  75:   }
  76: 
  77:   // Instance methods.
  78:   // -------------------------------------------------------------------------
  79: 
  80:   public void addChild(PolicyNodeImpl node)
  81:   {
  82:     if (readOnly)
  83:       throw new IllegalStateException("read only");
  84:     if (node.getParent() != null)
  85:       throw new IllegalStateException("already a child node");
  86:     node.parent = this;
  87:     node.setDepth(depth + 1);
  88:     children.add(node);
  89:   }
  90: 
  91:   public Iterator getChildren()
  92:   {
  93:     return Collections.unmodifiableSet(children).iterator();
  94:   }
  95: 
  96:   public int getDepth()
  97:   {
  98:     return depth;
  99:   }
 100: 
 101:   public void setDepth(int depth)
 102:   {
 103:     if (readOnly)
 104:       throw new IllegalStateException("read only");
 105:     this.depth = depth;
 106:   }
 107: 
 108:   public void addAllExpectedPolicies(Set policies)
 109:   {
 110:     if (readOnly)
 111:       throw new IllegalStateException("read only");
 112:     expectedPolicies.addAll(policies);
 113:   }
 114: 
 115:   public void addExpectedPolicy(String policy)
 116:   {
 117:     if (readOnly)
 118:       throw new IllegalStateException("read only");
 119:     expectedPolicies.add(policy);
 120:   }
 121: 
 122:   public Set getExpectedPolicies()
 123:   {
 124:     return Collections.unmodifiableSet(expectedPolicies);
 125:   }
 126: 
 127:   public PolicyNode getParent()
 128:   {
 129:     return parent;
 130:   }
 131: 
 132:   public void addAllPolicyQualifiers (Collection qualifiers)
 133:   {
 134:     for (Iterator it = qualifiers.iterator(); it.hasNext(); )
 135:       {
 136:         if (!(it.next() instanceof PolicyQualifierInfo))
 137:           throw new IllegalArgumentException ("can only add PolicyQualifierInfos");
 138:       }
 139:     qualifiers.addAll (qualifiers);
 140:   }
 141: 
 142:   public void addPolicyQualifier (PolicyQualifierInfo qualifier)
 143:   {
 144:     if (readOnly)
 145:       throw new IllegalStateException("read only");
 146:     qualifiers.add(qualifier);
 147:   }
 148: 
 149:   public Set getPolicyQualifiers()
 150:   {
 151:     return Collections.unmodifiableSet(qualifiers);
 152:   }
 153: 
 154:   public String getValidPolicy()
 155:   {
 156:     return policy;
 157:   }
 158: 
 159:   public void setValidPolicy(String policy)
 160:   {
 161:     if (readOnly)
 162:       throw new IllegalStateException("read only");
 163:     this.policy = policy;
 164:   }
 165: 
 166:   public boolean isCritical()
 167:   {
 168:     return critical;
 169:   }
 170: 
 171:   public void setCritical(boolean critical)
 172:   {
 173:     if (readOnly)
 174:       throw new IllegalStateException("read only");
 175:     this.critical = critical;
 176:   }
 177: 
 178:   public void setReadOnly()
 179:   {
 180:     if (readOnly)
 181:       return;
 182:     readOnly = true;
 183:     for (Iterator it = getChildren(); it.hasNext(); )
 184:       ((PolicyNodeImpl) it.next()).setReadOnly();
 185:   }
 186: 
 187:   public String toString()
 188:   {
 189:     StringBuffer buf = new StringBuffer();
 190:     for (int i = 0; i < depth; i++)
 191:       buf.append("  ");
 192:     buf.append("(");
 193:     buf.append(PolicyNodeImpl.class.getName());
 194:     buf.append(" (oid ");
 195:     buf.append(policy);
 196:     buf.append(") (depth ");
 197:     buf.append(depth);
 198:     buf.append(") (qualifiers ");
 199:     buf.append(qualifiers);
 200:     buf.append(") (critical ");
 201:     buf.append(critical);
 202:     buf.append(") (expectedPolicies ");
 203:     buf.append(expectedPolicies);
 204:     buf.append(") (children (");
 205:     final String nl = System.getProperty("line.separator");
 206:     for (Iterator it = getChildren(); it.hasNext(); )
 207:       {
 208:         buf.append(nl);
 209:         buf.append(it.next().toString());
 210:       }
 211:     buf.append(")))");
 212:     return buf.toString();
 213:   }
 214: }