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1: /* PolicyQualifierInfo.java -- policy qualifier info object. 2: Copyright (C) 2003, 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 java.security.cert; 40: 41: import gnu.java.io.ASN1ParsingException; 42: import gnu.java.security.OID; 43: import gnu.java.security.der.DERReader; 44: import gnu.java.security.der.DERValue; 45: 46: import java.io.ByteArrayInputStream; 47: import java.io.IOException; 48: 49: /** 50: * The PolicyQualifierInfo X.509 certificate extension. 51: * PolicyQualifierInfo objects are represented by the ASN.1 structure: 52: * 53: * <pre> 54: * PolicyQualifierInfo ::= SEQUENCE { 55: * policyQualifierId PolicyQualifierId, 56: * qualifier ANY DEFINED BY policyQualifierId 57: * } 58: * 59: * PolicyQualifierId ::= OBJECT IDENTIFIER 60: * </pre> 61: * 62: * @since JDK 1.4 63: */ 64: public final class PolicyQualifierInfo 65: { 66: 67: // Fields. 68: // ------------------------------------------------------------------------ 69: 70: /** The <code>policyQualifierId</code> field. */ 71: private OID oid; 72: 73: /** The DER encoded form of this object. */ 74: private byte[] encoded; 75: 76: /** The DER encoded form of the <code>qualifier</code> field. */ 77: private DERValue qualifier; 78: 79: // Constructor. 80: // ------------------------------------------------------------------------ 81: 82: /** 83: * Create a new PolicyQualifierInfo object from the DER encoded form 84: * passed in the byte array. The argument is copied. 85: * 86: * <p>The ASN.1 form of PolicyQualifierInfo is: 87: <pre> 88: PolicyQualifierInfo ::= SEQUENCE { 89: policyQualifierId PolicyQualifierId, 90: qualifier ANY DEFINED BY policyQualifierId 91: } 92: 93: PolicyQualifierId ::= OBJECT IDENTIFIER 94: </pre> 95: * 96: * @param encoded The DER encoded form. 97: * @throws IOException If the structure cannot be parsed from the 98: * encoded bytes. 99: */ 100: public PolicyQualifierInfo(byte[] encoded) throws IOException 101: { 102: if (encoded == null) 103: throw new IOException("null bytes"); 104: this.encoded = (byte[]) encoded.clone(); 105: DERReader in = new DERReader(new ByteArrayInputStream(this.encoded)); 106: DERValue qualInfo = in.read(); 107: if (!qualInfo.isConstructed()) 108: throw new ASN1ParsingException("malformed PolicyQualifierInfo"); 109: DERValue val = in.read(); 110: if (!(val.getValue() instanceof OID)) 111: throw new ASN1ParsingException("value read not an OBJECT IDENTIFIER"); 112: oid = (OID) val.getValue(); 113: if (val.getEncodedLength() < val.getLength()) 114: qualifier = in.read(); 115: } 116: 117: // Instance methods. 118: // ------------------------------------------------------------------------ 119: 120: /** 121: * Returns the <code>policyQualifierId</code> field of this structure, 122: * as a dotted-decimal representation of the object identifier. 123: * 124: * @return This structure's OID field. 125: */ 126: public String getPolicyQualifierId() 127: { 128: return oid.toString(); 129: } 130: 131: /** 132: * Returns the DER encoded form of this object; the contents of the 133: * returned byte array are equivalent to those that were passed to the 134: * constructor. The byte array is cloned every time this method is 135: * called. 136: * 137: * @return The encoded form. 138: */ 139: public byte[] getEncoded() 140: { 141: return (byte[]) encoded.clone(); 142: } 143: 144: /** 145: * Get the <code>qualifier</code> field of this object, as a DER 146: * encoded byte array. The byte array returned is cloned every time 147: * this method is called. 148: * 149: * @return The encoded qualifier. 150: */ 151: public byte[] getPolicyQualifier() 152: { 153: if (qualifier == null) 154: return new byte[0]; 155: return qualifier.getEncoded(); 156: } 157: 158: /** 159: * Returns a printable string representation of this object. 160: * 161: * @return The string representation. 162: */ 163: public String toString() 164: { 165: return "PolicyQualifierInfo { policyQualifierId ::= " + oid 166: + ", qualifier ::= " + qualifier + " }"; 167: } 168: }
GNU Classpath (0.20) |